Circuit for flying height on demand

Details Circuit for flying height on demand Circuit for flying height on demand

2008-09-09

2008-09-09

Feild, Joseph (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

Reexamination Certificate

active

11387472

ABSTRACT:
A hard disk drive with a control circuit that controls a heating element in a head of the drive. The heating element is driven by a voltage. The control circuit varies the voltage during read and write operations of the drive. The voltages are varied to minimize fluctuations in the flying height of the drive during the write operations.

REFERENCES:
patent: 5991113 (1999-11-01), Meyer et al.
patent: 7023647 (2006-04-01), Bloodworth et al.
patent: 7088543 (2006-08-01), Satoh et al.
patent: 2003/0099054 (2003-05-01), Kamijima
patent: 2004/0027728 (2004-02-01), Coffey et al.
patent: 2006/0139789 (2006-06-01), Yang

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