Apparatus and method for output signal with corresponding bias of photocells in linear CMOS sensor

摘要

Apparatus for output in combination of an image data signal and a corresponding bias signal in a linear CMOS sensor is provided. The apparatus comprises enabling circuits for enabling first switch devices of the photocells. Each first switch device is on a bypass of an access from the photocell to a second switch device and the second switch device on an access for the photocell to a common bus. A method for output in combination of an image data signal and a corresponding bias signal in a linear CMOS sensor of a scanner is provided. The method comprises providing photocells arranged in a row that each photocell has an access to a common bus controlled by a corresponding first switch device. Each photocell further has a bypass of the access controlled by a corresponding second switch device. The first switch devices are enabled by a plurality of control lines that each control line is from a corresponding AND gate that makes AND operation for a corresponding pixel select line and a common reset line.