Field access magnetic bubble memory device

Details Field access magnetic bubble memory device Field access magnetic bubble memory device

1977-07-19

1979-03-20

Moffitt, James W.

Static information storage and retrieval

Magnetic bubbles

Rotating field circuits

365 30, G11C 1908

Patent

active

041457501

ABSTRACT:
A field access magnetic bubble memory device including a memory chip applied with an in-plane magnetic field at need is disclosed. At a transient stop operation of the device before its interrupted state, an in-plane field is removed after it has been held for a predetermined period following the cessation of rotation thereof. The in-plane field may be increased upon the cessation of rotation thereof. At a transient start operation of the device after the interrupted state, an in-plane field having no rotation and the same direction as at the transient stop operation is applied for a predetermined period before the initiation of rotation thereof. The applied in-plane field may be increased upon the initiation of rotation thereof.

REFERENCES:
patent: 3763478 (1973-10-01), Yoshizawa et al.
patent: 4025911 (1977-05-01), Bobeck et al.

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