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. 15, 2013
Filed:
Nov. 01, 2010
Wei-chou Chen, Hsin-Chu, TW;
Chung-wen Hsu, Kaohsiung, TW;
Wei-Chou Chen, Hsin-Chu, TW;
Chung-Wen Hsu, Kaohsiung, TW;
Waltop International Corporation, Hsinchu, TW;
Abstract
A scanning method for determining the touch position of a touch input apparatus is disclosed. First of all, a first exposure process on light sensors of the touch input apparatus by light emitting device of the touch input apparatus is performed. Then the light sensors are scanned. A light sensor generating a signal with a maximum value is located. A region of partial scan of the light sensors is determined according to the position of the light sensor generating the signal with the maximum value. A second exposure process is performed on the light sensors. Then the light sensors within the region of partial scan are scanned. A light sensor generating a signal with a maximum value within the region of partial scan is located and a next region of partial scan is determined. The maximum value of the signal is calculated and the maximum value of the signal is compared to a predetermined value to determine whether the maximum value is higher than the predetermined value.