Touch detection method and related optical touch system
An optical touch system includes a touch screen; a plurality of light sources for periodically emitting light; a light-emitting element for periodically emitting light when the plurality of light sources are not emitting light; a light-reflecting element, for reflecting light emitted by the plurality of light sources; a plurality of lenses, for capturing a first image during a period when the plurality of light sources are emitting light and capturing a second image during a period when the plurality of light sources are not emitting light; and a processing unit. The processing unit includes a control unit for controlling the plurality of light sources and the light-emitting element; and a computation unit for computing a first location in which the light-emitting element is located and a second location in which the light-reflecting element is located on the touch screen according to the first image and the second image.
Wistron Corporation
G G G G G G
G06F G06F G06F G06F G06F G06F
inventional additional inventional inventional inventional inventional
Kuo-Hsien Yu-Yen Chia-Ta
Lu Chen Hsieh