Automatic head height control apparatus

Details Automatic head height control apparatus Automatic head height control apparatus

1980-03-13

1982-12-28

Kilgore, Robert M.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360109, G11B 2110, G11B 556

Patent

active

043665152

ABSTRACT:
In a video tape recorder which employs a rotary magnetic head secured on a deflectable device, such as a bi-morph leaf, to dynamically perform head tracking during reproduction of previously recorded tracks regardless of the tape transport speed; the height of the magnetic head is detected during recording to produce a feedback control signal which electrically adjusts the height of the magnetic head by deforming the bi-morph leaf to overcome hysteresis deflection of the bi-morph leaf so that the magnetic head is returned to and maintained at a normal height during recording.

REFERENCES:
patent: 4099211 (1978-07-01), Hathaway
patent: 4106065 (1978-08-01), Ravizza
patent: 4165523 (1979-08-01), Hathaway
patent: 4167762 (1979-09-01), Hashizaki
patent: 4197564 (1980-04-01), Ravizza
patent: 4203140 (1980-05-01), Watanabe
patent: 4207601 (1980-06-01), Desai
patent: 4233637 (1980-11-01), Kubota
patent: 4255771 (1981-03-01), Kubota

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