The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 14, 2014
Filed:
Jul. 30, 2012
Tzung Min Su, Hsinchu, TW;
Cheng Nan Tsai, Hsinchu, TW;
Sen Huang Huang, Hsinchu, TW;
Chih Hsin Lin, Hsinchu, TW;
Tzung Min Su, Hsinchu, TW;
Cheng Nan Tsai, Hsinchu, TW;
Sen Huang Huang, Hsinchu, TW;
Chih Hsin Lin, Hsinchu, TW;
Pixart Imaging Inc., Hsin-Chu, TW;
Abstract
An optical touch system includes a touch surface having a first touch region and a second touch region, a reflective member for generating a reflection of an object on the touch surface, an image sensor for providing an image of the object and an image of the reflection, and a processing unit. The image sensor is represented by either first reference coordinate data or second reference coordinate data. The processing unit is configured to compute the coordinate data of the object using the first reference coordinate data, the image of the object, and the image of the reflection when the object is in the first touch region, and configured to compute the coordinate data of the object using the second reference coordinate data, the image of the object, and the image of the reflection when the object is in the second touch region.