IMAGE SENSOR AND METHOD OF OPERATING THE SAME

    公开(公告)号:US20240397221A1

    公开(公告)日:2024-11-28

    申请号:US18526343

    申请日:2023-12-01

    Abstract: An image sensor includes a pixel array including active pixels and optical black (OB) pixels; a comparator having a first input terminal at which a pixel signal of the pixel array is applied, and a second input terminal to which a ramp signal is applied; a digital-to-analog converter (DAC) that generates an OB voltage based on dark current data obtained by reading out pixel signals of the OB pixels; and a dark current removal circuit that applies a compensation voltage corresponding to the OB voltage to at least one of the first input terminal and the second input terminal during a readout period of an active pixel.

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