Magnetic disk drive with head retraction control

Details Magnetic disk drive with head retraction control Magnetic disk drive with head retraction control

2006-10-18

2008-09-23

Tzeng, Fred (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

Reexamination Certificate

active

07428119

ABSTRACT:
Embodiments of the invention improve utility of a magnetic disk drive in which a head is retracted if the magnetic disk drive is in a dropping state. In one embodiment, an HDC/MPU provided in a magnetic disk drive judges whether the magnetic disk drive is in a dropping state based on an output from an acceleration sensor which may detect an acceleration and performs a retraction operation of a head. After the HDC/MPU judges that a drop is occurring, the HDC/MPU detects whether the drop judgment is incorrect according to whether a shock sensor detects a shock occurrence and changes the drop judgment condition based on a detection history of detected incorrect judgments.

REFERENCES:
patent: RE35269 (1996-06-01), Comerford
patent: 5777815 (1998-07-01), Kasiraj et al.
patent: 6109101 (2000-08-01), Iwabuchi et al.
patent: 6754027 (2004-06-01), Hirano et al.
patent: 6771449 (2004-08-01), Ito et al.
patent: 6975476 (2005-12-01), Berding
patent: 6995939 (2006-02-01), Ito et al.
patent: 7142385 (2006-11-01), Shimotono et al.
patent: 7154692 (2006-12-01), Ogawa et al.
patent: 7190540 (2007-03-01), Matsumoto
patent: 7222535 (2007-05-01), Shoji
patent: 2002/0002773 (2002-01-01), Satoh et al.
patent: 2003/0067705 (2003-04-01), Ishiyama et al.
patent: 2004/0125493 (2004-07-01), Shimotono et al.
patent: 2006/0139807 (2006-06-01), Shimotono et al.
patent: 04-152268 (1992-05-01), None
patent: 06-275002 (1994-09-01), None
patent: 08-315498 (1996-11-01), None
patent: 2003-263240 (2003-09-01), None
patent: 2003-263853 (2003-09-01), None
patent: 2004-355775 (2004-12-01), None

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