Video disc encoding and decoding system providing intra-field tr

Details Video disc encoding and decoding system providing intra-field tr Video disc encoding and decoding system providing intra-field tr

1984-01-03

1985-10-08

McElheny, Jr., Donald

Facsimile and static presentation processing

Facsimile

Recording apparatus

358907, 369 43, 369 50, 369 59, H04N 5781

Patent

active

045463891

ABSTRACT:
Video disc track numbers are conveyed during each video line by means of a quadrature phase shift keyed data carrier recorded along with the picture and sound carriers on a video disc. Upon playback, the data sequence is processed to identify tracking errors occurring within each video field to thereby enable immediate correction of disc tracking errors on a line-by-line basis thus minimizing picture and sound interruption caused by intra-field tracking errors.

REFERENCES:
patent: 4455635 (1984-06-01), Dieterich
patent: 4488278 (1984-12-01), Dieterich

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