Patent application number | Description | Published |
20090066662 | Method and system for distinguishing multiple touch points - The invention provides a system for distinguishing multiple touch points. The system comprises a panel, a first image capturing unit, a second image capturing unit, at least one third image capturing unit, and a processing unit. N touch points are indicated on the panel. A first image and a second image related to the N touch points are captured by the first image capturing unit and the second image capturing unit. At least one third image related to the N touch points is captured by the at least one third image capturing unit. N sets of coordinates corresponding to the N touch points are calculated by the processing unit according to the first image and the second image. And, a set of real coordinates corresponding to the N touch points is determined from the N sets of coordinates according to the at least one third image. | 03-12-2009 |
20100149658 | Lens module - A lens module is provided. The lens module comprises at least one square-shaped lens, a square-shaped filter, a circuit module and a plate base. The square-shaped lens comprises a light-transmitting part and two wings formed on two sides of the light-transmitting part. The circuit module comprises a light sensor. The first surface of the plate base comprises a plurality of slots, wherein the square-shaped lens, the square-shaped filter and the circuit module can be adapted to the slots respectively. A sidewall of the plate base further comprises an incident hole to make an incident light pass vertically through the square-shaped lens and the square-shaped filter and further sensed by the light sensor to generate an image signal to the circuit module. | 06-17-2010 |
20110102375 | OPTICAL 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 |
Patent application number | Description | Published |
20090195500 | System and method for determining coordinates - A coordinate determining system is disclosed. The coordinate determining system comprises an image capturing module, a dividing module, a determining module, and a converting module. The image capturing module is used for capturing a plurality of images corresponding to the screen. The dividing module is used for dividing an overlapping image region of the images into a target image comprising a plurality of sub-regions. The determining module is used for determining a position of the indicating point on the target image. If the indicating point is in a target sub-region among the sub-regions and has an image coordinate relative to an original of the target sub-region, the converting module will convert the image coordinate into the screen coordinate according to a proportional parameter. | 08-06-2009 |
20090274373 | Image processing apparatus and method for generating coordination calibration points - The invention provides an image processing apparatus for generating coordination calibration points. The image processing apparatus includes a subtracting module, an edge detection module and an intersection point generation module. The subtracting module subtracts a first image from a second image to generate a first subtracted image, and subtracts the first image from a third image to generate a second subtracted image. The edge detection module performs an edge detection process for the first subtracted image to generate a first edge image, and performs the edge detection process for the second subtracted image to generate a second edge image, wherein the first edge image includes a first edge and the second edge image includes a second edge. The intersection point generation module generates, according to the first and second edges, an intersection point pixel, serving as the coordination calibration point corresponding to the first edge and the second edge. | 11-05-2009 |
20100079412 | Calibrating 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 |
20100177062 | Light 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 |
20100201639 | Optical Touch Display Device and Method Thereof - The invention provides an optical touch display device. The optical touch display device comprises a display module, a first image capturing module, a second image capturing module and a processing module. The display module generates N touch points according to a touch gesture, the touch gesture has a specific moving model, and N is a positive integer. The first image capturing module retrieves a first image relating to N touch points. The second image capturing module retrieves a second image relating to N touch points. The processing module determines correspondingly a specific touch chord of N touch points according to the first image and the second image, and determines correspondingly a specific function of the touch gesture according to the specific touch chord and the specific moving mode. | 08-12-2010 |
Patent application number | Description | Published |
20130241882 | OPTICAL TOUCH SYSTEM AND OPTICAL TOUCH POSITION DETECTING METHOD - The invention provides an optical touch system for detecting a position of a touch object on a touch area, including an active light source for lightening the touch area, a camera having two lenses and an image sensor to capture two images of the touch object on the image sensor through the two lens, and a processor for calculating the position of the touch object according to the two images of the touch object on the image sensor. | 09-19-2013 |
20130241883 | OPTICAL TOUCH SYSTEM AND OPTICAL TOUCH-POSITION DETECTION METHOD - The invention provides an optical touch system, including a camera having a lens and an image sensor to capture an image of a touch object on the image sensor through the lens, an active light source for lighting the touch object, and a processor for determining the distance between the touch object and the camera according to the size of the image or the brightness of the image on the image sensor, determining the direction of the touch object according to the position of the image on the image sensor, and calculating the position of the touch object | 09-19-2013 |
20130249865 | OPTICAL TOUCH CONTROL SYSTEMS - An optical touch control system is disclosed. A reflector surrounds a monitor. At least one image detection module is adjacent to the monitor and includes an image sensor, a reflective mirror, and a light source. The image sensor is electrically connected to an image processor. The reflective mirror is disposed on the image sensor and inclines to the image sensor by a predetermined angle. The light source outputs light onto the monitor. The reflective mirror reflects the light reflected by the reflector to the image sensor, identifying a touch control operation. | 09-26-2013 |
20140062890 | KEYBOARD DEVICE AND ELECTRONIC DEVICE - A keyboard device includes an operation surface. One long side of the operation surface is referred to as a proximal side, which nears a user operating the keyboard device; and the other long side is referred to as a distal side. A key unit is positioned on the proximal side, wherein the key unit includes a plurality of keys. A camera module is positioned on the distal side. An angle between a border of a field of view of the light sensor and the operation surface is set at a particular angle thus user's hand lays outside the field of view of the light sensor when the user is manipulating the key unit. | 03-06-2014 |
20140078060 | INPUT DEVICE AND ELECTRONIC DEVICE - An input device is equipped with a cursor pointing unit including a mechanical control stick and an optical sensor. The optical sensor is mounted on the mechanical control stick and has a contact surface for sensing object motion thereon. A cursor signal is generated when the mechanical control stick is inclined by an exerted pressure. When the mechanical control stick is not inclined, a position frame of the object on the contact surface is retrieved as a reference frame. A real-time position frame of the object is retrieved when the object remains on the contact surface. A speed of the object is calculated according to the reference frame and the real-time position frame. When the speed does not exceed a threshold, a cursor position move is generated according to the speed; and when the speed exceeds the threshold, a switch signal is generated to initiate a gesture controlling mode. | 03-20-2014 |
20140152569 | INPUT DEVICE AND ELECTRONIC DEVICE - An input device applied on an electronic device including a keyboard, an image-detection module, and a processing device. There is a selection-operating area, a gesture-operating area, and a key-in area above the keyboard. The image-detection module is embedded in the keyboard for detecting the location of the user's hand. The processing device informs the electronic device to operate in either the selection-operating mode, the gesture-operating mode, or the key-in mode, according to the location of the hand as detected by the image detector. | 06-05-2014 |
Patent application number | Description | Published |
20150035799 | OPTICAL TOUCHSCREEN - An optical touchscreen includes a transparent panel, a plurality of optical modules, and at least one retro-reflector. The transparent panel includes a first surface and a second surface opposite to each other, a plurality of corners, and a plurality of edges. The optical modules are respectively disposed on the corners, and each optical module includes an incident-light unit and a sensor. The incident-light unit is used for emitting an incident light, so that the incident light enters and passes through the transparent panel via total reflection between the first surface and the second surface. The sensor is disposed on one side of the incident-light unit. The retro-reflector is disposed on the edges, and the retro-reflector is used to reflect the incident light, so that the incident light is reflected by the retro-reflector, and the reflected incident light goes in a reversed path within the transparent panel and is captured by the sensor. | 02-05-2015 |
20150048236 | OUTER-HANGING TOUCH APPARATUS - An outer-hanging touch apparatus is hanged on a display apparatus. The display apparatus has a front surface, a top surface, and a rear surface. The outer-hanging touch apparatus includes a touch module and a hanging assembly. The hanging assembly includes a hanging member, an adjusting member, and a driving member. The hanging member is fixed to the touch module and extends to the rear surface. The hanging member includes a guiding structure. The adjusting member is slidably engaged with the guiding structure. The adjusting member abuts against a junction between the top and rear surfaces. The driving member is engaged with the hanging member and the adjusting member for moving the adjusting member relative to the hanging member. When the adjusting member moves toward or away from the touch module along the guiding structure, the hanging member correspondingly moves away from or toward the top surface. | 02-19-2015 |