Tracking control for a video disc player

Details Tracking control for a video disc player Tracking control for a video disc player

1979-04-26

1981-02-10

Shepperd, John W.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Having power driven transducer assembly

G11B 2104

Patent

active

042497469

ABSTRACT:
A linear tracking control system for a video disc player comprising a playback transducer drive motor in addition to a turntable drive motor. A high voltage forward signal is applied to the playback transducer drive motor for performing a fast forward movement of the playback transducer. A high voltage reverse signal having a polarity opposite to the forward signal is applied to the playback transducer drive motor for achieving the fast reverse movement. A playback tracking control signal is intermittently applied to the playback transducer drive motor upon every four rounds of the turntable in order to intermittently advance the playback transducer in the playback operation.

REFERENCES:
patent: 1933457 (1933-10-01), Sykes
patent: 3363908 (1968-01-01), Miner et al.
patent: 3993315 (1976-11-01), Hansen et al.
patent: 3993316 (1976-11-01), Fairbanks
patent: 4040634 (1977-08-01), Leedom

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