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:
Jan. 12, 2016
Filed:
Sep. 10, 2012
Hsun-hao Chang, New Taipei, TW;
Yu-yen Chen, New Taipei, TW;
Sheng-hsien Hsieh, New Taipei, TW;
Shou-te Wei, New Taipei, TW;
Hsun-Hao Chang, New Taipei, TW;
Yu-Yen Chen, New Taipei, TW;
Sheng-Hsien Hsieh, New Taipei, TW;
Shou-Te Wei, New Taipei, TW;
Wistron Corporation, Hsichih, New Taipei, TW;
Abstract
An optical touch device includes an indication plane, two image sensing units and a processing unit. The two image sensing units are disposed at two corners of the indication plane diagonal to each other, respectively, and the two corners define a diagonal line connected therebetween. The processing unit is electrically connected to the two image sensing units. When two touch points are performed on the indication plane, the processing unit determines whether the two touch points are located at opposite sides of the diagonal line, respectively, according to images sensed by the two image sensing units. Once the two touch points are located at opposite sides of the diagonal line, respectively, the processing unit calculates and outputs coordinates of the two touch points immediately according to the images sensed by the two image sensing units.