Parallel access bubble memory

Details Parallel access bubble memory Parallel access bubble memory

1975-03-20

1976-11-02

Moffitt, James W.

Communications: electrical

Digital comparator systems

340174YC, G11C 1114

Patent

active

039900371

ABSTRACT:
A parallel access magnetic bubble memory system comprising a planar thin film optical waveguide for the propagation of linearly polarized light along a first axis and a coupler for coupling light into the guide. Detectors are positioned along the axis of the waveguide. Magnetic bubbles are moved from memory storage locations past respective detectors on respective second axes each transverse the first axis. Each of the detectors includes a coupler for coupling light out of the waveguide. The passage of magnetic bubbles past each respective detector will modulate the polarized light by the fringing fields of the bubbles and provide discrete light output signals from the respective detectors thereby indicating the passage of these bubbles.

REFERENCES:
patent: 3859643 (1975-01-01), Borrelli

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