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Including optical detection

Subclass of:

345 - Computer graphics processing and selective visual display systems

345156000 - DISPLAY PERIPHERAL INTERFACE INPUT DEVICE

345173000 - Touch panel

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DocumentTitleDate
20100156847DISPLAY DEVICE INCLUDING A TOUCH SENSOR - A display device includes; a first touch sensor, a second touch sensor disposed in proximity to the first touch sensor, a shade located on the second touch sensor wherein the shade controls intensity of incident light to the second touch sensor so that the second touch sensor receives a different intensity than the first touch sensor, and a reader which receives a first signal and a second signal from the first touch sensor and the second touch sensor, respectively and which analyzes the first signal and the second signal.06-24-2010
20100156851Touch Panel and Driving Method Thereof - An object is to provide a touch panel with high-accuracy and high-speed operation. A touch panel includes a plurality of pixels each including a display element and a photo sensor, a photo sensor reading circuit to which an output signal of the photo sensor is provided, a display element select circuit which provides an image signal to the display element, a plurality of edge sensitive latches provided in series, and a logic circuit. The logic circuit generates a signal by performing a logic operation on an output signal of the plurality of edge sensitive latches and provides the generated signal to the photo sensor reading circuit.06-24-2010
20110175849OPTICAL TOUCH DISPLAY DEVICE AND METHOD - An optical touch display device includes a display screen capable of emitting an invisible light, at least one image acquisition module, and a processing module. The image acquisition module is arranged at a peripheral edge of the display screen for acquiring an invisible light image on or above a surface of the display screen. The processing module calculates a spatial position of an object according to a position of the object in the invisible light image acquired by the image acquisition module. With these arrangements, the optical touch display device can have an effectively reduced thickness and the spatial position of the object can be determined in increased accuracy. Further, the processing module can determine a user's gesture according to the acquired invisible light image. A method for implementing optical touch display is also disclosed.07-21-2011
20130044082TOUCH-SENSING DISPLAY PANEL AND MANUFACTURING METHOD THEREOF - A touch-sensing display panel including a front substrate, scan lines, data lines, pixel structures, photo-sensors, readout devices, a rear substrate and a display medium is provided. The front substrate has an inner surface. The scan lines and the data lines are on the inner surface of the front substrate and intersected to each other. The pixel structures are disposed on the inner surface of the front substrate, and each pixel structure is electrically connected to one of the scan lines and one of the data lines correspondingly. The photo-sensors are disposed on the inner surface of the front substrate. Each readout device is electrically connected to one of the photo-sensor correspondingly. The rear substrate is disposed opposite to the front substrate. The display medium is sealed between the front substrate and the rear substrate.02-21-2013
20130044081OPTICAL TOUCH SYSTEM AND A POSITIONING METHOD THEREOF - The present disclosure provides an optical touch system and a positioning method thereof based on stereo vision theory. The proposed optical touch system adopts at least two adjustable linear image sensors to capture image information so that the information can be applicable to different sizes of touch screens by adjusting locations of the image sensors. Sensing area covers the whole screen without the need to increase quantity of sensors; besides, the present disclosure also provides a positioning method for the optical touch system, malting the spectra emitted by a stylus correspond to the image sensors, which leaves out complicated image processing to improve the speed and accuracy of touch response.02-21-2013
20100117991IMAGE INPUT-OUTPUT DEVICE - An image input-output device includes a pixel which displays an image and reads an image. The pixel includes a photodetector element, a color layer, and a display element. The color layer is provided over the photodetector element and the display element is provided over the color layer, so that the distance between the photodetector element and the color layer is reduced. Accordingly, light is likely to enter the predetermined photodetector element through the predetermined color layer, and thus, even a color object can be read correctly.05-13-2010
20100090983Techniques for Creating A Virtual Touchscreen - A technique for creating a virtual touchscreen includes capturing, with a first infrared camera, a first reflection from an object that is at a known position adjacent a surface associated with a device. A second reflection from the object (at the known position) is captured with a second infrared camera. The first and second reflections are correlated with the known position to provide a two-dimensional position for the object that is calibrated with respect to the surface.04-15-2010
20120162138DISPLAY APPARATUS - A display apparatus includes a display panel that displays an image using a first light, a light guide part positioned at a front side of the display panel, a backlight unit, an image information collecting part, and a processing part. The light guide part emits a second light different from the first light and guide the second light, and the backlight unit is positioned at a rear side of the display panel to provide the first light to the display panel. The image information collecting part photographs the light emitted from the light guide part to output image information. The processing part processes the image information to generate a coordinate value of a position at which an object provided on the light guide plate is positioned.06-28-2012
20120162135OPTICAL TOUCH APPARATUS - An optical touch apparatus includes: a frame having a first side that has a first connecting unit; a lighting module for generating light, the lighting module having a second connecting unit connected to the first connecting unit of the first side of the frame such that the lighting module is mounted to the first side of the frame; and two optical sensors mounted on the frame and disposed respectively at two corners of the frame, each of the optical sensors sensing the light generated by the lighting module.06-28-2012
20120169671MULTI-TOUCH INPUT APPARATUS AND ITS INTERFACE METHOD USING DATA FUSION OF A SINGLE TOUCH SENSOR PAD AND AN IMAGING SENSOR - A system and method for generating a multi-touch command using a single-touch sensor pad and an imaging sensor is disclosed. The imaging sensor is disposed adjacent to the single-touch sensor pad and captures images of a user's fingers on or above the single-touch sensor pad. The system includes firmware that acquires data from the single-touch sensor pad and uses that data with the one or more images from the imaging sensor to generate a multi-touch command.07-05-2012
20120169670MOBILE TERMINAL AND TOUCH RECOGNIZING METHOD THEREIN - A mobile terminal and touch recognizing method therein are disclosed, by which a multi-touch can be recognized. The present invention includes receiving a plurality of touches simultaneously using a touchscreen, consecutively receiving a plurality of images including a plurality of the received touches for a predetermined time using a camera provided under the touchscreen, determining patterns and pattern changes of a plurality of the touches included in a plurality of the images, respectively, and recognizing a gesture by a plurality of the touches in accordance with a result of the determining step. Moreover, the touch pattern includes at least one selected from the group consisting of a touch number, a touch point, a touch size and a touch figure.07-05-2012
20100149132IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND IMAGE PROCESSING PROGRAM - An image processing apparatus includes: a determining unit configured to determine one or more pieces of image data to be processed; a motion detecting unit configured to detect the motion of the image processing apparatus; a processing unit configured to execute predetermined processing regarding the one or more pieces of image data determined via the determining unit; and a processing control unit configured to execute control so as to execute the predetermined processing via the processing unit, in the case of detecting that a particular operation has been executed as to the image processing apparatus via the motion detecting unit.06-17-2010
20100149131TOUCH SENSITIVE DISPLAY DEVICE AND METHOD OF DETERMINING TOUCH - In a method for determining a contact of a display device according to an exemplary embodiment, a covariance matrix is used to extract a unique vector and a unique value and to obtain the main component through the unique vector and the unique value. The value of the main component is analyzed to determine the contact existence. The unique vector and the unique value are used to extract the main component, and then the contact existence is determined such that the touch existence and the position thereof may be correctly determined without errors.06-17-2010
20080259053Touch Screen System with Hover and Click Input Methods - A touch screen system that can approximate tracking and dragging states regardless of the user's orientation and without reliance on direct sensing of touch pressure or area. A first detector generates a signal representing a first image of an object interacting with the touch screen. A second detector generates a signal representing a second image of the object. A signal processor processes the first signal to determine approximated coordinates of a first pair of outer edges of the object and processes the second signal to determine approximated coordinates of a second pair of outer edges of the object. The signal processor then calculates an approximated touch area based on the approximated coordinates of the first pair of outer edges and the approximated coordinates of the second pair of outer edges of the object. If the approximated touch area is less than or equal to a threshold touch area, the signal processor determines that the object interacting with the touch screen indicates a tracking state. If the approximated touch area is greater than the threshold touch area, the signal processor determines that the object interacting with the touch screen indicates a selection state. The threshold touch area may be established by calibrating the touch screen system when the object interacting with the touch screen is known to indicate the tracking state.10-23-2008
20080259052Optical touch control apparatus and method thereof - The present invention discloses an optical touch control apparatus, comprising: a light guide module having an optical information capturing position, the light guide module guiding light to the optical information capturing position, and generating optical information according to light input through or reflected from the optical information capturing position; and an image sensor module for sensing the optical information, and generating an electronic signal according to the optical information.10-23-2008
20080259050Optical touch control apparatus and method thereof - The present invention discloses an optical touch control apparatus, comprising: a light guide module having a screen, the light guide module guiding light to the screen, and generating optical information according to light input through or reflected from the screen; and an image sensor module for sensing the optical information, and generating an electronic signal according to the optical information.10-23-2008
20110193823Optical sensing system - An optical sensing system includes a sensing area, a reflective mirror, a first image-sensing device, a second image-sensing device, and a processing circuit. The sensing area is an area in which a plurality of pointing objects may execute touch operation. The reflective mirror generates a mirror image of the sensing area. The first image-sensing device and the second image-sensing device respectively capture images including all or part of the pointing objects in the sensing area, and all or part of the pointing objects in the reflective mirror. The processing circuit generates candidate coordinates according to the images captured by the first and the second image-sensing devices, and obtains the locations of the pointing objects from the candidate coordinates by means of the symmetric relationship between the point objects and the corresponding mirror images with respect to the reflective mirror. In this way, the optical sensing system can perform multi-touch operation.08-11-2011
20110193822ELECTRICALLY SWITCHABLE FIELD OF VIEW FOR EMBEDDED LIGHT SENSOR - A display device for detecting light includes a display surface, at least one light sensitive element arranged behind the display surface, and a liquid crystal element arranged between the display surface and the at least one light sensitive element. The liquid crystal element is operative to polarization shift light incident on the at least one light sensitive element based on an orientation of the plurality of molecules. The display device further includes at least one electrode operative to change an orientation of the plurality of molecules. The at least one electrode is patterned to define a geometry of at least one field of view of the at least one light sensitive element. A controller is electrically coupled to the at least one electrode, wherein the controller is configured to apply a voltage to the at least one electrode to effect selection of the at least one field of view.08-11-2011
20090122027Touch Panel Display System with Illumination and Detection Provided from a Single Edge - A touch panel that has a front surface, a rear surface, a plurality of edges and an interior volume. An energy source is positioned in proximity to a first edge of the touch panel and is configured to emit energy that is propagated within the interior volume of the touch panel. A diffusing reflector is positioned in proximity to the front surface of the touch panel for diffusively reflecting at least a portion of the energy that escapes from the interior volume. At least one detector is positioned in proximity to the first edge of the touch panel and is configured to detect intensity levels of the energy that is diffusively reflected across the front surface of the touch panel. Preferably, two detectors are spaced apart from each other in proximity to the first edge of the touch panel, to allow calculation of touch locations using simple triangulation techniques.05-14-2009
20120176339SYSTEM AND METHOD FOR GENERATING CLICK INPUT SIGNAL FOR OPTICAL FINGER NAVIGATION - A system for generating click input signal for optical finger navigation, includes a touch sensor, a timing unit, and a control unit. The touch sensor is adapted to sense whether a finger presses thereon. The timing unit is adapted to time a duration time of the finger pressing on the touch sensor when the finger presses on the touch sensor. The control unit is adapted to generate a first click signal when the duration time is greater than a threshold value and generate a second click signal when the duration time is smaller than a threshold value.07-12-2012
20130076696DISPLAY APPARATUS - A display apparatus includes a display panel including a front surface on which an image is displayed, a top chassis covering an edge portion of the display panel, and a light sensor disposed on the top chassis to sense a touch event occurring on the front surface.03-28-2013
20130076695INTERACTIVE PRINTED SURFACE - An interactive surface including a display area and at least one photosensitive presence sensor, the display area and the at least one sensor being formed by deposition of organic conductive and semiconductive materials in liquid form on a dielectric support.03-28-2013
20130076694APPARATUS FOR DETECTING POSITION BY INFRARED RAYS AND TOUCH PANEL USING THE SAME - An apparatus for detecting a position by infrared rays is disclosed. The apparatus includes a plurality of IR sources, a plurality of receivers and a processor electrically coupled to the receivers. The IR sources and the receivers are interlacedly configured along a frame. The IR sources emit IR signals in at least two dimensions, and the IR sources in each dimension comprise two sets of IR signals running contrarily in direction. The receivers receive the IR signals from the corresponding IR sources. Even if the IR signals in one direction of one dimension are subject to interference, the IR signals in the other direction of the dimension can still be measured by the corresponding receivers. When at least one object is set in at least one position within the frame, the processor determines the position according to the coordinates of the receivers and strength variations of the received IR signals.03-28-2013
20130076697LIGHT-BASED TOUCH SCREEN - A light-based touch screen, including a housing for a display screen, a plurality of infra-red light emitting diodes (LEDs), fastened on the housing, for generating light beams, at least one LED selector, fastened on the housing and connected with the plurality of LEDs, for controllably selecting and deselecting one or more of the plurality of LEDs, a plurality of photodiode (PD) receivers, fastened on the housing, for measuring light intensity, at least one PD selector, fastened on the housing and connected with the plurality of PD receivers, for controllably selecting and deselecting one or more of the plurality of PD receivers, an optical assembly, fastened on the housing, for projecting light beams emitted by the plurality of LEDs in substantially parallel planes over the housing, and a controller, fastened on the housing and coupled with the plurality of PD receivers, (i) for controlling the at least one LED selector, (ii) for controlling the at least one PD selector, and (iii) for determining therefrom position and velocity of an object crossing at least one of the substantially parallel planes, based on output currents of the plurality of PD receivers.03-28-2013
20130076693TAPPING DETECTION METHOD OF OPTICAL NAVIGATION MODULE - A tapping detection method of an optical navigation module is disclosed. The module includes an optical sensor and a processor. The method includes steps of calculating a displacement quantity of an object contacting with the optical navigation module according to a sense image sensed by the optical sensor, and comparing the displacement quantity with a displacement threshold value. When the displacement quantity is smaller than the displacement threshold value, the method further includes steps of calculating a brightness difference value of the sense image, and comparing the brightness difference value with a brightness threshold value. When the brightness difference value is smaller than the brightness threshold value, the optical navigation module may be determined to be tapped by the object.03-28-2013
20100117990IMAGE PROCESSING DEVICE, CONTROL PROGRAM, COMPUTER-READABLE STORAGE MEDIUM, ELECTRONIC APPARATUS, AND IMAGE PROCESSING DEVICE CONTROL METHOD - The invention has an objective of detecting a position in a captured image pointed at with an image capture object with small memory and short processing time by using image data for only one frame, irrespective of detection of a touch/non-touch of the captured image with the image capture object. The invention includes: a pixel-value vertical-gradient-quantity calculation section (05-13-2010
20130082978OMNI-SPATIAL GESTURE INPUT - Embodiments of the present invention relate to systems, methods and computer storage media for detecting user input in an extended interaction space of a device, such as a handheld device. The method and system allow for utilizing a first sensor of the device sensing in a positive z-axis space of the device to detect a first input, such as a user's non-device-contacting gesture. The method and system also contemplate utilizing a second sensor of the device sensing in a negative z-axis space of the device to detect a second input. Additionally, the method and system contemplate updating a user interface presented on a display in response to detecting the first input by the first sensor in the positive z-axis space and detecting the second input by the second sensor in the negative z-axis space.04-04-2013
20100073328ANISOTROPIC OPTICAL COVER FOR TOUCH PANEL DISPLAY - A touch panel display configured to improve touch panel detection for sensor panels embedded in display modules. Touch panel detection can be improved by arranging an optically anisotropic cover over a display module within which an optical sensor panel is embedded. Since the optically anisotropic cover comprises light-guiding channels through which light is guided by total internal reflection, the cover can effectively shift the sensor plane from an outer surface of the cover, near the location of an object to be detected, to an inner surface of the cover, near the location of the sensor panel. In additional, the optically anisotropic cover can effectively shift the image plane from the inner surface of the cover, near the display module, to the outer surface of the cover, near the viewing surface.03-25-2010
20100073327USER INPUT DEVICE WITH DYNAMIC AMBIENT LIGHT CALIBRATION - A user input device to generate a shutter threshold adaptive to ambient light conditions. The user input device includes a sensor array, a shutter controller, and a threshold generator. The sensor array obtains image data in response to light incident on the sensor array. The shutter controller is coupled to the sensor array. The shutter controller controls a shutter time during which the sensor array is responsive to the light incident on the sensor array according to a shutter value. The threshold generator is coupled to the shutter controller. The threshold generator dynamically generates a shutter threshold corresponding to the shutter value. The shutter threshold defines a transition of a finger-on/off state.03-25-2010
20100073326CALIBRATION OF AN OPTICAL TOUCH-SENSITIVE DISPLAY DEVICE - Embodiments related to the calibration of an optical touch-sensitive display device are disclosed. For example, one disclosed embodiment comprises a method of calibrating an image sensor, wherein the method comprises placing a photoluminescent panel over the display surface, and illuminating a target location on the display surface with visible light. Infrared light that is emitted by the panel in response to the illumination of the display surface is received via the image sensor. The received light then is used to calibrate the device.03-25-2010
20130082980OPTICAL TOUCH DEVICE WITH PIXILATED LIGHT-TURNING FEATURES - This disclosure provides systems, methods and apparatus for a touch screens configured to determine a position of a touch event by selectively redirecting light to correlated locations on a light sensor. In one aspect, the touch screen apparatus can include a light guide forming a touch interface, a light source for injecting light into the light guide, a light sensor for detecting the injected light, and a pixilated light-turning layer. The pixilated light-turning layer can include a plurality of light-turning features forming pixels. The pixels can receive incident light corresponding to the emitted light scattered by an object contacting the light guide. The pixels can redirect the incident scattered light towards the light sensor such that light selectively propagates to one or more correlated light receiving locations. A processor can map the light receiving location to an area contacted by the object, thereby determining a position of a touch event.04-04-2013
20130082981OPTICAL TOUCH SYSTEM AND OPTICAL TOUCH DEVICE AND OPTICAL TOUCH METHOD - An optical touch system includes a display unit, a touch operation unit, and a data processing unit. The display unit is configured for displaying at least a general image frame and displaying a specific pattern frame alternately with the at least a general image frame. The touch operation unit is configured for scanning a part of the specific pattern frame and capturing image data corresponding to the part of the specific pattern frame for transmission. The data processing unit is configured for translating the image data into a coordinate position. Moreover, an optical touch device and an optical touch method also are provided.04-04-2013
20130082982OPTICAL RECEIVING DEVICE AND OPTICAL TOUCH PANEL DEVICE PROVIDED WITH SAME - A light-receiving device 04-04-2013
20130082979METHODS AND APPARATUS FOR RECEIVING USER INPUTS - Methods and apparatus for processing user events are provided. In particular, one or more sensor modules and processor modules are provided that can be operated to detect user events, such as the pressing of an otherwise mechanical switch. In many electronic devices, touch display screens are provided to the user for interfacing with the device. These displays often also include one or more mechanical switches to provide necessary functionality. The functionality, however, comes at the cost of reduced aesthetics, and potentially increased manufacturing costs related to fabricating holes in the display substrate. The sensor module disclosed herein can be configured such that collected pressure data can be focused, such as linear expansion data or deflection data. By collecting two different types of focused data, the apparatus can more accurately determine whether a user event has occurred. Additional types of sensors may also be utilized to provide even more reliable results.04-04-2013
20130033458MULTILAYER STRUCTURE, METHOD FOR PRODUCING THE SAME AND TOUCH SENSITIVE DISPLAY USING THE SAME - The present invention is directed to an optical bonding apparatus with multiple layer structure including a pressure sensitive bonding layer and a thermal flow pressure sensitive bonding layer. The thermal flow pressure sensitive bonding layer is used for bonding to a rough surface of an object and superposing on the pressure sensitive bonding layer.02-07-2013
20130033456OPTICAL TOUCH SYSTEM AND ELECTRONIC APPARATUS INCLUDING THE SAME - An optical touch system includes a touch surface having a first touch region and a second touch region, a reflective member for generating a reflection of an object on the touch surface, an image sensor for providing an image of the object and an image of the reflection, and a processing unit. The image sensor is represented by either first reference coordinate data or second reference coordinate data. The processing unit is configured to compute the coordinate data of the object using the first reference coordinate data, the image of the object, and the image of the reflection to when the object is in the first touch region, and configured to compute the coordinate data of the object using the second reference coordinate data, the image of the object, and the image of the reflection when the object is in the second touch region.02-07-2013
20130033457IMAGE SENSOR AND OPTICAL TOUCH SYSTEM INCLUDING THE SAME - An image sensor includes a plurality of light detecting elements. The plurality of light detecting elements are arranged in a plurality of rows and a plurality of columns, wherein a flat field picture generated by the image sensor, the intensity standard deviation of pixels in each pixel column is greater than that of pixels in any pixel row, or the intensity standard deviation of pixels in each pixel row is greater than that of pixels of any pixel column.02-07-2013
20130033454TOUCH DEVICE AND TOUCH METHOD - A touch method is applied in a touch device. The touch device includes a display unit, first infrared receivers, first infrared emitters, second infrared receivers, second infrared emitters, a storage unit, and motors. The first infrared receivers and the first infrared emitters are arranged on a first side of the display unit, and the second infrared receivers and the second infrared emitters are arranged on a second side of the display unit. The storage unit stores a table recording a relationship between identification and set of coordinates of the infrared receivers. The method includes: controlling motors to drive infrared emitters and infrared receivers to rotate; determining whether electrical signals comprising the identification of one first infrared receiver and one second infrared receiver are simultaneously received; if yes, determining the set of coordinates of the touch spot; determining an icon and determining the corresponding function corresponding to the touch spot.02-07-2013
20130033455LIGHT SENSING PANEL AND DISPLAY APPARATUS HAVING THE SAME - A light sensing panel includes sensors arranged in rows and columns, where the sensors receive a first bias voltage and a second bias voltage and output light sensing signals based on light incident thereto; first and second bias lines which transfers the first and second bias voltages, respectively, to the sensors, where each of the first and second bias lines includes a main line and sub lines diverged from the main line and arranged in a second direction corresponding to the columns;, where the sub lines of the first and second bias lines are alternately arranged, and where when two adjacent sub lines are shorted, the shorted sub line of the first bias line is separated from the main line of the first bias line.02-07-2013
20130033459APPARATUS, METHOD, COMPUTER PROGRAM AND USER INTERFACE - An apparatus, method, computer program and apparatus wherein the apparatus comprises: at least one processor: and at least one memory including computer program code; wherein the at least one memory and the computer program code are configured to, with the at least one processor, enable the apparatus to; detect, using a camera, motion of a user input object; and determine, for performance, a function corresponding to the detected motion of the user input object wherein the function comprises control of an entity within a three dimensional model.02-07-2013
20130038578ELECTRONIC READER DEVICE AND GRAPHICAL USER INTERFACE CONTROL METHOD THEREOF - An electronic reader device with a physical control disposed on a surface of the device housing. The physical control is operable to initiate a first function. A display disposed on the surface of the housing is operable to show a virtual control that initiates a second function. A sensor detects a drag operation moving the virtual control to a position on a border of the display adjacent to the physical control. A processor associates the second function with the physical control in response to the drag operation and performs the second function upon activation of the physical control.02-14-2013
20130038577OPTICAL TOUCH DEVICE AND COORDINATE DETECTION METHOD THEREOF - An optical touch device and a coordinate detection method thereof are disclosed. The optical touch device includes a detection area, a first capture module, a second capture module, and a processing module. The detection area provides a first object and a second object to contact with. The first capture module captures a first captured image from the detection area and captures a first object image and a second object image. The second capture module captures a second captured image from the detection area and captures a third object image and a fourth object image. The processing module calculates coordinates of a plurality of touch point according to the first captured image and the second captured image and determines the plurality of touch point is a real point or a ghost point according to the relation between the first object image to the fourth object image.02-14-2013
20130038576METHOD AND SYSTEM FOR ESTIMATING THE TENDENCY OF PRESSURE CHANGE ON A TOUCH PANEL - A method and a system for estimating the tendency of pressure change on a touch panel are disclosed. The method includes: getting first left-image data and first right-image data by using a left image-capturing device and a right image-capturing device at a first time, respectively; calculating first estimation pressed-area parameter according to the first left-image data and the first right-image data; getting second left-image data and second right-image data by using the left image-capturing device and the right image-capturing device at a second time, respectively; calculating second estimation pressed-area parameter according to the second left-image data and the second right-image data; and compare the first estimation pressed-area parameter with the second estimation pressed-area parameter.02-14-2013
20100045634OPTICAL DIODE LASER TOUCH-CONTROL DEVICE - An optical diode laser touch-control device includes two light emitters and a plurality of receivers around a touch-acting area of a touch panel. The light emitters are disposed on two adjacent corners of the touch panel in the touch-acting area, and each employs a diode laser to continuously project a diffused light through a lens for covering the touch-acting area to form an interlaced touch screen. The receivers, which are capable of receiving the diffused light, are disposed on the touch panel around the touch-acting area to receive the diffused light. As a finger touches the touch-acting area of the touch panel, a part of the diffused light is blocked from being projected onto the receivers, and the touch position of the touch-acting area may be calculated accordingly.02-25-2010
20100039408LIGHT PEN, PHOTO DETECTIVE LIQUID CRYSTAL DISPLAY DEVICE AND DISPLAY DEVICE HAVING THE LIGHT PEN - A photo detective LCD device includes a light pen. The light pen includes a body, a driving pulse generating module and a light generating module. The body has a pen shape, and an end of the body includes an opening through which light exits. The driving pulse generating module is disposed in the body and generates first and second driving power pulses having first and second frequencies, respectively. The light generating module generates first and second light in response to the first and second driving power pulses, respectively. The first and second light flickers in a third frequency and a fourth frequency, respectively. The power consumption is reduced, and the brightness of sensing light is enhanced. The light pen generates light having at least two different frequencies, and the display device recognizes light generated from the light pen effectively. Therefore, the display device may operate without failure.02-18-2010
20130207937Optical Stylus Interaction - Optical stylus interaction techniques are described. In an implementation, a display of a computing device includes optical sensors capable of detecting images projected by a stylus. A stylus may include a projection system to project various images used to convey interaction information that may be interpreted by the computing device. Based on recognition of different projected images, a context for interaction of the stylus may be ascertained and corresponding operations may be performed by the computing device. This may include resolving a spatial position of the stylus relative to the display device as well as movement of the stylus and images that defines various stylus-based gestures. In addition, the environment for optical stylus interaction enables a writing mode that emulates natural writing by mapping different projectable images to changes in pressure applied to the stylus when in contact with the display.08-15-2013
20130207936METHOD AND DEVICE FOR RECEIVING REFLECTANCE-BASED INPUT - Methods and devices for receiving reflectance-based input are provided. In some embodiments, the electronic device includes a plurality of electromagnetic radiation emitting devices and one or more electromagnetic radiation receiving devices for receiving reflected light from the electromagnetic radiation emitting devices. In one aspect, a method includes: repeatedly performing a reflectance measuring routine, the reflectance measuring routine including: alternatingly outputting light at each of the plurality of electromagnetic radiation emitting devices; and monitoring light received at one or more of the electromagnetic radiation receiving devices as a result of the alternating output; determining, based on the light received at the one or more electromagnetic radiation receiving devices, whether a predetermined gesture has been performed; and performing a function associated with the predetermined gesture when the predetermined gesture has been performed.08-15-2013
20120206415AREA SENSOR, AND LIQUID-CRYSTAL DISPLAY DEVICE EQUIPPED WITH AN AREA SENSOR - In order to simultaneously carry out, at a smaller sensor density, (i) detection of color information (recognition of a color) of visible light which enters a detection target surface and (ii) detection of an input position of the visible light, a liquid-crystal panel (08-16-2012
20120206410METHOD AND SYSTEM FOR GENERATING CALIBRATION INFORMATION FOR AN OPTICAL IMAGING TOUCH DISPLAY DEVICE - A system for generating calibration information for an optical imaging touch display device includes a calibration tool and a processor. The calibration tool is disposed within an image capturing range of an image capturing unit, and has a surface with mark patterns. Each adjacent pair of the mark patterns defines a pattern boundary. The calibration tool is disposed such that the pattern boundary forms a predefined positional relationship with a corresponding predefined location on the optical imaging touch display device. The processor receives an image frame corresponding to an image of the surface of the calibration tool, performs edge detection on the image frame to determine a position of each of at least one detected pattern edge, and generates the calibration information with reference to the position thus determined and the corresponding predefined location.08-16-2012
20120206409OPTICAL TOUCH PANEL AND LIGHT GUIDE MODULE THEREOF - An optical touch panel includes a panel and a light guide module. The light guide module is disposed on the panel, and the light guide module includes a printed circuit board, at least one light emitting element, and a light guide strip. The light emitting element is electrically disposed on the printed circuit board. The light guide strip is disposed on the printed circuit board, and wraps the light emitting element. Additionally, the light emitting element emits light rays, and the light rays penetrate the light guide strip and are emitted to the panel.08-16-2012
20130135257DISPLAY DEVICE INCLUDING OPTICAL SENSOR - A display device includes: a first display panel; a second display panel facing the first display panel and including an optical sensor; an electro-optical active layer positioned between the first display panel and the second display panel; and a sensing gate driver including a first sensing gate driver and a second sensing gate driver, the sensing gate driver configured to transmit a sensing gate signal to the optical sensor, in which a first sensing gate off voltage applied to the first sensing gate driver is substantially the same as a second sensing gate off voltage applied to the second sensing gate driver.05-30-2013
20100103143TOUCH SCREEN SIGNAL PROCESSING - A touch screen which uses light sources at one or more edges of the screen which directs light across the surface of the screen and at least two cameras having electronic outputs located at the periphery of the screen to receive light from said light sources. A processor receives the outputs of said cameras and employs triangulation techniques to determine the location of an object proximate to said screen. Detecting the presence of an object includes detecting at the cameras the presence or absence of direct light due to the object, using a screen surface as a mirror and detecting at the cameras the presence or absence of reflected light due to an object. The light sources may be modulated to provide a frequency band in the output of the cameras.04-29-2010
20100103141Techniques for Controlling Operation of a Device with a Virtual Touchscreen - A technique for controlling operation of a device with a virtual touchscreen includes defining an area of a surface, associated with the device, as the virtual touchscreen. An operation within the device is then initiated based on activity within the virtual touchscreen. An overlay may be provided, on a display screen of the device, to indicate a location of the virtual touchscreen with respect to, for example, a keyboard of the device.04-29-2010
20100097348TOUCH SCREEN TOOL - A touch screen panel is disclosed, which is capable of sensing an exact position touched by a user or instrument, or a pressured applied to the touched position, wherein the touch screen panel comprises a core including a plurality of horizontal and vertical lines provided in a grid shape, wherein the core has a first refractive index, and an upper surface of the core is exposed to the atmosphere; an intermediate clad formed between each of gaps included in the core, wherein the intermediate clad has a second refractive index which is lower than the first refractive index, and a height of the intermediate clad is identical to a height of the core; an optical source configured to apply an optical signal to an input end of each of the plurality of horizontal and vertical lines; and a plurality of receivers configured to sense an intensity of the optical signal passing through an output end of each of the plurality of horizontal and vertical lines, the optical signal applied by the optical source.04-22-2010
20090160823Optical Contact Controlled Medium Display - An optical contact controlled medium display includes a computing device containing at least one information, an indication device connected to the computing device via a video signal unit to indicate the at least one information of the computing device, and an optical position detection device mounted on the indication device and electrically connected to the computing device. Thus, when the indication device is provided with a touch points the optical position detection device detects a position signal of the touch point from the indication device and transmits the position signal of the touch point to the computing device so that the computing device can compute a position of the touch point.06-25-2009
20130027355INPUT DISPLAY DEVICE, INPUT DEVICE, AND CONTROL METHOD OF INPUT DEVICE - The present invention provides an input display device including: a display device which recognizes an input position with a light sensor by blinking a backlight; and an input device of a light-emitting type (light pen), wherein a light emitting diode (LED) of the input device is adapted so that (i) its non-light-emitting period overlaps at least a part of a period (X) during which the backlight is OFF and (ii) its light-emitting period overlaps at least a part of a period (Y) during which the backlight is ON. According to this arrangement, it is possible to realize an input display device which can reduce the effect of ambient light and in which a light pen can be used (in addition to a finger and a reflective pen etc.) as inputting means.01-31-2013
20130027354DISPLAY DEVICE - Disclosed is a liquid crystal display device (01-31-2013
20130027352Projection Systems for Touch Input Devices - In infrared touch input devices that detect and locate a touch object from the blocking of light paths propagating along the X,Y axes, an ambiguity arises when two touch objects are present. This ambiguity can be resolved by the provision of additional light paths angled to the X,Y axes. The present invention provides projection systems that include a light splitting element for splitting collimated sheet of light into two or more sets of beam paths, thereby providing the additional light paths for resolving the double touch ambiguity. In preferred embodiments the light splitting element is in the form of a prism film.01-31-2013
20130027351OPTICAL NAVIGATION MODULES FOR MOBILE COMMUNICATION DEVICES - The disclosure provides a navigation assembly having a compact design that reduces a depth dimension in a z-direction or along a z-axis that is substantially perpendicular to a front face of a mobile communication device. The navigation assembly includes an optical lens unitarily formed with a cover, the cover having an upper surface that receives user inputs thereon and a lower surface that receives the optical lens. A sensor array is provided in optical communication with the optical lens and a coupling structure is provided to mechanically couple the optical lens and the sensor array. The cover overlays a gap formed between the navigation assembly and adjacent keys to prevent contaminants such as liquids, dust, lint, or the like, from entering an interior of the mobile communication device. The cover also includes a decorative ring that defines a tracking window and outlines a perimeter of the underlying sensor arrays.01-31-2013
20100110042INPUT/OUTPUT IMAGE PROJECTION SYSTEM OR THE LIKE - An input/output device has a light source in optical communication with a digital mirror device (DMD) special light modulator for projecting an image and an image sensor in optical communication along a shared optical path with the same spatial light modulator for receiving an image.05-06-2010
20130135259Robust Optical Touch - Screen Systems And Methods Using A Planar Transparent Sheet - An optical touch screen that utilizes a planar transparent sheet and that is configured to determine the position of a touch event on the transparent sheet is disclosed. Light-source elements and light-sensing elements are operably disposed at the transparent sheet perimeter. Light is detected over lines-of-sight between the light-source elements and the light-sensing elements. Attenuated lines-of-sight due to a touch event are determined. Polygons are established by overlapping triangles defined by the limiting lines of sight for each light-sensing element. Polygons with attenuations below the attenuation threshold are eliminated. The centers of the remaining polygons are then determined to establish the locations of the touch events. The systems and methods provide robust detection of multiple touch events.05-30-2013
20120262422OPTICAL TOUCH MODULE AND METHOD THEREOF - An optical touch module includes a transparent cover plate, a light bar device, and an optical sensing device. The transparent cover plate has a touch surface. The light bar device is disposed along a side of the transparent cover plate, including a light emitting unit and a light guide bar. The light guide bar is disposed at a light emitting side of the light emitting unit for guiding light emitted by the light emitting unit into the transparent cover plate. The optical sensing device is disposed at a corner side of the transparent cover plate for sensing a reduced optical signal caused by total internal reflection of the light in the transparent cover plate being frustrated at a position where a touch object touches the touch surface. Accordingly, the optical sensing device can position the touch object based on the reduced optical signal.10-18-2012
20130027358STYLUS AND TOUCH INPUT SYSTEM - A touch input system including a stylus and a display device is provided. The stylus includes a battery module, a touch portion, a transducer module and a RF transmitting module. When a contact pressure is acted on the touch portion, the touch portion is electrically connected to the battery module by the contact pressure and emits a light signal. The display region receives and reacts to the light signal, and the contact pressure is transformed into an electrical signal by the transducer module. The RF transmitting module is electrically connected to the transducer module and transmitting the electrical signal. The display device includes a display region and a RF receiving module.01-31-2013
20130027357TOUCH LOCATING METHOD AND SYSTEM, DISPLAY - The present invention relates to a touch positioning method and system as well as a display device. Said touch positioning method is applied to an optical touch screen comprising a touch detection area, two imaging devices, a light source and a reflector, the touch detection area and its mirror image touch detection area with regards to the reflector residing within field of view of each imaging device, the method comprising: obtaining location information of touch objects based on image data of an actual touch object and its mirror image touch object with regards to said reflector acquired by said two imaging devices, said touch objects comprise said actual touch object and virtual touch object; obtaining location information of said actual touch object from the location information of said touch objects based on the mirror image relation between said actual touch object and its mirror image touch object as well as the location information of said touch detection area. The present invention may avoid the presence of “ghost images” during the positioning of more than two touch objects and accurately locate where the touch objects reside.01-31-2013
20130027356DISPLAY DEVICE AND DISPLAY DIRECTION SWITCHING SYSTEM - Disclosed is a liquid crystal display device that has a function of detecting the position where light emitted from an input pointer 01-31-2013
20130027353TOUCH-TYPE PORTABLE TERMINAL - A touch type portable terminal is disclosed, whereby a user is prevented from viewing a wrong auto focusing area by indicating an indicator in response to changes in view angle of lenses during auto focusing operation.01-31-2013
20120182268POSITION DETECTION SYSTEM, DISPLAY PANEL, AND DISPLAY DEVICE - A position detection unit divides a plurality of LEDs (07-19-2012
20120182267TOUCH PANEL - Disclosed is a touch panel comprising a display panel (for example, a liquid crystal panel) (07-19-2012
20120182266MULTI-TOUCH SENSING THROUGH FRUSTRATED TOTAL INTERNAL REFLECTION - High-resolution, scalable multi-touch sensing display systems and processes based on frustrated total internal reflection employ an optical waveguide that receives light, such as infrared light, that undergoes total internal reflection and an imaging sensor that detects light that escapes the optical waveguide caused by frustration of the total internal reflection due to contact by a user. The optical waveguide when fitted with a compliant surface overlay provides superior sensing performance, as well as other benefits and features. The systems and processes described provide true multi-touch (multi-input) and high-spatial and temporal resolution capability due to the continuous imaging of the frustrated total internal reflection that escapes the entire optical waveguide. Among other features and benefits, the systems and processes are scalable to large installations.07-19-2012
20120182265Apparatus with Correlated Emitter-Detector Pairs - An apparatus such as a touch screen display includes correlated emitter-detector pairs for determining the amount of electromagnetic radiation received at a detector from its paired emitter. The apparatus comprises an array of emitters operable to emit electromagnetic radiation, an array of detectors for detecting the electromagnetic radiation, and drive control circuitry configured to control the array of emitters so that they emit pulses of electromagnetic radiation. The amplitude of the pulses is modulated using mutually orthogonal binary vectors such as a Paley construction of the Hadamard matrix. Each emitter has a different vector associated with it. Detection circuitry is provided to detect the electromagnetic radiation reaching each particular detector in the array of detectors using the mutually orthogonal binary vector associated with the correlated emitter to produce a correlation between particular emitter-detector pairs. The arrangement can discriminate between near field and touching objects.07-19-2012
20120182264NON-PLANAR REFLECTIVE FOLDED OPTICS - An optical sensor assembly is disclosed. The optical sensor assembly includes a folded optical system that utilizes one or more non-planar reflective surfaces that enable the manipulation or conditioning of the overall thickness of the sensor assembly, the field of view of the sensor assembly, and the image size, either independently or in combination.07-19-2012
20100328268INFORMATION INPUT DEVICE AND DISPLAY DEVICE - An information input device includes a touch panel which is provided with a touch sensor capable of sensing a position in which a sensing target body is close to a sensing surface thereof. The touch sensor includes a scanning electrode and a detection electrode which faces and is spaced from the scanning electrode with a dielectric body being interposed therebetween, the touch sensor being configured so that electrostatic capacitance which is formed between the scanning electrode and the detection electrode is varied when the sensing target body is close to the detection electrode. The detection electrode is formed with a slit in a surface thereof which faces the scanning electrode, and a floating electrode is installed in the slit.12-30-2010
20100328267OPTICAL TOUCH DEVICE - An exemplary optical touch device includes a display panel including a display surface at a front side thereof, two infrared light sources positioned on the display panel, three linear sensors positioned at three sides of the display panel respectively, a remote control, two infrared camera modules, and a receiver. The infrared light sources are configured for emitting infrared light covering the entire display surface. Each linear sensor is configured for capturing images of the infrared light reflected by any object on the display surface. The remote control is configured for projecting an infrared light spot on the display surface and generating and sending control signals according to a movement of the remote control. The two infrared camera modules are configured for capturing images of a movement track of the infrared light spot on the display surface. The receiver is configured for receiving the control signals.12-30-2010
20130050147TOUCH SENSING DEVICE - A touch sensing device includes a substrate, first and second bottom electrodes that are electrically insulated, an active layer, and first and second top electrodes. The substrate has a touch sensing region where the first bottom electrode is located and a non-touch sensing region where the second bottom electrode is located. The active layer on the substrate extends from the touch sensing region to the non-touch sensing region. The first top electrode is on the active layer and above the first bottom electrode. The second top electrode is on the active layer and above the second bottom electrode. A first portion of the active layer in the touch sensing region, the first top electrode, and the first bottom electrode constitute an optical touch sensing unit. A second portion of the active layer in the non-touch sensing region, the second top electrode, and the second bottom electrode constitute a solar cell.02-28-2013
20130050149INTERACTIVE INPUT SYSTEM AND PANEL THEREFOR - An interactive panel comprises an optical waveguide within which totally internally reflected (TIR) illumination propagates, a display device beneath the optical waveguide and a partially transparent layer beneath the display device. The partially transparent layer reflects backlight illumination towards the display device and at least allows TIR illumination escaping from the optical waveguide and passing through the optical waveguide and the display panel, as a result of one or more contacts made on the optical waveguide, to pass therethrough.02-28-2013
20130050148TOUCH SENSING AND REMOTE SENSING OPTICAL TOUCH SCREEN APPARATUSES - Optical touch screen apparatuses with remote sensing and touch sensing by using a light sensor transistor including an oxide semiconductor transistor. The optical touch screen apparatus includes a pixel array of a plurality of sensing pixels arranged in a plurality of rows and a plurality of columns. Each of the sensing pixels includes a light sensing pixel for sensing light that is irradiated by an external light source and a touch sensing pixel for sensing display light that is reflected by a screen touch. The light sensing pixel includes a first light sensor transistor and a first switch transistor connected each other in series, and the touch sensing pixel includes a second light sensor transistor and a second switch transistor connected each other in series.02-28-2013
20130069915METHODS FOR INTERACTING WITH AN ON-SCREEN DOCUMENT - Methods and systems are provided for enabling a user to interact via touch input with a document displayed on an electronic device such as an electronic reader. The system determines a measure of the size or shape of a touch object, and accordingly associates input gestures with different actions. A user can therefore use finger touch input for page turns and stylus touch input for electronic inking operations, without having to toggle between modes. The associated actions can be modified with a second touch event, such as a thumb touch in a corner of the display area. Infrared touch systems are well suited to implementing the inventive methods in electronic readers because they do not require the presence of any high refractive index layers in front of the display.03-21-2013
20130069911DISPLAY APPARATUS, AND TOUCH SENSING APPARATUS AND METHOD - A display apparatus is provided. The display apparatus includes a display unit which displays an image; a sensing unit which generates an IR scan image of a surface of the display unit; an image processing unit which detects touched areas that are touched by a user from the IR scan image, detects an unintentional touched area, from among the touched areas, that has an unintentional touch pattern, and removes the unintentional touched area from the IR scan image; and a control unit which processes an event corresponding to a remaining touched area from among the touched areas.03-21-2013
20130069914TOUCH PANEL - A touch panel is provided. The touch panel includes a plurality of pixels, wherein each pixel includes M*N sub-pixels, at least m sub-pixels each include at least one photo sensitive area and at least one effective display area, the other n sub-pixels each include only at least one effective display area, M≧2, N≧1, m≦M, m+n=M and m≧0. A first color filter film is disposed over a photo sensor of the photo sensitive area and a second color filter film is disposed over the effective display area, wherein the color of the first and second color filter films are the same at the same sub-pixel. The photo sensors at the same column of the sub-pixels are electrically connected by a signal readout line, wherein only one signal readout line is disposed at every M column of the sub-pixels.03-21-2013
20130069912Projector - This projector includes a laser beam emitting portion, a projection portion projecting an image on an arbitrary projection region by scanning laser beams, and a detecting portion detecting a laser beam reflected by the projection region and a detection object and outputting a detection signal corresponding to the detected laser beam, while the detection signal output from the detecting portion is corrected on the basis of a reference signal corresponding to the laser beam reflected by the projection region and detected by the detecting portion.03-21-2013
20130069913OPTICAL TOUCH MODULE - An optical touch module includes a transparent substrate and two light processing units. The transparent substrate includes a touch surface, a sub-surface parallel to the touch surface, and a surrounding side surface connected to the touch surface and the sub-surface. The two light processing units are positioned on two neighboring corners of the transparent substrate, and each of the two light processing units includes a light source and a detector. The light source and the detector respectively have a light emitting surface and a light entry surface, the light emitting surface of the light source and the light entry surface of the detector both face the surrounding side surface, and the two light processing units are positioned beneath the touch surface.03-21-2013
20130088460OPTICAL TOUCH SCREEN APPARATUS AND METHOD OF MANUFACTURING THE OPTICAL TOUCH SCREEN APPARATUS - An optical touch screen apparatus that includes a display pixel including a display cell and a driving transistor, the display cell configured to display an image and the driving transistor configured to turn on or off the display cell, the driving transistor having a double gate structure; and a light-sensing pixel including a light-sensing transistor and a switch transistor, the light-sensing transistor configured to sense incident light and the switch transistor configured to output data from the light-sensing transistor, the switch transistor having the double gate structure, wherein the double gate structure is a structure in which a bottom gate and a top gate are arranged such that a channel layer is disposed therebetween. The top gate may be formed together when forming a transparent electrode in the pixel, and thus even when the top gate is further included, the number of manufacturing processes is not increased.04-11-2013
20130088461VISION-BASED INTERACTIVE PROJECTION SYSTEM - Techniques are provided to improve interaction between a user and a projection system. In some embodiments, an image of a user in front of a display screen is captured. An inference can then be made as to whether a user is touching a display screen based on an analysis of shadows and/or variation of brightness (i.e., intensities) across pixels in the image. For example, it may be inferred that the object is: (1) approaching the screen when a region surrounding a top of the object is characterized by a relatively small brightness variation; (2) hovering near the screen when the brightness variation is large and the region includes a dark extremum (caused by a shadow); and (3) touching the screen when the brightness variation is large and the region includes a light extremum.04-11-2013
20130088462SYSTEM AND METHOD FOR REMOTE TOUCH DETECTION - Embodiments of the present invention disclose a system and method for remote touch detection. According to one embodiment, an infrared light source is projected across a front surface of a display via at least one light emitting device. Furthermore, an infrared signal is transmitted in a direction of the front surface of the display via a remote pointing device. A surface target position is then determined based on measurement data caused by disruption of a portion of the infrared light source of the light emitting device by either the infrared signal or a physical touch from a user.04-11-2013
20100134444IMAGE PROCESSING DEVICE, CONTROL PROGRAM, COMPUTER-READABLE STORAGE MEDIUM, ELECTRONIC APPARATUS, AND IMAGE PROCESSING DEVICE CONTROL METHOD - The invention includes: a pixel-value vertical-gradient-quantity calculation section (06-03-2010
20100134446OPTICAL OUTPUT DEVICE - The present invention discloses an optical input device, which comprises a display panel having a displaying area functioning as an interface for detecting a position of an object; a backlight module providing light sources for the display panel; and at least one image sensor arranged behind the backlight module and capturing a positional image, which is formed on the displaying area by an object reflecting the light emitted by the light sources. The present invention not only can decrease the thickness of the optical input device but also can reduce the complexity of the optical system.06-03-2010
20100134445PLASMA DISPLAY DEVICE - A plasma display device that enables a reduction of costs in implementing a touch panel function using infrared rays generated when displaying an image, which are emitted in a substantially uniform dispersion from a display area. One embodiment includes a plasma display panel (PDP) for displaying the image and a pair of infrared sensor cameras at two corners of the PDP. The infrared sensor cameras are either on the front or rear side of the PDP, and are utilized to detect changes in the amount of infrared rays emitted from the PDP. A controller determines a position where the amount of infrared rays is changed, which corresponds to a touch position, and transmits a detection signal indicating the location of the change in the amount of infrared rays. The infrared sensor camera has a lens with a view angle in the range of 90° to 180°.06-03-2010
20100134447INPUT DEVICE AND MOBILE TERMINAL - An input device detects a position of an object in relation to a display by using the light emitting elements and light receiving elements. When the high accuracy is not required for the position detection, at least one of the light emitting elements and the light receiving elements is turned off.06-03-2010
20100103140TOUCH SENSITIVE DEVICE USING OPTICAL GRATINGS - A touch sensitive device includes a deformable material embedded with optical gratings and a light source to send light into the deformable material to reflect off of, or transmit through, one or more of the optical gratings. The touch sensitive device further includes a processing unit to determine if a touch has occurred on the deformable material based on the reflection of the light off of the one or more of the optical gratings or based on the transmission of light through the one or more of the optical gratings.04-29-2010
20120218230INFRARED TOUCH SCREEN DEVICE AND MULTIPOINT LOCATING METHOD THEREOF - An infrared touch screen device and a multi-touch locating method thereof are provided. On the touch screen, large angle infrared emitting elements and infrared receiving element are used to realize the axis scanning of multi-angle by an optimized sampling and processing circuit. After the data processing of removing ambient light, normalization and so on for original data of the axis scanning, the logic axis touch information is generated, and a luminance map of the current frame is generated according to the information. Multiple valid touch regions are recognized by contrast with a theoretical touch luminance map. Then a tracing algorithm of image is used, and a multi-touch event is outputted finally. The touch device is simple, reliable and accurate and has wide range application.08-30-2012
20120218229Detecting Multitouch Events in an Optical Touch-Sensitive Device Using Touch Event Templates - An optical touch-sensitive device is able to determine the locations of multiple simultaneous touch events. The optical touch-sensitive device includes multiple emitters and detectors. Each emitter produces optical beams which are received by the detectors. Touch events disturb the optical beams. Touch event templates are used to determine the actual touch events based on which optical beams have been disturbed.08-30-2012
20120218228TOUCHSCREEN DISPLAYS INCORPORATING DYNAMIC TRANSMITTERS - Systems and methods for implementing touchscreen displays that utilize a transmitter system to dynamically scan at least one light beam across a surface of interest such that substantially every point in a region above the surface of interest is dynamically scanned by a light beam from two directions, a receiver system to receive and detect the at least one dynamically scanned light beams, and a processor configured to determine locations of contact are provided. The systems and methods may utilize a transmitter system that includes dynamic transmitters, which may be in the form MEMS micromirrors used in conjunction with infrared semiconductor lasers.08-30-2012
20120218227INFORMATION PROCESSING APPARATUS AND COMPUTER-READABLE STORAGE MEDIUM - According to one embodiment, an information processing apparatus includes a display with a touch panel, a camera and an image recognition module. The image recognition module recognizes a type of an object used for inputting to the touch panel in an image acquired by the camera. The image recognition module comprises a first narrowing module and a second narrowing module. The first narrowing module extracts an image to be used for recognizing the type of the object from acquired images based on timing information indicating timing of the inputting. The second narrowing module selects a recognition range to be used for recognizing the type of the object from a photographing region of the extracted image based on positional information indicating an input position on the touch panel. The timing information and the positional information is included in the input information obtained from the touch panel.08-30-2012
20120218226LIGHT DIRECTING ELEMENT AND INFRARED TOUCH SCREEN DEVICE HAVING SAME - A light directing member for an infrared touch screen device is provided. The infrared touch screen includes a touch screen having a first side and an opposing second side, an infrared emitter for emitting infrared light beams toward the light directing element, and a plurality of infrared receivers arranged along the first side of the touch screen. The light directing member is positioned at the second side of the touch screen, and includes an outwardly curved surface facing the infrared emitter and a plurality of reflective slanted surfaces. The curved surface collimates the infrared light beams emitted from the infrared emitter into parallel infrared light beams. The plurality of reflective slanted surfaces are aligned with the respective infrared receivers, and for receiving and reflecting corresponding portions of the collimated parallel beams to the respective infrared receivers. A related device is also provided.08-30-2012
20120218225OPTICAL SCANNING TYPE TOUCH APPARATUS AND OPERATION METHOD THEREOF - An optical scanning-type touch apparatus and an operation method thereof are provided. The optical scanning-type touch apparatus includes a touch area, a light scanning module, an imaging module and a calculating unit. The light scanning module is disposed at one corner of the touch area to emit a scanning light for scanning the touch area. The imaging module is disposed at another corner of the touch area adjacent the light scanning module to obtain a first angle between the scattering light and a edge of the touch area, wherein the edge of the touch area is between the light scanning module and the imaging module. The calculating unit receives the first angle, a second angle and a distance between the light scanning module and the imaging module to calculate a position of the object on the touch area.08-30-2012
20130057517Optical Touch Panel System, Optical Apparatus and Positioning Method Thereof - The present invention discloses an optical touch panel system and a positioning method for positioning an object in a touch control area. The system includes: at least two reflective elements respectively disposed on a first side and a second side of the touch control area, wherein the sum of lengths of the first side and the second side is larger than the sum of lengths of the two reflective elements; two lighting elements respectively disposed on a third side and a fourth side of the touch control area; an image sensor forming projected images by capturing an image of the object and at least one mirror image of the object formed by the two reflective elements; and a processor calculating the coordinates of the object according to geometric information of the projected images.03-07-2013
20130057516OPTICAL TOUCH-CONTROL SYSTEM WITH TRACK DETECTING FUNCTION AND METHOD THEREOF - The optical touch-control system processing track detection includes a light source for emitting a specific light; a sensing array for sampling the specific light reflected by an instruction object in a predetermined period of time for accordingly generating a first and a second sensing image signals; a motion detector for determining the track of the instruction object for outputting a motion vector signal according to the first and the second sensing image signals; and a processor for controlling movement of a target object according to the motion vector signal and the predetermined period of time; wherein the instruction object moves within a first zone of the sensing array.03-07-2013
20130057518DISPLAY DEVICE WITH TOUCH SENSOR - Provided is a display device that has a photodetection element in a pixel and can automatically correct a photosensor signal during operation, while resolving offset error with respect to the true black level or white level. As operation modes, a sensor row driver (03-07-2013
20130057515DEPTH CAMERA AS A TOUCH SENSOR - Architecture that employs depth sensing cameras to detect touch on a surface, such as a tabletop. The act of touching is processed using thresholds which are automatically computed from depth image data, and these thresholds are used to generate a touch image. More specifically, the thresholds (near and far, relative to the camera) are used to segment a typical finger that touches a surface. A snapshot image is captured of the scene and a surfaced histogram is computed from the snapshot over a small range of deviations at each pixel location. The near threshold (nearest to the camera) is computed based on the anthropometry of fingers and hands, and associated posture during touch. After computing the surface histogram, the far threshold values (furthest from the camera) can be stored as an image of thresholds, used in a single pass to classify all pixels in the input depth image.03-07-2013
20090091555Non-Intrusive Capture And Display Of Objects Based On Contact Locality - Methods, apparatus, or products for displaying an image of an object placed on a surface computer, the surface computer including a surface, surface computer capable receiving multi-touch input through the surface and rendering display output on the surface, the surface computer including a scanner, that include: detecting, by the surface computer, an object placed on the surface; identifying, by the surface computer, a region of the surface upon which the object is placed; scanning, by the surface computer using the scanner, the identified region of the surface to create an object image of the object; and rendering, by the surface computer, the object image within the identified region without modifying portions of any other images rendered on the surface outside the identified region.04-09-2009
20090091553DETECTING TOUCH ON A SURFACE VIA A SCANNING LASER - The detection of touch on an optical touch-sensitive device is disclosed. For example, one disclosed embodiment comprises a touch-sensitive device including a display screen, a laser, and a scanning mirror configured to scan light from the laser across the screen. The touch-sensitive device also includes a position-sensitive device and optics configured to form an image of at least a portion of the screen on the position-sensitive device. A location of an object relative to the screen may be determined by detecting a location on the position-sensitive device of laser light reflected by the object.04-09-2009
20120306821FORCE-SENSING MODULES FOR LIGHT SENSITIVE SCREENS - A light sensitive screen includes at least one sensing element each being configured to detect a force applied to a position of the light sensitive screen and generate an electrical signal when a force is detected, and a sensor module configured to receive and process the electrical signal from the at least one sensing element. The sensor module may amplify the electrical signal from one of the at least one sensing element and generate an amplified signal, compare the amplified signal with a threshold and generate a comparing result, and generate a digital signal based on the comparing result, the digital signal including information as to whether the position of the light sensitive screen is touched.12-06-2012
20120306820Optical touch device and locating method thereof - In an optical touch device and locating method thereof, light sensor modules are mounted on a panel body. Each light sensor module includes an array of light sensors each assigned with an individual index corresponding to angle information thereof. A look-up table includes the angle information corresponding to the indexes assigned respectively to the light sensors of the light sensor modules. A processing unit receives from each light sensor module a number of sensing signals generated by a series of the light sensors in response to touching of an object in a touch area of the panel body, and determines a position of a touch point of the object in the touch area based on the sensing signals from the light sensor modules, and the look-up table.12-06-2012
20110012868OPTICAL TOUCH APPARATUS AND OPERATING METHOD THEREOF - An optical touch apparatus includes an inputting interface, an optical module, a light receiving module, and a processing module. The inputting interface includes a surface and a light transmitting unit under the surface. The optical module and the light receiving module are set on a first side and a second side of the inputting interface. The optical module receives an incident beam and generates a plurality of parallel sensing lights according to the incident beam. When the plurality of parallel sensing lights pass the light transmitting unit to the light receiving module, the light receiving module generates a sensing result according to the condition the light receiving module receives the plurality of sensing lights. The processing module determines a touch point position formed on the surface according to the sensing result.01-20-2011
20110012867OPTICAL TOUCH SCREEN DEVICE - An optical touch screen device includes a display screen, a number of infrared sensors, two infrared sources, and a processing unit. The display screen has N sides, wherein N represents an integer greater than two. The number of infrared sensors is N−1. The N−1 infrared sensors are arranged adjacent N−1 sides of the display screen, respectively. The two infrared light sources are arranged at the remaining side such that light emitted from each of the two infrared sources cover the entire display screen and reaches the infrared sensors. The N−1 infrared sensors are configured for detecting locations of the shadows of an input device formed thereon and generating signals associated with the locations of the shadows. The processing unit is electrically connected to the infrared sensors for processing the signals to calculate a location of an input device on the surface of the display screen.01-20-2011
20110012866AMBIENT CORRECTION IN ROLLING IMAGE CAPTURE SYSTEM - Embodiments are disclosed that relate to the correction of an image acquired in a rolling image capture system for ambient light. One embodiment provides a device comprising a screen, a rolling image capture system, a local light source, and a controller. The controller is configured to operate the local light source while acquiring first and second frames of image data to integrate each field of image sensor pixels for a duration of local+ambient light and for a duration of ambient light such that a sum t01-20-2011
20090267919MULTI-TOUCH POSITION TRACKING APPARATUS AND INTERACTIVE SYSTEM AND IMAGE PROCESSING METHOD USING THE SAME - The present invention provides a multi-touch position tracking technique and an interactive system and a multi-touch interactive image processing method using the same. In the present invention, a light guide element is designed to comprise frustrating structures to frustrate total internal reflection (TIR) so that the light beam therein can be dispersed to form a dispersed optical field distribution. The dispersed optical field is used to respond a physical relation between an object and the light guide element.10-29-2009
20090267918Method for detecting users' pressing action and optical operating unit - A method for detecting users' pressing action is applied to an electronic apparatus which has at least an optical operating unit for an user to operate the electronic apparatus. The method includes the steps of detecting a deformation of a forcing object which forces the optical operating unit; and determining whether the user performs a pressing action according to a deformation degree of the forcing object. Further, an optical operating unit using the method is provided.10-29-2009
20120223916APPARATUS AND METHOD FOR RECEIVING A TOUCH INPUT - Infrared-style touch screens are described having light emission means and light detection means along only two opposing sides of a touch input area, which are nevertheless able to detect and locate a touch object in two dimensions. Certain embodiments use an edge-blurring algorithm to determine the second coordinate, while other embodiments use a form of stereo-scopic vision to determine both coordinates by triangulation. These touch screens have minimal bezel width along two opposing sides of the touch input area, and also offer cost reductions associated with components and product assembly and manufacturing.09-06-2012
20120223915TOUCH MODULE AND TOUCH DISPLAY USING THE SAME - A touch module disposed on a display panel of a touch display is provided. The touch module includes a glass substrate, a polymer layer, a lateral-side light sensor and a vertical-side light sensor. The polymer layer is transparent and flexible. The lateral-side and the vertical-side light sensors are sandwiched between the glass substrate and the polymer layer, and disposed on a lateral edge and a vertical edge of the substrate. A transparent transmission layer is formed between the glass substrate and the polymer layer. When a touch event is triggered on the polymer layer, the backlight corresponding to the touch point is transformed into a side-oriented backlight, which is transmitted in the transparent transmission layer and captured by the lateral-side and the vertical-side light sensor.09-06-2012
20110063257OPTICAL MEMBER FOR A TOUCH PANEL, AND MANUFACTURING METHOD FOR THE SAME - An optical member 03-17-2011
20110063256IMAGE SENSOR FOR TOUCH SCREEN AND IMAGE SENSING APPARATUS - An image sensor for a touch screen, which is installed at an edge of the touch screen and comprises an image sensing element and an optical imaging system, wherein the optical imaging system comprises: at least two separated lenses to constitute at least two optical paths, wherein each of the lenses includes a concavo-convex lens, an objective lens of each of the lenses is faced to the touch screen, an overlapping area of fields of the view of the objective lenses covers the touch screen, a touch object on the touch screen is imaged by each of the optical paths in the optical imaging system respectively, and the formed image is projected on the image sensing element. The image sensor can locate the touch object by utilizing stereo photography. Moreover, the optical imaging system can utilize the interlocked electronic shutters to realize time division multiplex of the image sensing element by the different optical paths, or utilize individual optical paths to realize area division multiplex of the image sensing element.03-17-2011
20110063255OPTICAL WAVEGUIDE WITH LIGHT-EMITTING ELEMENT AND OPTICAL TOUCH PANEL WITH THE SAME - In an optical waveguide 03-17-2011
20110063254OPTICAL TOUCH APPARATUS AND OPERATING METHOD THEREOF - An optical touch apparatus including an input interface, at least one sensing module, and a processing module is disclosed. The input interface includes at least one functional input key, and the position of the at least one functional input key disposed on the input interface corresponds to that of the at least one sensing module disposed on the surrounding of the input interface. The at least one sensing module generates a sensing result according to the condition that the at least one sensing module receives sensing lights. The processing module determines touch point position formed on the input interface according to the sensing result.03-17-2011
20130063403DISPLAY DEVICE WITH TOUCH SENSOR - Provided is a display device that has a photodetection element in a pixel, and has an input function that is not dependent on the light environment. The display device includes a photosensor in a pixel region. The photosensor includes a first sensor pixel circuit that outputs a sensor signal that corresponds to charge accumulated in an accumulation period when a light source for the sensor is lit, and a second sensor pixel circuit that outputs a sensor signal that corresponds to charge accumulated in an accumulation period when the light source is extinguished. The photosensor has, as operation modes in one frame period, a sensor drive mode for obtaining sensor signals from the first and second sensor pixel circuits, a first correction data acquisition mode for acquiring first correction data for correcting the sensor signal from the first sensor pixel circuit, and a second correction data acquisition mode for acquiring second correction data for correcting the sensor signal from the second sensor pixel circuit.03-14-2013
20130063402OPTICAL TOUCH SYSTEM - An optical touch system includes an image sensor for detecting at least one object and a processor coupled to the image sensor. The processor is configured to determine the number of pixel clusters created by the at least one object on an image generated from the image sensor and to generate gesture information when the number of pixel clusters is greater than a predetermined pixel cluster number.03-14-2013
20130063399Optical Pointing Device, And Electronic Apparatus Provided With Same - To produce an ultrathin and easily assembled optical pointing device by reducing the number of components, an optical pointing device (03-14-2013
20130063398OPTICAL TOUCH DISPLAY PANEL AND TOUCH SENSING METHOD THEREOF - An optical touch display panel and a touch sensing method thereof are provided. The optical touch display panel includes a scan line, a readout line, and a photosensing unit. The photosensing unit is activated in response to a scan signal received by the scan line, and reacts a photosensing current on the readout line according to the scan signal and a reference level.03-14-2013
20130063400LIGHT-SENSING APPARATUS, METHOD OF DRIVING THE LIGHT-SENSING APPARATUS, AND OPTICAL TOUCH SCREEN APPARATUS INCLUDING THE LIGHT-SENSING APPARATUS - In one embodiment, a light-sensing apparatus includes a light-sensing pixel array that has a plurality of light-sensing pixels arranged in rows and columns; and a gate driver configured to provide the light-sensing pixels with a gate voltage and a reset signal that have inverted phases. Each of the light-sensing pixels includes a light sensor transistor configured to sense light and a switch transistor configured to output a light-sensing signal from the light-sensor transistor. The gate driver includes a plurality of gate lines connected to gates of the switch transistors, a plurality of reset lines connected to gates of the light sensor transistors, and a plurality of phase inverters each connected between a corresponding reset line and a gate line. Thus, when a gate voltage is applied to one of the plurality of gate lines, a reset signal with an inversed phase to the gate voltage may be applied to a corresponding reset line.03-14-2013
20130063401PROJECTOR DEVICE AND OPERATION DETECTING METHOD - A projector device includes a projection unit configured to project a projection image on a projection surface; an image capturing unit configured to capture an image of an imaging region including the projection surface by imaging elements; a distance acquiring unit configured to acquire distance information indicating a distance between the image capturing unit and an object present in the imaging region based on images output from the imaging elements; an input unit detecting unit configured to detect, based on the distance information, the object as an input unit performing an input operation with respect to the projection image when the object is present in a region of a predetermined distance from the projection surface; and an analyzing unit configured to analyze the input operation with respect to the projection image based on at least one of a position and a movement of the input unit on the projection image.03-14-2013
20090237375APPARATUS USING WAVEGUIDE, OPTICAL TOUCH PANEL, AND METHOD OF FABRICATING WAVEGUIDE - An apparatus, an optical touch panel, a waveguide, and a process for producing a double layered waveguide structure are provided. The apparatus includes a waveguide having a plurality of transmission waveguide elements and a plurality of reception waveguide elements; a light source coupled to the waveguide; a light detector coupled to the waveguide; and a reflector, spaced apart from the waveguide, the reflector reflecting light emitted from the plurality of transmission waveguide elements towards the reception waveguide elements. The waveguide includes a substrate, a first cladding layer, a reception waveguide, a second cladding layer, a transmission waveguide, and a third cladding layer. The optical touch panel includes a waveguide section comprising a waveguide; a mirror; a surface emitting laser; and a detector.09-24-2009
20090027358Input display apparatus and input display panel - Besides a white LED employed as a general backlight, an Ir-LED is provided to apply an infrared light beam from a display face of an input display panel to the outside, reflected light of the infrared light beam is detected by a sensor, and a user's request is thereby accepted.01-29-2009
20100085329Optical touch display device, optical touch sensing device and touch sensing method - The present invention provides an optical touch display device, an optical touch sensing device, and a method for calculating a touch position. The optical touch sensing device can be detachably attached on a display panel using adhesive or other method. The present invention includes a first light source, a second light source, a light sensing element, and a processing unit. When an object blocks the path of light, some light sensing elements will receive some or no light. The processing unit will then compute two line segments based on the positions of light sensing elements receiving some or no light. The two line segments cross each other and their intersection is defined as the position of object or the touch position.04-08-2010
20130162600TOUCH METHOD AND TOUCH SYSTEM - A touch method and a touch system using the same are disclosed. The touch system comprises a display panel and an image sensing module. The touch method comprises the following steps: detecting and acquiring a coordinate position of a touch object entering a sensing region of the display panel; determining whether the touch object is moving or situated at a fixed point according to the coordinate position; sensing a first reflective luminance generated by the touch object at a point via the image sensing module; sensing a second reflective luminance generated by the touch object at the point via the image sensing module after a time period; comparing the first and the second reflective luminance; if the first reflective luminance is different from the second reflective luminance, then determining that the touch object is performing a fixed point rotation; executing a corresponding instruction according to the fixed point rotation.06-27-2013
20130162602DISPLAY DEVICE WITH OPTICAL SENSOR - A plurality of sensor circuits each including an optical sensor and a charge retention transistor each provided between a reset line and an accumulation node are arranged in a pixel region of a display device. In a sensing period, a LOW-level voltage is applied as a reset cancellation voltage to the reset line RSTa, and a HIGH-level voltage is applied to a control line CLKa to control the charge retention transistor to be in an ON state. In a period other than the sensing period, the LOW-level voltage is applied to the control line CLKa to control the charge retention transistor to be in an OFF state, and the HIGH-level voltage is applied as a retention voltage to the reset line RSTa. Thus, a drain-source voltage Vds of the charge retention transistor is lowered, a leakage current through the charge retention transistor is reduced, and a light detection accuracy is enhanced. A substantially middle voltage between a reset voltage and a voltage at an accumulation node at the sensing of a maximum amount of light may be used as the retention voltage.06-27-2013
20090002342Information Processing Device - In a display device having a dual view display function, provided is an information processing device which is capable of causing a user who performs an operation to feel an intuitive operation and which is capable of providing a user who does not perform the operation with an improved viewability. The information processing device includes: a display section (01-01-2009
20120113062DISPLAY WITH AN OPTICAL SENSOR - A display system can include a panel 05-10-2012
20120113061INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AND PROGRAM - Provided is an information processing apparatus including a position detection unit for detecting positions of a plurality of operating tools pressing a screen, a pressure intensity detection unit for detecting pressure intensity of each of the operating tools, a storage unit having recorded thereon predetermined relative information indicating a relative position and a pressure intensity ratio between operating tools, a relative information detection unit for detecting the predetermined relative information that is approximate to the relative position between operating tools obtained from information on the positions detected by the position detection unit and the pressure intensity ratio between operating tools obtained from information on the pressure intensity detected by the pressure intensity detection unit, and a function providing unit for providing a predetermined function corresponding to the predetermined relative information detected by the relative information detection unit.05-10-2012
20120113060SENSOR CIRCUIT AND DISPLAY APPARATUS - A sensor circuit or a display apparatus from which a highly accurate sensor output can be obtained includes a photodiode (photodetecting element); a capacitor connected to the photodiode via an accumulation node; a reset signal line to which a reset signal is supplied; a readout signal line to which a readout signal is supplied; a thin-film transistor (sensor switching element) that makes the accumulation node and an output line conductive with respect to each other and outputs an output signal according to the potential of the accumulation node; a microswitch that is capable of switching connection and disconnection between the accumulation node and an input electrode and provides connection when a pressure is applied by a touching operation; and a thin-film (control switching element) for switching conduction and non-conduction between the microswitch and the accumulation node.05-10-2012
20120113059SIGNAL PROCESSING DEVICE AND ELECTRONIC DEVICE - A signal processing device that can reduce the number of signal lines for outputting sensor signals includes a sensor interface unit that acquires, from a photosensor having multiple pixels, data of the pixels; a coordinate processing unit that generates position data indicating a detected position of a detection target from the data of the pixels; a video processing unit that generates image data in a predetermined format from the data of the pixels; a test mode control unit or switching control unit that switches which of the coordinate processing unit and the video processing unit is to perform processing on the data of the pixels; and a user interface unit that converts the position data generated by the coordinate processing unit and the image data generated by the video processing unit into a serial signal and outputs the serial signal to a serial bus.05-10-2012
20120113058INFORMATION DEVICE - Problems exist in areas such as image visibility, endurance of the device, precision, miniaturization, and electric power consumption in an information device having a conventional resistive film method or optical method pen input function. Both EL elements and photoelectric conversion elements are arranged in each pixel of a display device in an information device of the present invention having a pen input function. Information input is performed by the input of light to the photoelectric conversion elements in accordance with a pen that reflects light by a pen tip. An information device with a pen input function, capable of displaying a clear image without loss of brightness in the displayed image, having superior endurance, capable of being miniaturized, and having good precision can thus be obtained.05-10-2012
20120113057COORDINATE INPUT APPARATUS, CONTROL METHOD THEREFOR AND PROGRAM - A coordinate input apparatus includes retroreflecting units at two opposite sides of a rectangular-shaped coordinate input effective region, and a plurality of sensor units provided at the two sides. Each of the sensor units includes a light receiving unit for receiving light that reaches the light receiving unit, a light projecting unit for projecting light toward a retroreflecting unit provided at one of the two sides, which opposes the light projecting unit, and a surface light emitting unit for emitting even diffused light from a band-shaped surface. Each of the sensor units simultaneously detects, by the light receiving unit, light that has been projected by the light projecting unit and reflected back by the retroreflecting unit at the side opposing the light projecting unit, and light that has been emitted by surface light emitting units of a plurality of sensor units at the side opposing the light projecting unit.05-10-2012
20120113056INPUT DEVICE, INPUT METHOD, AND COMPUTER READABLE STORAGE DEVICE - An input device, method and computer program storage device cooperate to assist in controlling an input device. In the device, a detector detects a presence of an object that is within a first predetermined distance of a detection surface. The detector also detects when the object is within a second predetermined distance of the detection surface. A controller executes a first processing operation when the detector detects the object being within the first predetermined distance, and subsequently executes a related second processing operation when the detector detects the object being within the second predetermined distance.05-10-2012
20120113055SENSING DEVICE HAVING PHOTO SENSING ELEMENT ALTERNATELY OPERATED IN DIFFERENT BIASED STATES AND RELATED TOUCH-CONTROLLED DISPLAY DEVICE - The present invention provides a sensing device and a display device utilizing the sensing device. A photo sensing element of the sensing device is alternatively operated in a biased state and a reverse-biased state to prevent the stress issue. Furthermore, the sensing device improves the S/N ratio by generating an output signal through an active component. The display device including the sensing device prevents the stress issue and improves the S/N ratio by using specific driving signals.05-10-2012
20120235956METHOD FOR CALIBRATING ACCURACY OF OPTICAL TOUCH MONITOR - A method for calibrating the accuracy of an optical touch monitor is provided. The optical touch monitor has a first lens and a second lens disposed at the same side of the optical touch monitor and faced towards the other side thereof. In the present method, one of a plurality of control points (CPs) on the optical touch monitor is touched by using a touch object. A first position and a second position of the touch object in images captured by the first lens and the second lens are substituted into a non-linear transformation function to calculate a weight matrix for system transformation. When the touch object touches a touch point on the optical touch monitor, a touch position of the touch object on the optical touch monitor is detected and transformed into screen coordinates of the optical touch monitor by using the weight matrix and the non-linear transformation function.09-20-2012
20120235955OPTICAL NAVIGATION MODULE - An optical navigation module for receiving control from an object is provided. The optical navigation module includes a module surface above which the object is disposed; a light source located under the module surface and configured to project a first cone of light to the object along a first optical axis through a first optical construction; and a light sensor located under the module surface and configured to detect a second cone of light that is resulted from the first cone of light being reflected by the object along a second optical axis through a second optical construction, and thereby to collect a spatial intensity profile of the reflected light. The intersection of the first optical axis and the second optical axis is below the module surface.09-20-2012
20130162598VIRTUAL PROJECTING INPUT SYSTEM AND INPUT DETECTING METHOD THEREOF - An input detecting method used for a virtual projecting input system includes: emitting an image light beam through a reflecting mirror, and the image light beam forming a projecting point on a projecting plane; enabling the reflecting mirror to swing, so as to enable the image light beam to swing, and the projecting point scanning back and forth on the projecting plane, and generating an input image; detecting a swing frequency of the reflecting mirror, and generating a frequency signal; judging whether an input action occurs, and if yes, generating a detecting signal; and analyzing a phase difference between the frequency signal and the detecting signal, and calculating an input position of the input action according to the phase difference.06-27-2013
20130162599TOUCHSCREEN AND ELECTRONIC DEVICE USING SAME - A touchscreen for an electronic device includes a first substrate, a second substrate opposite to the first substrate, and photosensors disposed on the first substrate. The second substrate includes a first surface and a second surface opposite to the first surface. When a first light at a first wavelength enters the second substrate via the second surface, the second substrate emits the first light at the first wavelength from the first surface. The second substrate further totally reflects the first light at a second wavelength. The plurality of photosensors detect the first light at the first wavelength penetrating through the second substrate, and output corresponding detecting signals.06-27-2013
20120268426APPARATUS TO SENSE TOUCHING AND PROXIMATE OBJECTS - A sensing apparatus may emit light, radiated from a light source, to an upper part and may preserve light in an internal part, based on a total internal emission angle of the light. Also, the sensing apparatus may project the light radiated to the upper part, and the light preserved in the internal part, towards at least one of a touching object and the proximate object.10-25-2012
20110043486Liquid crystal display device, black matrix substrate and color filter substrate - A liquid crystal display device includes a first substrate, a second substrate located opposite the first substrate via a liquid crystal, a blue display element, a green display element, a red display element, a short-wavelength optical sensor, a red optical sensor, and an infrared optical sensor formed on a liquid crystal side surface of the first substrate, and a color filter formed between the first substrate and the second substrate and includes a blue filter, a green filter, a first red filter, a short-wavelength transmission filter, a second red filter, and an infrared transmission filter corresponding to the blue display element, the green display element, the red display element, the short-wavelength optical sensor, the red optical sensor, and the infrared optical sensor, respectively.02-24-2011
20110032215INTERACTIVE INPUT SYSTEM AND COMPONENTS THEREFOR - A display panel for an interactive input system comprises first and second touch surfaces on opposite major sides thereof and a touch detection arrangement to detect touch input on one or both of the touch surfaces.02-10-2011
20110032213Multimode Apparatus and Method for Making Same - An apparatus operable in touch-input mode and scanning mode uses a light guide and a camera to look through a slanted facet at one corner of the light guide. The light guide has an upper surface for placing a touch object or an item for scanning. An angular sensitive grating is located on lower surface having fringes such that when a light beam directed from a location P on upper surface toward lower surface at a predefined direction, it is diffracted by the grating and guided toward the slanted facet. The diffracted beam exits the slanted facet at an exiting angle indicative of the location P. When an object or item is placed on upper surface, it causes changes in exit beam intensity. From exiting angles and intensity changes, a camera is able to locate touch objects or to acquire an image of the scanned item.02-10-2011
20090033637LIQUID MULTI-TOUCH SENSOR AND DISPLAY DEVICE - High-resolution multi-touch sensor and display device where the interaction medium is liquid, enabling more realistic tactile experience for simulations of synthetic wet environments. Based on frustrated total internal reflection, the device employs liquid within a tank as the optical waveguide that receives light, such as infrared light, that undergoes total internal reflection and an imaging camera that detects light that escapes from the tank caused by frustration of the total internal reflection due to contact of the water by a user.02-05-2009
20110102377OPTICAL TOUCH APPARATUS AND DRIVING METHOD - An optical touch apparatus including a first light emitting device, a second light emitting device, a third light emitting device, a fourth light emitting device, a first image detector, a second image detector, and a control unit is provided. The control unit controls the average brightness of the third light emitting device less than each of the average brightness of the second light emitting device and the fourth light emitting device when the control unit controls the first image detector to detect an image. The control unit controls the average brightness of the second light emitting device less than each of the average brightness of the first light emitting device and the third light emitting device when the control unit controls the second image detector to detect an image. A driving method is also provided.05-05-2011
20120169668DISPLAY - A display is provided. The display includes a frame, a display module, and a bendable cover. The frame includes a bottom surface and a lateral surface, the display module is disposed on the frame, and the bendable cover has a surface layer and an adhesive layer, the adhesive layer is located on the surface layer, a part of the surface layer is adhered to the display module through the adhesive layer, another part of the surface layer is attached to the lateral surface of the frame and adhered to the bottom surface of the frame through the adhesive layer.07-05-2012
20120092301TOUCH SCREEN SYSTEM AND MANUFACTURING METHOD THEREOF - There is provided a touch screen system including: a sensor module including a light emitting unit configured to generate a light signal and a photo detection sensor configured to receive the light signal; a display panel including the sensor module; a front case including a reflection area configured to reflect the light signal generated from the light emitting unit to the photo detection sensor; and a back case connected to the front case with the display panel positioned therebetween. The front case is fixed and connected to the back case and the reflection area is placed at a predetermined position on the display panel.04-19-2012
20100238138OPTICAL TOUCH SCREEN SYSTEMS USING REFLECTED LIGHT - A touch screen system, including a near-infrared transparent screen including a plurality of reflective elements embedded therein, a circuit board including circuitry for controlled selective activation of electronic components connected thereto, at least one light source connected to the circuit board, for emitting light, and at least one light detector connected to the circuit board, for detecting light emitted by the at least one light source and reflected by the reflective elements.09-23-2010
20120032926INPUT DEVICE - An input device includes a transparent display panel configured to display a graphical interface, an input plate disposed above the display panel and composed of a material that transmits the graphical interface and allows infrared light to propagate through the input plate, an infrared-emitting unit disposed in contact with the input plate and configured to emit the infrared light into the input plate via a contact surface of the input plate, and an infrared detection unit disposed below the input plate and configured to detect diffused light of the infrared light which is generated at the input plate when the input plate is touched.02-09-2012
20120032923INFRARED CONTROLLING DEVICE - An IR controlling device includes a display panel, a number of IR emitters, a number of IR receivers, and a receiving controller. The IR emitters and the IR receivers are staggered under the display panel, and facing the display panel. The IR emitters are to emit IR beams in sequence, and the IR receivers are to receive the IR beams reflected by an external object. The receiving controller generates a plurality of response signals corresponding to the IR receivers. An IR processing unit receives the response signals, and determines a virtual position of the external object on the display panel. A controlling unit outputs a control signal and executes a corresponding function. A display processing unit receives the control signal and updates the content on the display panel.02-09-2012
20120032921OPTICAL TOUCH SYSTEM - An optical touch system includes a first light source, a second light source, a sensing module and a processing module. The lighting timing of the second light source differs with the lighting timing of the first light source by a phase. The sensing module is for capturing a sensing image related to a touch point on a panel, and receiving a first bounce light of the touch point corresponding to the first light source and a second bounce light of the touch point corresponding to the second light source. The processing module is for obtaining angle information according to the sensing image, calculating a phase difference between the first bounce light and the second bounce light to obtain distance information, and determining a coordinate corresponding to the touch point according to the angle information and the distance information.02-09-2012
20120032920Optical plate structure for a touch panel, and touch display panel and touch liquid crystal display panel including the same - An optical plate structure for a touch panel includes an optical plate, at least a light source, and at least an optical camera. A light-emitting surface of the optical plate includes a plurality of micro-structure. The light source is disposed beside a vertical side of the optical plate and emits a first light entering the optical plate. The optical plate guides the first light and emits a second light from the light-emitting surface. The optical camera is disposed beside the optical plate or in a corner of the optical plate and above the light-emitting surface, for detecting a third light incident on the light camera. The second light is reflected by an object touching the optical plate to become the third light. The optical plate structure for a touch panel may be utilized in a touch display panel or a touch liquid crystal display panel.02-09-2012
20110279411OPTICAL WAVEGUIDE AND OPTICAL TOUCH PANEL - In an optical touch panel 11-17-2011
20110279412SCANNING METHOD FOR DETERMINING A TOUCH POSITION OF A TOUCH INPUT APPARATUS - A scanning method for determining the touch position of a touch input apparatus is disclosed. First of all, a first exposure process on light sensors of the touch input apparatus by light emitting device of the touch input apparatus is performed. Then the light sensors are scanned. A light sensor generating a signal with a maximum value is located. A region of partial scan of the light sensors is determined according to the position of the light sensor generating the signal with the maximum value. A second exposure process is performed on the light sensors. Then the light sensors within the region of partial scan are scanned. A light sensor generating a signal with a maximum value within the region of partial scan is located and a next region of partial scan is determined. The maximum value of the signal is calculated and the maximum value of the signal is compared to a predetermined value to determine whether the maximum value is higher than the predetermined value.11-17-2011
20130162601OPTICAL TOUCH SYSTEM - There is provided an optical touch system including at least one lighting unit, at least one image sensing module and a processing unit. The image sensing module is configured to capture light of a pointer and the lighting unit to generate a two-dimensional image and to convert entire of the two-dimensional image to a one-dimensional feature. The processing unit positions the pointer according to the one-dimensional feature.06-27-2013
20130162597OPTICAL TOUCH CONTROL MODULE - An optical touch control module for providing at least one sensing area includes: a light-reflecting unit, a first light-sensing unit and a second light-sensing unit. The light-reflecting unit includes a light-reflecting element for partially surrounding the at least one sensing area. The first light-sensing unit is disposed beside one edge of the at least one sensing area and adjacent to one end of the light-reflecting element. The first light-sensing unit includes at least one first light-emitting element, at least one first light-detecting element, and at least one first oscillating reflecting element oscillating depending on time. The second light-sensing unit is disposed beside another edge of the at least one sensing area and adjacent to another end of the light-reflecting element. The second light-sensing unit includes at least one second light-emitting element, at least one second light-detecting element, and at least one lens element.06-27-2013
20110279413OPTICAL TOUCH DISPLAY APPARATUS AND OPTICAL OPERATION APPARATUS - An optical touch display apparatus includes a light-transmitting display panel, a backlight module, a visible light source, an invisible light source, an image sensing apparatus and a processing circuit. The light-transmitting display panel has a first surface and a second surface opposite to each other. The first surface has a display area. The backlight module is disposed on the second surface. The image sensing apparatus is configured to sense an image above the display area. When a pointer is located in the display area and reflects invisible light which passes through the display area so that the image sensing apparatus senses the invisible light reflected by the pointer, the processing circuit calculates the position of the pointer related to the display area according to the image sensed by the image sensing apparatus. In addition, an optical operation apparatus is also provided.11-17-2011
20100188370CAMERA-BASED TOUCH SYSTEM - A camera-based touch system (07-29-2010
20100007633OPTICAL WAVEGUIDE FOR TOUCH PANEL AND TOUCH PANEL USING THE SAME - An optical waveguide for a touch panel which eliminates the need for alignment between the optical waveguide and a lens device, and a touch panel using the same. An end portion of a light-emitting core for emitting light beams and an end portion of a light-receiving core for receiving emitted light beams are formed as first and third lens portions so as to protrude from edge portions of an over cladding layer and to be exposed to outside air. The first and third lens portions have lens surfaces which bulge outwardly. The over cladding layer includes second and fourth lens portions formed as extensions of the over cladding layer and corresponding to the first and third lens portions, with the second and fourth lens portions spaced apart from the lens surfaces of the first and third lens portions. The second and fourth lens portions have lens surfaces which bulge outwardly.01-14-2010
20100289774Capacitive Touch Sensing Structure and Sensing Method Thereof - A capacitive touch sensing structure includes: a substrate; a plurality of first electrode groups arranged from a first position towards a second position in a first direction, wherein each of the first electrode groups includes a plurality of first electrodes extended from a third position towards a fourth position in a second direction; a plurality of first conducting wires each having a plurality of contacts respectively coupled to the first electrodes of each of the first electrode groups; a plurality of second electrode groups arranged from the first position towards the second position in the first direction, wherein each of the second electrode groups includes a plurality of second electrodes extended from the fourth position towards the third position in the second direction and respectively staggering with the first electrode groups; and a plurality of second conducting wires each having a plurality of contacts respectively coupled to the electrodes of each of the second electrode groups.11-18-2010
20130009912METHOD FOR RECOGNIZING TOUCH AND DISPLAY APPARATUS THEREOF - A method and system for recognizing a touch of a display system including a plurality of touch screens is provided. The method for recognizing a touch of a display system including a plurality of touch screens includes: operating each of the plurality of touch screens according to an individually set pulse signal; in response to a point on a touch screen of the plurality of touch screens being touched by a digital pen, detecting a pulse signal of the touched touch screen by the digital pen; determining coordinate information of the touched point by the digital pen; and recognizing the touch screen among the plurality of touch screens and coordinate information of the touched point according to at least one characteristic of the detected pulse signal.01-10-2013
20100328270OBJECT DETECTION CALIBRATION SYSTEM OF AN OPTICAL TOUCH SCREEN AND METHOD THEREOF - A first image sensor captures a first image of a panel of a touch screen. The first image includes a first object, a second object, a first set of reference marks, a second set of reference marks, and a first boundary mark. The touch screen establishes relationships of relative positions among the first image sensor, the first object, the second object, and the reference marks according to positions of the first object, the second object, and the reference marks in the first image. And the touch screen calculates a relative position between the first image sensor and the panel according to the relationships of relative positions among the first image sensor, the first object, the second object, and the reference marks and relative positions among the first object, the second object, and the panel.12-30-2010
20090066671Touch screen using infrared camera hardly affected by external distrubance light - A touch screen using infrared cameras hardly affected by external disturbance light includes an infrared radiation base having a plurality of infrared emitting elements and the infrared cameras, thereby preventing malfunction resulting from the external disturbance light. The touch screen includes a body having a screen part to which an image is output, an infrared radiation base having a plurality of infrared emitting elements and disposed around the screen part in transverse and longitudinal directions, and infrared cameras receiving the infrared light emitted from the infrared emitting elements of the infrared radiation base and detecting the position of an object touched on the screen part according to whether or not the infrared light emitted from each infrared emitting element is received.03-12-2009
20100295820LIGHT-INDUCED SHAPE-MEMORY POLYMER DISPLAY SCREEN - A light-induced shape-memory polymer display screen is provided herein. One example display device includes a display screen having a topography-changing layer including a light-induced shape-memory polymer. The display device further includes an imaging engine configured to project visible light onto the display screen, where the visible light may be modulated at a pixel level to form a display image thereon. The display device further includes a topography-changing engine configured to project agitation light of an ultraviolet band towards the display screen, where the agitation light is modulated at a pixel level to selectively change a topography of the topography-changing layer.11-25-2010
20110298756TOUCH PANEL INTEGRATED DISPLAY DEVICE - A touch panel integrated display device which can reduce an entire thickness and weight and which can prevent display quality deterioration is discussed. The touch panel integrated display device includes a display panel comprising a plurality of pixels, to display an image; a touch panel formed on an top peripheral area of the display panel, to sense a touch generated on the display panel.12-08-2011
20110298751Multi-User Interactive Coffee Table - My invention is a Multi-User Interactive Coffee Table, which allows multiple users to interact with an LCD screen at the same time, using their fingers to manipulate virtual objects. In addition to multi user, the table supports object recognition, recognizing objects placed on the table and interacting with them. The table is a self-contained unit that combines hardware and software, including a multi user monitor and computer. Going far beyond the standard single-touch and initial attempts at multi-user interactivity, the Multi-User Interactive Coffee Table allows up to 20 users to interact separately and at the same time with the table. In addition, the table supports object recognition, interacting at the same time with different objects placed at separate parts of the table, and is made using LCD screens and LED lights which greatly increase the life of the table and eliminate the need for difficult bulb changes.12-08-2011
20120182263DETERMINE THE CHARACTERISTICS OF AN INPUT RELATIVE TO A PROJECTED IMAGE - Embodiments disclosed herein relate to an input relative to an image projected onto a projection surface. In one embodiment, a processor may determine the characteristics of an input relative to an image projected onto a projection surface. The input characteristics may be determined based on information from an optical sensor.07-19-2012
20110069037OPTICAL TOUCH SYSTEM AND METHOD - In an optical touch system and method, at least one optical reflector and a plurality of image capturing modules are arranged on an outer periphery of a coordinate detection zone. Each of the image capturing modules has a corresponding first light-emitting module. And, a second light-emitting module is further provided on the outer periphery of the coordinate detection zone. The first light-emitting modules are controlled to emit light at a first time point while the image acquiring modules are controlled to capture a first image respectively; and the second light-emitting module is controlled to emit light at a second time point while one of the image capturing modules is controlled to capture at least one second image. The optical touch system computes coordinates of at least one object based on positions of the at least one object in each of the first and the at least one second image.03-24-2011
20110050644TOUCH SYSTEM AND POINTER COORDINATE DETECTION METHOD THEREFOR - A pointer coordinate detection method for a touch system includes the steps of: capturing an image window looking across a plate surface with at least one image sensor; identifying a height coordinate of a pointer relative to the touch system according to a variation of each column of pixels in the image window; and calculating a plane coordinate of the pointer relative to the touch system according to an image position of the pointer in the image window. The present invention further provides a touch system.03-03-2011
20120001871TOUCHING DEVICE, LASER SOURCE MODULE, AND LASER SOURCE STRUCTURE THEREOF - A touch device, a laser source module, and a laser source structure are disclosed in this invention. The touch device includes a touching area having a first edge and a second edge, the first edge is adjacent to the second edge; two reflective lens arrays and two laser source modules which are all disposed at the first edge and the second edge respectively, wherein each laser source module includes a laser diode and a diffractive optical element assembled in front of the laser diode for separating a laser beam projected from the laser diode to a plurality of laser beams with equal magnitude, the laser beams are distributed in a parallel arrangement over the touching area by the reflective lens array; and two receiving devices disposed at the corresponding edges of the first edge and the second edge respectively. The receiving device includes a plurality of sensing units, wherein each sensing unit receives one of the laser beams respectively, and each sensing unit outputs one digital signal.01-05-2012
20110050639APPARATUS, METHOD, AND SYSTEM FOR TOUCH AND GESTURE DETECTION - An apparatus, method and system are disclosed for touch and gesture detection. A light source array comprises a plurality of light sources. Each light source of the light source array transmits a light beam across a face of a display in response to being activated. A light sensor array comprises a plurality of light sensors. Each light sensor of the light sensor array detects an intensity of each light beam transmitted across the face of the display in response to being activated. A controller concurrently activates each light source of the light source array with each light sensor of the light sensor array as a source/sensor pair during a detection cycle while other light sources of the light source array and other light sensors of the light sensor array are inactive. The controller further determines a location of a pointer relative to the display from a pattern of light beam intensities for each source/sensor pair.03-03-2011
20120105376Method for Auto Angle Setting of Infrared Sensor Module and Display Device Having the Same Applied Thereto - The present invention relates to a method for auto angle setting of an infrared sensor module having a light emitting unit and a sensor unit arranged at least two corners of a display panel, includes the steps of selecting a peak detection mode or a slope detection mode; in the peak detection mode, setting a pixel of in the sensor unit which senses a light quantity as a reference point corresponding to a corner other infrared sensor module is arranged at; in the slope detection mode, analyzing the light quantities of a start pixel block and an end pixel block in the sensor unit and setting a pixel which forms a greatest slope as a start point or an end point; and setting an effective angle of view in the sensor unit with reference to the reference point, the start point, and the end point.05-03-2012
20120105374Touch device and touch method - A touch device to sense and compute the coordinate of a touch object is provided. The touch device comprises a panel, a light-emitting element, an image sensor, a reflective strip and a processing unit. The panel has a sensing area surrounded by first to fourth boundaries where the first and the third boundaries define an x direction and the other two boundaries defines y direction. The light-emitting element and the image sensor are located on the first boundary with a specific distance therebetween. The reflective strip is located on the second to fourth boundaries. When the touch object touches the sensing area, a first and a second light path from the light-emitting element to the image sensor are blocked to form a real and a virtual image such that the processing unit computes the coordinate of the touch object according to the real and the virtual images. A touch method is disclosed herein as well.05-03-2012
20110285669Electronic Devices Including Interactive Displays Implemented Using Cameras and Related Methods and Computer Program Products - An electronic device is provided including a housing; an interactive display connected to the housing; a frame associated with the interactive display; at least one camera coupled to the interactive display and frame; and a position determination circuit coupled to the camera and the interactive display. The position determination circuit is configured to determine a position of an object in proximity to the interactive display based on images captured by the at least one camera.11-24-2011
20120098797Display device using infrared sensor module and method of driving the same - A display device using infrared sensor modules that is capable of reducing power consumption and extending durability of infrared light sources and sensors and a method of driving the same are disclosed. The display device includes a display panel to display images, a plurality of infrared sensor modules to optically detect a touched position on the display panel, an infrared sensor module controller to sequentially drive the infrared sensor modules and to switch the infrared sensor modules to a low-power mode when a touch operation has not been performed within a predetermined period of time or when the display panel is in a power-saving mode, and a system to provide a state of the display panel to the infrared sensor module controller.04-26-2012
20120098796OPTICAL TOUCH MODULE AND DATA LOADING METHOD THEREOF - An optical touch module and a data loading method thereof are provided. The optical touch module includes a first system-on-chip (SoC), a second SoC and a storage element. The first and the second SoCs are electrically connected to each other and disposed around a touch region of a substrate. The first and the second SoCs each include an image sensor for sensing an image of the touch region. The storage element is electrically connected to the first SoC. The first SoC reads first data and second data stored in the storage element and transmits the second data to the second SoC. The first and the second SoCs respectively process the image of the touch region according to the first data and the second data.04-26-2012
20120098795OPTICAL TOUCH SCREEN SYSTEM AND SENSING METHOD FOR THE SAME - An optical touch screen system includes a touch screen, an image-sensing device, and a processing device. The image-sensing device generates a plurality of light-shielding information of an object at a plurality of time points. The processing device coupled to the image-sensing device includes a computing unit calculating a projected size difference value according to the plurality of light-shielding information, wherein the projected size difference value is a difference value between the projected sizes of the object on the touch screen at two different time points.04-26-2012
20120098793ON-SCREEN-DISPLAY MODULE, DISPLAY DEVICE, AND ELECTRONIC DEVICE USING THE SAME - An on-screen-display module includes an optical signal processing unit and a control unit. The optical signal processing unit receives an optical signal sensed by an image sensor and outputs a touch signal. The control unit is electrically connected to the optical signal processing unit, and adjusts a display panel to execute a corresponding display effect according to the touch signal. By applying the on-screen-display module to a display device or an electronic device, the display effect of the display panel can be directly modulated through the control unit when the host is not powered on, and advantages of further saving system energy and being convenient for a user are achieved.04-26-2012
20120098792OPTICAL FINGER NAVIGATION DEVICE - An optical finger navigation (OFN) device for use in handheld portable devices is presented. The OFN device may include a light source, a sensor, a lens holder integrated with a light guide system and a molded lead frame. The lens holder may include a lens receiving region for receiving the lens, a light guide system for directing light emitted by the light source towards the navigation surface. The light guide system may include a slanted wall that may be coated with a light reflective material.04-26-2012
20110298753OPTICAL TOUCH PANEL AND TOUCH DISPLAY PANEL AND TOUCH INPUT METHOD THEREOF - An optical touch panel includes a substrate, a single planar light generator, at least a retro reflector device, and a single photo sensor array. The substrate has a surface. The single planar light generator is disposed outside the surface of the substrate for generating a planar light, where the illuminating range of the planar light covers the range of the surface of the substrate. The retro reflector device is disposed on a side of the substrate for reflecting the planar light. The single photo sensor array is disposed outside the surface of the substrate for sensing the reflected planar light and generating reflected light distribution information.12-08-2011
20110298752ELECTRONIC DEVICE WITH INFRARED TOUCH INPUT FUNCTION - An electronic device includes a display panel and an infrared touch module. The infrared touch module includes a circuit board mounted parallelly under the display panel. An array of infrared emitters and receivers arranged along one side of each pair of adjacent sides of the circuit board, and facing a corresponding one of the array of light emitters on the opposite side. A light guide is mounted on each infrared emitter and each infrared receiver, and the light guide one each infrared emitter is operable to guide the light emitted from the light emitter to the corresponding infrared receiver via the light guide mounted thereon.12-08-2011
20100259506TOUCH SCREEN APPARATUS WITH REFLECTOR - An exemplary touch screen apparatus comprises a display screen, a first reflector, a first infrared light source, and an infrared light receiving unit. The display screen includes a display area. The first reflector is disposed outside said display screen and surrounds the display area. The first reflector has a first focal point, and the first infrared light source is disposed on the first focal point. The infrared light receiving unit is capable of receiving the infrared light from the display screen.10-14-2010
20110291992Optical Sensor Array - An optical sensor array comprises a photo-sensitive area formed by an array of chiplets having individual light-sensitive elements, each element configured to produce a signal or signals in response to incident light. The displacement of a chiplet from a predetermined position is derivable from the output signal or signals of the element or elements associated with the chiplet. The arrangement provides a method of measuring the displacement of at least one chiplet in an active display.12-01-2011
20110291989System and Method for Contactless Touch Screen - A touch screen that employs a lens-less linear IR sensor array and an IR light source from a single location at the periphery of the screen to illuminate one or more objects proximate to the screen surface and detect light reflected from such objects. The sensor array is paired with a proximal grid-like barrier/reflector to create Moiré patterns on the sensor array. Digital signal processing converts such patterns into discrete Fourier transforms. The peaks of the lower order discrete Fourier spectrum as well as the complex phases of the lower order peaks can be used to determine the locations of the objects proximal to the screen accurately. A small number of pressure or surface acoustic sensors at the periphery of the screen are utilized to improve positioning reliability by providing redundant positioning information and registering physical contacts with the screen.12-01-2011
20110291988Method and system for recognition of user gesture interaction with passive surface video displays - A system recognizes user-object gesture interactions with the surface of a monitor display, with hover space defined spaced-apart from the display surface, or in virtual scroll regions defined on the periphery of the monitor display. The system recognizes user-object interactions, e.g., gestures, and can affect what is displayed commensurately. The system includes at least a first time-of-flight (TOF) system and at least one of a second TOF, a two-dimensional camera, and a mirror, each TOF system processing at least one of z-depth data and A-brightness data. User-object interactions, e.g., touching(s) of the display surface, location(s) in a hover region, or location(s) in a virtual scroll region, are recognized passively in that the user-object need not have capacitance, resistance, exert force, or deform during gesture interaction. The system may be attached retroactively to the monitor, which may be a large (>22 cm) monitor, or a small cell phone sized monitor.12-01-2011
20090273582TOUCH INPUT PROGRAM AND TOUCH INPUT DEVICE - A game apparatus includes a CPU core. In response to a setting of a reverse input mode, the CPU core reverses vertically and horizontally BG/OBJ data corresponding to a question, and displays on an LCD an image based on the reversed BG/OBJ data. When a handwriting input operation associated with the image is accepted by a touch panel, the CPU core displays on the LCD an image based on handwriting input data corresponding to the accepted handwriting input operation.11-05-2009
20110291991PORTABLE OPTICAL TOUCH SYSTEM - There is provided a portable optical touch system including a first image sensing module, a second image sensing module, a connecting device, a communication interface and a processing circuit. The two image sensing modules have partially overlapped field of views and the partially overlapped field of views is for defining a touch region. The connecting device is configured to adjust or fix a distance between the first and second image sensing modules. When an object is in the touch region, the processing circuit calculates a position of the object according to images of the object acquired by the two image sensing modules and outputs information of the position of the object through the communication interface.12-01-2011
20110291993TOUCH PANEL, LIQUID CRYSTAL PANEL, LIQUID CRYSTAL DISPLAY DEVICE, AND TOUCH PANEL-INTEGRATED LIQUID CRYSTAL DISPLAY DEVICE - A touch panel includes: an infrared light transmitting material through which infrared light is transmitted and which has a surface as a touch surface (12-01-2011
20110291990PROJECTION DISPLAY SYSTEM AND ATTACHING DEVICE - A projection display system includes: an image projection device projecting an image on a projection surface; an optical detecting device; and an attaching device, wherein the optical detecting device includes an irradiating section emitting an irradiation light toward a detection region which is set along the projection surface, a light receiving section receiving a reflected light generated as a result of the irradiation light being reflected from the object, and a detecting section detecting position information of the object based on the result of the light received by the light receiving section, and the attaching device includes a first attaching section attached to a support supporting the attaching device, a second attaching section attached to the image projection device, and a third attaching section attached to the optical detecting device.12-01-2011
20100090984Liquid Crystal Display Having Touch Screen Function Using Photoconductor - Provided is a liquid crystal display (LCD) having a touch screen function using a photoconductor, which includes first and second substrates and a liquid crystal layer filled therebetween. The first substrate includes a touch sensing layer formed under a substrate and sensing a position by variation in current or voltage due to change in characteristics of the photoconductor in response to light supplied from outside, a light shielding layer formed under the touch sensing layer and preventing leakage of light, and a color filter layer including red (R), green (G) and blue (B) color filter patterns to express a color between the light shielding layer, thereby effectively finding a touch position according to a current variation depending on a change in characteristics of the photoconductor by the light supplied from outside.04-15-2010
20100090985TOUCH SCREEN SIGNAL PROCESSING - A touch screen which uses light sources at one or more edges of the screen which directs light across the surface of the screen and at least two cameras having electronic outputs located at the periphery of the screen to receive light from said light sources. A processor receives the outputs of said cameras and employs triangulation techniques to determine the location of an object proximate to said screen. Detecting the presence of an object includes detecting at the cameras the presence or absence of direct light due to the object, using a screen surface as a mirror and detecting at the cameras the presence or absence of reflected light due to an object. The light sources may be modulated to provide a frequency band in the output of the cameras.04-15-2010
20100090986MULTI-TOUCH POSITIONING METHOD AND MULTI-TOUCH SCREEN - The present invention relates to a multi-touch positioning method and a multi-touch screen. The multi-touch positioning method comprising: emitting, by a first infrared ray generator set at a first angle of a display panel, infrared rays at a first wavelength; emitting, by a second infrared ray generator set at a second angle, infrared rays at a second wavelength; receiving the infrared rays of the first wavelength and generating a first infrared ray image by a first infrared ray image sensor set at an opposite angle of the first angle; receiving the infrared rays of the second wavelength and generating a second infrared ray image by a second infrared ray image sensor set at an opposite angle of the second angle; and performing processings for the first infrared ray image and the second infrared ray image to determine at least one touch point.04-15-2010
20090273580SENSING CIRCUIT, METHOD OF DRIVING SENSING CIRCUIT, DISPLAY DEVICE, METHOD OF DRIVING DISPLAY DEVICE, AND ELECTRONIC APPARATUS - A display device includes: a first substrate and a second substrate that face each other; electro-optical elements that are interposed between the first substrate and the second substrate; light detecting units that are provided between the first substrate and the second substrate and output first detection signals having levels corresponding to the amount of incident light; and capacitance detecting units that include capacitive elements each having a first electrode and a second electrode provided between the first substrate and the second substrate, output second detection signals having levels corresponding to the capacitance values of the capacitive elements, and are provided separately from the light detecting units.11-05-2009
20110216042INTEGRATED TOUCH-SENSING DISPLAY APPARATUS AND METHOD OF OPERATING THE SAME - An integrated touch-sensing display is operated to detect the location of one or more objects on a touch surface. The integrated touch-sensing display defines a display area. A light guide (09-08-2011
20110216040OPTICAL TOUCH APPARATUS AND OPERATING METHOD THEREOF - An optical touch apparatus includes a light source emitting module, an optical module, a light sensing module, and a processing module. The optical module and the light sensing module are set on a first side and a second side of a surface of the optical touch apparatus. The light source emitting module sequentially emits a first light source and a second light source. A plurality of scanning lights of the second light source is uniformly distributed above the surface. The optical module receives the first light source and uniformly emits a plurality of lights. The light sensing module generates a first sensing result and a second sensing result based on the conditions of receiving the lights and scanning lights respectively. The processing module determines at least one touch point location corresponding to at least one object on the surface based on the first sensing result and the second sensing result.09-08-2011
20090284497Optical Operating Apparatus - An optical operating apparatus includes a display panel, a transparent supporting plate, a deformable unit, a light source, an image sensing module, a function selecting module and a processing module. The deformable unit is disposed between the transparent supporting plate and the display panel. The deformable unit has a pattern configuration. The deformable unit deforms as applying an external force on the display panel and restores after the external force is removed. The light source provides a light beam to the deformable unit, and a visual field of the image sensing module covers the whole deformable unit. The function selecting module is disposed beside the display panel and has a plurality of function selecting buttons for selecting a predetermined function. The processing module is electrically connected with the display panel, the function selecting module, the image sensing module and the light source. The processing module is configured to control the display panel to display a predetermined picture according to a corresponding predetermined function.11-19-2009
20100134443Display device - A display device is disclosed. The display device includes a liquid crystal panel, a backlight, multiple light sensors and a touch location detection section. The backlight is controlled to be in an ON state and an OFF state in a predetermined duty ratio. Each light sensor detects intensity of ambient light incident on the liquid crystal panel, including a first intensity detected during a period of the ON state of the backlight and a second intensity detected during a period of the OFF state of the backlight. The touch location detection section detects a touch location on the liquid crystal panel based on location of one or ones of the multiple light sensors, the one or ones of the multiple light sensors being detecting the first and second intensities whose difference value exceeds a determination threshold.06-03-2010
20110261013TOUCH SCREEN SYSTEM BASED ON IMAGE RECOGNITION - A touch screen system includes a touch screen corresponding to a Descartes coordinate system XOY, a first image capturing unit, a second capturing unit, and a processing unit. The first image capturing unit and the second capturing unit are arranged at the periphery of the touch screen and are substantially perpendicular to each other. Both the two image capturing units include a camera and a housing, the camera is housed in the housing to take images, an optical axis of the lens of each camera is perpendicular to X or Y axis of the system XOY respectively for acquiring images including one touch point. The processing unit identifies a touched point on the touch screen and determines X and Y coordinates of the touched point in the system XOY and executing a function corresponding to the X and Y coordinates of the touched point.10-27-2011
20110261012INPUT DEVICE AND INFORMATION PROCESSING SYSTEM - A game system as an information processing system includes a game apparatus and a controller, and the controller is attached with an attachment device. The controller images an image including infrared rays output from markers arranged on a monitor through a half mirror integrated in the attachment device. Furthermore, the controller images an image including an infrared ray from a pen input device reflected by the half mirror via a touch panel. In the former, the controller functions as an input device for a direct coordinate input, and in the latter, the controller functions as a pen tablet.10-27-2011
20090189878LIGHT-BASED TOUCH SCREEN - A light-based touch screen, including a housing for a display screen, a plurality of infra-red light emitting diodes (LEDs), fastened on the housing, for generating light beams, at least one LED selector, fastened on the housing and connected with the plurality of LEDs, for controllably selecting and deselecting one or more of the plurality of LEDs, a plurality of photodiode (PD) receivers, fastened on the housing, for measuring light intensity, at least one PD selector, fastened on the housing and connected with the plurality of PD receivers, for controllably selecting and deselecting one or more of the plurality of PD receivers, an optical assembly, fastened on the housing, for projecting light beams emitted by the plurality of LEDs in substantially parallel planes over the housing, and a controller, fastened on the housing and coupled with the plurality of PD receivers, (i) for controlling the at least one LED selector, (ii) for controlling the at least one PD selector, and (iii) for determining therefrom position and velocity of an object crossing at least one of the substantially parallel planes, based on output currents of the plurality of PD receivers.07-30-2009
20120188205ASIC CONTROLLER FOR LIGHT-BASED TOUCH SCREEN - A controller including a chip package coupled with a light-based touch screen, emitter driver circuitry inside the chip package for selectively activating photoemitters that are outside of the chip package, detector driver circuitry inside the chip package for selectively activating photo detectors that are outside of the chip package, detector signal processing circuitry for generating detection signals representing amounts of light detected on the photo detectors, signal conducting pins for connecting the photoemitters to the emitter driver circuitry, signal conducting pins for connecting the photo detectors to the detector driver circuitry and to the detector signal processing circuitry, controller circuitry inside the chip package for controlling the emitter driver circuitry and the detector driver circuitry, and at least one input/output pin for outputting the detection signals to a host processor, for the host processor to identify one or more locations on the touch screen that are being touched.07-26-2012
20120188204TOUCH SENSING SUBSTRATE AND METHOD OF MANUFACTURING THE SAME - A touch sensing substrate includes a substrate, a first light sensing element, a second light sensing element and a first bias line. The first light sensing element includes a first gate electrode, a first active pattern overlapping with the first gate electrode, a first source electrode partially overlapping with the first active pattern and a first drain electrode partially overlapping with the first active pattern. The second light sensing element includes a second gate electrode, a second active pattern overlapping with the second gate electrode, a second source electrode partially overlapping with the second active pattern and a second drain electrode partially overlapping with the second active pattern. The first bias line is connected to the first and second gate electrodes.07-26-2012
20120268427Optical Filtered Sensor-In-Pixel Technology for Touch Sensing - Optical filtered sensor-in-pixel technology for touch sensing, in which a waveguide receives infrared light emitted by a light source and causes at least some of the received infrared light to undergo total internal reflection within the waveguide. A frustrating layer is disposed relative to the waveguide so as to contact the waveguide when a touch input is provided. The frustrating layer causes frustration of the total internal reflection of the received infrared light within the waveguide at a contact point between the frustrating layer and the waveguide. A sensor-in-pixel display displays an image that is perceivable through the waveguide and the frustrating layer and includes photosensors. The photosensors have a photosensor corresponding to each pixel of the image and sense at least some of the infrared light that escapes from the waveguide at the contact point.10-25-2012
20120268424METHOD AND APPARATUS FOR RECOGNIZING GESTURE OF IMAGE DISPLAY DEVICE - An image display device capable of providing a realistic interface by increasing a response speed of a gesture recognition by reducing the amount of calculation, and a method for controlling an operation thereof are disclosed. The method for controlling an operation of an image display device includes: capturing a first image by using a camera and extracting depth data from the captured first image; detecting a first object by using a peak value from the depth data extracted from the first image; capturing a second image by using the camera and extracting depth data from the captured second image; detecting a second object by using a peak value from the depth data extracted from the second image; and designating the second object as an interested object based on the distance between the first and second objects.10-25-2012
20120026134UNIFIED INPUT AND DISPLAY SYSTEM AND METHOD - A unified input and display system and method for enabling sensing interferences made by a user (such as touch or hovering) using multiple interference techniques and instruments. One system comprises: a touch screen that enables emitting and guiding light to enable a user to input drawings by physically interfering the light emitted therefrom and displaying of the interference therethrough; a sensing system comprising a multiplicity of optical sensors arranged according to a predefined layout positioned in relation to the touch screen in a manner that allows the sensors to sense light arriving from the touch screen and translate the sensing into frames each including a pixilated image data of the sensed light; and a screen unification module enabling to unify frames sensed by the sensors at a given moment into a single screen reading comprising a unified whole-screen pixilated image data.02-02-2012
20100020044LIGHT SENSITIVE DISPLAY WITH SWITCHABLE DETECTION MODES - A display device including a surface for viewing an image comprising a stack of layers configured to display the image. A processor is configured to include switchable detection modes. Each mode is preconfigured to detect an object on or near the surface based on a given sensitivity to light, and has a different sensitivity than other of the modes.01-28-2010
20090184942OPTICAL SENSOR BASED USER INTERFACE FOR A PORTABLE ELECTRONIC DEVICE - An apparatus and method are described herein, which simultaneously promotes a positive computing experience for users of portable computer systems and increases overall durability and longevity thereof. In one embodiment, an optical apparatus enhances the user computing experience, in one embodiment by simplifying operation, and is much more durable and long-lasting than mechanical switch and dial type devices it may replace. In one embodiment, the present invention is directed to an apparatus, which enables efficient portable computer device function, field, and data selection, gaming, input, interconnection, and other switching-related functions, simplifying operation and enhancing versatility thereof, yet without exposing the portable computer interior to any degree to incursion of environmental contamination. In one embodiment, an optical apparatus obviates openings in a portable computer package which would otherwise be required. In one embodiment, the apparatus, capable of sensing manipulation and directed by software, has a light source and corresponding light sensor.07-23-2009
20110298754Gesture Input Using an Optical Input Device - A method, an apparatus and a computer program, the method including detecting first information, indicating that a first action is to be performed, from an optical user input device, the first information being provided by the optical user input device in response to gesture input from a user; detecting further information from an input device; and using the further information to disambiguate, subsequent to detection of the first information, second information provided by the optical user input device to determine whether the second information indicates termination of the gesture input or continuation of the gesture input.12-08-2011
20110032217OPTICAL TOUCH APPARATUS - The invention provides an optical touch apparatus. The optical touch apparatus includes at least one optical path unit and at least one light sensing unit. The at least one optical path unit is located on a first side of a display unit of the optical touch apparatus and used to receive at least one directional incident light, the at least one directional incident light is focused to form an image in an imaging region through at least one refraction in the at least one optical path unit. The at least one light sensing unit is located at a relative position of the at least one optical path unit, and used to generate a sensing result according to the image in the imaging region.02-10-2011
20110169778INTERACTIVE PROJECTION SYSTEM - An interactive projection system, apparatus, and methods for their use are provided. The system includes a projection unit that projects an image of a user interface onto a projection surface. At least one vision sensor is provided that is configured to sense a location of an infrared light source. A computing device that is configured to execute applications to provide the user interface and to determine corresponding outputs based on inputs received by the vision sensor is also provided. An infrared input device, or stylus, is employed by a user to provide infrared light inputs at desired locations with respect to the projected user interface. Additionally, a plurality of styli, each emitting a different respective wavelength of infrared light is also useable to provide multiple simultaneous inputs to the system. An equal plurality of vision sensors may also be employed to separately sense inputs from a respective stylus.07-14-2011
20110169774TOUCH MODULE, DISPLAY DEVICE HAVING THE TOUCH MODULE, AND METHOD FOR DETECTING A TOUCH POSITION OF THE TOUCH MODULE - The present invention relates to a touch module including a light emitting part, a light waveguide, a frustration layer, and a light receiving part. The light emitting part emits light and is disposed along a first direction. The light waveguide includes a first side surface and a second side surface and transmits light incident to the first side surface to the second side surface. The light emitting part is disposed on the first side surface, and the second side surface is disposed opposite to the first side surface along a second direction substantially perpendicular to the first direction. The frustration layer is disposed over the light waveguide and contacts the light waveguide in response to a touch to frustrate a total internal light reflection. The light receiving part is disposed on the second side surface of the light waveguide to detect a position of the touch. The frustration layer includes a plurality of frustration parts, the total internal light reflection is frustrated at a contact surface between a frustration part and the light waveguide, and an area of a first frustration part differs from an area of a second frustration part that is spaced apart from the first frustration part.07-14-2011
20090153522FUNCTION SWITCH METHODS AND SYSTEMS - Function switch methods and systems for use in an electronic device having a touch-sensitive device are provided. First, the touch-sensitive device is touched by an input tool. Then, it is determined to switch between functions according to a force of the input tool touching the touch-sensitive device.06-18-2009
20090146971OPERATION DISPLAY DEVICE - An operation display device including: a display section capable of simultaneously displaying different operation screens in a plurality of directions; a touch panel provided on the display section; an operation direction detection section which detects, among the plurality of directions, an operation direction on which an operator operating the touch panel is present; a coordinate detection section that detects, on the touch panel, a coordinate of a location pressed down by the operator; and a control section that sets, for each of the operation screens, correlations between operation icons displayed on the respective operation screens and recognition regions on the touch panel, and that, based on the operation direction detected by the operation direction detection section and correlations between the operation icons and the recognition regions, determines that an operation icon that corresponds to a recognition region including the coordinate of the location pressed down, is pressed down.06-11-2009
20100134442Detecting Method for Photo-Sensor Touch Panel and Touch-Sensitive Electronic Apparatus using the same - An exemplary detecting method for a photo-sensor touch panel and a touch-sensitive electronic apparatus using the same are provided. In aforementioned method, an image frame is obtained by scanning the photo-sensor touch panel. Then, a distribution area of data points in the image frame each having a brightness between a predetermined brightness and a first threshold brightness is defined as a first sensing area, and a distribution area of data points in the image frame each having a brightness between the predetermined brightness and a second threshold brightness is defined as a second sensing area. Afterward, it is determined that whether a real touch probably/really occurred according to a relative distance between one of first data points and corresponding one of second data points. The first data points located in the first sensing area, and the second data points located in the second sensing area.06-03-2010
20100013795Display apparatus, method for controlling display apparatus, and electronic apparatus - A display apparatus includes a display unit including display elements and light detection elements, a light emitting unit including a light emitting element, a first controller for controlling the light emitting element, a second controller for selectively controlling the light detection elements, a signal processing unit for processing a detection signal obtained by detecting light emitted from the light emitting unit using the light detection elements and acquiring coordinate information, and a clock generator for providing a base frequency to the signal processing unit and the first and second controllers. The first controller causes the light emitting element to emit light during a signal light emission period and stop emission of the light during a light emission stop period, and the first controller superposes the base frequency on a signal serving as the coordinate information and causes the light emitting element to emit light during the signal light emission period.01-21-2010
20090146972APPARATUS AND METHOD FOR DETECTING A POINTER RELATIVE TO A TOUCH SURFACE - An apparatus for detecting a pointer relative to a touch surface includes at least two spaced imaging assemblies having overlapping fields of view encompassing the touch surface. The imaging assemblies see the touch surface in three-dimensions as a perspective view. The imaging assemblies acquire overlapping images from different locations. A processor receives and processes image data generated by at least one of the imaging assemblies to determine the location of the pointer relative to the touch surface.06-11-2009
20110169781TOUCH SCREEN CALIBRATION AND UPDATE METHODS - A method of calibrating optical components in a light-based touch screen, including providing (i) a display, (ii) a row of light pulse emitters that sequentially transmit light pulses over the display according to calibrated pulse current and pulse duration controls, and (iii) a row of light pulse receivers that receive the light pulses and that output values representing the received light pulses, each receiver having expected values for emitter-receiver pairs when the light pulses are not blocked, determining if each receiver output value for a receiver-emitter pair is within a respective designated range from the corresponding receiver expected value, and when a receiver output value for a receiver-emitter pair is outside the designated range, recalibrating the emitter, including adjusting at least one of the emitter pulse current and pulse duration such that subsequent receiver output values are within the designated range, and updating the receiver expected value for the receiver-emitter pair based on subsequent output values of the receiver.07-14-2011
20100128004IMAGE PICKUP DEVICE, DISPLAY-AND-IMAGE-PICKUP DEVICE, ELECTRONIC APPARATUS AND METHOD OF DETECTING AN OBJECT - An image pickup device capable of stably detecting an object irrespective of use conditions while reducing manufacturing costs is provided. When illumination light from a backlight 05-27-2010
20100033450Display Device and Electronic Device - To increase a reading speed in a display device having a touch-panel function. The display device includes a display panel 02-11-2010
20100117988OPTICAL ELEMENT AND TOUCH SENSOR - A touch sensor for a touch display is provided which includes an optical element including at least one electrically conductive layer, the at least one electrically conductive layer being partially reflective and partially transmissive with respect to incident light; and sensing circuitry electrically coupled to the at least one electrically conductive layer to determine positioning of a finger, hand or other type of pointing device relative to the optical element.05-13-2010
20100123683WAVEGUARD TOUCH PANEL - A method and apparatus are provided for detecting activation of a touch panel (05-20-2010
20090309853ELECTRONIC WHITEBOARD SYSTEM AND ASSEMBLY WITH OPTICAL DETECTION ELEMENTS - An electronic whiteboard system and assembly with optical detection elements is disclosed. The electronic whiteboard system includes a writing/display surface and a retroreflective perimeter surrounding the edge of the surface. A user can mark upon the surface or interact with an image displayed on the surface using an input device. The perimeter can reflect light beams emitted from optical detection elements located at the corners of the surface to identify the position of the input device relative to the writing surface and/or projected image. The electronic whiteboard assembly includes one or more electronic whiteboard systems coupled together with a connector element having two retroreflective surfaces.12-17-2009
20120293461INFRARED TOUCH SCREEN DEVICE CAPABLE OF MULTI-TOUCH POINTS SENSING - An infrared touch screen device capable of smoothly sensing contact positions of a plurality of touch points and sensing multi-touch points, when a plurality of touch points are produced, are provided. The infrared touch screen comprises a screen provided with a display panel on which an image is projected and a reinforced glass plate formed on a front surface of the display panel, an reinforced glass plate formed on a front surface of the screen to protect the screen and on which a touch is made, an optical scanner formed on one side of the screen and scanning the screen with the infrared, a light guide bar formed on a border of the reinforced glass plate, a light receiving portion provided on a distal end of the light guide bar, and a position detector for detecting the touch position with a scanning angle of the optical scanner.11-22-2012
20100117989TOUCH PANEL MODULE AND TOUCH PANEL SYSTEM WITH SAME - An exemplary touch panel module includes a touch panel, a supporting body, a plurality of first elastic members sandwiched between the touch panel and the supporting body, and a plurality of displacement sensors mounted on the supporting surface. The touch panel includes a touch surface, and a reflection surface opposite to the touch surface. The supporting body includes a supporting surface facing the reflection surface. Each first elastic member is deformable along a direction substantially perpendicular to the touch surface. Each displacement sensor is configured for sensing deformation of the corresponding first elastic member.05-13-2010
20100079409TOUCH PANEL FOR AN INTERACTIVE INPUT SYSTEM, AND INTERACTIVE INPUT SYSTEM INCORPORATING THE TOUCH PANEL - A touch panel for an interactive input system and interactive input system incorporating the touch panel is provided. The touch panel includes an optical waveguide layer and a resilient diffusion layer. The resilient diffusion layer is against the optical waveguide layer and causes light traveling within the optical waveguide layer to escape only when compressed against the optical waveguide layer at one or more touch points.04-01-2010
20100214268Optical touch liquid crystal display device - The present invention relates to an optical touch liquid crystal display device comprising a liquid crystal display panel for displaying an image, a backlight unit disposed beneath the liquid crystal display panel for providing a backlight for the liquid crystal display panel, a bezel, at least a light emitting element, and at least an optical sensor. The bezel comprises an inside surface having a horizontal surface and a vertical surface. The bezel surrounds and fixes the liquid crystal display panel and the backlight unit. The light emitting unit is disposed on the inside surface of the bezel for providing light to form an optical matrix at the image display side of the liquid crystal display panel. The optical sensor is disposed on the inside surface of the bezel for detecting a touch on the liquid crystal display panel.08-26-2010
20110141060Optical touch panels and methods of driving the same - An optical touch panel may include a plurality of light-sensing areas. The plurality of light-sensing areas may be integrally formed with pixels in a display panel or may be formed on the display panel, in order to sense incident light from outside the optical touch panel. A method of driving an optical touch panel may include sensing a change in an output from a plurality of light-sensing areas between two time points and determining that there is an optical input when the change in the output is greater than or equal to a first reference value that is defined in advance. The light-sensing areas may be integrally formed with pixels in a display panel or formed on a surface of the display panel, for sensing incident light from outside the optical touch panel.06-16-2011
20090213094Optical Position Sensing System and Optical Position Sensor Assembly - An optical position sensing system includes a bezel surrounding a display, a position sensor assembly, and a processor for calculating touch locations. Prismatic film may be applied to the bezel. Each optical position sensor assembly includes a body. A lens holder holds an illumination window on a first side and a single element aspherical lens on a second side. The lens holder is mounted to a front face of the body such that the lens is aligned with an opening in the body. An optical sensor is mounted to a rear face of the body and aligned with the opening. A radiation source is positioned within the body above the lens holder and behind an illumination window. A light path separator is positioned between the illumination window and the imaging window, so that the radiation path is optically separated from the view path of the optical sensor.08-27-2009
20090213095DISPLAY AND IMAGING APPARATUS AND OBJECT DETECTING METHOD - A displaying and imaging apparatus includes a displaying and imaging panel, a generating unit for generating a difference image between a reflection light using image and a shadow image obtained from the displaying and imaging panel, and an image processing unit for obtaining information of at least one of position, shape, and size of the adjacent object on the basis of the difference image. The generating unit generates, on the basis of a plurality of images obtained at timings different from each other, which are one of the reflection light using image or the shadow image, one interpolation image corresponding to the one of images obtained at a timing different from those of the plurality of images, and generates the difference image by the difference between the interpolation image and the other one of the reflection light using image and the shadow image.08-27-2009
20100085331TOUCH PANEL AND METHOD FOR DRIVING THE SAME - A touch panel having high reading accuracy of an object to be detected is provided. In a method for driving a touch panel which is provided with a photo sensor in a pixel, an image is displayed in a display portion of a touch panel, a detection region is determined by detecting approach or contact of an object to be detected in a state in which the image is displayed, and the object to be detected is read while substantially equalizing the intensity of light of pixels in the detection region per unit time and unit area. The intensity of light of the pixels per unit time and unit area, which is to be substantially equal, is preferably the maximum intensity of light in the detection region before adjustment, more preferably, the intensity of light for white display.04-08-2010
20100079412Calibrating apparatus and method - A calibrating apparatus for an image processing apparatus is disclosed. The calibrating apparatus comprises a first operating module and a second operating module. The first operating module determines a third indicating point and a fourth indicating point according to a first indicating point, a second indicating point, and a specific point, and determines a calibration point (i.e. the predetermined position of a sensor) according to a first line through the first indicating point and third indicating point and a second line through the second indicating point and fourth indicating point. The second operating module forms reference lines according to reference points and the calibration point, forms reference angles according to the reference lines and a parallel line, generates reference coordinates of the reference points in an image and generates a calibration function according to the reference coordinates of the reference points and the reference angles.04-01-2010
20090207154SENSING DEVICE, DISPLAY DEVICE, ELECTRONIC APPARATUS, AND SENSING METHOD - A sensing device includes: a plurality of sensors that are arrayed on a screen and that generate first detection signals each having a level corresponding to a touch state of an object on the screen or a distance between the object and the screen; a read unit that reads the first detection signals from the plurality of sensors at predetermined periods; a binarization unit that compares a level of each of the first detection signals read by the read unit with a threshold value and generates a second detection signal that is binarized; a determination unit that determines whether or not the object touches the screen on the basis of each second detection signal; a detection unit that detects a touch position of the object on the screen on the basis of each second detection signal; and a control unit that controls the read unit such that the predetermined period becomes a first period when the determination unit determines that there is no touch and that controls the read unit such that the predetermined period becomes a second period shorter than the first period when the determination unit determines that there is a touch.08-20-2009
20090207153LIQUID CRYSTAL DISPLAY DEVICE AND A METHOD OF MANUFACTURING THE SAME - Disclosed herein is a liquid crystal display device including a liquid crystal panel having a first substrate, a second substrate facing the first substrate, a liquid crystal layer disposed between the first substrate and the second substrate, and first and second electrodes formed on a surface side, of the first substrate, facing the second substrate, a transverse electric field being applied to the liquid crystal layer through the first and second electrodes, thereby displaying an image in a pixel area; wherein the first substrate includes: a light receiving element provided on the surface, of the first substrate, facing the second substrate, for receiving an incident light on a light receiving surface thereof, thereby forming data on the received light; and a planarizing film provided on the surface side, of the first substrate, facing the second substrate so as to cover the light receiving element.08-20-2009
20100079413Control device - There is provided a control device for an in-vehicle electronic apparatus. The control device includes: a manipulation input element that has a manipulation input region having a predetermined area; an imaging device that has a photographing range covering the manipulation input region, and that captures an image including a hand image region representative of the hand; a hand image region identification section that identifies the hand image region in the image; an area ratio calculation section that calculates a value of hand image area ratio, which is area ratio of the hand image region to the manipulation input region; and an operation input information generation section that generates and outputs operation input information based on the calculated value of the hand image area ratio and a manipulation state of the manipulation input region, the operation input information being directed to the in-vehicle electronic apparatus.04-01-2010
20100079411OPTICAL FINGER NAVIGATION UTILIZING QUANTIZED MOVEMENT INFORMATION - A user input device includes an optical element comprising a finger interface surface, a light source in optical communication with the finger interface surface and configured to provide light from the light source to the finger interface surface, a sensor array configured to detect light reflected from the finger interface surface in response to contact between a finger and the finger interface surface, a navigation engine coupled to the sensor array, the navigation engine configured to generate lateral movement information, which is indicative of lateral movement of the finger relative to the sensor array, in response to the detected light, wherein the lateral movement information comprises first and second orthogonal components, and a quantization engine coupled to the navigation engine, the quantization engine configured to compare the first orthogonal component to the second orthogonal component and to generate first and second quantized orthogonal components in response to the comparison.04-01-2010
20100079410THREE-DIMENSIONAL TOUCH INTERFACE - A device includes a flexible display, and multiple tactile components provided adjacent to a bottom of the flexible display. The device also includes a movement device configured to move at least one of the multiple tactile components to engage a portion of the bottom of the flexible display to produce a tactile area on the flexible display.04-01-2010
20100079408USER INPUT DEVICE WITH PLANAR LIGHT GUIDE ILLUMINATION PLATE - A user input device to generate an optical navigation signal based on an edge-lit pattern. The user input device includes an optical element, a light source, a sensor array, and a navigation engine. The optical element includes a finger interface surface. At least a portion of the optical element exhibits total internal reflection (TIR). The light source provides light to the finger interface surface. The sensor array detects light reflected from the finger interface surface in response to contact between a finger and the finger interface surface. The contact between the finger and the finger interface surface disrupts the TIR and causes light to be reflected out of the optical element towards the sensor array. The navigation engine generates lateral movement information, which is indicative of lateral movement of the finger relative to the sensor array, in response to the detected light.04-01-2010
20100090987Sensing System - A sensing system includes a panel, a reflective element, an image sensor, a processor, a first light guide rod, a second light guide rod and a light source module. The panel has a plane and a first area and a third area located at the plane. The third area in the first area is smaller than or equal to the first area. The first area has four boundaries connected in order. A reflective mirror plane of the reflective element disposed at the first boundary mirrors the first and third areas. The image sensor disposed at the intersection of the third and fourth boundaries is electrically connected to the processor. The first and the second light guide rods are disposed at the second and the third boundaries respectively. The light source module is adapted to emit light passing through the first and the second light guide rods to the image sensor.04-15-2010
20110169775STYLUS AND TOUCH INPUT SYSTEM - A touch input system including a stylus and a display device is provided. The stylus includes a battery module, a touch portion, a transducer module and a RF transmitting module. When a contact pressure is acted on the touch portion, the touch portion is electrically connected to the battery module by the contact pressure and emits a light signal. The display region receives and reacts to the light signal, and the contact pressure is transformed into an electrical signal by the transducer module. The RF transmitting module is electrically connected to the transducer module and transmitting the electrical signal. The display device includes a display region and a RF receiving module.07-14-2011
20130021298DISPLAY DEVICE AND DRIVING METHOD THEREOF - A display device includes: a display panel; and a sensing signal processor connected to the display panel, in which the display panel includes: a gate line which transmits a gate signal; a sensing signal line crossing the gate line; a reference sensing signal line crossing the gate line; a sensing unit connected to the gate line and the sensing signal line, where the sensing unit senses light by a touch on the display panel; and a reference sensing unit connected to the gate line and the reference sensing signal line and blocked from the light by the touch, and where the sensing signal processor is connected to the sensing unit and the reference sensing unit and includes a comparator.01-24-2013
20130187893ENTERING A COMMAND - An embodiment provides for entering a command into a system. The method includes detecting a pattern placed in view of a sensor. The pattern can be recognized and associated with an operation code sequence. The operational code sequence may be executed when the sensor detects an intersection between the recognized pattern and an object.07-25-2013
20090085893Field-Sequential Display Apparatus and Display System Capable of Sensing Pixel Address - A field-sequential display apparatus and a display system which is capable of sensing pixel address are provided. The field-sequential display apparatus comprises a plurality of pixels, each of which is adapted to present a plurality of display states. The display states includes at least one colored light and an invisible light, wherein the at last one colored light and invisible light are alternately displayed, and the invisible light is adapted to transmit the address information of the pixel.04-02-2009
20100123684SENSING CIRCUIT, DISPLAY DEVICE, AND ELECTRONIC APPARATUS - A sensing circuit includes: a data generating section for generating data representing the amount of light received by a plurality of optical detection circuits, which are provided in a detection region, for each unit period on the basis of detection signals output from the plurality of optical detection circuits; a setting section for variably setting a differential unit period number which is the number of unit periods between two unit periods having a difference to be acquired; a difference data generating section for sequentially generating difference data between the data, which is generated by the data generating section in the current unit period, and the data, which is generated by the data generating section in the unit period previous to the current unit period by the differential unit period number, for each of a plurality of the unit periods; and an approach detecting section for detecting whether or not an object is approaching the detection region on the basis of the difference data generated by the difference data generating section.05-20-2010
20110199339Object Locating System with Cameras Attached to Frame - An imaging system includes a frame with a retroreflective bezel and cameras attached directly to the frame.08-18-2011
20090091554CORRECTING FOR AMBIENT LIGHT IN AN OPTICAL TOUCH-SENSITIVE DEVICE - The correction of an image for ambient light in an optical touch-sensitive device is disclosed. For example, one disclosed embodiment comprises integrating a first field of pixels in an image data frame for a different duration of ambient light exposure than a second field of pixels in the image data frame. Intensity data is read from the first field of pixels and the second field of pixels, and an ambient light value is determined for one or more pixels in the image data frame from the intensity data. The ambient light value then is used to adjusting one or more pixels of the data frame for ambient light.04-09-2009
20110169782OPTICAL TOUCH SCREEN USING A MIRROR IMAGE FOR DETERMINING THREE-DIMENSIONAL POSITION INFORMATION - A touch screen system including a reflective display surface, a camera mounted so as to capture an image of (i) the reflective display surface, (ii) a pointer approaching the reflective display surface, and (iii) a reflection of the pointer on the reflective display surface, and a processor coupled with the camera that determines a three-dimensional location of the pointer relative to the reflective display surface, based on the positions of the pointer and the reflection of the pointer in the image captured by the camera.07-14-2011
20110169779INFRARED SENSOR INTEGRATED IN A TOUCH PANEL - An infrared source is configured to illuminate the underside of one or more objects on or above a touchable surface of a touch panel. Infrared light reflected from the underside of the object(s) is detected by an infrared sensor integrated in the touch panel below the touchable surface.07-14-2011
20110169772Touch Device, Display Substrate, Liquid Crystal Display and Operation Method for Photo Sensor - A touch device is disposed on a substrate having a plurality of gate lines. The touch device comprises a power line, a photo sensor and a readout line. The photo sensor is electrically coupled to the power line and two specific gate lines of the gate lines, and generated a different output signal according to irradiation with a different level. The readout line is electrically coupled to the photo sensor for outputting the output signal. The photo sensor comprises a readout switch and a photosensitive switch. The readout switch is electrically coupled to one of the two specific gate lines. The photosensitive switch is electrically coupled to another of the two specific gate lines and the power line. Signals in another of the two specific gate lines and the power line cooperate to determine whether the photosensitive switch is in an off state.07-14-2011
20110169776IMAGE PROCESSOR, IMAGE DISPLAY SYSTEM, AND IMAGE PROCESSING METHOD - An image processor includes: an estimated image generating unit that generates an estimated image from image data based on image information obtained by taking a model image displayed on a display screen with a camera without being blocked by an object to be detected; an object-to-be-detected detecting unit that detects an object-to-be-detected region blocked by the object to be detected in a display image; and an application processing unit that detects, as an indicated position, a position corresponding to the user's fingertip in the object-to-be-detected region detected by the object-to-be-detected detecting unit and performs the predetermined process in accordance with the indicated position.07-14-2011
20110169773TOUCH KEYBOARD - A touch keyboard includes a touch panel and a circuit board mounted in a housing. The touch panel includes a plurality of labeled touch portions reflecting an infrared ray when being touched. A plurality of infrared emitters and receivers are mounted on the circuit board each of which are corresponding to one of the touch portions. The infrared ray emitted by each infrared emitter is assigned with an identifier, the corresponding infrared receiver generates an electrical signal with the identifier. Each identifier corresponds to a touch portion. The processing unit mounted on the circuit board determines the identifier and the current intensity of the electrical signal. If the current intensity of the electrical signal is greater than or equal to a preset current intensity, the processing unit determines one of the touch portions is touched. As such, the processing unit further determines which of the touch portions is touched.07-14-2011
20090085894MULTIPOINT NANOSTRUCTURE-FILM TOUCH SCREEN - A touch screen comprising at least one nanostructure film and capable of detecting multiple touches occurring at the same time at distinct locations in a plane of the touch screen is described. The touch screen may comprise a sensing layer, a driving layer and/or a shielding layer. At least one of these layers may comprise a nanostructure film, and at least two of these layers may be formed on a common substrate.04-02-2009
20090273581DISPLAY FILTER AND DISPLAY DEVICE HAVING THE SAME - A display filter for a display device having a display panel includes a base substrate disposed in front of the display panel; an optical filter part layered based on the base substrate and comprising at least an anti-reflection layer; and a touch signal sensing part layered on the base substrate or the optical filter part and sensing a touch signal by a sensed object. An optical filter and a touch input means are combined together, and thereby the display filter can perform a touch input function as well as an optical filter function.11-05-2009
20090295755RETROREFLECTOR FOR USE IN TOUCH SCREEN APPLICATIONS AND POSITION SENSING SYSTEMS - A touch screen system and prismatic film includes a retroreflective substrate having a plurality of retroreflective elements having triangular cube corners. A metallized layer is disposed over at least a portion of the retroreflective elements. In one embodiment, the prismatic film includes two colored substrates mounted over the retroreflective elements. In another embodiment, a single substrate is mounted over the retroreflective elements. It is often desired that a color of the substrate(s) be chosen that is highly transparent in the infrared spectrum, but is also non-transparent in the visible light spectrum, giving the prismatic film a dark appearance. The prismatic film includes a plurality of retroreflective elements having triangular cube corners with a cant in a range between about 4 degrees in a face more parallel direction to 18 degrees in an edge more parallel direction and a cube depth between about 0.002 and 0.008 inches or with a cant of about 5.5 to 22 degrees in an edge more parallel direction and a cube depth between about 0.0005 and 0.004 inches, or with a cant of about 8 to 35 degrees in a face more parallel direction and a cube depth between 0.001 and 0.012 inches.12-03-2009
20110199340ARRANGEMENT FOR A TOUCHSCREEN AND RELATED METHOD OF MANUFACTURE - Arrangement for use with a touchscreen, includes a substrate, such as an optically substantially transparent film or a film defining a through hole, the substrate including support electronics, such as printed electronics including a number of printed conductors, for providing power, control and/or communications connection to further electronic components, a number of emitters and detectors arranged on the substrate into contact with the support electronics, for emitting and detecting light, respectively, and a lightguide arranged onto the substrate such that the emitters and detectors, and optionally at least part of the support electronics, are substantially immersed in the lightguide material, the properties of the lightguide including the refractive index of the lightguide material being selected and the emitters and detectors being configured so as to enable, when in use, total internal reflection (TIR)-type propagation of light within the lightguide between the emitters and detectors and recognition of a touch on the basis of a drop in the TIR performance as determined from the detected light. A related method of manufacture is presented.08-18-2011
20110199335Determining a Position of an Object Using a Single Camera - A coordinate detection system can comprise a display screen, a touch surface corresponding the top of the display screen or a material positioned above the screen and defining a touch area, at least one camera outside the touch area and configured to capture an image of space above the touch surface, and a processor executing program code to identify whether an object interferes with the light from the light source. The processor can be configured to carry out a position detection routine by which information about a point, including can be determined using a single camera. The information may comprise an indication of distance from the plane and/or a three-dimensional coordinate for the point.08-18-2011
20100289773Controlling Method Applied to a Sensing System - A controlling method applied to a sensing system includes the following step. Whether a specific function is started is determined according to the size of a total pattern acquired. In an embodiment of the present invention, the step of determining whether the specific function is started according to the size of the total pattern acquired is the step of determining whether the specific function is started according to the size of the total pattern acquired and the length of time to successively acquire the total pattern. Accordingly, it is more convenient for a user to use the sensing system having the said controlling method.11-18-2010
20100277438Operation apparatus for in-vehicle electronic device and method for controlling the same - An operation surface detects a touch point specified by an operator. An imaging area obtains a hand image of the operator. A fingertip detection unit detects a fingertip of the hand image. A display device includes a display screen having coordinates uniquely corresponding to the operation surface and the imaging area. The display device indicates the fingertip and an operation panel specific to an in-vehicle electronic device to be operated. An interface engine having a prescribed interface relationship between an input, which is specified by at least one of the touch point and the fingertip, and an output to be outputted to the in-vehicle electronic device according to a combination of the input and the interface relationship. An alteration unit alters the interface relationship according to a detected traveling state of the vehicle.11-04-2010
20090289920OPTICAL REFLECTED TOUCH PANEL AND PIXELS AND SYSTEM THEREOF - An optical reflective touch panel and pixels and a system thereof are provided. Each pixel of the optical reflective touch panel includes a display circuit and a sensing circuit. The display circuit controls the display of the pixel. The sensing circuit is coupled to the display circuit for sensing a sensitization state of the pixel during a turned-on period and a turned-off period of a backlight module and outputting a digital signal to notify an optical reflective touch panel system that whether the pixel is touched or not.11-26-2009
20090289919Liquid crystal display device - A liquid crystal display device is adapted to reduce cross-talk and signal noise so as to improve the perception ratio and accuracy of a sense element. The liquid crystal display device includes: a liquid crystal panel including a plurality of pixels connected to gate lines and data lines thereon, respectively; a gate drive circuit applying scan signals to the gate lines; a data drive circuit applying pixel voltage signals to the data lines; at least one sensor unit formed in at least one pixel region and sensing external lights and a touch of the liquid crystal panel; a switch unit switching a switch voltage and the pixel voltage signals to be applied to the data lines on the liquid crystal panel; a sense processor processing the sensed signal from the sensor unit; and a timing controller controlling the gate drive circuit, the data drive circuit, the switch unit, and the sense processor to be driven in one of data write mode and light sense mode.11-26-2009
20110169777IMAGE PROCESSING APPARATUS, IMAGE DISPLAY SYSTEM, AND IMAGE PROCESSING METHOD - An image processing apparatus includes: an under-detection object detecting section that detects an under-detection object area in an image displayed on a display screen based on image data, the detection being performed based on a captured image obtained by using a camera to capture the displayed image blocked by the under-detection object; and an application processor that extracts an under-detection object captured image contained in the under-detection object area, acquires shape data representing an image of the under-detection object from a database that stores the shape data and information data representing information on the under-detection object, checks the under-detection object captured image against the shape data, acquires the information data related to the shape data that matches the under-detection object captured image from the database, and outputs the information data.07-14-2011
20090262098ELECTRONICS DEVICE HAVING PROJECTOR MODULE - An electronics device having a projector module including a first light source, and a first scanner scanning an image projection surface in a biaxial direction; a distance measuring device performing one-dimensional scanning on a plane over the image projection surface to determine the position of an optical interceptor and including a second light source, a second scanner performing scanning with the second light beam, and a light detector detecting the second light beam reflected from the optical interceptor; and a controller. The uniaxial-scanning component of the first scanner is shared with the second scanner. The positional data are compared with two-dimensional coordinate data of the projected image to determine the position of the optical interceptor on the projected image. The controller inputs a signal to the electronics device when determining that the optical interceptor performs optical interception on the projected image.10-22-2009
20090262097FRAME ASSEMBLY FOR TOUCH SCREEN - The dimension detection system is implemented in cascaded circuit boards housed inside a frame assembly of the touch screen. After the frame assembly is assembled and powered, the dimension detection system in the circuit boards would provide horizontal and vertical feedback signals which are utilized to obtain the size of the touch screen. The size information of the touch screen could then be provided to the computer or embedded system where the touch screen is connected, preventing troublesome manual configuration. The dimension detection system and the flexible frame assembly together make the touch screen's production, storage, transportation, and usage more efficient and friendly.10-22-2009
20090295754TOUCH PANEL - Touch panels comprising a bias line biased at a bias voltage, a select line, a readout line, a photo cell and a readout circuit. The photo cell comprises a first photo switch, a second photo switch and a storage capacitor. The first photo switch and the storage capacitor is coupled in series between the readout line and the bias line, and the first photo switch is further controlled by the select line. The second photo switch is connected between the readout line and the bias line. The readout circuit and the select line are managed by a reset mode, an exposure mode and a readout mode. The voltage variation of output terminal of the readout circuit is used in obtaining the state of the photo cell.12-03-2009
20090295756Detecting and tracking objects in images - According to one disclosed method, coordinates in a multi-dimensional space are determined for an image point characterizing a particular object. An equation describing a model in the space is provided. The model is characteristic of a set of training images of one or more other objects. The coordinates are applied to the equation to determine a distance between the image point and the model. Based on the determined distance, a determination is made as to whether the particular object matches the one or more other objects. A set of training images may be received. A multi-dimensional space (e.g., eigenspace) may be determined based on the set of training images. A set of training points may be generated by projecting the set of training images into the multi-dimensional space. An equation describing a model in the multi-dimensional space that is characteristic of the set of training points may be determined.12-03-2009
20110169780METHODS FOR DETERMINING A TOUCH LOCATION ON A TOUCH SCREEN - A method of determining a touch coordinate on a touch screen, including providing a display, a plurality of collimating lenses along two opposite edges of the display, the collimating lenses being arranged along the two edges so as to be shift-aligned relative to one another, a plurality of light pulse emitters that transmit light pulses through the collimating lenses of a first of the two edges over the display, and a plurality of light pulse receivers that receive the light pulses through the collimating lenses of the opposite of the two edges, and that output values representing the received light pulses, wherein light pulses emitted by each emitter are detected by at least two of the receivers, wherein each receiver detects light pulses emitted by at least two emitters, and wherein each receiver has expected values for emitter-receiver pairs when light pulses are not blocked, selecting receiver output values for emitter-receiver pairs that deviate significantly from corresponding receiver expected values, wherein the selected values indicate at least that light pulses transmitted by two emitters are blocked from reaching one receiver, or that light pulses transmitted by one emitter are blocked from reaching two receivers, associating a screen coordinate along a first screen axis with each selected receiver output, and calculating a touch coordinate by interpolating the associated screen coordinates according to the respective deviations between the selected receivers' output values and corresponding expected values.07-14-2011
20120194480DISPLAY APPARATUS AND POSITION DETECTING METHOD - An image generating unit of a display apparatus generates a determination image based on first and second light reception images obtained from light reception cells in a light-emission period and in a non-light-emission period, respectively. An image determining unit determines whether or not an image of an object to be detected is included in the determination image, stores data corresponding to the determination image as initial data into a storage when the object image is not included in the determination image, and stores the data corresponding to the determination image as detection data into the storage when the object image is included in the determination image. A position determining unit determines at least an object position based on an image represented by the detection data in the storage and an image represented by the initial data in the storage.08-02-2012
20120268425SENSING APPARATUS AND SENSING METHOD FOR SENSING TOUCH POSITION ON DISPLAY PANEL - A sensing apparatus includes a sensing cell and a processing circuit. The sensing cell is disposed inside a display panel, and includes a first type sensing device and a second type sensing device. The first type sensing device is arranged to generate a first type sensing signal when the sensing cell receives an input event. The second type sensing device is adjacent to the first type sensing device, and arranged to generate a second type sensing signal when the sensing cell receives the input event, wherein a sensing ability of the first type sensing device to detect the input event is different from a sensing ability of the second type sensing device to detect the input event. The processing circuit is arranged to output a sensing output signal corresponding to the sensing cell according to a difference between the first type sensing signal and the second type sensing signal.10-25-2012
20130100079TOUCH DISPLAY DEVICE - A touch display device includes a first substrate, a second substrate, a plurality of sub-pixel regions, a plurality of display devices, a plurality of first optical touch sensor device and second optical touch sensor devices. The first substrate and the second substrate are disposed oppositely. The display devices are disposed in the sub-pixel regions, respectively, to provide images for a first display surface and a second display surface. The first optical touch sensor devices are disposed on the first substrate and at least corresponding to part of the sub-pixel regions for implementing touch input function on the first display surface. The second optical touch sensor devices are disposed on the first substrate and at least corresponding to part of the sub-pixel regions for implementing touch input function on the second display surface.04-25-2013
20130100081OPTICAL TOUCH DEVICE AND PORTABLE ELECTRONIC DEVICE WITH HEART RATE MEASURING FUNCTION AND METHOD FOR INCREASING ACCURACY OF HEART RATE MEASUREMENT - Method for increasing accuracy of heart rate measuring includes sensing a finger of a user for generating sensed images of the finger, obtaining displacement information of the finger according to the sensed images, then using the motion information to compensate the sensed images of the finger, and finally using brightness variation of the compensated sensed images of the finger to measure heart rate of the user.04-25-2013
20100277437ELECTRONIC DEVICE AND CONTROLLING METHOD THEREOF - An electronic device includes a touch-screen, an infrared emitter, an infrared sensor and a control module. The touch-screen is configured for displaying a interface with various touchable items. The infrared emitter is configured for emitting infrared light. The infrared sensor is configured for receiving reflected infrared light, and for generating an electrical signal according to the reflected infrared light. The control module is configured for receiving the electrical signal and determining whether the value of the electrical signal is higher than a standard value. If the value of the electrical signal is higher than the standard value, the control module is further configured for invoking the touch interface on the touch-screen.11-04-2010
20110199336OPTICAL TOUCH DEVICE - An optical touch device is presented. When the optical touch device is in a sleep mode, only one of all image sensors of the optical touch device is enabled to detect an indication object on a touch area, so as to determine a wakeup time of the entire optical touch device.08-18-2011
20110199338TOUCH SCREEN APPARATUS AND METHOD FOR INPUTTING USER INFORMATION ON A SCREEN THROUGH CONTEXT AWARENESS - The present invention provides a touch screen apparatus comprising a first light emitting unit for generating an optical signal for performing non-touch sensing, a second light emitting unit for generating an optical signal for performing touch sensing together with the non-touch sensing, an optical guide unit for guiding light emitted from the second light emitting unit, and a light receiving unit for receiving light emitted and changed by an object. Further, the present invention provides a method for inputting user information on a screen through context awareness, which can input user information in an accurate and convenient manner on the screen through the awareness of a variety of user contexts, and which can effectively prevent an erroneous operation caused by a contact of the palm of the user by ignoring the contact coordinates input by a means other than the finger of the user on the screen.08-18-2011
20110199337OBJECT-DETECTING SYSTEM AND METHOD BY USE OF NON-COINCIDENT FIELDS OF LIGHT - The invention provides an object-detecting system and method for detecting information of an object located in an indicating space. In particular, the invention is to capture images relative to the indicating space by use of non-coincident fields of light, and further to determine the information of the object located in the indicating space in accordance with the captured images.08-18-2011
20100103142ELECTRONIC DEVICE WITH INFRARED TOUCH INPUT FUNCTION - An electronic device with infrared touch input function is provided. The electronic device includes a display unit defining an information display area; an infrared input device comprising a circuit board having two pairs of oppositely disposed sides defining an open area corresponding in size and shape to the information display area, at least one light emitting device positioned on one corner of the circuit board; a linear array of light detecting devices positioned on one side or two adjacent sides of the circuit board and faced to light emitting devices; and a micro-processing unit configured for determining whether the light detecting device receives the infrared light emitted by the light emitting device; and a central processing unit(CPU) configured for controlling the display unit displaying a plurality of menu options, determining whether the menu option is touched; and performing functions corresponding to the menu option when the menu option is touched.04-29-2010
20100060612OPTO-TOUCH SCREEN - There is provided an opto-touch screen including: an opto-touch panel including an infrared phosphor material emitting light when exposed to infrared light; a sensor part disposed at a side of the opto-touch panel to detect the light emitted from the opto-touch panel.03-11-2010
20100060613SIZE/SCALE ORIENTATION DETERMINATION OF A POINTER IN A CAMERA-BASED TOUCH SYSTEM - A touch system includes a touch surface and at least two cameras associated with the touch surface. The at least two cameras acquire images of the touch surface from different locations and having overlapping fields of view. A digital signal processor is associated with each camera. The digital signal processors process pixel data acquired by selected pixel subsets of the at least two digital cameras to generate pointer characteristic data when a pointer exists in the acquired images. The pointer characteristic data identifies edges of the pointer. A master digital signal processor triangulates the edge information in the pointer characteristic data to determine a bounding area that represents a pointer perimeter.03-11-2010
20100060611TOUCH DISPLAY WITH SWITCHABLE INFRARED ILLUMINATION FOR TOUCH POSITION DETERMINATION AND METHODS THEREOF - An electronic touch display includes a display device, a plurality of light sensors, an infrared light source, a switch circuit, and a touch position circuit. The light sensors are spaced apart and coupled to the display device. The infrared light source is coupled to the display device and configured to emit infrared light through the display device to illuminate an adjacent user object that is touching the display device. The switch circuit is configured to turn on the infrared light source in response to at least one of the light sensors indicating detection of the user object touching the display device. The touch position circuit is configured to identify a user touch position on the display device in response to signal levels from a plurality of the light sensors sensing infrared light from the infrared light source which is reflected by the user object to the plurality of the light sensors.03-11-2010
20110267315APPARATUS WITH POSITION DETECTION FUNCTION - In an apparatus with a position detection function, a position detecting section detects the position of a target object on the basis of a result obtained by receiving detection light, which is emitted from a light source section for detection and reflected by the target object, using a light detection section. As seen from an emitting direction of the detection light, the light detection section is located inside a region surrounded by a closed circuit passing through a plurality of the light source sections for detection or inside a region pinched by the plurality of light source sections for detection. The plurality of light source sections for detection has a first light-emitting element, and a second light-emitting element located closer to the light detection section side than the first light-emitting element. The light source driving section alternately turns on the first light-emitting element and the second light-emitting element.11-03-2011
20110267317AREA SENSOR, LIQUID CRYSTAL DISPLAY UNIT, AND POSITION DETECTION METHOD - A liquid crystal display unit (11-03-2011
20110267316MOBILE TERMINAL AND METHOD OF CONTROLLING THE SAME - A mobile terminal is presented. The mobile terminal includes an elongated body having a central axis and being structured to form an outer side having a circumference, an end portion located at one end of the elongated body, a touch screen coupled to the body, a projector positioned at the end portion and being configured to project an image onto a surface, and a camera coupled to the elongated body and being positioned to capture at least a portion of the image projected onto the surface.11-03-2011
20110267313OPTICAL TOUCH DISPLAY SYSTEM AND METHOD THEREOF - An optical touch display system and method thereof are disclosed. The optical touch display system comprises a displayer, a processor, a light emitting control module and a light sensing module. The displayer comprises a display panel and a backlight module capable of emitting a visual light and a non-visual light. The processor receives multiple frames and controls the displayer to show these frames. The light emitting control module, based on a timing interlace mode or a frame arrangement mode, controls the backlight module to emit the visual light or the non-visual light selectively. The light sensing module receives a non-visual signal on surface of the displayer, and the processor determines location of an object above the surface according to the non-visual signal.11-03-2011
20110267314OPTICAL TOUCH-SENSING DISPLAY MODULE - An optical touch-sensing display module including a liquid crystal display (LCD) module and at least two optical touch-sensing units is disclosed. The LCD module has a display surface and a side surface at periphery of the display surface. The LCD module includes a frame disposed at periphery of the display surface and the side surface. The frame has an opening for exposing the display surface. The optical touch-sensing units are disposed between the frame, the display surface and the side surface and define a sensing space upon the display surface. Each of the optical touch-sensing units has a sensing window facing to the sensing space, and senses an object in the sensing space through the sensing window.11-03-2011
20100128005TOUCH PANEL BY OPTICS UNIT SENSOR - There is provided the touch panel by optics unit sensor that realizes one system of touch panel in all view angles, that is, from a small touch region to a large touch region, prevents a scratch from affecting on the surface of the display panel forming the touch region, enables the uniform sensing operation, and an accurate calculation of the touch distance and improves the response speed. The touch panel is designed, without the coating layer for conduction which is needed in each conventional touch panel, and has high durability, high optical transmittance and high resolution.05-27-2010
20090167724Optical Touch Panel - An optical touch panel is provided, which may comprise a rectangular position-detecting surface; a plurality of light-emitting element pairs configured for emitting a plurality of light beams; two reflectors configured for reflecting the plurality of light beams emitted by the plurality of light-emitting element pairs; and a plurality of light-receiving element pairs configured for receiving the plurality of light beams emitted by the plurality of light-emitting element pairs. The optical touch panel further may comprise a control circuit configured for causing the light-emitting element pairs to emit the plurality of light beams in a predetermined order to scan the position-detecting surface, and further configured for causing the plurality of light-receiving element pairs to receive the plurality of light beams, thereby forming optical paths on the position-detecting surface in a grid pattern. The control circuit further may be configured for determining the coordinates of an object positioned on the position-detecting surface.07-02-2009
20080291177TOUCH CONTROLLED DISPLAY DEVICE - An exemplary touch controlled display device includes is provided. The touch controlled display device includes a touch screen, a light emitting diode (LED) array substrate, and a control unit electronically connected with the touch screen and the LED array substrate. The touch screen is configured for allowing a user to touch thereon to generate a touch point and generating an input signal associated with the location of the touch point. The LED array substrate includes a number of LED units and each of the LED units corresponds to a pixel element of the touch controlled display device. The control unit is configured for receiving the input signal from the touch screen, obtaining the location coordinates of the touch point and generating a command signal to control the on/off states of the one or more LED units corresponding to the touch point.11-27-2008
20120293460PHOTO SENSING DEVICE SUITABLE FOR OPTICAL TOUCH DISPLAY PANEL AND APPLICATIONS THEREOF - A photo sensing device suitable for an optical touch display panel and applications thereof are provided. The photo sensing device includes a photo sensing unit and a coupling unit. The photo sensing unit is used for sensing whether a touch event is happened/occurred or not, and accordingly outputting a judging signal. The coupling unit is coupled to the photo sensing unit, and is used for enhancing the sensitivity of the sensing unit, so as to increase a difference between the judging signal associated with occurrence of the touch event and the judging signal associated with non-occurrence of the touch event.11-22-2012
20120293462OPTICAL DISPLAY AND CONTROL ELEMENT AND METHOD OF OPTICALLY DETERMINING A POSITION - An optical display and control element comprises an at least partially transparent display screen, at least one light source for illuminating a rear side of the display screen, and at least one light sensor for detecting a temporal signal of the light scattered on the display screen. The light source is able to produce a time-variable light pattern while illuminating the rear side of the display screen. A control and processing unit is able to evaluate the temporal signal, detected by the light sensor, in combination with the time-variable light pattern and to determine a position of at least one object located on the display screen from this evaluation. The invention further relates to a method of optically determining the position of an object which is located on an at least partially transparent display screen of an optical display and control element.11-22-2012
20080278460Transmissive Body - An apparatus and method for transmitting, collimating and redirecting light from a point-like source to produce a collimated optical signal in a substantially planar form are provided. In one embodiment, the apparatus is manufactured as a unitary transmissive body comprising a collimation element and a redirection element, and optionally a transmissive element. In another embodiment, the apparatus is assembled from one or more components. The apparatus and method are useful for providing sensing light for an optical touch input device or for providing illumination for a display.11-13-2008
20080278459Display Device - A display device which can authenticate fingerprint without a fingerprint sensor device and can be prevented from large size or reduced the size. A display device (11-13-2008
20100277436Sensing System for a Touch Sensitive Device - A sensing system for sensing a touch input on a touch sensitive device, the system including: a sensing plane; a well-collimated light source for generating a plurality of light rays along one or more planes different from the sensing plane; and a reflecting means adjacent one edge of the sensing plane for transforming at least a subset of the light rays into substantially parallel light rays and redirecting the subset of light rays along the sensing plane, at least one of the light rays along the sensing plane being interruptable by the touch input thereby allowing the sensing system to determine a position coordinate of the touch input. A related method of sensing a touch input on a touch sensitive device is also provided.11-04-2010
20080211786DISPLAY DEVICE - A display device, includes: a touch panel which outputs a predetermined enable signal corresponding to an external pressure; a display panel which includes a light detector responding to external light and generating a predetermined electrical signal representing the position of the light; and a panel driver which forms an image corresponding to the electrical signal on the display panel if the enable signal is input.09-04-2008
20080259051DISPLAY DEVICE AND ELECTRONIC APPARATUS - The invention provides a display device including: a light source that emits a plurality of light-source lights having intensities different from one another at points in time different from one another from a back side opposite a display surface that is pointed by pointing means toward the display surface; a detecting unit that is provided at the back side and functions to detect a plurality of reflected lights, which are obtained as a result of reflection of the plurality of light-source lights by the pointing means; and an identifying unit that identifies the position of the pointing means on the basis of each of a plurality of third images by calculating a finite difference value between brightness data of a first image that is generated on the basis of one reflected light among the plurality of reflected lights and brightness data of each of a plurality of second images that is generated on the basis of a plurality of other reflected lights among the plurality of reflected lights, the above-mentioned plurality of other reflected lights having an intensity that differs from that of the above-mentioned one reflected light, and then by generating each of the plurality of third images on the basis of the corresponding one of the plurality of calculated finite difference values.10-23-2008
20080211787LIQUID CRYSTAL DISPLAY APPARATUS - A liquid crystal display apparatus includes a display panel configured to have a plurality of scanning lines for which liquid crystal display elements each containing an optical input device and a display pixel are arranged, respectively, a backlight configured to be arranged facing the display panel to illuminate the display panel, and a control part configured to control writing into the display pixel and reading of a detection signal of the optical input device, wherein the control part displays an external light detection image substantially shielding light from the backlight on the display pixels throughout a first period of a frame period, and displays a display image on the display pixels throughout a second period of the frame period.09-04-2008
20080303802Method and Device for User Interaction - The invention relates to a user interaction device (12-11-2008
20130215083SEPARATING AND SECURING OBJECTS SELECTED BY EACH OF MULTIPLE USERS IN A SURFACE DISPLAY COMPUTER SYSTEM - Separating and securing the input of any user to a multiuser surface display computer by storing a fingerprint of each of a plurality of users and sensing the fingerprint of a finger of a user touching, or adjacent to, the surface display. The sensed fingerprint is compared to stored fingerprints for a match and the identified (id) finger of a matched fingerprint is enabled to access the surface display and moved to draw an enclosure on the surface display and moved further to drag and drop a plurality of objects on the display into the enclosure. The enclosure and plurality of objects are then stored and subsequent access is limited to the fingerprint of said (id) finger touching said display.08-22-2013
20130120316DUAL MODE TOUCH SYSTEMS - An apparatus for detecting a pointer includes a waveguide and a touch surface over the waveguide on which pointer contacts are to be made. At least one reflecting device extends along a first side of the waveguide and touch surface. The reflecting device defines an optical path between the interior of the waveguide and the region of interest above the touch surface. At least one imaging device looks across the touch surface and into the waveguide. The imaging device captures images of the region of interest and within the waveguide including reflections from the reflecting device.05-16-2013
20130120317CONTROL DEVICE OF A MULTI-FUNCTIONAL SYSTEM FOR MOTOR VEHICLES - A control device of a multi-functional system for motor vehicles is provided. The control device may include a movable and touch-sensitive control element, an input unit electrically insulated from the control element, the input unit including a set of optical sensors adapted to detect at least one of motion of or touch action on the control element, a display unit adapted to represent information in list form with the information associated with control of the multi-functional system, a computing unit in data connection with the input unit and the display unit, the computing unit adapted to convert positional data associated with the control element or touch action on the control element into a corresponding position in a selection list of the display unit, and an actuatable switching unit coupled to the control element with the switching unit allowing selection of a list element.05-16-2013
20130120320TOUCH SCREEN AND MULTI-CHANNEL SAMPLING METHOD THEREOF - A touch screen and a multi-channel sampling method thereof are disclosed. The touch screen comprises infrared-emitting diodes, infrared-receiving diodes, a touch detection region, first-stage processing circuits, and a second-stage processing circuit. At least two infrared-receiving diodes receive infrared light emitted from the same infrared light-emitting diode simultaneously, and the at least two infrared-receiving diodes output the received signals to the second-stage processing circuit for processing after the first-stage processing circuits filter out interfering light signals. The touch screen and the multi-channel sampling method thereof according to the present invention can be used to increase the multi-channel sampling rate of the touch screen.05-16-2013
20090128519OPTICAL WAVEGUIDE DEVICE FOR TOUCH PANEL AND TOUCH PANEL USING THE SAME - An optical waveguide device for a touch panel, including: a body; a plurality of cores formed on a surface of the body; and an over-cladding layer formed on the surface of the body to cover the plurality of cores, in which the over-cladding layer includes an end portion which covers each of the end surfaces of the cores, and the end portion of the over-cladding layer is formed as a lens portion. The lens portion includes a surface formed as an arcuately curved surface in side view which bulges outwardly, in which a distance (L) from the end surface of the cores to the center of curvature of the arcuately curved surface and the radius (R) of curvature of the arcuately curved surface satisfy the following condition (a):05-21-2009
20090160824Sensory structure of touch panel - A two-dimensional sensory structure for the capacitive touch panel is provided. The provided two-dimensional sensory structure includes a substrate having plural first metal structures and second metal structures on a first surface thereof, a dot-like insulating layer located on the substrate and composed of plural insulating dots, and an electrode layer located on the dot-like insulating layer and composed of plural conductive traces. The insulating dots are each corresponding to the first metal structures respectively, and thereby a first portion of the conductive traces arranged along a first direction are electrically connected to each other, and the conductive traces that are arranged along a second direction are electrically insulated therefrom. The thickness of the touch panel according to the invention is effectively reduced.06-25-2009
20110205186Imaging Methods and Systems for Position Detection - A computing device, such as a desktop, laptop, tablet computer, a mobile device, or a computing device integrated into another device (e.g., an entertainment device for gaming, a television, an appliance, kiosk, vehicle, tool, etc.) is configured to determine user input commands from the location and/or movement of one or more objects in a space. The object(s) can be imaged using one or more optical sensors and the resulting position data can be interpreted in any number of ways to determine a command. During a first sampling iteration, a range of pixels can be identified from a location of a feature of the object, with the range used in sampling from the at least one imaging device during a second iteration based on the data sampled during the first iteration.08-25-2011
20110205189Stereo Optical Sensors for Resolving Multi-Touch in a Touch Detection System - An optical touch detection system including at least two stereo pairs of optical sensors, which are identify a set of potential points, and methods for determining which of the potential points are true touch points. The first pair of optical sensors is used to identify a first set of potential points and the second set of optical sensors is used to identify a second set of potential points. Potential point pairs are then compared as between the first and second sets of potential points, i.e., each potential point pair includes a potential point from the first set and a potential point from the second set. Each potential point pair is evaluated to determine the distance between its constituent potential points. The true touch points are identified by selecting the potential point pairs having the shortest distances between their constituent potential points. Using at least two pairs of optical sensors reduces the total number of potential point pairs that must be evaluated to determine the true touch points necessary computational analysis.08-25-2011
20110205188METHOD AND APPARATUS FOR DETECTING AND DIFFERENTIATING USERS OF A DEVICE - An apparatus for operator control of an in-vehicle system includes an interface device for receiving inputs for control of the in-vehicle system from an operator hand, the interface device including a control panel having a visual display screen. The apparatus further includes a sensing system adjacent the interface device including an optical proximity sensor having a single infrared light source, a first plurality of directionally sensitive light receivers for detecting a first reflected infrared light from the infrared light source that is reflected by the operator hand only when the operator hand approaches the optical proximity sensor near the interface device from a driver side of the vehicle and a second plurality of directionally sensitive light receivers for detecting a second reflected infrared light from the infrared light source that is reflected by the operator hand only when the operator hand approaches the optical proximity sensor near the interface device from a passenger side of the vehicle. A controller generates a user-specific menu on the visual display screen based upon the first and second plurality of directionally sensitive light receivers detecting respective first and second reflected infrared light from the infrared light source.08-25-2011
20110205187TOUCH PANEL DISPLAY APPARATUS AND DETECTION METHOD FOR USE IN THE SAME - Embodiments described herein are to provide a touch panel display apparatus which includes a horizontal row of light-emitting elements and a horizontal row of light-receiving elements arranged on horizontal sides of a display unit. The touch panel display apparatus further include a vertical row of light-emitting elements and a vertical row of light-receiving elements arranged on vertical sides of the display unit. The touch panel display apparatus further include a control unit which activates a first set of the light-emitting elements and the corresponding light-receiving elements when the touch pattern is disposed between the light-emitting elements and the corresponding light-receiving elements, and inactivate a second set of the light-emitting elements and the corresponding light-receiving elements when the touch pattern is not disposed between the light-emitting elements and the corresponding light-receiving elements.08-25-2011
20110205185Sensor Methods and Systems for Position Detection - A computing device, such as a desktop, laptop, tablet computer, a mobile device, or a computing device integrated into another device (e.g., an entertainment device for gaming, a television, an appliance, kiosk, vehicle, tool, etc.) is configured to determine user input commands from the location and/or movement of one or more objects in a space. The object(s) can be imaged using one or more optical sensors and the resulting position data can be interpreted in any number of ways to determine a command. Signal conditioning logic (or a programmable CPU) can be used to facilitate detection by performing at least some image processing in hardware before the image is provided by the imaging device, such as by a hardware-implemented ambient subtraction, infinite impulse response (IIR) or finite impulse response (FIR) filtering, background-tracker-based touch detection, or the like.08-25-2011
20090141003Apparatus and method for operating a symmetric cipher engine in cipher-block chaining mode - An optical touch screen apparatus and method for manufacturing an optical touch screen apparatus are disclosed. The optical touch screen apparatus may comprise a touch screen plate having at least one pair of grooves formed on a front surface thereof; at least one pair of circuit boards disposed on the front surface of the touch screen plate, wherein each of the grooves respectively partially receives each of the circuit boards; an infrared emitting device for emitting an infrared beam, wherein the infrared emitting device is mounted on the first of the circuit boards; and an infrared receiving device for receiving the infrared beam, wherein the infrared receiving device is mounted on the second of the circuit boards and in optical communication with the infrared emitting device.06-04-2009
20090141001DISPLAY APPARATUS, LIQUID CRYSTAL DISPLAY APPARATUS, POSITION DETECTION SYSTEM AND POSITION DETECTION METHOD - Backlight of a backlight device (06-04-2009
20090141000SYSTEM AND METHOD FOR PERFORMING OPTICAL NAVIGATION USING HORIZONTALLY ORIENTED IMAGING LENS - A system and method for performing optical navigation uses an imaging lens, which is positioned between a target surface and an image sensor array, that is orientated to be substantially horizontal with respect to the target surface such that the optical axis of the imaging lens is substantially perpendicular to the target surface.06-04-2009
20120068973Determining The Location Of An Object On A Touch Surface - An apparatus is operated to determine the location of at least one object on a touch surface (03-22-2012
20120068974Optical Position Detection Apparatus - An optical position detection apparatus includes a retroreflective member 03-22-2012
20120068972TOUCH DISPLAY APPARATUS AND OPERATION METHOD THEREOF - A touch display apparatus including a display unit, a light confinement element, at least one light emitting device, and at least one optical detector is provided. The light confinement element is disposed beside the display unit, and has first and second total internal reflection (TIR) surfaces, and a light incident surface connecting the first and second TIR surfaces. The light emitting device is disposed beside the light incident surface and capable of emitting a light beam which enters the light confinement element through the light incident surface. The first and second TIR surfaces are capable of repeatedly totally reflecting the light beam in the light confinement element, for confining the light beam between the first and second TIR surfaces. When a touch object contacts the first TIR surface, the TIR effect is spoiled, and the touch object reflects a part of the light beam to the optical detector.03-22-2012
20090184941Structure of an andio device - An image displaying device includes a housing accommodating a circuit board, a screen, and at least an optical trace detecting module. The optical trace detecting module has a light source and an image sensor for detecting movement of a user's finger thereon so as to generate and supply a corresponding moving signal to a micro control unit. The micro control unit generates a first control signal for adjusting or switching displayed images on the screen.07-23-2009
20090141002Touch panel display device - A touch panel display device includes a liquid crystal panel to display an image by regulating transmittance of light supplied from a back light unit, and a touch sensing part provided on upper edges of the liquid crystal panel in order to detect a position touched by a user or an object. The touch sensing part includes infrared lamps to generate and emit infrared light, infrared light reflecting tubes mounted with the infrared lamps, and image sensors to sense the infrared light output from the light output regions of the infrared light reflecting tubes. Each of the infrared light reflecting tubes has light output regions and non-output regions evenly formed at a surface facing an upper surface of the liquid crystal panel so that the infrared light emitted from the infrared lamps is evenly irradiated on the upper surface of the liquid crystal panel.06-04-2009
20090141004DISPLAY DEVICE AND METHOD FOR MANUFACTURING THE SAME - To provide an input device including a display screen which has an image display function and a text information input function by using a display portion in which a pixel includes an optical sensor. An optical sensor is provided in each pixel of the display portion in order to detect position information. A transistor of a pixel circuit in the display portion and the optical sensor are formed using a single crystal semiconductor layer. By using the single crystal semiconductor layer, there is no variation in characteristics among pixels, and position detection with high accuracy is realized. Moreover, the display portion is formed using a substrate which is a light-transmitting substrate such as a glass substrate provided with a single crystal semiconductor layer separated from a single crystal semiconductor substrate.06-04-2009
20090141006TOUCH SCREEN SYSTEM WITH LIGHT REFLECTION - The present invention discloses a touch screen system comprising LED infrared transceivers installed at appropriate positions on left and right sides of the screen respectively, and a transmitter end of the transceiver transmits LED infrared waves and spreads spherical waves all over the surface of the screen. If the surface of the screen receives an intrusion from a touch control element, the spherical waves will be interfered, interrupted and reflected, and the wave frequency of the reflection will be detected by the receiver end of the transceiver. After the receiver end has received a reflection signal, the position coordinates of the touch control element can be analyzed through the operation of a core logical unit. A display module is provided for showing the movement path of the touch control element in images or lines, so as to provide a touch screen with low manufacturing cost and long life expectancy.06-04-2009
20090141005OPTICAL WAVEGUIDE FOR TOUCH PANEL AND TOUCH PANEL USING THE SAME - A touch panel optical waveguide which obviates the need for positioning light receiving cores of the optical waveguide with respect to light emitting cores of the optical waveguide, and to provide a touch panel employing the optical waveguide. A projection (06-04-2009
20110221707DISPLAY DEVICE HAVING OPTICAL SENSOR - A plurality of pixel circuits are provided on a TFT-side substrate 09-15-2011
20090251439CONTACT TRACKING AND IDENTIFICATION MODULE FOR TOUCH SENSING - Apparatus and methods are disclosed for simultaneously tracking multiple finger and palm contacts as hands approach, touch, and slide across a proximity-sensing, multi-touch surface. Identification and classification of intuitive hand configurations and motions enables unprecedented integration of typing, resting, pointing, scrolling, 3D manipulation, and handwriting into a versatile, ergonomic computer input device.10-08-2009
20090213093Optical position sensor using retroreflection - An optical position sensing system includes a display surrounded by a bezel, which may have high performance prismatic retroreflective film applied to it. The prismatic film may have a plurality of metallized and canted cube corner, with cant angles of greater than 5 degrees. The system also includes least one position sensing component, including at least one radiation source and an optical sensor. An optical position sensing component may include a plurality of radiation source, to improve performance of more diffuse retroreflective film. The position of the radiation source(s) may be varied with respect to the aperture to achieve further performance enhancements. Supplemental radiation sources may be positioned around the bezel so as to provide supplemental backlighting. Each of the plurality of supplemental radiation sources can be individually activated and deactivated, so as to selectively provide said supplemental backlighting to selected areas within the bezel.08-27-2009
20090027357SYSTEM AND METHOD OF DETECTING CONTACT ON A DISPLAY - A system for detecting contact on a display is provided. The system comprises a planar medium associated with the display and includes at least one edge facet and opposing surfaces. The system also includes one or more optical sources operatively coupled to the at least one edge facet for transmitting an optical signal into the planar medium such that the transmitted optical signal is totally internally reflected between the at least one edge facet and opposing surfaces. An optical sensing device is positioned to substantially face at least a portion of the edge facet and adapted to detect at least one object contacting a first surface of the opposing surfaces. The optical sensing device is operative to detect a portion of the optical signal emitted from the first surface at a location corresponding to the object contacting the first surface.01-29-2009
20110221705TOUCH OBJECT AND PROXIMATE OBJECT SENSING APPARATUS BY SELECTIVELY RADIATING LIGHT - Provided is a touch object and proximate object sensing apparatus by selectively radiating a light. An object sensing apparatus may separately use a touch light source to sense a touch image generated by an object touching a light guide, and a hovering light source to sense a target image generated by an object proximate to the light guide. The light guide may emit, to an upper portion of the light guide, an invisible light radiated from the hovering light source to enhance a sensation of sensing the proximate object.09-15-2011
20110221704METHOD FOR DRIVING INPUT CIRCUIT AND METHOD FOR DRIVING INPUT-OUTPUT DEVICE - To reduce power consumption, included are a selection signal output circuit, a reset signal output circuit, and a photodetector circuit. The selection signal output circuit is for outputting a selection signal. The reset signal output circuit is for outputting a reset signal. The photodetector circuit is supplied with the reset signal and the selection signal, is brought into a reset state in accordance with the input reset signal, generates a voltage corresponding to the illuminance of incident light when light enters the photodetector circuit, and outputs the generated voltage as a data signal in accordance with the input selection signal. In a first period, the reset signal output circuit and the selection signal output circuit output the reset signal and the selection signal, respectively. In a second period, stopped are output of the reset signal from the reset signal output circuit and output of the selection signal from the selection signal output circuit.09-15-2011
20100103139TRACKING APPROACHING OR HOVERING OBJECTS FOR USER-INTERFACES - The claimed subject matter relates to an architecture that can utilize photo-sensors embedded in a substantially transparent layer of a UI display for tracking objects that approach or hover over the UI display. The photo-sensors can be configured to detect light of certain wavelengths (e.g., visible light, infrared light) that are propagated toward the UI display, while ignoring light emanating from the UI display when displaying content. Accordingly, by examining various characteristics of the incoming light such as intensity, the architecture can identify a location of a shadow incident upon the display caused by an approaching or hovering selector object blocking portions of incoming light. Additionally or alternatively, the architecture can identify a location of higher intensity for light emanating from the selector object.04-29-2010
20090167723Input devices - Methods and apparatus relating to input devices are described. In one embodiment, an optical or an infrared sensor may be used to detect rays focused by a lens. A touch location (e.g., associated with location of a finger, a pen, a surface contact (with a table or mouse pad, for example), etc.) may be determined based on the detected rays. Other embodiments are also disclosed.07-02-2009
20110227877Visual Simulation of Touch Pressure - The simulation of touch pressure on a touch-sensitive display is disclosed. In one disclosed embodiment, a touch pressure is simulated on a touch-sensitive display by detecting inputs corresponding to each of an untouched display and two or more measures of touch pressure, and displaying images on the display corresponding to the untouched display and each measure of touch pressure. In this manner, a user may be provided with a richer visual response to a touch-sensitive display input.09-22-2011
20110141063Detection system for approach recognition - A detection system for the approach recognition of a hand or arm movement in the direction a display or control unit. The detection takes place in two stages by way of long-range detection and close-range detection. The first stage detects using at least one optical or acoustic sensor.06-16-2011
20110141064Determining Touch Locations Using Disturbed Light - A system comprises a plurality of light sources configured to provide light beams to a waveguide layer of a touch-screen. At least one of the light beams is disturbed when an object touches the touch-screen at a touch point. The system also comprises a plurality of detectors, where at least one of the detectors is configured to detect the disturbed light. The system comprises control logic coupled to the at least one detector. The control logic determines a location of the touch point as a result of the at least one detector detecting the disturbed light. The plurality of light sources and plurality of detectors are contained within a source/detector layer. The source/detector layer is separated from the waveguide layer by a mirror layer comprising a plurality of mirrors that transfer light between the source/detector layer and the waveguide layer.06-16-2011
20110141061TOUCH PANEL SYSTEM - Provided is a touch panel system. The touch panel system includes: a light emitting module disposed on a portion other than the same plane as a screen structure and emitting light on a screen recognizing surface; and a image pickup module sensing a touch signal of the screen structure, wherein the system further includes a reflective module having at least one reflective mirror to allow the emitted by the light emitting module to be emitted onto the screen recognizing surface of the screen structure. Therefore, it is possible to implement a system of a thinner touch panel while maintaining a touch recognizing efficiency. Further, it is possible to efficiently recognize positions of two or more multi touch objects which are simultaneously inputted.06-16-2011
20110141062OPTICAL SENSING UNIT, DISPLAY MODULE AND DISPLAY DEVICE USING THE SAME - An optical sensing unit, a display module and a display device using the same, the optical sensing unit uses the surface of a flat display panel as a touch surface and includes an infrared sensor module provided at a corner of the flat display panel.06-16-2011
20130215084OPTICAL TOUCH-SENSITIVE DEVICE AND METHOD OF DETECTION OF TOUCH - The present invention relates to a method and a device for detecting touch, e.g. by a finger touching a touch-surface of the device. In particular the invention relates to detection of touch by means of influencing, by means of the touch, propagation of light within the touch-sensitive device and detecting resulting change of light arriving to at least one detector device of the touch-sensitive device. Three paths for light intersect (or at least substantially intersect) at a primary zone of intersection. Thus, three coordinates for a touch at the touch-surface may be provided and a redundancy of coordinates may be provided for a touch.08-22-2013
20090096767Touch-sensing display device and method for manufacturing the same - A display device and method for manufacturing the same are disclosed. The display device includes a first substrate, a second substrate, a touch-sensing element, and a liquid crystal. The first substrate has a first surface and a second surface thereon. The second substrate has a pixel array and is disposed on the second surface of the first substrate. The touch-sensing element locates on the first surface of the first substrate. Furthermore, the touch-sensing element includes a conductive layer, a patterned electrode, and a passivation layer. The patterned electrode is correspondingly located on the periphery of the first substrate, and electrically connected to the conductive layer. The passivation layer covers the conductive layer and the patterned electrode. In addition, the liquid crystal is disposed between the first substrate and the second substrate.04-16-2009
20090096768DISPLAY SYSTEM AND METHOD FOR DETECTING POINTED POSITION - At least two infrared light-emitting areas are displayed within a display screen of a liquid crystal display apparatus. The infrared light-emitting areas are areas for emitting light having a wavelength in the infrared region. Then, an image is captured by an operating device in the direction of a position pointed by the operating device. A position on the display screen that is pointed by the operating device is calculated based on the positions of the infrared light-emitting areas that are included in the captured image. This arrangement makes it possible to appropriately calculate the position on the display screen that is pointed by the operating device, independently of the distance between the operating device and the display screen of the liquid crystal display apparatus.04-16-2009
20110227878SEMICONDUCTOR DEVICE, METHOD FOR MANUFACTURING SAME, AND DISPLAY DEVICE USING SEMICONDUCTOR DEVICE - In a semiconductor device having a thin film transistor and a thin film diode on a single substrate, the characteristics required for each of the devices can be obtained. The semiconductor device includes: a thin film transistor supported by a substrate 09-22-2011
20110227876Interactive Display Device with Infrared Capture Unit - An interactive display (09-22-2011
20110227875ORGANIC LIGHT EMITTING DIODE DISPLAY AND TOUCH CONTROLLED DISPLAY DEVICE HAVING THE SAME - An organic light emitting diode display and touch controlled display device having the same are disclosed. The organic light emitting diode display includes: a display area including an organic light emitting layer emitting light, and a first electrode and a second electrode facing each other, the organic light emitting layer interposed between the first and second electrodes; and a transmission area adjacent to the display area, including a portion of the second electrode spaced away from the second electrode by a spacing area and a protruding portion on which the portion of the second electrode is seated, configured to transmit light irradiated from the outside through the spacing area.09-22-2011
20110227874TOUCH SENSING APPARATUS AND METHOD OF OPERATING THE SAME - A touch sensing apparatus is controlled to determine the position of one or more objects (09-22-2011
20110221708TWO-DIMENSIONAL SENSOR ARRAY, DISPLAY DEVICE, AND ELECTRONICS DEVICE - A display device according to the present invention includes a liquid crystal display panel in which a plurality of pixels are arranged in matrix, and an optical sensor circuit configured by a photodiode (09-15-2011
20090102815OPTICAL WAVEGUIDE FOR TOUCH PANEL AND TOUCH PANEL USING THE SAME - An optical waveguide for a touch panel and a touch panel using the same. A lens portion 04-23-2009
20090184943Displaying Information Interactively - An arrangement for displaying information on a display surface is provided, the arrangement including a computing unit and a projecting unit. The computing unit is capable of supplying a display control signal to the projecting unit to thereby cause the projecting unit to project a display image calculated by the computing unit onto the display surface. The arrangement further includes a detecting unit, the detecting unit being capable of detecting a pointing signal applied to the display surface by a user and of supplying, depending on the pointing signal, a pointing information to the computing unit. The computing unit can calculate the display image including at least one image unit, wherein at least one of the position, the size and of the shape of the at least one image unit is dependent on the pointing information.07-23-2009
20120105379COORDINATE RECOGNITION APPARATUS AND COORDINATE RECOGNITION METHOD - According to one embodiment, a coordinate recognition apparatus includes a coordinate input unit, an adjustment unit, a judgment unit, a scan control unit, and a recognition unit. The adjustment unit adjusts an offset voltage of a sensor amplifier that amplifies a sensor signal output from the light-receiving element. The judgment unit judges whether disturbance light received by the light-receiving element has an influence. The scan control unit sets the number of scans with the light beam to scan the coordinate input unit when the judgment unit judges that the disturbance light has an influence to be greater than the number of scans when the judgment unit judges that the disturbance light has no influence. The recognition unit recognizes the coordinates input by the coordinate input unit in accordance with a change of the sensor signal output from the light-receiving element.05-03-2012
20120105378INPUT APPARATUS AND METHOD OF CONTROLLING THE SAME - According to one embodiment, an input apparatus comprises an input detector, a vibration detector, a controller, and a sensitivity adjustment unit. The input detector detects an input by the blockage of a light beam to scan a scan region. The vibration detector detects a vibration equal to or more than a set sensitivity applied to the input detector. The controller stops the light beam scanning when the input detector detects no inputs for a given length of time. The controller restores the light beam scanning when the vibration detector detects a vibration. The sensitivity adjustment unit changes the sensitivity of the vibration detector to be weaker than the set sensitivity when the input detector detects no inputs and the vibration detector continuously detects vibrations after the controller has restored the light beam scanning.05-03-2012
20120105377APPARATUS AND METHOD FOR RECOGNIZING COORDINATES - According to one embodiment, a coordinate recognition apparatus includes a plurality of light-emitting devices, a plurality of light-receiving devices, and a controller. The light-emitting devices and the light-receiving devices are arranged in an array along X direction. The controller forms a plurality of groups of light paths each formed by a plurality of light paths parallel to one another in a plane including the light-emitting devices and the light-receiving devices such that an angle of the light paths varies from group to group, identifies positions p and l of each of the groups in the X direction of the light-emitting device and the light-receiving device corresponding to the light path that passes through the center of a light shield region, and calculates coordinates of the center of the light shield region in the plane based on the identified positions p and l of each of the groups.05-03-2012
20120105375ELECTRONIC DEVICE - An electronic device includes a housing; a touch surface exposed to the surface of the housing; a displacement detector; a rotational movement detector; a linear movement detector; a signal generator; and a control unit. The displacement detector detects a displacement of an object touching the touch surface. The rotational movement detector detects a rotational movement of the object based on the displacement. The linear movement detector detects a linear movement of the object based on the displacement. The signal generator generates an operation signal corresponding to the rotational movement and the linear movement. The control unit controls an operation to be performed based on the operation signal.05-03-2012
20120105373METHOD FOR DETECTING TOUCH STATUS OF SURFACE OF INPUT DEVICE AND INPUT DEVICE THEREOF - A method for detecting a touch status of a surface of an input device, comprising: utilizing a first two-dimension (2D) image sensor disposed at a first location for capturing a first captured image of an object on the surface; and outputting a plurality of first positions of the object relative to the surface respectively by analyzing horizontal lines of the first captured image.05-03-2012
20100156848OPTICAL WAVEGUIDE, OPTICAL WAVEGUIDE TYPE TOUCH PANEL AND METHOD OF MANUFACTURING THE OPTICAL WAVEGUIDE - A method of manufacturing an optical waveguide includes forming a core layer on a first clad layer, forming a second clad layer on the core layer, forming a first groove including at least one inclined surface in the second clad layer and the core layer to be in substantially parallel to and near one end of the second clad layer and one end of the core layer, the at least one inclined surface of the first groove having such an angle that the core layer is exposed when viewed above the second clad layer, forming a second groove including at least one inclined surface in the second clad layer on a inner side of the first groove, forming a separation groove in the clad layers and the core layer in a direction intersecting the first groove, and forming a plurality of cores intersecting the first groove.06-24-2010
20100265217OPTICAL TOUCH SYSTEM WITH DISPLAY SCREEN - An optical touch system includes a display screen having a contact surface, an infrared light source emitting infrared light to cover the contact surface, a linear infrared sensor having a sensing surface with a lengthwise direction thereof parallel to the contact surface, a processor, and a controller. The linear infrared sensor captures an image of the contact surface with an infrared portion representing a touch area of a contact object, the image having an aspect ratio greater than that of the contact surface. The processor determines the touch location of the contact object based on the aspect ratios of the image and the contact surface, the location of the infrared portion on the image, the area of the infrared portion and the area of the touch portion of the contact object on the contact surface. The controller executes an instruction according to the determined location of the contact object.10-21-2010
20120194478Electronic Device with None-touch Interface and None-touch Control Method - An electronic device with none-touch control interface includes at least an optical sensor each including a light emitter for generating a light signal, and a light receiver for detecting whether the light signal is shaded according to light intensity change of the light signal emitted from the light emitter, and a processor coupled to the optical sensor and used for generating a control command for electronic device control according to at least one of a time length, a sequence, and a time interval that the light signal is shaded when the light receiver detects that the light signal is shaded.08-02-2012
20120194479INPUT DEVICE AND ASSOCIATED METHOD - An input device for an electronic device includes a proximity detector and a light source. The light source transmits light to a sensing area, which is reflected back to the proximity detector in the presence of an object in the vicinity of the sensing area, such that the proximity detector can produce an output indicative of a distance of the object from the proximity detector to give rise to a control signal for controlling the device.08-02-2012
20100149133Display device having touch screen function - A display device has a display panel generating visible light and generating infrared rays; a plurality of detectors detecting a change in an intensity of the infrared rays generated by the display panel; and the plurality of detectors recognizing a touch applied to the display panel in dependence upon the change detected in the intensity of the infrared rays.06-17-2010
20100156849ELECTROPHORETIC DISPLAY DEVICE USING PHOTO SENSOR - The present disclosure relates to a touch-type electrophoretic display device using a photo sensor, and the construction thereof may be configured by including a display substrate including a switching element connected to a gate line and a data line intersected with the gate line, a pixel electrode electrically connected to the switching element, and a first and a second photo sensor elements having a different channel width and length, the first and the second photo sensor elements being connected to the gate line and the data line for sensing an amount of light; and an electrophoretic film including charged particles, the electrophoretic film being coupled to the display substrate.06-24-2010
20100156850TOUCH PANEL, DISPLAY DEVICE, AND ELECTRONIC DEVICE - It is an object to provide a touch panel with high precision, high-speed operation, and low power consumption, which is caused by reduction of power consumption in an A/D converter circuit is reduced. In the touch panel in which a photo sensor is included in a pixel and an A/D converter circuit is provided every one column or a plurality of columns of the pixels, a control signal of the A/D converter circuit is sequentially supplied by a shift register included in an ADC (A/D converter circuit) control circuit, and respective periods when the plurality of A/D converter circuits operates are not overlap with each other. Accordingly, the number of A/D converter circuits which operate at the same time is decreased, and instantaneous power consumption in the A/D converter circuit is decreased.06-24-2010
20100177062Light compensation method - The invention discloses a light compensation method applied in an optical touch system. The optical touch system includes a light emitting diode, an optical detector, and a reflector. The light emitting diode is used to illuminate toward the reflector. The reflector has a pattern. The optical detector is used to sense the illuminated reflector. The light compensation method of the invention provides a light compensation solution for overly brightness or light decay of the light emitting diode due to usage over a long period in the optical touch system.07-15-2010
20100259508OPTICAL WAVEGUIDE WITH PHOTOELECTRIC CONVERSION ELEMENT AND OPTICAL TOUCH PANEL - An optical waveguide with photoelectric conversion element includes an under-cladding layer and an over-cladding layer including a thick portion having a large thickness and a thin portion having a small thickness. The optical waveguide with photoelectric conversion element is bendable in a region including the thin portion in such a direction that the under-cladding layer faces inward. This makes it possible to arrange a photoelectric conversion element of each of the optical waveguides with photoelectric conversion element and its associated circuit on the back side of a display panel of an optical touch panel, thereby reducing the size of a frame surrounding a coordinate input region of the optical touch panel and the difference in level on the surface of the frame and its vicinity.10-14-2010
20100188367OPTICAL WAVEGUIDE WITH LIGHT EMITTING DEVICE AND OPTICAL TOUCH PANEL - In an optical waveguide 07-29-2010
20100182282TOUCH PANEL AND ELECTRONIC DEVICE - To provide a touch panel with reduced disturbance of display and with improved mechanical strength by suppressing variation in the space between a pair of substrates which form the touch panel even when in contact with an object to be detected. A pixel portion including a plurality of pixels is provided between a pair of substrates. Each pixel includes a photosensor portion which detects that the object to be detected is in contact with one of the pair of substrates, and a MEMS portion which generates a mechanical displacement in a direction perpendicular to the pair of substrates when a signal based on a detection result of the photosensor portion is input.07-22-2010
20100188369IMAGE DISPLAYING APPARATUS AND IMAGE DISPLAYING METHOD - An image displaying apparatus according to the present invention is characterized by comprising: a position detection unit which detects a position of an object on a screen of a display unit; an attribute detection unit which detects an attribute of the object; a data search unit which searches for, from a storage unit, data associated with the attribute detected by the attribute detection unit; and a display control unit which displays the data searched by the data search unit, on the basis of the position of the object detected by the position detection unit.07-29-2010
20100001978AMBIENT LIGHT INTERFERENCE REDUCTION FOR OPTICAL INPUT DEVICES - Methods and apparatus for preventing fluctuations in ambient light from affecting the optical input mechanism of a liquid crystal display device. In one embodiment, an independent light source is adapted to generate electromagnetic signals through the cover glass of the display device. When the user's finger is proximate to a certain region of the touch panel, the electromagnetic signals reflect off of the user's finger and back through the cover glass. One or more photosensors monitoring the presence of these reflected signals service the various regions on the touch panel where input may be detected. Thus, when the reflected signals are detected at a certain region, the user's finger may be assumed to be present.01-07-2010
20100259507OPTICAL TOUCH APPARATUS AND OPERATING METHOD THEREOF - An optical touch apparatus and operating method thereof are disclosed. The optical touch apparatus comprises an optical module, a light sensing module, and a processing module. The optical module and the light sensing module are set at a first side and an opposite second side of a surface of the optical touch apparatus respectively. The optical module receives a light source and uniformly emits a plurality of lights. When at least one of the plurality of lights is blocked by an object above the surface, the light sensing module generates a sensing result based on the condition of receiving the plurality of lights. The processing module determines a touch point location corresponding to the object on the surface based on the sensing result.10-14-2010
20100271334TOUCH DISPLAY SYSTEM WITH OPTICAL TOUCH DETECTOR - An exemplary touch display system includes a flexible touch screen, a prism, an infrared light source, an infrared image sensor, and a processor. The prism is substantially isosceles right-angled triangular shaped, with a first side surface thereof being disposed adjacent to but spaced apart from back surface of the touch screen by air, wherein when a touch is applied to the touch display surface at a touch position, the touch screen is bent at the touch position and contact the prism at a contact position corresponding to the touch position. The infrared light source and the infrared image sensor are arranged adjacent to and facing to a hypotenuse surface of the prism. The processor is configured for processing image signals from the image sensor and obtaining the contact position based on light intensities of the image signals, thereby obtaining the touch position on the touch display surface.10-28-2010
20130215085Controlling Method Applied to A Sensing System - A controlling method applied to a sensing system includes the following step. Whether a specific function is started is determined according to the amount of pixels of a first total pattern acquired by sensing a first object. In an embodiment of the present invention, the step of determining whether the specific function is started according to the amount of pixels of the total pattern is the step of determining whether the specific function is started according to the amount of pixels of the total pattern and the length of time to successively acquire the total pattern. Accordingly, it is more convenient for a user to use the sensing system having the said controlling method.08-22-2013
20130215086INFRARED SENSOR INTEGRATED IN A TOUCH PANEL - An infrared source is configured to illuminate the underside of one or more objects on or above a touchable surface of a touch panel. Infrared light reflected from the underside of the object(s) is detected by an infrared sensor integrated in the touch panel below the touchable surface.08-22-2013
20100188368DISPLAY APPARATUS - Touch screen capabilities are added to a color display (07-29-2010
20100182279DISPLAY SYSTEM HAVING OPTICAL COORDINATE INPUT DEVICE - In a display device having a coordinate input device in a display system, light beams emitted from all the plurality of light emitting devices are arranged in an X-Y matrix inside a rectangular coordinate input area. When light shielding signals are detected through a light receiving device in X direction and also through a light receiving device in Y direction, the optical coordinate input device obtains the position coordinate of an intersection of a line from the light receiving device in X direction and a line from the light receiving device in Y direction, and displays position information on the display screen in accordance with thus-obtained position coordinate.07-22-2010
20100225618IMAGE ANALYSIS DEVICE, IMAGE ANALYSIS METHOD, IMAGE SENSING DEVICE, AND STORAGE MEDIUM - A touch position detection device includes a light sensor-containing LCD which informs a user, in accordance with a result of analyzing an image captured by light sensors, that it is difficult to identify where a pointing body is located.09-09-2010
20100220077IMAGE INPUT DEVICE, IMAGE INPUT-OUTPUT DEVICE AND ELECTRONIC UNIT - An image input device capable of acquiring object information irrespective of usage conditions, is provided. The image input device includes a light source, a light source driving section, a first photo-detection element, a photo-detection-element driving section, and an image processing section. The light source driving section drives the light source so that ON period is shorter than OFF period. The photo-detection-element driving section drives the first photo-detection element so that read operations are performed after respective light reception periods which are same in length both in the ON period and in the OFF period. The image processing section generates a first difference image based on an ON image and an OFF image, and acquires the object information based on the first difference image. The ON/OFF images are acquired based on respective output signals from the first photo-detection element in the ON/OFF periods.09-02-2010
20100225617POSITION DETECTION DEVICE - A touch position detection device includes (i) infrared light sensors and visible light sensors which are sensitive to light of respective different wavelengths, and (ii) an external light intensity calculation section which calculates an estimated value serving as an index of external light intensity, which is intensity of light in the surroundings of a target subject. As such, the touch position detection device is capable of appropriately detecting a position of a figure of the target subject under a broad range of ambient light intensities.09-09-2010
20100225615TOUCH PANEL - An embodiment of the present invention provides a touch panel that enable data sensing with multi-gray scale and an electronic device. At least a first pixel including a first photosensor portion detecting light with a first color, a second pixel including a second photosensor portion detecting light with a second color, a first A/D converter performing A/D conversion on an output signal of the first photosensor portion, and a second A/D converter performing A/D conversion on an output signal of the second photosensor portion are included. The voltage resolution of the first A/D converter and the voltage resolution of the second A/D converter are different.09-09-2010
20100238135IMAGE SENSOR AND DISPLAY - An image sensor, for example for incorporation within an active matrix display, comprises an array of sensor elements 09-23-2010
20100238137Multi-telepointer, virtual object display device, and virtual object control method - A virtual object control method is provided. The virtual object control method includes selecting a gesture to control a virtual object on the basis of motion information of a virtual object control unit. The gesture is related to a user's action to operate the virtual object control unit, and appropriately selected so that a user can intuitively and remotely control the virtual object. Selection criteria may be varied depending on the motion information including at least one of a pointing position, the number of pointed to points, a moving type for the virtual object control unit, and a moving position for the virtual object control unit acquired based on the position information.09-23-2010
20100253650OPTICAL SENSOR FOR MEASURING A FORCE DISTRIBUTION - According to one aspect, the invention provides an optical sensor for measuring a force distribution, comprising a substrate; one or more light emitting sources and one or more detectors provided on the substrate, the detectors responsive to the light emitted by the sources; wherein a deformable opto-mechanical layer is provided on said substrate with light responsive properties depending on a deformation of the opto-mechanical layer.10-07-2010
20100225616DISPLAY DEVICE WITH POSITION DETECTING FUNCTION AND ELECTRONIC APPARATUS - A display device with a position detecting function includes: an optical position detecting device which includes a position detecting light source for alternately emitting position detecting infrared light having a light amount attenuated along a predetermined direction and position detecting infrared light having a light amount attenuated along a reverse direction of the predetermined direction, and a light receiving element for receiving the position detecting infrared light reflected by a target object inside a detection region, and which detects a position of the target object on the basis of a light amount detection result of the light receiving element; and an image creating device which includes an image display region of an electric optical panel in a region overlapped with the detection region, wherein the light receiving element is constituted by a semiconductor element formed on the electric optical panel.09-09-2010
20100253649OPTICAL TOUCH MODULE - An optical touch module is used for providing a touch space, and includes a substrate, a sensor, and a light guiding element. The substrate is located below the touch space, and the sensor is disposed on a surface of the substrate facing the touch space. The light guiding element is located at a corner of the touch space. The light guiding element includes a light incident surface facing the touch space, and a light exit surface facing the sensor. Therefore, by fabricating the sensor on the substrate below the touch space, the thickness of the optical touch module and the cost of the substrate can be reduced.10-07-2010
20100238139OPTICAL TOUCH SCREEN SYSTEMS USING WIDE LIGHT BEAMS - A touch screen system, including a screen, a plurality of light sources coupled with the screen, for emitting light, a plurality of photo diodes coupled with the screen, for detecting the light emitted by the light sources, and for identifying the location of a touch on the screen when an absence of the emitted light is detected, and a plurality of lenses coupled respectively with the plurality of light sources to generate wide beams of light over a portion of the screen wherein substantially connected areas of the screen are covered by neighboring wide beams.09-23-2010
20110057906POINTING DEVICES - A touch pad uses a plurality of optical mouse type sensors. The sensors are optimized for detection of motion along the predominant direction of a user's finger as the finger is moved around the touch pad. A first one of the sensors functions to optically sense motion in a first direction, while a second one of the sensors functions to optically sense motion in a second, different, direction. The first and second directions are oriented a closed, for example, circular, path.03-10-2011
20120194477INTERACTIVE HOLOGRAPHIC DISPLAY DEVICE - A display apparatus configured to produce an interactive three-dimensional holographic image is disclosed. The display apparatus can include one or more coherent light sources configured to produce one or more beams, based on obtained image data of an object to display, and a lens assembly configured to direct the one or more beams to form a holographic image of the object. The lens assembly can include a collimating lens and a lens capable of beam steering one or more beams, including a micro-lens assembly with at least one micro-lens configured to generate a plurality of beams associated with a plurality of desired viewing angles. One or more optical sensors can be configured to obtain information regarding whether an interactive device interrupts the one or more beams, and a processor unit can determine a location of the interactive device with respect to the holographic image.08-02-2012
20100253651INPUT DEVICE WITH DEFLECTABLE ELECTRODE - Devices and methods are provided that facilitate improved input device performance. The devices and methods utilize a set of sensor electrodes comprising at least one transmitter sensor electrode and at least one receiver sensor electrode that are capacitively coupled to form a transcapacitance for capacitively sensing input objects in a sensing region. A measure of the transcapacitance may be used to determine positional information for the input objects in the sensing region. In accordance with the various embodiments, the devices and methods additionally utilize at least one deflectable electrode, where the deflectable electrode is electrically floating. The deflectable electrode is configured to be deflectable toward the set of sensor electrodes, where the deflection causes a change in the transcapacitance.10-07-2010
20120139878TOUCH MODULE AND TOUCH DISPLAY APPARATUS - A touch module and a touch display apparatus are provided. The touch module includes an image capturing unit, a distance detection unit, and a calculation unit. The image capturing unit determines a touch angle according to a captured detection image. The distance detection unit includes a detection signal generator and a receiver. The detection signal generator supplies a scattered detection signal. The receiver receives the reflected detection signal and determines a first touch distance according to the detection signal. The calculation unit is coupled to the image capturing unit and the distance detection unit. The calculation unit calculates a touch position according to the touch angle and the first touch distance.06-07-2012
20120139876Light Sensing Circuit, Method Of Manufacturing The Same, And Optical Touch Panel Including The Light Sensing Circuit - A light sensing circuit using an oxide semiconductor transistor, a method of manufacturing the light sensing circuit, and an optical touch panel including the light sensing circuit. Because the light sensing circuit includes only one light sensor transistor and one switch transistor formed on the same substrate, a structure of the light sensing circuit is simplified. Furthermore, because the light sensor transistor and the switch transistor have the same structure, a method of manufacturing the light sensing circuit is also simplified. Also, since an optical touch panel or an image acquisition apparatus using the light sensing circuit uses the light sensing circuit having a simple structure and does not use a capacitor, the optical touch panel or the image acquisition apparatus may be made thinner and larger.06-07-2012
20120139875OPTICAL TOUCH MODULE CAPABLE OF INCREASING LIGHT EMITTING ANGLE OF LIGHT EMITTING UNIT - An optical touch module includes a screen and at least one optical positioning device disposed on the screen. The optical positioning device includes a case, at least one light emitting unit, a circuit board, a transparent diffusing part and an image capturing unit. The light emitting unit is disposed on case for emitting invisible light. The circuit board is electrically connected to the light emitting unit for controlling the light emitting unit. The transparent diffusing part is disposed at a light emitting side of the light emitting unit. A bar structure is formed on a light entrance surface of the transparent diffusing part for scattering the invisible light to be distributed over a touch surface of the screen. The image capturing unit is disposed on the case to capture an optical image for a touch object on the touch surface when the touch object is illuminated by the invisible light.06-07-2012
20100128006OPTICAL WAVEGUIDE AND OPTICAL TOUCH PANEL - An optical waveguide 05-27-2010
20130187890USER INTERFACE APPARATUS AND METHOD FOR 3D SPACE-TOUCH USING MULTIPLE IMAGING SENSORS - A user interface apparatus and method for 3D space-touch using multiple imaging sensors is provided to control an output display and provide a 3D input information without a separate input device, with an output display controller device analyzing a video data captured by the imaging sensors installed at one side and the other side of the output display, by the output display controller device generating an output display control signal and a mapping information and transmitting the signal and the mapping information to the output device if a user's motion is determined to be a motion of inputting a controlling signal (such as an act of double-clicking a part of the output display) corresponding to the output display control signal using the user's hand or a pointing stick (such as a ballpoint pen, a wood stick, etc.), thereby making users interested and providing users with convenience.07-25-2013
20110210946LIGHT-BASED TOUCH SCREEN USING ELONGATED LIGHT GUIDES - A touch screen including a housing, a display mounted in the housing, a plurality of collimating lenses mounted in the housing and arranged along a first edge of the display, a plurality of light pulse emitters mounted in the housing that are spaced apart from and serially transmit light pulses through the collimating lenses over the display, a light guide mounted in the housing along the edge of the display opposite the first edge, for receiving the light pulses, the light guide including a reflective strip that reflects light pulses to one end of the light guide, a light pulse receiver mounted in the housing near the one end of the light guide, for receiving the reflected light pulses, and a calculating unit, mounted in the housing and connected to the receiver, for determining a location of a pointer on the display that partially blocks light pulses transmitted by the emitters, based on outputs of the receiver.09-01-2011
20120194481TOUCH SCREEN SENSOR - A touch screen sensor includes a visible light transparent substrate and an electrically conductive micropattern disposed on or in the visible light transparent substrate. The micropattern includes a first region micropattern within a touch sensing area and a second region micropattern. The first region micropattern has a first sheet resistance value in a first direction, is visible light transparent, and has at least 90% open area. The second region micropattern has a second sheet resistance value in the first direction. The first sheet resistance value is different from the second sheet resistance value.08-02-2012
20090244034Computer input device and method for controlling direction of operation target using the same - A computer input device and a method for controlling a direction of an operated target using the same are described. The computer input device includes an optical touch control module, a motion look-up table, and look-up corresponding motion. The motion look-up table records a user's operations made on the optical touch control module and corresponding motions performed accordingly. The motion look-up is executed to record a finger touch area where a finger touches the optical touch control module within a certain time period, to look up the motion look-up table for the corresponding motion to be performed according to the finger touch area and the record about a previous touch area, and to perform the corresponding motion to control the direction of the operated target.10-01-2009
20130127784METHODS AND APPARATUSES FOR HIDING OPTICAL CONTRAST FEATURES - This disclosure provides systems, methods, and apparatuses for hiding optical contrast features. To reduce visibility of an elongated optical contrast feature, such as a wire on a transparent light guide, neighboring light-turning features in the light guide are “moved” relative to their location in a layout where they are physically uniformly distributed. This movement renders the local optical density in the region around the wire more equal to the optical density in other regions of the light guide. The movement of neighboring light-turning features occurs principally within a distance from the wire that is within the width of the line spread function of the human eye at a normal viewing distance. The uniformity of the local optical density is therefore increased, and the human eye does not perceive the wires as being separate structures. Thus, the wires can be “hidden” within a field of light-turning features.05-23-2013
20130127785OPTICAL TOUCH DISPLAY, A CALIBRATION APPARATUS AND A CALIBRATION METHOD THEREOF - An optical touch display, a calibration apparatus, and a calibration method thereof are disclosed. The calibration method is used for calibrating the optical touch display, and the optical touch display has a plurality of image detecting sensors. The calibration method includes the following steps: generating a plurality of calibration points; generating a plurality of representative calibration points from the plurality of calibration points; obtaining a first image position of each representative calibration point via the plurality of image detecting sensors; constructing a coordinate transformation mechanism for transforming the first image position into a first screen position; calculating a relative position between the representative calibration points and its neighboring calibration points; calculating a second image position of each calibration point based on the relative position; and calculating a second screen position by using the transformation mechanism and the second image position.05-23-2013
20130127786TOUCH DISPLAY APPARATUS AND METHOD OF DETERMINING TOUCH POSITION USING THE SAME - A touch display apparatus includes a first substrate, a second substrate, a light emitting part, a light receiving part and a light transmitting element. The second substrate faces the first substrate. The light emitting part is adjacent to a first side of the first substrate, and generates and emits light to the first substrate. The light receiving part is adjacent to a first side of the second substrate at a same side of the touch display apparatus as the first side of the first substrate, and receives light from the second substrate. The light transmitting element connects a second side of the first substrate opposing the first side of the first substrate to a second side of the second substrate opposing the first side of the second substrate.05-23-2013
20090073141ELECTRO-OPTICAL DEVICE, ELECTRONIC APPARATUS AND METHOD OF DETECTING INDICATING OBJECT - Provided is a device for driving first and second electrodes and an electro-optical element including a material having optical characteristics that vary with an applied voltage. The device includes: a driving unit which drives the electro-optical element between first and second driving states; a display unit which displays an image based on the optical characteristics of the electro-optical element; a pickup unit that outputs image data according to the amount of incident light; a first memory which fetches/stores the image data as reference image data; a second memory which fetches/stores the image data as target image data; a difference image data generating unit which generates difference image data from a difference between the reference and target image data; and a control unit which controls the write/read of the first and second memories such that the driving states corresponding to the reference image data and the target image data become equal.03-19-2009
20090153523PASSIVE TOUCH SYSTEM AND METHOD OF DETECTING USER INPUT - A method of tracking an object of interest preferably includes (i) acquiring a first image and a second image representing different viewpoints of the object of interest; (ii) processing the first image into a first image data set and the second image into a second image data set; (iii) processing the first image data set and the second image data set to generate a background data set associated with a background; (iv) generating a first difference map by determining differences between the first image data set and the background data set and a second difference map by determining differences between the second image data set and the background data set; (v) detecting a first relative position of the object of interest in the first difference map and a second relative position of the object of interest in the second difference map; and (vi) producing an absolute position of the object of interest from the first and second relative positions of the object of interest.06-18-2009
20110234542Methods and Systems Utilizing Multiple Wavelengths for Position Detection - A position detection system can utilize multiple optical responses to a detection scene, such as by using multiple different patterns of light for imaging a given detection scene. The multiple patterns can include a first pattern containing image data that can be used to separate reflected light from retroreflected light in a second pattern of light. This can be used to reduce errors, such as false detections due to directly-reflected light, and/or can be used for identification of objects in the touch detection scene when the objects themselves are optically configured to appear differently in different patterns of light.09-29-2011
20110032216INTERACTIVE INPUT SYSTEM AND ARM ASSEMBLY THEREFOR - An interactive input system comprises a display unit having a display surface, a bezel disposed around at least a portion of the periphery of a region of interest proximate at least a portion of said display surface and having an inwardly facing surface and an elongate arm assembly configured to be mounted to the display unit. The arm assembly supports imaging devices thereon and is longitudinally extendable to position the imaging devices at spaced locations relative to the display surface such that the fields of view of the imaging devices encompass the region of interest.02-10-2011
20110032214FRONT LIGHT BASED OPTICAL TOUCH SCREEN - Systems and methods, to integrate an optical touch screen with a display device comprising a front illumination system, are disclosed. Disclosed embodiments comprise a front illumination system, a display device further comprising a plurality of light-modulating elements (e.g. interferometric modulators), a plurality of reflectors and a plurality of sensor arrays. Light from the front illumination system not directed towards the display device is reflected by the reflectors towards the sensor arrays.02-10-2011
20110069038INTERACTIVE DISPLAY PANEL - An interactive display panel includes scan lines, first data lines, sub-pixels, photo-sensors and second data lines. The scan lines and the first data lines are intersected to define sub-pixel regions. Each of the sub-pixels is located in one of the sub-pixel regions and has a display region, and each of the sub-pixels is electrically connected with one of the scan lines and one of the first data lines respectively. The photo-sensors are located outside the display regions of the sub-pixels. The scan lines and the second data lines are intersected and electrically connected with the photo-sensors.03-24-2011
20090109193DETECTING AMBIENT LIGHT LEVELS IN A VISION SYSTEM - The detection of ambient light on an optical touch-sensitive device is disclosed. For example, one disclosed embodiment comprises capturing an image of at least a portion of a display screen with a camera located within the display device, and determined if ambient light in the image is at an acceptable level for display screen operation. Then, a visual representation is displayed representing whether the ambient light level is acceptable for display screen operation.04-30-2009
20090109194Touch Screen - The present invention provides the system design of the positioning analysis of a touch screen. It receives the signals from the wave sensor that employs the concept of the reflection of the light, sound, or supersonic, and the signals are calculated by the core logic circuit to obtain the position coordinate of an object. And then a display module is employed to show the moving path of the object in the manner of an image or line on a screen. The wave sensor may be implemented by a CMOS optical image sensor, infrared sensor, or supersonic sensor. The CMOS (Complementary metal oxide semiconductor) optical image sensor may additionally comprise fibers to transmit the optical wave to the CMOS sensor smoothly.04-30-2009
20100295822Connector of connecting light sensor and substrate and method of fabricating light sensor - A connector of connecting a light sensor and a substrate is utilized for rotating the light sensor so that the light-receiving direction of the light sensor is parallel with the substrate. When the connector is utilized in an optical touch system, the light sensor can be disposed on the substrate of the optical touch system by means of general manufacturing facilities of flat display panels. Meanwhile, the light-receiving direction of the light sensor is parallel with the substrate of the optical touch system.11-25-2010
20100295825POINTING INPUT DEVICE HAVING SHEET-LIKE LIGHT BEAM LAYER - A pointing input device includes a sheet-like light beam layer and a detector. The sheet-like light beam layer abuts a display screen and is distributed on a surface of a display screen, and includes plural light beams. The sheet-like light beam layer is generated by at least one light-generating module having a dot light source. The detector is for detecting a light spot composed of plural reflective beam when a physical object is intervened into the sheet-like light beam layer, so that a pointing input operation is performed on a specified position of the display screen corresponding to the light spot. Once the physical object is intervened into the sheet-like light beam layer, the light beams are sheltered by the physical object, so that the light spot with a reflective bright border is resulted from a touching action of the physical object.11-25-2010
20100134441STRUCTURE OF OPTIC TOUCH CONTROL SCREEN MODULE - An optic touch control screen module includes a plurality of frame members of various sizes and joint members that are combined to form a frame. Each of the frame members and the joint members forms a receiving chamber. Every two opposite ones of the circuit boards are provided with oppositely arranged and corresponding optic transmitting elements and optic receiving elements. Each circuit board has opposite ends each forming a female connector. A plurality of male connectors is provided and each has a structure having two faces forming male terminals. To assemble, the male connector is set between and engages with the female connectors of two adjacent circuit boards. Thus, damage to the circuit boards can be avoided.06-03-2010
20130135256ORGANIC LIGHT EMITTING DIODE DISPLAY - Provided is an organic light emitting diode display. An organic light emitting diode display includes: a touch panel that includes a first substrate, a first electrode disposed on the first substrate, a photosensor disposed on the first electrode, and a second electrode disposed on the photosensor; and a display panel that includes a second substrate, a thin film transistor disposed on the second substrate, a pixel electrode disposed on the thin film transistor, an emission layer disposed on the pixel electrode, a common electrode disposed on the emission layer, a passivation layer disposed on the common electrode, and a column spacer disposed on the passivation layer, wherein the display panel is disposed on the touch panel, and the column spacer and the second electrode face each other and are spaced apart from each other.05-30-2013
20130135260CAMERA-BASED MULTI-TOUCH INTERACTION AND ILLUMINATION SYSTEM AND METHOD - A method, system and apparatus is provided for controlling and interacting within an interaction volume and/or surface of a computer. The method, apparatus and system is optionally employed together with, or even be integrated into, data projectors of all types and its fixtures/stands, and used together with flat screens (LCD, plasma, OLED, rear-projection screen and so forth) to render such display systems interactive. The apparatus incorporates a camera covering the interaction area from either a very short distance or from a larger distance to determine the lateral positions (X, Y) and even capturing the pose of the finger(s), hand(s) or other interacting object(s), which optionally include the determination of “touch” and “hovering”.05-30-2013
20100302210Touch Sensing - A touch-screen device includes a radiation source, a waveguide configured to receive radiation emitted by the source and to cause some of the radiation to undergo total internal reflection within the waveguide, a pliable frustrating layer disposed relative to the waveguide to enable the frustrating layer to contact the waveguide when the frustrating layer is physically deformed, the frustrating layer being configured to cause frustration of the total internal reflection of the received radiation within the waveguide when the frustrating layer is physically deformed to contact the waveguide such that some of the received escapes from the waveguide at the contact point, an imaging sensor configured to detect some of the radiation that escapes from the waveguide, and a structure disposed relative to the frustrating layer, the structure configured to steer at least a portion of the radiation that escapes from the waveguide toward the imaging sensor.12-02-2010
20110128257TIME DOMAIN REFLECTOMETER TOUCH SCREEN SENSOR - TDR (time domain reflection) technology may be used in optical domain or in electrical domain. For electrical TDR, single layer ITO glass may form a transmission line as a base TDR touch sensor. When the touch sensor is paired, the existing internal metal line of the display device may be reused as a TDR sensor and the ITO glass may be removed. When touched, the TDR profile is changed dynamically from baseline to the particular profile due to its dynamic impedance profile change across the display screen. Likewise, for optical TDR touch sensing, 2 dimensional optical slab waveguide is used to carry OTDR signal. When touched, the profile is changed due to this perturbation mainly by evanescent field changes on that particular position.06-02-2011
20110128256LIGHT GUIDE APPARATUS AND OPTICAL TOUCH DISPLAY APPARATUS - A light guide apparatus is adapted to a touch display apparatus. The touch display apparatus has a display area. The light guide apparatus includes a plurality of light guide units and a plurality of light sources. The light guide units are disposed beside a first side of the display area. Each of the light guide units has a light incident surface, and a space is between each two adjacent light guide units. The light sources are disposed beside the light incident surfaces of the light guide units. Each of the light sources is capable of providing a beam. The beam is capable of entering the light guide unit through the light incident surface and is capable of being transmitted to an external environment from the light guide unit. An optical touch display apparatus is also provided.06-02-2011
20100302207Optical Touch Control Method and Apparatus Thereof - An optical touch control method and apparatus are disclosed. The touch control method is used to provide a shadow from an object in accordance with a light source, and to determine the touch time and the touch location of the object in the display according to a width variance of the shadow. By utilizing the touch control method, the optical touch control apparatus can be implemented in large sized displays without substantial increases in cost.12-02-2010
20100302208DEVICE AND METHOD FOR PERFORMING OPTICAL NAVIGATION WITHOUT USING LENSES - An optical navigation device and method for performing optical navigation uses an optically transparent flexible film, which is positioned over a sensor that includes an image sensor array, to allow the image sensor array to receive imaging light from a target surface that is produced in response to illumination light emitted into the target surface from a light source. The imaging light from the target surface is received at the image sensor array of the sensor to capture frames of image data of the target surface. The frames of image data are then compared to estimate relative displacements between the target surface and the image sensor array.12-02-2010
20110122099MULTIPLE-INPUT TOUCH PANEL AND METHOD FOR GESTURE RECOGNITION - A touch panel capable of recognizing at least one gesture and the method thereof are provided. The touch panel comprises: a first optical unit, comprising a first light emitting element and a first light receiving element, arranged at a first position of the touch panel; a first optical element arranged along a first edge of the touch panel for reflecting light; a second and a third optical element arranged along a second and a third edge of the touch panel, respectively, for retro-reflecting the light, the second edge being adjacent to both the third edge and the first edge; and a processing unit for recognizing the at least one gesture according to changes to distance and slope of possible touch points.05-26-2011
20110122098DISPLAY DEVICE - A purpose is to enable detection of an object in a display device including a display panel provided with photosensors when the object touches the display panel and when the object does not touch the display panel. A display device includes a display panel provided with photosensors. The display device has a function of detecting an object with the photosensor when the object touches the display panel and when the object does not touch thereto. The display device has a function of changing the sensitivity of the photosensor varies depending on whether the object touches the display panel.05-26-2011
20110122091METHODS AND APPARATUS FOR SENSING TOUCH EVENTS ON A DISPLAY - Methods and apparatus provide for a touch sensitive display, in which a transparent layer is disposed over a display layer; light is directed to propagate into and/or through the transparent layer; scattered light is measured in response to an object touching a surface the transparent layer and disturbing the propagation of the light therethrough; and one or more positions at which the object touches the transparent layer are computed based on signals obtained by the step of measuring the scattered light.05-26-2011
20110122097OPTICAL TOUCH APPARATUS - An optical touch apparatus includes a light source capable of emitting a beam, a light guide unit disposed in a transmission path of the beam, and an optical detector. The light guide unit includes a light guide body having a first surface, a second surface, a third surface, a fourth surface, and a scattering structure disposed on at least one of the second surface, the third surface, and the fourth surface. The beam is capable of entering the light guide body, being scattered to the first surface by the scattering structure, and then being transmitted to a sensing space. The scattering structure includes separated scattering patterns including a resin composition and scattering particles dispersed in the resin composition. The ratio of the weight percentage of the scattering particles to the weight percentage of the resin composition is equal to or greater than 0.1.05-26-2011
20110122095TOUCH DISPLAY APPARATUS AND BACKLIGHT MODULE - A touch display apparatus including a light guide plate, a light emitting module, a display panel, a plurality of prism structures, an image transmission unit, and an image detector is provided. The light guide plate has a first surface, a second surface opposite to the first surface, and a light incident surface connecting the first surface and the second surface. The light emitting module includes at least one visible light source and at least one invisible light source. The prism structures are disposed between the first surface and the display panel. The image transmission unit includes a wedge portion and a light guide portion. The wedge portion is disposed between the prism structures and the display panel. The image detector is disposed beside the light guide portion for receiving the invisible light beam from the light guide portion. A backlight module is also provided.05-26-2011
20110122094OPTICAL TOUCH APPARATUS AND OPTICAL TOUCH DISPLAY APPARATUS - An optical touch apparatus includes a light source, light guide unit, and optical detector. The light source next to the display area emits a beam. The light guide unit next to the display area and in the transmission path of the beam includes a light guide body and a Lambertian scattering structure. The light guide body has first, second, third, fourth, and light incident surfaces. The beam enters the light guide body through the light incident surface and is transmitted from the first surface to a sensing space in front of the display area. The Lambertian scattering structure is disposed on at least one of the second, third, and fourth surfaces for scattering the beam to the first surface. The optical detector next to the display area senses a change in light intensity of the beam in the sensing space. An optical touch display apparatus is also provided.05-26-2011
20110248962INFORMATION PRESENTING DEVICE, TACTILE SENSE PRESENTING METHOD, AND PROGRAM - An information presenting device of present invention includes a conductive layer to which an AC voltage is applied, an insulating layer for covering the conductive layer and presenting a tactile sense when a part of a body of a user set to a ground potential is in contact with the insulating layer.10-13-2011
20110001727Optical Touch Display - An optical touch display includes a display panel, a light source module, and a sensing module. The display panel has a first edge, a second edge, a third edge and a fourth edge. The light source module is disposed beside the first edge and the second edge of the display panel. The light source module is configure for providing a first parallel light and a second parallel light passing through above a display surface of the display panel. The first parallel light passes from the first edge of the display panel through the third edge of the display panel, and the second parallel light passes from the second edge of the display panel through the fourth edge of the display panel. The sensing module is disposed beside the third edge and the fourth edge of the display panel for sensing the first parallel light and the second parallel light. The optical touch display has advantageous of high reliability and low cost.01-06-2011
20110128255LIGHT SOURCE MODULE AND OPTICAL TOUCH APPARATUS - A light source module includes a light source, a light guide unit, an opaque reflective element, a reflective unit, and a patterned light-absorbing element. The light guide unit has first and second surfaces, a light incident surface, and third and fourth surfaces. A beam from the light source enters the light guide unit through the light incident surface and is transmitted to outside through the first surface. The opaque reflective element covers a portion of the first surface adjacent to the light incident surface. The patterned light-absorbing element is disposed on a surface of the reflective unit. A portion of the patterned light-absorbing element is between a portion of the third surface adjacent to the light incident surface and the reflective unit. Another portion of the patterned light-absorbing element is between a portion of the fourth surface adjacent to the light incident surface and the reflective unit.06-02-2011
20110109591TOUCH PANEL AND DRIVING METHOD OF TOUCH PANEL - Disclosed is a touch panel including a plurality of pixels each including a display element and a photosensor. The display element includes a transistor having an oxide semiconductor layer. The photosensor includes a photodiode, a first transistor, and a second transistor, and the first and second transistors include an oxide semiconductor layer. A driving method of the touch panel is also disclosed by which high-speed imaging is realized.05-12-2011
20110001728POINTING DEVICE AND DISPLAY DEVICE USING THE SAME - A pointing device has a photosensor (01-06-2011
20110007033LIQUID CRYSTAL DISPLAY - According to an embodiment, a liquid crystal display comprises a backlight unit, a liquid crystal panel assembly placed on the backlight unit, a reflector frame placed in the periphery of the liquid crystal panel assembly and including a reflector, a top case coupling the backlight unit, the liquid crystal panel assembly, and the reflector frame, to each other, and an optical sensor camera placed in at least one corner of the top case.01-13-2011
20130147766LASER OPTICAL TOUCH CONTROL MODULE ANALOG-TO-DIGITAL CONVERSION SYSTEM AND METHOD OF THE SAME - A laser optical touch control module includes a light emitting part with a laser light source and a light receiving part with a position sensor. A laser beam is emitted from the laser light source and reflected by a wide angle optical element. Thus a light fan of the reflected light is larger than 90 degrees to form a wide angle linear light beam. The position of a touch control widget is obtained by a sensor of the light receiving part that detects the linear light beam blocked and reflected by the touch control widget. An analog-to-digital conversion system includes a variable reference level generator that calculates to generate a variable reference level according to different variances. Then the sensor output data is converted into a digital signal based on the reference voltage level by a digital comparator and the digital signal is output to a processor.06-13-2013
20110043489DISPLAY DEVICE AND CONTROL METHOD - A display device is provided which is capable of specifying a touch operation direction when a touch operation is detected. A display device includes a photosensor built-in LCD for capturing, in an image, a touch operation performed onto a display screen, from inside a display unit; and a touch operation direction determining unit for determining a direction of the touch operation performed onto the touch location, based on the captured image.02-24-2011
20110001726AUTOMATICALLY CONFIGURABLE HUMAN MACHINE INTERFACE SYSTEM WITH INTERCHANGEABLE USER INTERFACE PANELS - A human machine interface system is disclosed. The human machine interface system includes a sensing portion adapted to detect a presence and a location of a touch, a user input portion releasably coupled to the sensing portion, wherein the user input portion includes an indicia representing a control function associated with the sensing portion, and a controller in communication with the sensing portion for configuring the control function associated with the sensing portion based upon the user input portion.01-06-2011
20110109592DISPLAY DEVICE - The display device has a display panel where a photosensor and a transistor including an oxide semiconductor layer are arranged. The display device detects a shadow of the object, which is projected on the display panel when the object approaches the display panel and blocks ambient light, with a photosensor, whereby a position or motion of the object is detected. Even when the object is not in contact with the display panel, the object can be detected.05-12-2011
20110242055COMPOSITE TOUCH SCREEN PANEL - A composite touch screen panel is applied to an electronic device. The touch screen panel includes a display module configured to output data and a spatial touch panel disposed at a top of the display module. The composite touch screen panel also includes an Acoustic Pulse Recognition (APR) panel arranged to overlap at a top of the spatial touch panel. The composite touch screen panel further includes a controller configured to sense a touch position sensed in the spatial touch panel and APR panel and perform a corresponding function of the device. The composite touch screen panel thereby integrates a spatial touch panel and an APR panel to exclude an existing silver (Ag) line and signal line, and maximizes a space utilization of a panel. Thus, the composite touch screen panel is capable of enabling a smooth performance of a precise touch and a long key function and drag operation.10-06-2011
20110025646EXTENDED INFRARED-SOURCED MULTI-TOUCH SCREEN - This invention provides an extended infrared-sourced multi-touch screen, comprising: a display module; at least an infrared (IR) source set in adjacent to a display module as the light source of the multi-touch screen; at least a beam expander optical apparatus being responsive to the at least an IR source to form an IR flat-field line pattern; at least an IR receiver set corresponding to said at least a beam expander optical apparatus to receive IR light emitted by the at least an IR source and to receive IR light from an object when said display module being touched; and a positioning module being responsive to said at least an infrared receiver to process coordinate positioning after the touch action is detected by the at least an IR receiver.02-03-2011
20110025647Display Filter And Display Device Having The Same - A display filter functions not only to block unnecessary radiation emitted from a display device but also to allow Infrared (NIR) radiation emitted from the display device to be used as a user interface signal. The display filter includes a near-infrared radiation blocking layer which absorbs near-infrared radiation emitted from the display device. The near-infrared radiation blocking layer contains 1.5% by weight of a di-immonium-based colorant that absorbs the near-infrared radiation.02-03-2011
20120200533SYSTEM WITH OPTICAL SENSOR FOR DETECTING USER INPUT - A light-based input device may be based on a wedge-shaped light-guide structure. Light may be introduced into the interior of the light-guide structure from a light source and corresponding reflected light exiting the light-guide structure may be measured using a light detector such as an image sensor. The location at which a user places an object in contact with an upper surface of the light-guide structure may be detected by analyzing the pattern of reflected light that exits the light-guide structure. Multiple layers of light-guide structures may be separated from each other by opaque material such as plastic so that the device can determine the direction in which the object is traversing the light-guide layers. A light-based input device may be implemented using free-space light beams that are interrupted by the user. Keys may be provided in a light-based input device by movably mounting contact pads to a light-guide structure.08-09-2012
20110037732DETECTING DEVICE, DISPLAY DEVICE, AND OBJECT PROXIMITY DISTANCE MEASURING METHOD - A detecting device includes: an optical sensor array having light reception anisotropy; a detection driving section configured to drive the optical sensor array, picking up an image of a detected object, and generate a plurality of different detection images on a basis of the light reception anisotropy; and a height detecting section configured to receive the plurality of detection images input to the height detecting section, and detect a distance (height) from a sensor light receiving surface of the optical sensor array to the detected object on a basis of magnitude of a positional displacement occurring due to difference in the light reception anisotropy in image parts corresponding to one of a shadow and a reflection of the detected object, the image parts being included in the plurality of input detection images.02-17-2011
20110043485SCANNING OF A TOUCH SCREEN - A user interface for receiving input commands in a mobile terminal includes a display device (D) for presenting visual information. Arrays of light sources (02-24-2011
20110043488METHOD FOR DRIVING TOUCH PANEL - A touch panel includes a plurality of pixels each of which is provided with a photo sensor including a photodiode, a first transistor, and a second transistor. Each pixel performs first operation in which a potential of a photodiode reset signal line which is electrically connected to the photodiode is set so that a forward bias is applied to the photodiode, second operation in which a potential of a gate of the first transistor is changed by a photocurrent of the photodiode, and third operation in which a potential of a gate of the second transistor is changed and the photo sensor output signal line and a photo sensor reference signal line are brought into conduction through the first transistor and the second transistor so that the potential of the photo sensor output signal line is changed in accordance with the photocurrent.02-24-2011
20110043487ORGANIC LIGHT EMITTING DIODE TOUCH DISPLAY - An OLED display is proposed. The OLED display includes a gate driver for generating a scanning signal, a source driver for generating a data signal, and a plurality of cells arranged in an array. Each cell includes a first transistor for delivering the data signal when receiving the scanning signal, a second transistor for generating a driving current based on a voltage difference between a first supply voltage signal and the data signal, a storage capacitor coupled between the first transistor and an output end of the driving circuit, for storing the data signal, an organic light emitting diode for generating light based on the driving current, an infrared emitting layer for producing infrared ray, and an infrared sensitive layer for sensing the infrared ray reflected by an object.02-24-2011
20110043484Apparatus for detecting a touching position on a flat panel display and a method thereof - This invention provides an apparatus for detecting a touching position on a flat panel display, including a display panel for displaying text and picture information, an electrically-controlled swing element with the angle of swing thereof being controlled by an electrically-driven actuator, a light source with a light beam thereof being reflected onto a display plane of the display panel or an upper or lower plane proximate to the display plane by the electrically-controlled swing element, an optical system with the optical axis thereof being parallel to the display plane, and a photo-sensing element disposed at an image plane of the optical system. A one-dimensional position of a touching point on the display panel is obtained from the photo-sensing element. Another one-dimensional position of the touching point is obtained from the said one-dimensional position and the angle of swing of the electrically-controlled swing element.02-24-2011
20110115750CONTROL SURFACE FOR A DATA PROCESSING SYSTEM - The invention relates to an optical-signal based control surface for a data processing system, said surface being designed as a planar optical fiber, on which photoelectric sensors are provided, the measured signals of which are used to deduce the position of a light signal striking the control surface and said position being associated with a processing mark in the data processing system. A layer having photoluminescent properties is in contact with at least one layer of the planar optical fiber. The light of the light beam shining on the control surface is converted into longer-wave light by way of photoluminescence, said light being coupled into the waveguide, diffusing therein, and being measured by the photoelectric sensors.05-19-2011
20110115745INTERACTIVE DISPLAY SYSTEM WITH CONTACT GEOMETRY INTERFACE - An interactive display system with a contact geometry interface is disclosed. The interactive display system may include a multi-touch display, a touch detection system configured to detect a touch input on the multi-touch display and to generate contact geometry for a contact region of the touch input, and an application programming interface executed on a processor of the interactive display system. The application programming interface may be configured to receive the contact geometry and to send the contact geometry to a requesting application program for application-level processing. Further, the application programming interface may be configured to receive from the application program a display command based on the application level-processing. The application programming interface may be configured to send the display command to the multi-touch display to adjust a display of a graphical element on the multi-touch display.05-19-2011
20110115747INFRARED VISION WITH LIQUID CRYSTAL DISPLAY DEVICE - Various embodiments related to infrared vision for a liquid crystal display (LCD) device are disclosed herein. For example, one disclosed embodiment provides a display system, comprising an LCD device and a display backlight configured to illuminate the LCD device by directing visible light toward an interior surface of the LCD device. The display system further comprises a wavelength-selective reflector disposed between the display backlight and the LCD device and having a smooth surface facing the interior surface of the LCD device, where the wavelength-selective reflector has a wavelength-selective coating configured to cause incident visible light from the display backlight to be transmitted through the wavelength-selective reflector to the LCD device, and cause incident infrared light reflected from an object on or near an exterior surface of the LCD device to be reflected off of the wavelength-selective reflector and directed to an infrared vision subsystem.05-19-2011
20100171724EMBEDDED TYPE INDUCTIVE INPUT DISPLAY DEVICE CAPABLE OF INCREASING APERTURE RATIO - An embedded type inductive input display device capable of increasing aperture ratios, that is realized through parallel-connecting at least two sensing devices of adjacent pixels separated by a gate line, and said sensing devices are connected to a switch transistor, such that said switch transistor is under control of said gate line, and sensor signals output by said sensing devices are transmitted to a read line for detecting touch-control events and positions. As such, the size of said sensing device utilized can be reduced, hereby effectively increasing aperture ratio of a panel, while maintaining a same magnitude of said sensor signals.07-08-2010
20110115749MULTI-TOUCH AND PROXIMATE OBJECT SENSING APPARATUS USING SENSING ARRAY - A multi-touch and proximate object sensing apparatus using a sensing array is provided. The multi-touch and proximate object sensing apparatus may sense a touch image or a target image by sensing an invisible light which is projected to a diffuser through the sensing array. Also, the multi-touch and proximate object sensing apparatus may display an image on a display panel by controlling a location of the sensing array and a visible light source, without a backlight unit.05-19-2011
20110115746METHOD FOR DETERMINING THE LOCATION OF A POINTER IN A POINTER INPUT REGION, AND INTERACTIVE INPUT SYSTEM EXECUTING THE METHOD - An interactive input system comprises a touch surface, and imaging system associated with the touch surface and processing structure. The imaging system comprises an optical sensor array that spans at least a portion of the area of the touch surface, and the processing structure communicates with the imaging system and analyzes images received by the imaging system to determine whether at least one pointer is near to the touch surface and the location of the at least one pointer in respect of the touch surface based at least in part on the edge sharpness of the at least one pointer.05-19-2011
20110080374OPTICAL TOUCH APPARATUS, OPTICAL TOUCH DISPLAY APPARATUS, AND LIGHT SOURCE MODULE - An optical touch apparatus includes at least one light source, at least one light guide unit, at least one optical detector, and a light reducing structure. The light source is disposed beside a display area of a display and capable of providing a light beam. The light guide unit is disposed beside the display area and in a transmission path of the light beam. The light guide unit has a first surface, a second surface, and a light incident surface. The light beam is capable of entering the light guide unit through the light incident surface and being transmitted to a sensing space in front of the display area through the first surface. The optical detector is disposed beside the display area. The light reducing structure covers a portion of the first surface adjacent to the light incident surface.04-07-2011
20100164906DISPLAY PANEL, MODULE, AND ELECTRONIC DEVICE - A display panel, ensuring high photo-detection accuracy in a region near a frame area, is provided. The display panel includes: image display elements disposed in an effective display area of a display screen; a light-shielding layer disposed in a frame area around the effective display area; and photo-detection elements disposed in the effective display area or in both of the effective display area and the frame area. The photo-detection elements detect the invisible light. The light-shielding layer transmits invisible light, while shields visible light.07-01-2010
20110210945PROJECTOR - Provided are: a projection unit that projects an image displayed on an image formation region of a display unit, and projects an icon displayed on a non-image formation region other than the image formation region, onto a projection surface; an imaging unit that images a region that includes the icon on the projection surface; a detection unit that detects the selection of the region that includes the icon, based on imaging data output from the imaging unit; and a processing unit that, when the selection of the region that includes the icon is detected by the detection unit, performs processing indicated by the icon included in the selected region.09-01-2011
20110122093DISPLAY APPARATUS AND METHOD FOR CALIBRATING A TOUCH SYSTEM - A display apparatus and method for calibrating a touch system are provided, the display apparatus including: a display panel which displays an image; an image processor which processes an image displayed on the display panel; a light source unit provided on the display panel and which emits light; a camera unit which photographs an image to detect a touch position by a user on the display panel and a calibration image of light emitted by the light source unit; and a controller which controls the image processor to process an image on the basis of the touch position by the user on the image taken by the camera unit and calibrating the touch position by the user on the basis of a position of the light on the calibration image taken by the camera unit.05-26-2011
20110122092ELECTRONIC DEVICE WITH OPTICAL TOUCH MODULE - An electronic device with an optical touch module is presented. A touch pad is disposed on the electronic device and at least one light transmission element is disposed on at least one side of the touch pad. The touch pad has a sensing area and senses a moving track direction of an object on the sensing area. Therefore, the touch pad, according to the moving track direction of the object, activates a light source to irradiate to the light transmission element corresponding to the moving track direction, such that the light transmission element illuminates on at least one side of the touch pad, thus achieving the effect of direction indication with light sources.05-26-2011
20110074738Touch Detection Sensing Apparatus - A touch detection sensing apparatus is disclosed, which comprises: at least one image capturing device, at least one reflection mirror and an image processing circuit. The at least one image capturing device is used to capture an image of a touch object in a detected screen and an image of a virtual image of the touch object in the at least one reflection mirror. The image processing circuit can calculate a position of the touch object based on the image of the touch object and the image of the virtual image of the touch object in a reflection mirror captured by an image capturing device.03-31-2011
20090219261Touch-Sensitive Illuminated Display Apparatus and Method of Operation Thereof - A touch-sensitive system, and apparatus, and method of operation of the apparatus, are provided. In one embodiment, the apparatus includes a light source module configured to emit light; and a deformable waveguide coupled to the light source module and configured to transmit the light or a deflected version of the light at a situs at which pressure external to the deformable waveguide is applied. The deformable waveguide may also be illuminated by the light. The apparatus may also include one or more sensors configured to detect information indicative of the light or the deflected version of the light at the situs, and output a signal in response to the detected information.09-03-2009
20110084938TOUCH DETECTION APPARATUS AND TOUCH POINT DETECTION METHOD - A touch detection apparatus is provided, in which a touch panel is implemented with four surrounding edges. Three of the edges are embedded with retro-reflection materials. Light sources and pinholes are deployed on both corners of the touch panel, allowing reflections from the three edges to be projected on light sensors through the pinhole. The images projected on the light sensors are analyzed to determine coordinates of one or more contact points on the touch panel.04-14-2011
20110084939INFRARED TOUCHSCREEN ELECTRONICS - Touchscreen electronics for detecting touches on a display screen broadly comprises a plurality of transmitters, a plurality of receivers, and a controller. Each transmitter may transmit at least one beam across the display screen, wherein the beam may be switched on and off in a repeated pattern. The receivers may detect the beams from the transmitters, and each receiver may generate an “on” value that corresponds to the beam being switched on and an “off” value that corresponds to the beam being switched off. The controller communicates with the transmitters and the receivers and may be configured to determine that a touch has occurred when the “on” value generated by one of the receivers transitions in a sequence from greater than an upper level to less than a lower level.04-14-2011
20100013796LIGHT SENSITIVE DISPLAY WITH OBJECT DETECTION CALIBRATION - A system comprising a stack of layers configured to display an image and including multiple elements configured to sense light. The system is configured to obtain a first reference image based on output from the multiple elements in a dark lighting condition associated with the system, and calibrate object detection based on output from the multiple elements using the obtained reference image. Additionally, a system comprising a display having a stack of layers configured to display an image and including a first and second set of elements. Each of the elements in the first set is configured to sense light, and each of the elements in the second set is configured to sense a dark current. The system is configured to perform object detection based on output from the elements in the first set, and calibrate the object detection based on output from the elements in the second set.01-21-2010
20090322706INFORMATION DISPLAY WITH OPTICAL DATA CAPTURE - Systems, devices, and/or methods that facilitate information display with optical data capture are presented. A display surface comprises optically selectable materials and/or contact transparent materials. The disclosed subject matter facilitates displaying information on a surface and collecting optical information about objects interacting with the display surface. The collected optical data, at least in part, is used in determinations related to updating display information. Additional sensors can be incorporated into the system to provide additional information that can be employed in determinations relating to updating display information.12-31-2009
20090322707Software Based Touchscreen - A software touchscreen displayed on start up for a LAN for an automated light. The software touchscreen is displayed by the software on initial startup, and later, after the initial startup, the same touchscreen is used for controlling the light.12-31-2009
20090322708Optical Touch Panel Having SMT Components As Optical Gates - An optical touch panel and corresponding method are disclosed. The optical touch panel may comprise a rectangular position-detecting surface; a frame-shaped circuit board surrounding the rectangular position-detecting surface; a plurality of light-emitting elements configured for emitting a plurality of light beams, wherein the light-emitting elements are arranged along a first side of the rectangular position-detecting surface and disposed on the frame-shaped circuit board; a plurality of light-receiving elements configured for receiving light beams emitted by the plurality of light-emitting elements; a plurality of SMT components configured as optical gates for isolating ambient light to prevent erroneous light detection; and a control circuit. The plurality of SMT components and the plurality of light-receiving elements may be alternately arranged along a second side of the rectangular position-detecting surface opposite to the first side and disposed on the frame-shaped circuit board. The plurality of light-receiving elements may be arranged behind the plurality of SMT components.12-31-2009
20100066703EMBEDDED OPTICAL INDUCTION INPUT DEVICE AND METHOD OF IMPLEMENTING THE SAME - An embedded optical induction input device and method of implementing the same. Such a device includes a light sensing circuit and a conversion circuit. The light sensing circuit generates an induced current signal based on the variations of the intensity of light irradiation received as caused by a touch-control-position event; and the conversion circuit is connected to the light sensing circuit and receives an induced current derived therefrom. The conversion circuit is provided with a first transistor and a second transistor coupled together, that are driven by a positive and a negative biases having the same period but different phases, thus the induced current signals are converted into induced voltage signals based on the alternative turn-on's and turn-off's of the first transistor and the second transistor.03-18-2010
20100053117WRITING DEVICE - A writing device comprising: an irradiation unit that irradiates light to an optically writable display medium which displays an image responsive to irradiated light; a focusing unit that focuses light irradiated by the irradiation unit on the display medium; and a selector that causes the light irradiated by the irradiation unit to pass through or not to pass through the focusing unit for irradiation to the display medium.03-04-2010
20100053118DISPLAY MODULE - A display module includes a display panel and a fingerprint sensor. The display panel includes a display region, a peripheral region next to the display region, an active device array substrate, and an opposite substrate. The fingerprint sensor is disposed in the peripheral region of the active device array substrate of the display panel. Besides, the fingerprint sensor includes a light guide element, a light source, and a photosensor array. The photosensor array is disposed on the active device array substrate. The light guide element is disposed over the photosensor array. The light source is disposed on a side surface of the light guide element or below the light guide element.03-04-2010
20100053116MULTI-TOUCH FORCE SENSING TOUCH-SCREEN DEVICES AND METHODS - Described are methods and devices including a touch sensor layer configured to receive touch input and a force sensor layer stacked with the touch sensor layer, the force sensor layer includes an array of force sensors configured to receive force input. The force sensor array includes individual force sensors. Specific sensors of the disclosed force sensor array are associated with specific locations of the touch screen to add information that can be used to decipher which key is actually being pressed and may avoid falsing. Both a touch signal and a force signal are utilized to determine the validity of a user touch input. In one embodiment each force sensor may operate independently of the others. Particular embodiments are described that utilize a coarse grid to determine valid touch inputs and that make a determination of a centroid location based on a plurality of force sensors to determine valid touch inputs03-04-2010
20120242623TOUCH SENSITIVE DEVICE AND DISPLAY DEVICE EMPLOYING THE SAME - A display device includes a display layer and a light guide plate (LGP) arranged on the display layer. A transparent plate is arranged between the LGP and the display layer, and the transparent plate houses a array of IR sensors. An IR source is arranged on the lateral surface of the LGP, and a scanning mirror is arranged on the lateral surface of the LGP. The IR sensors sense the IR light beams and determine whether a strength of the sensed IR light beams is decreased to below a predetermined threshold value, caused by a touch by a user, on the transparent plate at a location of said IR sensor, and send a signal associated with the touch to the control unit, the control unit is configured to receive the signal and determine the touch point according to the location of said IR sensor.09-27-2012
20120242622TOUCH MODULE - A touch module includes a panel device, an outer frame, and an optical sensor. The panel device includes an array substrate and a display panel having a touch surface. The array substrate is electrically connected to the display panel. The outer frame is disposed on the panel device. The optical sensor is disposed between the panel device and the outer frame, including a wire, at least one lens, a photosensitive chip, and a reflection mirror. The wire is formed on the array substrate. The lens is disposed between the display panel and the outer frame for guiding light transmitted from the touch surface. The photosensitive chip is electrically connected to one end of the wire. The reflection mirror is disposed above the photosensitive chip for reflecting the light guided by the lens to the photosensitive chip.09-27-2012
20110248963Touch Sensitive Image Display - We describe a touch sensitive image display device for projecting a touch sensitive displayed image at an acute angle onto a surface on which the device is placed. The device comprises: light sources to project two-dimensional first and second light distributions in respective first and second planes; and a multi-pixel sensor system to remotely detect touch of an area of said surface within or adjacent to the displayed image by detecting light from the first distribution to provide a detected touch signal. The multi-pixel sensor system also remotely detects presence of an object within the second light distribution to provide a detected presence signal. The device is configured to multiplex projection of the first light and second distributions. A controller has an input to receive the detected touch and detected presence signals and is configured to control the device responsive to these signals.10-13-2011
20110148818OPTICAL TOUCH DISPLAY APPARATUS - An optical touch display apparatus includes the following. A light distribution adjustment device is disposed in a transmission path of a visible beam emitted by a visible light emitting device. A non-visible light guide module includes a light guide unit and a dichroic unit. A light guide unit is disposed in the transmission path of the visible beam from the light distribution adjustment device. The dichroic unit is disposed on a surface of the light guide unit. A non-visible light emitting device is disposed beside a side surface of the light guide unit. A display panel is disposed beside the light distribution adjustment device. A sensing space is located in front of the display panel, and the display panel is disposed between the light distribution adjustment device and the sensing space. An optical detector is disposed outside the display panel.06-23-2011
20110102373OPTICAL PEN AND OPTICAL TOUCH DEVICE HAVING SAME - An exemplary optical pen includes a body, an infrared light source received in the body, a converging lens unit, and a tip. The converging lens unit is received in the body and is positioned along the light path of infrared light emitted from the infrared light source, and is configured for converging the infrared light. The tip includes a receiving end and a handwriting end at opposite sides thereof and defines a through hole extending from the receiving end to the handwriting end. The receiving end is received in the body and is configured for fixing the converging lens unit. The handwriting end protrudes from the body and is configured for projecting the converged infrared light.05-05-2011
20110248961Device Including Multi-Function Circuitry Having Optical Detectors and Method of Flip-Chip Assembly Therefor - A device includes a substrate is substantially transparent and includes a contact surface and an interface surface. The interface surface includes a plurality of electrical contacts. The device further includes a semiconductor die, which includes a plurality of connections, a first photo detector and a second photo detector. Each of the plurality of connections includes a connection bump formed thereon to couple to the plurality of electrical contacts of the interface surface of the substrate. The plurality of connections positioned relative to the first and second photo detectors to alter a directional response of at least one photo detector of the plurality of photo detectors.10-13-2011
20110248959VIRTUAL KEYBOARD ENTRY - A control has up, down, left, and right controls, with a select control located adjacent to the directional controls (e.g., in the center) to allow a user to move an erroneously entered key on a virtual keyboard to a desired key and to select the desired key without requiring the user to take the user's eyes away from the virtual keyboard and to move the user's hands significantly. The virtual keyboard may be displayed on the control or on a separate remote device, such as a television.10-13-2011
20110074735DETECTING THE LOCATIONS OF A PLURALITY OF OBJECTS ON A TOUCH SURFACE - An apparatus is controlled to detect locations of a plurality of objects on a touch surface of a panel. An input scanner arrangement introduces at least three beams of radiation into the panel for propagation by internal reflection, and sweeps the beams inside the panel across a sensing area, preferably in at least two different principal directions. At least one radiation detector is arranged to receive the beams from the input scanner arrangement while they are swept across the sensing area. A data processor is connected to the radiation detector(s) and operated to identify the locations based on an attenuation of the beams caused by the objects touching the touch surface within the sensing area, the attenuation being identifiable from an output signal of the radiation detector(s). Each output signal may be further processed to generate a transmission signal, by dividing the output signal by a background signal which represents the output signal without any object on the touch surface.03-31-2011
20110074734DETECTING THE LOCATION OF AN OBJECT ON A TOUCH SURFACE - An apparatus is operated to determine the location of at least one object on a touch surface of a light transmissive panel. In the apparatus, an illumination arrangement introduces radiation into the panel for propagation by internal reflection between the touch surface and the opposite surface, so as to generate a grid of intersecting radiation paths in a sensing area, and a detection arrangement measures the transmitted energy in the radiation paths. A data processor then determines, based on the transmitted energy, the location based on an attenuation of two or more radiation paths caused by the object touching the touch surface within the sensing area. In the apparatus, the illumination arrangement generates at least a subset of the radiation paths by sweeping at least one beam of radiation along the touch surface. The detection arrangement comprises a fixed re-directing device which receives and re-directs the beam onto a common detection point while the beam is swept along the touch surface, and a radiation detector which is located at the common detection point to measure the energy of the beam(s).03-31-2011
20110074737Method and Device for Adjusting Brightness of an Optical Touch Panel - A method and device are provided for adjusting brightness of an optical touch panel. The optical touch panel comprises a microprocessor, a display module including a back light source, and an optical position detection device including optical transmitting devices and optical receiving devices. The method comprises detecting, via the optical receiving devices, a current ambient light level on the display module. The method further comprises generating, via the optical receiving devices, a current ambient light level signal indicative of the current ambient light level and transmitting the current ambient light level signal to the microprocessor. Furthermore, the method comprises adjusting, via the microprocessor, brightness of the back light source based on the current ambient light level signal.03-31-2011
20110074736OPTICAL POINTING DEVICE AND ELECTRONIC EQUIPMENTS - Light emitted from a light source such as LED and reflected by a fingertip is guided by a cover member onto a light receiving surface of an imaging element. A second resin part is provided that is in contact with the cover member and a resin molded part sealing the imaging element. The reflected light guided by the cover member is made to reach the light receiving surface via the second resin part and the resin molded part, traveling along a path spaced apart from an air layer.03-31-2011
20120146950TOUCH PANEL AND DISPLAY APPARATUS HAVING THE SAME - Provided are a touch panel and a display apparatus having the touch panel. The touch panel includes a substrate, and a plurality of optical devices arranged on the substrate, in which a distance between two adjacent optical devices of the plurality of optical devices may gradually decrease toward a corner of the substrate.06-14-2012
20110248958HOLOGRAPHIC BASED OPTICAL TOUCHSCREEN - Disclosed are various embodiments of a holographic based optical touchscreen and methods of configuring such devices. In certain embodiments, a touchscreen assembly can include a holographic layer configured to receive incident light and turn it into a selected direction to be transmitted through a light guide. The holographic layer can be configured to accept incident light within an acceptance range and so that the selected direction is within some range of directions so as to allow determination of incidence location based on detection of the turned light. A light source can be provided so that light from the source scatters from an object such as a fingertip near the holographic layer and becomes the incident light. Thus the determined incidence location can represent presence of the fingertip at or near the incidence location, thereby providing touchscreen functionality. Non-limiting examples of design considerations and variations are disclosed.10-13-2011
20100265215TOUCH PANEL DISPLAY WITH LIGHT SOURCE MODULES AND CAMERA FOR TOUCH POINT DETECTION - An exemplary touch panel display includes a display panel, light source modules, and a camera. The display panel includes a touch surface. The light source modules are disposed on a periphery of the display panel. Light from the light source modules cooperatively forms a substantially planar illumination field. The camera is provided at a periphery of the display panel. When an object contacts or is adjacent to the touch surface, some of the light of the illumination field is reflected by the object to the camera.10-21-2010
20100295824DISPLAY DEVICE AND ELECTRONIC UNIT - The display device with high detection accuracy includes: display pixel electrodes; a common electrode; a display function layer; a display control circuit performing image display control by applying a pixel voltage to each of the display pixel electrodes and applying a common drive voltage to the common electrode, the common drive voltage inverting in synchronization with a drive cycle of the image display control; a touch detection electrode cooperating with the common electrode to form a capacitor; and a touch detection circuit detecting an external proximity object, based on a detection signal obtained from the touch detection electrode in response to the common drive voltage applied to the common electrode. The touch detection circuit corrects the detection signal based on a gray scale of the image signal at the time of acquisition of the detection signal, and performs the detection operation.11-25-2010
20110254811Display Device - We describe a touch sensitive image display device for projecting a touch sensitive displayed image at an acute angle onto a surface on which the device is placed, the device comprising: a first light source to project a first light distribution; a second light source to project a second light distribution; a touch sensor system to remotely detect touch of an area of said surface within or adjacent to said displayed image by detecting change of said first light distribution, and having an output to provide a detected touch signal; a presence sensor system to remotely detect presence of an object at least partially within said second light distribution by detecting change of said second light distribution, and having an output to provide a detected presence signal; a controller configured to control said device responsive to said detected touch signal and further configured to control said device responsive to said detected presence signal.10-20-2011
20100265216OPTICAL TOUCH APPARATUS AND OPERATING METHOD THEREOF - An optical touch apparatus is disclosed. The optical touch apparatus comprises at least one light sensing module and a processing module. The at least one light sensing module is set at a first side of a surface of the optical touch apparatus, and used for receiving at least one light and generating a sensing result according to the condition of receiving the at least one light. The sensing result relates to whether the at least one light is blocked by at least one object above the surface and also relates to a comparing result between the at least one object and a reference region. The reference region is set at an opposite second side of the surface. The processing module determines at least one touch point position corresponding to the at least one object on the surface according to the sensing result.10-21-2010
20120274606OPTICAL NAVIGATION SYSTEM WITH OBJECT DETECTION - An optical finger navigation system with object detection is provided for preventing cursor movement if a user's finger has been lifted from the navigation surface. The optical finger navigation system may include a light source, an image sensor and an object detection engine. The object detection engine may be operatively coupled with the image sensor and the light source to selectively report motion data upon determining the presence of an object by comparing a scaled-up pixel value with a threshold value. The lift detection engine may be incorporated in a microcontroller, wherein the microcontroller may be added to a navigation system to provide an additional object detection feature.11-01-2012
20100097352TOUCH SCREEN DISPLAY AND METHOD OF DRIVING THE SAME - A TSD (Touch Screen Display) includes a panel including a plurality of light emitting devices to form an image, and a plurality of photo sensors to capture an image of an object touching the panel; a touch position deriving unit to derive a touch position of the object based on output signals of the photo sensors; and a light emission control unit to derive a probability of a plurality of previous touch positions derived by the touch position deriving unit, predict a next touch position after the plurality of previous touch positions according to the probability, and control at least one of the light emitting devices in a light emission area including the next touch position to emit light.04-22-2010
20100097349METHOD AND APPARATUS FOR DETECTING TOUCH POINT - A method of detecting a touch point includes detecting an edge image of a finger image from an input image, generating a touch point image utilizing the detected edge image, and calculating coordinates of the touch point from the touch point image. The touch point image may be generated by setting a center at a position separated by a set distance in a gradient direction with respect to a position where the edge image is detected, and generating the touch point image by summing up gradient magnitude values with respect to a set area based on the set center. The coordinates of multiple touch points may be calculated by updating coordinates of the multiple touch points according to the gradient magnitude values accumulatively summed up in the multiple touch points based on a comparison between the coordinates of the multiple touch points and the set distance.04-22-2010
20100097350PHOTO SENSING DEVICE, PHOTO SENSING CIRCUIT, TOUCH PANEL, AND METHOD OF SENSING OUTPUT VALUE OF PHOTO SENSING ELEMENT - A photo sensing device, a photo sensing circuit, a touch panel, and a method of sensing an output value of a photo sensing element, in order to remove the influence of a threshold voltage. The device includes a photo sensing unit generating a sensing current according to an intensity of incident light, a driving unit outputting a driving current according to the sensing current generated by the photo sensing unit, and a scanning unit outputting on a data line the driving current of the driving unit in a first mode corresponding to the photo sensing unit gathering light for a predetermined period of time and outputting the driving current in a second mode corresponding to the photo sensing unit initializing.04-22-2010
20100097353TOUCH SCREEN SIGNAL PROCESSING - A touch screen which uses light sources at one or more edges of the screen which directs light across the surface of the screen and at least two cameras having electronic outputs located at the periphery of the screen to receive light from said light sources. A processor receives the outputs of said cameras and employs triangulation techniques to determine the location of an object proximate to said screen. Detecting the presence of an object includes detecting at the cameras the presence or absence of direct light due to the object, using a screen surface as a mirror and detecting at the cameras the presence or absence of reflected light due to an object. The light sources may be modulated to provide a frequency band in the output of the cameras.04-22-2010
20100097351APPARATUS AND METHOD FOR ADJUSTING FINGER DEPTH USING CAMERA AND TOUCH SCREEN HAVING THE APPARATUS - Disclosed are an apparatus and a method for adjusting a finger depth using a camera and a touch screen having the apparatus. The apparatus includes a light source installed at an edge of a panel to radiate light in parallel to a surface of the panel, a camera that photographs an object and light emitting points of the light source, and a control circuit that establishes a reference line having a predetermined finger depth by joining the light emitting points and limit lines having various finger depths which are remote from the reference line by several pixels corresponding to resolution of the camera. The control circuit determines whether the object approaches the reference line or the limit lines and determines a position of the object to output a display control signal. The apparatus allows a user to select a desired finger depth.04-22-2010
20110210947INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, INFORMATION RECORDING MEDIUM, AND PROGRAM - To provide an information processing apparatus having a user interface for enabling a user to readily give an instruction. A distance distribution image obtaining unit obtains a distance distribution image produced based a measured result output from a distance distribution measuring unit for measuring distance distribution to an object within a predetermined view field. An instruction content data producing unit produces instruction content data, based on the distance distribution image. An information processing execution unit obtains the instruction content data produced by the instruction content data producing unit, and carries out information processing based on the instruction content data.09-01-2011
20110148822Three-Dimensional Space Touch Apparatus Using Multiple Infrared Cameras - Disclosed herein is a 3D space touch apparatus. The 3D space touch apparatus includes a support, an infrared LED array, left and right infrared cameras, and a space touch sensor module. The support supports the infrared LED array and the left and right infrared cameras. The infrared LED array emits infrared rays, which form an infrared screen in a space above the support. The left and right infrared cameras are disposed on the left and right sides of the support so that the lenses thereof can be oriented to the infrared screen. The space touch sensor module calculates the X-, Y- and Z-axis coordinates of a location of the infrared screen, touched by user pointing means, using images captured by the left and right infrared cameras and information about the resolutions and angles of view of the left and right infrared cameras.06-23-2011
20110148816OPTICAL TOUCH DISPLAY APPARATUS - An optical touch display apparatus including a backlight module, a display panel, and at least an optical detector is provided. The backlight module is capable of providing a visible beam and an invisible beam. The display panel is disposed at one side of the backlight module. A sensing space is located in front of the display panel, and the display panel is located between the backlight module and the sensing space. The visible beam and the invisible beam are capable of passing through the display panel and then being transmitted to the sensing space. The optical detector is disposed outside the display panel for sensing the invisible beam from the sensing space.06-23-2011
20110157089METHOD AND APPARATUS FOR MANAGING IMAGE EXPOSURE SETTING IN A TOUCH SCREEN DEVICE - A method, apparatus, user interface and computer program product for detecting, on a touch screen device displaying an image, a pointing device in proximity to a part of the image, determining an elapsed period of time associated with the proximity of the pointing device to the part, and if the elapsed period of time exceeds a pre-determined time period, activating an exposure control state of the device, determining an exposure level of the part, and adjusting an exposure level of the image in a manner that is inverse to the determined exposure level of the part.06-30-2011
20120032922OPTICAL TOUCH SYSTEM - An optical touch system includes a substrate, at least one sensor, a processing unit and an analysis unit. The substrate has a touch region. The at least one sensor is used for capturing a full-size image of the touch region, wherein the full-size image includes a central region image near a light axis of the at least one sensor, and a side region image. The processing unit is used for sampling the central region image to obtain a central compressed image and transmitting the central compressed image and the side region image under a normal mode. The analysis unit is used for analyzing the central compressed image and the side region image to obtain a touch point coordinate.02-09-2012
20110175848INFRARED RAY TOUCH PANEL DEVICE WITH HIGH EFFICIENCY - An IR touch panel device includes a housing, a plurality of first IR receivers, a first IR transmitter, a plurality of second IR receivers and a second IR transmitter. The plurality of first IR receivers are installed on a bottom side of the housing; the first IR transmitter is installed on a top side of the housing, transmission range of the first IR transmitter covering the plurality of first IR receivers; the plurality of second IR receivers are installed on a right side of the housing; the second IR transmitter is installed on a left side of the housing, transmission range of the second IR transmitter covering the plurality of second IR receivers. A user may control operation of the IR touch panel device through blocking a path between the IR transmitter and the IR receiver.07-21-2011
20110175853DISPLAY DEVICE AND INFORMATION PROCESSING APPARATUS - A display device having at least a display circuit for displaying an image, and a light receiving sensor for detecting a light disposed is provided. When a light receiving circuit region including the light receiving sensor is made a dark portion, and a region other than the light receiving circuit region is made a light portion, the display circuit and the light receiving sensor are disposed so that a spatial frequency of a repetitive pattern of the light portions and the dark portions becomes equal to or higher than 10 cpd.07-21-2011
20100283764INPUT PEN FOR TOUCH-PANEL AND TOUCH-PANEL INPUT SYSTEM - An input pen (11-11-2010
20110254810USER INTERFACE DEVICE AND METHOD FOR RECOGNIZING USER INTERACTION USING SAME - A user interface device includes a frame replacement unit configured to replace a frame of an input image signal by a pattern frame at a frame time; a projector module configured to project an image of the image signal with the pattern frame onto a target; an image acquisition unit configured to capture a pattern image of the pattern frame from the image projected onto the target; and an image recognition unit configured to recognize a user interaction by using the captured pattern image.10-20-2011
20110254808REFLECTIVE TOUCH DISPLAY PANEL AND MANUFACTURING METHOD THEREOF - A reflective touch display panel and a manufacturing method thereof are provided. An incident light enters the display panel through a front substrate thereof. A plurality of pixel structures and a plurality of light sensing devices are disposed on an inner surface of the front substrate. The light sensing device includes a light sensing transistor having a transparent gate electrode. The manufacturing method for the reflective touch display panel includes the following steps. A first patterned transparent conductive layer, including the transparent gate electrode and a capacitance lower electrode, is formed on the front substrate. A first patterned conductive layer, a dielectric layer, a patterned semi-conductive layer, a second patterned conductive layer and a second patterned transparent conductive layer are sequentially formed on the front substrate to respectively form the light sensing device and the pixel structure. A reflective material layer and a back substrate are. assembled on the front substrate to complete the reflective touch display panel.10-20-2011
20120200539DISPLAY DEVICE AND DISPLAY DEVICE DRIVING METHOD - Disclosed is a liquid crystal display device (08-09-2012
20120200538TOUCH SURFACE WITH TWO-DIMENSIONAL COMPENSATION - An apparatus for determining an interaction between an object and a touch surface of a panel. An illumination arrangement introduces light into the panel for propagation by internal reflection between the touch surface and an opposite surface and towards a receiving light detection arrangement. A processor unit is configured to iteratively i) determine, based on the received light, a current light status representing a two-dimensional distribution of light in the panel, ii) determine the interaction with the object as a function of the current light status and a previously updated background status representing a two-dimensional distribution of light in the panel caused by contaminations, and iii) update the background status as a function of the interaction. A method and computer readable medium are also described.08-09-2012
20120200534MULTI-BRANCH LIGHT-BASED INPUT DEVICES - A light-based input device may have multiple branches each based on a respective light-guide structure. A light source may launch light into the light-guide structures. A light sensor may detect light reflected from the light-guide structures or transmitted through the light-guide structures. The light-based input device may be used to gather user input from a user of an electronic device. The user may move an object into contact with the light-guide structures. The light sensor may monitor light intensity fluctuations from the light-guide structures to determine where the light-guide structures have been contacted by the object. Multiple wavelengths of light may be used by the light source and light sensor to reduce crosstalk between adjacent branches of the light-based input device.08-09-2012
20120200532TOUCH-PRESSURE SENSING IN A DISPLAY PANEL - A touch-pressure sensitive panel includes a locally and resiliently deformable waveguide having an exterior surface for receiving localized touch pressure from a user, and a wetting surface opposite the exterior surface. The panel also includes a de-wettable layer presenting a de-wettable surface arranged beneath the wetting surface, such that the localized touch pressure reversibly increases localized optical wetting of the de-wettable surface by the wetting surface. The panel also includes an imaging detector configured to receive light coupled into the de-wettable layer due to the localized optical wetting.08-09-2012
20080252618Display having infrared edge illumination and multi-touch sensing function - A touch-sensing display screen includes an upper transparent substrate, a lower substrate opposite the upper substrate and an infrared light source configured to illuminate a portion of the upper transparent substrate. A light converting layer is disposed between the upper and lower substrate and is configured to convert the infrared light received by the upper transparent substrate to visible light. A pixel thin-film transistor on the lower substrate is configured to activate a pixel electrode, and a light-sensing thin-film transistor is configured to sense the visible light provided by the light converting layer. A light-sense signal is output in response to activation of the light-sensing thin-film transistor.10-16-2008
20100321344OPTICAL TOUCH SYSTEM AND OPERATING METHOD THEREOF - An optical touch system is disclosed. The optical touch system comprises a panel apparatus and an optical touch apparatus. The panel apparatus includes a first position and a second position. The optical touch apparatus includes a light emitting module, a light path adjusting module, a light sensing module, and a processing module. The light emitting module and the light sensing module are set on the first position and the second position respectively. The light emitting module emits a sensing light, and the sensing light is reflected by the light path adjusting module to form a reflected light. The light sensing module receives the reflected light and generates a sensing result according to whether the light sensing module receives the reflected light. The processing module determines the touch point position formed on the panel apparatus according to the sensing result.12-23-2010
20100321342OPTICAL TOUCHPAD DEVICE - An optical touchpad device includes an LCD display module having a light output surface for outputting a linearly polarized light, a sensor, and an image capturing module. The sensor is disposed in front of the light output surface, transparent, and of being anisotropy when a pressure is applied thereon; the image capturing module has a polarizer whose polarization direction is perpendicular to that of the linearly polarized light, wherein, the linearly polarized light transmits through the sensor when the pressure applied upon the sensor, double refracts to two bundles of light with different vibration directions according to the pressure, and forms an interference image which is then captured by the image capturing module after the two bundles of light transmitting through the polarizer, thereby coordinates of a position of the senor where an user applies the pressure at can be calculated.12-23-2010
20100321340System and Method of Distinguishing Multiple Touch Points - The invention discloses a method of distinguishing multiple touch points applied to an optical touch system which includes a panel for indicating a first touch point and a second touch point thereon and a camera unit for capturing an image relative to the first touch point and the second touch point. The image has a first dark area and a second dark area corresponding to the first touch point and the second touch point respectively. In the method, if it is observed that the first dark area and the second dark area merge into a first single dark area and a second single dark area at current time and previous time respectively, the respective positions of the first dark area and the second dark area are determined based on the respective union dark area widths of the first single dark area and the second single dark area, and the respective coordinates of the first touch point and the second touch point are determined according to the respective positions of the first dark area and the second dark area.12-23-2010
20100321341PHOTO SENSOR, METHOD OF FORMING THE SAME, AND OPTICAL TOUCH DEVICE - The present invention provides a photo sensor, a method of forming the photo sensor, and a related optical touch device. The photo sensor includes a first electrode, a second electrode, a first silicon-rich dielectric layer and a second silicon-rich dielectric layer. The first silicon-rich dielectric layer is disposed between the first electrode and the second electrode for sensing infrared rays, and the second silicon-rich dielectric layer is disposed between the first silicon-rich dielectric layer and the second electrode for sensing visible light beams. The multi-layer structure including the first silicon-rich dielectric layer and the second silicon-rich dielectric layer enables the single photo sensor to effectively detect both infrared rays and visible light beams. Moreover, the single photo sensor is easily integrated into an optical touch device to form optical touch panel integrated on glass.12-23-2010
20120200537COORDINATE POSITION DETECTION DEVICE, METHOD OF DETECTING COORDINATE POSITION, AND DISPLAY DEVICE - When a coordinate detector detects a first light-blocking object, a display device conducts a first local simultaneous scanning process for scanning a local area including the first light-blocking object and an entire sequential scanning process for scanning the entirety of a display surface in parallel. Additionally, during the first local simultaneous scanning process and the entire sequential scanning process conducted in parallel, when a second light-blocking object is detected by the entire sequential scanning process, the display device conducts a second local simultaneous scanning process for scanning a local area including the second light-blocking object in parallel with the first local simultaneous scanning process.08-09-2012
20120200536Waveguide Configurations for Minimising Substrate Area - The invention describes various optical waveguide layouts with reduced substrate area, with particular application to reducing bezel width in optical touch systems. In certain preferred embodiments the optical waveguide layouts include a plurality of waveguide crossings.08-09-2012
20120200535SYSTEM AND METHOD FOR IMPROVING MACHINE VISION IN THE PRESENCE OF AMBIENT LIGHT - A system and method utilizing two image sensors to simultaneously capture images of a FOV (field of view). The image sensors are arranged along the same optical path for viewing the FOV. The FOV is illuminated by an illuminator of a specific frequency band. An image is captured by the first image sensor which has a filter that passes at least a portion of the light of the frequency band of the illuminator. An image is captured by the second image sensor that has a filter to pass a band of frequencies adjacent to, but generally not including the frequency band of the illuminator. The images may be manipulated, for example, to provide enhanced performance and/or compensate for variables in the system. A processor subtracts the images to produce an image that represents light reflected back from the illuminator, excluding ambient light at the frequency of the illuminator.08-09-2012
20110163998LIGHT-BASED TOUCH SCREEN WITH SHIFT-ALIGNED EMITTER AND RECEIVER LENSES - A touch screen including a housing, a display mounted in the housing, a plurality of collimating lenses mounted in the housing along two opposite edges of the display and arranged along the two edges so as to be shift-aligned relative to one another, a plurality of light pulse emitters mounted in the housing that are spaced apart from and transmit light pulses through the collimating lenses of one of the two edges over the display, a plurality of light pulse receivers mounted in the housing that are spaced apart from and receive the light pulses through the collimating lenses of the opposite of the two edges, and a calculating unit, mounted in the housing and connected to the receivers, that determines a location of a pointer on the display that partially blocks the light pulses transmitted by the emitters, based on outputs of the receivers.07-07-2011
20130169595RANGING APPARATUS, RANGING METHOD, AND INTERACTIVE DISPLAY SYSTEM - A ranging apparatus including an image sensor, an imaging lens, and a processor is provided. The imaging lens is configured to image an object on the image sensor to produce an image signal having at least one image parameter, wherein the at least one image parameter changes with a change of an object distance of the object. The processor is configured to determine the change of the object distance according to a change of the at least one image parameter. A ranging method and an interactive display system are also provided.07-04-2013
20100283765DISPLAY DEVICE HAVING OPTICAL SENSORS - A liquid crystal panel with built-in sensors 11-11-2010
20100283763MULTI-SENSING TOUCH PANEL AND DISPLAY APPARATUS USING THE SAME - A multi-sensing touch panel and a display apparatus using the same are provided. The multi-sensing touch panel includes: a touch pad including an input surface; at least one infrared ray source which irradiates infrared rays to the touch pad; and a camera array including a plurality of infrared ray cameras which are disposed below the touch pad and inclined with respect to a plane of the input surface.11-11-2010
20110134077Input Device and Input Method - The present invention discloses an input device and an input method. The input device is configured to indicate a lateral movement of a finger by comparing the two orthogonal components of a finger movement.06-09-2011
20110134079TOUCH SCREEN DEVICE - A radiation source emits radiation, with respect to a touch sensitive surface, which is detected by a corresponding sensor. By sensing radiation levels in a sensing plane substantially parallel with said surface, a determination is made as to an instance of at least one touch of the surface by a touching object. Furthermore, the sensed radiation levels are processed to determine a relative pressure applied to the surface by the at least one touch based upon a parameter related to an approaching speed of the touching object.06-09-2011
20110134080OPTICAL POSITION DETECTION DEVICE AND PROJECTION DISPLAY DEVICE - An optical position detection device includes: a light source section adapted to emit a position detection light beam to form a light intensity distribution in which the intensity varies along a reference surface; a light detection section adapted to detect the position detection light reflected by a detection target object located in a detection space in which the light intensity distribution is formed; and a position detection section adapted to detect a position of the detection target object based on a detection value of the light detection section, wherein the light detection section has a light receiving section provided with a light detection surface, and a light blocking section adapted to block a part of the position detection light, and the light blocking section has an opening section disposed between the detection space and the light detection surface with a distance from the light detection surface.06-09-2011
20110134078Distance-measuring device, 3D image-sensing device, and optical touch system - A distance-measuring device includes a light-emitting/sensing controlling circuit, a light-emitting component, a light-sensing group, a background-calculating circuit, a frequency-adjusting circuit, and a distance-calculating circuit. The light-emitting component emits a detecting light to a measured object. The light-emitting/sensing controlling circuit controls the light-sensing group receiving and accumulating the energy of a reflective light generated by the measured object reflecting the detecting light, so that the distance-calculating circuit can calculate a measured distance between the measured object and the distance-measuring device according the accumulated energy of the light-sensing group. In addition, the distance-measuring device calculates the energy accumulated by the light-sensing group sensing the background light per unit time, by means of the background-calculating circuit. In this way, the effect of the background light is reduced so that the distance-measuring device can more correctly calculate the measured distance.06-09-2011
20130120315Systems and Sensors for Tracking Radiation Blocking Objects on a Surface - Several systems for tracking one or more radiation blocking objects on a surface are disclosed. A pair of radiation sensors are provided adjacent the surface and a plurality of radiation sources are provided adjacent the surface. Radiation from at least some of the radiation sources travels across the surface to reach each of the radiation sensors. One or more radiation blocking objects on the surface attenuate radiation from one or more radiation sources from reaching each of the sensors. The position of the one or more radiation blocking objects is estimates and may be tracked based on the position of the one or more attenuated radiation sources relative to each radiation sensor.05-16-2013
20100182281TOUCH SCREEN PANEL DEVICE - The touch screen panel device according to the embodiment of the present embodiments includes: a touch screen panel; and an adhesive member that is formed on at least any one of an upper surface and a lower surface of the touch screen panel and includes an adhesive layer and re-releasing coating layers formed on both surfaces of the adhesive layer, wherein the re-releasing coating layer is formed by adding fluorine (F) or silicon (Si) into UV curing resin.07-22-2010
20110254809DISPLAY DEVICE HAVING OPTICAL SENSING FRAME AND METHOD FOR DETECTING TOUCH USING THE SAME - A display device having an optical sensing frame, including a display panel; at least one waveguide unit arranged at two adjacent sides of the display panel, the waveguide unit having a stacked structure, the stacked structure including a light-emitting layer, and a light-receiving layer to receive reflected light, and a plurality of retroreflectors arranged at opposing sides of the waveguide unit.10-20-2011
20110163995TOUCH PANEL AND TOUCH SENSING METHOD - A touch panel including a plurality of fiber Bragg grating (FBG) columns, a plurality of FBG rows, a wideband light source emitter, a plurality of column sensors, a plurality of row sensors, and two optical couplers is provided. The FBG columns and the FBG rows are interlaced configuration. The wideband light source emitter is connected to the FBG columns and the FBG rows. Each of the column sensors is connected to the corresponding FBG column. Each of the row sensors is connected to the corresponding FBG row. One optical coupler is connected between a first column end of each FBG column and the wideband light source emitter. The other optical coupler is connected between a first row end of each FBG rows and the wideband light source emitter.07-07-2011
20120146948Optical Navigation Module and Mobile Electronic Appliance Using Optical Navigation Module - An optical navigation module includes a light source, a light transmission window having a navigation surface, a first light shield configured for blocking the ambient light and absorbing the scattered light, a sensor configured for detecting light from the light transmission window and a second light shield located between the light source and the sensor and configured for blocking the direct light from the light source to the sensor. The light transmission window includes at least one refraction surface. The refraction surface is in the light path from the light source to the sensor.06-14-2012
20110261020TOUCH PANEL, METHOD FOR DRIVING TOUCH PANEL, AND DISPLAY APPARATUS HAVING TOUCH PANEL - A touch panel includes: a substrate; a plurality of light emitting elements; and a plurality of light receiving elements, wherein the number of light receiving elements may be greater than the number of light emitting elements.10-27-2011
20110261019SEMICONDUCTOR DEVICE, METHOD FOR MANUFACTURING SAME, AND DISPLAY DEVICE - A semiconductor device according to the present invention includes a thin-film transistor and a thin-film diode. The respective semiconductor layers and of the thin-film transistor and the thin-film diode are crystalline semiconductor layers that have been formed by crystallizing the same crystalline semiconductor film. Ridges have been formed on the surface of the semiconductor layer of the thin-film diode. And the semiconductor layer of the thin-film diode has a greater surface roughness than the semiconductor layer of the thin-film transistor.10-27-2011
20110261016Optical touch screen system and method for recognizing a relative distance of objects - An optical touch screen system for recognizing a relative distance of an object based on optical sensors includes a display screen to display visual prompts to solicit actions from a user; first and second lighting and sensing modules mounted on two adjacent corners of the display screen for forming first and second visual fields above the display screen respectively, wherein the first and the second visual fields intersect to form a touch area on the display screen, and the first and the second lighting and sensing modules detect an object entering the touch area and generate a first electrical position signal and a second electrical position signal respectively; and a processor for calculating a position of the object based on the first electrical position signal and the second electrical position signal.10-27-2011
20110261014OPTICAL TOUCH APPARATUS - An optical touch apparatus is disclosed herein. The touch apparatus includes an infrared ray laser transmitting module, two infrared ray detective modules and a system controlling module. The infrared ray laser transmitting module is configured to generate an infrared ray laser light and the two infrared ray detective modules are configured to respectively detect the reflective infrared ray light reflected from a touch object. The system controlling module will receive the detective result from the infrared ray detective module so as to determine the coordinate location of the touch object.10-27-2011
20110080375IMAGE DISPLAY PANEL AND ELECTRONIC APPARATUS - An image display panel includes an image display plate that includes an image display screen and a frame surrounding an outer circumference of the image display screen; a protective component that covers a front surface of the image display screen; and a double-sided adhesive tape of which one surface is adhered to the frame and another surface is adhered to the protective component so that one end portion thereof protrudes from the frame.04-07-2011
20110096035LIQUID CRYSTAL DISPLAY - A liquid crystal display comprises a liquid crystal module, a backlight module, a driving and detecting module, and plural photo-sensors; the said liquid crystal module contains polarizers, glass plates, liquid crystal, color filters, thin film transistors (TFTs), black matrixes, and various lines; the said backlight module contains light source, light guide, and diffuser; the said driving and detecting module contains date driver, gate driver, photo-sensor driver, and photo-sensing detector; the said plural photo-sensors contains P-N diodes or thin film transistors; each of the said plural photo-sensors is respectively installed at each pixel unit; the plural photo-sensors are used to sense the red and infrared rays which are first emitted from the light source, then pass through the liquid crystal module, and are finally reflected from the touch finger of the user using the optical touch-sensitive liquid crystal display, and are used to provide the sensed signals for the determination of the touch location of the user finger.04-28-2011
20110096034OPTICAL TOUCH-SENSING DISPLAY - An optical touch-sensing display including a display device, at least three light guides, at least two optical touch-sensing devices and a transmission interface is provided. The display device has a display surface and a sensing space upon the display surface. Each of the light guides disposed at periphery of the display surface has two light incident surfaces and a light-emitting surface there between. Each of the optical touch-sensing devices disposed outside of the display surface includes a sensing module and a light source. When an object enters the sensing space, each sensing module senses a light variation induced by the object to generate a first signal, and then the first signals are transmitted to one sensing module and processed to a second signal, and then the second signal is output from the optical touch-sensing device through the transmission interface.04-28-2011
20110096032OPTICAL POSITION DETECTING DEVICE AND DISPLAY DEVICE WITH POSITION DETECTING FUNCTION - An optical position detecting apparatus that detects a position of a target object in a detection region, includes: a light source device for position detection that emits position detection light to the detection region and forms an intensity distribution of the position detection light in the detection region; plural photodetectors that direct incident angle ranges to regions not overlapping one another in the detection region; and a position detecting device that detects the position of the target object on the basis of results of detection by the photodetectors of the position detection light reflected on the target object.04-28-2011
20110096031POSITION DETECTING FUNCTION-ADDED PROJECTION DISPLAY APPARATUS - A position detecting function-added projection display apparatus that optically detects a position of a target object positioned in a forward space in which an image is projected from an image projecting device, includes: a position detecting light source unit that forms a distribution of intensities of position detecting light in the forward space by emitting the position detecting light into the forward space; a plurality of photodetectors that are disposed in the image projecting device and have ranges of incident angles in directions of angles different from each other when the forward space is viewed from the image projecting device; and a position detecting unit that detects the position of the target object based on results of detection of the position detecting light reflected by the target object by using the photodetectors.04-28-2011
20110096029ELECTRONIC DEVICE WITH INFRARED TOUCH PANEL AND METHOD FOR CONFIGURING THE INFRARED TOUCH PANEL - A configuration method includes the following steps: Controlling the display unit to display visual information, determining whether the visual information includes one or more touch icons, and determining if the display areas are displaying the touch icons, if yes, determining which infrared lines correspond to the display areas. Then determining which infrared emitters and which infrared receivers form the infrared lines, and turning on the determined infrared emitters and infrared receivers, finally, turning off the other infrared emitters and infrared receivers. The invention also provides an electronic device with an infrared touch panel.04-28-2011
20110096030OPTICAL POSITION DETECTING DEVICE AND DISPLAY DEVICE WITH POSITION DETECTING FUNCTION - An optical position detecting apparatus for optically detecting a position of a target object in a detection region includes: a light source device for position detection that emits position detection light to the detection region and forms an intensity distribution of the position detection light in the detection region; a photodetector that receives the position detection light reflected on the target object; and a position detecting device that detects the position of the target object on the basis of a light reception result in the photodetector, wherein the light source device for position detection includes: a linear light source unit extending along an outer peripheral edge of the detection region and including a light emitting section that emits the position detection light to the detection region; and a light-source driving unit that drives the linear light source unit.04-28-2011
20110096028ELECTRONIC DEVICE WITH INFRARED TOUCH PANEL AND TOUCH INPUT METHOD THEREOF - A touch input method includes steps: controlling one of the infrared emitters to turn on and send an infrared signal to the infrared receivers in sequence, thus forming a number of first infrared lines. Detecting whether an infrared receiver does not receive the infrared signal. Determining if the first infrared line is blocked by an object, thus determining a first blocked infrared line. Controlling the other infrared emitter to turn on and send the infrared signal to the infrared receivers, thus forming a number of second infrared lines. Determining if the second infrared line is blocked by the object, thus determining a second blocked infrared line. Determining touch position according to the first and the second blocked infrared lines, executing the function of a GUI element corresponds to the touch position. The disclosure also provides an electronic device with an infrared touch panel.04-28-2011
20110096027Sensor scan drivers, flat panel displays with built-in touch screen including such a sensor scan driver, and methods of driving such flat panel displays - A sensor scan driver may include a shift register unit for driving photodiodes, a transmission gate unit for changing a voltage range of sensor scan signals generated by the shift register unit, and a buffer unit for supplying the sensor scan signals supplied from the transmission gate unit to the photodiodes, wherein the transmission gate unit includes first and second transmission gates, each including an electrode adapted to receive an output signal of the shift register unit, another electrode adapted to receive the inverted output signal of the shift register unit, an input terminal coupled to first and second power sources, respectively, and an output terminal coupled to an output terminal of the transmission gate unit.04-28-2011
20110175850INFRARED TOUCH DISPLAY APPARATUS - An infrared touch display apparatus, includes a touch screen, a first circuit board arranged above the screen, a second circuit board arranged at the left side of the screen, a third circuit board arranged below the screen, a fourth circuit board arranged at the right side of the screen, emitters E07-21-2011
20100214269OPTICAL TOUCH MODULE - An optical touch module is adapted to provide a touch area. At least one sensor is disposed at a corner of the touch area. The optical touch module includes at least one light emitting element and at least one waveguide element. The waveguide element is disposed on at least one side of the touch area, for guiding and emitting light rays provided by the light emitting element to the touch area. Each waveguide element includes a light incident surface and a light emitting surface. The light incident surface faces the light emitting element. The light emitting surface faces the touch area. Thereby, the light rays emitted from the light emitting element are distributed on the touch area through the waveguide element, so as to lower the luminance of the light emitting element and reduce the current consumption.08-26-2010
20100214267MOBILE DEVICE WITH VIRTUAL KEYPAD - A mobile electronic device with a virtual input device. The virtual input device includes an optical sensor for detecting movement of a user's fingers over a work surface and an acoustic or vibration sensor, for detecting an impact of the user's fingers on the work surface. A processor, coupled to the optical sensor and to the acoustic sensor, processes the detected signals as input for the electronic device. The user's fingers can be shown on the display overlaid by a virtual mask. The virtual mask may show a keyboard of menu items.08-26-2010
20120146951TOUCH DETECTING SYSTEM - A touch detecting system for installation on a touch panel includes two point light sources arranged along one side of a touch panel, an optical sensor disposed at an opposite second side of the touch panel, at least one optical lens, and a processing unit. The at least on optical lens is disposed between the second side of the touch panel and the optical sensor. The at least one optical lens is spaced from the touch panel and the optical sensor, for directing the light from the point light sources to the optical sensor. The optical sensor captures an image which including two dark points of the light from the point light sources when a touch object is on the touch panel. The processing unit determines the position of the touch object on the touch panel based on positions of the dark points in the image.06-14-2012
20110261018OPTICAL TOUCH DEVICE AND LIGHT SENSING MODULE THEREOF - An optical touch device having a touch area is provided. The optical touch device includes at least a light sensing module disposed beside the touch area. The light sensing module includes a sensing unit and at least a reflecting member. The sensing unit has a plurality of sensing regions. Each of the sensing regions has a field of view. The at least a reflecting member is disposed in the front of at least one of the sensing regions so as to turn the field of view of the corresponding sensing region. The optical touch device is adapted to be applied to an electronic product. Moreover, two light sensing modules are also provided.10-27-2011
20100066704POSITION INPUT DEVICE - An optical position input device is provided which enables simultaneously inputting of multiple points.03-18-2010
20100194712OPTICAL POINTING DEVICE AND PORTABLE ELECTRONIC DEVICE HAVING THE SAME - Disclosed herein is an optical pointing device as a user interface for electronic devices such as communication terminals and the like. The optical pointing device includes a light receiving part, an optical unit transferring light to the light receiving part and including a reflection part disposed in an optical path, a frame body integrally formed with the reflection part to support the reflection part, a cover covering the frame body and having an interface surface, and a light source illuminating the cover. The optical pointing device reduces the number of components and permits convenient and easy assembly, thereby significantly improving productivity while reducing assembly defect.08-05-2010
20100194713User interface device - A user interface device detects a fingertip placed on an imaging range. The imaging range is located or arranged so that a user inserts and place a hand along a predetermined direction. A device detects a tip area corresponding to the fingertip from the imaging range. The device determines whether the detected tip area is a finger or not. The determination can be performed by evaluating a size of the tip area, for example, whether the width is in an appropriate range or not. If the tip area is verified as a finger, a position of the fingertip is calculated. According to the device, it is possible to determine whether it is a finger or not by using a relatively simple algorithm. As a result, it is possible to eliminate objects other than finger and to provide sufficient accuracy for detecting the fingertip.08-05-2010
20100194711Optical Touch Sensing Apparatus - The invention discloses an optical touch sensing apparatus applied to a panel. The optical touch sensing apparatus comprises an frame, a first image capturing module, a second image capturing module, and a processing module. The first image capturing module is set at a first position for capturing a first image corresponding to a touch point on the panel; the second image capturing module is set at a second position for capturing a second image corresponding to the touch point. The processing module is used for determining a coordinate of the touch point according to the first image and the second image.08-05-2010
20110148819DISPLAY DEVICE INCLUDING OPTICAL SENSING FRAME AND METHOD OF SENSING TOUCH - A method of sensing touch on a display device having an optical sensing frame includes emitting first light from a sensor module, receiving a first reflection at the sensor module, emitting second light from a waveguide, receiving a second reflection at the waveguide, and if a touch is made on an optical sensing frame, detecting that reflections of the first and the second light are interfered and determining a change in the quantity of the first and second reflection received to determine the touch.06-23-2011
20110148821Infrared Screen-Type Space Touch Apparatus - Disclosed herein is an infrared screen-type space touch apparatus. The infrared screen-type space touch apparatus includes an infrared LED array provided with infrared LEDs arranged in a line, and configured to emit infrared rays and generate an infrared screen in a space. An infrared camera is installed to allow a lens thereof to face the infrared screen. A space touch sensor module senses a location touched by a user pointing means on the infrared screen from a gray scale image captured by the infrared camera.06-23-2011
20110148820METHOD FOR DETECTING TOUCH AND OPTICAL TOUCH SENSING SYSTEM - An optical touch sensing method includes sensing light corresponding to a touch region, comparing a first amount of the light sensed corresponding to the touch region with a first lower threshold, determining that a touch is made if the first amount is less than or equal to the first lower threshold, comparing the first amount of the light sensed corresponding to the touch region with an upper threshold, and determining that a touch is made if the first amount is greater than or equal to the upper threshold.06-23-2011
20110148817OPTICAL WAVEGUIDE WITH LIGHT-EMITTING ELEMENT AND OPTICAL TOUCH PANEL WITH THE SAME - A main path in an optical waveguide with a light-emitting element has two sides faced to each other: one side has a plurality of branched points and the other side does not have any branched points. A width W of the main path becomes narrower as the main path moves away from a light-emitting element. An angle α formed by the main path and a light guiding direction in each branched point of each branched path is 0.1° to 2.0°. An angle θ formed by the other side without branched points and the light guiding direction of the main path is 0.3° to 1.7°.06-23-2011
20110148814SENSOR SYSTEM AND OPTICAL TOUCH SENSOR - Provided is an optical touch sensor including an optical path through which light propagates, a metal layer disposed on the optical path, a flexible touch key configured to contact the metal layer when being bent, an incident light reflecting surface configured to make the light that propagates through the optical path be incident on the metal layer at an angle at which surface plasmon resonance occurs when the metal layer and the touch key are separated from each other, and a detector configured to detect reflected light from the metal layer and determine that the touch key is pressed in the case where an intensity of the reflected light increases.06-23-2011
20110163996DETERMINING THE LOCATION OF ONE OR MORE OBJECTS ON A TOUTH SURFACE - An apparatus is operated to determine a location of at least one object on a touch surface of a light transmissive panel. An illumination arrangement in the apparatus is operated to introduce beams of radiation into the panel for propagation by internal reflection between the touch surface and the opposite surface, and to sweep each beam along the touch surface within a sensing area. Thereby, the sensing area is illuminated such that an object that touches the touch surface within the sensing area causes at least two beams to be temporarily attenuated. The illumination arrangement is arranged such that each beam, downstream of the sensing area, is swept along one or more elongate outcoupling sites on the panel. At least one light sensor, which is optically coupled to the outcoupling site, is operated to measure the received energy of the beam within the outcoupling site. A data processor is operated to obtain, from the light sensor, an output signal indicative of the received energy of the beam within the outcoupling site as a function of time, and to identify, based on the output signals for the different beams, the location of the object.07-07-2011
20110187679OPTICAL TOUCH DISPLAY DEVICE AND METHOD THEREOF - An optical touch display device includes a display screen, at least one image acquisition module, and a processing module. The display screen includes a display panel and a light emitting module for emitting an invisible light. The image acquisition module acquires an invisible light image reflected by an object located in front of the display panel and irradiated by the invisible light emitted from the light emitting module. The processing module is connected to the display screen and the image acquisition module for receiving the invisible light image acquired by the image acquisition module, performing an image feature analysis on the received invisible light image, and regulating brightness of the invisible light according to a result of the performed image feature analysis. An optical touch display method is also disclosed.08-04-2011
20110187678TOUCH SYSTEM USING OPTICAL COMPONENTS TO IMAGE MULTIPLE FIELDS OF VIEW ON AN IMAGE SENSOR - A touch system includes a touch sensing plane and a camera assembly that is positioned proximate the touch sensing plane. The camera assembly includes an image sensor and at least one virtual camera that has at least two fields of view associated with the touch sensing plane. The at least one virtual camera includes optical components that direct light that is proximate the touch sensing plane along at least one light path. The optical components direct and focus the light onto different areas of the image sensor.08-04-2011
20110175852LIGHT-BASED TOUCH SCREEN USING ELLIPTICAL AND PARABOLIC REFLECTORS - A touch screen system, including a housing, a display mounted in the housing, a plurality of light pulse emitters mounted in the housing below the display, a plurality of light pulse receivers mounted in the housing below the display, a first light guide, mounted in the housing along a first edge of the display, including a first substantially parabolic reflective surface for reflecting light pulses transmitted by the emitters, and a first substantially elliptical refractive surface, positioned substantially above the first substantially parabolic reflective surface, for refracting the reflected light pulses over the display, a second light guide, mounted in the housing along an opposite edge of the display, including a second substantially elliptical refractive surface for further refracting the light pulse refracted by the first substantially elliptical refractive surface, and a second substantially parabolic reflective surface, positioned substantially below the second substantially elliptical refractive surface, for reflecting the further refracted light pulses to the receivers, and a calculating unit, mounted in the housing and connected to the receivers, to determine a location of a pointer on the display that partially blocks the light pulses refracted by the first light guide, based on outputs of the receivers corresponding to light pulses refracted by the second light guide.07-21-2011
20110175851ELECTRONIC PEN FOR DETECTING TOUCH LOCATION, CONTROLLING METHOD OF THE SAME, AND DRIVING METHOD OF PLASMA DISPLAY APPARATUS - An electronic pen for detecting a touch location, a controlling method of the same and a driving method of a plasma display apparatus are disclosed. According to embodiments of the present invention, synchronization between the electronic pen and the plasma display apparatus may be performed. An electronic pen includes a sensor for receiving infrared emissions and for generating a plurality of sensing signals in response to the infrared emissions, a synchronization unit for determining a synchronization timing in accordance with timings of the plurality of sensing signals, and a coordinate detection unit for detecting an emission location of the infrared emissions in accordance with time differences between the synchronization timing and the timings of the plurality of sensing signals.07-21-2011
20100026665Building Block - Methods and apparatus for providing a building block having a number of light transmitting fibers embedded into building materials, such as concrete. The light transmitting fibers have an output end and an input end, where the output ends of the light transmitting fibers are arranged in a display pixel pattern on at least one surface of the building block, and where the input fibers are arranged in an input pixel pattern at an input surface of the building block. A method of manufacturing a building block for the display system is also disclosed.02-04-2010
20120146952OPTICAL TOUCH PANEL - Provided is an optical touch panel. The optical touch panel includes: an optical waveguide including a core delivering an optical signal and a clad surrounding the core; a light generator delivering the optical signal into the optical waveguide; and a light detector measuring the optical signal passing through the optical waveguide, wherein the optical waveguide includes a sensing part having a sensing surface and a passing part having a non-sensing surface; the core includes a sensing core portion in the sensing part and a passing core portion in the passing part; and a distance between the sensing surface and a top surface of the sensing core portion is shorter than that between the non-sensing surface and a top surface of the passing core portion.06-14-2012
20100321343OPTICAL TOUCH APPARATUS AND OPERATING METHOD THEREOF - An optical touch apparatus is disclosed. The optical touch apparatus comprises a light source emitting module, an optical module, a light sensing module, and a processing module. The optical module and the light sensing module are set around a surface of the optical touch apparatus. The light source emitting module sequentially emits scanning lights uniformly distributed above a direct scanned region of the surface according to a time sequence. When an object forms a touch point on the surface, the object will block the scanning lights and reflected lights reflected by the optical module. The light sensing module generates a sensing result according to the condition the light sensing module receives the scanning lights and the reflected lights. The processing module determines the position of the touch point according to the time sequence and the sensing result.12-23-2010
20100238136TOUCH PANEL DISPLAY WITH INFRARED LIGHT SOURCE - An exemplary touch panel display includes a display panel, a backlight module, two infrared cameras, and a processor. The display panel has a touch surface. The backlight module includes a light guide plate and a light source module. The light source module includes a first visible light source and a second infrared light source. The light guide plate is capable of transmitting the visible light and the infrared light through to the display panel. The infrared cameras are disposed in the light guide plate. The infrared cameras are to detect infrared light that is reflected from an object in contact with or adjacent the touch surface of the display panel and form images based on the detected infrared light. The processor is to receive the images outputted from the infrared cameras, and process the images to obtain a position of the object at the touch surface.09-23-2010
20120146953DISPLAY APPARATUS FOR SENSING MULTI-TOUCH AND PROXIMITY OBJECT - A display apparatus that may enable sensing a multi-touch and a proximity object is provided. The display apparatus may display an image generated by the object on an organic light emitting diode (OLED) display panel, and may sense an invisible light that may be reflected by the object and may have entered through a hole.06-14-2012
20120146949METHOD FOR POSITIONING COMPENSATION OF A TOUCH OBJECT ON A TOUCH SURFACE OF A SCREEN AND OPTICAL TOUCH MODULE THEREOF - A method for positioning compensation of a touch object on a touch surface of a screen is disclosed. The method includes disposing a mark unit on a side frame of a screen, recording an ideal pixel position of the mark unit in an ideal side-frame image, capturing an actual side-frame image toward a touch surface of the screen, and determining whether to adjust relations between pixel positions and camera angles of a touch object according to the ideal pixel position and an actual pixel position of the mark unit in the actual side-frame image.06-14-2012
20120146947Optical Touch-Screen Imager - Embodiments of an apparatus comprising a CMOS image sensor including a pixel array formed in a substrate and a light guide formed on the substrate to receive light traveling in a plane parallel to a plane of the pixel array and incident on the edge of the image sensor and to re-direct the incident light into at least one pixel of the pixel array. Embodiments of an optical touch-screen imager comprising a substantially planar touch area and a detector positioned adjacent to the touch area, the detector comprising a CMOS image sensor as described above.06-14-2012
20110134081OPTICAL POSITION DETECTION DEVICE AND DISPLAY DEVICE WITH POSITION DETECTION FUNCTION - An optical position detection device includes: a detecting light source section adapted to emit a detection light beam; a light source drive section adapted to drive the detecting light source section to form an X-coordinate detecting light intensity distribution in which an intensity of the detection light beam varies in an X-axis direction, and a Y-coordinate detecting light intensity distribution in which an intensity of the detection light beam varies in a Y-axis direction intersecting the X-axis direction; a light detection section adapted to receive the detection light beam reflected by a target object; and a position detection section adapted to detect a position of the target object based on a reception intensity in the light detection section.06-09-2011
20110148815TOUCH PANEL WITH CARBON NANOTUBE FILM - An exemplary touch panel, includes a flexible first substrate, a second substrate opposite to the first substrate, a first electrically conductive layer formed on the first substrate and facing the second substrate, a second electrically conductive layer formed on the second substrate and facing the first substrate, a carbon nanotube film formed on the second electrically conductive layer, a plurality of insulated dot spacers arranged between the first electrically conductive layer and the carbon nanotube film, an infrared sensor array arranged on the second substrate and including a number of infrared sensors corresponding to pixels of the touch panel; and a signal processor receiving signals from the infrared sensors.06-23-2011
20120306817FLOATING VIRTUAL IMAGE TOUCH SENSING APPARATUS - A floating virtual image touch sensing apparatus includes at least one optical module generating a floating virtual image, at least one first light source, at least one photosensitive unit, a printing circuit board and a processor; the optical module is coupled to the printing circuit board; the first light source and the photosensitive unit are respectively disposed on the two sides of the optical module. when the optical module generates a floating virtual image, and a light beam emitted from the first light source passes through the virtual image, a body reflects the light beam projected on the virtual image to the photosensitive unit if the body touches the virtual image, the photosensitive unit then output a photosensitive signal, and the processor detects the photosensitive signal, then knows the virtual image is touched, and emits a corresponding control signal.12-06-2012
20120306819INPUT FUNCTION DISPLAY DEVICE - An input function display device includes: a display unit to which a position information pattern representing a coordinate position is given; and a position information reading unit that reads the position information pattern using invisible light, in which the display unit includes an electrophoretic element, a first substrate having a first electrode on a face of the electrophoretic element side, and a second substrate having a second electrode on a face of the electrophoretic element side, and any one of a constituent member of the electrophoretic element and the position information pattern has reflectance with respect to invisible light, and the other has absorptiveness. The display unit performs displaying on the basis of marks read from the position information pattern by the position information reading unit.12-06-2012
20120306818SMALL-SIZED INPUT DEVICE - A small-sized input device is provided which includes: a rectangular frame-shaped optical waveguide having a rectangular hollow input-use interior that is not more than 10 cm in length and not more than 10 cm in width; and a control means provided on the outside of one of the sides of the optical waveguide. The optical waveguide and the control means are provided on the front surface of a rectangular frame-shaped retainer plate having the hollow input-use interior, and are covered with a rectangular frame-shaped protective plate. The control means includes: a light-emitting element connected to ends of light-emitting cores of the optical waveguide; a light-receiving element connected to ends of light-receiving cores of the optical waveguide; and an optical sensor for recognizing the amount (or distance) of movement of the small-sized input device.12-06-2012
20120306815OPTICAL TOUCHPAD FOR TOUCH AND GESTURE RECOGNITION - An optical touchpad including a prism having a four-sided cross section including a light entry interface, a light exit interface, a touch interface and a back interface substantially parallel to and spaced apart from the touch interface. Collimated light enters the prism through the light entry interface, is reflected from the touch interface by total internal reflection, and exits the prism through the light exit interface. A first image sensor detects the collimated light exiting from the light exit interface and a second image sensor detects the image of an object positioned over the touch interface.12-06-2012
20120306816Simplified Optical Position Sensing Assembly - The present invention relates to a simplified optical position sensing assembly, which includes a unitized optical assembly formed as a single component and a unitized optical circuit. The unitized optical assembly is attached or mounted to the unitized optical circuit. The unitized optical assembly may include a body and a single-element lens. The single-element lens can be injection-molded within a first cavity of the body so as to form a single component. An illumination window may be received within a second cavity extending from the back to the front of the body. The unitized optical circuit can include an energy source and a sensor directly connected thereto. The present invention also relates to an optical position sensing system incorporating such a simplified optical position sensing assembly and methods for manufacturing a unitized optical assembly.12-06-2012
20120306822FORCE-SENSING MODULES FOR LIGHT SENSITIVE SCREENS - A light sensitive screen includes at least one sensing element each being configured to detect a force applied to a position of the light sensitive screen and generate an electrical signal when a force is detected, and a sensor module configured to receive and process the electrical signal from the at least one sensing element. The sensor module may amplify the electrical signal from one of the at least one sensing element and generate an amplified signal, compare the amplified signal with a threshold and generate a comparing result, and generate a digital signal based on the comparing result, the digital signal including information as to whether the position of the light sensitive screen is touched.12-06-2012
20110304590TOUCH SYSTEM AND POSITIONING METHOD THEREFOR - The present invention provides a positioning method for a touch system that obtains a pair of current correct positions according to the following steps: obtaining two pairs of possible positions from a current frame to be compared with a pair of previous correct positions obtained from a previous frame; or comparing four pairs of possible positions with each other obtained from the current frame. The present invention further provides a touch system.12-15-2011
20110304592ENERGY SENSING LIGHT EMITTING DIODE DISPLAY - A display that includes energy sensors within the display itself is disclosed. An Organic Light Emitting Diode (OLED) can be made to operate both as a light emitter and as an energy detector. When forward biased with an appropriate driving signal, the OLED emits light via electroluminescence, which can be used to make a portion of an image on the display. In another mode, the OLED can detect energy by converting incoming photons or energy into an electrical signal by the photoelectric effect. By operating OLEDs in the display in both emissive and sensing modes, energy that shines on the display, such as from an outside source can be detected at the same time an image is shown. Additionally, a display including OLEDs can detect light energy generated by the display itself.12-15-2011
20110304591POSITION DETECTION DEVICE, ELECTRONIC APPARATUS, AND DISPLAY DEVICE - A display device includes a screen on which an image is displayed, and a position detection device including a light emitting section adapted to emit an irradiation light beam along the screen, a light receiving section adapted to receive a reflected light beam caused by an object reflecting the irradiation light beam, and a detection section adapted to detect position information of the object based on a light reception result of the light receiving section, wherein the position detection device has detection accuracy of the position information of the object varying in accordance with a position of the object in a direction intersecting the screen.12-15-2011
20110304587APPARATUS AND METHOD FOR ACQUIRING OBJECT IMAGE OF A POINTER - An apparatus and a method for acquiring object image of a pointer are provided. The apparatus is suitable for an optical touch system and is used for acquiring an object image of a pointer when the pointer interacts with a touch surface of the optical touch system. The apparatus includes an image sensor and a processing circuit. The image sensor is used for acquiring an image of the touch surface. When the pointer approaches the touch surface, the processing circuit compares at least a part of the information of a sensed image with a threshold value, so as to determine a comparison range. Then, the processing circuit determines another threshold value according to the image information in the comparison range. Afterwards, the processing circuit compares the image information in the comparison range with the aforementioned another threshold value, so as to acquire an object image of the pointer.12-15-2011
20110304588OPTICAL TOUCH SYSTEM, APPARATUS AND METHOD FOR CALCULATING THE POSITION OF AN OBJECT - An optical touch system, an apparatus and a method for calculating the position of an object are provided. The apparatus includes an image sensor and a processing circuit. The processing circuit selects at least one dot from a curve segment of a brightness distribution profile obtained from a background image, wherein the curve segment corresponds to an imaging range of an object. And the processing circuit regards the column pixel brightness value corresponding to the dot as a brightness reference value. Afterwards, the processing circuit calculates brightness difference between the brightness reference value and the column pixel brightness values corresponding to the dots of a curve segment of a brightness distribution profile obtained from a sensed image, so as to further calculate a gravity of the imaging range. After that, the processing circuit regards the gravity as a representative position of the object in the sensed image.12-15-2011
20110304586INFRARED TYPE HANDWRITING INPUT APPARATUS AND SCANNING METHOD - An infrared type handwriting input apparatus and scanning method are disclosed. The input apparatus comprises a plurality of light emitters and a plurality of light receivers aligned along one side of a sensing area of the input apparatus, a control device and a signal processing device. The control device controls the light emitters to emit light and to control the light receivers to receive the light reflected from a pointer in the sensing area. The signal processing device processes the signals generated from the light receivers and transmits the processed signals to the control device.12-15-2011
20110304589OPTICAL POSITION DETECTING DEVICE AND DISPLAY DEVICE WITH POSITION DETECTING FUNCTION - An optical position detecting device includes: a plurality of detection light source sections which includes a first light emitting element which emits a first detection light and a second light emitting element which is turned on at a timing different from a timing when the first light emitting element is turned on and emits a second detection light having a peak wavelength different from that of the first detection light; a light source driving section which turns on a part of the plurality of detection light source sections, and turns on the other part thereof; a light detecting section which detects the first detection light and the second detection light reflected by a object; and a position detecting section which detects the position of the object on the basis of the intensity of the first detection light and the intensity of the second detection light in the light detecting section.12-15-2011
20100097354LIGHT SENSING CIRCUIT, TOUCH PANEL INCLUDING THE SAME, AND METHOD OF DRIVING THE LIGHT SENSING CIRCUIT - A light sensing circuit of a touch panel includes a photodiode including an anode and a cathode; a driving transistor including a gate electrode connected to the cathode of the photodiode, a first electrode to receive a first ground voltage, and a second electrode; a first switching transistor including a first electrode connected to the second electrode of the driving transistor, a second electrode to output a data signal, and a gate electrode to receive a scan signal; a first capacitor including a first terminal connected to the cathode of the photodiode, and a second terminal; and a voltage compensating unit to apply a compensation voltage to the second terminal of the first capacitor.04-22-2010
20100271333OPTICAL TOUCH SCREEN DEVICE - An optical touch screen device includes a display panel, an infrared light source module, a number of elongated reflective plates, and an infrared image capture module. The display panel includes a display screen. The infrared light source module has a strip-shaped light output portion generally parallel with the display screen. The strip-shaped light output portion is arranged along an edge of the display screen and configured for outputting infrared light to illuminate the display screen. The elongated reflective plates are arranged along the other edges of the display screen. The reflective plates is configured for reflecting the light from the light output portion to the display screen, thereby the light from the light output portion and the reflected light cooperatively forming an infrared light field. The infrared image capture module is configured for capturing an image of the entire display screen.10-28-2010
20100245289APPARATUS AND METHOD FOR OPTICAL PROXIMITY SENSING AND TOUCH INPUT CONTROL - Systems, circuits and methods are shown for optical proximity sensing and touch input control involving mounting light sources and an optical receiver with a touch input device, activating a first light source and measuring a first reflected light signal from an object using the receiver to obtain a first measured reflectance value, activating a second light source and measuring a second reflected light signal from the object using the receiver to obtain a second measured reflectance value, determining an approximate position of the object based on the first and second measured reflectance values, determining whether the position of the object is within a predetermined proximity area to the touch input device, and activating the touch input device if the object is within the predetermined proximity area or selectively activating or scanning part of the touch input device based on the position of the object.09-30-2010
20090237376Optical Position Sensing System and Optical Position Sensor Assembly with Convex Imaging Window - An optical position sensing system includes a bezel surrounding a display, a position sensor assembly, and a processor for calculating touch locations. Prismatic film may be applied to the bezel. Each optical position sensor assembly includes a body. A lens holder holds an imaging window on a first side and a single element aspherical lens on a second side. The imaging window has an inside face shaped to form a shallow convex surface. The lens holder is mounted to a front face of the body such that the lens is aligned with an opening in the body. An optical sensor is mounted to a rear face of the body and aligned with the opening. A radiation source is positioned within the body above the lens holder and behind an illumination window. A light path separator is positioned between the illumination window and the imaging window.09-24-2009
20120098794Transmissive Body - An apparatus and method for transmitting, collimating and redirecting light from a point-like source to produce a collimated optical signal in a substantially planar form are provided. In one embodiment the apparatus is manufactured as a unitary transmissive body comprising a collimation element and a redirection element, and optionally a transmissive element. In another embodiment the apparatus is assembled from one or more components. The apparatus and method are useful for providing sensing light for an optical touch input device.04-26-2012
20110109593SEMICONDUCTOR DEVICE - An object is to reduce noise caused by variations in characteristics of photosensors provided for each pixel in a display panel having an image capturing function by the photosensors and to provide an image with high precision. A display device includes a display panel including photosensors arranged in matrix and an image processing circuit, in which the photosensors captures a black image and an image of an object; and the image processing circuit produces an image having image data (Y−X) using image data X of the black image and image data Y of the image of the object.05-12-2011
20120038593USER INPUT ARRANGEMENT AND RELATED METHOD OF MANUFACTURE - Arrangement (02-16-2012
20120038592INPUT/OUTPUT DEVICE AND HUMAN-MACHINE INTERACTION SYSTEM AND METHOD THEREOF - An input/output device and human-machine interaction system and method thereof are provided. The input/output device includes a projection module, an image capturing module and a processing module. The projection module is capable of receiving an image provided by a mobile computing device and projecting the image onto a surface. The image capturing module is capable of capturing a user's operation action on a projected image on the surface to thereby provide operation information. The processing module is electrically connected with the image capturing module for receiving and processing the operation information to thereby generate an operation command to correspondingly control the mobile computing device.02-16-2012
20120038591OPTICAL TOUCH PANEL AND COORDINATE INFORMATION CORRECTION METHOD AND DETECTING DEVICE THEREFOR - A coordinate information correction method for an optical touch panel includes: a) determining a set of to-be-corrected included angle values according to output signals received from light detectors, each of the to-be-corrected included angle values representing an included angle between a base line and a connecting line that extends from a respective one of the light detectors to a location of an object in a light curtain region; b) calculating a set of correction values, each of which is a finite order function of a respective one of the to-be-corrected included angle values; c) calculating a set of corrected included angle values from the set of to-be-corrected included angle values and the set of correction values; and d) generating corrected coordinate information associated with the location of the object in the light curtain region from the corrected included angle values.02-16-2012
20120038590TABLETOP INTERFACE SYSTEM AND METHOD THEREOF - Provided is a tabletop interface system. A tabletop input device diffuses an infrared light emitted based on at least one touch input from a user. A tabletop output device allows the diffused infrared light to pass therethrough to display content information corresponding to at least one touch point. The tabletop recognition device recognizes the at least one touch point by generating a touch image data based on the infrared light passing through the tabletop output device and generates touch point information by using the touch image data. The content server transmits the content information, which corresponds to the touch point information received from the tabletop recognition device, to at least one content client application.02-16-2012
20120038589METHOD AND APPARATUS FOR DETERMINING CONTACT AREAS WITHIN A TOUCH SENSING REGION - The invention determines the location of multiple, simultaneous contact areas on a touch sensing region using a light source and several light detectors. The invention is robust against occlusion and many of the ambiguities that can arise with multiple, simultaneous contact areas. Generally, the light source is positioned such that light emanating the light source passes across the touch sensing region, and the light detector are positioned such that at least a portion of the light source is within the field of view of each light detector. The contact areas are determined by identifying positive fans corresponding to an angular sector of the field of view of a light detector in which the view of the light source is occluded and negative fans corresponding to an angular sector of the field of view of a light detector in which the view of the light source is not occluded. The positive fans and negative fans are then additively and subtractively combined, respectively, to determine the contact areas.02-16-2012
20120038588Optical Position Input System And Method - Optical position input systems and methods determine positions of at least one pointing objects within an active touch area. At least three imager modules form images of at least one pointing objects within the active touch area. A processor computes a position of each of the at least one pointing object based upon the images formed by the at least three imager modules.02-16-2012
20110050650INTERACTIVE INPUT SYSTEM WITH IMPROVED SIGNAL-TO-NOISE RATIO (SNR) AND IMAGE CAPTURE METHOD - An input panel for an interactive input system comprises an optical waveguide; a first radiation source directing radiation into said optical waveguide, said radiation undergoing total internal reflection within said optical waveguide; a diffusion layer adjacent to and on one side of the optical waveguide, totally internally reflected light being frustrated and escaping the optical waveguide in response to pointer contacts on the diffusion layer; a second radiation source directing radiation towards another side of the optical waveguide that is opposite the one side; and at least one imaging device having a field of view looking at the optical waveguide and capturing image frames, wherein said first and second radiation sources are turned on and off in succession and wherein said first radiation source is turned off when said second radiation source is on and wherein said first radiation source is turned on when said second radiation source is off.03-03-2011
20110050649Determining the Location of Touch Points in a Position Detection System - A position detection system includes at least two optical units configured to image a space, a memory, and a processing device interfaced to the memory and the optical units. The processing device is configured to access image data from the first and second optical units and use this data to determine at least one of a current first position and a current second position representing touch points on a display. The processing device can define a polygon having at least four sides based the current first and current second positions and can access the memory to store and retrieve the polygon. If the processing device can determine only one of the current first position or the current second position based on the accessed image data, the processing device can use the previously defined polygon to estimate the other position that was not determined using the accessed image data.03-03-2011
20110050648ORGANIC LIGHT EMITTING DIODE DISPLAY AND MANUFACTURING METHOD THEREOF - An organic light emitting diode display comprises: a display panel; a touch screen panel disposed on a display surface of the display panel; a sensing unit for sensing a position through the touch screen panel; and a polarizing plate disposed on the touch screen panel, wherein the touch screen panel is attached to the display surface area of the display panel with an air layer provided therebetween.03-03-2011
20110050647TOUCH SYSTEM AND DISPLAY DEVICE COMPRISING THE SAME - Provided is a touch system. The touch system comprises: a substrate; an optical sensor module comprising a light emitting unit and a light receiving unit disposed on the bottom of the substrate to be adjacent to each other; and sensing control circuit driving the light emitting unit and sensing whether or not a user's touch is made on the substrate on the basis of a sensing signal sensed through the light receiving unit.03-03-2011
20110050646OPTICAL TOUCH APPARATUS AND OPTICAL TOUCH DISPLAY APPARATUS - An optical touch apparatus is adapted to a display apparatus. The optical touch apparatus includes at least one light source, at least one light guide unit, and at least one optical detector. The light source is disposed beside a display area of the display apparatus and capable of providing a light beam. The light guide unit is disposed beside the display area in a transmission path of the light beam and has a first surface, a second surface opposite to the first surface, and a light incident surface. The light incident surface connects the first and second surfaces. The light beam is capable of entering the light guide unit through the light incident surface and is transmitted to a sensing space in front of the display area. The optical detector is disposed beside the display area to sense an intensity variation of the light beam in the sensing space.03-03-2011
20110050645ORGANIC LIGHT EMITTING DISPLAY DEVICE WITH TOUCH SCREEN FUNCTION - An organic light emitting display device with a touch screen function, the apparatus including a first substrate including a pixel region and a nonpixel region, a second substrate disposed above the first substrate so as to be spaced apart from the first substrate, a plurality of pixel units disposed in the pixel region, and a sensor unit disposed in the nonpixel region and detecting light, where each of the plurality of pixel units includes a red subpixel, a green subpixel and a blue subpixel, and the red subpixel is arranged so as not to be adjacent to the sensor unit.03-03-2011
20110050643PASSIVE INFRARED SENSING USER INTERFACE AND DEVICE USING THE SAME03-03-2011
20110050642TOUCH SENSING ELECTROPHORETIC DISPLAY DEVICE - An image display device has touch sensing sensor components integrally distributed amongst pixel components of the device. In one embodiment, the distribution is one sensor component per one pixel component. In one embodiment, the pixel component forms a pixel portion of an image by selectively reflecting light and the sensor component is composed of a material that reflects light. More specifically, in one embodiment the light reflecting pixel component is an electrophoretic unit and the sensor component includes a layer of titanium having a color filter layer disposed below it and thus protectively covering it. Reflection of light from the light reflecting sensor layer is reduced by providing an anti-reflection layer above it. The sensor component changes resistance in response to change of local temperature or of an amount of infrared radiation impinging on it. Its resistance is measured by way of two wires connected thereto and extending through contact holes provided in the color filter layer.03-03-2011
20110050641DISPLAY MODULE - A display module is provided. The display module includes a housing, a display panel, a frame, a camera module, and a reflective strip. The display panel is disposed in the housing. The frame is disposed between the housing and the display panel to limit a position of the display panel. The camera module and the reflective strip are disposed on the frame and on a same horizontal level based on the frame. When the display panel is deformed, the camera module and the reflective strip remain on the same horizontal level.03-03-2011
20110050640Calibration for a Large Scale Multi-User, Multi-Touch System - A large scale multi-user, multi-touch system with a specialized zone-based user interface including methods for space management and spatial apportioning of audio cues. The system comprises a multi-touch display component fabricated in dimensions sufficient for at least a plurality of users and for displaying projected images and for receiving multi-touch input. The apparatus includes a plurality of image projectors, a plurality of cameras for sensing multi-touch input and the apparatus includes interface software for managing user space. The interface software implements techniques for managing multiple users using the same user interface component by allocating physical spaces within the multi-touch display component and coordinating movement of displayed objects between the physical spaces. Embodiments include a plurality of audio transducers and methods for performing audio spatialization using the plurality of audio transducers corresponding to the physical spaces, apportioning of volume levels to the audio transducers based on movement of a displayed object.03-03-2011
20090021492Light Emitting Touch Pad and Control System having the same - A light emitting touch pad includes a transparent touch sensor and a light emitting display apparatus. The transparent touch sensor is configured for sensing the position where an object touches the light emitting touch pad. The light emitting display apparatus is disposed at a side of the transparent touch sensor and configured for providing a surface light source emitting light toward the transparent touch sensor.01-22-2009
20120105380SYSTEM AND METHOD OF DETECTING CONTACT ON A DISPLAY - A system for detecting contact on a display is provided. The system comprises a planar medium associated with the display and includes at least one edge facet and opposing surfaces. The system also includes one or more optical sources operatively coupled to the at least one edge facet for transmitting an optical signal into the planar medium such that the transmitted optical signal is totally internally reflected between the at least one edge facet and opposing surfaces. An optical sensing device is positioned to substantially face at least a portion of the edge facet and adapted to detect at least one object contacting a first surface of the opposing surfaces. The optical sensing device is operative to detect a portion of the optical signal emitted from the first surface at a location corresponding to the object contacting the first surface.05-03-2012
20110163997METHOD OF DETECTING TOUCH POSITION, TOUCH POSITION DETECTING APPARATUS FOR PERFORMING THE METHOD AND DISPLAY APPARATUS HAVING THE TOUCH POSITION DETECTING APPARATUS - In a method of detecting a touch position, light is emitted. A plurality of light beams derived from the emitted light is received. The light beams have different paths from each other. The light beams are partially reflected according to a touch. The touch position is detected based on an amount of light in the received light beams. According to the present invention, the touch positions of several touching elements may be individually detected.07-07-2011
20110063253OPTICAL POSITION DETECTOR AND DISPLAY DEVICE WITH POSITION DETECTION FUNCTION - An optical position detector for optically detecting a position of a target object within a detection area, includes: a position-detecting light source unit that emits a position detection light toward the detection area to form an intensity distribution of the position detection light in the detection area; a plurality of light detectors with their central optical axes directed to different areas from each other within the detection area; and a signal processing unit that detects a position of the target object based on the result of receiving, by the plurality of light detectors, the position detection light reflected by the target object in the detection area.03-17-2011
20110063252Photo Element and Driving Method Thereof and Liquid Crystal Display - A photo element includes a capacitor, a switch thin film transistor (TFT), a charge thin film transistor, and a photo thin film transistor. A voltage is charged to the capacitor through the charge TFT, and the output voltage of the capacitor is read through the readout line. The photo-induced current will affect the output voltage of the capacitor; therefore it is employed to determine whether the photo element is touched. Later, a reverse-biased voltage is applied to the photo TFT, such that the threshold voltage and sensitivity of the photo TFT can be maintained.03-17-2011
20110316814OPTICAL DISTANCE DETERMINATION DEVICE, OPTICAL TOUCH MONITORING SYSTEM AND METHOD FOR MEASURING DISTANCE OF A TOUCH POINT ON AN OPTICAL TOUCH PANEL - An optical distance determination device includes a first image sensor, an auxiliary image sensor, and a distance measuring module. The first image sensor is for capturing a first image comprising image information of an object. The auxiliary image sensor is for capturing an auxiliary image comprising image information of the object, and a physical distance between the first image sensor and the auxiliary image sensor. The distance measuring module is for calculating pixel distance of an image formation position of the object in the first image and the auxiliary image for calculating an approximate distance between the object and the first image sensor according to the pixel distance, the physical distance, and focal lengths of the first image sensor and the auxiliary image sensor.12-29-2011
20110316812IMAGE SENSOR CONTROL OVER A VARIABLE FUNCTION OR OPERATION - A device has a variable function or operation. An image sensor system is provided for the device. The image sensor system is responsive to light rays indicative of whether an object is present on an imaging window. For example, the image sensor system may be of the frustrated total internal reflection type, the light rays detected by the image sensor system comprising reflected light from the window at locations where the object is not present. The image sensor system outputs image information indicative of the detection of the light rays. A processing circuit processes the image information to detect the presence of the object on the imaging window. A control signal is generated by the processing circuit in response to that detected presence, the control signal causing the variable function or operation of the device to vary in response to the detected presence and/or movement of the object.12-29-2011
20110057907APPARATUS AND METHOD FOR DETERMINING USER INPUT PATTERN IN PORTABLE TERMINAL - An apparatus and method for determining a user input pattern in a portable terminal. The apparatus includes a sensing unit, a pattern management unit, and an output management unit. The sensing unit includes a sensor for sensing light, and measuring a sensed value for light. The pattern management unit determines an input pattern of a user based on a measured value of the sensing unit. The output management unit performs an operation corresponding to the input pattern determined by the pattern management unit.03-10-2011
20120044212OPTICAL TOUCH PANEL - Light emitting optical waveguide cores are provided in one of opposite side portions located on opposite sides of a detection area, and light receiving optical waveguide cores are provided in the other side portion. Light beams are emitted from distal ends of the light emitting cores disposed along an inner edge of the one side portion, and received on distal ends of the light receiving cores disposed along an inner edge of the other side portion, whereby an optical lattice is defined on the detection area for detection of a touch position. The detection area includes a higher resolution detection portion defined by arranging distal ends of at least some of the light receiving cores at a pitch that is smaller than the pitch of distal ends of the other light receiving cores.02-23-2012
20100053119Input/output device - An input/output device capable of displaying a high-resolution two-dimensional image and detecting the position of an object in three-dimensional space in spite of having a low profile is provided. An input/output device includes: a display section including, in a mixed manner, image pickup regions for obtaining image pickup data of an object and a display region for displaying an image based on image data; a microlens arranged on a display surface of the display section so as to correspond to each of the image pickup regions; and a position detection section detecting position of the object based on image pickup data obtained from the image pickup regions of the display section.03-04-2010
20120044211OPTICAL TOUCH LOCATING SYSTEM AND METHOD THEREOF - An optical touch locating system and method thereof is disclosed herein. The method includes the following steps. A step is used for activating the coordinate detecting module. A step is used for calculating the distance between two optical touch apparatuses. A step is used for sequentially locating a plurality of anchor points. When indicating to detect a first anchor point, a step is used to touch one of four corners on a display device by a touch object. A step is used for sequentially detecting and locating the remaining anchor points. At final step, according to the distance between two optical touch apparatuses and the coordinates of the anchor points, the touch working area. is confirmed.02-23-2012
20120044210ELECTRONIC DEVICE WITH SLIDING TOUCH CONTROL FUNCTION AND SLIDING TOUCH CONTROL METHOD THEREOF - An electronic device with sliding touch control includes a main body, a main processing unit, and a touch sensing apparatus. The touch sensing apparatus includes a transparent panel mounted on an outer surface of the main body, a circuit board allocated under the transparent panel, a number of photoelectric sensors mounted on the circuit board, and a microprocessor electrically connected to the number of photoelectric sensors. The number of photoelectric sensors generates current signals changing with intensities of light passing through the transparent panel. The microprocessor determines whether the touch sensing apparatus is touched according to received current signals, and transmits the touch information to the main processing unit when a valid touch operation exists. The main processing unit determines a touch track according to the touch information to execute a control command corresponding to the touch track. A sliding touch control method is also provided.02-23-2012
20120044209TOUCH SCREEN PANEL - A touch screen panel includes: a touch input region; infrared ray emitters at first and second sides of the touch input region for emitting infrared rays toward infrared ray sensors disposed at third and fourth sides, respectively, of the touch input region, each of the infrared ray emitters including: a light guide plate having a light emitting surface on a side of the light guide plate facing the touch input region, V-shaped oblique grooves at an angle on another side of the light guide plate facing the light emitting surface, and a light incident surface; an infrared ray light source facing the light incident surface of the light guide plate; and a reverse prism seat between the touch input region and the light guide plate and having a light incident surface at a side facing the light guide plate and polygonal reverse prism threads on the light incident surface.02-23-2012
20120044207OPTICAL TOUCH MODULE AND OPTICAL TOUCH DISPLAY PANEL - An optical touch module and an optical touch display panel are provided. The optical touch module includes a first photo sensor, a second photo sensor, and a signal processing unit. The first photo sensor is disposed in one of the plurality of pixels of a pixel array. A first terminal and a control terminal of the first photo sensor are coupled to a first scan line. The second photo sensor has a first terminal coupled to a second terminal of the first photo sensor and outputting a sensing voltage, a control terminal coupled to the first terminal of the second photo sensor, and a second terminal receiving a first voltage. The signal processing unit is coupled to the first terminal of the second photo sensor, so as to convert the sensing voltage to a touch signal.02-23-2012
20110157096Method and Apparatus For Detecting A Multitouch Event In An Optical Touch-Sensitive Device - A touch sensitive optical control device comprising a set of light emitters 06-30-2011
20110157095Optical Control System With Feedback Control - An optical control system is described which provides for more efficient operation of an optical device. The system is operable to provide an integrated output from the detection system. Accordingly, by controlling the operating time of the detection system of the optical device it is possible to match the dynamic range of the integrated output to the operational input range of an ADC means to provide a digital output value, thereby minimising the quantisation noise of the ADC means.06-30-2011
20120206414MOBILE DEVICE - Disclosed is a mobile device comprising an acceleration detection unit for detecting acceleration relative to the device; a condition identification unit; and a power supply controller which determines, from a combination of the output of the acceleration detection unit and the output of the condition identification unit, whether or not to begin to supply power to the device.08-16-2012
20120206411LIQUID CRYSTAL DISPLAY - A liquid crystal display is disclosed. The liquid crystal display includes a liquid crystal display panel including a pixel array and touch sensors, a transparent conductive layer on one substrate of the liquid crystal display panel transmitting display light, a polarizing plate on the transparent conductive layer, a driving voltage supply circuit, and a signal transmitting unit electrically connecting the transparent conductive layer to the driving voltage supply circuit. A portion of the transparent conductive layer is connected to a ground level voltage source. The driving voltage supply circuit generates a driving voltage required to perform light sensing operations of the touch sensors during a touch period based on changes in an amount of surface charge of the transparent conductive layer depending on whether or not the polarizing plate is touched.08-16-2012
20120001873TRANSPARENT TOUCH SURFACE KEYBOARD - A transparent touch surface keyboard includes a touch screen, a transparent display screen electronically connected to the touch screen; a central processing unit; and a sensing device. The transparent display screen and the sensing device are electronically connected to the central processing unit. The sensing device senses whether user's hands are above the touch screen and in a position for using the keyboard, and sends control signals to the central processing unit. The central processing unit switches the transparent touch surface keyboard to a working state or a standby state according to the control signals.01-05-2012
20120001874INPUT/OUTPUT DEVICE AND DRIVING METHOD THEREOF - An object is to reduce power consumption. An input/output device including: a display selection signal output circuit outputting a display selection signal during a first display mode and stopping outputting the display selection signal during a second display mode; a photodetection reset signal output circuit outputting N (N is a natural number) photodetection reset signals during a first photodetection mode and outputting M (M is a natural number smaller than N) photodetection reset signals during a second photodetection mode; an output selection signal output circuit outputting N output selection signals during the first photodetection mode and outputting M output selection signals during the second photodetection mode; and a photodetector circuit being reset in accordance with a photodetection reset signal, generating data according to an intensity of light entering the photodetector circuit subsequently, and outputting the data as a data signal in accordance with the output selection signal.01-05-2012
20120001872ELECTRONIC BOOK READING DEVICE AND METHOD THEREOF - An electronic book (E-book) reading device includes a screen, a sensor module, and a processing system. The sensor module senses a finger or a stylus passing by the sensor module and determines a movement direction of the finger or the stylus. The sensor module further outputs a detection signal according to each movement direction of the finger or the stylus. The processing system controls the screen according to the detection signals.01-05-2012
20120062518Touch Sensing Systems - The invention relates to techniques for sensing of touch events near to a surface using position data from a pair of two-dimensional sensors (a camera and a quadrature detector). We describe apparatus for detecting the location of one or more objects on, or adjacent to, a surface, the apparatus comprising: an illuminator generating a generally planar fan of light above said surface; a pair of two-dimensional sensors, positioned above said surface comprising a camera, and a quadrature detector; and processing circuitry for receiving output from said sensors, and returning an estimate of said object location03-15-2012
20120062517OPTICAL TOUCH CONTROL APPARATUS AND TOUCH SENSING METHOD THEREOF - An optical touch control apparatus and a touch sensing method thereof are provided. The optical touch control apparatus comprises a light source supply module, an image sensing apparatus and a processing circuit. The light source supply module is used for supplying a light source to illuminate an object located on a plane. The image sensing apparatus is used for detecting the light of the light source reflected by the surface of the object to acquire an image. The processing circuit receives the image and calculates the object position related to the plane according to the image features of the object image in the received image and the imaging position of the object on the image sensing apparatus.03-15-2012
20120044213Optical Touch Display System - Optical touch display system includes a light source, a reflector, an image sensor, and a processing device. The light source emits light to at least one object directly and emits light to the at least one object via the reflector at the same time. Then the image sensor receives light reflected from the at least one object directly and light reflected via the reflector simultaneously to form a set of imaging objects which have similar color parameters on an image. Then the processing device produces a set of still image parameters of the image objects such as gravity centers and border boundaries. Based on the still image parameters, the processing device determines the coordinates of the least one object on the optical touch display.02-23-2012
20120044208Electronic Switch Apparatus for Vehicle - An electronic switch apparatus for a vehicle, may include a projector module implementing a plurality of switch images, a sensor module detecting locations of respective switch image by recognizing the switch images implemented by the projector module as two-dimensional images, an infrared module emitting infrared rays to areas of the switch images displayed by the projector module, and a control module for, when a specific area of the switch images may be touched, detecting coordinates of the specific area by measuring light reflected from emitted infrared rays of the infrared module, and executing an operation of a switch corresponding to the coordinates.02-23-2012
20110096033MOBILE TERMINAL - A mobile terminal comprising a case; a display within the case for displaying visual information; a sensing unit for detecting an object in proximity of the display, wherein the sensing unit comprises a proximity sensor having a plurality of light emitting devices and a light receiving device, wherein the sensing unit detects the object's location when light emitted by at least one of the light emitting devices is reflected by the object and enters the light receiving device, and wherein the sensing unit detects the object's movement pattern when lights emitted by at least one of the light emitting devices are sequentially reflected by the object and enter the light receiving device; and a controller for generating a signal corresponding to an input based on the object's detected location and movement pattern.04-28-2011
20090051672Electro-wetting display device with touch mode - An exemplary electro-wetting display device includes a first substrate, a second substrate opposite to the first substrate, a first polar liquid disposed between the first and second substrates, a second, colored, non-polar liquid disposed between the first and second substrates, and a touch system disposed adjacent to the first substrate. The second liquid is immiscible with the first liquid. The touch system is configured for sensing outside touches and locating the touching position.02-26-2009
20120206412LIQUID CRYSTAL DISPLAY - A liquid crystal display is disclosed. The liquid crystal display includes a liquid crystal display panel including a pixel array and touch sensors, a transparent conductive layer on one substrate of the liquid crystal display panel transmitting display light, a polarizing plate on the transparent conductive layer, a driving voltage supply circuit, and a signal transmitting unit electrically connecting the transparent conductive layer to the driving voltage supply circuit. A portion of the transparent conductive layer is connected to a ground level voltage source. The driving voltage supply circuit generates a driving voltage required to perform light sensing operations of the touch sensors during a touch period based on changes in an amount of surface charge of the transparent conductive layer depending on whether or not the polarizing plate is touched.08-16-2012
20120007835MULTI-TOUCH OPTICAL TOUCH PANEL - A multi-touch optical touch panel which comprises a rectangular position-detecting surface with a length L and a width W; a first set of a plurality of light-emitting element pairs configured for emitting a plurality of light beams, wherein the first set of light-emitting element pairs are arranged at various points along a first side of the position-detecting surface in a lengthwise direction; a second set of a plurality of light-emitting elements are arranged at various points along the first side at 90 degrees with reference to the first side; two reflectors arranged along two opposed sides of the rectangular position-detecting surface in the W direction; and a first set of a plurality of light-receiving element pairs configured for receiving the plurality of light beams emitted by the first set of light-emitting element pairs, wherein the first set of light-receiving element pairs are arranged at various points along a second side of the position-detecting surface opposite to the first side in a lengthwise direction; a second set of a plurality of light-receiving elements are arranged at various points along the second side at −90 degrees with reference to the second side for receiving the plurality of light beams emitted by the second set of light-emitting elements. A control circuit is configured for causing the first set of light-emitting element pairs and the second set of light-emitting elements to emit the plurality of light beams in a predetermined order to scan the position-detecting surface, and further configured for causing the first set of light-receiving element pairs and the second set of light-receiving elements to receive the plurality of light beams, thereby forming optical paths on the position-detecting surface in a grid pattern.01-12-2012
20120007834OPTICAL SYSTEM AND CLICK DETECTION METHOD THEREFOR - The present invention provides a click detection method for an optical system including the steps of: acquiring an image frame and calculating a quality parameter thereof; in an initial state, maintaining the initial state when the quality parameter is smaller than or equal to a first threshold while transferring to a first touch state and counting a count value when the quality parameter is larger than the first threshold; and in the first touch state, maintaining the first touch state when the quality parameter is larger than or equal to a second threshold while identifying the count value when the quality parameter is smaller than the second threshold and identifying a single click and transferring to the initial state if the count value is within a first predetermined range. The present invention further provides an optical system.01-12-2012
20120007833PORTABLE ELECTRONIC DEVICE AND CONTROL METHOD THEREOF - A portable electronic device and control method thereof perform an unlocking operation and several page turning operations for a display of the portable electronic device. Light intensities in several positions of the light sensors are detected in a preset time period. The portable electronic device determines whether the operating mode is a predetermined operating mode and determines whether the portable electronic device is locked by the detected light intensities. The portable electronic device unlocks the portable electronic device upon detecting the portable electronic device is locked. Furthermore, the portable electronic executes at least one page turning operation on the display unit upon detecting the portable electronic device is unlocked.01-12-2012
20110018842Touch Panel - A touch panel includes a plurality of first pixels and second pixels. Each first pixel has a light sensing component for sensing light then generating a first sensing signal and a switch. The switch contains a first end coupled to the light sensing component, a control end for receiving a first gate driving signal, and a second end for transmitting the first sensing signal according to the first gate driving signal. Each second pixel includes a pressure sensing component for sensing pressure then generating a second sensing signal and a switch. The switch contains a first end coupled to the pressure sensing component, a control end for receiving a second gate driving signal, and a second end for transmitting the second sensing signal according to the second gate driving signal.01-27-2011
20100128003LIGHT PIPE ARRAY LENS, OPTICAL FINGER NAVIGATION DEVICE WITH THE LENS AND METHOD FOR MAKING THE DEVICE - An optical finger navigation device and method for making the device uses a light pipe array lens, which includes an array of light pipes formed in a monolithic block of material. The light pipe array lens is configured to function similarly to a fiber bundle lens to transmit light through the lens using the light pipes in the monolithic block of material.05-27-2010
20120013575LIGHT IMAGE CREATION MECHANISM - An optical image creation mechanism and method is disclosed, which may comprise a screen defining a coordinate system oriented to the screen and having an origin on the screen; a light input signal detection unit, moving with respect to the screen, and which may comprise a light input signal position identifier identifying a light input signal position within the coordinate system; and a light generation unit, moving with respect to the screen, and which may comprise a light initiation mechanism initiating the display of light responsive to the light input signal position within the coordinate system. The light input signal detection unit may comprise a light input signal detector rotating about the origin of the coordinate system of the screen. The light generation unit may comprise a light emitter rotating about the origin of the coordinate system of the screen.01-19-2012
20120013576PIEZO-TYPE SCANNING APPARATUS AND TOUCH SCREEN USING THE SAME - Disclosed herein are a piezo-type scanning apparatus and a touch screen using the same. The preferred embodiments of the present invention provides the scanning apparatus including a light source; an optical fiber of which one end is connected to the light source to provide a transmission line; a support that supports the side surface of the optical fiber; and a driving body that is positioned between the support and the light source to provide driving force rotating the optical fiber using piezoelectric force, and the touch screen using the same.01-19-2012
20120056854OPTICAL WAVEGUIDE AND OPTICALTOUCH PANEL - An optical waveguide of the present invention includes a light-absorptive section formed in a recess of a clad. The light-absorptive section prevents unwanted light from traveling through the clad. The light-absorptive section absorbs light at all wavelengths (infrared light, visible light, and ultraviolet light). The light-absorptive section is located adjacent to a light-receiving element. In the case where there is a light-absorptive section, cores are encircled by the thin clad and the thin clad encircling respective cores is encircled by the light-absorptive section.03-08-2012
20120056853OPTICAL TOUCH DEVICE AND METHOD THEREFOR - In one embodiment, an optical touch device is disclosed. The device includes a housing having an opening through which a screen is exposed, light-emitting elements provided along a first side of the opening and configured to emit infrared light, and a drive unit configured to sequentially select and drive the light-emitting elements. The device further includes a detection control unit configured to output a timing signal synchronized with the timing of the driving operation of the drive unit and to detect a position of a blocking object on the screen. Further, the device includes light-receiving sensors, provided along a second side of the opening, opposite the first side of the opening, configured to be selected by the timing signal to output to the detection control unit a result of reception of the infrared light, the light-receiving sensors including different kinds of light-receiving sensors differing in a light-receiving characteristic.03-08-2012
20120056852ELECTRONIC APPARATUS AND CONTROL METHOD THEREOF - A method for controlling an electronic apparatus including a touchless interface and a control interface, comprising: detecting a first control action applied to the touchless interface; detecting a second control action applied to the control interface; and controlling the electronic apparatus to perform a corresponding function according to the first control action and the second control action.03-08-2012
20090002340Night vision touchscreen - A touchscreen system for locating an opaque object in a target region, detects interruption of light beams. Each of the touchscreens have one or more optical emitters (01-01-2009
20130155030DISPLAY SYSTEM AND DETECTION METHOD - A display system displays objects in a display region in a manner arranged in a predetermined orientation. One light-emitting element of a sensor array emits light to the objects in the predetermined orientation. The display system prestores data which associates numerical value ranges different from each other with the objects, respectively. When light reflected by a finger is received by light-receiving elements of the sensor array, the display system calculates the number of the light-receiving elements that have received the reflected light, identifies one object associated with the numerical value range including the calculated number of the light-receiving elements, from among the objects, based on the calculated number of the light-receiving elements and the stored data, and performs processing corresponding to the identified object.06-20-2013
20090135163System For Digitizing Freehand Graphics On A Printed Surface - A system for digitizing a freehand graphic. The system comprises: a base including a surface; a position-coding pattern printed on the surface and detectable by an optical sensor; a first area of the surface; and a second area of the surface. The system further comprises a drawing device including an optical sensor for detecting a position in the position-coding pattern; and a transmitter for transmitting interaction data to a processor. The interaction data identifies the detected position. The processor is adapted to determine if the detected position is in the first area or the second area. If the detected position is in the first area of the surface, then the processor interprets the position as a point in the freehand graphic. If the detected position is in the second area of the surface, then the processor interprets the position as a selection of a property for the freehand graphic.05-28-2009
20090135162System and Method For Detecting the Location, Size and Shape of Multiple Objects That Interact With a Touch Screen Display - A system, method and apparatus is disclosed for detecting the location, size and shape of an object, or multiple objects, placed on a plane within the touch sensor boundaries of a touch screen (05-28-2009
20120206416Interactive Display - An interactive display device (08-16-2012
20120206413DISPLACEMENT DETECTION SYSTEM OF AN OPTICAL TOUCH PANEL AND METHOD THEREOF - At a first time, a first image sensor and a second image sensor capture a first image and a second image including images of an object respectively. At a second time, the first image sensor and the second image sensor capture a third image and a fourth image including images of the object respectively. A coordinate calculation device calculates a first coordinate of the object at the first time according to the first image and the second image, and a second coordinate of the object at the second time according to the third image and the fourth image. A coordinate correction device calculates a displacement between the first time and the second time according to the first coordinate and the second coordinate, and corrects an output coordinate of the object at the second time according to the displacement.08-16-2012
20120068971TOUCH-SENSITIVE DISPLAY WITH OPTICAL SENSOR AND METHOD - An electronic device includes a touch-sensitive display and a sensor configured to detect a force that results in depression of the touch-sensitive display. The sensor includes an optical device that receives a reflection of an optical signal, wherein the force affects the reflection.03-22-2012
20120068970TOUCH-SENSITIVE DISPLAY WITH DEPRESSION DETECTION AND METHOD - A device includes a touch-sensitive display and a sensor configured to detect a force that results in depression of the touch-sensitive display. The sensor includes one or more wavelength selective optical carriers that carry optical signals. The force affects one or more optical paths of the optical signals.03-22-2012
20120154338TOUCH APPARATUS WITH SEPARATED COMPARTMENTS - A touch-sensitive apparatus for determining a location of at least one object on a touch surface. The touch-sensitive apparatus extends in a direction of depth and comprises a light transmissive panel, a display arranged behind the light transmissive panel, and a first compartment and second compartment arranged behind the display. Light from a light emitter arrangement in the first compartment is introduced into the light transmissive panel for propagation by internal reflection. The light is thereafter coupled out to be received by a light detection arrangement in the second compartment. The first and second compartments are separated, such that light from the light emitter arrangement is prevented from reaching the light detection arrangement without first having propagated in the light transmissive panel.06-21-2012
20120154337Semiconductor Device and Driving Method Thereof - A semiconductor device with high definition, which includes a plurality of sets each including a photosensor and a display element including a light-emitting element arranged in a matrix is provided, wherein a power supply line electrically connected to the display element also serves as a power supply line electrically connected to the photosensor. Thus, the semiconductor device with high definition can be provided without decreasing the width of each power supply line. Thus, the definition of the semiconductor device can be improved while securing the stability of the potential of the power supply line. The stability of the potential of the power supply line leads to the stability of the driving voltage of the display element and the stability of the driving voltage of the photosensor. Accordingly, the semiconductor device with high definition, high display quality, and high accuracy of imaging or detection of an object can be provided.06-21-2012
20120154336OPTICAL TOUCH INPUT DEVICE AND DRIVING METHOD THEREOF - Disclosed are an optical touch input device which divisionally adjusts optical output of a light emitting unit before and during a touch operation to reduce power consumption, and a driving method thereof, the optical touch input device includes a display panel, a plurality of infrared light emitting elements disposed on two adjacent sides of the display panel, a lens unit disposed on the remaining two adjacent sides of the display panel and reflecting light emitted from the infrared light emitting elements, a light receiving unit disposed on the two adjacent sides of the display panel, and a touch control unit including a touch coordinate calculation unit to calculate a set of coordinates of a touch point and a light emission control unit to divide optical outputs of the infrared light emitting elements into optical output during touch and optical output during non-touch and to lower the optical output during non-touch.06-21-2012
20120154335PHOTOELECTRIC ELEMENT, DISPLAY UNIT AND METHOD FOR FABRICATING THE SAME - A photoelectric element including a transparent bottom electrode, a photosensitive layer, a first electrode, a second electrode and a transparent top electrode is provided. The photosensitive layer is located above the transparent bottom electrode. The first electrode and the second electrode are disposed on the photosensitive layer. The transparent top electrode is located above the photosensitive layer.06-21-2012
20120169667ELECTRONIC DEVICE AND POWER CONTROL METHOD THEREOF - An electronic device includes a main control system, a power key, a touch screen, and a touch screen control unit. The touch screen includes a plurality of infrared emitters, a plurality of infrared receivers and an infrared light grid comprising an infrared light beam passing through the power key. The touch screen control unit includes a scan controlling module, a detecting module, and a power controlling module. The scan controlling module periodically scans the infrared light beam passing through the power key. The detecting module determines whether a blocked time of the infrared light beam passing through the power key reaches a first predetermined time period. The power controlling module powers on or off the main control system when a time of blocking the infrared light beam passing through the power key being blocked reaches the first predetermined time period. A related method is also provided.07-05-2012
20120249478OPTICAL TOUCH-CONTROL SYSTEM - An optical touch-control includes: four light-guide modules cooperating to define a touch-control zone, each of the light-guide modules including a light-guide strip that has a light-entry surface oriented toward a respective one of first and second ones of corners defined by the light-guide modules, and a light-exit surface that is oriented toward the touch-control zone; two light-emitting modules disposed in the first one of the corners and two light-emitting modules disposed in the second one of the corners, each of the light-emitting modules being oriented toward the light-entry surface of a corresponding one of the light-guide modules, light that enters each of the light-guide modules via the light-entry surface thereof exiting from the light-guide module via the light-exit surface thereof; and three image acquisition modules disposed respectively in the first and second ones of the corners and a remaining one of the corners, and oriented toward the touch-control zone.10-04-2012
20110090177OPTICAL TOUCH SYSTEM - An optical touch system includes a non-visible light source, a screen, a first and second polarizing elements, and an optical detector. The non-visible light source emits a non-visible beam. A part of the non-visible beam passes through the screen disposed in a light path of the non-visible beam. The touch object reflects the part of the non-visible beam into an object beam when a touch object approaches or touches the screen, and the object beam passes through the screen. The first polarizing element is disposed in the light path of the non-visible beam and between the non-visible light source and the screen. The optical detector is disposed in a light path of the object beam, and senses the object beam. The second polarizing element is disposed in the light path of the object beam passing through the screen and between the screen and the optical detector.04-21-2011
20110090176DETERMINING THE LOCATION OF ONE OR MORE OBJECTS ON A TOUCH SURFACE - A device operates on output signals from a light sensor arrangement in a touch-sensing apparatus to determine a position of an object on a touch surface. The apparatus includes a light transmissive panel that defines the touch surface and an opposite surface. A light source arrangement provides sheets of light inside the panel, wherein each sheet comprises light that propagates by internal reflection between the touch surface and the opposite surface from one or more incoupling points to a set of outcoupling points. The light sensor arrangement generates the output signals, which represent light reaching the outcoupling points. The apparatus is configured such that an object touching the touch surface locally attenuates at least two sheets of light. To determine the position, the device identifies, in the output signals, a set of signal profiles originating from said object. The device determines at least part of an attenuated light path across the panel based on each signal profile, and identifies the position of the object on the touch surface based on the thus-determined attenuated light paths. In determining the attenuated light path, the device applies a predetermined width function which is representative of a dependence of signal profile width on distance to the incoupling point due to light scattering caused by at least one of the touch surface and the opposite surface.04-21-2011
20110102378ELECTRONIC APPARATUS FOR PROXIMITY SENSING - An electronic apparatus controls to sense a particular direction motion in directions detectable by a proximity sensor, which senses proximity and motion directions of a subject. Thus, a user can utilize the proximity sensor with decreased recognition error and a high recognition rate as a user interface of the electronic apparatus.05-05-2011
20110102374DETECTING THE LOCATION OF AN OBJECT ON A TOUCH SURCACE - An apparatus is controlled to detect a location of an object on a touch surface of a panel. An input scanner arrangement introduces at least two beams of radiation into the panel for propagation by internal reflection, and sweeps the beams inside the panel across a sensing area. An output scanner arrangement is synchronized with the input scanner arrangement so as to receive the beams from the input scanner arrangement while they are swept across the sensing area and to direct the beams onto at least one radiation detector. Thereby, each beam is introduced and received on opposite ends of the sensing area. A data processor is connected to the radiation detector and operated to identify the location based on an attenuation of the beams caused by the object touching the touch surface within the sensing area.05-05-2011
20110102372Multi-touch and proximate object sensing apparatus using wedge waveguide - A multi-touch and proximate object sensing apparatus using a wedge waveguide is provided. A multi-touch and proximate object sensing apparatus may sense a touch location or a target location on a display panel using a light which is reflected by an object located on the display panel. A camera in the multi-touch and proximate object sensing apparatus may sense the touch location or the target location from the light reflected by the object.05-05-2011
20110102376Image-Based Coordinate Input Apparatus and Method Utilizing Buffered Imates - The invention provides an image-based coordinate input apparatus and method for detecting positions of N objects on a coordinate input region at a detecting interval where N equals to 1 or 2. According to the invention, starting at the start of the detecting interval, successive first images at a first view and successive second images at a second view relative to the N objects and a background of the perimeter of the coordinate input region are captured and buffered. The apparatus and method according to the invention judges the number of the N objects and calculates the positions of the N objects on the coordinate input region at the detecting interval in accordance with the buffered successive first images and the buffered successive second images.05-05-2011
20110102375OPTICAL TOUCH MODULE - An optical touch module includes a display panel, an optical sensor and a light emitting unit. The optical sensor is disposed on a corner of the display panel. The light emitting unit is disposed on the optical sensor and includes a light emitting member and a compensating member. The light emitting member emits light with a first light strength along a first direction and light with a second light strength along a second direction, wherein the first light strength is greater than the second light strength. The compensating member is disposed on a side of the light emitting member. After the lights pass through the compensating member, the second light strength is increased.05-05-2011
20110102371Optical Touch Panel - Disclosed herein is an optical touch panel, which includes a display panel, at least one emitting member and at least one detector. The emitting member includes a reflector, a prism sheet and a light source. The emitting member is arranged along and above a portion of the peripheral of the display panel. The prism sheet has a plurality of prisms thereon, and is capable of directing the light emitted from the light source toward and across the display area. The detector is operable to receive and detect the light emitted from the emitting member. While an object appears on the display area, a position of the object may be determined by processing the light signal detected by the detector.05-05-2011
20120256883DISPLAY DEVICE INCLUDING OPTICAL SENSORS - In a display device with optical sensors, a mode control portion (10-11-2012
20120256882TOUCH SURFACE WITH IDENTIFICATION OF REDUCED PERFORMANCE - A device is configured to process data from a touch-sensitive apparatus for the purpose of identifying a reduced performance of components in the apparatus. The apparatus may be an FTIR system that comprises a light transmissive panel, an illumination arrangement for introducing light into the panel, and a light detection arrangement for receiving the light propagating in the panel and for measuring the energy of the received light. The device comprises a processor unit which is configured to obtain a signal comprising a time series of signal values that represent the energy of the light received by the light detection arrangement; calculate a parameter value representing a temporal variability of the signal values in the signal; and identify, based on the parameter value, a reduced performance of any of the illumination arrangement and the light detection arrangement. The temporal variability may be calculated to represent one of an absolute noise level and a signal-to-noise ratio of the signal, and enables the reduced performance to be identified while objects touch the light transmissive panel.10-11-2012
20120256881DISPLAY DEVICE, DISPLAY METHOD, DISPLAY PROGRAM, RECORDING MEDIUM - A display device (10-11-2012
20120313896INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AND PROGRAM - An apparatus includes a sensor configured to detect an object in a space and a display control unit configured to control a display unit to display a reference object such that the reference object appears to be located in the space.12-13-2012
20120120029DISPLAY TO DETERMINE GESTURES - A display system including a panel 05-17-2012
20120120025ELECTRONIC DEVICE AND METHOD FOR TEXT INPUT - An input text correcting method is applied to an electronic device. The method includes detecting whether a display is touched, recording sound generated by friction between a touching finger and the display when the display is being touched, comparing the recorded sound with the one or more standard sounds. Determining a touch operation on a touch area is an erasing operation and further determining display text in the touch area when the recorded sound matches the one or more standard sounds, and erasing the display text in the touch area. An electronic device for implementing the input text correcting method is also provided.05-17-2012
20120120027METHOD AND DEVICE FOR CONTROLLING A DATA PROCESSING SYSTEM - A method and a device for controlling a data processing system is provided. A light beam is emitted from a pointing device to a control surface which is equipped with one or more optical position detectors connected to the data processing system. The data processing system is influenced in accordance with the impact point of the light beam on the control surface. In order to be able to input different characters using the pointing device independently from where the light beam emitted by the pointing device is currently pointing, the light intensity emitted by the pointing device to the control surface oscillates in a pulse sequence characteristic for individual characters. The optical position detector is a flat luminescence optical wave guide with local photoelectric sensors enabling it to achieve the required high resolution. In a further embodiment, the identity of a pointing device is coded in the pulse sequence, enabling a clear distinction of several input devices.05-17-2012
20120120026OPTICAL TOUCH DEVICE AND LIGHT SENSING MODULE THEREOF - An optical touch device includes at least a light sensing module disposed beside the touch area. The light sensing module includes a sensing unit, a lens component and at least a reflecting member and. The sensing unit has a plurality of sensing regions. Each of the sensing regions has a field of view. The at least a reflecting member is disposed in the front of at least one of the sensing regions to turn the field of view of the corresponding sensing region. The lens component includes a first substrate and a plurality of lenses. The first substrate is disposed between the at least a reflecting member and the sensing unit. The lenses are assembled with the first substrate and respectively disposed in the front of the sensing regions. The optical touch device is adapted to be applied to an electronic product. Moreover, two light sensing modules are provided.05-17-2012
20120120024TOUCH SYSTEM AND OPTICAL TOUCH SYSTEM WITH POWER-SAVING MECHANISM - A touch system and an optical touch system with a power-saving mechanism are presented. The touch system includes a sensing module and a processing module electrically connected to the sensing module; the optical touch system includes an optical sensing module and a processing module electrically connected to the optical sensing module. The processing module modulates a working frequency and/or a working voltage of the processing module according to a touch point count on a touch region, a preset function of the processing module, and/or an imaging count detected by the optical sensing module, so as to decrease a power consumption of the processing module. An electronic device equipped with such system may not only dynamically adjust the working frequency and/or the working voltage of the processing module, but also can determine a working frequency and/or a working voltage satisfying a report rate through an input of the system.05-17-2012
20120120023TOUCH-SCREEN DISPLAY APPARATUS AND COVER LENS AND ASSEMBLING METHOD THEREOF - A touch screen display apparatus and a cover lens and an assembling method thereof are disclosed. The apparatus comprises the cover lens, a touch panel, a display panel and a backlight module. The cover lens comprises a plate body, a display area and a plurality of engage elements. The engage elements are disposed on one side of the plate body and around the display area for engaging with the backlight module. In the assembling method of the apparatus, the touch panel and the display panel are firstly disposed on the cover lens, and then the backlight module is engaged with the cover lens.05-17-2012
20120120030Display with an Optical Sensor - A three dimensional optical sensor 05-17-2012
20120120028OPTICAL DETECTION SYSTEM AND PROGRAM - An optical detection system includes a detection part that detects object information as information of an object based on a light reception result of reflected light by reflection of irradiation light on the object, and a processing part that performs processing based on the object information, and the processing part acquires reflectance information of the object as the object information and performs processing of a command designated by the object based on the acquired reflectance information.05-17-2012
20120162141TOUCH SCREEN DEVICE AND PLASMA DISPLAY APPARATUS HAVING THE SAME - A touch screen device includes a panel disposed in a front surface of a plasma display panel and having a plurality of transmitting electrodes and receiving electrodes intersecting in a grid pattern; a transmitter that applies a driving signal to the transmitting electrodes; and a receiver receiving a response signal and outputs detection data for each intersection between electrodes, the response signal being output from the receiving electrodes in response to the driving signal applied to the transmitting electrodes. A controller obtains a touch position based on detection data for each intersection, the data being output from the receiver; and a maintenance discharge detector detects a maintenance discharge period of the plasma display panel. The controller, based on a detection result of the maintenance discharge detector, obtains the touch position based on the detection data for each intersection during a period excluding the maintenance discharge period.06-28-2012
20100289772TOUCH-SENSITIVE DEVICE AND METHOD - Techniques are generally described for touch-sensitive devices with biometric information determination capabilities. The touch-sensitive device may include one or more of a transmitter, a receiver, and a processor. The transmitter may be configured to emit light towards a surface of the touch-sensitive device and the receiver may be configured to receive reflected light from a touch to the touch-sensitive device. The processor may be arranged to receive signals from the receiver and determines biometric information, and in some examples location of touch, based on the signals.11-18-2010
20100245287SYSTEM AND METHOD FOR CHANGING TOUCH SCREEN FUNCTIONALITY - A system and method changes touch screen functionality based on whether a user is detected during camera operation. A first camera generates a video signal containing a representation of at least a portion of a scene within a field of view of the first camera. A controller analyzes the video signal to determine whether one or more physical features of a user of the electronic device are present within the field of view of the first camera. A touch input device includes one or more touch points for receiving user input, each touch point being associated with controlling a respective one of a plurality of functions of the second camera. At least one of the touch points is associated with controlling a shutter function of a second camera, and a total number of touch points is dependent upon a result of the video signal analysis made by the controller.09-30-2010
20100245291WRITING APPARATUS - A writing apparatus includes: a voltage application unit that applies a voltage to a display medium whose display changes according to an irradiation of light and an applied voltage; an optical output unit that irradiates light toward the display medium; and a controller that (i) receives a position signal that has been output from an apparatus upon contact with an input device, the position signal indicating a position of the contact with the input device, (ii) specifies, based on the received position signal, a position on the display medium at which a display is to be changed, and (iii) controls the optical output unit so that light is irradiated toward the specified position on the display medium for a predetermined time period.09-30-2010
20100245290Display Apparatus - A control unit activates a touch sensor according to a predetermined state, for example, an open or closed state of a casing or a side key depressed state and changes, after the elapse of time for performing calibration (about 500 ms), the touch sensor to a state in which contact operation by the touch sensor can be performed. On the other hand, the control unit causes a sub-display unit to display a predetermined rendered image, for example, a character string “touch sensor is operable.” after the elapse of the time for performing calibration.09-30-2010
20100245292OPTICAL DETECTION APPARATUS AND METHOD - An optical detection apparatus includes a scanning device, a sensor, and a distinguishing module. The scanning device is positioned to scan a detection region with a scan light beam, in which the incident angle of the scan light beam varies with time. The sensor is positioned to sense a plurality of reflected scan light beams respectively generated by a plurality of actual touches within the detection region. The distinguishing module is operative to distinguish the actual touches from a plurality of ghost touches according to time signals upon which the plurality of reflected scan light beams are sensed by the sensor.09-30-2010
20100245288Touch Tunnels - A touch screen that operates by conducting an environmental change—e.g heat, radiation such as light, or RF environment, to the other side where it can be detected. The shape of the actuating device can also be detected and used for analyzing whether to allow the actuation. One embodiment uses nano fibers or nano tubes to conduct the environmental change from the front side to the back side.09-30-2010
20100245293POSITION DETECTING DEVICE AND ELECTRO-OPTICAL DEVICE - An optical position detecting unit can be configured at low cost and so as to have lower power consumption. A position detecting device includes a light guide plate, multiple light sources for position detection, a photosensor, a light source control unit that switches between a first driving mode and a second driving mode, the first driving mode being a mode in which discharged light intensities of the multiple light sources for position detection are gradually decreased toward one side of an arrangement direction of the multiple light sources for position detection and in which emitted light intensities of the position detection light beams emitted from the light emitting face exhibit a first light emission distribution tilted toward the one side of the arrangement direction, the second driving mode being a mode in which discharged light intensities of the multiple light sources for position detection are gradually decreased toward another side opposite the one side of the arrangement direction and in which emitted light intensities of the position detection light beams emitted from the light emitting face exhibit a second light emission distribution tilted toward the other side of the arrangement direction, and a position information derivation unit that derives position information regarding the object to be detected along the arrangement direction on the basis of output components of the photosensor respectively attributable to the first light emission distribution and the second light emission distribution.09-30-2010
20120313895TOUCH SCREEN - A method for determining the location of an object on a touch panel is provided. Initially, a pulse of terahertz radiation is transmitted through a touch panel, which formed of a dielectric material such that the pulse generates a evanescent field in a region adjacent to a touch surface of the touch panel. A reflected pulse is generated by an object located within the region adjacent to the touch surface of the touch panel, and a position of the object on the touch surface of the touch panel is triangulated at least in part from the reflected pulse.12-13-2012
20120127127SINGLE-CAMERA DISPLAY DEVICE DETECTION - Various embodiments related to determining a distance of an object from a surface of an interactive display device are disclosed herein. For example, one disclosed embodiment provides a method comprising, directing infrared (IR) light to the object above the surface which is reflected by the object back to the interactive display device, and refracting IR light reflected from the object into two rays travelling in different directions based on a polarization state of the reflected IR light. The method further comprises switching a polarization state of an LCD device to allow one of the two refracted rays to pass through the LCD device, and receiving, at a detector, the one of the two refracted ray that passes through the LCD device. Further, the method comprises estimating a distance of the object from the surface based on triangulation.05-24-2012
20120127129Optical Touch Screen System and Computing Method Thereof - An optical touch screen system includes a sensing device and a processing unit. The sensing device includes first and second sensors, each generating an image. The images include the image information of a plurality of objects. The processing unit generates a plurality of candidate coordinates according to the image information and selects a portion of the candidate coordinates as output coordinates according to an optical feature of the image information.05-24-2012
20120127128HOVER DETECTION IN AN INTERACTIVE DISPLAY DEVICE - Embodiments are disclosed that relate to hover detection in interactive display devices. One embodiment provides an interactive display device comprising a display panel configured to display an image on an interactive surface, an imaging optical wedge disposed adjacent to the display panel, an image sensor configured to capture an image of an object located in front of the interactive surface and spaced from the interactive surface by capturing the image through the imaging optical wedge, a logic subsystem, and a data-holding subsystem comprising instructions executable by the logic subsystem to operate the display panel and the image sensor, and to detect a hover input based upon one or more images received from the image sensor.05-24-2012
20120162142TOUCH-SENSITIVE SYSTEM AND METHOD FOR CONTROLLING THE OPERATION THEREOF - A touch-sensitive system comprises a light transmissive panel defining a touch surface and an opposite surface; an illumination arrangement comprising emitters configured to introduce light into the panel for propagation in the panel in an emission pattern; a light detection arrangement comprising detectors configured to receive the light propagating in the panel. A control unit is arranged to control the operation of the touch-sensitive system. The control unit executes a control method to monitor the light received in the light detecting arrangement for detection of touches on the touch surface, the touches attenuating the light propagating in the panel. The control method also selects a mode for the emission pattern in dependence of the occurrence of touches on the touch surface and controls the emission pattern in accordance with the selected mode.06-28-2012
20120162140METHOD AND APPARATUS FOR USER INTERACTION USING PATTERN IMAGE - A user interaction apparatus using a pattern image includes: an image output unit for outputting a general image on a display region; a laser radiating unit for radiating laser beams for a pattern image; a pattern image forming unit for forming the pattern image by using the laser beams; a pattern image output unit for outputting the pattern image by overlapping the same on the display region of the general image; and an image acquiring unit for capturing the pattern image output on the display region. The apparatus further includes: an image recognizing unit for recognizing a user input by performing an image processing on the pattern image captured by the image acquiring unit.06-28-2012
20120162139METHOD FOR COMPENSATING TIME DIFFERENCE BETWEEN IMAGES AND ELECTRONIC APPARATUS USING THE SAME - A method for compensating time difference between images and electronic apparatus using the same method are provided. Input images are received by a plurality of image capturing units respectively. Each input image is checked to see whether a reference area and a reference area background are the same. When the reference area of the input image received from one of the image capturing units is not the same as the reference area background, a compensation image number is accumulated, and other input images are received continually until the reference area of each input image received from the image capturing unit is not the same as the reference area background. Afterwards, time difference between the input images received from a plurality of image capturing units is compensated according to the compensation image numbers.06-28-2012
20120162137ELECTRONIC DEVICE WITH TOUCH INPUT FUNCTION - The present disclosure provides an electronic device with touch input function. The device includes a display, a processor, and an infrared controlling module arranged in the frame of the display. The controlling module includes a quadrant-shaped main body with an arc sidewall perpendicular to the surface of the display. At least one infrared module, including a vertically separated emitter and receiver, is disposed at the sidewall. The emitter emits infrared rays substantially in a plane or curtain which is perpendicular to the display and the sidewall respectively. One infrared ray may be blocked and reflected by an object to the infrared receiver when the object touches the screen and the processor determines by triangulation the spot which has been touched.06-28-2012
20120162136OPTICAL TOUCH PANEL AND METHOD OF DETECTING TOUCH POINT POSITIONS ON AN OPTICAL TOUCH PANEL - An optical touch panel and a method of detecting touch point positions on an optical touch panel are provided. The optical touch panel includes a processing unit, and at least three optical detectors divided into at least two detector groups. Each of the optical detectors is configured to output a signal indicating intensities of light detected thereby, and is associated with a detection range. The processing unit is configured to receive the signals from the optical detectors, to determine which of the optical detectors detect touch points within the respective detection range according to the signals received by the processing unit, and to obtain an optimum set of coordinates for at least one of the touch points with respect to an optimum detector group which is one of the detector groups formed by the optical detectors that detect the touch points.06-28-2012
20100214270Light guide module, optical touch module, and method of increasing a signal to noise ratio of an optical touch module - A light guide module is applied in an optical touch module. A focusing component of the light guide module focuses the light emitted from a light guide component of the light guide module, so that all the light emitted from the light guide component can be convergently distributed in a touch area of the optical touch module. In this way, the light provided by a lighting component of the optical touch module can be effectively utilized, and the signal to noise ratio of the received signal of a sensor of the optical touch module increases. Therefore, the optical touch module can determines the location of the finger or the contacting object more correctly.08-26-2010
20100207912DETECTION MODULE AND AN OPTICAL DETECTION SYSTEM COMPRISING THE SAME - Disclosed herein are optical detection systems and modules thereof. The optical detection system is used for determining a location where an object contacts a detection area.08-19-2010
20100207909DETECTION MODULE AND AN OPTICAL DETECTION DEVICE COMPRISING THE SAME - Disclosed herein includes a module and an optical detection device comprising the same for determining a touch position on a screen caused by an object, such as a finger of a user or a stylus pen.08-19-2010
20100207911Touch screen Signal Processing With Single-Point Calibration - A coordinate detection system can comprise a display screen, a touch surface corresponding the top of the display screen or a material positioned above the screen and defining a touch area, at least one camera outside the touch area and configured to capture an image of space above the touch surface, and a processor executing program code to identify whether an object interferes with the light from the light source projected through the touch surface based on the image captured by the at least one camera. The processor can be configured to carry out a calibration routine utilizing a single touch point in order to determine a plane corresponding to the touch surface by using mirror images of the features adjacent the touch surface, images of the features, and/or based on the touch point and a normal to the reflective plane defined by an image of the object and its mirror image.08-19-2010
20110181552PRESSURE-SENSITIVE TOUCH SCREEN - A pressure-sensitive touch screen including a housing, at least one light receiver rigidly mounted in the housing, a display flexibly mounted in the housing substantially above the at least one receiver, which depresses in response to pressure of a touch, and a calculating unit connected to the at least one light receiver for receiving outputs indicating amounts of received light by the at least one receiver, and for determining that the display is being depressed based on an increase in an output of the at least one receiver.07-28-2011
20110181553Interactive Projection with Gesture Recognition - An apparatus determines a cursor position in an illumination field of a projector. An obstruction is detected in the illumination field. The cursor position is determined as the point on the obstruction furthest from where the obstruction crosses a border of the illumination field. A distance to the point on the obstruction is determined and compared to a distance to a point not on the obstruction. Gestures are recognized as a function of movement of the obstruction and the determined distances.07-28-2011
20110181551INPUT METHOD FOR SURFACE OF INTERACTIVE DISPLAY - An interactive display system configured for detecting an object or user input provided with an object. The system includes a display surface on which graphic images are displayed, one or more scanning light sources configured for scanning the interactive display surface, and a light detector configured for detecting light reflected from an object that is adjacent to or in contact with the interactive display surface. A computing system storing machine instructions is in communication with the scanning light source and the light detector. When executed, the machine instructions cause the computing system to illuminate the interactive display surface with the scanning light source, to detect light with the light detector that is reflected from an object after illumination with the light source, and to generate an output signal based on the detected light that has been reflected from an object on or adjacent to the interactive display surface.07-28-2011
20120212456APPARATUS AND METHOD FOR A FOLDED OPTICAL ELEMENT WAVEGUIDE FOR USE WITH LIGHT BASED TOUCH SCREENS - A folded optical element waveguide that allows a minimum width bezel to be used around the perimeter of a light-based touch screen display. The apparatus and method includes a touch screen and a waveguide substrate provided adjacent the touch screen. The waveguide substrate includes a plurality of waveguides and a plurality of optical elements provided adjacent the touch screen. The waveguides include an internally reflective surface to reflect light perpendicular to the surface of the touch screen. The emitting and detecting waveguides are thus folded and provided around the side edges of the display. As a result, the width of the bezel around the display can be minimized.08-23-2012
20120212451OPTICAL TOUCH DETECTION - Optical touch detection is provided by an interactive display device including an elastomer layer, a reflector configured to transmit light having a first characteristic and to reflect light having a second characteristic, and a display positioned to output modulated light having the first characteristic through the elastomer layer and the reflector as a display image. The interactive display device further comprises a test light source positioned to output light having the second characteristic through the elastomer layer for reflection off of the reflector, and a sensor configured to receive light having the second characteristic reflected from the reflector.08-23-2012
20120299879OPTICAL TOUCH SCREEN - The present invention relates to an optical touch screen which can recognize touch coordinates when the screen is touched by a finger, a touch pen, or the like. The optical touch screen comprises units for generating infrared light sources. A control unit calculates coordinates of an object being touched on the touch screen based on data detected by the infrared cameras.11-29-2012
20120133616CREATIVE DESIGN SYSTEMS AND METHODS - Creative design systems and methods are disclosed. In one embodiment, a creative design system is provided. The creative design system comprises a high resolution display, an interactive stylus that includes a transmitter at a tip of the interactive stylus that transmits an encoded signal associated with the interactive stylus and a plurality of sensors that track movement of the interactive stylus over the high resolution display by capturing and decoding the transmitted encoded signal as the stylus moves over the high resolution display. A creative design controller is configured to display sketches of context in response to the tracking of the movement of the interactive stylus over the high resolution display.05-31-2012
20120299876ADAPTABLE PROJECTION ON OCCLUDING OBJECT IN A PROJECTED USER INTERFACE11-29-2012
20120133618DISPLAY DEVICE WITH TOUCH SENSOR FUNCTIONALITY, AND LIGHT-COLLECTING/BLOCKING FILM - A display device with touch sensor functionality with an enlarged distinction margin between the touch state and the non-touch state is provided. The display device with touch sensor functionality includes a light-collecting/blocking film (05-31-2012
20120133617APPLICATION USING A SINGLE PHOTON AVALANCHE DIODE (SPAD) - An control device may control an associated electronic device and parameter for the same. The control device may include a proximity detector. The proximity detector may include a single photon avalanche diode (SPAD). The proximity detector may be configured to control the electronic device and change the parameter.05-31-2012
20100182280OPTICAL COORDINATE INPUT APPARATUS - In an optical coordinate input apparatus, beams emitted from one light emitting element are simultaneously guided through a plurality of cores provided at a waveguide to edges on Y-side and X-side of light emitting sides of an operational area, a light receiving element group includes light receiving elements corresponding respectively to cores aligned on Y-side of light receiving sides and light receiving elements corresponding respectively to cores aligned on X-side of the light receiving sides of the operational area, a scan is performed on each of the light receiving elements sequentially so as to detect presence or absence of a light shielding signal, and a scan time for the scan of all the light receiving elements included in the light receiving element group is set to be not more than 1 ms.07-22-2010
20120249485INFRARED TOUCH SCREEN - This invention provides an infrared touch screen, comprising: a touch detecting region; a plurality of edges containing at least a first edge and a second edge, wherein the first edge and the second edge are opposite to each other, there are infrared emitters and infrared receivers fixed on the first edge and there are infrared emitters and infrared receivers fixed on the second edge; and a phase managing mechanism configured to control the phase alternation of the infrared touch screen which has a plurality of phases containing at least a first phase and a second phase. With the structure change and phase managing mechanism application in this infrared touch screen, the light interference caused by varying ambient light can be reduced or eliminated effectively.10-04-2012
20120249484COORDINATE SENSOR AND DISPLAY DEVICE - A coordinate sensor of the present invention includes light emitting diodes (10-04-2012
20090058833Optical Touchscreen with Improved Illumination - In an optical touch display system, light from a primary source can be retroreflected to a detector in the absence of an object in the detection area. When an object is present, its position can be triangulated based on the direction of its shadows at the detectors. Accuracy can be improved with a secondary light source positioned off-axis from the primary light sources so that minimal light from the secondary source is retroreflected to the detectors. Instead, when an object is present, light from the secondary source may be reflected directly from the object. Each detector signal representing light due to the primary light source can be corrected to remove light reflected directly from the object based on identifying and removing a signal component representing light from the secondary light source. In some embodiments, this is facilitated by phasing the primary and secondary light sources.03-05-2009
20090058832Low Profile Touch Panel Systems - A low profile touch display can be provided, namely one including an optical detection system with the bulk of the electronics and optics positioned partially or completely below the detecting plane surface. The light source and optical detection system components can be configured so that the exit and entry apertures for light being directed to and/or received from the detection plane are the only members above the touch surface. For instance, a reflective or refractive member at the edge of the touch surface can direct light to detection optics and/or from illumination sources via a pinhole aperture, with the light moving between the detection optics and illumination sources in one or more detection planes above the touch surface. Consequently, the touch screen can have a thin cross section that is more suitable for devices such as mobile phones, PDAs, and other portable computing devices for which minimal device thickness is a priority.03-05-2009
20120169673SYSTEM FOR REDUCING EFFECTS OF UNDESIRED SIGNALS IN AN INFRARED IMAGING SYSTEM - Effects of undesired infrared light are reduced in an imaging system using an infrared light source. The desired infrared light source is activated and a first set of imaging data is captured during a first image capture interval. The desired infrared light source is then deactivated, and a second set of image data is captured during a second image capture interval. A composite set of image data is then generated by subtracting from first values in the first set of image data corresponding second values in the second set of image data. The composite set of image data thus includes a set of imaging where data all infrared signals are collected, including both signals resulting from the IR source and other IR signals, from which is subtracted imaging in which no signals result from the IR course, leaving image data including signals resulting only from the IR source.07-05-2012
20120169672TOUCH SURFACE WITH VARIABLE REFRACTIVE INDEX - An apparatus for determining a location of at least one object on a touch surface, comprising: a light transmissive panel defining the touch surface and including a controllable reflective boundary; an illumination arrangement configured to introduce light into the panel; a control device configured to selectively control the reflective boundary such that the light may pass between a first layer and a second layer via an opening in the reflective boundary; a light detection arrangement configured to measure the light passed via the opening and impinged on the touch surface; and a processor unit configured to determine the location as a function of the measured light passed via the opening and the selective control of the reflective boundary. A method and computer readable medium is also described.07-05-2012
20120169669PANEL CAMERA, AND OPTICAL TOUCH SCREEN AND DISPLAY APPARATUS EMPLOYING THE PANEL CAMERA - A panel camera, and an optical touch screen and a display apparatus employing the panel camera. The panel camera includes a lens panel comprising a plurality of narrow-angle lenses arranged in a two-dimensional (2D) array and a light-detection panel comprising a plurality of light detectors which are arranged in a 2D array to respectively correspond to the plurality of narrow-angle lenses to receive lights passing through the plurality of narrow-angle lenses from outside and obtain a remote image.07-05-2012
20120169666OPTICAL TOUCH-SENSING LIQUID CRYSTAL PANEL, OPTICAL TOUCH-SENSING PANEL AND METHOD OF DETERMINING TOUCH POSITION - An optical touch-sensing liquid crystal panel including a backlight, a liquid crystal display panel, a first reflector, a second reflector and a plurality of photo sensors is provided. The liquid crystal display panel includes a pixel array and a plurality of output light-valves, wherein the output light-valves are located outside the pixel array. The first reflector is disposed above the output light-valves. The photo sensors are disposed under the second reflector. The output light-valves and the photo sensors are respectively turned on by turns. When each of the output light-valves is turned on, the invisible light provided by the backlight passes through the output light-valves, the invisible light is then reflected by the first reflector as well as the second reflector in sequence and is captured by the corresponding photo sensor.07-05-2012
20120212458Detecting Multitouch Events in an Optical Touch-Sensitive Device by Combining Beam Information - An optical touch-sensitive device is able to determine the locations of multiple simultaneous touch events. The optical touch-sensitive device includes multiple emitters and detectors. Each emitter produces optical beams which are received by the detectors. The optical beams preferably are multiplexed in a manner so that many optical beams can be received by a detector simultaneously. Touch events disturb the optical beams. To determine whether a candidate touch point is an actual touch event, multiple beams that would be affected are considered together.08-23-2012
20120212457Detecting Multitouch Events in an Optical Touch-Sensitive Device Using Line Images - An optical touch-sensitive device is able to determine the locations of multiple simultaneous touch events. The optical touch-sensitive device includes multiple emitters and detectors. Each emitter produces optical beams which are received by the detectors. Touch events disturb the optical beams. Line images of the touch events are captured, which are then used to determine the touch events.08-23-2012
20120212455TECHNICAL MEDICAL DEVICE HAVING A MULTIFUNCTION DISPLAY - The invention relates to the field of technical medical devices, for example, dialysis machines. The object of the invention is to improve upon a technical medical device in such a way that the structural complexity of the technical medical device, the assembly, cleaning and maintenance expense for the technical medical device and the cost of the technical medical device are reduced, but at the same time the variety of functions increases. The technical medical device according to the invention therefore comprises a screen, which can be equipped to function as a sound converter or as an optical sensor or as a receiver and sender of electromagnetic waves. In addition, a method is disclosed whereby the control of the technical medical device is influenced on the basis of the input and output of information via the inventive display screen.08-23-2012
20120212454OPTICAL POSITION DETECTING DEVICE AND DISPLAY SYSTEM PROVIDED WITH INPUT FUNCTION - A detection target space of an optical position detecting device is divided into a detection target space configured by a first light receiving and emitting unit and a second light receiving and emitting unit and a detection target space configured by a third light receiving and emitting unit and a fourth light receiving and emitting unit. The first light receiving and emitting unit and the fourth light receiving and emitting unit are separated in the X axis direction, and the second light receiving and emitting unit and the third light receiving and emitting unit are arranged on one side in the Y axis direction. The first light receiving and emitting unit and the fourth light receiving and emitting unit are arranged on the outer side of the second light receiving and emitting unit and the third light receiving and emitting unit in the X axis direction.08-23-2012
20120212453SENSOR APPARATUS WITH DIFFERENT PROXIMITY SENSORS AND SENSING METHOD THEREOF - The present invention discloses a proximity sensing apparatus and a method thereof. A sensor apparatus comprises a panel, an emitting device, and a proximity sensor module. The panel includes a first transparent area and a second transparent area; an emitting device is located under the panel and the emitting device emitting a light passing through the first transparent area. The proximity sensor module is located under the panel and the proximity sensor module includes at least one proximity sensor with high sensitivity which is a second proximity sensor and at least one proximity sensor with low sensitivity which is a first proximity sensor, and the proximity sensor module receives the light passing through the second transparent area. The light passing through the first transparent area and then reflecting from an object to passing through the second transparent area, and the panel is able to provide a touch function.08-23-2012
20120212452METHOD FOR DETECTING OBJECT ON AN OPERATION INTERFACE OF A TOUCHABLE DEVICE AND TOUCHABLE DEVICE USING THE SAME - A method for detecting an object and a touchable device are presented, which is capable of detecting an object having a fingerprint feature on an operation interface of the touchable device. An image sensor is used for acquiring acquiring an image on the operation interface, and the acquired image is converted into a signal denoted in a frequency domain by using a frequency conversion function. Signals at a medium-high frequency (MHF) signal region among the signals of the frequency domain are analyzed, so as to generate a first signal and a second signal according to a distribution of the signals of the frequency domain. The first signal indicates existence of the object on the operation interface, and the second signal indicates inexistence of the object on the operation interface.08-23-2012
20120249483DISPLAY DEVICE - A display device with a touch pad function is provided which reduces the elements required to form a photo sensor while still accurately detecting input coordinate positions. The display device includes a display part on which a plurality of pixels are arranged in a matrix array, a plurality of photo detection circuits which are arranged in a matrix array in the inside of the display part, wherein each photo detection circuit of the plurality of photo detection circuits includes: a photo sensor which converts an incident light into a optical current corresponding to intensity of the incident light, an integral capacitance which integrates the optical current converted by the photo sensor, and a comparator to which a voltage of the integral capacitance is inputted, and the comparator includes a transistor of an open drain output type with a grounded source.10-04-2012
20120176345TOUCH SCREEN, TOUCH SYSTEM AND METHOD FOR POSITIONING A TOUCH OBJECT IN TOUCH SYSTEM - A touch screen, a touch system and a method for positioning a touch object in a touch system are disclosed. The touch screen comprises an infrared pair tube array, wherein said infrared pair tube array is disposed on an edge of said touch screen. By introducing the infrared pair tube array, the touch screen of the present invention eliminates invalid touch areas in the existing touch screen and avoids false touch points in multipoint positioning.07-12-2012
20120176344DETECTING AND TRACKING OBJECTS IN IMAGES - According to one disclosed method, coordinates in a multi-dimensional space are determined for an image point characterizing a particular object. An equation describing a model in the space is provided. The model is characteristic of a set of training images of one or more other objects. The coordinates are applied to the equation to determine a distance between the image point and the model. Based on the determined distance, a determination is made as to whether the particular object matches the one or more other objects. A set of training images may be received. A multi-dimensional space (e.g., eigenspace) may be determined based on the set of training images. A set of training points may be generated by projecting the set of training images into the multi-dimensional space. An equation describing a model in the multi-dimensional space that is characteristic of the set of training points may be determined.07-12-2012
20120176343OPTICAL ELEMENTS WITH ALTERNATING REFLECTIVE LENS FACETS - An optical element for a light based touch surface including a concatenated plurality of segments, wherein each segment is paired with a respective light emitter, each segment including an undulating series of pairs of reflective or refractive facets, wherein a first facet in each pair is oriented so as to collimate light emitted from a first light emitter associated with the segment and a second facet in each pair is oriented so as to collimate light emitted from a second light emitter associated with the segment, and wherein the first light emitter associated with the segment is the light emitter paired with the segment and the second light emitter associated with the segment is the light emitter paired with a neighboring segment.07-12-2012
20120176342POSITION DETECTION SYSTEM, DISPLAY PANEL, AND DISPLAY DEVICE - In an LED unit (07-12-2012
20120176341METHOD AND APPARATUS FOR CAMERA PROJECTOR SYSTEM FOR ENABLING AN INTERACTIVE SURFACE - A method and apparatus for enabling an interactive surface. The method includes determining pixels of a depth image relating to an object at least one of touching or in close proximity to a related surface, differentiating between a small and a larger cluster of pixels, determining smaller cluster of pixels to be a level1 blob and the larger cluster of pixels to be a level2 blob and declaring the level1 blob an object touching the surface, and computing the coordinates of the level1 blob and repeating the process to enable the interactive surface.07-12-2012
20120176340TOUCH MODULE AND TOUCH DETECTING METHOD - A touch module including an image sensing unit, a plurality of first reflecting elements, a plurality of second reflecting elements, and a processing unit is provided. The image sensing unit is positioned in correspondence with a first corner of a sensing area and capable of capturing a sensing image to output an image signal. The first reflecting elements and the second reflecting elements respectively have different first angles and different second angles, are disposed along a first and the second edges of the sensing area respectively, and are capable of reflecting a touch object to form a first and a second image in the sensing image. A second corner formed by the first the second edges is diagonal to the first corner. The processing unit is coupled the image sensing unit and receives the image signal to determine the position of the touch object relative to the sensing area.07-12-2012
20120313898TOUCH-SENSITIVE DEVICE - A touch-sensitive device including a display, a set of solar cells and a set of light sensors is provided. The display includes an external frame and a display panel. The external frame is located around the display panel. The set of solar cells is disposed within the external frame and applied to form a set of infrared light sources in the state of electro-luminescence. The set of light sensors is disposed within the external frame for receiving a corresponding light emitted by the set of infrared light sources.12-13-2012
20120313899FORCE-SENSING MODULES FOR LIGHT SENSITIVE SCREENS - A light sensitive screen includes at least one sensing element each being configured to detect a force applied to a position of the light sensitive screen and generate an electrical signal when a force is detected, and a sensor module configured to receive and process the electrical signal from the at least one sensing element. The sensor module may amplify the electrical signal from one of the at least one sensing element and generate an amplified signal, compare the amplified signal with a threshold and generate a comparing result, and generate a digital signal based on the comparing result, the digital signal including information as to whether the position of the light sensitive screen is touched.12-13-2012
20120075256Touch Sensing Using Shadow and Reflective Modes - A touch panel is described which uses at least one infrared source and an array of infrared sensors to detect objects which are in contact with, or close to, the touchable surface of the panel. The panel may be operated in both reflective and shadow modes, in arbitrary per-pixel combinations which change over time. For example, if the level of ambient infrared is detected and if that level exceeds a threshold, shadow mode is used for detection of touch events over some or all of the display. If the threshold is not exceeded, reflective mode is used to detect touch events. The touch panel includes an infrared source and an array of infrared sensors.03-29-2012
20120075255MOUSE WITH OPTICAL SENSING SURFACE - A touch-sensitive device is disclosed having a touch-sensitive surface that includes first and second touch-sensitive areas. A force feedback unit can be coupled to the second touch-sensitive area to provide force feedback at the second touch-sensitive area in response to a touch input detected at the second touch-sensitive area. In some embodiments, the first touch-sensitive area can be the surface of a mouse, and the second touch-sensitive area can be a member protruding from the surface of the mouse.03-29-2012
20120075254Touch System Having An Uninterrupted Light Source - According to the invention, an optical position sensing system is disclosed. The system may include a surface having a perimeter and a plurality of position sensing components. Each position sensing component may be located at a different point on the perimeter and include an optical sensor, a primary radiation source, and a supplemental radiation source. The supplemental radiation source may include retroreflective material or a discrete radiation source.03-29-2012
20120075253OPTICAL TOUCH SYSTEM AND OBJECT DETECTION METHOD THEREFOR - The present invention provides an optical touch system configured to determine an object region according to a brightness information acquired by a brightness sensing unit and to identify a block information of objects within the object region according to an image information acquired by an image sensing unit. The present invention further provides an objection detection method for an optical touch system.03-29-2012
20120075252RUGGEDIZED DISPLAY DEVICE - A ruggedized display device is disclosed. The ruggedized display device may include an optical stack configured to resist a load up to a load threshold. The optical stack may include an electronic display including a top surface and a bottom surface, and a top protective component coupled to the top surface of the electronic display via a bonding material layer, to shield the electronic display. The top protective component and the bonding material layer may collectively have a first thickness of less than 1.0 millimeters. The optical stack may further include a bottom protective component, coupled to the bottom surface via a resiliently deformable adhesive layer, to support the electronic display from below. The bottom protective component and the adhesive layer may collectively have a second thickness less than 10.0 millimeters.03-29-2012
20100271336IMAGE PICKUP DEVICE, DISPLAY-AND-IMAGE PICKUP DEVICE, AND ELECTRONIC DEVICE - Provided is an image pickup device with which object detection can be performed with a good stability no matter in what use conditions. A display area 10-28-2010
20100271335DISPLAY DEVICE HAVING OPTICAL SENSORS - A liquid crystal panel 10-28-2010
20100271332Optical input device, electronic device, and optical input system - An optical input device is applied in an electronic device. The optical input device includes a light source generator and a photosensitive plate. The light source generator has a body and a light source disposed within the body. The photosensitive plate is electrically connected to the electronic device, or is electrically disposed within the electronic device, and is electrically connected to a microprocessor. The light source of the light source generator emits a light ray through the body to form a light pattern image on the photosensitive plate. The photosensitive plate detects a deformation of the light pattern image, and outputs a control signal to the microprocessor correspondingly according to a shape of the light pattern image, enabling the electronic device to execute a corresponding preset function.10-28-2010
20100271331Touch-Screen and Method for an Electronic Device - A touch sensitive display for an electronic device includes a display (10-28-2010
20120313897DISPLAY CONTROL DEVICE, DISPLAY CONTROL METHOD, PROGRAM, AND RECORDING MEDIUM - A display control device according to an embodiment of the present technology obtains each image taken by several cameras, detects a particular object displayed in a certain image out of the obtained images, and performs control so as to set a mode to display an object in an image different from the certain image where the particular object is detected using the object in the certain image as a reference and to display the object in the different image on the same screen when the same object is detected in the different image in the obtained several images.12-13-2012
20100026666INFRARED TRANSMITTING OR RECEIVING CIRCUIT BOARD UNIT AND INFRARED TOUCH SCREEN USING THE SAME - An infrared transmitting or receiving circuit board which can be cut at the free location and be reconnected each other is disclosed. A power supply line, a grounding line, a clock signal line or a transfer protocol control line, an infrared pulse signal line and an infrared signal receiving line throughout the circuit board are set on the entire circuit board unit. A decoder with enabling a control input port, and a row driver and a column driver that are controlled and switched by the decoder are set on the one end of the circuit board unit. The circuit board unit can be reconnected and is able to make an infrared touch screen in any size. An infrared touch screen connects to the circuit board unit in parallel by the corresponding port of the controller unit respectively, therefore the synchronous, non-synchronous, and the segmental scanning can be realized.02-04-2010
20120249481OPTICAL COORDINATE INPUT DEVICE AND COORDINATE CALCULATION METHOD THEREOF - An optical coordinate input device and a coordinate calculation method thereof are disclosed. The optical coordinate input device includes a first capture module, a second capture module, and an identification unit. The first capture module and the second capture module are used for generating a first captured image and a second captured image respectively. The identification unit is used for executing a process to transform the first captured image and the second captured image into a first thresholding image and a second thresholding image based on a threshold and calculating a coordinate according to the first thresholding image and the second thresholding image.10-04-2012
20120249480INTERACTIVE INPUT SYSTEM INCORPORATING MULTI-ANGLE REFLECTING STRUCTURE - An interactive input system includes at least one image sensor capturing image frames of a region of interest; at least one light source emitting illumination into the region of interest; a bezel at least partially surrounding the region of interest, the bezel comprising at least one multi-angle reflector reflecting the illumination emitted from the light source towards the at least one image sensor; and processing structure in communication with the at least one image sensor processing captured image frames for locating a pointer positioned in proximity with the regin of interest. A method of generating image frames is also provided.10-04-2012
20120249479INTERACTIVE INPUT SYSTEM AND IMAGING ASSEMBLY THEREFOR - An interactive input system and imaging assembly therefor are disclosed. The imaging assembly includes an image sensor for capturing images of a region of interest; a light source; and a beam splitter. The beam splitter is configured such that optical axes of the image sensor and the light source are generally aligned.10-04-2012
20120249486Optical Control System with Modulated Emitters - An optical control system is described, which employs a series of optical emitters and detectors arranged about a touch area. The emitters are driven by a series of orthogonal functions, and the system is operable to correlate the signals received at the detectors with the modulation functions to determine the amount of energy received by the detectors from each of the emitters. This system means that all or many emitters can be modulated simultaneously, so the scanning process is accelerated. Also, the energy estimates arrived at by correlation with the modulating functions are largely unaffected by external interference signals as well by each other. An additional benefit of the present invention is that the correlation processing makes use of many detector samples and tends to yield results which have higher resolution than the sample values themselves, due to the averaging of noise over the sample set.10-04-2012
20100007632SEMICONDUCTOR DEVICE - A semiconductor device is provided, which includes a display portion and a driver circuit portion configured to drive the display portion. The display portion includes a first pixel electrode, a second pixel electrode, a plurality of photo sensors between the first pixel electrode and the second pixel electrode, and a plurality of color filters. The driver circuit portion includes a transistor including a single crystal semiconductor layer.01-14-2010
20100001979OPTICAL WAVEGUIDE FOR TOUCH PANEL AND TOUCH PANEL USING THE SAME - An optical waveguide for a touch panel which eliminates the need for alignment between the optical waveguide and a lens device, and to provide a touch panel using the same. An optical waveguide for a touch panel is provided in which end surfaces of cores 01-07-2010
20120256879MUTIPLE IMAGE PROJECTION APPARATUS - Multiple image projection apparatus are described. A cubic multi-prism beam splitter is provided having diagonal interfaces with one or more PBS elements and/or reflective elements positioned thereon. At least first and second spatial light modulators, such as LCoS SLMs, are positioned adjacent the beam splitter cube. The first and second LCoS spatial light modulators and first and second projection optics systems are configured to output a first modulated image from the first LCoS SLM to the first projection optics system and a second modulated image from the second LCoS spatial light modulator to the second projection optics system. In other embodiments, additional LCoS spatial light modulators and light sources produce 3-D images. Addition of sensors permits user interaction with a projected image which is fed back to a controller to optionally change current or future images displayed by the system.10-11-2012
20120256880METHOD AND APPARATUS FOR DISPLAYING AN OBJECT - A method and apparatus for displaying an object are provided. The display apparatus includes a display unit which displays an object, a first touch sensing unit which senses a user input by a first input method, a second touch sensing unit which senses a user input by a second input method, a coordinate calculation unit which calculates coordinate values sensed by the first and the second touch sensing units, and a controller which, in response to a user input being simultaneously sensed by the first and the second touch sensing units, compares the coordinate values sensed by the first and the second touch sensing units and determines whether the user input is a single touch input or a multi-touch input, and, according to a result of the determination, controls to display the object on the display unit.10-11-2012
20120188203IMAGE SENSING MODULE AND OPTICAL SENSING SYSTEM - An image sensing module utilizes an image sensor to sense objects and a mirror image of the objects in a mirror through a plurality of first light filtering components with a first transmission spectrum and a plurality of second light filtering components with a second transmission spectrum for generating an image. A light filtering module substantially having the first transmission spectrum is disposed in front of the mirror. The image includes a plurality of pixels. Each pixel includes a first sub data and a second sub data. The image sensing module utilizes an image sensing controller to detect real images corresponding to the objects and virtual images correspond to the mirror image of the objects from the image according to the first sub data and the second sub data of the plurality of pixels.07-26-2012
20120188207DISPLAY DEVICE - To provide a display device having an input function that is not dependent on the light environment, multiple sensor pixel circuits that detect light in a specified detection period and hold the light amount when not in the specified detection period are disposed in a pixel region. In a frame in which input is performed using the sensor pixel circuits, a backlight is lit one time for a time in a frame period, and a first detection period and a second detection period are set one time each in the frame period. The difference between the light amount in the first detection period and the light amount in the second detection period is obtained using a difference circuit. The backlight is in an extinguished state at the beginning of the first detection period, and lighting of the backlight is started at a time during the first detection period.07-26-2012
20120188206OPTICAL TOUCH SCREEN WITH TRI-DIRECTIONAL MICRO-LENSES - A lens for refracting light in three directions, including a lens surface having a repetitive pattern of recessed cavities formed by a repetitive pattern of three substantially planar facets.07-26-2012
20110115748Infrared Touch Screen - A touch screen system comprises the following: a detection area having at least two sides; light transmitters (“LTs”) disposed on the sides; and light receivers (“LRs”) disposed on the sides, wherein the LTs and the LRs are paired where one of the LTs is paired with one of the LRs, forming transmitter-receiver pairs, wherein the transmitter-receiver pairs are positioned on the sides, where the light transmitter and the light receiver of anyone of the transmitter-receiver pairs are disposed on different ones of the sides, wherein selected ones of the transmitter-receiver pairs are partitioned into two or more groups as a function of the respective positions of the transmitter-receiver pairs along the sides, and wherein one of the groups is activated at a given time.05-19-2011
20120262420FOCUS-BASED TOUCH AND HOVER DETECTION - Embodiments of the present invention disclose a system and method for focus-based touch detection. According to one embodiment, a reference pattern is formed on a surface and an imaging device is configured to detect the reference pattern and the presence of an object within proximity of a contact area of the surface. Furthermore, focus information associated with the reference pattern and/or object is used to determine if the detected object is touching or hovering said contact area.10-18-2012
20120262421Optical Touchpad, Portable Electronic Device and Method thereof - Optical touchpad includes a light source for emitting light of a specific wavelength, a specific-light sensing array for sensing the specific light after being reflected by an instruction object for accordingly generating a specific-light sensing image, a proximity detector for determining an instruction distance between the instruction object and the optical touchpad according to the specific-light sensing image, and a motion detector for determining path of the instruction object and then outputting a motion signal according to the specific-light sensing image. When the instruction distance is greater than a predetermined value, the motion detector is turned off.10-18-2012
20120262423IMAGE PROCESSING METHOD FOR OPTICAL TOUCH SYSTEM - An image processing method for an optical touch system includes the steps of obtaining an image and generating a light distribution curve pattern from the image, selecting a target signal of the light distribution curve pattern in accordance with light intensity information of the light distribution curve pattern, determining at least one rising slope and at least one falling slope of the target signal, and selecting the target signal as an object signal when the absolute values of the at least one rising slope and at least one falling slope are greater than a threshold.10-18-2012
20100295823APPARATUS FOR TOUCHING REFLECTION IMAGE USING AN INFRARED SCREEN - An apparatus for touching a reflection image using an infrared screen, more particularly to an apparatus for touching a reflection image using an infrared screen comprising infrared LEDs, an infrared camera, and a projector for projecting an image in free space so as to implement a virtual touch screen in free space.11-25-2010
20120229423OPTICAL FILM AND TOUCH PANEL - A touch panel which prevents Newton ring formation and glare, shows high transmission image clarity, prevents haze and has high visibility, and an optical film which is applicable to such a touch panel. An optical film comprising an optically-transparent substrate and at least one hard coat layer (A) disposed on a surface of the optically-transparent substrate, wherein a surface of the hard coat layer (A), which is opposite to a surface where the optically-transparent substrate is present, has an arithmetic mean roughness (Ra) defined in JIS B0601 (1994) of 0.025 to 0.05 μm, and has 10 to 250 convex portions each having a height of 0.3 to 3 μm in a 1.08 mm square area.09-13-2012
20120229422LIGHT SENSING ASSEMBLY AND INTERACTIVE DISPLAY DEVICE HAVING THE SAME - A light sensing assembly includes a first light guide plate (“LGP”), a light-emitting diode (“LED”) part, an infrared LED part, a second LGP and a first sensor array. The LED part is at a side portion of the first LGP and emits white lights of a displayed image. The infrared LED part emits infrared lights of a detected touch. The second LGP is below the first LGP. The second LGP guides a path of the infrared lights of the detected touch inputted in accordance with a touch operation. The first sensor array is at a side portion of the second LGP and senses the reflected infrared lights which are guided by the second LGP.09-13-2012
20100302209OPTIC HAVING A CLADDING - Various embodiments of wedge-shaped light guide optics are disclosed. One embodiment comprises a wedge-shaped light guide having opposing first and second faces and includes a material having a first refractive index. The first face of the wedge-shaped light guide supports a cladding layer having a second refractive index less than the first refractive index. The optic further comprises a turning film bonded to the cladding layer via an interface layer. The interface layer has a third refractive index matched to the first refractive index.12-02-2010
20130181947TOUCH SCREEN PANEL - Disclosed herein is a touch screen panel. The touch screen panel includes: a driving unit generating a driving signal; a signal sensing unit that is activated by the driving signal input from the driving unit; and a signal detection unit that generates a combination signal by using a sensing signal generated by capacitance sensed by the signal sensing unit, and counts a period of the sensing signal by using the combination signal to calculate a counting value and calculates a delay time of a remaining period after the counting, and combines the calculated values to determine a cell in which the capacitance is generated.07-18-2013
20130181948INFORMATION PROCESSING APPARATUS AND INFORMATION PROCESSING METHOD AND COMPUTER PROGRAM - Disclosed herein is intended to simultaneously display video content obtained from two or more sources. In displaying video content obtained from two or more sources in parallel to each other or as superimposed on each other, an information processing apparatus normalizes each image by use of the information such as the scale of each image and the corresponding area thereof. In the normalization, image manipulation such as digital zooming for example is executed on digital images such as a still image and a moving image. If one of the images to be displayed in parallel to each other or as superimposed on each other is an image taken with a camera block, optical control such as panning, tilting, or zooming is executed on an actual camera.07-18-2013
20090002341Display device - It is an object of the present invention to allow a specified function to be readily selected in a mobile telephone or the like without performing a complicated operation. A liquid crystal (01-01-2009
20100321339Diffractive optical touch input - A display apparatus includes a display having a pixelated display surface and an opposed surface, and a substantially planar light guide structure having a light emitting surface that is optically coupled to the opposed surface of the display. The light emitting surface of the light guide structure has an array of gratings arranged as a plurality of sub-arrays of gratings. At least some of the gratings of a given sub-array are configured to emit display light towards the opposed surface of said display, and at least one of the gratings of the given sub-array is configured to emit non-display light (e.g., IR light) towards the opposed surface of the display and to receive non-display light that is at least one of reflected from and scattered by an object that is proximate to the pixelated display surface. The display apparatus also comprises a plurality of light sensors that are disposed along at least two edges of the light guide structure and that are configured to detect the received non-display light. The plurality of light sensors have outputs configured to be connected to a data processor that operates in accordance with a stored program to determine a location of the object on the pixelated display surface.12-23-2010
20110122096METHOD OF DRIVING TOUCH SCREEN DISPLAY APPARATUS, MEDIUM FOR RECORDING METHOD, AND TOUCH SCREEN DISPLAY APPARATUS - A touch screen display apparatus includes a touch detector for detecting a touch by an object and for generating an input signal, a panel including photo sensor units for capturing an image of the object, and a plurality of light emitting units for realizing an image to be displayed, a signal converter for converting the input signal into an output signal having a plurality of enable periods and at least one disable period, an updating unit for updating a noise determination reference of a sensing signal provided from the photo sensor unit during the at least one disable period, and a noise remove for removing noise from the sensing signal is according to the updated noise determination reference during an enable period of the enable periods.05-26-2011
20100328269TOUCH PANEL AND DRIVING METHOD OF THE SAME - It is an object to provide a touch panel which includes an A/D converter circuit and has a function of image shooting with high resolution and high-level gray scale and at high operation speed. A touch panel includes a plurality of pixels each provided with a display element and a photo sensor, an A/D converter to which a first potential is applied from a photo sensor, and a reading circuit. The A/D converter includes an oscillation circuit which changes the oscillating frequency of a first signal to be generated in accordance with the first potential and stops oscillating when a second potential is applied thereto from the reading circuit, and a counter circuit which generates a second signal having a discrete value determined in accordance with the oscillating frequency.12-30-2010
20080297489DATA INPUT SYSTEM - A data input system including electronic paper and a stylus writing device is disclosed. The electronic paper includes a transparent display substrate on which a number of optically readable code patterns have been formed, the optically readable code patterns representing positional information on a display surface, a rear surface substrate opposing the display substrate, and coloring particles that are enclosed between the display substrate and the rear surface substrate and that are movable by applying an electric or a magnetic field. The electronic paper displays an image due to motion of the particle. The stylus writing device includes a writing head provided at the end of the stylus for writing the image by applying an electric or a magnetic field to the electronic paper by contact and includes an optical reading device for optically reading the code patterns formed on the display surface where the end of the stylus contacts.12-04-2008
20120262424Display Device - A plurality of sensor pixel circuits each including two photodiodes, one accumulation node accumulating charge corresponding to an amount of light, and a read transistor having a control terminal connected to the accumulation node are arranged in a pixel region. In accordance with a clock signal, when a backlight is turned on, a transistor turns on, a current flows through the photodiode, and a potential at the accumulation node drops. When the backlight is turned off, a transistor turns on, a current flows through the photodiode, and the potential at the accumulation node rises. Sensitivity characteristics of the two photodiodes may be changed using the clock signal. The sensor pixel circuit described above is used for detecting a difference between an amount of light to be incident when the backlight is turned on and an amount of light to be incident when the backlight is turned off.10-18-2012
20120262425DISPLAY DEVICE AND DISPLAY METHOD THEREFOR - In various embodiments, a device for displaying a signal, including an optical guide defining at least one propagation path for an optical radiation from an injection point of the radiation, in which the optical radiation propagating along this path is subject to attenuation due to being diffused and made visible outside said guide, and at least one source of optical radiation for receiving said signal and generating an optical radiation whose intensity is a function of said signal; said at least one optical radiation source being coupled to said at least one injection point to inject into said guide the optical radiation generated by said radiation source.10-18-2012
20110032212INPUT APPARATUS AND OPERATION METHOD THEREOF - An input apparatus including an optical mouse module and a mouse pad module is provided. The optical mouse module includes a light source and an optical sensor. The light source is adapted to emit a light beam. The optical sensor has a sensible distance. The mouse pad module is disposed on the optical mouse module. The mouse pad module includes a sliding sheet elastically coupled to the optical mouse module. The sliding sheet is adapted to move in a three-dimensional space. The optical sensor and the sliding sheet are arranged in an arrangement direction. An operation method of the input apparatus is also provided.02-10-2011
20120327036LIGHT GUIDE ASSEMBLY AND OPTICAL TOUCH MODULE USING THE SAME - A light guide assembly includes a hollow mounting pillar and a light guide member. The hollow mounting pillar includes a plurality of sidewalls; a receiving groove is defined by the sidewalls and has an inlet. One of the sidewalls serves as a transparent portion and the rest of the sidewalls each serve as a reflection portion. The light guide member is disposed in the receiving groove, and a light incident surface of the light guide member is exposed from the inlet. The light guide assembly has advantages such as having a simpler production process and higher production efficiency. An optical touch module adopting the light guide assembly is also disclosed.12-27-2012
20120327034Touch-sensitive system with optical transmitters and receivers - The general field of the invention is that of optical touch-sensitive systems mounted above areas of display surfaces. The system comprises at least two light sources arranged to produce above a display surface a “luminous layer” covering said surface, a first imager and a second imager the optical fields of which cover the surface. The sources are separate from the imagers. When a first object is situated above the surface, first and second luminous images of said object are captured by the first imager and the second imager, the system including analysis means enabling by triangulation of the known positions of the first and second luminous images, determination of the position of this first object above the display surface. In more elaborate configurations, the system comprises a plurality of sources of illumination and imagers enabling coverage of complex surfaces, enabling “multi-touch” detection or securing the detection functions.12-27-2012
20120327037OPTICAL TOUCH SYSTEM AND CALCULATION METHOD THEREOF - A method of calculating the coordinate data of an object includes the steps of: providing a mirror surface for generating a reflection of an object; providing an image sensor for capturing an image of the object and an image of the reflection; obtaining an individual image of the object when the image of the object and the image of the reflection overlap to form an overlapped image; and calculating the coordinate data of the object based on the overlapped image and the individual image.12-27-2012
20120327038METHOD AND APPARATUS FOR SENSING TOUCH INPUT USING ILLUMINATION SENSORS - Disclosed are a method and an apparatus for sensing touch input using illumination sensors. The apparatus includes: a touch pad on which at least one illumination sensor is arranged; and a controller collecting sensor values of the at least one illumination sensor to perform touch recognition suitable for a present illumination environment.12-27-2012
20120327029TOUCH INPUT SENSING USING OPTICAL RANGING - This disclosure provides systems, methods and apparatus for touch systems. In one aspect, the touch system can include at least one light guide optically coupled to at least one light source and at least one optical detector. The light guide can be configured to transmit light from at least one light source across the surface in at least one direction and to receive at least a portion of the transmitted light reflected in an opposite direction in response to at least one reflecting object on the surface. The touch system also can include a touchscreen transceiver. The touch system can be configured to determine a location of at least one reflecting object on the surface by identifying a position of where the light guide or the touchscreen transceiver receives the reflected light and by determining time-of-flight of the transmitted light and the reflected light.12-27-2012
20120327032LIGHT-SENSING APPARATUSES, METHODS OF DRIVING THE LIGHT-SENSING APPARATUSES, AND OPTICAL TOUCH SCREEN APPARATUSES INCLUDING THE LIGHT-SENSING APPARATUSES - Light-sensing apparatuses may include a light sensor transistor and a switching transistor in a light-sensing pixel, the transistors being oxide semiconductor transistors. In the light-sensing apparatus, the light sensor transistor and the switching transistor in the light-sensing pixel may be adjacently formed on one substrate, the switching transistor including a channel material that is relatively less light-sensitive than the light sensor transistor and is stable, and the light sensor transistor includes a channel material that is relatively light-sensitive. The light sensor transistor may include a transparent upper electrode on a surface of a channel, and a negative voltage may be applied to the transparent upper electrode, whereby a threshold voltage shift in a negative voltage direction may be prevented or reduced.12-27-2012
20120327031METHOD AND APPARATUS FOR INPUTTING INFORMATION INCLUDING COORDINATE DATA - A method, computer readable medium, and apparatus for inputting information, including coordinate data, includes: extracting a predetermined object from an image, including a predetermined object above a plane; detecting motion of the predetermined object while the predetermined object is within a predetermined distance from the plane; and then determining if to input predetermined information.12-27-2012
20110037733IMAGE DISPLAY APPARATUS FOR DETECTING POSITION - Provided is an image display apparatus capable of detecting a position. The image display apparatus includes an indicator detector disposed in the vicinity of a detection surface displaying an image and sensing an operation of an indicator on the detection surface and including an image sensor capable of controlling an angle between the detection surface and a main sensing direction. A reflection frame is disposed in the vicinity of the detection surface.02-17-2011
20110037731ELECTRONIC DEVICE AND OPERATING METHOD THEREOF - An electronic device and an operating method thereof are provided. The method firstly establishes a database recording at least one predefined operating gesture, a predefined function corresponding to the predefined operating gesture, and a specific color. An image captured by an image capturing unit of the electronic device is then obtained. When the specific color is found in the image, a position of the specific color is obtained and a gesture trajectory is displayed on a screen of the electronic device according to the position. The method repeats the steps of obtaining the image and displaying the gesture trajectory till it is unable to find the specific color in the currently obtained image. By referring to the database, the predefined function is then executed according to the predefined operating gesture which is determined by connecting the positions of the specific color in the obtained images.02-17-2011
20110037730TOUCH PANEL AND TOUCH DISPLAY DEVICE HAVING THE SAME - A touch panel including a light guide plate, a plurality of light sources and a plurality of detectors is provided. The light guide plate has a top surface, a bottom surface, a plurality of side surfaces and a plurality of light incident surfaces. The light sources are disposed at the light incident surfaces of the light guide plate, and the light sources have a photocell total reflection angle (α) and a photocell vertical divergence angle (β) corresponding to the light incident surfaces of the light guide plate, wherein θ<α<60°, θ is a critical angle of the total reflection angle of the light guide plate, and β<50°. The detectors are disposed corresponding to the light sources so as to receive photocell signals from the light sources.02-17-2011
20110037729OLED TOUCH PANEL AND METHOD OF FORMING THE SAME - A displaying region and a sensing region are defined in each pixel region of the OLED touch panel of the present invention. The readout thin film transistor of the sensing region is formed by the same processes with the drive thin film transistor of the displaying region. The top and bottom electrodes of the optical sensor are formed by the same processes with the top and bottom electrodes of the OLED. Accordingly, the present invention can just add a step of forming the patterned sensing dielectric layer to the processes of forming an OLED panel to integrate the optical sensor into the pixel region of the OLED panel. Thus, an OLED touch panel is formed.02-17-2011
20120327033INPUT DEVICE - An input device which allows a user to erase display information such as a character inputted thereto is provided. The input device includes a rectangular frame-shaped optical waveguide having a rectangular hollow input-use interior, and a control means provided on the outside of one of the sides of the optical waveguide. The optical waveguide and the control means are provided on a surface of a rectangular frame-shaped retainer plate having the hollow input-use interior, and are covered with a rectangular frame-shaped protective plate. The control means includes: a light-emitting element connected to ends of light-emitting cores of the optical waveguide; a light-receiving element connected to ends of light-receiving cores of the optical waveguide; and a CPU incorporating a program for recognizing the size of the tip of a pen and the size of the tip of an eraser in a region within the hollow input-use interior.12-27-2012
20120319998REFLECTING SHEET AND OPTICAL TOUCH DEVICE USING THE SAME - A reflecting sheet includes a base, a plurality of protruding structure and a plurality of reflecting micro structures. The base has a first surface. The protruding structures are disposed on the first surface of the base. The reflecting micro structures are disposed on the protruding structures. An optical touch device using the reflecting sheet is also provided. The reflecting sheet can effectively reflect incident light rays with different incident angles. The optical touch device has simple structure and is easily assembled.12-20-2012
20120319999SCREENS FOR USE AS DISPLAYS OF SMALL-SIZED DISPLAY DEVICES WITH TOUCH PANEL FUNCTIONS, AND SMALL-SIZED DISPLAY DEVICES WITH TOUCH PANEL FUNCTIONS COMPRISING SAID SCREENS - A display screen for a small-sized display device with a touch panel function includes: a Fresnel lens sheet including a Fresnel lens portion and configured to convert image light projected from an image light source into light substantially parallel to the substantial normal direction of a screen surface and emit the converted light; and a light control sheet located on the image light exiting side of the Fresnel lens sheet. The light control sheet includes: unit light transmissive portions constituting part of the image light exiting surface of the light control sheet, the unit light transmissive portions extending in the transverse direction of the screen; and unit light absorbing portions constituting part of the image light exiting surface of the light control sheet, the unit light absorbing portions extending in the transverse direction of the screen, the unit light transmissive portions and the unit light absorbing portions being alternately arranged.12-20-2012
20120319997SCALABLE DISTRIBUTED/COOPERATIVE/COLLABORATIVE PARADIGM FOR MULTI-USER INTERACTION WITH PROJECTION-BASED DISPLAY WALLS - A method of distributed/cooperative/collaborative gesture management may comprise queuing actions of gestures as the gestures move across a display, processing the actions of each of the gestures by a projector in which the projector's display is close to a gesture, sending an anticipatory action message that one of the gestures is predicted to enter a display region of a projector, processing the actions of one of the gestures by a projector in which the projector's display is close to the one of the gestures, and in response to the one of the gestures being in an overlapping display projected by overlapping projectors, the actions of the one of the gestures are processed by the overlapping projector with the smallest identifier.12-20-2012
20120086672METHOD OF LOCATING TOUCH POSITION - A method for locating a touch position is provided. The method is adaptable to an optical touch panel, wherein the optical touch panel has a plurality of visible light sensors and a plurality of corresponding invisible light sensors that are arranged as an array. In the present method, sensing signals of the visible light sensors and the invisible light sensors are read. The sensing signal of each visible light sensor is converted into a first binary code according to a first setting parameter, and the sensing signal of each invisible light sensor is converted into a second binary code according to a second setting parameter and a third setting parameter. An AND operation is performed on all the first binary codes and all the second binary codes to obtain a plurality of logic operation values, so as to locate a position touched by a user on the optical touch panel.04-12-2012
20120327030ELECTRONIC DEVICE WITH INFRARED TOUCH SENSING AND INFRARED REMOTE CONTROL FUNCTION - An electronic device paired with an infrared remote control, includes a display screen having a display area, at least one infrared emitter, at least one infrared receiver, a prism and a processing unit. A prism is adjacent to the at least one infrared receiver for converging the infrared rays from the at least one infrared emitter and the infrared remote control to the at least one IR receiver. A processing unit is for activating and then deactivating the infrared emitters one after another, identifying operations of a user on the display area by analyzing the interception of the infrared rays emitted from each of the infrared emitters, identifying operations of a user according to the infrared signals from the infrared remote control and executing corresponding functions associated with the operations of the user.12-27-2012
20120327035OPTICAL TOUCH SYSTEM AND IMAGE PROCESSING METHOD THEREOF - An optical touch system includes an image sensor module and a processor. The image sensor module includes a plurality of image sensing elements that can be independently controlled to achieve different exposure times. The plurality of image sensor elements can produce a picture including a plurality of pixel groups. The processor is configured to extract an intensity value of each pixel group and to select a set of successive pixel groups as an object image according to the intensity values of the pixel groups.12-27-2012
20120327039INFRARED TOUCH SCREEN WITH SIMPLIFIED COMPONENTS - We present signal production devices and infrared-style touch screens incorporating them. Compared to prior art devices, the signal production devices of the present invention have simpler, more easily manufactured components. Touch screens incorporating these devices can have reduced bezel width, and are particularly well-suited to finger-only touch on small area screens.12-27-2012
20120092302DISPLAY DEVICE - It is an object of the present invention to provide a display device equipped with a display panel that is provided with a photo-detection section with improved accuracy of detecting a touch position. A display panel (04-19-2012
20120092300VIRTUAL TOUCH SYSTEM - A virtual touch system including a head-mounted see-through display device, a micro-image display, at least two micro image-capturing devices, and an image processing unit is provided. The head-mounted see-through display device has a holder and an optical lens group that allows an image light of a real scene to directly pass through and reach an observing location. The micro-image display disposed on the holder of the head-mounted see-through display device casts a display image to the observing location through the optical lens group to generate a virtual image plane, wherein the virtual image plane contains a digital information. The micro image-capturing devices disposed at the holder capture images of the real scene and a touch indicator. The image processing unit coupled to the head-mounted see-through display device recognizes the touch indicator and calculates a relative location of the touch indicator on the virtual image plane for the micro-image display.04-19-2012
20120287086TRACKING APPROACHING OR HOVERING OBJECTS FOR USER INTERFACES - The claimed subject matter relates to an architecture that can utilize photo-sensors embedded in a substantially transparent layer of a UI display for tracking objects that approach or hover over the UI display. The photo-sensors can be configured to detect light of certain wavelengths (e.g., visible light, infrared light) that are propagated toward the UI display, while ignoring light emanating from the UI display when displaying content. Accordingly, by examining various characteristics of the incoming light such as intensity, the architecture can identify a location of a shadow incident upon the display caused by an approaching or hovering selector object blocking portions of incoming light. Additionally or alternatively, the architecture can identify a location of higher intensity for light emanating from the selector object.11-15-2012
20120287085DISPLAY DEVICE HAVING OPTICAL SENSORS - A liquid crystal display device is provided with a liquid crystal panel 11-15-2012
20120287084Wireless Communicational Optical Positioning Determining Device - A position determination device and process which makes use of wireless communication and optics media for touch control and employs a sensor unit for receiving signal provided at a bottom end of a touch pad. The particular identifiable signal source (modulated light) which is encoded and decoded based on optics transmission is detected, analyzed and identified, and is capable of using position calculating unit with relatively simple and easy calculation process to achieve a particular objective, and calculating and obtaining a particular position of the signal source, thereby complicated and costly processing unit for processing image in the prior arts can be avoided.11-15-2012
20120287083OPTICAL TOUCH CONTROL DEVICE AND OPTICAL TOUCH CONTROL SYSTEM - An optical touch control device includes a detection area, a plurality of image capturing modules, for capturing a plurality of images on the detecting area, and a processing module, coupled to the plurality of image capturing modules, for determining a touch status of the detection area according to variations of the plurality of images, wherein a plurality of capture angles of the plurality of image capturing modules relative to the detection are greater than 90°.11-15-2012
20120139877PROXIMITY SENSOR AND ELECTRONIC DEVICE - A proximity sensor (06-07-2012
20130009913HYRBID HUMAN-INTERFACE DEVICE - The present invention discloses a hybrid human-interface device including an optical navigation module and a pointing module. The optical navigation module is configured to replace the conventional buttons of a convention pointing device, such as an optical mouse or a trackball mouse or TV controller. The optical navigation module is configured to sense gestures of at least one object operated by a user to activate commands associated with particular programs running on the host. Since the optical navigation module is only configured to sense gestures of the object but not the movement of the hybrid human-interface device relative to a surface, the resolution thereof is aimed to be sufficiently high enough for sensing gestures and no need to be relatively high.01-10-2013
20130009911UNDERLAY-BOARD-EQUIPPED INPUT DEVICE - An underlay-board-equipped input device is provided which is capable of preventing positional displacement of a writing paper sheet when a user is writing on the set writing paper sheet and when the writing paper sheet is set again. An underlay board is mounted to the back surface of a rectangular frame-shaped input device having a rectangular hollow input-use interior pivotably about one end edge of the input device. The input device includes a rectangular frame-shaped optical waveguide having the hollow input-use interior. A means for positioning a writing paper sheet (such as protrusions) is provided on the front surface of the underlay board. The front surface of the underlay board and the back surface of the input device are configured to form a holding part for holding the writing paper sheet therebetween.01-10-2013
20130009914COORDINATE INPUT DEVICE, AND PROGRAM - With respect to a coordinate input device comprising an operation detection plane at a position in front of a display surface or projection surface, contact with the display surface or projection surface, or the absence thereof, by an input object having a round tip is accurately determined. The coordinate input device provided comprises: processing means that detects a size of the input object blocking detection light that travels along the operation detection plane; processing means that generates a down event of the input object when, after blockage of the detection light is initially detected, it is detected that the size has become greater than a first threshold; and processing means that generates an up event of the input object when, following detection of a maximum value of the size, it is detected that the size has become smaller than a second threshold.01-10-2013
20130016070Methods and Systems for a Virtual Input Device - The present application discloses systems and methods for a virtual input device. In one example, the virtual input device includes a projector and a camera. The projector projects a pattern onto a surface. The camera captures images that can be interpreted by a processor to determine actions. The projector may be mounted on an arm of a pair of eyeglasses and the camera may be mounted on an opposite arm of the eyeglasses. A pattern for a virtual input device can be projected onto a “display hand” of a user, and the camera may be able to detect when the user uses an opposite hand to select items of the virtual input device. In another example, the camera may detect when the display hand is moving and interpret display hand movements as inputs to the virtual input device, and/or realign the projection onto the moving display hand.01-17-2013
20130016071DIGITIZER USING POSITION-UNIQUE OPTICAL SIGNALS - The present invention provides systems and methods of using a stylus that houses optics and a detector capable of receiving optical signals that are combined with a displayed image. Stylus position determination is made by analyzing received optical signals.01-17-2013
20130016067POSITION DETECTION SYSTEM AND DISPLAY SYSTEM WITH INPUT FUNCTIONAANM YOSHIDA; KazukiAACI SuwaAACO JPAAGP YOSHIDA; Kazuki Suwa JPAANM ONISHI; YasunoriAACI ShiojiriAACO JPAAGP ONISHI; Yasunori Shiojiri JPAANM KIYOSE; KanechikaAACI MatsumotoAACO JPAAGP KIYOSE; Kanechika Matsumoto JP - In a position detection system, a retroreflection portion is provided on an outer peripheral surface of a designating member. Alight source unit emits detection light along an imaginary plane parallel to a reference surface. A light receiving element is arranged on one side in a Z-axis direction from the imaginary surface in such a way that a direction of a normal light to a light receiving surface intersects with the reference surface. When a distance between the designating member and the light source unit is long, light reflected by the retroreflection portion becomes incident more efficiently on the light receiving surface of the light receiving element than when the distance is short.01-17-2013
20130016069OPTICAL IMAGING DEVICE AND IMAGING PROCESSING METHOD FOR OPTICAL IMAGING DEVICEAANM Chen; Yu-YenAACI New Taipei CityAACO TWAAGP Chen; Yu-Yen New Taipei City TWAANM Huang; Po-LiangAACI New Taipei CityAACO TWAAGP Huang; Po-Liang New Taipei City TW - An optical imaging device includes a display panel whereon a coordinate detecting area is formed, at least one light source disposed on a corner of the display panel for emitting light to illuminate an object, a first image capturing module disposed on a corner of the display panel for capturing image information of the object, a second image capturing module disposed on another corner of the display panel for capturing image information of the object, and a control module coupled to the first image capturing module and the second image capturing module for determining whether to calculate a coordinate value of the object according to whether the first image capturing module and the second image capturing module capture the image information of the object simultaneously.01-17-2013
20130016068OPTICAL POSITION DETECTION DEVICE AND DISPLAY SYSTEM WITH INPUT FUNCTIONAANM YOSHIDA; KazukiAACI SuwaAACO JPAAGP YOSHIDA; Kazuki Suwa JPAANM KIYOSE; KanechikaAACI MatsumotoAACO JPAAGP KIYOSE; Kanechika Matsumoto JP - A detection target space of an optical position detection device is divided into a detection target space due to a light emitting/receiving unit and a light emitting/receiving unit and a detection target space due to a light emitting/receiving unit and a light emitting/receiving unit. The light emitting/receiving units overlap each other in a Z-axis direction, and a light receiving element of the light emitting/receiving unit and a light receiving element of the light emitting/receiving unit are disposed so as to overlap each other in the Z-axis direction with light receiving surfaces facing to respective directions different from each other.01-17-2013
20130016066ELECTRONIC DEVICE AND TOUCH MODULE THEREOFAANM Chen; Chien-WeiAACI New Taipei CityAACO TWAAGP Chen; Chien-Wei New Taipei City TWAANM Hsu; Ching-FuAACI New Taipei CityAACO TWAAGP Hsu; Ching-Fu New Taipei City TWAANM Wen; Jun-HongAACI New Taipei CityAACO TWAAGP Wen; Jun-Hong New Taipei City TWAANM Liu; Yen-ChiAACI New Taipei CityAACO TWAAGP Liu; Yen-Chi New Taipei City TW - An electronic device and its touch module are provided. The touch module includes a touch area, a detecting device, and a touch position determining device. The touch area is formed on a case of the electronic device, wherein the touch area includes a plurality of holes; each of the holes can allow light to pass through it when it is not covered by an external object, but cannot allow light to pass through it when it is covered by an external object. The detecting device is positioned under the touch area for detecting whether each hole can allow light to pass through it to determine whether each hole is covered by an external object. The touch position determining device is connected to the detecting device for determining the touch position of the external object according to whether each hole is covered or not.01-17-2013
20120146954OPTICAL TOUCH SCREEN PANEL - Disclosed is an optical touch screen panel including: a light source unit to generate light parallel with a horizontal axis or a vertical axis of a touch screen; a first beam deflector to increase the width of the light parallel with the horizontal axis to be matched with the width of the horizontal-axis of the touch screen, or increase the width of the parallel light parallel with the vertical axis to be matched with the width of the vertical-axis of the touch screen in order to reflect the parallel light having the increased width; a second beam deflector to reduce the width of the parallel light incident from the first beam deflector in order to reflect the parallel light having the reduced width; and a photodetector unit to sense a touched position of an object on the horizontal-axis or the vertical-axis of the touch screen.06-14-2012
20110157097COORDINATE SENSOR, ELECTRONIC DEVICE, DISPLAY DEVICE, LIGHT-RECEIVING UNIT - A coordinate sensor (06-30-2011
20110157094INFRARED SENSOR INTEGRATED IN A TOUCH PANEL - An infrared source is configured to illuminate the underside of one or more objects on or above a touchable surface of a touch panel. Infrared light reflected from the underside of the object(s) is detected by an infrared sensor integrated in the touch panel below the touchable surface.06-30-2011
20110157093ILLUMINATION DEVICE WITH METALIZED LIGHT-TURNING FEATURES - This disclosure provides systems, methods and apparatus for a front illumination device with metalized light-turning features. In one aspect, an illumination device with integrated touch sensor capability includes a light guide having a metalized light-turning feature and an electrode system for sensing changes to the capacitance between electrodes in the electrode system induced by the proximity of an electrically conductive body, such as a human finger. The metalized light-turning features may be electrically connected to and/or part of the electrode system.06-30-2011
20110157092ELECTRONIC DEVICE WITH TOUCH INPUT FUNCTION - A method for controlling an electronic device with touch input function includes controlling at least two light emitting devices to emit monochromatic light to have a total internal reflection in a sheet of glass. Detecting two intersected light paths obstructed by at least two light detecting devices; sending information of the two intersected obstructed light paths to a central processing unit (CPU); and the CPU determining a position of a touch operation according to information of the two intersected obstructed light paths. An electronic device with touch input function is also provided.06-30-2011
20110157091TOUCH-ENABLED DISPLAY DEVICE - A touch-enabled display device includes a display surface, two light emitting members and two linear image sensing devices. The display surface includes a first corner, a second corner, a third corner, a fourth corner, a first diagonal connecting the first corner and the second corner, and a second diagonal connecting the third corner and the fourth corner. The two light emitting members are respectively disposed near the first corner and the third corner The two linear image sensing devices are disposed near the second corner and the fourth corner. Each linear image device is aligned with one of the two light emitting members and long a diagonal. Each linear image sensing device is capable of detecting an image of a contact location that is parallel to the diagonal.06-30-2011
20110157090MORPHING TOUCHSCREEN KEYBOARD INTERFACE - Embodiments of the present invention address deficiencies of the art in respect to touch interfaces and provide a novel and non-obvious method, system and computer program product for generating touch interface displays. In one embodiment of the invention, a computer-implemented method for generating touch interface displays at a communication device with a touch interface includes initiating a set of calibration exercises, providing a set of instructions to a user of the communication device, receiving calibration data at the touch interface, analyzing the received calibration data to determine if the calibration is complete, repeating said providing and receiving steps until the calibration is complete and generating a touch interface display based on the received calibration data. The computer-implemented method can further include receiving use data for each key touch of the touch interface, defining a set of averages over time for finger skin touch area, finger size data and finger position and automatically resizing, reshaping and repositioning at least one key of the touch interface display based on the defined set of averages.06-30-2011
20130021302OPTICAL COUPLER FOR USE IN AN OPTICAL TOUCH SENSITIVE DEVICE - An optical touch-sensitive device is able to determine the locations of multiple simultaneous touch events. The optical touch-sensitive device includes multiple emitters and detectors coupled with an optical coupler assembly through a waveguide on the surface on the optical-touch sensitive device. The coupler may be side coupled or edge coupled to the waveguide. For both the side coupled or edge coupled cases, the coupler may also be configured to reorient beams to accommodate any orientation of emitters and detectors with respect to the waveguide. The coupler may also be configured to translate beams laterally or vertically to accommodate any position of emitters and detectors. The coupler, and touch-sensitive device more generally, are also configured to prevent ambient light entering the waveguide from hitting the emitters and detectors. Each emitter produces optical beams which are received by the detectors. Touch events disturb the optical beams.01-24-2013
20130021301OPTICAL TOUCH MODULE AND LIGHT SOURCE MODULE THEREOF - An optical touch module disposed on a reference plane and having a sensing area is provided. The optical touch module includes a first light sensing device and a light source module. The first light sensing device is disposed on a first side of the sensing area. The light source module includes a linear light source, a transparent plate and a reflecting device. The linear light source is disposed beside a second side of the sensing area to emit light to the sensing area. The transparent plate is disposed between the linear light source and the second side opposite to the first side. A part of the light is reflected by the transparent plate. Another part of the light passes through the transparent plate. The reflecting device is disposed beside a second surface of the transparent plate to reflect the light reflected from the transparent plate back to the transparent plate.01-24-2013
20130021300TOUCH-SENSING DISPLAY APPARATUS AND ELECTRONIC DEVICE THEREWITH - A touch-sensing display apparatus comprises a display unit with integrated elements, and a planar light guide located in front of the display unit so as to define a touch surface. At least one light emitter is arranged to emit light into the light guide for propagation by total internal reflection inside the light guide, and at least one light detector is arranged to receive at least part of the light propagating inside the light guide. The integrated elements are designed as image-forming elements and touch-sensor elements, wherein the touch-sensor elements comprise the emitter(s) and/or the detector(s) and are arranged along a periphery region of the display unit. The image-forming elements and the touch-sensor elements may be integrated in one and the same composite substrate within the display unit.01-24-2013
20130021299OPTICAL TOUCH PANEL ASSEMBLY AND LIGHT SENSOR THEREOF - A light sensor includes a case, a light reflective layer and a light sensing component. The case has a light incident side. The light incident side is partially covered by the light reflective layer to cause the light incident side to form a light incident area uncovered by the light reflective layer and a light reflective area covered by the light reflective layer and located beside the light incident area. The light sensing component is disposed within the case and has a light sensing surface facing toward the light incident area. An optical touch panel assembly incorporating a plurality of the light sensors is also provided. The optical touch panel assembly includes a touch panel, two above-mentioned light sensors oppositely disposed at two sides of the touch panel.01-24-2013
20130021297TOUCH PANEL - A touch panel includes a transparent substrate defining a touch surface and a non-touch surface, and a light guide plate arranged at the non-touch surface of the transparent substrate. The light guide plate defines a light output surface facing toward the non-touch surface of the transparent substrate, a bottom surface opposite to the light output surface, a light incident surface connected between the light output surface and the bottom surface, and a plurality of spaced refraction zones. Based on the aforesaid arrangement, the touch panel produces a uniform brightness distribution across the screen.01-24-2013
20120242624THIN FILM TRANSISTOR AND METHOD FOR FABRICATING THE SAME, SEMICONDUCTOR DEVICE AND METHOD FOR FABRICATING THE SAME, AS WELL AS DISPLAY - An object of the present invention is to provide a thin film transistor fabricating method including a simplified step of forming contact holes. This method involves previously removing a gate insulating film (09-27-2012
20120242621IMAGE SENSOR AND DISPLAY DEVICE INCORPORATING THE SAME - An image sensor includes an array of sensor pixel circuits, each pixel circuit comprising first and second photosensitive elements. The image sensor is configured such that a field of view of the second photosensitive element is a sub-set of a field of view of the first photosensitive element.09-27-2012
20120242620COMBINED OPTICAL NAVIGATION AND BUTTON - An optical touchpad is responsive to application of a pressure, and a sliding movement executed within a preset interval after the predetermined pressure is applied. A user applies the concurrent predetermined pressure and sliding movement as a combined gesture. A controller receives information pertaining to both the pressure and the sliding movement.09-27-2012
20080252619System for Providing a Frustrated Total Internal Reflection Touch Interface - A system for providing a touch interface on a display are described. The system include providing an emitter on a first side of the display and providing a detector on a second side of the display. The emitter provides an electromagnetic signal to the display. The electromagnetic signal has a path from the emitter to the detector through the display in the absence of a user's touch such that the electromagnetic signal is detected by the detector in the absence of the user's touch. The path includes at least one total internal reflection in the display. The emitter and the detector are configured such that the user's touch at any of the at least one total internal reflection alters the path such that a portion of the electromagnetic signal does not reach the detector.10-16-2008
20080252617DISPLAY APPARATUS WITH OPTICAL INPUT FUNCTION - In making a contact determination between an object and a display screen, a display apparatus of the present invention is capable of adjusting a region on which to make a contact determination in response to the displayed image in a liquid crystal panel, so that the influence by the displayed image can be suppressed. Moreover, for simplifying the contact determination process, the display apparatus sets solid a region in the picked-up image that is not a target of the contact determination, with a predetermined gradation value.10-16-2008
20090315859CAPACITIVE TOUCH PANEL AND FABRICATING METHOD THEREOF - A capacitive touch panel including a substrate, a plurality of first touch pads, a plurality of first dummy pads, an insulator layer, a plurality of second touch pads, and a plurality of second dummy pads is provided. The first touch pads arranged along a first direction are electrically connected. Each first touch pad has at least a first opening. The insulator layer covers the first touch pads and the first dummy pads insulated therefrom. The second touch pads arranged along a second direction are electrically connected and each second touch pad has at least a second opening. The size of the second opening is substantially larger than that of each first dummy pad. The second dummy pads insulated from the second touch pads are disposed on the insulator layer above the first opening, wherein the size of the first opening is substantially larger than that of each second dummy pad.12-24-2009
20080231611INTERACTION BETWEEN OBJECTS AND A VIRTUAL ENVIRONMENT DISPLAY - An interactive table has a display surface on which a physical object is disposed. A camera within the interactive table responds to infrared (IR) light reflected from the physical object enabling a location of the physical object on the display surface to be determined, so that the physical object appear part of a virtual environment displayed thereon. The physical object can be passive or active. An active object performs an active function, e.g., it can be self-propelled to move about on the display surface, or emit light or sound, or vibrate. The active object can be controlled by a user or the processor. The interactive table can project an image through a physical object on the display surface so the image appears part of the object. A virtual entity is preferably displayed at a position (and a size) to avoid visually interference with any physical object on the display surface.09-25-2008
20130141390OPTICAL TOUCH DEVICE AND FRAME THEREOF - An optical touch device includes an indication plane, an image sensing unit, a light emitting unit and a frame. A sensing region is defined on the indication plane. The image sensing unit is disposed at a corner of the indication plane. The light emitting unit is disposed beside the image sensing unit and used for emitting light to the sensing region. The frame is disposed at one side of the indication plane. The frame includes two first inclined surfaces connected to each other and facing the sensing region.06-06-2013
20130141389PORTABLE OPTICAL TOUCH SYSTEM AND OPERATING METHOD THEREOF - A portable optical touch system is disclosed in the present invention. The portable optical touch system includes two camera devices movably connected with each other and respectively disposed on two corners of a plane. Each camera device includes an imaging module for capturing an image of an object on the screen, an adjusting module connected to the imaging module for determining whether the two imaging modules are positioned on the same plane, and a measuring module connected to the imaging module for calculating a distance between the two imaging modules. The portable optical touch system further includes a controlling unit electrically connected to the camera device for calculating a coordinates of the object on the plane by analyzing the distance between the imaging modules and the images captured by the imaging modules.06-06-2013
20080225017Refined Coordinate Detection Method and Error Correction Method for Touch Panel - A refined coordinate detection method for a touch panel, which more finely measures coordinates of an object without increasing the number of infrared emitting/receiving elements, and an error correction method, which minimizes position detection errors caused by received optical level errors due to external environment or their inherent characteristics, are provided. In the detection method, received levels of infrared emitting/receiving elements corresponding to left and right ends of object are measured and stored and the levels and a maximum received level are compared to calculate the refined coordinates. In the correction method, a lower limit level at a position where infrared reception is most significantly impeded by object is calculated through a comparison calculation of maximum and minimum received levels and it is detected that an object is present at a position only when a lower limit level at that position is not greater than the calculated one.09-18-2008
20110261017Light sensing circuit, and remote optical touch panel and image acquisition apparatus including the light sensing circuit - Example embodiments are directed to light sensing circuits having a relatively simpler structure by using light-sensitive oxide semiconductor transistors as light sensing devices, and remote optical touch panels and image acquisition apparatuses, each including the light sensing circuits. The light sensing circuit includes a light-sensitive oxide semiconductor transistor in each pixel, wherein the light-sensitive oxide semiconductor transistor is configured as a light sensing device, and a driving circuit that outputs data. The light sensing circuit may have a relatively simple circuit structure including a plurality of transistors in one pixel. As a result, the structure and operation of the light sensing circuit may be simplified.10-27-2011
20110261015OPTICAL TOUCH DISPLAY DEVICE - An optical touch device includes a display panel and at least a light emitting and receiving unit. The display panel includes a transparent substrate having a touch surface and a plurality of side surfaces adjacent to the touch surface. At least one of the side surfaces is a first light incidence surface and at least one of the side surfaces is a first light emitting surface. Each light emitting and receiving unit includes a linear light source and a light sensing component. The linear light source is disposed beside the first light incidence surface and is configured for providing optical signals into the transparent substrate. The light sensing component is disposed beside the first light emitting surface. The light sensing component is configured for receiving the optical signals from the linear light source. The optical touch display device has advantages of low cost.10-27-2011
20130169596THREE-DIMENSIONAL INTERACTION DISPLAY AND OPERATION METHOD THEREOF - A three-dimensional interaction display includes a display panel having a plurality of light sensing devices, a first light emitting device, a second light emitting device, and a processing circuit. The first light emitting device includes a first light emitting surface including a first pattern, and the first pattern includes a first shape boundary having a first total length. The second light emitting device includes a second light emitting surface including a second pattern, and the second pattern includes a second shape boundary having a second total length. The processing circuit is electrically connected to the plurality of light sensing devices for processing an image obtained by the light sensing devices, calculating the total length of the shape boundary of each of the patterns shown in the obtained image, and determining the corresponding light emitting device according to the total length of the shape boundary of each of the patterns.07-04-2013
20120249482INPUT SYSTEM AND PEN-SHAPED INPUT DEVICE - An input system includes an input device including at least one of a first reflecting section having a reflectance varying in a longitudinal direction, and a second reflecting section having a reflectance varying in a rotational direction, a detection section adapted to detect reflected light from at least one of the first reflecting section and the second reflecting section, and a processing section adapted to obtain at least one of movement amount information of the first reflecting section in the longitudinal direction, and rotation amount information in the rotational direction of the second reflecting section, based on the detection result in the detection section.10-04-2012
20120249477INTERACTIVE INPUT SYSTEM AND METHOD - An interactive input system comprises an optical waveguide, a radiation source directing radiation into the optical waveguide, the radiation undergoing total internal reflection within the optical waveguide in response to at least one touch input on a surface of the optical waveguide. At least one imaging device is positioned adjacent to the waveguide, the at least one imaging device having a field of view looking inside the optical waveguide and capturing image frames thereof. Processing structure processes the image frames captured by the at least one imaging device to determine a location of the at least one touch input based on a frequency of reflections of the radiation appearing in the image frame.10-04-2012
20100085330TOUCH SCREEN SIGNAL PROCESSING - A coordinate detection system can comprise a display screen, a touch surface corresponding the top of the display screen or a material positioned above the screen and defining a touch area, at least one camera outside the touch area and configured to capture an image of space above the touch surface, an illumination system comprising a light source, the illumination system configured to project light from the light source through the touch surface, and a processor executing program code to identify whether an object interferes with the light from the light source projected through the touch surface based on the image captured by the at least one camera. Light can be directed upward by sources positioned behind the screen, by sources positioned behind the screen that direct light into a backlight assembly that directs the light upward, and/or by a forward optical assembly in front of the screen that directs the light upward.04-08-2010
20100085328Touch-Sensitive Display Device And Method - Apparatus for providing a touch-sensitive display are provided. A touch-sensitive display apparatus can include a first layer comprising a plurality of emitters disposed thereupon and a second layer comprising a screen for the display of images visible to the human eye. A first portion of the emitters can emit electromagnetic radiation at one or more first wavelengths invisible to the human eye. The electromagnetic radiation at the first wavelength can be partially or completely transmissible through the second layer. A user can dispose an object proximate to the second layer, causing the reflection of all or a portion of the electromagnetic radiation therefrom. The remaining portion of the emitters can absorb all or a portion of the reflected electromagnetic radiation at the first frequency.04-08-2010
20130169597TOUCH PANEL - A touch panel includes a substrate, a touch sensing electrode, and an optical compensation layer. The touch sensing electrode is disposed on the substrate. The optical compensation layer is disposed on the substrate and covers the touch sensing electrode. A refraction index of the optical compensation layer is smaller than or equal to a refraction index of the touch sensing electrode.07-04-2013
20130169594APPARATUS AND METHOD FOR CONTROLLING 3D IMAGE - An apparatus and method for controlling a 3-dimensional (3D) image using a virtual tool are provided. The apparatus may detect a user object that controls the 3D image, and determine a target virtual tool matching movement of the user object. In addition, the apparatus may display the determined target virtual tool along with the 3D image.07-04-2013
20130135258Optical Touch-Screen Systems And Methods Using A Planar Transparent Sheet - An optical touch screen that utilizes a planar transparent sheet and that is configured to determine the position of a touch event on the transparent sheet is disclosed. Light-source elements and light-sensing elements are operably disposed at a perimeter of the transparent sheet. Light is detected over lines-of-sight between the light-source elements and the light-sensing elements. Attenuated lines-of-sight due to the touch event are determined. Central lines are established based on the attenuated lines-of-sight. The locations of central-line intersections are then established. The average of the locations of the central-line intersections is then used to establish the location of the touch event.05-30-2013
20130135254OPTICAL INTERFERENCE BASED USER INPUT DEVICE - A user input device for an electronic device includes an illumination source and image sensor module. A translucent layer is disposed above the illumination source and the image sensor module. The translucent layer includes at least a first set of patterns disposed thereon. A deformable layer is disposed above the translucent layer. The deformable layer includes at least a second set of patterns. The illumination source is configured to illuminate at least the portion of the translucent layer. The image sensor module includes a field of view that corresponds to at least a portion of the translucent layer. The image sensor module being configured to detect a third set of patterns when the first set of patterns and the second set of patterns are displaced with respect to each other.05-30-2013
20130176283ELECTRONIC APPARATUS, AND METHOD OF OPERATING ELECTRONIC APPARATUS - An electronic apparatus includes: a display unit; an identification unit that optically identifies a kind of an operator positioned on a display face of the display unit; and a control unit that controls content of an operation for the display unit according to the kind of the operator identified by the identification unit.07-11-2013
20130135255DISPLAY SYSTEMS INCLUDING OPTICAL TOUCHSCREEN - This disclosure provides systems, methods and apparatus for a display device having a front light to provide front illumination to the display element included in the display device and an optical touch screen to provide a touch input to the display device. In one aspect, the display device includes a light source disposed to inject light into a backplate of the display device rearward of the display elements and a light redirector disposed to receive light from the backplate and redirect the received light forward of the display elements for optical touch purpose.05-30-2013
20130093728INPUT DEVICE AND IMAGE DISPLAY APPARATUS INCLUDING THE SAME - An input device and an image display apparatus including the same are disclosed. The input device includes first and second light source units arranged spaced apart from each other and configured to respectively output first light having a first color and second light having a second color, a light guide having a circular shape and configured to receive the first light and the second light, synthesize the first light and the second light and output third synthesized light, a touch sensor configured to detect touch input, and a light source controller configured to control the third light output from the light guide based on touch input detected by the touch sensor. Accordingly, it is possible to improve user convenience.04-18-2013
20130113759DISPLACEMENT DETECTION DEVICE AND OPERATING METHOD THEREOF - There is provided a displacement detection device including a light source, an image sensor and a processing unit. The light source provides light to a finger with a light source parameter. The image sensor receives reflected light from the finger, outputs valid images when the light source is being turned on and outputs dark images when the light source is being turned off. The processing unit determines a contact status according to one of the dark images and one of the valid images, and calculates a displacement according to two of the valid images to accordingly adjust the light source parameter.05-09-2013
20130093729PHOTO SENSOR OF A PHOTO TYPE TOUCH PANEL AND CONTROL METHOD THEREOF - The present invention provides a photo sensor of a photo type touch panel, which includes a transistor with a control terminal receiving a first control signal, a first capacitor electrically connected to a first terminal of the transistor, a first photo transistor with a first terminal electrically connected to the first capacitor, and a second photo transistor with a control terminal receiving a second control signal, a first terminal electrically connected to a second terminal of the first photo transistor, and a second terminal receiving a third control signal.04-18-2013
20130093727LIGHT-BASED FINGER GESTURE USER INTERFACE - A light-based finger gesture user interface for an electronic device including a housing for an electronic device, a display mounted in the housing, a cavity, separated from the display, penetrating two opposite sides of the housing, a detector mounted in the housing operative to detect an object inserted in the cavity, and a processor connected to the detector and to the display for causing the display to render a visual representation in response to output from the detector.04-18-2013
20130100083OPTICAL TOUCH PANEL APPARATUS AND RECORDING MEDIUM - An optical touch panel apparatus for detecting a position of a light blocking object on a flat panel 04-25-2013
20130100080OPTICAL TOUCH CIRCUIT AND LIQUID CRYSTAL DISPLAY DEVICE USING SAME - In an exemplary optical touch circuit and a LCD device using the same, an optical sensing unit is turned on or off according to an irradiation light intensity and accordingly generates a first signal. A first signal readout unit is electrically coupled to the optical sensing unit and turned on or off according to a first operation timing sequence and accordingly outputs the first signal. A touch reference unit is for providing a reference voltage. A second signal readout unit is turned on or off according to a second operation timing sequence and accordingly outputs the reference voltage. The touch sensing unit is electrically coupled to the first and second signal readout units and uses a voltage difference between the first signal and the reference voltage as a basis to determine that whether the optical touch circuit is touched or not.04-25-2013
20130100082TOUCH PANELS WITH DYNAMIC ZOOMING AND LOW PROFILE BEZELS - An electronic device may have a touch panel. The touch panel may detect touch events using one or more cameras. The touch panel may include a planar exterior surface, such as a cover glass, that extends over an active region of a display and an inactive peripheral region. The cameras may be located underneath the inactive peripheral region. The cameras may include a light turning element to allow the cameras to detect touch events, without being raised above the exterior surface of the active region of the display (e.g., without having a raised profile). The touch panel may detect touch events using dynamic zooming techniques. As an example, the touch panel may divide the active region into sections, search for touch events in each section, zoom into sections in which touch events are found, and further search the sections in which touch events were found.04-25-2013
20130100078PHOTO-SENSOR TYPE INPUT APPARATUS FOR IDENTIFYING DIFFERENT TYPES OF INPUT EVENTS SIMULTANEOUSLY, AND RELATED DISPLAY APPARATUS THEREOF - A photo-sensor type input apparatus includes an upper substrate, a bottom substrate, at least one first photo sensing device, and at least one second photo sensing device. The bottom substrate is correspondingly disposed below the upper substrate. The first photo sensing device is disposed on the bottom substrate and arranged to detect a received first type input event. The second photo sensing device is disposed on the bottom substrate and arranged to detect a received second type input event. A light sensing ability of the first photo sensing device is different from a light sensing ability of the second photo sensing device.04-25-2013
20130100075Multipoint Source Detection in a Scanned Beam Display - Briefly, in accordance with one or more embodiments, an image or projection cone is projected onto a projection surface via a raster scan to generate the image, or in a light cone. Movements of two or more input sources with respect to projection cone are detected, and a determination is made whether the input sources have crossed a crossover line in the projection cone. If the input sources have moved greater than a threshold amount after crossing the crossover line, position data between the input sources may be exchanged to reflect proper position data for the input sources.04-25-2013
20130100077SELF-ADJUSTING PHOTOSENSIVE TOUCH CIRCUIT AND DISPLAY DEVICE THEREOF - The present invention relates to a self-adjusting photosensitive touch circuit, which includes a light-sensing component, a variable capacitor and a switch component. The light-sensing component is for sensing a touch status and receives a first control signal. The light-sensing component is enabled by a level of the first control signal. The variable capacitor is electrically coupled to the light-sensing component. A capacitance of the variable capacitor is altered along with a voltage difference between two terminals of the variable capacitor. The switch component is electrically coupled to the variable capacitor, and receives a second control signal. The switch component is enabled by a level of the second control signal. Therefore, a range of the gate voltage difference of the light-sensing component can be increased, so as to improve the sensitivity and accuracy of the light-sensing component. Moreover, the present invention also relates to a display device thereof.04-25-2013
20130113758METHOD AND SYSTEM FOR RECOGNIZING TOUCH POINT, AND DISPLAY APPARATUS - A method and a system for recognizing a touch point, and a display apparatus are provided. The method for recognizing the touch point includes emitting, by the display apparatus, an infrared ray (IR) signal to pass through a liquid crystal display (LCD) panel, the LCD panel including regions, each region having a different pattern; photographing, by the digital pen using an IR camera, a pattern through which the IR signal passes at a touch point on the display apparatus that is touched by the digital pen, obtaining an IR image corresponding to the touch point; and recognizing, by the digital pen, the touch point using the IR image.05-09-2013
20130127790TOUCH-SENSING DISPLAY PANEL - A touch-sensing display panel, comprising a plurality of image-forming pixel elements; a planar light guide with a first refractive index, having a front surface forming a touch-sensing region and an opposite rear surface facing the pixel elements; a plurality of light emitters arranged at a peripheral region of the panel to emit light into the light guide for propagation therein through total internal reflection; a plurality of light detectors disposed at the peripheral region for receiving light from the light guide; and an optical layer disposed at the rear surface of the light guide to cover a plurality of the image-forming pixel elements in at least a central region of the panel, wherein said optical layer is configured to reflect at least a part of the light from the emitters impinging thereon from within the light guide.05-23-2013
20130127788METHOD AND APPARATUS FOR DETECTING A MULTITOUCH EVENT IN AN OPTICAL TOUCH-SENSITIVE DEVICE - A touch sensitive optical control device comprising a set of light emitters 05-23-2013
20130127787TOUCH SCREEN PANEL AND DISPLAY APPARATUS HAVING THE SAME - A touch screen panel includes a unit pixel and a light sensing part. The unit pixel is connected to an N-th gate line and an M-th data line. The light sensing part is adjacent to the unit pixel. The light sensing part includes a first sensing switching element and a second sensing switching element. The first sensing switching element includes a gate electrode connected to the N-th gate line, a drain electrode connected to a P-th read out line and a source electrode connected to a first node. The second sensing switching element includes a gate electrode to which a first voltage is applied, a drain electrode connected to the first node and a source electrode connected to an X-th gate line. N, M, P and X are positive integers. Thus, an aperture ratio of the touch screen panel can be improved.05-23-2013
20130127789METHOD AND APPARATUS FOR DETECTING A MULTITOUCH EVENT IN AN OPTICAL TOUCH-SENSITIVE DEVICE - A touch sensitive optical control device comprising a set of light emitters 05-23-2013
20130127783APPARATUS AND METHOD FOR CONTROLLING INFORMATION DISPLAY - A display for controlling information display. In one embodiment, the display has a display panel having a display area for displaying information and a peripheral portion surrounding the display area, a plurality of acoustic/ultrasonic transducers, {X05-23-2013
20130141395LIGHT-BASED TOUCH SURFACE WITH CURVED BORDERS AND SLOPING BEZEL - A light-based touch-sensitive surface, including a housing, a surface attached to the housing for receiving touch input, a plurality of light sources in the housing for emitting light that crosses the surface, a plurality of light receivers in the housing for detecting the light emitted by the light sources, a curved lens adjacent to the surface through which the light emitted by the light sources passes, including two substantially similarly curved exterior panels, one of which forms a curved rim for the surface, and a calculating unit in said housing, connected to the light receivers, for calculating a touch location based on an absence of light expected to be received by the receivers.06-06-2013
20130141394ELECTRONIC SYSTEMS AND TRACK DETECTION METHODS - An electronic system is provided, including a writing device, first and second image capturing units and a control module. The writing device has a pen point to write on a writing board, and has a first light-emitting unit to emit a first detection light. The first and second image capturing units are respectively disposed on a first corner and a second corner of the writing board to receive the first detection light in a writing mode, in order to respectively generate first and second image signals. The control module obtains the coordinates of the writing device on the writing board according to the first and second image signals, such that, when the writing device writes on the writing board, the control module determines to operate in the writing mode, and simultaneously records a writing track of the writing device.06-06-2013
20130141391TOUCH CONTROL DEVICE, TOUCH CONTROL SYSTEM, AND TOUCHING CONTROL METHOD THEREOF - A touch control device, a touch control system, and a touching control method thereof are disclosed. The touch control device includes a light emission module, a first capture module, a second capture module, a computing module, and a first wireless transmission module. The light emission module projects a light signal to become a touch surface. When an object approaching the touch surface, the first capture module and the second capture module are used for capturing a first reflected signal and a second reflected signal according to reflect the light signal. The computing module is used for computing a first capturing angle and a second capturing angle according to the first reflected signal and the second reflected signal and computing a coordinate data of the object. The first wireless transmission module is used for transferring the coordinate data to a controlled system via a wireless transmission.06-06-2013
20130141393FRAMELESS OPTICAL TOUCH DEVICE AND IMAGE PROCESSING METHOD FOR FRAMELESS OPTICAL TOUCH DEVICE - A frameless optical touch device includes an indication plane, an image sensing unit, a light emitting unit and a processing unit. There is no any frame disposed on a periphery of the indication plane such that a first light from an external environment can enter a sensing region defined on the indication plane through the periphery of the indication plane. The light emitting unit emits a second light to the sensing region. When there is no any touch object in the sensing region, the image sensing unit senses the first and second lights to generate a first image. When a touch object is in the sensing region, the image sensing unit senses the first and second lights to generate a second image. The processing unit compares brightness of the first image with brightness of the second image so as to obtain a position blocked by the touch object.06-06-2013
20130141392OPTICAL TOUCH MODULE AND RELATED METHOD OF ROTARY ANGLE ADJUSTMENT - A method of adjusting a rotary angle of an optical touch module is disclosed in the present invention. The method includes measuring a length and a width of a panel; measuring a first moving distance and a second moving distance of a sensor of the optical touch module as moving from the first position to the second position; calculating a first projecting distance and a second projecting distance of the sensor at the first position according to the length and width of the panel; calculating a first angle and a second angle of the sensor at the second position according to the first moving distance, the second moving distance, the first projecting distance and the second projecting distance; and calculating the rotary angle of the sensor that moves from the first position to the second position according to the first angle and the second angle.06-06-2013
20110216043ELECTRONIC DEVICE AND ELECTRONIC SYSTEM - To provide a display device in which a moving-image mode and a still-image mode which consumes less power can be switched on one screen automatically or by operation by a user on one display screen. The display device includes a display panel including a photosensor for detecting touch input by a user; a display control circuit for displaying a keyboard on part of the display screen; and a storage medium storing a program (an application program) for controlling power supplied to a still-image area of the displayed keyboard. The program for controlling power supplied to the still-image area enables power saving.09-08-2011
20110216041TOUCH PANEL AND TOUCH POSITION DETECTION METHOD OF TOUCH PANEL - A touch panel and a touch position detection method are presented. The touch panel includes: a touch unit, a light source unit array positioned along a first edge of the touch unit and including a first light source and a second light source; and a detection unit array positioned along a second edge and including a detection unit generating a detection signal by detecting light from the light source unit array. The first light source radiates light having a first optical axis, the first optical axis extending in a first direction that makes a first angle with respect to a reference direction, and the second light source radiates light having a second optical axis, the second optical axis extending in a second direction that makes the first angle with respect to the reference direction. The reference direction is perpendicular to the second edge.09-08-2011
20090278816Systems and Methods For Resolving Multitouch Scenarios Using Software Filters - Software heuristics can be applied to determine which two points of a plurality of potential touch points are likely actual touch points based on a potential touch point's location relative to a predefined touch area and/or a characteristic of a hypothetical touch corresponding to the potential touch point. For instance, a software filter may determine if a potential touch point lies outside the touch area based on comparing coordinates of the potential touch point to boundaries of the predefined touch area. As another example, if the size of the hypothetical touch exceeds a threshold and is in a particular position (e.g., near an edge of the touch area), the potential touch point may be identified as a ghost touch point. As another example, a filter may evaluate whether a shape of the hypothetical touch exceeds a threshold for asymmetry; if so, the potential touch point may be identified as a ghost touch point.11-12-2009
20080198144OPTICAL WAVEGUIDE FOR TOUCH PANEL - An optical waveguide for a touch panel which includes a planar base; light emitting cores and light incident cores provided on a surface of the base; and an over-cladding layer covering the cores. The light emitting core has a first lens portion provided at the end thereof for suppressing lateral divergence of the emitted light beam, the over-cladding layer has a second lens portion provided in an edge portion thereof covering the end of the light emitting core for suppressing vertical divergence of the emitted light beam, the over-cladding layer has a third lens portion provided in an edge portion thereof covering the end of the light incident core for vertically converging the incident light beam, and the light incident core has a fourth lens portion provided at the end thereof for further laterally converging the incident light beam.08-21-2008
20080198143Image display apparatus with image entry function - An image display apparatus with image entry function capable of high-speed and high-accuracy direct screen entry without increasing the peripheral circuit scale or the number of circuit elements for each pixel that lower the pixel aperture ratio. A first pixel circuit and a second pixel circuit are alternately arrayed horizontally. First and second data lines are connected to a data driver and a sensor signal processor circuit. Selector switches are connected to the input terminal of the data driver. Gray scale voltages are sent from the data driver to the first and second data lines, and first and second photo sensor signals are sent to the sensor signal processor circuit.08-21-2008
20110221706TOUCH INPUT WITH IMAGE SENSOR AND SIGNAL PROCESSOR - An interactive input system comprises at least two imaging assemblies capturing image frames of a region of interest from different vantages and processing structure processing image frames captured by the imaging assemblies to determine the location of a pointer within the region of interest, wherein each imaging assembly comprises an image sensor and integrated signal processing circuitry.09-15-2011
20110227879Detecting Ambient Light Levels in a Vision System - The detection of ambient light on an optical touch-sensitive device is disclosed. For example, one disclosed embodiment comprises capturing an image of at least a portion of a display screen with a camera located within the display device, and determined if ambient light in the image is at an acceptable level for display screen operation. Then, a visual representation is displayed representing whether the ambient light level is acceptable for display screen operation.09-22-2011
20110227873TOUCH CONTROLLED DISPLAY DEVICE - A touch controlled display device is disclosed. The device comprises: a display panel including a display panel including a first surface, a second surface opposing the first surface and a plurality of pixels between the first and second surfaces, each pixel including a transmission area and a display area, the transmission area being configured to transmit light therethrough, an infrared source located on the side of the second surface of the display panel and configured to irradiate infrared light toward the first surface through the second surface, and an infrared sensor located on the side of the second surface of the display panel and configured to detect infrared light from the first surface through at least one transmission area of the plurality of pixels.09-22-2011
20110273404LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal panel (11-10-2011
20110273403PHOTO-SENSING LCD TOUCH DEVICE - A photo-sensing LCD touch device with a light guide plate is provided. The light guide plate is disposed in an LCD touch panel, and a light source is disposed on one side of the light guide plate to provide lights into the light guide plate, yielding an occurrence of total reflection of the lights in the light guide plate. When a touch object touches the light guide plate, the total reflection of the lights would be decomposed so that the lights are emitted out of the light guide plate. Therefore, a photo-sensor can detect a variance of a photo-current of the scattered lights to accurately determine a touched position. Accordingly, the LCD touch device would not rely on ambient light and can avoid a drawback of an undesirable shadow.11-10-2011
20130135253OPTICAL TOUCH DEVICE - Disclosed is an optical touch device, which includes: a substrate defining a touch area, a chamfer formed on at least one corner of the substrate; at least one sensing component disposed on a side of the chamfer of the substrate, the sensing component comprising a sensing element and a luminous element; at least one first reflective element disposed around the touch area for reflecting a light emitted from the luminous element to the touch area; at least one second reflective element disposed above the sensing element for guiding the light reflected from the first reflective element into the sensing element. The optical touch device of the present invention has a simple structure and a compact size.05-30-2013
20110248960HOLOGRAPHIC TOUCHSCREEN - Disclosed are various embodiments of a holographic touchscreen and methods of configuring such devices. In certain embodiments, a touchscreen assembly can include a holographic layer configured to receive incident light and turn it into a selected direction to be transmitted through a light guide. The holographic layer can be configured to accept incident light within an acceptance range and so that the selected direction is within a range of directions so as to allow determination of incidence location based on detection of the turned light. A light source can be provided so that light from the source scatters from an object such as a fingertip near the holographic layer and becomes the incident light. The determined incidence location can represent presence of the fingertip at or near the incidence location, thereby providing touchscreen functionality. In certain embodiments, the distance between the fingertip and the holographic layer can be estimated based on measurement of a width of a distribution resulting from the detected directed light turned by the holographic layer.10-13-2011
20130147762OPTICAL NAVIGATION MODULE AND LENS FOR OPTICAL NAVIGATION MODULE - Disclosed herein is an optical navigation module, including: an LED that is a light source diffusing light; a lens having a light transmitting part and a light receiving part integrally formed and refracting and collecting light diffused from the light source; a window transmitting light diffused from the LED and light reflected by a subject; and a sensor receiving light reflected from the window, detecting the received light, and outputting the detected light as a signal.06-13-2013
20130147763Optical Touch Panel System and Positioning Method Thereof - An optical touch panel system includes: a reflective element disposed on a first side of the touch control area; two lighting elements respectively disposed on a second side and a third side of the touch control area, wherein the second side and the third side are adjacent to each other, and the third side is opposite the first side; a first light projection apparatus including a mirror and a light generator, disposed on the first side and at a location adjacent to a fourth side of the touch control area; an image sensor capturing a first picture and a second picture respectively when the light generator is inactivated and activated; and a processor calculating a coordinate of the object according to geometrical information of an projected object image and a projected mirror image of the object in the first picture and the second picture.06-13-2013
20130147764Multi-functional active matrix organic light-emitting diode display - A multi-functional active matrix display comprises a transparent front sheet, a semi-transparent layer of light emissive devices adjacent the rear side of the front sheet and forming a matrix of display pixels, and a solar cell layer located behind the light emissive devices for converting both ambient light and internal light7 from the light emissive devices into electrical energy, the solar cell layer including an array of electrodes on the front surface of the solar cell layer for use in detecting the location of a change in the amount of light impinging on a portion of the front surface of the solar cell layer.06-13-2013
20130147765OPTICAL TOUCH DEVICE, AND LIGHT SOURCE ASSEMBLY AND DISPLAY MODULE THEREOF - An optical touch device includes a sensing area, at least a light source assembly and a light sensing component. The light source assembly is disposed beside the sensing area and includes a plurality of first point light sources configured to sequentially emit a first beam into the sensing area. The light sensing component has a field of view of the entire sensing area and is configured to sense the first beams. A light source assembly and a display module used in the optical touch device are also disclosed.06-13-2013
20100295821Optical touch panel - An optical touch panel assembly includes a touch panel that has photosensors and light sources, wherein each light source is energizable to produce a field of illumination that illuminates multiple photosensors at a time. The touch panel also includes control circuitry to energize and de-energize the light sources so that at least one but less than all of the light sources are turned on at a time in a sequence to illuminate an entire active area of the touch panel and to analyze output signals from the photosensors. The control circuitry is further configured to identify a low level output signal corresponding to a proximity event and to determine a location of the proximity event on the touch panel.11-25-2010
20100309169Optical Touch Screen with Reflectors - A touch panel including a generally planar surface, at least two illuminators, for illuminating a sensing plane generally parallel to the generally planar surface, at least one selectably actuable reflector operative, when actuated, to reflect light from at least one of the at least two illuminators, at least one sensor for generating an output based on sensing light in the sensing plane and a processor which receives the output from the at least one sensor, and provides a touch location output indication.12-09-2010
20100309168OPTICAL TOUCH SYSTEM - An optical touch system includes an infrared touch pen, a display panel, an image sensor, a time recorder, and a processor. The infrared touch pen is used for touching the display panel and can emit an infrared beam. The image sensor is configured to receive the infrared beam emitted by the infrared touch pen. The time recorder is configured for reordering a first time at which the infrared touch pen emits the infrared beam and a second time at which the image sensor receives the infrared emission. The processor connects with the image sensor and the time recorder and is configured for computing a distance between the touch of the infrared touch pen and the image sensor and the coordinates of the infrared touch pen.12-09-2010
20120274608SIMPLIFIED LIGHT SENSING CIRCUIT, LIGHT SENSING APPARATUS INCLUDING THE LIGHT SENSING CIRCUIT, METHOD OF DRIVING THE LIGHT SENSING APPARATUS, AND IMAGE ACQUISITION APPARATUS AND OPTICAL TOUCH SCREEN APPARATUS INCLUDING THE LIGHT SENSING APPARATUS - In a simplified light sensing circuit, a light sensing apparatus including the light sensing circuit, a method of driving the light sensing apparatus, and an image acquisition apparatus and optical touch screen apparatus including the light sensing apparatus, the light sensing circuit includes an oxide semiconductor transistor including a channel layer including an oxide semiconductor material, for each pixel. The oxide semiconductor transistor is configured to operate as a light sensing device that senses light and a switch that outputs light sensing data.11-01-2012
20120274607OPTICAL FINGER NAVIGATION DEVICE - An optical finger navigation (OFN) device for use devices such as handheld portable devices is presented. The OFN device may include a lead frame, a light sensor, a clear mold compound encapsulating the light sensor and the lead frame so as to form the package. The mold compound may include a light guide system disposed thereon to direct light towards the light sensor. The OFN package may further include a light opaque material disposed on the mold compound to shield the light sensor against stray lights.11-01-2012
20110242056Optical Recognition User Input Device And Method Of Recognizing Input From User - Disclosed is an optical recognition user input device and method for recognizing user input that can prevent an error in recognition of plural touch points. A plurality of optical transmission/reception modules (T/R) are disposed around a touch panel including a plurality of pixels. Each of the optical T/R modules includes a light emitting unit and a light receiving unit. A controller controls operation of the optical T/R modules and calculates a user touch location on the touch panel based on an optical signal received by the light receiving unit.10-06-2011
20110242054PROJECTION SYSTEM WITH TOUCH-SENSITIVE PROJECTION IMAGE - A projection system includes an image projector, an invisible light transmitter and an invisible light sensor. The image projector is used for projecting a projection image on a physical plane. The invisible light transmitter is used for generating an invisible light plane, which is parallel with the physical plane. The invisible light sensor is in communication with the image projector. When a pointing object is placed on a touching point, an invisible light beam reflected from the pointing object is received by the invisible light sensor. According to the invisible light beam, a sensing signal indicative of a spatial coordinate position of the touching point is acquired and transmitted to the image projector. The image projector recognizes and calculates the spatial coordinate position of the touching point according to the sensing signal and performs a controlling action according to the spatial coordinate position.10-06-2011
20110242053OPTICAL TOUCH SCREEN DEVICE - An optical touch screen device includes a display panel, a light source module, an image capture module, a sound detecting member, and a processing unit. The display panel includes a display screen. The light source module is configured for emitting light to illuminate an input device on the display screen. The image capture module is configured for capturing images of the illuminated input device, determining coordinates of a position of the input device on the display screen based on the images, and generating a first input signal associated with the coordinates of the input device. The sound detecting member is configured for detecting a stroke of the input device on the display screen, and generating a second input signal associated with the stroke of the input device. The processing unit is configured for generating a command signal based on the first input signal and the second input signal.10-06-2011
20110234544SOLID STATE IMAGE SENSOR SUITABLE FOR TOUCH SCREENS - Disclosed is a sensor apparatus comprising a plurality of pixels, a digital to analog converter for providing a ramp signal, A comparator for comparing the output level of each pixel to said ramp signal, and memory for storing the digital value that corresponds to said output level for each pixel, the sensor apparatus thereby converting the analog output level of each pixel to a digital value. The apparatus operates by providing an analog output that is sourced from the digital to analog converter used to provide said ramp signal.09-29-2011
20110234543SYSTEM AND METHOD FOR GESTURE DETECTION AND FEEDBACK - A computer device with a sensor subsystem for detecting off-surface objects, that carries out continued processing of the position and shape of objects detected in the vicinity of the device, associates these positions and shapes with predetermined gesture states, determines if the object is transitioning between gesture states and provides feedback based on the determined transition between the gesture states.09-29-2011
20110234541OPTICAL NAVIGATION DEVICES - An imaging device may have an imaging surface and a sensor. The imaging surface may be illuminated by a first source and reflect at least some of the illumination to the sensor to detect an image. The imaging device may have a predetermined width and an optical path passing therethrough. The imaging device may be illuminated by a second source, and the illumination of the second source may be directed to one or more predetermined regions on or near the imaging surface to produce an optical effect associated with the imaging surface.09-29-2011
20110234540BACKGROUND IMAGE UPDATING METHOD AND TOUCH SCREEN - A background image updating method is adapted to a touch screen including a first and a second image modules. A first and a second images are captured by the first and the second image modules as a first and a second background images, respectively. (a) Whether an absolute value of a brightness difference between a third image captured by the first image module and the first background image is greater than a predetermine value is compared. (b) If the result of the step(a) is yes, whether an absolute value of a brightness difference between a fourth image captured by the second image module and the second background image is greater than another predetermine value is compared. (c) If the result of the step(b) is yes, a fifth and a sixth images are captured by the first and the second image modules as the first and the second background images, respectively.09-29-2011
20110234539Device and Method of Identifying Position of Determinant via Combining Optical Image with Single Axis of Touch Panel - A device and method of identifying the position of a determinant via combining optical image with a single axis of touch panel includes sensing identification of any single axis via only one image sensor module provided at a side or outside the work area for retrieving images and combining with the identification device of the touch panel in the work area, then, calculating the relative position of the determinant through the triangulating relationship and the formula x×tan θ=y in response to retrieved images and identified information from the touch panel.09-29-2011
20110234538OPTICAL TOUCH DEVICE - An optical touch device includes a transparent substrate and at least a light emitting and receiving unit. The transparent substrate has a touch surface, a first light incidence surface and a first light emitting surface. Each light emitting and receiving unit includes a linear light source, a light path adjusting component and a light sensing component. The linear light source is disposed beside the first light incidence surface. The light path adjusting component is disposed between the linear light source and the first light incidence surface and configured for adjusting the incidence angles of the optical signals striking at the first incidence surface so that each of the optical signals enters into the transparent substrate through the first incidence surface with a predetermined angle. The light sensing component is disposed beside the first light emitting surface. The optical touch device has a high light utility efficiency.09-29-2011
20110234537OBJECT-SENSING DEVICE - An object-sensing device is presented. The device includes a waveguide and a substrate holding a liquid crystal layer, wherein radiation propagates through the waveguide via total internal reflection. A radiation emitting element is positioned along a radiation input surface of the waveguide, and a radiation receiving element is positioned to receive radiation exiting the waveguide. The radiation receiving element may be positioned across the waveguide from the radiation emitting element. Alternatively, the radiation receiving element may be positioned on a surface that contacts the radiation input surface of the waveguide that is optically coupled to the radiation emitting element.09-29-2011
20110234536TOUCH SCREEN SUBSTRATE AND METHOD OF MANUFACTURING THE SAME - In a touch screen substrate and a method of manufacturing the same, the touch screen substrate includes a base substrate, a light blocking pattern, a first sensing element and a first switching element. The light blocking pattern includes an inorganic layer formed on the base substrate and a light blocking layer formed on the inorganic layer, the light blocking layer transmitting an infrared light and absorbing a visible light. The first sensing element is formed on the light blocking pattern and senses the infrared light. The first switching element is electrically connected to the first sensing element. Thus, an undercut may be prevented from being formed at a lower portion of the light blocking pattern, and an adhesive strength between the light blocking pattern and the base substrate may be enhanced.09-29-2011
20110234535TOUCHED POSITION IDENTIFICATION METHOD - A touched position identification method for identifying a position touched by an object on an optical touch panel is provided. The optical touch panel includes optical sensors, a light guide plate and a controllable light source. The controllable light source is disposed at a light incident side of the light guide plate. In the method, a turn-on action and a turn-off action are alternatively performed on the controllable light source with a predetermined interval. At least an n09-29-2011
20100315383TOUCH SCREEN ADOPTING AN OPTICAL MODULE SYSTEM USING LINEAR INFRARED EMITTERS - Disclosed is an optical modular touch screen using a linear infrared emitter, in which the linear infrared emitter is disposed at each of three or four sides of a rectangular frame defining the touch screen, and infrared rays emitted from the linear infrared emitter is detected through two or three optical modules, thereby recognizing a shadow generated by finger touch and grasping a position thereof.12-16-2010
20100315382TOUCH-SENSOR-PROVIDED LIQUID CRYSTAL DISPLAY DEVICE ( amended - The present invention relates to a touch-sensor-provided liquid crystal display device (12-16-2010
20100315381MULTI-TOUCH SENSING APPARATUS USING REAR VIEW CAMERA OF ARRAY TYPE - A multi-touch sensing apparatus using a rear view camera of an array type is provided. The multi-touch sensing apparatus may include a display panel to display an image, a sensing light source to emit light to sense a touch image which is generated by an object and displayed on a back side of the display panel, and a camera to divide and sense the touch image. The camera may be arranged in an edge of a lower side of the multi-touch sensing apparatus, or a mirror to reflect the touch image may be included in the multi-touch sensing apparatus.12-16-2010
20100315380OPTICAL TOUCH APPARATUS AND OPERATING METHOD THEREOF - An optical touch apparatus is disclosed. The optical touch apparatus comprises a light emitting module, a noise suppressing module, a light sensing module, and a processing module. The light emitting module emits at least one sensing beam, and the at least one sensing beam comprises a plurality of sensing rays. If an emitting angle of a specific sensing ray among the plurality of sensing rays toward a light sensor of the light sensing module is larger than a default value, the noise suppressing module will block the specific sensing ray from emitting into the light sensor. After the light sensing module generates a sensing result according to the condition of the light sensing module receiving the at least one sensing beam, the processing module will determine the position of a touch point according to the sensing result.12-16-2010
20100315379Display Devices With Integrated Optical Components For Use in Position Detection - Displays, such as LCD displays, can include integrated optical components such as energy emitters, detectors, reflective material, etc. for position detection based on energy traveling over a touch surface. A display device comprising a panel can accommodate at least one optical component to direct light over the touch surface and/or to receive light directed over the touch surface. The touch surface may be part of the display or a layer atop the display. The device with integrated component(s) can be included in a display, which includes a display bezel. Embodiments may use a frame structure to position an optical component close to the top surface of the display and may be mounted to a flat panel atop the panel bezel and beneath the display bezel and/or a transparent member can interface with a support member which supports optical component(s) that direct and/or receive light traveling over the transparent member.12-16-2010
20100315378PLASMA DISPLAY AND DRIVING METHOD THEREOF - A plasma display device with touch sensing function includes a display panel having a plurality of first and second electrodes, and third electrodes crossing the first and second electrodes, and first, second and third drivers adapted to drive the first, second and third electrodes in a plurality of subfields including a sensing subfield having a first period and a second period. During the first period, the first driver is adapted to apply a first voltage higher than a reference voltage to the first electrodes, the second driver is adapted to time sequentially apply a second voltage lower than the first voltage to the second electrodes. During the second period, the first driver is adapted to apply a fourth voltage lower than the first voltage to the first electrodes, and the third driver is adapted to time sequentially apply a third voltage higher than the reference voltage to the third electrodes.12-16-2010
20100315377TOUCH PANEL - A touch panel is provided. The touch panel includes a plurality of pixels, wherein each pixel includes M*N sub-pixels, at least m sub-pixels each include at least one photo sensitive area and at least one effective display area, the other n sub-pixels each include only at least one effective display area, and M≧2, N≧1, m≦M, m+n=M and m≧0. A first color filter film is disposed over a photo sensor of the photo sensitive area and a second color filter film is disposed over the effective display area, wherein the color of the first and the second color filter films are different at the at least m sub-pixels. The photo sensors at the same column are electrically connected by a signal readout line, wherein only one signal readout line is disposed at every M column of the sub-pixels.12-16-2010
20100315376CONTROL INTERFACE ASSEMBLIES AND VEHICLES INCLUDING SAME - A control interface assembly includes a touch sensor panel, a laser assembly, first and second laser detectors, and a controller. The touch sensor panel includes a touch surface extending within a touch plane. The laser assembly emits first and second portions of laser light. At least one of the first and second portions of laser light is directed within a laser plane which is spaced from the touch plane. The first and second laser detectors are positioned to receive the respective first and second portions of laser light. The controller is coupled with each of the touch sensor panel and the first and second laser detectors. The controller is configured to detect engagement of the touch surface by an operator's finger and is further configured to detect passage of an operator's finger through the laser plane. Vehicles including a control interface assembly are also provided.12-16-2010
20130155025OPTICAL TOUCH DEVICE AND LIGHT SOURCE ASSEMBLY - An optical touch device includes a sensing area, a first linear light source disposed next to a first side of the sensing area, a light penetration and reflection component disposed between the first linear light source and the first side, and a light sensing component configured to have a field of view of the entire sensing area. The light penetration and reflection component includes a substrate and a light penetration and reflection structure disposed on the substrate. The light penetration and reflection structure includes a plurality of prime pillars protruding from a surface, opposite to the first linear light source, of the substrate and thereby forming a plurality of reflection regions and light penetration regions. The prism pillars each are configured to have a length direction parallel to the first side. Each prime pillar has at least a reflection surface. The reflection surfaces are included in the reflection regions.06-20-2013
20130155026NEW KIND OF MULTI-TOUCH INPUT DEVICE - A multi-touch method includes, in response to at least one finger of a user pointing toward a computer screen, recognizing an eye and at least one finger in an image frame taken by a camera; mapping a first coordinate of the recognized finger in the image frame to a second coordinate of the finger on the computer screen; mapping a third coordinate the recognized eye in the image frame to a fourth coordinate of the eye on the computer screen; determining whether the fourth coordinate is in the proximity of the second coordinate; in response to a positive decision, determining the second coordinate as a multi-touch point.06-20-2013
20130155027OPTICAL TOUCH SCREEN SYSTEMS USING TOTAL INTERNAL REFLECTION - A touch screen, including a layer of light-transmissive material having an upper surface that is exposed for touch by one or more objects, a plurality of light emitters underneath the upper surface, a first lens assembly for directing light beams emitted by the light emitters into the layer at an angle such that the light beams, when entering the layer, remain confined to the layer by total internal reflection when the light beams are not absorbed by any of the objects touching the upper surface, a plurality of light detectors for detecting light beams and for generating outputs indicating the amounts of light detected, a second lens assembly for directing light beams at a surface of the layer towards the light detectors, and a calculating unit for determining respective one or more locations of the one or more objects touching the upper surface, based on outputs of the light detectors.06-20-2013
20130155028OPTICAL POSITION DETECTION DEVICE, HAND DEVICE, AND DISPLAY DEVICE WITH POSITION DETECTION FUNCTION - A position detection device includes: a light source adapted to form a light intensity distribution of a detection light beam; a first detector adapted to receive a reflected light beam of the detection light beam reflected by an object in a detection area where the light intensity distribution is formed; a transmissive member disposed between the detection area and the light source, and between the detection area and the first detector, and having a first surface directed toward the detection area and a second surface directed toward the light source; a second detector adapted to receive a light beam reflected by the second surface out of the detection light beam; a position detector adapted to detect the object based on the detection result in the first detector; and a light blocking member disposed between the second detector and the detection area, and adapted to block the reflected light beam.06-20-2013
20130155029PASSIVE TOUCH SYSTEM AND METHOD OF DETECTING USER INPUT - A passive touch system includes a passive touch surface and at least two cameras associated with the touch surface. The at least two cameras acquire images of the touch surface from different locations and have overlapping fields of view. A processor receives and processes images acquired by the at least two cameras to detect the existence of a pointer therein and to determine the location of the pointer relative to the touch surface. Actual pointer contact with the touch surface and pointer hover above the touch surface can be determined.06-20-2013
20130155024TOUCH PIXEL STRUCTURE, TOUCH PIXEL ARRAY SUBSTRATE AND TOUCH DISPLAY PANEL - A touch pixel array substrate suitable for a touch display panel includes a first substrate, scan lines, data lines, signal-control lines, read-out lines, voltage-shielding lines, active devices, pixel electrodes, and photo-sensing units. The scan lines, the data lines, the signal-control lines, the read-out lines, and the voltage-shielding lines are located on the first substrate. Each of the read-out lines is located between two adjacent data lines. Each of the voltage-shielding lines is located between one of the read-out lines and one of the data lines. Both sides of each of the read-out lines are adjacent to two voltage-shielding lines. The photo-sensing units are located on the first substrate and electrically connected to the scan lines, the signal-control lines, and the read-out lines correspondingly. A touch display panel and a touch pixel structure are also provided.06-20-2013
20120280943SIZE/SCALE AND ORIENTATION DETERMINATION OF A POINTER IN A CAMERA-BASED TOUCH SYSTEM - A touch system includes a touch surface and at least two cameras associated with the touch surface. The at least two cameras acquire images of the touch surface from different locations and having overlapping fields of view. A digital signal processor is associated with each camera. The digital signal processors process pixel data acquired by selected pixel subsets of the at least two digital cameras to generate pointer characteristic data when a pointer exists in the acquired images. The pointer characteristic data identifies edges of the pointer. A master digital signal processor triangulates the edge information in the pointer characteristic data to determine a bounding area that represents a pointer perimeter.11-08-2012
20120280942TOUCHSCREEN FOR DETECTING MULTIPLE TOUCHSCREENS - A touchscreen system comprises a touch area. At least one transmitter is positioned proximate to outer edges of the touch area for transmitting first beams in a first direction. At least one beam splitter is positioned proximate to the outer edges of the touch area for splitting the first beams into at least second and third beams that travel through the touch area in at least second and third directions, respectively. The at least one beam splitter comprises a plurality of deflecting elements. Receivers are positioned proximate to the outer edges of the touch area for receiving the at least second and third beams.11-08-2012
20120280941Projection display system for table computers - The invention pertains to a multiple-touch detection device for projection displays. According to one aspect of the present invention, an image sensor is disposed in a light engine of a projection system. The sensor detects signals from respective touches on a display screen and transmits the signals to an image processing module to determine respective coordinates of the touches.11-08-2012
20120280940POSITION DETECTION SYSTEM, DISPLAY PANEL, AND DISPLAY DEVICE - Disclosed are: a position detection system having improved flexibility in selection of line sensors; and others. In the position detection system (PM) of the present invention, a phosphor (11-08-2012
20120280939Optical Touch Screen Apparatuses And Methods Of Driving The Optical Touch Screen Apparatuses - An optical touch screen apparatus in which an oxide semiconductor transistor is used as a light sensing device, and a method of driving the optical touch screen apparatus. The optical touch screen apparatus includes an array including a plurality of light sensing pixels for sensing incident light, a gate driver for providing each of the light sensing pixels with a gate voltage and a reset signal and a signal output unit for receiving a light sensing signal from each of the plurality of light sensing pixels to output a data signal. The gate driver includes a plurality of gate lines that provide a gate voltage to each of the light sensing pixels and at least one reset line that provides a reset signal to each of the light sensing pixels and is electrically connected to the plurality of light sensing pixels.11-08-2012
20120280938TOUCH TYPE ELECTROPHORETIC DISPLAY APPARATUS - A touch type electrophoretic display apparatus, including: at least one photo-controlled voltage source, used for generating at least one reference voltage, wherein the level of the at least one reference voltage gets lower/higher as the intensity of environmental light increases/decreases; and a plurality of photo sensing circuits, each of which including: a photo transistor, generating a channel current according to an incident light; a light intensity storing capacitor, used for integrating the channel current to generate a photo sensing voltage; and an output switch, used for providing an output signal.11-08-2012
20080252616Visual simulation of touch pressure - The simulation of touch pressure on a touch-sensitive display is disclosed. In one disclosed embodiment, a touch pressure is simulated on a touch-sensitive display by detecting inputs corresponding to each of an untouched display and two or more measures of touch pressure, and displaying images on the display corresponding to the untouched display and each measure of touch pressure. In this manner, a user may be provided with a richer visual response to a touch-sensitive display input.10-16-2008
20130181949FINGER SENSOR HAVING PIXEL SENSING CIRCUITRY FOR COUPLING ELECTRODES AND PIXEL SENSING TRACES AND RELATED METHODS - A finger sensor may include pixels, pixel sensing traces each associated with a respective pixel, and electrodes overlying the pixel sensing traces. The finger sensor may also include pixel sensing circuitry coupled to the pixel sensing traces and the electrodes. The pixel sensing circuitry may be capable of operating in a measurement mode by operating the pixels so that at least some of the pixels are active, and at least some other of the pixels are inactive and coupling pixel sensing traces associated with the inactive pixels to a voltage reference. The pixel sensing circuitry may also be capable of operating in the measurement mode by coupling electrodes associated with the active pixels to the voltage reference and coupling electrodes associated with the inactive pixels to a drive signal.07-18-2013
20130181950PORTABLE ELECTRONIC DEVICE AND METHOD THEREFOR - An electronic device includes an object sensor for detecting motion of an object, such as a stylus or finger, relative to device and during a period of contactless object movement. A motion sensor, such as an accelerometer, detects device motion during the period of contactless object movement. A processor determines a gesture that corresponds to the movement of the object and to movement of the device. This device, and the associated method, results in a more accurate determination of an intended gesture, such as a three-dimensional gesture. For example, the processor, or gesture determinator, can compensate for movement of the device when determining the gesture corresponding to detected contactless movement of the object.07-18-2013
20110279414AREA SENSOR AND LIQUID CRYSTAL DISPLAY DEVICE WITH AREA SENSOR - A liquid crystal display device of the present invention includes a liquid crystal panel (11-17-2011
20130120318ENHANCED MULTI-TOUCH DETECTION - Enhanced multi-touch detection, in which a graphical user interface for an application is projected onto a surface, and electromagnetic radiation is emitted. The electromagnetic radiation is collectively emitted by an array defining a layer aligned parallel with the surface and overlapping at least a region of the surface onto which the graphical user interface is projected. Electromagnetic radiation is detected that reflects off of an object interrupting the defined layer where the defined layer overlaps the region of the surface onto which the graphical user interface is projected, and indicating a position of the object is output.05-16-2013
20130120319Methods, Systems, Apparatuses, Circuits and Associated Computer Executable Code for Detecting Motion, Position and/or Orientation of Objects Within a Defined Spatial Region - The present invention includes methods, systems, apparatuses, circuits and associated computer executable code for detecting motion, position and/or orientation of objects within a defined spatial region. According to some embodiments, a defined spatial region (hereinafter also referred to as the: “Active Space”) may be monitored, by any type of appropriate sensor or sensors, and position, orientation and movement of objects within the active space may be determined. Determined position, orientation and movement of objects within the active space may be translated to control signals or other forms of input for an associated computational device.05-16-2013
20130120321DISPLAY DEVICE - A photosensor-equipped display device is provided having a combination of visible and non-visible light sources where a voltage drop is minimized when the non-visible light source is turned on. The display device includes: an active matrix substrate; photosensors (05-16-2013
20110298757TOUCH PANEL INPUT SYSTEM AND INPUT PEN - A touch panel input system of the present invention includes a touch panel integrated liquid crystal display device (12-08-2011
20110298755MATRIX SENSOR - The present invention relates to a matrix optical sensor including: 12-08-2011
20110310063Input-Output Device and Method for Driving Input-Output Device - Accuracy of photodetection is improved. An input-output device includes a light unit including Z (Z is a natural number of 3 or more) first light-emitting diodes that emit light with a wavelength in a visible light range and a second light-emitting diode that emits light with a wavelength in an infrared range; a display circuit that is supplied with a display selection signal, supplied with a display data signal in accordance with the display selection signal, and set to be in a display state based on data of the input display data signal; and Y (Y is a natural number) photodetectors including a filter for absorbing light with a wavelength in a visible light range, supplied with a photodetection control signal is input, and generating data based on the illuminance of incident light in accordance with the input photodetection control signal.12-22-2011
20110310062Input-Output Device and Method for Driving the Same - To increase the light detection accuracy, a method for driving an input-output device that includes a first light unit, a second light unit, a display circuit, and Y light detection circuits (Y is a natural number of 2 or more) is proposed. The same light-detection control signal is input to the Y light detection circuits. In a frame period set by a display selection signal, the first light unit is lit by sequentially switching Z light-emitting diodes and emitting light, and the second light unit is lit by making the white light-emitting diode emit light when the first light unit is not lit. In a period when the second light unit is lit, Y pieces of data corresponding to the illuminance of light entering the Y light detection circuits are generated.12-22-2011
20110310061Method for Driving Input-Output Device, and Input-Output Device - Accuracy of photodetection is improved. A method for driving an input-output device which includes a light unit, a display circuit, and Y (Y is a natural number of 2 or more) photodetectors is provided. The same photodetection control signal is input to the Y photodetectors. The light unit is lit while the Z light-emitting diodes are sequentially switched and emit light in a frame period set by the display selection signal. In a cycle that is longer than a cycle of switching the lighting states of the light unit, Y pieces of data based on the illuminance of light incident on the Y photodetectors are generated in a period during which the light unit is lit.12-22-2011
20110310060Light Uniforming System for Projecting Type Touch Control Apparatus - The present invention discloses a light uniforming system for projecting type touch control apparatus. This system comprises at least one infrared light source to generate an infrared light. At least one light-guiding device is optically coupled to the infrared light source to guide the infrared light to at least one optical module, wherein the optical module connects to at least one image generating device. The optical module receives the infrared light guided by the light-guiding device, and reflects the infrared light to the image generating device to generate a uniforming infrared image. At least one visible light source is introduced to generate at least one visible light, wherein the visible light is transmitted to the optical module and reflected to the imaging generating device to generate a visible light image. Furthermore, at least one projecting lens is used to receive and project the visible light image and the infrared image.12-22-2011
20130187891RESILIENT LIGHT-BASED TOUCH SURFACE - A light-based touch sensitive device, including a housing, a surface encased in the housing, a layer of elastic material above the surface, a plurality of light pulse emitters mounted in the housing, that transmit light pulses through the layer, a plurality of light pulse receivers mounted in the housing, that receive the light pulses transmitted through the layer, and a calculating unit, mounted in the housing and connected to the receivers, that determines a location of a pointer that touches the layer and creates an impression in the layer, based on outputs of the receivers.07-25-2013
20130187892OPTICAL TOUCH DEVICE - An optical touch device includes: two light beam scanning modules each scanning a touch region of a panel body with a scanning light beam, whose incident angle varies with time, and outputting a time index signal associated with the incident angle; two light sensor modules each sensing a corresponding reflected scanning light beam generated due to presence of a touch within the touch region so as to output a sensing signal; and a processing unit for locating the touch based on the time index signal from each light beam scanning module, the sensing signal from each light sensor module, and a look-up table having pieces of angle information corresponding to a series of time indexes and associated with the incident angle of each scanning light beam.07-25-2013
20100079407IDENTIFYING ACTUAL TOUCH POINTS USING SPATIAL DIMENSION INFORMATION OBTAINED FROM LIGHT TRANSCEIVERS - A system comprises a touch-screen having multiple light transceivers configured to emit and detect light. The system also comprises processing logic coupled to the light transceivers, where the processing logic is configured to obtain spatial dimension information of multiple possible touch points on the touch-screen using the detected light. The processing logic uses the spatial information to predict which of the multiple possible touch points comprise actual touch points and which of the multiple possible touch points comprise phantom touch points.04-01-2010
20110316813OPTICAL TOUCH DISPLAY - When an object touches a touch panel, a projection light source projects a predetermined image including image information and forms an object image having the image information on a surface of the object. An image sensor captures a reflection image including the object image. Then, an angle is calculated according to an image location of the object in the reflection image and a relative position of predetermined axis, and a distance between the object and the image sensor is calculated by comparing the predetermined image with the location, size and/or phase of the image information of the reflection image so as to determine a coordinate of the object on the touch panel according to the angle and the distance.12-29-2011
20120013577OPTICAL TOUCH STRUCTURE - An optical touch structure including a light guide element, a light source, a reflecting mirror, and an image sensor is provided. The light guide element has a light-emitting surface. The light guide element guides the light provided by the light source to the light-emitting surface. The extending direction of the reflecting mirror is substantially perpendicular to the light-emitting surface. The intersection of the reflecting mirror and the light guide element is defined as a first position. The light guide element and the reflecting mirror define a touch range. The image sensor is disposed on a second position opposite to the first position. The sensing area of the image sensor at least covers the touch range. When the proceeding path of the first direction light is shorter than that of the second direction light, the strength of the second direction light is larger than that of the first direction light.01-19-2012
20120019485INFORMATION PROCESSING APPARATUS AND CONTROL METHOD THEREOF - According to the present invention, even if a plurality of operators perform gesture operations in three-dimensional space, the three-dimensional spatial gesture of each operator is accurately associated with the target object of the three-dimensional spatial gesture. For this, a projector displays at least one selection-target object on an upper surface of a table. When a pointer operated by an operator comes in contact with the upper surface of the table, a two-dimensional coordinate detecting apparatus detects the contact position, and determines which object has been designated by the operator. In this stage, among pointers detected by a three-dimensional coordinate detecting apparatus, a pointer having a position closest to the contact position is determined, and the pointer determined to be the closest is decided as a tracking target. Thereafter, the tracking-target pointer is tracked by the three-dimensional coordinate detecting apparatus to determine the operator's gesture pattern.01-26-2012
20120019484LIGHT SCAN TYPE TOUCH PANEL - A light scan type touch panel includes: at least two light scanning units located outside of a display screen at one side; a plurality of light guide units located at other sides of the display screen; and a light receiving unit located at at least one end of each of the plurality of light guide units. Each of the light guide units includes: a light guiding member having a light incidence plane and a light emission plane; a diffusion sheet located at the light incidence plane; a plurality of reflection sheets located at planes of the light guiding member other than the light incidence plane and the light emission plane; and diffuse reflection inducing units located at one side of the light guiding member, facing one of the plurality of reflection sheets.01-26-2012
20120019483OPTICAL TOUCH-CONTROLLED DISPLAY DEVICE AND ITS OPTICAL TOUCH-CONTROLLED MODULE - An optical touch-controlled module including a frame, a plurality of optical transceivers, and three reflective sticks is provided. The frame can be combined with a display module and includes a plurality of bars. The bars are connected with each other and surround a frame opening. The optical transceivers are disposed on the frame and located separately on the two opposite ends of one of the bars. Each of the reflective strips is disposed on one of the bars, and one of the reflective strips is located between the other two reflective strips. The reflective strips surround the frame opening and reflect the light emitted from each of the optical transceivers. Moreover, an optical touch-controlled display device including the optical touch-controlled module is also provided.01-26-2012
20120019482FLEXIBLE DISPLAY DEVICE AND METHOD FOR THE SAME CAPABLE OF REDUCING ACCIDENTAL CONTACT-INDUCED MALFUNCTIONS - A flexible display device includes a base, a flexible display panel, a detecting unit and a control unit. The flexible display includes a touch control unit that could be exposed outside of or received within the base. The detecting unit is used to detect the operating state of the flexible display panel. Then, the control unit controls the touch control unit according to a detected result of the detecting unit. Accordingly, the flexible display device according to the present invention may effectively reduce the accidental contact-induced malfunctions.01-26-2012
20120019481Controller of Contact Sensing Type Using Optical Principle for Controlling a Pointer on a Display Screen - The present invention of a controller of contact inductive type using optical principle for controlling a pointer on a display screen includes an optical element, an inbound light source for illuminating the optical element, and a motion transducer for receiving the reflected light from the optical element. The optical element is a lens component having the characteristics of total internal reflection. The optical element having a light source area, the inbound light source enters the optical element through the light source area. An Intensified structure is located on the bottom of the optical element for intensifying the refraction and reflection percentages of the light inside the optical element, in order to utilize the light at a higher ratio. The inbound light source is finally reflected to a contact surface on top of the optical element for placing the portion of the tip of a human digit. An array of micro structure is located on the contact surface for intensifying the brightness of the reflected light from where the portion of the tip of the human digit is placed, the light is then directed to the motion transducer through a surface on the bottom of the optical element.01-26-2012
20130194235Multi-sensor input device - A method of calibration including powering up an input device that includes a touch sensor and placing the touch sensor in a normal mode of operation. The input device scans the touch sensor to detect a user input data and determines whether the user input is detected within a predetermined time period. If no user input is received during the predetermined time period, the method includes placing the touch sensor in a calibration mode of operation, performing a calibration process for the touch sensor, and returning the touch sensor to the normal mode of operation. Typically, the predetermined time period is greater than or equal to 30 seconds. In certain embodiments, the calibration process is performed a single time after powering up the input device. In some embodiments, the method further includes detecting a user input on one or more additional sensors within the predetermined time period.08-01-2013
20130194236OPTICAL INPUT DEVICE AND INPUT DETECTION THEREOF - An optical input device integrates functions of fingerprint recognition, movement detection, and physiological analysis, and has a touch surface for receiving touch input of a finger. When a finger contacts the touch surface, the optical input device captures images from the touch surface, detects movement of the finger to generate a movement signal, extracts a fingerprint feature and a vessel blood changing feature from the images, analyzes and compares the fingerprint feature for identity recognition, and performs calculation according to the vessel blood changing feature to generate a physiological signal.08-01-2013
20130194237PRESSURE SENSOR AND APPARATUS FOR SENSING PRESSURE AND TOUCH SCREEN INCLUDING THE SAME - Disclosed is a film or a panel that may measure pressure while interacting with an electronic device. A pressure sensor according to the present invention includes: a light source unit to generate light; an optical waveguide to transfer, to a light receiving unit, the light that is generated by the light source unit; and the light receiving unit to receive the light that is transferred through the optical waveguide. The optical waveguide includes a pressure sensing unit to adjust the quantity of light that is transferred through the optical waveguide based on a pressure. The light receiving unit senses the pressure based on the change in the quantity of light that is generated by the light source unit and is transferred through the optical waveguide.08-01-2013
20130194238INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD, AND COMPUTER PROGRAM - An information processing device includes a display unit; an object image obtaining unit configured to obtain images of objects to be displayed on the screen of the display unit; a real size obtaining unit configured to obtain information related to the real size of the objects to be displayed on the screen of the display unit; and a calculating unit configured to process the images of the objects, based on the real size of the objects obtained by the real size obtaining unit.08-01-2013
20130194239IMAGE PICKUP DEVICE, METHOD OF MANUFACTURING THE SAME, AND IMAGE PICKUP DISPLAY SYSTEM - An image pickup device includes a sensor substrate. The sensor substrate includes: plural photoelectric conversion elements and driving elements for the plural photoelectric conversion elements which are formed on a substrate; wirings electrically connected to the driving elements; and a shield electrode disposed in a region between the plural photoelectric conversion elements and the wirings in a layer different from that of the wirings.08-01-2013
20130194240Optical Input Devices with Sensors - Methods and apparatus relating to input devices are described. In one embodiment, an optical or an infrared sensor may be used to detect rays focused by a lens. A touch location (e.g., associated with location of a finger, a pen, a surface contact (with a table or mouse pad, for example), etc.) may be determined based on the detected rays. Other embodiments are also disclosed.08-01-2013
20120032925HANDWRITING INPUT DEVICE - This handwriting input device is equipped with an object to be coated 02-09-2012
20120032924TOUCH SCREEN APPARATUS - A touch screen apparatus includes a mirror part arranged on a side of a quadrilateral touch area, retroreflectors arranged on remaining three sides of the touch area, first and second light transmitting and receiving parts, each being disposed on each of two edges formed by one of the retroreflectors and emitting light to the touch area and detecting reflected light out of the emitted light by the mirror part and the retroreflectors, an angle extracting part calculating a plurality of light emitting angles for a location from which no reflected light is received, by at least one of the first and second light transmitting and receiving parts, and a coordinate generating part calculating a coordinate pair of a location in which light paths corresponding to the plurality of light emitting angles calculated by the angle extracting part intersect with each other.02-09-2012
20120032919RESOLUTION ENHANCEMENT - A method of enhancing input imaging resolution includes sequentially blocking light from different portions of an object with a series of resolution-enhancing patterns displayed between the object and an image detector. The method further includes detecting light filtered by the series of resolution-enhancing patterns and integrating light detected while different resolution-enhancing patterns of the series of resolution-enhancing patterns are displayed between the object and the detector.02-09-2012
20130201156OPTICAL TOUCH NAVIGATION - The present disclosure describes touch interfaces that feature optical touch navigation. A lighting device distributes a light over an optical element that, in turn, generates a light beam at an exit of the optical element by internally reflecting the light. A sensing device captures images in response to the light beam striking the sensing device. A processing device detects an object proximate to the optical element by comparing successive images captured by the sensing device.08-08-2013
20130201157USER INTERFACE DEVICE AND METHOD OF PROVIDING USER INTERFACE - Provided is a user interface device and a method of providing a user interface. The user interface device includes a motion detection unit, and a control unit configured to perform an operation corresponding to the motion pattern of the input unit, wherein the motion detection unit includes a plurality of camera modules installed around both sides of the display unit to photograph the input unit, a position determination unit configured to calculate position coordinate values, at which the input unit is disposed on the virtual input space, from an image of the input unit obtained by the respective camera modules, and a motion pattern determination unit configured to detect the motion pattern of the input unit based on the position coordinate values. Therefore, a user can more comfortably and intuitively control an electronic instrument system.08-08-2013
20130201158MULTI-TOUCH RECOGNITION APPARATUS AND CONTROL METHOD THEREOF - Disclosed herein are a multi-touch recognition apparatus and a control method thereof. The multi-touch recognition apparatus executes blur filtering for noise removal when an image is input through a camera unit photographing a screen of a display panel supporting multi-touch, calculates and outputs a difference image obtained by removing the background image stored in the storage unit from the blur-filtered image, calculates a new background image using the difference image and a binary image of the difference image, and updates the background image stored in the storage unit using the calculated new background image, thereby effectively removing a background other than multi-touch and thus improving multi-touch recognition performance.08-08-2013
20130100085OPTICAL TOUCH SCREEN - The present invention relates to an optical touch screen, including a flat plate display panel, a case mounted and assembled with the flat plate display panel, brackets assembled on the case, a camera module mounted on the brackets, and an iris formed on the brackets and through which infrared incident on the camera module passes.04-25-2013
20130100084OPTICAL TOUCH SCREEN AND METHOD FOR ASSEMBLING THE SAME - The present invention relates to an optical touch screen and a method for assembling the same, the screen including a a flat plate display panel; a case mounted and assembled with the flat plate display panel; brackets assembled at each corner of the case; a camera module mounted at each bracket; and a retro reflector arranged along an inner lateral surface of the case.04-25-2013
20130100076CONTROL SYSTEM FOR INTEGRATING MULTIPLE SETS OF SENSING PLANE DATA - A control system for integrating multiple sets of sensing plane data, including: a plurality of driving units, used for driving a plurality of sensor arrays to receive multiple sets of sensing plane data; and at least one control unit, used for integrating the multiple sets of sensing plane data into a set of image data and outputting the set of image data to a central processing unit, wherein the central processing unit is used for executing an application software program to convert the set of image data into multiple sets of array data.04-25-2013
20120299878INPUT FUNCTION DISPLAY DEVICE - An input function display device includes: a position information reading unit that is provided with an imaging element optically reading a position information pattern representing a coordinate position on a plane; and a display unit that performs display on the basis of marks read from the position information pattern recorded in a display area, wherein the display unit includes a transparent conductive film having a conductive pattern in which the position information pattern is applied onto the transparent substrate, and a display portion that performs display using the conductive pattern as a common electrode.11-29-2012
20120299877Optical Touch Display Device - An optical touch display device is provided. The optical touch display device includes a front frame, a light guide strip, a photosensitive element, and a light source. The front frame includes a body portion having a display opening, at least one positioning board located on a corner of the body portion, and a protecting cover located on the body portion. An end of the protecting cover is adjacent to the positioning board. An opening groove is defined between the protecting cover and the body portion. The body portion, the positioning board, and the protecting cover are integrally formed. The light guide strip is placed in the opening groove. The photosensitive element is fixed on the positioning board. The light source is located between the photosensitive element and the light guide strip, and a light-emitting side of the light source faces a light inlet side of the light guide strip.11-29-2012
20120086673TOUCH DISPLAY DEVICE - A touch display device includes a device housing, a display module, and an optical touch module. The display module is located within the device housing and has a display region and a peripheral region surrounding the display region. The optical touch module is configured on the display module. Besides, the optical touch module includes a light guide element, a light source, and a photo sensor. The light guide element has a top surface and includes a light guide portion and an outer frame portion. The light guide portion is located on the display region. The outer frame portion extends from an edge of the light guide portion and is connected to the device housing. The light source supplies light to the light guide portion. The photo sensor receives the light from the light guide portion. The outer frame portion covers the light source and the photo sensor.04-12-2012