Magnetic disk having efficiently stored WRRO compensation...

Details Magnetic disk having efficiently stored WRRO compensation... Magnetic disk having efficiently stored WRRO compensation...

2006-03-30

2009-08-25

Feild, Joseph H (Department: 2627)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data in specific format

C360S077080

Reexamination Certificate

active

07580212

ABSTRACT:
The present invention may be embodied in a magnetic disk, of a disk drive, having eight-bit fields storing wedge repeatable runout (WRRO) compensation values and redundancy information. The WRRO compensation value of each field includes a six-bit binary value of which five bits represent a compensation magnitude and one bit represents a sign bit indicating a compensation direction. The redundancy information of each field has a first bit based on the sign bit.

REFERENCES:
patent: 6493173 (2002-12-01), Kim et al.
patent: 6671119 (2003-12-01), Baumann et al.
patent: 6912099 (2005-06-01), Annampedu et al.
patent: 6972922 (2005-12-01), Subrahmanyam et al.
patent: 7027256 (2006-04-01), Subrahmanyam et al.
patent: 7193798 (2007-03-01), Byrd et al.

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