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:
Oct. 27, 2015
Filed:
Apr. 13, 2012
Tzung Min Su, Hsinchu, TW;
Yu Chia Lin, Hsinchu, TW;
Teng Wei Hsu, Hsinchu, TW;
Chih Hsin Lin, Hsinchu, TW;
Cheng Nan Tsai, Hsinchu, TW;
Tzung Min Su, Hsinchu, TW;
Yu Chia Lin, Hsinchu, TW;
Teng Wei Hsu, Hsinchu, TW;
Chih Hsin Lin, Hsinchu, TW;
Cheng Nan Tsai, Hsinchu, TW;
Pixart Imaging Inc., Hsin-Chu, TW;
Abstract
An image processing method for an optical touch system includes the steps of obtaining an image and generating a light distribution curve pattern from the image, selecting a target signal of the light distribution curve pattern in accordance with light intensity information of the light distribution curve pattern, determining at least one rising slope and at least one falling slope of the target signal, and selecting the target signal as an object signal when the absolute values of the at least one rising slope and at least one falling slope are greater than a threshold.