公开(公告)号：US09380231B2

公开(公告)日：2016-06-28

申请号：US14595317

申请日：2015-01-13

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Han Yang ,  Sin-Hwan Lim ,  Kyoung-Min Koh ,  Jae-Cheol Yun ,  Kwang-Hyun Lee ,  Soon-Ik Cho

IPC: H04N5/357 ,  H04N5/378

CPC classification number: H04N5/3575 ,  H04N5/378

Abstract: A correlated double sampling (CDS) circuit may include a sampling circuit and a switching circuit. The CDS circuit may perform a CDS operation on a reset component of an input signal and an image component of the input signal based on a ramp signal, and the CDS circuit may generate an output signal. The switching circuit may include an auto-zero switch that connects a first input terminal receiving the input signal to an output node in response to an auto-zero control signal during an auto-zero interval. The switching circuit may connect a first terminal of the auto-zero switch to a reference voltage in order to cutoff a leakage current flowing to the auto-zero switch in response to a first boosting control signal during a first comparison interval and a second comparison interval. The output signal may be provided at the output node.

Abstract translation: 相关双采样（CDS）电路可以包括采样电路和开关电路。 CDS电路可以基于斜坡信号对输入信号的复位分量和输入信号的图像分量执行CDS操作，并且CDS电路可以生成输出信号。 开关电路可以包括自动调零开关，其在自动归零区间期间响应于自动归零控制信号将接收输入信号的第一输入端连接到输出节点。 开关电路可以将自动调零开关的第一端连接到参考电压，以便在第一比较间隔和第二比较间隔期间响应于第一升压控制信号来截止流向自动调零开关的漏电流 。 可以在输出节点处提供输出信号。