Static information storage and retrieval – Magnetic bubbles – Strip domain
Patent
1977-04-08
1978-06-13
Moffitt, James W.
Static information storage and retrieval
Magnetic bubbles
Strip domain
365 30, 365 32, 365 36, 365 37, G11C 1908
Patent
active
040952797
ABSTRACT:
An apparatus for and a method of propagating bubble domains is disclosed. The apparatus includes a memory plane that is comprised of a non-magnetic support member upon which are formed a bubble domain layer and at least one stripe domain layer. The stripe domain layer has a set of relatively-narrow, periodic, potential well generating fixed stripe domains provided therein while the bubble domain layer has a set of relatively-wide, parallel, potential well generating fixed guidance channels provided therein that are oriented orthogonal to the parallel set of stripe domains in the stripe domain layer. Bubble domains are concurrently entered, in parallel, at one end of the memory plane in selected ones of the guidance channels. A periodic amplitude modulated bias field of frequency F propagates each of the bubble domains along the associated guidance channel from adjacent to next downstream adjacent stripe domain and thus through the memory plane at the frequency F.
REFERENCES:
patent: 3887905 (1975-06-01), Bobeck et al.
patent: 3916395 (1975-10-01), Urai
patent: 3944842 (1976-03-01), Dorleijn et al.
patent: 3996571 (1976-12-01), Chang
Cleaver William E.
Grace Kenneth T.
Moffitt James W.
Sperry Rand Corporation
Truex Marshall M.
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