Patent ID: 8872948

Claim:
A solid-state imaging device comprising: an effective pixel portion provided with effective pixels; a light-shielded pixel portion provided with light-shielded pixels; an ADC (Analog to Digital Conversion) circuit that performs an AD (Analog to Digital) conversion operation on signal components read from the effective pixel and the light-shielded pixel on the basis of a result of a comparison with a reference voltage on which a clamping voltage is superimposed; and an AD clamping circuit that calculates a clamping voltage for a target value of a black level read from the light-shielded pixel by extrapolating a relation between the clamping voltage and an AD converted value of the black level read from the light-shielded pixel when the clamping voltage is applied, wherein the AD clamping circuit gives a relation between the clamping voltage and the AD converted value of the black level read from the light-shielded pixel as a linear function, and wherein the AD clamping circuit gives clamping voltages of two or more points as the predetermined clamping voltage.