Patent ID: 9006630
Filing Date: 2015-04-14
Classification: H04N

Abstract:
1. A system for improved optically black reference pixels in a complementary metal-oxide-semiconductor imaging system-on-chip sensor, comprising: a read component configured to indicate pixels to be read out during a readout time interval and control a first reset function that operates optically black rows used for fixed pattern noise correction; a first reset component configured to indicate pixels to be reset during the readout time interval and control a second reset function; a second reset component configured to control a third reset function based on changes to a vertical window or an integration time during the readout time interval, wherein the third reset function does not have a constant input pulse; and a control component configured to retain the integration time of the optically black reference pixels of column fixed pattern noise rows at a minimal value, control a fourth reset function by causing the fourth reset function to enter an idle mode when the optically black reference pixels are not being read out, and implement the fourth reset function before the read component implements the first reset function, wherein the integration time of the optically black reference pixels of column fixed pattern noise rows is independent of another integration time of other rows and the optically black reference pixels are used to measure the column fixed pattern noise.