Eccentricity control method for magnetic disk, recording...

Details Eccentricity control method for magnetic disk, recording... Eccentricity control method for magnetic disk, recording...

2006-03-14

2006-03-14

Hudspeth, David (Department: 2651)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S075000

Reexamination Certificate

active

07012778

ABSTRACT:
In the start up of the magnetic disk apparatus, the phase relation between servo information numbers recorded on the magnetic disk15in advance and the eccentricity of the magnetic disk is learned. In the positioning of the magnetic head, a signal generated by multiplying, by a weight coefficient, a sine wave or a cosine wave the phase the revolution frequency of the magnetic disk is fed forward as an eccentricity control amount, whereby the eccentricity is compensated.

REFERENCES:
patent: 5402280 (1995-03-01), Supino
patent: 5550685 (1996-08-01), Drouin
patent: 5886846 (1999-03-01), Pham et al.
patent: 6381292 (2002-04-01), Yamakoshi
patent: 2-246063 (1990-10-01), None
patent: 6-176514 (1994-06-01), None
patent: 7-50076 (1995-02-01), None
patent: 7-192413 (1995-07-01), None
patent: 10-208418 (1998-08-01), None
patent: 10-254852 (1998-09-01), None
patent: 11-39814 (1999-02-01), None

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