| 摘要 |
PROBLEM TO BE SOLVED: To perform an AD conversion quickly and with a low charge without making a pixel array part and an optical system large in size, and to output a digital image signal of high picture quality by a simultaneous AD conversion. SOLUTION: The pixel array part 110 has an photoelectric transducer and a pixel transistor every picture element 111 and outputs an analog pixel signal. An AD memory part 130 is constituted by arranging a unit memory 131 in a two-dimensional array corresponding to each pixel array in the pixel array part 110. The analog pixel signal read out through a vertical signal line is accumulated sequentially and a variety of processing including the AD conversion (for example, solid-state pattern noise elimination, gain adjustment or the like by CDS) is performed. Then, each unit memory 131 of the AD memory part 130 is provided with an AD converting circuit 132, and the analog pixel signal read out from each pixel by the AD converting circuit 132, and the analog pixel signal read from each pixel by the AD converting circuit 132 is converted into a digital pixel signal. COPYRIGHT: (C)2004,JPO
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