Patent ID: 9001247
Filing Date: 2015-04-07
Classification: H04N

Abstract:
1. An imaging system comprising: a plurality of pixels; an amplifier including an input node connected to the plurality of pixels via an input capacitor, and an output node connected to the input node via a feedback capacitor; a reset unit configured to reset the input node to a base potential, a signal level adjusting unit, and wherein the imaging system is operative of operating in an addition mode adding signals from the plurality of pixels to the feedback capacitor, wherein the amplifier is configured to hold a noise output from one of the plurality of pixels in the input capacitor in the addition mode, and thereafter adds the signals output from two or more of the plurality of pixels to the feedback capacitor, and wherein the signal level adjusting unit is configured to obtain a difference between a signal obtained by applying a gain to a base signal output from the amplifier according to the reset of the input node of the amplifier by the reset unit and a signal added to the feedback capacitor.