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:
Sep. 09, 2014
Filed:
Sep. 20, 2010
Chun-chien Liao, Hsin-Chu, TW;
Chih-jen Tsang, Hsin-Chu, TW;
Yu-lun Jhu, Hsin-Chu, TW;
Chwen-tay Hwang, Hsin-Chu, TW;
Hai-yuan Wu, Hsin-Chu, TW;
Chun-Chien Liao, Hsin-Chu, TW;
Chih-Jen Tsang, Hsin-Chu, TW;
Yu-Lun Jhu, Hsin-Chu, TW;
Chwen-Tay Hwang, Hsin-Chu, TW;
Hai-Yuan Wu, Hsin-Chu, TW;
Coretronic Corporation, Hsin-Chu, TW;
Abstract
An optical touch apparatus including a first light emitting device, a second light emitting device, a third light emitting device, a fourth light emitting device, a first image detector, a second image detector, and a control unit is provided. The control unit controls the average brightness of the third light emitting device less than each of the average brightness of the second light emitting device and the fourth light emitting device when the control unit controls the first image detector to detect an image. The control unit controls the average brightness of the second light emitting device less than each of the average brightness of the first light emitting device and the third light emitting device when the control unit controls the second image detector to detect an image. A driving method is also provided.