Differential readout from pixels in CMOS sensor

Details Differential readout from pixels in CMOS sensor Differential readout from pixels in CMOS sensor

2008-05-20

2008-05-20

Ye, Lin (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S300000, C348S322000, C250S208100

Reexamination Certificate

active

07375748

ABSTRACT:
The present invention provides an improved pixel readout circuit that compensates for common mode noise during a read out operation. This is accomplished by using a differential readout of the signal and reset value from the desired pixel compared with the reset value from a reference pixel. In this manner common mode noise can be offset and therefore minimized. In one embodiment of the invention, the reference pixel is the nearest neighbor pixel in the same row. In another embodiment, the reference pixel is the nearest neighboring pixel in a different row.

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