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. 10, 2023
Filed:
Jan. 14, 2023
Applicant:
Pixart Imaging Inc., Hsin-Chu County, TW;
Inventors:
Joon-Chok Lee, Penang, MY;
Kevin Len-Li Lim, Penang, MY;
Assignee:
PixArt Imaging Inc., Hsin-Chu County, TW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04N 25/67 (2023.01); G06F 3/0354 (2013.01); G06T 5/20 (2006.01);
U.S. Cl.
CPC ...
H04N 25/67 (2023.01); G06F 3/0354 (2013.01); G06T 5/20 (2013.01);
Abstract
There is provided an optical navigation device including an image sensor and a processing unit. The image sensor outputs successive image frames. The processing unit calculates a contamination level and a motion signal based on filtered image frames, and determines whether to update a fixed pattern noise (FPN) stored in a frame buffer according to a level of FPN subtraction, the calculated contamination level and the calculated motion signal to optimize the update of the fixed pattern noise.