Apparatus, and associated method, for protecting a magnetoresist

Details Apparatus, and associated method, for protecting a magnetoresist Apparatus, and associated method, for protecting a magnetoresist

1998-03-30

2000-05-30

Kim, W. Chris

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of biasing or erasing

360 25, G11B 503, G11B 502

Patent

active

06069761&

ABSTRACT:
Apparatus, and an associated method, protects against damage to a magnetoresistive sensor of a disk drive assembly, or other magnetic storage device, responsive to a thermal asperity event. Detection is made of the resistance of the magnetoresistive sensor. If the resistance increases, indicative of a temperature increase occurring as a result of a thermal asperity event, a full-sense current, or current of other appropriate magnitude is applied to the sensor, thereby to prevent alteration by the magnetic field of portions of the magnetoresistive sensor.

REFERENCES:
patent: 5523898 (1996-06-01), Jove et al.
patent: 5650887 (1997-07-01), Dovek et al.
patent: 5956197 (1999-09-01), Le et al.
patent: 5969523 (1999-10-01), Chung et al.
patent: 5978163 (1999-11-01), Cunningham

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