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. 16, 2019
Filed:
Dec. 23, 2016
Omnivision Technologies, Inc., Santa Clara, CA (US);
Robert Johansson, Oslo, NO;
OmniVision Technologies, Inc., Santa Clara, CA (US);
Abstract
An example apparatus for random sampling for horizontal noise reduction includes readout circuitry coupled to receive image data from an array of pixels, the readout circuitry including a plurality of sample and hold (S&H) circuits coupled to respective ones of a plurality of bitlines to sample and hold the image data in response to a plurality of S&H control signals, each of the plurality of S&H circuits including an S&H capacitor and an S&H switch. The S&H capacitor samples and holds respective image data, and the S&H switch coupled between a respective bitline and the respective S&H capacitor, and further coupled to receive a respective one of the plurality of S&H control signals to open/close the S&H switch, where each of the plurality of S&H switches are opened to decouple their respective S&H capacitors from the respective bitlines at a different time.