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:
Mar. 17, 2015
Filed:
Feb. 11, 2013
Quanta Computer Inc., Kuei Shan Hsiang, Tao Yuan Shien, TW;
Chee-Chun Leung, Tao Yuan Shien, TW;
Yun-Cheng Liu, Tao Yuan Shien, TW;
Chien-Hung Lin, Tao Yuan Shien, TW;
Quanta Computer Inc., Guishan Dist., Taoyuan, TW;
Abstract
The invention provides an optical touch system, including a camera having a lens and an image sensor to capture an image of a touch object on the image sensor through the lens, an active light source for lighting the touch object, and a processor for determining the distance between the touch object and the camera according to the size of the image or the brightness of the image on the image sensor, determining the direction of the touch object according to the position of the image on the image sensor, and calculating the position of the touch object.