Controlling head flying height in a data storage device

Details Controlling head flying height in a data storage device Controlling head flying height in a data storage device

2007-09-18

2007-09-18

Wong, K. (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S025000, C360S031000

Reexamination Certificate

active

11217515

ABSTRACT:
Embodiments of the invention enable the flying of a slider to be lowered and increase recording density with a simple configuration in a magnetic disk apparatus. In one embodiment, a magnetic disk apparatus comprises a magnetic disk including tracks for recording data; a magnetic head slider disposed with a magnetic head that flies over the rotating magnetic disk and records data to, or plays back data from, the magnetic disk; and a control device that controls the operation of the apparatus. Slider flying height data that vary inside the tracks are prerecorded in the tracks of the magnetic disk. The control device controls the operation of the magnetic head slider with respect to the magnetic disk on the basis of the slider flying height data recorded in the tracks.

REFERENCES:
patent: 4777544 (1988-10-01), Brown et al.
patent: 5909330 (1999-06-01), Carlson et al.
patent: 6408677 (2002-06-01), Suzuki
patent: 6587301 (2003-07-01), Smith
patent: 6678102 (2004-01-01), Liikanen et al.
patent: 6785079 (2004-08-01), Brannon et al.
patent: 6987628 (2006-01-01), Moline et al.

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