Video switcher

Details Video switcher Video switcher

1991-12-16

1993-11-23

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358181, H04N 718

Patent

active

052649296

ABSTRACT:
A video signal switching apparatus having a change-over switch for selectively outputting video signals supplied from a plurality of video signal sources, wherein when a first switching mode is designated, then a plurality of video signals supplied from a plurality of video signal sources to first and second input terminal groups are sequentially output in accordance with a predetermined output order and when a second switching mode is designated, then video signals supplied from the plurality of video signal sources to the first input terminal group are sequentially output in a predetermined output order and simultaneously video signal supplied from the plurality of video signal sources to the second input terminal group are sequentially output in a predetermined output order.

REFERENCES:
patent: 3898644 (1975-08-01), Baxter
patent: 4218709 (1980-08-01), Baxter et al.
patent: 4511886 (1985-04-01), Rodriguez
patent: 4700230 (1987-10-01), Pshtissky et al.
patent: 4814869 (1989-03-01), Oliver, Jr.
patent: 4943864 (1990-07-01), Elberbaum
patent: 4992866 (1991-02-01), Morgan
Bose, Keith W. "Video Security Systems" Butterworth Publishers 1982 pp. 105-121.

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