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:
Jul. 02, 2024
Filed:
Apr. 27, 2023
Applicant:
Pixart Imaging Inc., Hsin-Chu County, TW;
Inventors:
Kuan-Choong Shim, Penang, MY;
Meng-Yee Lim, Penang, MY;
Priscilla Tze-Wei Goh, Penang, MY;
Gim-Eng Chew, Penang, MY;
Assignee:
PIXART IMAGING INC., Hsin-Chu County, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D 5/347 (2006.01); G01D 18/00 (2006.01);
U.S. Cl.
CPC ...
G01D 5/34723 (2013.01); G01D 5/3473 (2013.01); G01D 18/001 (2021.05); G01D 2205/20 (2021.05);
Abstract
There is provided an optical encoding system including a processor, and a photodiode array and a code disk opposite to each other. The photodiode array includes a detection photodiode group and a calibration photodiode group. If there is a position deviation between the photodiode array and the code disk, the processor determines whether to utilize detection signals of the calibration photodiode group according to phase shifts between detection signals outputted by the detection photodiode group so as to eliminate the phase shifts.