Static information storage and retrieval – Magnetic bubbles – Guide structure
Patent
1977-10-05
1979-08-07
Moffitt, James W.
Static information storage and retrieval
Magnetic bubbles
Guide structure
365 15, 365 29, 365 12, G11C 1908
Patent
active
041640292
ABSTRACT:
A magnetic bubble storage system and a method for making it using only two masking steps, one of which is critical. In a preferred embodiment, the storage regions are comprised of ion implanted propagation elements which can be contiguous with one another. The functions of write, read, storage, transfer between storage elements in different shift registers, and annihilation are provided by the method in which the same mask is used to define ion implanted regions and for formation of conductor metallurgy. Permalloy bridges over ion implanted regions are used to provide transfer of information between one storage element and another. In a preferred embodiment, NiFe is used for sensing, annihilation, and transfer of information, while the storage registers are comprised of ion implanted regions defining contiguous propagation elements of generally circular geometry.
REFERENCES:
patent: 3618054 (1971-11-01), Bonyhard et al.
patent: 3691540 (1972-09-01), Almasi et al.
patent: 3701125 (1972-10-01), Chang et al.
patent: 3828329 (1974-08-01), Fischer et al.
patent: 3967002 (1976-06-01), Almasi et al.
patent: 4040019 (1977-08-01), Bullock
IBM Technical Disclosure Bulletin, vol. 18, No. 4, Sep. 1975, pp. 1274-1275.
International Business Machines - Corporation
Moffitt James W.
Stanland Jackson E.
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