Video disc player having auxiliary vertical synchronizing genera

Details Video disc player having auxiliary vertical synchronizing genera Video disc player having auxiliary vertical synchronizing genera

1981-08-27

1983-06-07

Psitos, Aristotelis M.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358336, 360 371, H04N 576, H04N 594

Patent

active

043874070

ABSTRACT:
An oscillator produces a signal having a frequency equal to a multiple of the turntable speed of a video disc player. A divider, periodically reset by vertical timing signals produced by the player when in a "play" operating mode, divides the oscillator signal and continuously produces a vertical reference signal equal in phase and frequency to a vertical timing component of the player video output signal. Synchronism is maintained between the player and a TV receiver when the player is in a "pause" operating mode (when the video output signal is squelched) by supplying the reference signal to the receiver, thereby preventing undesirable "roll" of the image produced by the receiver when the player is returned to the "play" operating mode.

REFERENCES:
patent: 3573359 (1971-04-01), Guisinger
patent: 4286290 (1981-08-01), Pyles et al.

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