Patent ID: 9191598
Filing Date: 2015-11-17
Classification: H04N

Abstract:
1. A system for discrete time and feed forward correction of fixed pattern noise in a pixel array, comprising: a reset component configured to reset a pixel of the pixel array, the pixel comprising a photodiode having a signal output switchably connected to a floating diffusion node and comprising a reset transistor configured to switchably connect the floating diffusion node to a reset bus; an analyzer component configured to sample a reset level of the pixel; an adjustment component configured to receive a result of the sampled reset level and comprising a circuit to provide a feedback or a feed-forward adjustment to a power supply level on the reset bus in response to the result of the sampled reset level, wherein the feedback or the feed-forward adjustment to the reset bus facilitates correction of the fixed pattern noise; and a detection component configured to sample a signal level of the pixel for external readout from the pixel array.