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:
Sep. 29, 2015
Filed:
Jan. 27, 2011
Applicants:
Chih-yen Wu, Hsinchu County, TW;
Yao-hsuan Lin, Hsinchu County, TW;
Yen-min Chang, Hsinchu County, TW;
Inventors:
Chih-Yen Wu, Hsinchu County, TW;
Yao-Hsuan Lin, Hsinchu County, TW;
Yen-Min Chang, Hsinchu County, TW;
Assignee:
PIXART IMAGING INC., Hsinchu County, TW;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 3/042 (2006.01); G06F 3/038 (2013.01); G06F 3/0354 (2013.01);
U.S. Cl.
CPC ...
G06F 3/038 (2013.01); G06F 3/03543 (2013.01);
Abstract
A lift detection method for an optical mouse and an optical mouse with a lift detection function are presented. An average brightness value of pixels captured by part of sensing units of an image sensor is computed after each scanning, and two average brightness values obtained from two adjacent times of scanning are compared, to determine a brightness change of the pixels in each scanning, thereby acquiring a placing state of the optical mouse accordingly.