Invention Grant
- Patent Title: Optical touch system and optical touch control method
- Patent Title (中): 光触摸系统和光触控制方法
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Application No.: US13856432Application Date: 2013-04-03
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Publication No.: US09207809B2Publication Date: 2015-12-08
- Inventor: Tzung-Min Su , Chi-Chieh Liao , Han-Ping Cheng , Chih-Hsin Lin , Ming-Tsan Kao
- Applicant: PixArt Imaging Inc.
- Applicant Address: TW Hsinchu
- Assignee: PIXART IMAGING INC.
- Current Assignee: PIXART IMAGING INC.
- Current Assignee Address: TW Hsinchu
- Agent Cheng-Ju Chiang
- Priority: TW101128949 20120810
- Main IPC: G09G5/00
- IPC: G09G5/00 ; G06F3/042 ; G06F3/041

Abstract:
An optical touch control method includes steps of: providing a bright background from at least one edge of a touch surface in a first period; providing illumination light to the touch surface in a second period; capturing a first image of an indicator object blocking a portion of the bright background in the first period; and capturing a second image of the indicator object reflecting the illumination light in the second period. An optical touch system is also provided.
Public/Granted literature
- US20140043297A1 Optical Touch System and Optical Touch Control Method Public/Granted day:2014-02-13
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