Read-only magnetic security pattern

Details Read-only magnetic security pattern Read-only magnetic security pattern

1995-05-24

1997-04-01

Pitts, Harold

Registers

Records

Magnetic

235449, G06K 1906

Patent

active

056169116

ABSTRACT:
A security device and system for encoding documents with code patterns, and particularly magnetic bar code patterns or other indicia exhibiting zero remanence. An in-field magnetoresistive (MR) sensing element read head is employed to magnetize the bar code pattern bands and detect their width or spacing apart as they are advanced with respect to the head. After read out, the bar code pattern bands exhibit practically no residual magnetic field and are not readable by a magnetic viewer. The code patterns may be in any shape or format for adding security to documents of all types.

REFERENCES:
patent: 3566356 (1971-02-01), Holm et al.
patent: 3790754 (1974-02-01), Black et al.
patent: 4124735 (1978-11-01), O'Horo
patent: 4182481 (1980-01-01), Maussion
patent: 4203544 (1980-05-01), Guilgue
patent: 4225780 (1980-09-01), Jacoub et al.
patent: 4237189 (1980-12-01), Deffeyes
patent: 4281043 (1981-07-01), Deffeyes
patent: 4855584 (1989-08-01), Tomiyama et al.
patent: 4863196 (1989-09-01), Ohnishi et al.
patent: 4982076 (1991-01-01), Fujita
patent: 5196681 (1993-03-01), Mantegazza
patent: 5418458 (1995-05-01), Jeffers

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