Jianq Chyun IP Office
Optical touch apparatus and optical touch method for multi-touch
An optical touch apparatus including a light source module, two optical sensing modules and a processing unit is provided. The light source module provides a touch light source for a touch area. The optical sensing modules are disposed corresponding to two corners of the touch area. The processing unit is coupled to the light source module and the optical sensing modules, and controls the light source module to provide the touch light source in a first touch mode and a second touch mode and stop providing the touch light source in a third touch mode. Each of the optical sensing modules continuously senses and outputs a plurality of sensing signals. The processing unit determines a plurality of touching features of the sensing signals respectively to calculate positions of a plurality of touching objects on the touch area. An optical touch method is also provided.
Wistron Corporation
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G06F G06F G06F
additional inventional inventional
Yu-Yen Kuo-Hsien
Chen Lu