Control apparatus, storage apparatus, and computer product

Details Control apparatus, storage apparatus, and computer product Control apparatus, storage apparatus, and computer product

2007-01-31

2010-02-02

Olson, Jason C (Department: 2627)

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

C360S075000

Reexamination Certificate

active

07656599

ABSTRACT:
A rewrite determining unit of a hard disk apparatus acquires a servo signal that includes an offtrack amount corresponding to each servo frame from a position information memory, and determines whether a write fault has occurred based on the servo signal. If a write fault has occurred, the rewrite determining unit determines a rewrite sector count, and a write controller controls a hard disk controller so that rewriting is performed to correspond to the rewrite sector count determined by the rewrite determining unit.

REFERENCES:
patent: 6442715 (2002-08-01), Wilson
patent: 6975467 (2005-12-01), Lewkowicz et al.
patent: 7174478 (2007-02-01), Asano
patent: 05-020789 (1993-01-01), None
patent: 06-052636 (1994-02-01), None
patent: 2001-014606 (2001-01-01), None
patent: 2004-047023 (2004-02-01), None

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