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OPTICAL TOUCH APPARATUS, A METHOD FOR DETERMINING A POSITION OF A TOUCH INDICATOR POINT AND AN OPTICAL TOUCH SYSTEM
OPTICAL TOUCH APPARATUS, A METHOD FOR DETERMINING A POSITION OF A TOUCH INDICATOR POINT AND AN OPTICAL TOUCH SYSTEM
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机译:光学触摸装置,一种确定触摸指示点的位置的方法以及一种光学触摸系统
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摘要
An optical touch apparatus configured to sense a touch operation of an optical touch stylus is provided. The optical touch apparatus includes a touch operation surface, an optical sensor and a touch controller. The optical touch stylus performs the touch operation on the touch operation surface. The optical sensor is disposed on a side of the touch operation surface and senses the light beam from the touch operation to obtain sensing data. The sensing data include an image of the optical touch stylus and a mirror image generated on the touch operation surface by the optical touch stylus. The touch controller is electrically connected to the optical sensor and calculates a brightness threshold according to the sensing data. The touch controller determines a position of the touch indicator point of the optical touch stylus on the touch operation surface according to the sensing data and the brightness threshold.
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