Disk drive and disk drive control method

Details Disk drive and disk drive control method Disk drive and disk drive control method

2006-12-21

2009-11-10

Olson, Jason C (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S294700

Reexamination Certificate

active

07616397

ABSTRACT:
Embodiments in accordance with the present invention improve the head characteristic and avoid collisions between a head element section and a recording disk. A hard disk drive according to an embodiment of the present invention performs TFC (Thermal Fly height Control) to adjust the clearance between the head element section and recording disk by means of thermal expansion. A head slider includes a TFC heater. The hard disk drive detects its acceleration and controls the TFC heater in accordance with the detected acceleration, thereby reducing the probability of collision between the head element section and recording disk. Further, the hard disk drive detects residual vibration prevailing after impact application. The heater turns back ON when the residual vibration becomes lower than a reference level.

REFERENCES:
patent: 4040103 (1977-08-01), White
patent: 5777815 (1998-07-01), Kasiraj et al.
patent: 5991113 (1999-11-01), Meyer et al.
patent: 6046877 (2000-04-01), Kelsic
patent: 6282038 (2001-08-01), Bonaccio et al.
patent: 6359746 (2002-03-01), Kakekado et al.
patent: 6798605 (2004-09-01), Kurita et al.
patent: 6927929 (2005-08-01), Gong et al.
patent: 7184246 (2007-02-01), Sasaki et al.
patent: 7372665 (2008-05-01), Stoev et al.
patent: 2003/0174430 (2003-09-01), Takahashi et al.
patent: 2004/0114268 (2004-06-01), Satoh et al.
patent: 1173691 (1998-02-01), None
patent: 05-020635 (1993-01-01), None
patent: 2005-004909 (2005-01-01), None

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