Patent ID: 8878117

Claim:
An image sensor comprising: pixel sections each including a photoelectric conversion element which converts incident light into charges, the pixel sections corresponding to unit pixels which are two-dimensionally arranged in a row direction and a column direction and generate analog signals corresponding to the charges; a column signal line configured to output the analog signals generated in said pixel sections in the column direction; a first addition unit which adds, in the column direction, analog signals of a plurality of rows output to said column signal line; an A/D converter which converts the analog signal amplified by a column amplifier into a digital signal for each column; a row signal line configured to output the digital signal converted by said A/D converter in the row direction; a second addition unit which adds, in the row direction, digital signals of a plurality of columns output to said row signal line; and a first scanning unit which reads analog signals generated in said pixel sections of an arbitrary row to said column signal line.