Invention Grant
- Patent Title: Correlated double sampling circuit, image sensor including the same, and image processing system including the image sensor
- Patent Title (中): 相关的双采样电路，包括图像传感器的图像传感器和图像处理系统
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Application No.: US12801999Application Date: 2010-07-07
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Publication No.: US08514306B2Publication Date: 2013-08-20
- Inventor: Wun-Ki Jung , Seog Heon Ham , Dong Hun Lee , Kwi Sung Yoo , Min Ho Kwon
- Applicant: Wun-Ki Jung , Seog Heon Ham , Dong Hun Lee , Kwi Sung Yoo , Min Ho Kwon
- Applicant Address: KR Gyeonggi-Do
- Assignee: Samsung Electronics Co., Ltd.
- Current Assignee: Samsung Electronics Co., Ltd.
- Current Assignee Address: KR Gyeonggi-Do
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: KR10-2009-0088755 20090918
- Main IPC: H04N5/20
- IPC: H04N5/20
Abstract:
A correlated double sampling (CDS) circuit is provided. The CDS circuit is configured to perform a CDS on a reset signal and an image signal during a CDS phase respectively. The CDS circuit includes a sampling circuit configured to output a difference between a correlated double sampled reset signal and a correlated double sampled image signal, and a feedback unit configured to feedback the difference output from the sampling circuit during a PGA phase to an input of the sampling circuit.
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