Patent ID: 9307175
Filing Date: 2016-04-05
CPC Classification: H04N

Claim Text:
1. An image sensor system, comprising: an amplifier that amplifies an input signal from a column of a pixel array; a sampling capacitor, that receives a signal from a pixel of said pixel array, an output of which is connectable to said amplifier; and a controller, that initially controls connecting a first plate of said sampling capacitor to receive a value from the amplifier representing an offset level of the amplifier, and while receiving the offset level from the amplifier on the first plate, receives information from said pixel on a second plate of the same capacitor that is receiving the offset, thereby canceling the offset, a selecting switch that is selected by said controller, to couple a value from said sampling capacitor indicative of said information from said pixel with said offset cancelled being coupled to said amplifier to amplify said value as a first pixel value, wherein said amplifier is also connected to other selecting switches from other pixels of said column of the pixel array.