Patent ID: 8310580

Claim:
A solid-state imaging device comprising: a pixel unit in which plural pixels that perform photoelectric conversion are arrayed in a matrix shape; and a pixel-signal readout unit that performs readout of pixel signals from the pixel unit in a unit of plural pixels, the pixel-signal readout unit including an AD conversion unit that performs analog-digital (AD) conversion, the pixel-signal readout unit including plural comparators that compare a reference signal as a ramp wave and readout analog signal potentials of the pixels in rows in which the comparators are provided, plural counter latches that are arranged to correspond to the plural comparators and configured to count comparison times of the comparators corresponding thereto, stop the count when outputs of the comparators are inverted, and store values of the count, and an adjusting unit that performs offset adjustment for the reference signal every time the AD conversion is performed and in accordance with a comparison of a luminance level of an output signal of the pixel-signal readout unit with a predetermined luminance level.