Electronic verification machine for documents
First Claim
1. A document verification mechanism comprising:
- a document having at least one inductor printed in conductive ink; and
a verification machine including;
a detection circuit including a coil inductively coupled to said inductor printed on said document, and a processor operatively connected to said detection circuit for measuring the electrical signature of said inductor printed on said document.
1 Assignment
0 Petitions
Accused Products
Abstract
Determination of the authenticity and integrity of various types of documents such as lottery tickets is accomplished by using an electronic verification machine to compare data contained in electronic circuits printed on the document to document data printed on the document. The electronic circuits are printed on the document in conductive or semiconductive ink using, for example, the gravure printing process, and the presence and status of the circuits can be used to verify or authenticate the document. Data can be represented in the electronic circuits by the electrical signature of the circuit which is measured by the electronic verification machine. In the case of lottery tickets, a ticket can be validated by having the electronic verification machine determine which play spots have been removed from the ticket and comparing data on the ticket with the removed play spots to determine a play redemption value for the ticket. Document verification or lottery ticket validation can also be accomplished by transmitting signature data from the electronic circuits via the electronic verification machine to a central computer for comparison with document data.
71 Citations
46 Claims
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1. A document verification mechanism comprising:
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a document having at least one inductor printed in conductive ink; and
a verification machine including;
a detection circuit including a coil inductively coupled to said inductor printed on said document, and a processor operatively connected to said detection circuit for measuring the electrical signature of said inductor printed on said document.
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2. A document verification mechanism comprising:
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a document having a plurality of inductors printed in conductive ink on predetermined locations on said document and a verification machine including;
a detection circuit including an array of coils configured to inductively couple to said inductors printed on said document, and a processor operatively connected to said detection circuit for measuring the electrical signatures of said inductors printed on said document. - View Dependent Claims (3, 4, 5)
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6. A method for verifying documents comprising the step of:
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printing by means of a intaglio process a plurality of conductive elements using a conductive ink on predetermined locations on a document substrate;
aligning an excitation circuit in a verification machine with said conductive elements to applying an excitation signal to said conductive elements;
utilizing a detection circuit in said verification machine to detect a signal from said conductive elements; and
utilizing a processor in said verification machine to determine from said signal from said detection circuit the characteristics of said conductive elements. - View Dependent Claims (7, 8, 9)
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10. A method for verifying a document comprising the steps of:
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providing a substrate for the document;
printing by means of a gravure or flexograph process at least one conductive element having a predetermined configuration using a conductive ink on predetermined locations on the document substrate;
transmitting an excitation signal to said conductive element;
utilizing a detection circuit in a verification machine to generate, from an electrical response generated in said conductive element in response to said excitation signal, a detection signal; and
utilizing a processor in said verification machine to determine from said detection signal from said detection circuit a characteristic of said conductive circuits. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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Specification