Sample video amplifier

Details Sample video amplifier Sample video amplifier

1983-04-13

1985-11-05

Murray, Richard

Facsimile and static presentation processing

Facsimile

Recording apparatus

H04N 314

Patent

active

045517592

ABSTRACT:
A video amplifier for a raw video signal permits increasing the gain of the ignal so that it stands out from background noise prior to processing. The amplifier uses a sample and hold circuit between two gain stages to permit the raw video signal to only be sampled at a preset rate. This type of device is especially suitable for charge coupled device video where sampling is desired after a predetermined integration time for the pixel elements of a CCD array. This processing permits low voltage level signals to be amplified relatively isolated from background noise and then processed after being amplified to a level significantly above processing noise. The final gain stage permits amplifying suitable for standard video monitors to use the signal.

REFERENCES:
patent: 3781574 (1973-12-01), White et al.
patent: 4189751 (1980-02-01), Nagumo
patent: 4254436 (1981-03-01), Harford
patent: 4274113 (1981-06-01), Ohba et al.
patent: 4283742 (1981-08-01), Izumita et al.
patent: 4287441 (1981-09-01), Smith
patent: 4363035 (1982-12-01), Lehmann

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