Bloch-line memory device for stably reading information

Details Bloch-line memory device for stably reading information Bloch-line memory device for stably reading information

1990-01-25

1991-07-09

Popek, Joseph A.

Static information storage and retrieval

Magnetic bubbles

Strip domain

365 87, G11C 1114

Patent

active

050311409

ABSTRACT:
A Bloch-line memory device comprises a magnetic medium including a read-out area and a potential barrier portion. The read-out area is on the principal surface of the magnetic medium and the potential barrier portion is located between the read-out area an a predetermined end portion of one or more domains. A pulsed magnetic field is strenghtened during a predetermined time interval to expand the magnetic domain towards the read-out area. When a magnetic domain with a single Block line at its end portion is expanded into the read-out area, the magnetic domain is chopped to produce a magnetic bubble. The magnetic bubble is detected by a detecting circuit and an output signal representative of an information signal is generated.

REFERENCES:
patent: 4845671 (1989-07-01), Maruyama et al.

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