Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data verification
Patent
1998-03-05
2000-09-12
Kim, W. Chris
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Data verification
360 31, 369 53, G11B 509, G11B 2736, G11B 390
Patent
active
061186082
ABSTRACT:
A disk drive unit and an error recovery method for the disk drive unit which can reduce processing time for ERP in resetting, thereby shortening response time to the reset is described. A normal error recovery procedure is executed if there is no reset request when a write error occurs, but if there is a reset request pending, a data record in which a write error occurs is registered as a defective position (e.g. sector) and an alternate (spare) position is assigned to accelerate the time when the drive can respond to the reset instruction. Data records with alternate positions assigned as a part of the reset activity are specially marked so that alternate position assignment can be undone as soon as is appropriate, for example, when the record is next read or written.
REFERENCES:
patent: 5721816 (1998-02-01), Kusbel et al.
Kakihara Toshio
Kanamaru Atsushi
Satoh Masahiko
Satoh Takumi
International Business Machines - Corporation
Kim W. Chris
Knight G. Marlin
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