Magnetic disk recorder

Details Magnetic disk recorder Magnetic disk recorder

1992-06-11

1995-01-17

Hajec, Donald

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of the amplifier

G11B 502

Patent

active

053830652

ABSTRACT:
A magnetic disk includes a servo zone for reproducing signals for control therefrom and a data zone for recording and reproducing a data signal, wherein the servo zone and the data zone are alternately and repeatedly provided on each of annular tracks, and at least a header portion of each of the servo zones is constituted by a recognizable data. A magnetic disk recorder for recording a signal on and reproducing a signal from the thus constructed magnetic disk includes a recording amplifier for supplying a signal to a magnetic head to thereby record the signal on the magnetic disk, and a unit for, upon turning off an operation of the recording amplifier, applying to the recording amplifier a current for generating a magnetic field from the magnetic head directed to the same direction as a magnetized direction of a predetermined bit of a header portion of the servo zone.

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patent: 5268803 (1993-12-01), Sugita et al.
patent: 5270877 (1993-12-01), Fukushima et al.

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