Video disc player having time base variations eliminated in both

Details Video disc player having time base variations eliminated in both Video disc player having time base variations eliminated in both

1981-05-05

1984-01-10

Hecker, Stuart N.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358325, 358326, H04N 9491

Patent

active

044255837

ABSTRACT:
A video disc player in which undesirable frequency variations in reproduced video and audio signals due to absence of the color burst signal during the vertical retrace time are eliminated. A first control unit actuates a tangential mirror driver unit in response to a phase difference produced by comparing a horizontal synchronizing signal from the reproduced video signal with a reference color subcarrier signal. The video signal is delayed by an electronically-controlled variable delay line the delay time of which is set on accordance with a phase difference between the color burst signal and a reference horizontal synchronizing signal.

REFERENCES:
patent: 3381086 (1968-04-01), De Moss et al.
patent: 3530258 (1970-09-01), Gregg et al.
patent: 3580991 (1971-05-01), Krause
patent: 3711641 (1973-01-01), Palmer
patent: 3934262 (1976-01-01), Snopko
patent: 3967311 (1976-06-01), Fuhrer
patent: 3996606 (1976-12-01), Pritchard
patent: 4198657 (1980-04-01), Kanamaru
patent: 4313129 (1982-01-01), Fukui

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