Electronic validation machine for documents

Details Electronic validation machine for documents Electronic validation machine for documents

1994-06-22

1995-11-28

Shepperd, John

Registers

Coded record sensors

Particular sensor structure

235451, 235492, 235375, 34082531, G06K 706

Patent

active

054710391

ABSTRACT:
Information can be obtained from a document having printed electronic circuits by using an electronic verification machine that determines the electrical characteristics or signatures of the circuits printed on the document. The electronic verification machine electronically couples with the circuit and applies an excitation signal such as an AC signal having a predetermined frequency to the circuit. A detection circuit in the electronic verification machine then generates a detection signal in response to the excitation signal which represents the characteristics of the circuit printed on the document. The electronic verification machine can also be used to stigmatize the document by applying a signal to the electronic circuits having sufficient strength to alter the electronic circuit.

REFERENCES:
patent: 2384667 (1945-09-01), Dowd
patent: 3617374 (1971-11-01), Hodson et al.
patent: 3687072 (1972-08-01), Pym
patent: 3699311 (1972-10-01), Dunbar
patent: 3790754 (1974-02-01), Black et al.
patent: 3907694 (1975-09-01), Lu
patent: 3985663 (1976-10-01), Lu et al.
patent: 3993842 (1976-11-01), Hirsch et al.
patent: 4059444 (1977-11-01), Lu et al.
patent: B14183989 (1990-05-01), Tooth
patent: 4230344 (1980-10-01), Bell, Jr. et al.
patent: 4231593 (1980-11-01), Bell, Jr. et al.
patent: 4371196 (1983-02-01), von Kempski et al.
patent: 4507550 (1985-03-01), Fleer
patent: 4511616 (1985-04-01), Pitts et al.
patent: 4528222 (1985-07-01), Rzepecki et al.
patent: 4579371 (1986-04-01), Long et al.
patent: 4591707 (1986-05-01), Stenzel et al.
patent: 4609207 (1986-09-01), Muck et al.
patent: 4697514 (1987-10-01), George et al.
patent: 4759970 (1988-07-01), Seeger, Jr. et al.
patent: 4804601 (1989-02-01), Watson et al.
patent: 4820912 (1989-04-01), Samyn
patent: 4849287 (1989-07-01), Itoh et al.
patent: 4863757 (1989-09-01), Durand
patent: 4880964 (1989-11-01), Donahue
patent: 4946733 (1990-08-01), Seeger, Jr. et al.
patent: 5013606 (1991-05-01), Miyoshi et al.
patent: 5047283 (1991-09-01), Leatherman et al.
patent: 5061551 (1991-10-01), Durand
patent: 5093038 (1992-03-01), Durand
patent: 5112672 (1992-05-01), Kaule et al.
patent: 5126390 (1992-06-01), Duff
patent: 5137542 (1992-08-01), Buchanan et al.
patent: 5151386 (1992-09-01), Bottari et al.
patent: 5151582 (1992-09-01), Fujioka
patent: 5204681 (1993-04-01), Greene
D. G. Fink & H. W. Beaty, "Standard Handbook for Electrical Engineers", Jun. 80, pp. 2-35.

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