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:
Feb. 15, 2022
Filed:
Sep. 02, 2020
Applicant:
Pixart Imaging Inc., Hsin-Chu County, TW;
Inventors:
Kevin Len-Li Lim, Penang, MY;
Rizal Bin Jaffar, Penang, MY;
Assignee:
PIXART IMAGING INC., Hsin-Chu County, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/03 (2006.01); G06K 9/46 (2006.01); G06K 9/62 (2006.01); G06F 3/0354 (2013.01);
U.S. Cl.
CPC ...
G06F 3/0304 (2013.01); G06F 3/03543 (2013.01); G06K 9/4642 (2013.01); G06K 9/6202 (2013.01);
Abstract
There is provided a navigation device including an image sensor and a processor. The image sensor outputs a reference frame and a comparison frame. The processor calculates a correlation search window by changing a relative position of the comparison frame with respect to the reference frame. The processor ignores a part of pixel data of the comparison frame without being processed while calculating each correlation value of the correlation search window to reduce total computation load.