Disk provided with servo patterns and method of recording servo

Details Disk provided with servo patterns and method of recording servo Disk provided with servo patterns and method of recording servo

1998-09-15

2000-11-28

Sniezek, Andrew L.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data in specific format

360 7708, 360 75, G11B 509

Patent

active

061543306

ABSTRACT:
Each of servo patterns comprises servo information, an A burst signal and a B burst signal. The servo patterns are recorded at a smaller track pitch Tp in a data zone of a disk, and are recorded in a first nondata zone at a greater track pitch Tp1 greater than the smaller track pitch Tp. Therefore a tracking servo control operation is effective even if the magnetic head of a disk drive moves into the nondata zone. Since the servo patterns are recorded in the nondata zone at the greater pitch Tp1, the time necessary for recording the servo patterns can be reduced.

REFERENCES:
patent: 5801897 (1998-09-01), Kanda et al.
patent: 5867337 (1999-02-01), Shimomura
IBM Technical Disclosure Bulletin, vol. 31, No. 3, dated Aug. 1988, pp. 265-266.

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