Processing Apparatus of Optical Touch System and Operating Method Thereof
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United States of America Patent
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Jul 3, 2014
app pub date -
Dec 26, 2013
filing date -
Dec 28, 2012
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Abstract
An operating method of an optical touch system is provided. The method includes the following steps of: performing at least one test sensing step for obtaining a luminance characteristic value until the luminance characteristic value is smaller than a first threshold value, the test sensing period of each test sensing step is shorter than the period of the previous test sensing step; performing at least one subsequent sensing step based on the test sensing period of the last test sensing step for obtaining a subsequent image; calculating a sensing image based on the at least one subsequent image; and performing a position determining step of each object shown on the sensing image.
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