Data storage device, data write method, and program

Details Data storage device, data write method, and program Data storage device, data write method, and program

2006-05-02

2006-05-02

Hudspeth, David (Department: 2651)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

C360S068000

Reexamination Certificate

active

07038870

ABSTRACT:
A data storage device, data write method, and program to avoid extra power consumption and suppress a write error that may result from voltage variations. To write data onto a magnetic disk, a write circuit generates a write current that is to be supplied to a write head. The write circuit operates on a positive power supply voltage provided by a host computer, and on a negative power supply voltage generated by a programmable DC—DC converter mounted on a hard disk drive's card. The magnitude of the negative power supply voltage generated by the programmable DC—DC converter is varied in accordance with the temperature surrounding the magnetic disk. Further, the magnitude of the negative power supply voltage generated by the programmable DC—DC converter is varied in accordance with the magnitude of the positive power supply voltage supplied from the host computer.

REFERENCES:
patent: 5831783 (1998-11-01), Shinohara
patent: 6188531 (2001-02-01), Chang et al.
patent: 6788483 (2004-09-01), Ferris et al.
patent: 05-258215 (1993-10-01), None

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