Random access flexible disk memory

Details Random access flexible disk memory Random access flexible disk memory

1980-05-07

1982-09-07

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360 99, 360122, 360135, G11B 5012, G11B 2102

Patent

active

043487050

ABSTRACT:
There is disclosed a closely arranged file of flexible rotating disk memory elements in which a disk may be randomly accessed with minimum error and relatively rapid access time. This disk system utilizes different diameter disks which are arranged in an ascending order in a sub-stack, are rotated at a relatively slow speed. A plurality of the sub-stacks, wherein there is a correspondence between the same diameter disk of each stack, are utilized to provide for a large memory capacity. Microprocessing techniques are utilized for sub-stack and disk selection.

REFERENCES:
patent: 3618055 (1971-11-01), Van Acker et al.
patent: 3703713 (1972-11-01), Pohm et al.
patent: 3931645 (1976-01-01), Dodd et al.
IEEE Transaction on Magnetics, Sep. 1972, pp. 574-576, "Proposal for a 10.sup.12 Bit Flexible Disk Pack Memory" by Pohm et al.

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