Patent ID: 9319612
Filing Date: 2016-04-19
CPC Classification: H04N

Claim Text:
1. A pixel array, comprising: an imaging pixel having a floating diffusion region; and ramp circuitry that provides a ramp signal to the floating diffusion region of the imaging pixel, wherein the imaging pixel comprises a photodiode; a transfer gate that is coupled between the photodiode and the floating diffusion region; a source-follower transistor having a gate terminal coupled to the floating diffusion region; supply circuitry; a row select transistor coupled between the ramp circuitry and the floating diffusion region; and a reset transistor coupled between the floating diffusion region and the supply circuitry wherein the reset transistor has a gate terminal that receives a reset signal, wherein the supply circuitry provides a control signal to a source-drain terminal of the reset transistor, and wherein the reset transistor uses the reset signal and the control signal to selectively enable and disable the source-follower transistor.