发明名称 |
Column readout circuit with increased signal range for CMOS image sensor |
摘要 |
<p>A column readout circuit for a CMOS image sensor is disclosed. The circuit uses MOS capacitors to store a photo signal and a reset signal. Correlated double sampling is used to eliminate fixed pattern noise and 1/f noise. Additionally, the signals are coupled through the capacitors using AC coupling. In this manner, a readout circuit compatible with conventional CMOS logic processes can be manufactured. <IMAGE></p> |
申请公布号 |
EP1349380(B1) |
申请公布日期 |
2006.02.01 |
申请号 |
EP20030251883 |
申请日期 |
2003.03.25 |
申请人 |
OMNIVISION TECHNOLOGIES INC. |
发明人 |
HE, XINPING;YANG, HONGLI;SHAN, QUINGWEI |
分类号 |
H04N5/217 |
主分类号 |
H04N5/217 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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