| 摘要 |
PROBLEM TO BE SOLVED: To provide a solid-state imaging device which improves image quality of an output image while suppressing increase of frequency of AD conversion. SOLUTION: In a solid-state imaging device to be loaded in an imaging apparatus such as a digital camera, a ramp run-up AD conversion circuit 106 for AD converting a pixel signal is provided corresponding to one or a plurality of pixel columns. A column counter 208 provided in each ramp run-up AD conversion circuit 106 holds an upper bit, and a clock signal 121 is supplied to one or plural latches 308 for holding a lower bit. Thus, fast and accurate AD conversion can be achieved while suppressing increase of clock frequency. COPYRIGHT: (C)2009,JPO&INPIT
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