Recording apparatus and methods for a color picture/sound record

Details Recording apparatus and methods for a color picture/sound record Recording apparatus and methods for a color picture/sound record

1975-12-24

1977-01-25

Griffin, Robert L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 902

Patent

active

040054748

ABSTRACT:
Recording apparatus for use in the mastering of a color picture/sound disc includes a source of composite color video signals in which chrominance information appears as sideband components of a chrominance subcarrier interleaved with luminance signal components in an intermediate region of a band occupied by luminance signal components; means for frequency modulating a first carrier over a high frequency deviation range in accordance with composite video signal amplitude; a source of accompanying audio signals; means for frequency modulating a second carrier over a low frequency deviation range in accordance with the audio signal amplitude; means for combining the two modulator outputs, means for clipping the resultant signal; and SEM recorder apparatus responsive to the clipper output for exposing successive groove bottom regions of a disc master coated with electron sensitive material in a manner establishing, upon development, a desired groove bottom depression pattern.

REFERENCES:
patent: 3934263 (1976-01-01), Palmer
"Video Long-Playing Records," Wireless World, Oct. 1972, p. 474.
"Die Signal Verarbeitung bei der Bildplatte," Redlich and Dickopp, Funkschau, 1972, Heft 23, pp. 851-853.

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