Magnetic video head position control

Details Magnetic video head position control Magnetic video head position control

1982-04-02

1984-05-29

Stellar, George G.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360109, G11B 552, G11B 2100

Patent

active

044518595

ABSTRACT:
A positionable magnetic head may be used in the record mode to produce video tape recordings in industry standard moving record-moving head format. In the record mode a constant control potential is applied to the positionable magnetic head so that is position is held fixed and the applied voltage is continuously monitored. Should the applied voltage vary from a permissible level a warning indication of a possible non-standard recording condition is produced or a feedback control system corrects the applied voltage. A separate fixed record head is no longer required since the reproduce head may now be used for the record head also.

REFERENCES:
patent: 3614579 (1971-10-01), Fulton
patent: 4165521 (1979-08-01), Watanabe
patent: 4169276 (1979-09-01), Rodal
patent: 4172265 (1979-10-01), Sakamoto et al.
patent: 4203140 (1980-05-01), Watanabe
patent: 4223358 (1980-09-01), Kubota et al.
patent: 4395741 (1983-07-01), Kobayashi et al.

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