Invention Grant
US08462246B2 Apparatus and method for CDS and ADC with multiple samplings in image sensor
有权
在图像传感器中具有多次采样的CDS和ADC的装置和方法
- Patent Title: Apparatus and method for CDS and ADC with multiple samplings in image sensor
- Patent Title (中): 在图像传感器中具有多次采样的CDS和ADC的装置和方法
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Application No.: US11899677Application Date: 2007-09-07
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Publication No.: US08462246B2Publication Date: 2013-06-11
- Inventor: Myoung-Su Lee , June-Soo Han
- Applicant: Myoung-Su Lee , June-Soo Han
- Applicant Address: KR Suwon-si
- Assignee: Samsung Electronics Co., Ltd.
- Current Assignee: Samsung Electronics Co., Ltd.
- Current Assignee Address: KR Suwon-si
- Agent Monica H. Choi
- Priority: KR2006-86688 20060908
- Main IPC: H04N3/14
- IPC: H04N3/14 ; H04N5/335 ; H03M1/00 ; H03M1/12
Abstract:
For analog to digital conversion with correlated double sampling in an image sensor, a pixel signal from a given pixel is sampled to generate a respective sampled signal N-times, with N>1 within a horizontal scan time period. A ramp signal is generated with a respective ramping portion for each respective sampled signal. Each respective sampled signal is compared with a respective ramping portion to generate a respective comparison signal that determines a respective digital code. The N respective digital codes are summed to generate a final digital code with reduced random noise.
Public/Granted literature
- US20080094494A1 Apparatus and method for CDS and ADC with multiple samplings in image sensor Public/Granted day:2008-04-24
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