Magnetic disk drive with servo bursts and alternating...

Details Magnetic disk drive with servo bursts and alternating... Magnetic disk drive with servo bursts and alternating...

2007-06-12

2007-06-12

Korzuch, William (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S048000

Reexamination Certificate

active

11070775

ABSTRACT:
A disk drive includes a data storage disk that has servo information thereon which includes first servo bursts and second servo bursts. The first servo bursts are at least substantially radially aligned with each other, and have low frequency regions therebetween. Adjacent ones of the low frequency regions between the first servo bursts have magnetic polarities that are opposite to one another. The second servo bursts are at least substantially radially aligned with each other and have low frequency regions therebetween. The first and second servo bursts are in a single servo region.

REFERENCES:
patent: 5923492 (1999-07-01), Liikanen
patent: 6025970 (2000-02-01), Cheung
patent: 6157511 (2000-12-01), Liikanen
patent: 6256160 (2001-07-01), Liikanen et al.
patent: 6262859 (2001-07-01), Cho
patent: 6433950 (2002-08-01), Liikanen
patent: 7068461 (2006-06-01), Chue et al.
patent: 2004/0252394 (2004-12-01), Hamaguchi et al.

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