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:
May. 22, 2018
Filed:
Mar. 02, 2016
Wistron Corporation, New Taipei, TW;
Kuo-Hsien Lu, New Taipei, TW;
Wistron Corporation, New Taipei, TW;
Abstract
An optical touch apparatus configured to sense a touch operation of an optical touch stylus is provided. The optical touch apparatus includes a touch operation surface, an optical sensor and a touch controller. The optical touch stylus performs the touch operation on the touch operation surface. The optical sensor is disposed on a side of the touch operation surface and senses the light beam from the touch operation to obtain sensing data. The sensing data include an image of the optical touch stylus and a mirror image generated on the touch operation surface by the optical touch stylus. The touch controller is electrically connected to the optical sensor and calculates a brightness threshold according to the sensing data. The touch controller determines a position of the touch indicator point of the optical touch stylus on the touch operation surface according to the sensing data and the brightness threshold.