Field access method for bubble memories

Details Field access method for bubble memories Field access method for bubble memories

1976-06-03

1977-11-15

Canney, Vincent P.

Static information storage and retrieval

Magnetic bubbles

Guide structure

365 2, 365 6, 365 19, G11C 1114, G11C 1900

Patent

active

040588017

ABSTRACT:
Field access system for use in propagation of bubbles is disclosed. The field access system combines discrete drive elements with a continuous drive film. An example is a Permalloy overlay consisting of a continuous drive film with protruding T & I bars which function as drive elements. This overlay structure is spaced over a suitable bubble material. The drive film is in direct contact with the T & I drive elements so that exchange coupling exists between the drive film and the drive elements. Use of a continuous drive film allows for control of the drive elements by a closed flux magnetic circuit having low power consumption.

REFERENCES:
patent: 3534347 (1970-10-01), Bobeck
patent: 3541534 (1970-11-01), Bobeck et al.
patent: 3603939 (1971-09-01), Bobeck et al.
patent: 3797001 (1974-03-01), Chen et al.
patent: 3825885 (1974-07-01), Hendel et al.

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