| 摘要 |
PROBLEM TO BE SOLVED: To provide a solid-state imaging device and a camera system that can improve a clamp convergence speed. SOLUTION: The solid-state imaging device includes: a pixel unit 110 in which pixels that perform photoelectric conversion are arranged in an optical black region and a valid pixel region; a readout processing unit 150 that applies, to a readout signal of the pixel unit, readout processing corresponding to a reference signal subjected to clamp processing; and clamp processing units 200 and 164 that clamp, referring to a readout signal level in the optical black region, a reference signal in the valid pixel region with an acquired clamp value, which is a value with which the signal level is reduced to zero. The clamp processing units acquire, when information concerning readout is changed, a clamp value predicted from the clamp value before the change and a ratio of charge accumulation times before and after the change, and the readout processing unit performs first signal readout processing after the change with a reference signal clamped by the predicted clamp value. COPYRIGHT: (C)2011,JPO&INPIT
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