Additional memories storing substantial information

Details Additional memories storing substantial information Additional memories storing substantial information

1985-02-12

1988-06-28

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Address coding

360 721, G11B 509, G11B 1518

Patent

active

047543450

ABSTRACT:
A storage method for a storage device used in a telecommunication system, in particular a telephone exchange system provides that a memory, e.g. a magnetic disk memory, is formatted with a plurality of storage elements such as storage sectors of standard storage volume in which, by a selectable number of storage elements, storage sections of specified size are formed by storage elements which are co-related in respect of their drive and can be driven individually successively by addresses. Reserve storage sections are provided on the magnetic disk and are protected from direct access. In the event of a defect in a storage element, a reserve storage element is assigned thereto in that the drive address of the reserve storage element is stored for the defective storage element, as a result of which, during the individual successive drive of the storage elements of a storage section containing a defective storage element, when the latter is reached, the assigned reserve storage element is included in the drive cycle and is subjected to a write/read/erasure process in place of the defective storage element.

REFERENCES:
patent: 3863228 (1975-01-01), Taylor
patent: 4227220 (1980-10-01), Brown et al.
patent: 4498146 (1985-02-01), Martinez

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