OPTICAL TOUCH SYSTEM AND A POSITIONING METHOD THEREOF
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United States of America Patent
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Issued Date -
Feb 21, 2013
app pub date -
May 30, 2012
filing date -
Aug 19, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present disclosure provides an optical touch system and a positioning method thereof based on stereo vision theory. The proposed optical touch system adopts at least two adjustable linear image sensors to capture image information so that the information can be applicable to different sizes of touch screens by adjusting locations of the image sensors. Sensing area covers the whole screen without the need to increase quantity of sensors; besides, the present disclosure also provides a positioning method for the optical touch system, malting the spectra emitted by a stylus correspond to the image sensors, which leaves out complicated image processing to improve the speed and accuracy of touch response.
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