Data management method and system for random access electron bea

Details Data management method and system for random access electron bea Data management method and system for random access electron bea

1976-05-25

1978-10-24

Nusbaum, Mark E.

Boots, shoes, and leggings

365237, 365217, G06F 1306, G06F 910, G11C 700

Patent

active

041225309

ABSTRACT:
A data recording and readback subsystem for digital computer systems employing random access electron beam memories having an electron beam write/read apparatus for recording data to be stored on a recording member that is subject to fatigue in the eventuality of excessive write/read storage operations at any given physical location on the recording member. The improved method and apparatus for data management comprising systematically permuting the physical location of data stored on the recording member, recording each permutation of the data, deriving signals representative of the number of permutation operations, and combining programmer initiated requests from the computer system central processing unit for data stored in the electron beam memory with the signals representative of the number of permutations to derive an actual physical address signal for application to the electron beam memory for recovery of the requested data.

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patent: 3789372 (1974-01-01), Lejon
patent: 3902163 (1975-08-01), Amdahl et al.

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