Video disc and method of playback

Details Video disc and method of playback Video disc and method of playback

1974-07-02

1976-01-20

Murray, Richard

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 576

Patent

active

039342620

ABSTRACT:
An optical video disc has a multi-turn spiral track which stores a frequency modulated carrier modulated with program information in accordance with NTSC format. The recording is further characterized by the fact that the phase of the chroma subcarrier at the start of one convolution of the record track is substantially the same as that of the end of the convolution. In the playback process, the disc is rotated at a speed such that the chroma subcarrier is integrally related to the frequency of disc rotation.

REFERENCES:
patent: 3663743 (1972-05-01), Dann
patent: 3761604 (1973-09-01), Ozawa et al.
patent: 3796825 (1974-03-01), Redlich et al.
patent: 3852520 (1974-12-01), Bruch

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