Patent ID: 7969484

Claim:
A solid-state image sensing device comprising: a pixel section having photodiodes two-dimensionally arrayed on a semiconductor substrate, a reading circuit which reads out signal charges from the photodiodes to detectors, a detection circuit which converts the signal charges into a voltage, an output circuit which outputs the voltage of the detection circuit, and a reset circuit which resets the detection circuit, an exposure time control circuit which controls an exposure time during which the photodiode performs photoelectric conversion, a storage circuit which stores a signal output from the output circuit, an A/D conversion circuit which A/D-converts a signal stored in the storage circuit, a plurality of line memories which store signals converted by the A/D conversion circuit, and a signal processing circuit which processes a plurality of output signals from the plurality of line memories, wherein a signal photoelectrically converted and stored in the photodiode is read out by the reading circuit, and held in the detection circuit or storage circuit, and without resetting the held signal is A/D-converted by a plurality of number of times by changing a resolution of an input signal level of the A/D conversion circuit, and the signal A/D-converted by a plurality of number of times is stored in the plurality of line memories, and the signal processing circuit comprises a linear conversion/synthesizing circuit which controls an amplitude of a signal amplifier corresponding to the resolution in accordance with the plurality of the output signals and causes a same gradient optical to input signal amounts, and which synthesizes them into one signal by a switching circuit.