Method of self-servo writing in a disk drive using a spiral...

Details Method of self-servo writing in a disk drive using a spiral... Method of self-servo writing in a disk drive using a spiral...

2006-08-08

2006-08-08

Young, Wayne (Department: 2651)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

C360S048000, C360S075000, C360S077070

Reexamination Certificate

active

07088533

ABSTRACT:
A disk drive includes a head and a disk, spiral patterns are located on the disk, and the disk drive self-writes servo patterns on the disk using the spiral patterns as a reference for servoing the head. In an embodiment, the disk drive uses preliminary servo patterns to determine repeatable runout of the spiral patterns. In another embodiment, the disk drive reads each spiral pattern with multiple timing windows.

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patent: 6738205 (2004-05-01), Moran et al.
patent: 2002/0030920 (2002-03-01), Min et al.

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