Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2006-12-07
2009-02-10
Nguyen, Hoa T (Department: 2627)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
Reexamination Certificate
active
07489468
ABSTRACT:
According to one embodiment, a disk drive is provided which corrects already existing offset information according to a variation of a disk runout amount caused by an occurrence of a disk shift. The disk drive effects a head position adjustment at a head positioning control time with the use of offset information stored in a memory. A CPU measures a variation in the disk runout amount and phase caused by an occurrence of a disk shift resulting from an external shock involved and updates the existing offset information with a correction offset information based on a result of measurement.
REFERENCES:
patent: 5444371 (1995-08-01), Tomisaki et al.
patent: 5615191 (1997-03-01), Takeda et al.
patent: 5745455 (1998-04-01), Takeda et al.
patent: 5761165 (1998-06-01), Takeda et al.
patent: 5905705 (1999-05-01), Takeda et al.
patent: 5923491 (1999-07-01), Kisaka et al.
patent: 6236527 (2001-05-01), Uchiike et al.
patent: 6650491 (2003-11-01), Suzuki et al.
patent: 6687078 (2004-02-01), Kim
patent: 6760183 (2004-07-01), Kusumoto
patent: 6894862 (2005-05-01), Kusumoto
patent: 7046477 (2006-05-01), Shibata
patent: 7057844 (2006-06-01), Sakai et al.
patent: 7075747 (2006-07-01), Takaishi
patent: 7193808 (2007-03-01), Takaishi
patent: 7221533 (2007-05-01), Iwashiro et al.
patent: 7333287 (2008-02-01), Hara
patent: 2006/0098330 (2006-05-01), Takaishi
patent: 02-282981 (1990-11-01), None
patent: 06-259904 (1994-09-01), None
patent: 06-275034 (1994-09-01), None
patent: 2005-216378 (2005-08-01), None
Ohinata Yusuke
Osafune Koji
Sakai Yuji
Yatsu Masahide
Habermehl James L
Kabushiki Kaisha Toshiba
Nguyen Hoa T
Pillsbury Winthrop Shaw & Pittman LLP
LandOfFree
Method and apparatus for head positioning control in a disk... 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 head positioning control in a disk..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for head positioning control in a disk... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4068721