Video disc recording apparatus and methods

Details Video disc recording apparatus and methods Video disc recording apparatus and methods

1974-11-12

1976-01-20

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

178 67A, H04N 584, H04N 938

Patent

active

039342638

ABSTRACT:
Frequency modulated sound carrier waves and frequency modulated picture carrier waves are combined in an adder, and the sum is clipped to develop a recording signal input for an electron beam disc recorder. To reduce possible sound carrier interference in pictures reproduced from signals recovered during disc playback, sound carrier waves, in quadrature phase relation to those applied to the adder, are combined with composite video signals to form the modulating signal input to the picture carrier frequency modulator.

REFERENCES:
patent: 2858369 (1958-10-01), Kahn
patent: 3659041 (1972-04-01), Kitaoka
patent: 3775554 (1973-11-01), Hjortzberg
patent: 3849776 (1974-11-01), Swynford-Lain

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