| PIXART IMAGING INC Patent applications |
| Patent application number | Title | Published |
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| 20120127129 | Optical 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 |
| 20120127077 | METHOD AND APPARATUS FOR DETECTING DISPLACEMENT WITH SUB-PIXEL ACCURACY - A method of detecting displacement with sub-pixel accuracy includes the steps of: capturing a first array image and a second array image; interpolating the first array image to form a reference image; interpolating the second array image to form a comparison image; comparing the reference image with the comparison image so as to obtain a displacement. The present invention also provides an apparatus for detecting displacement with sub-pixel accuracy. | 05-24-2012 |
| 20120120026 | OPTICAL 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 |
| 20120120024 | TOUCH 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 |
| 20120113252 | DISTANCE MEASURING METHOD, DISTANCE MEASURING SYSTEM AND PROCESSING SOFTWARE THEREOF - A distance measuring system includes a light source module, an image capturing device and a processing module. The light source module transmits a light beam having a speckle pattern to a first flat surface and a second flat surface, and an object. The image capturing device captures the image of the speckle pattern shown on the first and second flat surfaces, and captures the image of the speckle pattern shown on a surface of the object to produce a first reference image information, a second reference image information, and an object image information. The processing module calculates a displacement vector of the speckle pattern according to the first and second reference image information. The processing module calculates the relative distance between the object and the first flat surface or the second flat surface according to the position of the speckle pattern on the object image information and the displacement vector. | 05-10-2012 |
| 20120113000 | CURSOR CONTROL METHOD AND APPARATUS - A cursor control method for controlling a cursor on an image display includes: providing at least two reference points for generating light of a predetermined spectrum and defining a predetermined area; providing an image sensor pointing inside the predetermined area; receiving the light of the predetermined spectrum by the image sensor to form a digital image; identifying positions and shapes of the images of the reference points on the digital image to form a first parameter; performing distance and angle compensations on the first parameter; moving the aiming point of the image sensor inside the predetermined area to form a second parameter; and calculating an displacement of the images of the reference points on the digital image according to the compensated first and second parameters so as to accordingly control the cursor. The present invention further provides a cursor control apparatus. | 05-10-2012 |
| 20120107545 | MICROMACHINED STRUCTURES - A micromachined structure includes a substrate and a suspended structure. The substrate has a cavity formed thereon. The suspended structure is formed on the cavity of the substrate. The suspended structure includes a first metal layer, a second metal layer, and a first dielectric layer positioned between the first and second metal layers, wherein the first dielectric layer has a first opening in communication with the cavity through an opening formed in the first metal layer. | 05-03-2012 |
| 20120105217 | REMOTE DEVICE AND REMOTE CONTROL SYSTEM - There is provided a remote device including an image sensing module, a processing unit, an input unit and a transmitter. The image sensing module is configured to detect at least one of a plurality of identification signals to generate an image frame. The processing unit controls the transmitter to send a control signal associated with the identification signal closest to a center of the image frame and an input signal from the input unit. There is further provided a remote control system. | 05-03-2012 |
| 20120098795 | OPTICAL 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 |
| 20120098793 | ON-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 |
| 20120092252 | CURSOR CONTROL METHOD - The present invention provides a cursor control method for adjusting a smoothness of a cursor motion shown on an image display according to a trace variation detected by a detection device. | 04-19-2012 |
| 20120075253 | OPTICAL 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 |
| 20120068940 | ELECTRONIC DEVICE - An electronic device includes a housing, an optical touch module, and a detecting unit. The housing includes a first body and a second body, and an angle is formed between the first body and the second body. The optical touch module executes a positioning function by sensing signals. The detecting unit is configured to the optical touch module, and is used for detecting the angle. When the angle is smaller than a predetermined angle, the detecting unit instructs the optical touch module to pause executing the positioning function, so as to avoid false position determinations by the optical touch module. | 03-22-2012 |
| 20120062517 | OPTICAL 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 |
| 20120057758 | DISTANCE MEASUREMENT METHOD AND SYSTEM, AND STORAGE MEDIA - A distance measurement system provided by the present invention comprises a light source module, for projecting a light beam having a speckle pattern to a plurality of reference flat surfaces and an object which are located at different position points, so as to show an image of the speckle pattern on each of the reference flat surface and the object. The speckle pattern contains a plurality of speckles. The invention generates a plurality of reference image information through capturing the image of the speckle pattern on each of the plurality of reference flat surfaces and generates an object image information through capturing the image of the speckle pattern on the object. The Invention further generates a plurality of comparison results through comparing the plurality of reference image information, and computes the position of the object through performing an interpolation operation to generate the plurality of comparison results. | 03-08-2012 |
| 20120057175 | DISTANCE MEASUREMENT METHOD AND SYSTEM, AND PROCESSING SOFTWARE THEREOF - A distance measurement system and method are provided. The distance measurement method first projects a light beam with a speckle pattern to reference planes and an object to allow the reference planes and a surface of the object each have an image of the speckle pattern, the speckle pattern having a plurality of speckles. Next, images of the speckle pattern reflected by the reference planes are captured to generate reference image information, and an image of the speckle pattern reflected by the surface of the object is captured to generate an object image information. A processing module which may be a processing software can compare the object image information with the reference image information to obtain several similarity scores. If the most the most similarity score is greater than a threshold value, the processing module identifies the corresponding reference plane, thereby computing the position of the object. | 03-08-2012 |
| 20120057023 | DISTANCE MEASUREMENT SYSTEM AND METHOD - A distance measurement method comprising: projecting a light beam having a speckle pattern to at least one reference plane to show a plurality of images with the speckle pattern on the at least one reference plane. The speckle pattern has a plurality of speckles, so as to capture the image with the speckle pattern on the reference plane to obtain a plurality of reference image information. When the object enters the area illuminated by a light source module, an image with the speckle pattern on a surface of an object is captured to obtain an object image information. Then, a plurality of brightness relationships among each of the speckles with adjacent speckles rounding each speckle are computed according to the reference image and the object image information to obtain relative brightness information of each speckle, which is used to compute position of the object. | 03-08-2012 |
| 20120044363 | INTERACTION CONTROL SYSTEM, METHOD FOR DETECTING MOTION OF OBJECT, HOST APPARATUS AND CONTROL METHOD THEREOF - A method for controlling a host apparatus, includes steps of the followings. First, a pattern is projected to a detection region. Second, images of the detection region are captured and image information stream is generated based on the images. Third, an image information associated with the pattern is identified to be a background image information. Fourth, a currently captured image information is subtracted to the background image information to identify if an object appears in the detection region. Fifth, a motion of the identified object is determined based on a variation of the pattern reflected from the identified object to generate a control instruction to the host apparatus. A host apparatus, an interaction control system and a method for detecting a motion of an object are also provided. | 02-23-2012 |
| 20120038554 | LIFT DETECTION METHOD FOR OPTICAL MOUSE AND OPTICAL MOUSE WITH LIFT DETECTION FUNCTION - A lift detection method for an optical mouse and an optical mouse with a lift detection function are presented. An average brightness value of pixels captured by part of sensing units of an image sensor is computed after each scanning, and two average brightness values obtained from two adjacent times of scanning are compared, to determine a brightness change of the pixels in each scanning, thereby acquiring a placing state of the optical mouse accordingly. | 02-16-2012 |
| 20120026319 | DISTANCE MEASURING SYSTEM AND DISTANCE MEASURING METHOD - The present invention provides a distance measuring system including a light source, an image sensor and a control and processing unit. The light source projects a light section onto an object with a projection angle. The image sensor senses reflected light from the light section on the object. The control and processing unit controls the light source to project the light section with the projection angle and determines a window of interest of the image sensor according to the projection angle and a predetermined system parameter. The present invention further provides a distance measuring method. | 02-02-2012 |
| 20120020529 | DISPLACEMENT ESTIMATION METHOD AND DISPLACEMENT ESTIMATION DEVICE USING THE SAME - The present invention provides a displacement estimation method including the steps of: acquiring an image frame and determining a quality threshold according to a sampling parameter; calculating a quality parameter of the image frame; and comparing the quality parameter and the quality threshold to determine whether to post-process the image frame. In the displacement estimation method of the present invention, the quality threshold can be adjusted dynamically so as to reduce the possibility of outputting error displacement. The present invention further provides a displacement estimation device. | 01-26-2012 |
| 20120020520 | METHOD AND APPARATUS FOR DETECTING MOTION OF IMAGE IN OPTICAL NAVIGATOR - A system and method for determining a motion vector uses both a main block from an image and at least one ancillary block relating to the main block from the image. The main block and ancillary block are then tracked from image to image to provide a motion vector. The use of a composite tracking unit allows for more accurate correlation and identification of a motion vector. | 01-26-2012 |
| 20120019715 | DISPLAY PANEL AND ASSEMBLING METHOD OF THE SAME - A display panel and an assembling method of the same are described. An image capture module is electrically disposed on a substrate of a display module, such that the image capture module and the display module are combined into an integrated structure, so as to reduce the overall size of a display assembled by using the display panel. | 01-26-2012 |
| 20120019443 | TOUCH SYSTEM AND TOUCH SENSING METHOD - A touch system comprises a transparent panel, a first image sensing module, a second image sensing module and a processing circuit. The first image sensing module is at least partially disposed on a first flat surface of the transparent for obtaining an image above the first flat surface. The second image sensing module is at least partially disposed under a second flat surface of the transparent for obtaining an image of the first flat surface through the second flat surface. When two pointers approach the first flat surface, the processing circuit calculates possible coordinates of the pointers according to the image obtained by the first image sensing module and calculates coordinates of the pointers according to the image obtained by the second image sensing module, so as to compare all of the coordinates to obtain actual coordinates of the pointers from the possible coordinates. | 01-26-2012 |
| 20120013885 | DISTANCE MEASURING DEVICE AND METHOD FOR MEASURING DISTANCE - A distance measuring device having a measuring range and configured for measuring a distance of at least an object located in the measuring range is provided. The distance measuring device includes a light emitting component, a diffusing component, an adjusting component and an image sensing component. The light emitting component is configured for emitting a light beam. The diffusing component is disposed on a transmission path of the light beam and is configured for transforming the light beam into a measuring light beam with a specific pattern to irradiate the object. The adjusting component is configured for adjusting an incidence angle and an incidence location of the light beam striking at the diffusing component. The image sensing component has a field of view covering the measuring range. The distance measuring device has a far measurable distance. A method for measuring distance and another distance measuring device are also provided. | 01-19-2012 |
| 20120013532 | HYBRID POINTING DEVICE - The present invention discloses a hybrid pointing 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. 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 pointing 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. | 01-19-2012 |
| 20120007834 | OPTICAL 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 |
| 20120001848 | INTERACTIVE POINTING DEVICE CAPABLE OF SWITCHING CAPTURE RANGES AND METHOD FOR SWITCHING CAPTURE RANGES FOR USE IN INTERACTIVE POINTING DEVICE - An interactive pointing device capable of switching capture ranges includes an image capturing element and a processing unit. The image capturing element operates in a first capture range or a second capture range. The image capturing element is used for capturing a light source, and outputting an image signal. When a distance from the interactive pointing device to the light source is smaller than a reference value, the processing unit controls the image capturing element to detect the light source with the first capture range, and the processing unit converts the image signal into a first coordinate data. When the distance is greater than the reference value, the processing unit controls the image capturing element to detect the light source with the second capture range, and the processing unit converts the image signal into a second coordinate data. | 01-05-2012 |
| 20120001054 | SENSING DEVICE AND IMAGE SENSOR MODULE THEREOF - An image sensor module is installed in a sensing device, and is used to detect a reflected light of an object. The image sensor module includes a carrier, a light sensing element, and a package body. The light sensing element is disposed on a substrate. The carrier is disposed on the substrate in the sensing device. The light sensing element is installed in the carrier, and is electrically connected with the substrate via multiple solder balls. The package body is installed on the carrier, and has a reflecting and diverting element, which is located between the light sensing element and the object and is used for reflecting reflected light of the object and diverting the reflected light towards a receiving direction of the light sensing element. The light sensing element receives the reflected light and generates a corresponding sensing signal. | 01-05-2012 |
| 20110320013 | HOME APPLIANCE CONTROL DEVICE - There is provided a home appliance control device for obtaining various parameters of each active object according to a variation between a plurality of current images acquired by an image sensor or according to a relation of a current image acquired by the image sensor with respect to a reference image or a reference data thereby determining an operation state of a home appliance. | 12-29-2011 |
| 20110317146 | OPTICAL DISTANCE DETECTION SYSTEM - There is provided an optical distance detection system which includes a light source and a detection device. The light source is configured to illuminate a surface of an object. The detection device is configured to receive a reflected light from the surface of the object and to output a distance of the object according to the reflected light. The detection device includes a sensing module and a calculation module. The sensing module is configured to receive the reflected light to accordingly generate an image. The calculation module is for outputting the distance according to a light spot position and a light spot size of the reflected light forming on the image. | 12-29-2011 |
| 20110317040 | DETECTION DEVICE - A detection device includes an image capture element, a control signal generator, and a processor. The image capture element is used for capturing an optical signal, and outputting an image signal. The control signal generator is used for generating a control signal. The processor selectively converts the image signal into an object feature or an image feature in response to the control signal. Such a detection device can appropriately convert an operation mode, so as to have both efficacies of reducing the amount of transferred data and processing complex image data. | 12-29-2011 |
| 20110316773 | INTERACTIVE POINTING DEVICE CAPABLE OF SWITCHING CAPTURE RANGES AND METHOD FOR SWITCHING CAPTURE RANGES - An interactive pointing device capable of switching capture ranges includes an image capturing element and a processing unit. The image capturing element is used for capturing an optical signal, and outputting an image signal. The processing unit is used for determining a switching signal, and responsible for processing and analyzing the image signal. Through the determination about the switching signal and the coordinate conversion of the image signal by an arithmetic unit, the interactive pointing device capable of switching capture ranges is enabled to be operable in hosts with different resolutions. | 12-29-2011 |
| 20110309234 | IMAGE SENSING MODULE - The present invention provides an image sensing module including an image sensing device and a calculation device. The image sensing device includes a plurality of pixels for acquiring an operation image containing an object image. The calculation device stores a look-up table regarding a temperature related parameter and a position deviation of the object image at each pixel associated with the temperature related parameter, and selects a deformation error from the look-up table according to the temperature related parameter corresponding to the operation image so as to correct a current position of the object image in the operation image. | 12-22-2011 |
| 20110304590 | TOUCH 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 |
| 20110304588 | OPTICAL 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 |
| 20110304587 | APPARATUS 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 |
| 20110299086 | SENSING DEVICE AND IMAGE SENSING SYSTEM THEREOF - A sensing device includes a housing and an image sensing system disposed in the housing and used for detecting a reflected light from an object. The image sensing system includes a substrate, a light sensing element, and a reflection and redirection element. The light sensing element is disposed on the substrate. The reflection and redirection element is disposed between the light sensing element and the object, and used for reflecting and redirecting the reflected light from the object to a receiving direction of the light sensing element, such that the light sensing element receives the reflected light and generates a corresponding sensing signal. | 12-08-2011 |
| 20110285643 | OPTICAL TOUCH DISPLAY DEVICE - An optical touch display device includes a display unit and at least one light sensing module. The display unit includes a first substrate and a display layer. The first substrate has a display area and a non-display area surrounding the display area. The display layer is disposed on the display area of the first substrate. The light sensing module is disposed on an upper surface of the non-display area of the first substrate. A side surface of the light sensing module has a light sensing window, and at least a portion of the light sensing window is adapted to receive light above the display unit. The optical touch display device has a thin thickness. | 11-24-2011 |
| 20110279449 | METHOD FOR CALCULATING OCULAR DISTANCE - A method for calculating an ocular distance is presented. The method includes the following steps. A three-dimensional (3D) image display device generates one or more second display points and displays one or more virtual reference points. One or more calibration points are obtained, and these calibration points are generated through interaction by a user using an interaction component with the reference points. An ocular distance of the user is calculated according to a relative position between the display points, the calibration points, and the user. | 11-17-2011 |
| 20110279413 | OPTICAL 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 |
| 20110279369 | HYBRID POINTING DEVICE - The present invention discloses a hybrid pointing 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. 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 pointing 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. | 11-17-2011 |
| 20110261231 | DISPLACEMENT DETECTION DEVICE AND DISPLACEMENT DETECTION METHOD THEREOF - A displacement detection method includes the steps of: acquiring an image frame; calculating a characteristic index of the image frame; maintaining the image frame when the characteristic index is larger than a threshold value; and adding a fixed pattern to the image frame when the characteristic index is smaller than the threshold value. The present invention further provides a displacement detection device. | 10-27-2011 |
| 20110261018 | OPTICAL 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 |
| 20110261015 | OPTICAL 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 |
| 20110234538 | OPTICAL 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 |
| 20110219166 | USB CONTROLLER AND EXECUTION METHOD THEREOF - A universal serial bus (USB) controller and an execution method thereof are presented. The USB controller stores settings of different sensors in an external memory, or stores modified program codes when an originally stored program has bugs. With the execution of the set configurations, the program section to be execute is dynamically loaded into the random access memory (RAM) of the USB controller, so as to reduce the size of the RAM, thereby providing a large program modification space and avoiding the entire chip (the USB controller) from being stretched by an excessive large RAM. | 09-08-2011 |
| 20110200066 | CHIP MODULE PACKAGE STRUCTURE - A chip module package structure applied to an optical input device includes a cover body, a first chip module, and a second chip module. The first chip module and the second chip module are respectively combined with the cover body, the first chip module has an optical source, and the second chip module has an optical sensor. Further, the optical source and the optical sensor form a preset relative spatial position relation, such that a part of light emitted by the optical source is received by the optical sensor after at least one reflection. | 08-18-2011 |
| 20110199336 | OPTICAL 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 |
| 20110194786 | DATA CONVERSION METHOD AND DATA CONVERSION DEVICE - A data conversion method and a data conversion device convert a large cubic three-dimensional image data to a plurality of pieces of small cubic one-dimensional image data, or convert a plurality of pieces of small cubic one-dimensional image data to a large cubic three-dimensional image data. The data conversion method includes the following steps, marking a three-dimensional index on three-dimensional image data; converting the three-dimensional index to a writing sequence index; inputting the three-dimensional image data to a buffer memory in sequence according to the writing sequence index; computing a reading sequence index according to the writing sequence index; outputting data blocks from the buffer memory in sequence according to the reading sequence index. Through the method and the device, use of the memory is reduced, and time for conversion is lowered. | 08-11-2011 |
| 20110181511 | METHOD FOR ADJUSTING EXPOSURE CONDITION OF OPTICAL SENSOR MODULE AND OPTICAL SENSOR MODULE THEREOF - A method for adjusting an exposure condition of an optical sensor module includes the following steps, (A) receiving reflected light reflected by a working surface; (B) generating an image signal by exposing the optical sensor module to the reflected light, in which the image signal includes a plurality of luminance signals and an image quality signal; (C) setting an exposure condition of the optical sensor module according to part of the luminance signals; (D) repeating Step (B) and Step (C) under different exposure conditions so that the optical sensor module generates a plurality of image quality signals; and (E) setting an optimal exposure condition corresponding to the working surface according to the image quality signals under the different exposure conditions. The optical sensor module is applicable to a pointing device. | 07-28-2011 |
| 20110181508 | IMAGE PROCESSING METHOD AND IMAGE PROCESSING MODULE - An image processing method is applicable to a pointing device. The pointing device generates a displacement signal by moving relative to a working surface and detecting an image of a part of the working surface. The method includes the following steps. A first original image is obtained. The first original image is uniformly divided into a plurality of blocks. A block brightness value of each block is adjusted. A complexity signal representing a plurality of gradient values of each block is generated. The blocks are sequentially adjusted according to the adjusted block brightness value and complexity signal, so as to generate a first adjusted image corresponding to the first original image. | 07-28-2011 |
| 20110176733 | IMAGE RECOGNITION METHOD - The present invention provides an image recognition method for recognizing a plurality of objects in an image, wherein each object is composed of a plurality of image segments. The image recognition method includes the steps of: sequentially acquiring every pixel of the image; identifying a start point of a newly detected image segment; recording information of the newly detected image segment pixel-by-pixel from the start point; identifying an end point of the newly detected image segment; recognizing an object to which the newly detected image segment belongs according to the start point and the end point of the newly detected image segment; and identifying an invalid object or a merged object thereby releasing the data space thereof. | 07-21-2011 |
| 20110170743 | METHOD FOR DETECTING OBJECT MOVEMENT AND DETECTION SYSTEM - This invention relates to a method for detecting object movement by dynamically updating a reference image data. By dynamically updating the reference image data, the impact of the ambient light change can be reduced and the detection error of object movement caused by using fixed reference image data under varying ambient light can also be avoided. The present invention further provides a detection system. | 07-14-2011 |
| 20110168877 | MOVEMENT DETECTION DEVICE - The present invention relates to a movement detection device for detecting a movement of an object in a space range. The movement detection device includes a light source, a light guiding element, at least two light sensing elements and a processing unit. The light sensing elements have an offset therebetween along a first direction such that the object, when moving in the space range, reflects the light from the light source sequentially to the light sensing elements through the light guiding element. The processing unit identifies the movement of the object along the first direction according to a sequence that the light sensing elements detect the light reflected by the object. | 07-14-2011 |
| 20110151927 | PORTABLE ELECTRONIC DEVICE, SERIAL TRANSMISSION INTERFACE OF PORTABLE ELECTRONIC DEVICE AND DATA TRANSMISSION METHOD THEREOF - The present invention provides a serial transmission interface of a portable electronic device. The portable electronic device includes a control module, a display module and an image sensing module. The serial transmission interface includes a first line group coupled to between the control module and the image sensing module, and includes a second line group coupled to between the control module, the display module and the image sensing module; wherein when the control module sets the image sensing module to a master mode through the first line group, the image sensing module directly transmits captured image data to the display module through the second line group. The present invention further provides a portable electronic device and a data transmission method of the serial transmission interface of a portable electronic device. | 06-23-2011 |
| 20110150363 | DISPLACEMENT DETECTION APPARATUS AND METHOD - A displacement detection method includes the steps of: capturing a first frame and a second frame; selecting a first block with a predetermined size in the first frame and selecting a second block with the predetermined size in the second frame; determining a displacement according to the first block and the second block; comparing the displacement with at least one threshold; and adjusting the predetermined size according to a comparison result of comparing the displacement and the threshold. The present invention further provides a displacement detection apparatus. | 06-23-2011 |
| 20110115568 | FREQUENCY CALIBRATION DEVICE AND METHOD FOR PROGRAMMABLE OSCILLATOR - A frequency calibration method for a programmable oscillator includes the steps of: counting an oversampling number of an oversampling signal and estimating an accumulated bit number of a USB data stream according to the oversampling signal; calculating a difference between the oversampling number and M times of the accumulated bit number when the accumulated bit number is larger than or equal to a predetermined value; and determining a frequency calibration step of the oversampling signal according to the difference. The present invention further provides a frequency calibration device for a programmable oscillator. | 05-19-2011 |
| 20110102319 | HYBRID POINTING DEVICE - The present invention discloses a hybrid pointing 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. 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 pointing 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. | 05-05-2011 |
| 20110098088 | MULTIMEDIA DATA COMMUNICATION METHOD AND SYSTEM - A multimedia processing system is provided for communicating among a baseband module, an image sensor module, and at least one display module in a mobile phone. The system comprises: a serial baseband interface that transmits and receives processing data from the baseband module; an image sensor interface that transmits and receives image data from the image sensor module; a display interface that transmits and receives display data from the display module, wherein the display interface comprises a display write enable output, a display read enable output, and a display transceiver means to transmit and receive the display data; and at least one register that includes a clock phase control bit, a clock polarity control bit for assisting the serial baseband interface to accommodate different interface standards, and a burst read mode control bit for bursting the serial baseband interface to read sequential processing data from a multimedia module or from the baseband module. | 04-28-2011 |
| 20110095983 | OPTICAL INPUT DEVICE AND IMAGE SYSTEM - An optical input device includes at least two bodies for being moved on a surface, and a processing unit for obtaining a relative motion between the bodies and for updating the picture shown by the image display according to the relative motion. The present invention further provides an image system. | 04-28-2011 |
| 20110080371 | RESISTIVE TOUCH CONTROLLING SYSTEM AND SENSING METHOD - A resistive touch controlling system includes a first sensing module, a second sensing module and a processing circuit. The first sensing module includes a plurality of sensing line groups. The processing circuit is electrically coupled to the first sensing module and the second sensing modules. When the first sensing module senses at least two touch points, the processing circuit takes a combination of touch points sensed by the first and second sensing modules as a first candidate list. After that, the processing circuit turns off some of the sensing line groups of the first sensing module sensing one of the sensed touch points, and takes a touch point(s) sensed by the first sensing module and the second sensing module as the second candidate list. Finally, the processing circuit compares the first candidate list with the second candidate list to determine a current touch sensing result. | 04-07-2011 |
| 20110080363 | TOUCH-CONTROL SYSTEM AND TOUCH-SENSING METHOD THEREOF - An exemplary touch-control system and an exemplary touch-sensing method thereof are provided. The touch-control system comprises a touch-control panel, at least an image sensing apparatus and a processing circuit. The touch-control panel has a touch surface and adopts a touch-sensing structure. The touch-sensing structure comprises at least a plurality of conducting wires paralleled to each other. The image sensing apparatus is used for sensing an image of the touch surface. When two pointers touch the touch surface, the processing circuit acquires the information related to the positions of the pointers in the touch surface by the conducting wires and the processing circuit, so as to acquire the actual touch positions of the pointers according to the sensing results of the two sensing manners. | 04-07-2011 |
| 20110069904 | IMAGE DENOISING METHOD - An image denoising method according to the present invention includes the steps of: sequentially selecting a pixel in an image as a current pixel; dynamically determining a current search block and a strength parameter; transferring the comparison block of each pixel in the current search block to a frequency domain; determining a current frequency basis; obtaining a similarity between each neighborhood pixel and the current pixel in the current search block according to the current frequency basis; determining a weighting of each neighborhood pixel related to the current pixel according to the strength parameter, and a distance and the current pixel in the current search block; and weighted averaging each neighborhood pixel and the current pixel in the current search block according to the weighting so as to obtain a reconstruction value of the current pixel. | 03-24-2011 |
| 20110069902 | IMAGE DENOISING METHOD - An image denoising method includes the steps of: sequentially selecting a pixel in an image as a current pixel; dynamically determining a current search block and a strength parameter; pre-denoising the comparison block of each pixel in the current search block; comparing the comparison block of the pre-denoised neighborhood pixel and the comparison block of the pre-denoised current pixel to obtain a similarity between each neighborhood pixel and the current pixel in the current search block; determining a weighting of each neighborhood pixel related to the current pixel according to the strength parameter, and a distance and the similarity between each neighborhood pixel and the current pixel in the current search block; and weighted averaging each neighborhood pixel and the current pixel in the current search block according to the weighting to obtain a reconstruction value of the current pixel. | 03-24-2011 |
| 20110052007 | GESTURE RECOGNITION METHOD AND INTERACTIVE SYSTEM USING THE SAME - A gesture recognition method for an interactive system includes the steps of: capturing image windows with an image sensor; obtaining information of object images associated with at least one pointer in the image windows; calculating a position coordinate of the pointer relative to the interactive system according to the position of the object images in the image windows when a single pointer is identified according to the information of object images; and performing gesture recognition according to a relation between the object images in the image window when a plurality of pointers are identified according to the information of object images. The present invention further provides an interactive system. | 03-03-2011 |
| 20110050644 | TOUCH 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 |
| 20110037132 | MEMS PACKAGE STRUCTURE AND METHOD FOR FABRICATING THE SAME - A method for fabricating MEMS package structure includes the following steps. Firstly, a substrate is provided. Next, a plurality of lower metallic layers and first oxide layers are formed to compose a MEMS structure and an interconnecting structure. Next, an upper metallic layer is formed on the MEMS structure and the interconnecting structure. The upper metallic layer has a first opening and a second opening. Next, the first opening and the second opening are employed as etching channels to remove a portion of the first oxide layers so as to form a first cavity surrounding the MEMS structure and form a second cavity above the interconnecting structure. The first cavity communicates with the second cavity. Next, the second opening is sealed in a vacuum environment. Next, a packaging element is formed on the upper metallic layer in a non-vacuum environment to seal the first opening. | 02-17-2011 |
| 20110032230 | CONTROL DEVICE AND CONTROL METHOD FOR IMAGE DISPLAY - A control device for an image display includes at least two reference points, a modulation unit and a remote controller. The modulation unit modulates the light of a predetermined spectrum generated by the reference points with a brightness variation cycle. The modulation unit controls the reference points to emit the light with a first brightness within a first period of the brightness variation cycle and to emit the light with a second brightness within a second period of the brightness variation cycle, wherein the first brightness and the second brightness are not zero gray level. The remote controller captures the light of the predetermined spectrum with a sampling cycle and demodulates an image variation of the reference points with respect to the remote controller. The present invention further provides a control method for an image display. | 02-10-2011 |
| 20110018822 | GESTURE RECOGNITION METHOD AND TOUCH SYSTEM INCORPORATING THE SAME - A gesture recognition method for a touch system includes the steps of: capturing images looking across a plate surface with at least one image sensor; processing the images to determine a contact state variation of a single pointer on the plate surface; and recognizing whether a relative variation between the single pointer and the plate surface matches a predetermined gesture when the contact state variation is larger than a threshold. The present invention further provides a touch system. | 01-27-2011 |
| 20100329518 | DYNAMIC IMAGE COMPRESSION METHOD FOR HUMAN FACE DETECTION - A dynamic image compression method for human face detection includes the following steps. An original image is acquired. The image is divided into a plurality of blocks. A first brightness and a plurality of gradient values of each block are calculated. A second brightness of each block is calculated according to a brightness transformation function and the first brightness. A reconstruction image is generated according to the second brightness and the plurality of gradient values of each block. Human face detection is performed according to the reconstruction image. Therefore, gradient values within an original square are. When the human face detection process is performed through gradient direction information, a success rate of detection is greatly increased. | 12-30-2010 |
| 20100328498 | SHOOTING PARAMETER ADJUSTMENT METHOD FOR FACE DETECTION AND IMAGE CAPTURING DEVICE FOR FACE DETECTION - A shooting parameter adjustment method for face detection includes (A) acquiring an image; (B) dividing the image into a plurality of blocks, and calculating a brightness value of each of the blocks; (C) selecting at least one of the plurality of blocks, and adjusting a shooting parameter according to the brightness value of the selected block; and (D) acquiring another image according to the shooting parameter, and performing a face detection procedure with the another image. The shooting parameter adjustment method can automatically adjust a shooting parameter of an image capturing device according to brightness of different blocks in an image. Therefore, by using this method, the brightness of a face, no matter being too high or too low, can be adjusted to a value suitable for face detection, so as to improve the accuracy of the face detection procedure. | 12-30-2010 |
| 20100328442 | HUMAN FACE DETECTION AND TRACKING DEVICE - A human face detection device includes a photosensitive element, a human face detection unit, and a skin color threshold generation unit. The photosensitive element is used for capturing a first image containing a first human face block. The human face detection unit compares the first image with at least one human face feature, so as to detect the first human face block. The skin color threshold generation unit is used for updating a skin color threshold value according to the detected first human face block. The skin color threshold value is used for filtering the first image signal to obtain a candidate region, the human face detection unit compares the candidate region with the at least one human face feature to obtain the first human face block, and the skin color threshold value determines whether the first human face block detected by the human face detection unit is correct. | 12-30-2010 |
| 20100295785 | INTERACTIVE SYSTEM AND OPERATING METHOD THEREOF - An integrative image system includes an image display, a first input device, a second input device and a host. When at least one key of the first input device is pressed, the first input device sends a control signal to the host to enable the host to compare a characteristic parameter detected by the second input device with a plurality of predetermined rules and to control the image display to execute a corresponding function according to the predetermined rule that the characteristic parameter matches. The present invention further provides an operating method of an interactive image system. | 11-25-2010 |
| 20100295457 | LIGHT CONTROL SYSTEM AND CONTROL METHOD THEREOF - A light control system includes at least one illumination module and a remote controller. Each illumination module includes an identification signal generator, at least one light source, a receiving unit and a control circuit. When the receiving unit receives a first wireless control signal, the control circuit controls the identification signal generator to emit an identification signal; when the receiving unit receives a second wireless control signal, the control circuit controls the ON/OFF of the light source. The remote controller sends the first and second wireless control signals to the illumination module, acquires the identification signal emitted from the identification signal generator to generate a plurality of images, and identifies the illumination module according to the images. The present invention further provides a control method of a light control system. | 11-25-2010 |
| 20100283877 | IMAGE SENSING DEVICE AND IMAGE SENSING METHOD - An image sensing device and image sensing method is described, in which an interrupt circuit is disposed to interrupt a clock signal input to a logic circuit not associated with the reading of image data when the image data is read, so as to temporarily interrupt the operation of the logic circuit, thereby reducing the power noises caused by the current generated during the operation of the logic circuit. | 11-11-2010 |
| 20100265180 | MOUSE WHEEL ASSEMBLY - A mouse wheel assembly is provided according to the present invention. The mouse wheel assembly includes a member and an optical module. The member has a pattern formed thereon. The optical module is adapted to illuminate the pattern on the member, capture an image of the pattern as a result of the illumination and recognize a feature change of the image of the pattern to obtain the change direction and change speed of the member. | 10-21-2010 |
| 20100253649 | OPTICAL 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 |
| 20100231420 | ENCODING AND DECODING METHOD FOR MICRODOT MATRIX - An encoding and decoding method for a microdot matrix includes the steps of: forming a plurality of microdots by encoding based on Reflected Gray Codes in a data region included in each of a plurality of microdot blocks included in a microdot matrix, wherein the microdots corresponding to lower order bits of the Reflected Gray Codes are formed as the outmost microdots in the data region; scanning the microdot matrix to fetch an image and recognizing a microdot group in the date region of each microdot block in the image; and decoding a corresponded coordinate of the image on the microdot matrix according to the microdot block to which the microdot group containing lower order bits of the Reflected Gray Codes belongs. | 09-16-2010 |
| 20100214269 | OPTICAL 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 |
| 20100207885 | OPTICAL INPUT DEVICE AND OPERATING METHOD THEREOF, AND IMAGE SYSTEM - An optical input device includes a first body, a second body and a processing unit. The first body is moved on a surface. The second body performs relative motion with respect to the first body. The processing unit obtains a displacement of the first body on the surface and a relative variation between the second body and the first body, controls at least one cursor according to the displacement, and controls the update of an image display according to the relative variation. The present invention further provides an operating method of an optical input device and an image system. | 08-19-2010 |
| 20100181578 | PACKAGE STRUCTURE - A package structure is described. A light emitting element and a light sensing element are disposed on a substrate, and are both wrapped by a package layer. Meanwhile, the light emitting element and the light sensing element are separated by a trench of the package layer, such that lights generated by the light emitting element are blocked, thereby reducing the noise interference on the light sensing element and improving the sensing precision of the light sensing element. | 07-22-2010 |
| 20100103191 | LOCUS SMOOTHING METHOD AND NAVIGATION DEVICE USING THE SAME - A locus smoothing method processes a current estimated displacement according to a predetermined number of previous output smoothed displacements. The locus smoothing method includes the steps of: accumulating a predetermined number of previous output smoothed displacements to produce an accumulated displacement and recording a last output smoothed displacement; estimating a current estimated displacement; forming a digital filter according to the accumulated displacement, the last output smoothed displacement and the current estimated displacement; processing the current estimated displacement with the digital filter to produce a current smoothed displacement; and transmitting the current smoothed displacement to an image display. The present invention further provides a navigation device having smooth locus. | 04-29-2010 |
| 20100103107 | IMAGE PROCESSING METHOD OF OPTICAL NAVIGATOR AND OPTICAL NAVIGATOR USING THE SAME - An image processing method of a optical navigator includes the steps of: capturing a first image and calculating an average brightness of the first image; determining whether the average brightness is between a first threshold value and a second threshold value; when the average brightness is between the first and second threshold values, determining whether the first image is attenuated by an attenuation value; when the first image is not attenuated by the attenuation value, updating the attenuation value and a gain; attenuating the first image with the updated attenuation value and amplifying the attenuated first image with the gain; and comparing the attenuated and amplified first image with a reference image to obtain a displacement. The present invention further provides an optical navigator. | 04-29-2010 |
| 20100100255 | CONTROL DEVICE AND CONTROL METHOD OF TEMPERATURE CONTROLLER - A control device of a temperature controller, for adjusting the temperature of an environment having at least one active object, includes a first image sensor, a second image sensor, a process unit and a control unit. The first image sensor is for capturing a first image containing the image of the active object. The second image sensor is for capturing a second image containing the image of the active object. The process unit calculates a distance between the active object and the temperature controller according to the first and second images. The control unit controls an operational status of the temperature controller according to the distance calculated by the process unit. The present invention further provides a control method of a temperature controller | 04-22-2010 |
| 20100020201 | SENSOR ARRAY MODULE WITH WIDE ANGLE, AND IMAGE CALIBRATION METHOD, OPERATION METHOD AND APPLICATION FOR THE SAME - A sensor array module with wide angle for creating a composite image includes a first image sensor, a second image sensor, a storage unit and a processor. The first image sensor is for capturing a first image. The second image sensor is for capturing a second image and has a relative spatial relationship with respective to the first image sensor. The storage unit stores at least one transformation matrix obtained according to the relative spatial relationship between the first and the second image sensors. The processor combines the first image and the second image by using the transformation matrix to create the composite image. The present invention also provides an image calibration method, an operation method and an application for a sensor array module with wide angle. | 01-28-2010 |
| 20090284298 | METHOD FOR AUTOMATICALLY ADJUSTING CLOCK FREQUENCY AND CLOCK FREQUENCY ADJUSTING CIRCUIT - A method for automatically adjusting the clock frequency for a USB interface including the steps of: generating a clock signal with an adjustable frequency; receiving a USB differential signal; counting the clock signal based on each frame time of the USB differential signal and obtaining a count value; and adjusting the frequency of the clock signal when the count value exceeds a predetermined count range. The present invention further provides a clock frequency adjusting circuit. | 11-19-2009 |
| 20090195505 | MOTION ESTIMATION DEVICE AND POWER SAVING METHOD THEREOF - A power saving method for a motion estimation device which has a fixed sampling period and includes a light source illuminating with an adjustable emitting cycle to provide the needed light for the motion estimation device during capturing images. The power saving method includes: capturing a first image at a first time; capturing a second image at a second time, wherein a time interval between the first time and the second time is identical to one emitting cycle which is an integral multiple of the sampling period; comparing the first image and the second image to obtain a displacement; comparing the displacement with at least one threshold value; and adjusting the emitting cycle of the light source according to a comparison result of comparing the displacement and the threshold value. The present invention further provides a motion estimation device. | 08-06-2009 |
| 20090161026 | REMOTE CONTROLLER - A remote controller for controlling a display device includes a first image sensor, a processing unit and an activation mechanism. The first image sensor is for sensing an object and forming a digital image. The processing unit is coupled to the first image sensor for calculating image variations of the object on the digital image, correspondingly controlling the display device according to the image variations and deactivating the first image sensor after the remote controller is idle for a predetermined period of time. The activation mechanism is coupled to the first image sensor for re-activating the deactivated first image sensor. | 06-25-2009 |
| 20090160774 | DISPLACEMENT DETECTION APPARATUS AND METHOD - A displacement detection method includes the steps of: capturing a first image and a second image, and obtaining a displacement variation according to the first and the second images; comparing the displacement variation with at least one threshold value; and adaptively adjusting a displacement sensitivity outputted from a displacement detection apparatus according a comparison result of comparing the displacement variation with the threshold value. The present invention further provides a displacement detection apparatus. | 06-25-2009 |
| 20090109440 | Optical Sensor and Operating Method Thereof - The present invention discloses an optical sensor. The optical sensor comprises a sensor for sensing a reflected light, an image capture device coupling with the sensor for reading the reflected light and calculating an average light intensity of the reflected light, a controller coupling with the image capture device for outputting a control signal based on the average light intensity, a driver coupling with the controller for receiving the control signal to output a drive current based on the control signal, and a light source coupling with the driver for receiving the drive current to generate a light. | 04-30-2009 |
| 20090101622 | METHOD FOR FABRICATING VARIABLE PARALLEL PLATE CAPACITORS - A method for fabricating micromachined structures is provided. A structure including a dielectric layer, a metal layer and a passivation layer is formed, wherein the dielectric layer has a via thereon. An etching window is formed on the passivation layer. An etching solution is poured into the via through the etching window to perform a process of etching. After etching, the etching solution is removed and the passivation layer is removed. Finally, the structure is etched again to form the micromachined structure. | 04-23-2009 |
| 20090090693 | METHOD FOR FABRICATING MICROMACHINED STRUCTURES - A method for fabricating micromachined structures is provided. At least one cavity is formed on a substrate and then a dielectric material different from the material of the substrate is filled in the at least one cavity. Next, a circuitry layer including a first etch-resistant layer and a dielectric layer is formed above the at least one cavity filled with the dielectric material. A portion of the circuitry layer exposed by the first etch-resistant layer is then etched. Finally, the dielectric material in the at least one cavity is etched out. | 04-09-2009 |
| 20090090184 | OUT-OF-PLANE SENSING DEVICE - An out-of-plane sensing device is provided. A proof mass is movable with respect to a substrate. A frame is positioned on the substrate and encloses the proof mass. At least one spring connects the proof mass to the frame so that the spring will exert a force on the proof mass to make the proof mass move back to its equilibrium position when the proof mass moves perpendicularly to the substrate. An electrode extends from the proof mass toward the frame. A counter electrode extends from the frame toward the proof mass, wherein the projection of the electrode onto the substrate overlaps with that of the counter electrode onto the substrate. | 04-09-2009 |
| 20090064784 | MICROMACHINED SENSORS - The present invention provides a micromachined sensor. The micromachined sensor includes a proof mass movable with respect to a substrate. The proof mass includes a first portion, a second portion separated from the first portion and a third portion connecting the first portion to the second portion. A frame is positioned on the substrate and encloses the proof mass. A plurality of springs connects the proof mass to the frame. A plurality of first and second electrodes extends from the frame. A plurality of third electrodes extends from the first portion of the proof mass and is interleaved with the first electrodes. A plurality of fourth electrodes extends from the second portion of the proof mass and is interleaved with the second electrodes. A first support beam extends from the frame to the area between the first and second portions of the proof mass. A plurality of seventh and eighth electrodes extends from the first support beam. A plurality of fifth electrodes extends from the first portion of the proof mass and is interleaved with the seventh electrodes. A plurality of sixth electrodes extends from the second portion of the proof mass and is interleaved with the eighth electrodes | 03-12-2009 |
| 20090052730 | INTERACTIVE IMAGE SYSTEM, INTERACTIVE APPARATUS AND OPERATING METHOD THEREOF - An interactive image system includes a host having a first wireless module and an access device for accessing software, at least one reference point for generating light of a predetermined spectrum and an interactive apparatus including a second wireless module, an image module, a modulation module and a processing unit. The image module captures images of the reference point with a sampling frequency to form a first image and a second image, calculates and outputs a moving vector of the images of the reference point between the first and second images. The processing unit controls the second wireless module to transmit the moving vector to the first wireless module and controls the modulation module to real-timely modulate the sampling frequency of the image module according to a predetermined condition. The present invention further provides an interactive apparatus and operating method thereof. | 02-26-2009 |
| 20090016646 | METHOD AND APPARATUS FOR DETECTING DISPLACEMENT WITH SUB-PIXEL ACCURACY - A method for detecting displacement with sub-pixel accuracy includes the steps of: capturing a first array image and a second array image; interpolating the first array image to form a reference image; interpolating the second array image to form a comparison image; comparing the reference image with the comparison image so as to obtain a displacement. The present invention also provides an apparatus for detecting displacement with sub-pixel accuracy. | 01-15-2009 |
| 20080266251 | CURSOR CONTROL DEVICE AND METHOD FOR AN IMAGE DISPLAY, AND IMAGE SYSTEM - A cursor control device for an image display includes a first sensing unit, a second sensing unit and a switching device. The first sensing unit is for detecting a first displacement of the cursor control device with respect to a surface and calculating a first coordinate variation of a cursor on the image display according to the first displacement. The second sensing unit is for sensing an object, detecting a second displacement of the cursor control device with respect to the object and calculating a second coordinate variation of the cursor on the image display according to the second displacement. The switching device switches output between the first coordinate variation and the second coordinate variation. The present invention further provides an image system and a cursor control method for an image display. | 10-30-2008 |
