Control unit, storage unit, and method for manufacturing...

Details Control unit, storage unit, and method for manufacturing... Control unit, storage unit, and method for manufacturing...

2008-04-22

2010-02-23

Tzeng, Fred (Department: 2627)

Dynamic magnetic information storage or retrieval

General recording or reproducing

Thermomagnetic recording or transducers

Reexamination Certificate

active

07667913

ABSTRACT:
A control unit adjusts spacing between a head with a heater and a storage medium of a storage unit by controlling the power of the heater. The control unit measures first values of touchdown heater power at a first temperature set as the temperature condition. And the control unit estimates second values of the touchdown heater power at a temperature other than the first temperature set on the measurement of the first values, on the basis of a conversion equation. And the control unit determines heater power setting values to adjust the spacing between the head and the storage medium, for each of the sub-areas, on the basis of the first values and the second values.

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