Invention Grant
US09430091B2 Coordinate positioning module, optical touch system, method of detecting power of an active touch medium, and method of switching modes of the active touch medium
有权
坐标定位模块，光学触摸系统，检测有源触摸介质的功率的方法，以及切换主动触摸介质的模式的方法
- Patent Title: Coordinate positioning module, optical touch system, method of detecting power of an active touch medium, and method of switching modes of the active touch medium
- Patent Title (中): 坐标定位模块，光学触摸系统，检测有源触摸介质的功率的方法，以及切换主动触摸介质的模式的方法
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Application No.: US13792209Application Date: 2013-03-11
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Publication No.: US09430091B2Publication Date: 2016-08-30
- Inventor: Chun-Yi Lu
- Applicant: PixArt Imaging Inc.
- Applicant Address: TW Hsin-Chu
- Assignee: PixArt Imaging Inc.
- Current Assignee: PixArt Imaging Inc.
- Current Assignee Address: TW Hsin-Chu
- Agent Winston Hsu; Scott Margo
- Priority: TW101138212A 20121017
- Main IPC: G06F3/042
- IPC: G06F3/042 ; G06F3/0354 ; G06F3/033 ; G06F3/038
Abstract:
A method of detecting power of an active touch medium is disclosed in the present invention. The method includes capturing an image with an optical signal generated from the active touch medium, reading a first threshold value, comparing an intensity of the optical signal and the first threshold value, and executing a low power mode when the intensity of the optical signal is smaller than the first threshold value.
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