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:
Apr. 03, 2018
Filed:
Aug. 21, 2014
Applicant:
Pixart Imaging (Penang) Sdn. Bhd., Penang, MY;
Inventors:
Joon-Chok Lee, Penang, MY;
Kevin Len-Li Lim, Penang, MY;
Assignee:
PIXART IMAGING INC., Hsin-Chu County, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 3/0354 (2013.01); G01B 11/14 (2006.01); G06F 3/03 (2006.01);
U.S. Cl.
CPC ...
G06F 3/03543 (2013.01); G01B 11/14 (2013.01); G06F 3/0304 (2013.01);
Abstract
There is provided a navigation device including an image sensor and a processing unit. The image sensor is configured to capture reflected light of a work surface with a low-speed period to generate image frames, wherein the image sensor captures a pair of image frames in each low-speed period. The processing unit is configured to calculate acceleration according to the pair of image frames to accordingly identify whether to adjust the low-speed period to a high-speed period.