Image sensor with correlated double sampling technique using...

Television – Camera – system and detail – Combined image signal generator and general image signal...

Reexamination Certificate

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Details

C348S308000, C250S208100, C341S172000

Reexamination Certificate

active

06864919

ABSTRACT:
An output signal of an image sensor pixel, which substantially avoids fixed pattern noise contributed by the readout circuitry, is provided. The apparatus, which is used to provide an output signal that is a function of the difference between two sample signals VS1and VS2, includes first and second capacitor elements that are coupled together at a common terminal. A reference voltage VREFis first applied to the capacitor elements, then a first sample signal VS1from the image sensor pixel is applied to the first capacitor element producing a charge that is transferred to the second capacitor element. A second sample signal VS2from the image sensor pixel is then applied to the first capacitor element producing a charge that is also transferred to the first capacitor element such that VO=VS2−VS1+VREF.

REFERENCES:
patent: 3715485 (1973-02-01), Weimer
patent: 3949162 (1976-04-01), Malueg
patent: 4155094 (1979-05-01), Ohba et al.
patent: 5796431 (1998-08-01), Yonemoto
patent: 5872470 (1999-02-01), Mallinson et al.
patent: 6025875 (2000-02-01), Vu et al.
patent: 6320616 (2001-11-01), Sauer
patent: 6421085 (2002-07-01), Xu
patent: 6433632 (2002-08-01), Nakamura et al.
patent: 6441852 (2002-08-01), Levine et al.
patent: 6697108 (2004-02-01), Chen et al.
patent: 6744394 (2004-06-01), Liu et al.
patent: 6784824 (2004-08-01), Quinn
patent: WO 9824092 (1998-06-01), None
patent: 9946929 (1999-09-01), None
patent: 0062530 (2000-10-01), None
Yonemoto et al.; “A Numerical Analysis of a CMOS Image Sensor with a Simple Fixed-Pattern-Noise-Reduction Technology”; May 2002; IEEE Transactions on Electron Devices; vol. 49, No. 5; 746-753.*
Huang et al.; “Reduced Nonlinear Distortion in Circuits with Correlated Double Sampling”; 1996; IEEE.

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