Patent ID: 8525901
Filing Date: 2013-09-03
Classification: H01L,H04N

Abstract:
1. A solid-state image sensing device comprising: a pixel section in which cells are two-dimensionally arrayed in rows and columns on a semiconductor substrate, each cell including a photoelectric conversion unit, a reading circuit which reads out, to a detection unit, signal charges obtained by photoelectrically converting incident light by the photoelectric conversion unit, an amplifying circuit which amplifies and outputs a voltage corresponding to the signal charges stored in the detection unit, and a reset circuit which resets the signal charges of the detection unit; an exposure time control circuit which controls an exposure time during which the photoelectric conversion unit performs photoelectric conversion, and controls the exposure time to be equal for all cells; an A/D conversion circuit which A/D-converts a signal output from the pixel section by changing a resolution of a signal level; line memories which store a signal converted by the A/D conversion circuit; and a signal processing circuit which processes output signals from the line memories to have a linear gradient with respect to an optical input signal amount by controlling an amplification factor in accordance with a resolution of a pixel output signal after the A/D conversion circuit.