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:
Nov. 11, 2025
Filed:
Aug. 01, 2023
Omnivision Technologies, Inc., Santa Clara, CA (US);
Hiroaki Ebihara, San Jose, CA (US);
Nobuhiro Yanagisawa, San Jose, CA (US);
Satoshi Sakurai, Cupertino, CA (US);
Tomoyasu Tate, Cupertino, CA (US);
Naoki Kitazawa, Yokohama, JP;
Kohei Harada, Yokohama, JP;
OMNIVISION TECHNOLOGIES, INC., Santa Clara, CA (US);
Abstract
An imaging system comprises a pixel array configured to generate a plurality of image charge voltage signals in response to incident light, and readout circuitry coupled to the pixel array, the readout circuitry including a plurality of column unit cells. Each column unit cell comprises at least one of a plurality of comparators, wherein each comparator is coupled to receive the ramp signal from the ramp generator through a ramp signal line. Each column unit cell also comprises a compensation current unit coupled to the ramp signal line, each compensation current unit comprising a compensation current source and a compensation current switch coupled to the compensation current source, wherein the compensation current source and the compensation current switch are coupled between a first node on the ramp signal line and a second node.