Signal processor for amplifying picture signals, and sampling an

Details Signal processor for amplifying picture signals, and sampling an Signal processor for amplifying picture signals, and sampling an

1996-06-25

2000-08-29

Ho, Tuan

Television

Camera, system and detail

Combined image signal generator and general image signal...

327552, 341122, H04N 5217

Patent

active

061116068

ABSTRACT:
A signal processor amplifies picture signals provided by an image sensor, samples the amplified picture signals and holds the samples of the amplified picture signals. The signal processor comprises a dual correlation sampling circuit, and a sample-and-hold circuit connected to the output part of the dual correlation sampling circuit. The dual correlation sampling circuit comprises an amplifying stage to which an input signal is given, a low-pass filter connected to the output part of the amplifying stage, a time constant changing switch to be closed to set the low-pass filter for a smaller time constant, and a switch driving means for closing the time constant changing switch after the completion of giving an input signal to the amplifying stage.

REFERENCES:
patent: 4599640 (1986-07-01), Dischert
patent: 4677490 (1987-06-01), Levine
patent: 4845382 (1989-07-01), Eouzan et al.
patent: 5463346 (1995-10-01), Brooks
patent: 5708376 (1998-01-01), Ikeda

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