One-level magnetic bubble switching device

Details One-level magnetic bubble switching device One-level magnetic bubble switching device

1976-07-30

1977-12-06

Moffitt, James W.

Static information storage and retrieval

Magnetic bubbles

Plural interacting paths

365 15, 365 43, 365 19, G11C 1908

Patent

active

040620034

ABSTRACT:
There is described an improved switching device for use in magnetic bubble domain systems. In this device, chevron propagation paths are utilized. A pair of substantially parallel conductors are interconnected at appropriate locations via the chevrons in the respective propagation paths. The pair of conductors permits reduced amplitude requirements in the control current signal. In addition, a return path for the current signal is provided to simplify interconnection in major/minor loop chip configurations. The chevrons are arranged such that the apex of one chevron group is contained between the pair of conductor lines. The ends of adjacent chevron groups in another propagation path are disposed between the pair of conductor lines. Consequently, the magnetic bubble domain "sits" on the chevron ends longer whereby wider phase margins during a transfer operation are achieved. Annihilation of magnetic bubble domains can be achieved by reversing the current direction.

REFERENCES:
patent: 3810133 (1974-05-01), Bobeck et al.
patent: 3984823 (1976-10-01), Ciak
patent: 4003037 (1977-01-01), Chang

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