Invention Grant
- Patent Title: Optical touch panel system, optical apparatus and positioning method thereof
- Patent Title (中): 光触摸屏系统，光学装置及其定位方法
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Application No.: US14314455Application Date: 2014-06-25
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Publication No.: US09471180B2Publication Date: 2016-10-18
- Inventor: Ming-Tsan Kao , Chi-Chieh Liao , Chih-Hsin Lin , Tzung-Min Su
- Applicant: Ming-Tsan Kao , Chi-Chieh Liao , Chih-Hsin Lin , Tzung-Min Su
- Applicant Address: TW Hsin-Chu
- Assignee: PIXART IMAGING INCORPORATION, R.O.C.
- Current Assignee: PIXART IMAGING INCORPORATION, R.O.C.
- Current Assignee Address: TW Hsin-Chu
- Agency: Tung & Associates
- Main IPC: G06F3/042
- IPC: G06F3/042 ; G06F3/041
Abstract:
The present invention discloses an optical touch panel system and a positioning method for positioning an object in a touch control area. The system includes: at least two reflective elements respectively disposed on a first side and a second side of the touch control area, wherein the sum of lengths of the first side and the second side is larger than the sum of lengths of the two reflective elements; two lighting elements respectively disposed on a third side and a fourth side of the touch control area; an image sensor forming projected images by capturing an image of the object and at least one mirror image of the object formed by the two reflective elements; and a processor calculating the coordinates of the object according to geometric information of the projected images.
Public/Granted literature
- US20140306934A1 OPTICAL TOUCH PANEL SYSTEM, OPTICAL APPARATUS AND POSITIONING METHOD THEREOF Public/Granted day:2014-10-16
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