| 摘要 |
PROBLEM TO BE SOLVED: To enhance image quality by avoiding the occurrence of a difference in DC levels among signals for reading a plurality of pixels. SOLUTION: In this solid-state image pickup element having a plurality of A/D converters to sequentially select outputs of the A/D converters and to obtain a digital video output, a noise cancel (comparison) section NR1 consists of a plurality of stages of amplifiers 501, 502 and a clamp circuit is provided to 2nd and succeeding stages of amplifiers 502.
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