Head control apparatus, head control method, and magnetic...

Details Head control apparatus, head control method, and magnetic... Head control apparatus, head control method, and magnetic...

2009-02-24

2010-06-01

Sniezek, Andrew L (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S031000

Reexamination Certificate

active

07729080

ABSTRACT:
There is provided a head control apparatus that controls the flying height of a head with respect to a disk by controlling heater current supplied to a heater for head protrusion adjustment. The head control apparatus includes: an acquisition section that acquires flying height information which is information concerning a variation in the flying height of the head; a determination section that determines whether the flying height variation is caused by a variation in atmospheric pressure based on a measured temperature and the flying height information acquired by the acquisition section; and a control section that controls, in the case where the determination section has determined that the flying height variation is caused by a variation in atmospheric pressure, heater current based on control information corresponding to the flying height variation caused by the atmospheric pressure variation.

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