System and method for canceling dark photocurrent in a color sensor circuit

作者: Boon Keat Tan , Chi Mun Ho , Kevin Len Li Lim

DOI:

关键词: PhotocurrentPhysicsInput offset voltageDifferential amplifierDark colorOptoelectronicsOpticsColor sensorVoltage

摘要: A system and method for canceling dark photocurrent in a color sensor circuit is disclosed. described including circuit, differential amplifier circuit. The receives from component of light input. outputs first voltage indicating intensity the component. second an offset voltage. coupled to voltages final output that cancels contributions due photocurrent.

参考文章(14)
Cecil James Aswell, Eugene G. Dierschke, John H. Berlien, Lester L. Hodson, Method and apparatus for optical detector with spectral discrimination ,(2002)
Kevin W. Jelley, King F. Lee, Multicolor light sensing pixel structure ,(2003)
Stuart D. J. Boyd, Dahong Qian, Spatially offset, row interpolated image sensor ,(1998)
Junji Hiraishi, Shinya Sonoda, Atsushi Noda, Hiroki Tabata, Masashi Sugimoto, Image reader with adjustable contrast range ,(1992)
Gambera A, Gaebele R, Automatic dark current control ,(1971)