Registers – Records – Magnetic
Patent
1977-03-23
1980-12-16
Kilgore, Robert M.
Registers
Records
Magnetic
360 2, 360 56, 360131, G06K 1906, G11B 502, G11B 574
Patent
active
042399599
ABSTRACT:
A uniformly distributed magnetic recording medium is carried on or in an initially fluidizable support. During or after magnetically writing information upon the medium, the support is changed to a fluidized state, sufficient to permit some physical translational movement of the medium in localized areas corresponding in pattern to characteristic magnetic non-uniformities caused in medium by the magnetic writing. The support is then set or otherwise converted to a state in which such movement is no longer possible. Thereafter, even if the medium is degaussed, the now set non-uniformities in physical distribution of the recording medium, will permit the information that had been magnetically written, to continue to be read e.g. by magnetic analysis of the medium.
REFERENCES:
patent: 3171106 (1965-02-01), Lemmond
patent: 3566356 (1971-02-01), Holm
patent: 3788617 (1974-01-01), Barney
patent: 3878367 (1975-04-01), Fayling
patent: 3883892 (1975-05-01), Kneller
patent: 3927393 (1975-12-01), Fayling
patent: 3986205 (1976-10-01), Fayling
patent: 3998160 (1976-12-01), Pearce
patent: 4023204 (1977-05-01), Lee
General Kinetics Incorporated
Kilgore Robert M.
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