Video mixing and/or keying system

Details Video mixing and/or keying system Video mixing and/or keying system

1975-08-05

1977-01-04

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

178DIG6, 358182, 358183, H04N 522

Patent

active

040014983

ABSTRACT:
A system for mixing and/or keying video signals includes a number of video signal processors each of which includes a charge-coupled device as a variable delay element to bring about phase coincidence among a plurality of video signals. The amplitude of the delayed video signal from the charge-coupled device is controlled, and the amplitude-controlled video signals are mixed.

REFERENCES:
patent: 3647965 (1972-03-01), Butler
patent: 3931638 (1976-01-01), Lentz

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