Servo pattern forming method for floppy disk

Details Servo pattern forming method for floppy disk Servo pattern forming method for floppy disk

1997-08-28

2000-02-29

Faber, Alan

Dynamic magnetic information storage or retrieval

General recording or reproducing

Selective erase recording

360 66, 360 7708, 360 7814, 360 75, G11B 502

Patent

active

060316748

ABSTRACT:
A method of writing servo patterns to a floppy disk with use of a magnetic head having a head gap wider than the track pitch of the floppy disk, which method comprises writing a servo pattern to one track, thereafter moving the magnetic head by a predetermined distance in the width direction of the track to write a servo pattern, then at the time of writing servo patterns successively for a plurality of tracks in the same way as above, selecting appropriately a supply timing of write data and that of erase data to be fed to the magnetic head, and erasing in the next writing of a servo pattern a write portion of a servo pattern which deviated from the track width in the previous writing thereof.

REFERENCES:
patent: 4688118 (1987-08-01), Knowles et al.
patent: 4799115 (1989-01-01), Rogers et al.
patent: 4998075 (1991-03-01), Patton, III et al.
patent: 5012363 (1991-04-01), Mine et al.
patent: 5164863 (1992-11-01), Janz
Abstract of Japanese Patent No. 409223374, Aug. 26, 1997.

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