Multibit tag using Barkhausen effect

Details Multibit tag using Barkhausen effect Multibit tag using Barkhausen effect

Filed on

1994-11-23

Date issued

1996-07-23

Examiner

Resan, Stevan A.

Patent Class

Stock material or miscellaneous articles

SubClass

Composite

SubSubClass

Of inorganic material

Other Related Categories

428900, 235449, 235493, 340551, 427128, 427130, 427548, 2041922, G11B 566

Type

Patent

Status

active

Patent number

055388035

Description

ABSTRACT:
An identification tag which can be encoded with multiple bits of information and can be remotely interrogated and read includes a plurality of magnetic elements. The information is stored in the magnetic elements which produce a large domain wall displacement (Barkhausen jump) at a particular magnetic field.

REFERENCES:
patent: 4158434 (1979-06-01), Peterson
patent: 4281043 (1981-07-01), Deffeyes
patent: 4940966 (1990-07-01), Pettigrew et al.
patent: 4960651 (1990-10-01), Pettigrew et al.
patent: 4980670 (1990-12-01), Humphrey et al.
patent: 5001458 (1991-03-01), Tyren et al.
patent: 5181010 (1993-01-01), Furukawa et al.
patent: 5313192 (1994-05-01), Ho et al.
patent: 5368948 (1994-11-01), Davies

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