Three-dimensional magnetic bubble data storage and optical retri

Details Three-dimensional magnetic bubble data storage and optical retri Three-dimensional magnetic bubble data storage and optical retri

1985-08-08

1987-04-21

Moffitt, James W.

Static information storage and retrieval

Magnetic bubbles

Detectors

365122, G11C 1908

Patent

active

046601732

ABSTRACT:
A three-dimensional magnetic bubble memory apparatus formed of at least two arrays of sheets, with the sheets of each array being mounted in spaced and parallel relationship and with the sheets of the two arrays being perpendicular to one another, and with each sheet being formed of light-transparent material producing magnetic bubble domains, and with a multiplicity of bubble generators being located along one edge of each sheet and being responsive to selected input signals for producing arrays of magnetic bubbles for movement along parallel channels on each sheet to selected positions representative of binary data to be stored in the memory apparatus, and which includes a light source positioned on one side of each array for directing a polarized light beam to the corresponding array, and a multiplicity of photocells positioned on the other side of each array respectively aligned with the locations on the sheets of the corresponding array at which magnetic bubbles are selectively positioned so that the amplitude of light reaching each of the photocells from the corresponding beam depends upon the presence or absence of magnetic bubbles.

REFERENCES:
patent: 4333165 (1982-06-01), Swainson et al.
IBM Technical Disclosure Bulletin-vol. 13, No. 1 Jun. 1970, pp. 147-148.

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