Active pixel sensor with reduced fixed pattern noise

Details Active pixel sensor with reduced fixed pattern noise Active pixel sensor with reduced fixed pattern noise

2005-02-22

2005-02-22

Garber, Wendy R. (Department: 2612)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C250S208100

Reexamination Certificate

active

06859227

ABSTRACT:
An image sensor includes pixels each of which is designed to transfer charge, accumulated in a photoactive region of the pixel during a first period, through a second active region of the pixel to a power supply node, and to transfer charge, accumulated in the photoactive region during a second period, through the second active region to a sense node in the pixel. Passing charge through the second active region prior to transferring it either to the power supply node or the sense node can help reduce fixed pattern noise. The image sensor can be operated in snap-shot mode.

REFERENCES:
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patent: 6069377 (2000-05-01), Prentice et al.
patent: 6130713 (2000-10-01), Merrill
patent: 6215139 (2001-04-01), Iida et al.
patent: 6326230 (2001-12-01), Pain et al.
patent: 6380572 (2002-04-01), Pain et al.

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