Method for reducing written-in runout during servo track...

Details Method for reducing written-in runout during servo track... Method for reducing written-in runout during servo track...

2005-05-17

2005-05-17

Tran, Sinh (Department: 2651)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S073030

Reexamination Certificate

active

06894861

ABSTRACT:
A method for reducing written-in runout of a disk drive writes a plurality of servo tracks onto a magnetic-storage portion of a disk that comprises a first radial band proximate the outer circumference of the disk, and a second radial band between the first radial band and the inner circumference of the disk. A first plurality of servo tracks is written to the storage medium in the first radial band at a first servo-writing spin rate. A second plurality of servo tracks is written to the storage medium in the second radial band at a second servo-writing spin rate that is different from the first servo-writing spin rate.

REFERENCES:
patent: 4514771 (1985-04-01), Stark et al.
patent: 5448429 (1995-09-01), Cribbs et al.
patent: 5506735 (1996-04-01), Okazaki
patent: 6310740 (2001-10-01), Dunbar et al.
patent: 6587293 (2003-07-01), Ding et al.
patent: 6741414 (2004-05-01), Boyd et al.

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