Pixel or column fixed pattern noise mitigation using partial...

Details Pixel or column fixed pattern noise mitigation using partial... Pixel or column fixed pattern noise mitigation using partial...

2008-06-27

2011-11-29

Tran, Sinh (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S222100, C348S243000

Reexamination Certificate

active

08068152

ABSTRACT:
Systems and methods are provided that facilitate mitigating pixel or column fixed pattern noise in a CMOS imaging System-on-Chip (iSoC) sensor. Pixel or column fixed pattern noise can be recognized by gating a pixel array without firing a transfer signal (TX). Inhibiting the transfer signal can cause zero input to be provided to pixels in the pixel array; thus, the sampled output from the pixels under such conditions can be a function of noise. Calibration and correction can thereafter be effectuated. Additionally or alternatively, pixel or column fixed pattern noise can be managed by controlling a frame rate; thus, the frame rate can be reduced under low light conditions to enable integrating incident light for longer periods of time as well as providing reference frames of pixels generated from zero input that can be utilized for calibration and correction of pixel or column fixed pattern noise associated with other frames.

REFERENCES:
patent: 2002/0051229 (2002-05-01), Eguchi et al.
patent: 2006/0256215 (2006-11-01), Zhang et al.
patent: 2007/0076101 (2007-04-01), Baer

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