Magnetic disk drive capable of refreshing data written to...

Details Magnetic disk drive capable of refreshing data written to... Magnetic disk drive capable of refreshing data written to...

2011-01-11

2011-01-11

Chaudry, M. Mujtaba K (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C714S770000

Reexamination Certificate

active

07870460

ABSTRACT:
According to one embodiment, the controller controls a data refresh operation. The data refresh operation comprises a refresh-data read operation of reading L blocks of data by a head from a track to be refreshed on a disk, a data backup-write operation of writing the read data by the head to a backup-track on the disk, and a refresh-write operation of writing the read data by the head to the track to be refreshed after the backup-write operation. The controller sets the number L of blocks to a value that satisfies conditions for completing the backup-write operation and the refresh-write operation within a time corresponding to N revolutions of the disk from completion of the refresh-data read operation.

REFERENCES:
patent: 5210866 (1993-05-01), Milligan et al.
patent: 5452429 (1995-09-01), Fuoco et al.
patent: 6442726 (2002-08-01), Knefel
patent: 6697976 (2004-02-01), Satoh et al.
patent: 6715116 (2004-03-01), Lester et al.
patent: 6938180 (2005-08-01), Dysert et al.
patent: 7051232 (2006-05-01), Wu et al.
patent: 2001/0030895 (2001-10-01), Li
patent: 2004/0078640 (2004-04-01), Wu et al.
patent: 2006/0029230 (2006-02-01), Kihara et al.
patent: 2006/0095381 (2006-05-01), Yokota et al.
patent: 2007/0128899 (2007-06-01), Mayer
patent: 2009/0252477 (2009-10-01), Yokota et al.
patent: 04-137032 (1992-05-01), None
patent: 10-092116 (1998-04-01), None
patent: 2001-110004 (2001-04-01), None
patent: 2001-118343 (2001-04-01), None
patent: 2002-100126 (2002-04-01), None
patent: 2004-273060 (2004-09-01), None
patent: 2005-267702 (2005-09-01), None
patent: 2008-140459 (2008-06-01), None
Japanese Office Action dated Jan. 7, 2010, Japanese Patent Application No. JP-2008-334882.

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