Correlated double sampling circuit

Details Correlated double sampling circuit Correlated double sampling circuit

2011-04-05

2011-04-05

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C327S130000, C327S131000

Reexamination Certificate

active

07919993

ABSTRACT:
A correlated double sampling circuit includes a first capacitor and a comparator. The first capacitor may be configured to receive a ramp signal via a first end. The comparator may be configured to receive the ramp signal and an output signal of a unit pixel circuit via a differential amplifier included in the comparator. The comparator may be also be configured to compare the output signal with the ramp signal and may be configured to directly receive the output signal of the unit pixel circuit at a first input terminal of the differential amplifier. A second input terminal of the differential amplifier is connected to a second end of the first capacitor.

REFERENCES:
patent: 2004/0041927 (2004-03-01), Cho et al.
patent: 2006/0274557 (2006-12-01), Ball et al.
patent: 10-2001-0013303 (2001-02-01), None
patent: 10-2005-0079729 (2005-08-01), None
patent: 10-2006-0093911 (2006-08-01), None

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