Patent ID: 8537252

Claim:
A solid-state imaging device comprising: optical black pixels of a pixel unit, said optical black pixels being configure to output black region readout signals; a readout processing unit configured to convert said black region readout signals into optical black region readout data; a clamp processing unit, said clamp processing unit includes an adder and a detection result register, wherein said adder is configured to add said optical black region readout data to detection result data, said detection result register being configured to store integrated detection data and to output said detection result data, wherein said integrated detection data within said detection result register is said detection result data, said detection result data added to said optical black region readout data becoming said integrated detection data, wherein said clamp processing unit includes: a clamp value register configured to store clamp value data and to output control signal data, said control signal data and said detection result data being used to calculate said clamp value data, a clamp digital-analog converter configured to generate a clamp, said control signal data being used to regulate a signal level of clamp signal, a ramp digital-analog converter configured to generate a ramp signal, said ramp signal being added to said clamp signal.