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:
Aug. 25, 2015
Filed:
Apr. 30, 2013
Wistron Corporation, New Taipei, TW;
Chun-Chieh Li, New Taipei, TW;
Yu-Yen Chen, New Taipei, TW;
Wistron Corporation, Hsichih, New Taipei, TW;
Abstract
A method of determining whether a lens device is shifted is applied to an optical touch system including a screen, a first light source and a first lens device respectively disposed corresponding to a first corner of a touch surface of the screen, and first and second optical strips respectively disposed at first and second sides of the touch surface. The method includes the first lens device setting a first brightness threshold according to a first original image captured by the first lens device toward the touch surface, disposing first and second reflection members at one end of the first optical strip and one end of the second optical strip respectively, and the first lens device determining whether a first optical axis of the first lens device is shifted according to the first brightness threshold and a first actual image captured by the first lens device.