Disk drive apparatus and read error recovery procedure therein

Details Disk drive apparatus and read error recovery procedure therein Disk drive apparatus and read error recovery procedure therein

1996-07-08

1999-02-16

Hindi, Nabil

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 25, G11B 558

Patent

active

058726713

ABSTRACT:
When a sharp change in signal judged due to thermal asperities has appeared, a disk drive apparatus according to the present invention repeats the unidirectional seek operation in a region centered on the belonging cylinder position of the track in which the read error has occurred as one data recovery operation, then scrubs and removes the thermal asperities by putting the component surface around the MR head into positive contact with the asperities, thereby eliminating the fundamental cause of a read error caused by thermal asperities.

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patent: 5327311 (1994-07-01), Ananth et al.
patent: 5461521 (1995-10-01), Ito et al.
patent: 5490025 (1996-02-01), Dorius et al.
patent: 5527110 (1996-06-01), Abraham et al.
patent: 5537034 (1996-07-01), Lewis
patent: 5612830 (1997-03-01), Gregory et al.
patent: 5612839 (1997-03-01), Jacques
patent: 5696643 (1997-12-01), Tsuwako et al.
Webster's II New Riverside University Dictionary, p. 332, 1994.

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