Excavating
Patent
1991-07-02
1994-08-16
Atkinson, Charles E.
Excavating
360 47, 360 53, G06F 1100, G11B 713
Patent
active
053393198
ABSTRACT:
In a rotary type storage apparatus and a control method thereof, a plurality of concentric or spiral information tracks are set and also each of the plural information tracks is subdivided into a plurality of sectors along a circumferential direction, which constitute a plurality of information recording planes. Also, in this apparatus and method, there are provided a plurality of read/write heads employed at each of the information recording planes and accessible to the information tracks, and also a head drive mechanism for positioning these plural read/write heads to the information tracks. At least one of the plural information recording planes corresponds to such a recording plane where a substitution information track has been set, on which a substitution sector corresponding to a failed sector present at another information recording plane is recorded.
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Fukuda Yasushi
Isono Soichi
Kaku Toshimitsu
Kizaki Kunihiko
Komatsu Hitoshi
Atkinson Charles E.
Hitachi , Ltd.
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