Wistron Corporation

Wei-Kuo Kan

Yu-Yen Chen

Po-Liang Huang

Kuo-Ting Huang

Yen-Ting Lin

Kuo-Hsien Lu

Ching-An Cho

Bo-Yi Wu

Shang-Chin Su

Chia-Ta Hsieh

Chih-Hao Chiu

You-Jyun Syu

Chan-Hsuan Yu

An optical touch apparatus configured to sense a touch operation of a touch object is provided. The optical touch apparatus includes a touch operation surface, a plurality of optical sensors and a touch controller. The touch operation surface includes a plurality of reference points. The touch object performs the touch operation on the touch operation surface. The optical sensors are disposed on a side of the touch operation surface and configured to obtain a plurality of images from different angles. The touch controller is electrically connected to the optical sensors and configured to determine a plurality of orientation points according to the images obtained by the optical sensors. The touch controller compares the orientation points to the reference points and determines a touch position of the touch object on the touch operation surface according to a comparison result. Furthermore, a method for determining a touch position is also provided.

Optical touch apparatus and a method for determining a touch position

A touch apparatus and a correction method thereof are provided. Whether to divide a correction block is determined by calculating distortion error quantity of the correction block, so as to make the distortion error quantity of each divided correction block is less than or equal to a preset threshold. A correction parameter set of each correction block is obtained. Accordingly, in an operation procedure, correction for a touch behavior of a user is executed based on the correction parameter set.

Touch apparatus and correction method thereof

An optical touch device and a sensing method thereof are provided. The optical touch device includes a plurality of optical sensors and a processing unit. The optical sensors are arranged around a touch plane and are spaced from each other. The two adjacent optical sensors located at one side of the touch plane are defined as one set of an optical sensing module, such that the optical sensors are paired to form multiple sets of the optical sensing modules. The processing unit generates a plurality of touch coordinates data corresponding to the plurality sets of the optical sensing modules according to the optical touch data, and determines whether the touch coordinates data corresponding to each set of the optical sensing modules is in at least one touch-excluded area corresponding to each set of the optical sensing modules, and respectively excludes the touch coordinates data in the touch-excluded area.

Optical touch device and sensing method thereof

A calibration method suitable for calibrating a light transceiver module includes: disposing a plurality of reflective regions, a plurality of light-absorbing regions and a feature region beside the light transceiver module; making the light transceiver module emit light toward the reflective regions, the light-absorbing regions and the feature region and sensing the images of the reflective regions, the light-absorbing regions and the feature region; comparing the actual orientations of the reflective regions, the light-absorbing regions and the feature region with the positions of the images formed by the reflective regions, the light-absorbing regions and the feature region on an image sensing surface of the light transceiver module so as to calibrate the actual orientations corresponding to the positions on the image sensing surface.

Calibration method

A jig for calibrating a light transceiver module includes a disposition region for the light transceiver module on which the light transceiver module is suitably disposed and an arc structure, which takes the position of the disposition region for the light transceiver module as a circle center thereof and includes reflective regions, light-absorbing regions and a feature region. The reflective regions and light-absorbing regions are alternately arranged, and the feature region is a region for reflection or for absorbing light. When the feature region is the region for reflection, the width of the region for reflection is different from the width of each the reflective region, and when the feature region is the region for absorbing light, the width of the region for absorbing light is different from width of each of the light-absorbing regions. A calibration method is also provided.

Jig and calibration method

An apparatus and a system for correcting touch signal and a method thereof are provided. The method includes the following steps. A beam is emitted to obtain a detective beam by reflecting the beam with a reflective element, and a detective signal distribution graph is generated. A plurality of intersections, a covered region and a pixel position corresponding to the covered region are obtained according to the detective signal distribution graph and a threshold value distribution graph. A first area occupied by the covered region is calculated according to the detective signal distribution graph and the plurality of intersections. Whether an overexposure is occurred in the covered region is determined according to the first area corresponding to the covered region. If the overexposure is occurred in the covered region, the covered region being overexposed and the pixel position corresponding to the covered region being overexposed are corrected.

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Taipei, Taiwan

Wei-Kuo Kan