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. 15, 2019
Filed:
Jun. 08, 2018
Applicant:
Pixart Imaging Inc., Hsin-Chu County, TW;
Inventor:
Willie Song, Penang, MY;
Assignee:
PIXART IMAGING INC., Hsin-Chu County, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 3/03 (2006.01); G06F 3/0354 (2013.01); G06T 5/00 (2006.01); G06T 5/20 (2006.01); G06T 5/50 (2006.01); G06T 7/00 (2017.01);
U.S. Cl.
CPC ...
G06F 3/0317 (2013.01); G06F 3/03543 (2013.01); G06T 5/002 (2013.01); G06T 5/20 (2013.01); G06T 5/50 (2013.01); G06T 7/001 (2013.01); G06T 2207/10016 (2013.01); G06T 2207/20182 (2013.01);
Abstract
There is provided a failure identification method of an optical navigation device including the steps of: constructing a fixed noise map according to image frames captured by an image sensor; calculating a feature value of the fixed noise map; identifying whether the fixed noise map is uniform or not according to the feature value; and generating an alert signal when the fixed noise map is non-uniform for indicating failure of the optical navigation device.