Patent ID: 7456884

Claim:
An image array pixel comprising: a charge sharing node; a photosensor coupled to said charge storing node; a controllable voltage source for supplying one of a first and second voltage level; said first voltage level being higher than said second voltage level; a reset transistor having source/drain regions on opposite sides of a gate, one of said source/drain regions being switchably coupled to an output of said controllable voltage source first and second voltage sources for providing first and second voltages, respectively, the other of said source/drain regions being coupled to said charge storing node; a reset control circuit coupled to a gate of said reset transistor, said reset control circuit for selectively providing a first reset control signal at a first level and a second reset control signal at a second level, said first level being higher than said second level, said reset control circuit and controllable voltage source being controllable during first, second, and third time intervals such that: during said second time interval, said reset control circuit supplies said second reset control signal to said gate of said reset transistor while said controllable voltage source provides said second voltage to operate said reset transistor to partially remove charges from said photosensor, during said third time interval, said reset control circuit supplies said first reset control signal to said gate of said reset transistor, said controllable voltage source provides said first voltage to substantially remove all charges from said photosensor.