Patent ID: 7081608
Filing Date: 2006-07-25
Classification: H01L,H04N

Abstract:
1. A differential pixel for an imager device, said pixel comprising: a plurality of photosensors; a plurality of transfer transistors, each transfer transistor connected to and transferring charge from a respective photosensor; a plurality of storage nodes, each node being coupled to a respective transfer transistor and storing charge transferred by a respective one of said plurality of photosensors; a plurality of reset transistors, each reset transistor being coupled between a reset voltage source and a respective storage node; and a differential amplifier connected to said storage nodes and outputting a plurality of differential signals for each photosensor, wherein said differential amplifier outputs a first differential signal on a first output line, said first differential signal comprising a difference between a plurality of reset voltage signals input from said storage nodes, and outputs a second differential signal on the first output line, said second differential signal comprising a difference between a pixel voltage signal input from a first storage node and a reset voltage signal input from a second storage node.