Magnetic recording apparatus

Details Magnetic recording apparatus Magnetic recording apparatus

2006-06-06

2006-06-06

Hudspeth, David (Department: 2651)

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of the amplifier

Reexamination Certificate

active

07057839

ABSTRACT:
A magnetic recording apparatus has a head for recording information on a magnetic recording medium, a write current setting circuit for controlling a write current that is passed through the head, a fault detection circuit for detecting a fault in the head based on the result of comparison between head voltages appearing at both ends of the head and a reference voltage, and a reference voltage setting circuit for varying the reference voltage according to the write current. This configuration permits correct detection of faults in the head all the time irrespective of the write current or the supply voltage.

REFERENCES:
patent: 6429987 (2002-08-01), Cheng
patent: 6466388 (2002-10-01), Lacombe et al.
patent: 6775078 (2004-08-01), Jiang
patent: 6794880 (2004-09-01), Tucker

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