Patent ID: 8085319
Filing Date: 2011-12-27
Classification: H04N

Abstract:
1. A photoelectric conversion device comprising: a pixel unit, which includes a photoelectric converter; an amplifier, which is arranged on an output side of said pixel unit; an output unit, which is arranged on an output side of said amplifier; a first transfer switch, which is arranged in a noise transfer path between said amplifier and said output unit; a first capacitor, which is arranged to hold a noise level output from said first transfer switch; a second transfer switch, which is arranged in a data transfer path between said amplifier and said output unit; a second capacitor, which is arranged to hold a data level output from said first transfer switch; a first restriction circuit, including a first switch, the first restriction circuit being arranged between said first capacitor and said output unit; a second switch, which is arranged between said second capacitor and said output unit, wherein said first switch is controlled by a first pulse and said second switch is controlled by a second pulse, and wherein a level of said first pulse is different from that of said second pulse so as to restrict a change in a noise level to be provided to said output unit from said pixel unit via said amplifier in a noise level reading out operation; and a second restriction circuit, which restricts, between said photoelectric converter and said amplifier, a change in a noise level to be provided to said amplifier in said noise level reading out operation.