Patent ID: 8502899

Claim:
A solid-state imaging device comprising: an analog to digital (A/D) conversion unit, the A/D conversion unit comprising: a reference signal generation section that generates a reference signal whose level changes gradually; a comparison section the compares the reference signal and a target analog signal; and a counter section that performs a counting based on a count clock and a result of the comparison of the reference signal and the target analog signal, the A/D conversion obtaining digital data of the target analog signal based on output data of the counter section, the solid-state imaging device further comprising: a drive control section that controls the reference signal generation section and the A/D conversion unit to perform a digital integration that repeats an n-bit A/D conversion on the target analog signal W times, where W is a positive integer equal to or greater than 2, wherein, the drive control section sets a factor for each of a plurality of target analog signals and obtains digital data of the plurality of target analog signals by multiplying each target analog signal by the respective factor and summing the respective results thereof.