Magnetic recording device

Details Magnetic recording device Magnetic recording device

1998-06-11

2000-10-31

Sniezek, Andrew L.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

360 68, G11B 509

Patent

active

061411620

ABSTRACT:
A write operation to a magnetic recording medium (10) is performed by supplying a predetermined write current to a write head (1) from an R/W signal processing portion (2) through a head composite signal processing portion (3), and a rewrite operation is performed by supplying a rewrite current having a value different from that of the predetermined write current to the magnetic head (1) by supplying a write current having a value different from the predetermined write current under a control of a hard disk controller (6) when an abnormality is detected by a head abnormality detection circuit (5) in the write operation with the predetermined write current. When an abnormality is further detected by the head abnormality detection circuit (5), the data write is judged as abnormal.

REFERENCES:
patent: 5434717 (1995-07-01), Yoshinaga et al.
patent: 5600500 (1997-02-01), Madsen et al.
patent: 5808820 (1998-09-01), Iwama
English translation of Japanese Office Action dated Feb. 23, Hei 11.

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