发明名称 |
DC level control method, clamp circuit, and imaging apparatus |
摘要 |
A dc level control method for holding a dc level of a clamp portion in an electric signal to be a prescribed value is disclosed, wherein the method comprises the steps of: comparing a dc level of a sampling interval in said electric signal with a predetermined reference value to obtain a difference between said dc level and said reference value using an A/D converting section for dc level comparison which has a lower bit resolution than an A/D converting section for digital signal processing of said electric signal; and feeding back a clamp signal to said electric signal so that said obtained difference between said dc level and said reference value substantially becomes zero. This method is suitable for applying to a signal processing system for a solid state imaging apparatus.
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申请公布号 |
US7295234(B2) |
申请公布日期 |
2007.11.13 |
申请号 |
US20030443761 |
申请日期 |
2003.05.23 |
申请人 |
SONY CORPORATION |
发明人 |
HISAMATSU YASUAKI;HARUTA TSUTOMU;KOSEKI KEN |
分类号 |
H04N5/16;H04N5/18;H04N5/335;H04N5/357;H04N5/372;H04N5/378 |
主分类号 |
H04N5/16 |
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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