Magnetic bubble memory device cassette

Details Magnetic bubble memory device cassette Magnetic bubble memory device cassette

1980-10-01

1984-07-10

Moffitt, James W.

Static information storage and retrieval

Magnetic bubbles

G11C 1908

Patent

active

044596790

ABSTRACT:
A cassette type magnetic bubble memory device is dismountably attached to a main apparatus, having a bubble driving circuit, a bubble writing circuit and a bubble reading circuit, and which comprises a case and, contained therein, a magnetic bubble memory element including at least a bubble chip, a coil for producing a revolving magnetic field and a magnet for producing a bias magnetic field. A writing-inhibiting member is mounted on the surface of the case to hold the state of inhibition of the writing operation in the magnetic bubble memory element. This writing-inhibiting member is arranged so that the state of inhibition of the writing operation and the state of allowance of the writing operation can be switched by a manual operation. A lock mechanism for preventing separation of the cassette while a revolving magnetic field is produced and a converse insertion-inhibiting mechanism for inhibiting converse insertion of the cassette when the cassette is being attached to the main apparatus are also provided.

REFERENCES:
patent: 3486675 (1969-12-01), Krechman
patent: 3721772 (1973-03-01), Miura et al.
patent: 3825947 (1974-07-01), Rubin et al.
patent: 3828363 (1974-08-01), Somers
Electronics-May 5, 1981-vol. 54, No. 9, pp. 149-151.

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