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US09055250B2 Correlated double sampling circuit, method thereof and devices having the same 有权
相关双采样电路及其方法及其装置

Correlated double sampling circuit, method thereof and devices having the same
Abstract:
A CDS circuit includes first capacitors; second capacitors; and a switch arrangement which, in response to a switch control signal, connects the first capacitors in series between a pixel signal output node and a ground to compress the pixel signal and connects the second capacitors in series between a ramp signal output node and the ground to compress the ramp signal, or connects the first capacitors in parallel between the pixel signal output node and a first input node of the comparator and connects the second capacitors in parallel between the ramp signal output node and a second input node of the comparator.
Abstract(Chinese):

CDS电路包括第一电容器; 第二电容器; 以及开关装置，其响应于开关控制信号将第一电容器串联连接在像素信号输出节点和地之间以压缩像素信号，并将第二电容器串联连接在斜坡信号输出节点和地之间 压缩斜坡信号，或者将像素信号输出节点和比较器的第一输入节点并联的第一电容器连接在斜坡信号输出节点和比较器的第二输入节点之间并联连接第二电容器。

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