Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2006-09-12
2006-09-12
Wong, K. (Department: 2651)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
C360S077040
Reexamination Certificate
active
07106542
ABSTRACT:
A method and apparatus for determining embedded runout correction values when self-servo writing or partial self-servo writing is disclosed. In one embodiment, a disk surface, which has servo information written thereon, is provided. The servo information is grouped into1xservo sectors and2xservo sectors, and the1xservo sectors and the2xservo sectors form a plurality of tracks. A read head servos on the1xservo sectors associated with a track. Both position error signals due to repeatable runout for the1xservo sectors and information related to position error signals due to repeatable runout for the2xservo sectors are determined, while servoing on the1xservo sectors. Embedded runout correction values for the1xservo sectors and the2xservo sectors are calculated.
REFERENCES:
patent: 4412165 (1983-10-01), Case et al.
patent: 6061200 (2000-05-01), Shepherd et al.
patent: 6115203 (2000-09-01), Ho et al.
patent: 6469853 (2002-10-01), Satoh
patent: 6519107 (2003-02-01), Ehrlich et al.
patent: 6522494 (2003-02-01), Magee
patent: 6549362 (2003-04-01), Melrose et al.
patent: 6714376 (2004-03-01), Brunnett et al.
Tung, et al., U.S. Appl. No. 10/293,904, filed Nov. 12, 2002, “Method and Apparatus for Partial Self-Servo Writing Using Servo Wedge Propagation”.
Brunnett Don
Guo Lin
Purkett John
Sun Yu
Tan Georgie
Hansra Tejpal S.
Maxtor Corporation
Wong K.
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