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

Filed on

1975-08-28

Date issued

1977-05-17

Examiner

Curtis, Marshall M.

Patent Class

Communications: electrical

SubClass

Digital comparator systems

Other Related Categories

340174SR, G11C 1102

Type

Patent

Status

active

Patent number

040245160

Description

ABSTRACT:
A 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 slotted sense line that is aligned along and that straddles the cross-tie wall; a hard axis drive field H.sub.T that passes, if in existence, a stored-1-representing-Bloch-line from a memory segment into and through the slot of the sense line; an easy axis drive field H.sub.L that induces in the sense line an output signal that is indicative of the polarity of the Neel wall within the slot 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: 3868660 (1975-02-01), Schwee
patent: 3906466 (1975-09-01), Lo et al.
patent: 3913079 (1975-10-01), Rosier
Information Store Using Soft Magnetic Bubbles; Hendel et al., IBM Tech. Discl. Bull.; vol. 18, No. 4, Sept. 1975, pp. 1258-1261.

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