Lossless nonlinear analog gain controller in image sensor...

Details Lossless nonlinear analog gain controller in image sensor... Lossless nonlinear analog gain controller in image sensor...

2008-05-27

2008-05-27

Nguyen, Linh V. (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S169000, C341S128000, C341S129000

Reexamination Certificate

active

07379011

ABSTRACT:
An image sensor comprises an active pixel sensor (APS) array, a first analog-to-digital converter (ADC), and a ramp signal generator. The APS array has includes a plurality of pixels of arranged in a second order two-dimensional matrix, and wherein the APS array generates a reset signal and an image signal for each pixel of selected columns. The first ADC has includes correlated double sampling (CDS) circuits for each column of the APS array, and wherein the first ADC generates a digital code corresponding to the difference between the reset signal and the image signal using an output ramp signal that is applied to the CDS circuits for each column. The ramp generator generates the output ramp signal in which a low illumination portion and a high illumination portion have different slopes.

REFERENCES:
patent: 5920274 (1999-07-01), Gowda et al.
patent: 6271785 (2001-08-01), Martin et al.
patent: 6545624 (2003-04-01), Lee et al.
patent: 6670904 (2003-12-01), Yakovlev
patent: 6943719 (2005-09-01), Yun et al.
patent: 7075474 (2006-07-01), Yamagata et al.
patent: 7129883 (2006-10-01), Muramatsu et al.
patent: 7230558 (2007-06-01), Lim
patent: 7265329 (2007-09-01), Henderson et al.
patent: 2002/0113887 (2002-08-01), Iimura et al.
patent: 2005/0057389 (2005-03-01), Krymski
patent: 2007/0008206 (2007-01-01), Tooyama et al.
patent: 1 298 800 (2003-04-01), None

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