Dynamic magnetic information storage or retrieval – General recording or reproducing – Specifics of biasing or erasing
Reexamination Certificate
2005-12-13
2005-12-13
Hudspeth, David (Department: 2651)
Dynamic magnetic information storage or retrieval
General recording or reproducing
Specifics of biasing or erasing
C360S051000, C360S046000, C360S055000, C360S075000
Reexamination Certificate
active
06975474
ABSTRACT:
A disk drive is disclosed which has a facility to perform a pinning reset operation on a GMR read element included in a head if a read retry operation fails to achieve recovery from a read error. When a bias and write currents are supplied to the head, a CPU of the disk drive determines an optimum bias and write currents on the basis of a temperature measured value of the GMR read element.
REFERENCES:
patent: 5650887 (1997-07-01), Dovek et al.
patent: 5831782 (1998-11-01), Kohno et al.
patent: 5969896 (1999-10-01), Nakamoto et al.
patent: 6067200 (2000-05-01), Ohba et al.
patent: 6128160 (2000-10-01), Yamamoto
patent: 6324029 (2001-11-01), Matsubara et al.
patent: 6490115 (2002-12-01), Suzuki et al.
patent: 6522134 (2003-02-01), Gill
patent: 2002/0118475 (2002-08-01), Ng et al.
patent: 2003/0117737 (2003-06-01), Jang et al.
patent: 2004/0047063 (2004-03-01), Lum et al.
patent: 10-49837 (1998-02-01), None
patent: 11-191201 (1999-07-01), None
patent: 2001-93104 (2001-04-01), None
Hudspeth David
Kabushiki Kaisha Toshiba
Mercedes Dismery
Pillsbury Winthrop Shaw & Pittman LLP
LandOfFree
Method and apparatus for read error recovery in a disk drive... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for read error recovery in a disk drive..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for read error recovery in a disk drive... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3502417