Invention Grant
- Patent Title: Random sampling for horizontal noise reduction
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Application No.: US15390292Application Date: 2016-12-23
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Publication No.: US10264200B2Publication Date: 2019-04-16
- Inventor: Robert Johansson
- Applicant: OMNIVISION TECHNOLOGIES, INC.
- Applicant Address: US CA Santa Clara
- Assignee: OmniVision Technologies, Inc.
- Current Assignee: OmniVision Technologies, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Christensen O'Connor Johnson Kindness PLLC
- Main IPC: H04N5/217
- IPC: H04N5/217 ; H04N5/378

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.
Public/Granted literature
- US20180184022A1 RANDOM SAMPLING FOR HORIZONTAL NOISE REDUCTION Public/Granted day:2018-06-28
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