Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data verification
Patent
1990-09-21
1992-01-28
Canney, Vincent P.
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Data verification
360 39, G11B 509
Patent
active
050847899
ABSTRACT:
A parallel transfer type disk system comprising: a means for parallel dividing input digital data; a plurality of magnetic disks for recording each of said divided digital data, said magnetic disks including a plurality of magnetic heads for allocating said divided digital data to a plurality of tracks on a plurality of magnetic recording disks for simultaneous recording of the data, and a magnetic head driving means including a head selection means for driving said magnetic heads; a means for detecting defective track among said plurality of tracks from each of track signals; and a means for temporarily recording digital data allocated to a defective track and then recording the data on a predetermined track, or for simultaneously recording digital data allocated to said defective track and digital data allocated to tracks other than said defective track on a predetermined group of replacement tracks on said plurality of recording media, when existence of said defective track has been detected by said detecting means among a group of tracks on which said parallel divided digital data are to be recorded.
REFERENCES:
patent: 4498146 (1985-02-01), Martinez
patent: 4706136 (1987-11-01), Wentzel et al.
Kakuta Hitoshi
Kamo Yoshihisa
Canney Vincent P.
Hitachi , Ltd.
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