Magnetic head positioning device and method

Details Magnetic head positioning device and method Magnetic head positioning device and method

1992-04-10

1994-05-10

Casaregola, Louis J.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7708, G11B 5584

Patent

active

053113802

ABSTRACT:
A servo track recorded on a magnetic tape is traced by a pair of servo track reproduce heads. The output of the pair of servo track reproduce heads are subjected to a subtracting process by a subtractor. A pulse signal is provided to a stepping motor according to the output of the subtractor. The stepping motor provides a rotation in a positive direction or a negative direction according to the applied pulse. The rotation of the stepping motor is translated to a magnetic head via a moving mechanism whereby the position of the magnetic head is adjusted along the width direction of the magnetic tape to trace properly the data track on the magnetic tape. A closed-loop control system is implemented for the magnetic head to realize tracking control of high precision.

REFERENCES:
patent: 4007493 (1977-02-01), Behr et al.
patent: 4347534 (1982-08-01), Kimura
patent: 4796125 (1989-01-01), Karsh
patent: 4953161 (1990-08-01), Toyama
Abstract of Japanese Application No. JP-A-57 033 455.

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