Magneto-inductive readout of cross-tie wall memory system using

Details Magneto-inductive readout of cross-tie wall memory system using Magneto-inductive readout of cross-tie wall memory system using

1975-08-28

1977-05-17

Curtis, Marshall M.

Communications: electrical

Digital comparator systems

340174SR, G11C 1102

Patent

active

040245152

ABSTRACT:
The method of and a configuration for reading out the information that is stored in a cross-tie wall memory system is disclosed. The apparatus utilizes: a continuously, relatively long, sense line that is aligned along and straddles the cross-tie wall; a first polarity hard axis drive field H.sub.Tt that passes, if in existence, a stored-1-representing-Bloch-line from a memory segment along the cross-tie wall into, along and past the continuous sense line; a second polarity hard axis drive field H.sub.Tn that nucleates many Bloch-lines at once along the cross-tie wall in the area of the sense line for causing the nucleating Bloch-lines to induce in the sense line an output signal that is indicative of the change in polarity of the Neel wall vectors within the cross-tie wall in the area of the sense line and, accordingly, whether or not a stored-1-representing-Bloch-line had been stored previously in the memory segment.

REFERENCES:
patent: 3736419 (1973-05-01), Almasi et al.
patent: 3868660 (1975-02-01), Schwee

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