Access control apparatus and address translation method for disk

Details Access control apparatus and address translation method for disk Access control apparatus and address translation method for disk

1993-11-29

1995-01-31

Pascal, Robert J.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

360 51, 360 49, G11B 1722, G11B 509

Patent

active

053864026

ABSTRACT:
In a CDR-mode disk storage device, an HDC translates logical block addresses, generated by a host computer when the computer accesses the disk, to physical block addresses each consisting of a zone number, a head number, a track number, and a sector number. At this time, the HDC prepares a translation table which shows physical block addresses corresponding to logical block addresses. In the translation table, serial zone numbers 0-zn are set, serial head numbers 0-hn are set for each zone number, serial track numbers 0-tn are set for each head number, and serial sector numbers 0-sn are set for each track number. On the basis of the physical block addresses, the disk storage device can access sectors corresponding to a series of logical block addresses sequentially designated, without increasing the number of occasions of zone changing.

REFERENCES:
patent: 4894734 (1990-01-01), Fischler et al.
patent: 4999720 (1991-03-01), Wilson et al.
patent: 5087992 (1992-02-01), Dahandeh et al.
patent: 5193034 (1993-03-01), Tsuyoshi et al.
patent: 5276564 (1994-01-01), Hessing et al.

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