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. 02, 2024
Filed:
May. 04, 2023
Pixart Imaging Inc., Hsin-Chu, TW;
Bo-Yi Chang, Hsin-Chu, TW;
Yao-Hsuan Lin, Hsin-Chu, TW;
PixArt Imaging Inc., Hsin-Chu, TW;
Abstract
An optical navigation device control method comprising: (a) computing brightness contrast information of original images captured by an image sensor of an optical navigation device; (b) computing brightness variation levels of the original images; (c) improving image qualities of the original images based on the brightness contrast information and the brightness variation levels, to generate adjusted images; and (d) computing movements of the optical navigation device based on displacement between the adjusted images. The optical navigation device is located on a surface. The step (d) comprises: collecting reference images of different parts of the surface for a plurality of combinations of moving directions of the optical navigation device and placement directions of the surface; and determining a type of the surface via comparing images of a current surface with the reference images.