Boots – shoes – and leggings
Patent
1995-05-31
1998-06-02
Cosimano, Edward R.
Boots, shoes, and leggings
194206, 194213, 209567, 382320, G06K 920
Patent
active
057610894
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to apparatus and methods for magnetic detection of counterfeit suspect documents.
BACKGROUND
Document counting and handling devices are known which count, verify and stack a particular type of document, such as currency. Among such devices are those that utilize analog comparator circuits to verify whether the optical and magnetic characteristics of a document falls within thresholds set by discrete electronic components which bias the comparator circuits. In order to adapt-such-devices for counting and verifying documents, which vary with respect to optical or magnetic properties, it is necessary to manually adjust the biasing components of the analog comparator circuits. However, the particular combination of verification tests that may be implemented in a document counting device of the prior art, which is adapted for one type of document such as United States currency, may not be suitable for another type of document, such as coupons, United States food stamps, or currencies of nations other than the United States. Accordingly, it would be desirable to provide a control system for a document counting apparatus in which verification tests can be selectively enabled and in which verification thresholds and procedures can easily be selected to conform to the characteristics or properties of a variety of documents.
It has been found that accurate verification of documents based on optical and magnetic properties of documents in a high-speed document counting device is complicated by the presence of electrical noise from a variety of noise sources within the counting device. In order to increase the reliability with which documents are verified as genuine, it would be desirable to provide a system for document verification which is essentially immune to the influence of such electrical noise.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, a document counting and batching apparatus is provided with a control system governed by a programmable microprocessor. The microprocessor is connected to a multi-channel analog-to-digital (A/D) converter which samples the analog signals from optical and magnetic document sensing devices. As each document is processed, the microprocessor accumulates a plurality of sample values from the sensors via the A/D converter. The accumulated sample values are compared with programmable thresholds and/or limit values in order to verify each document as it is transported through the apparatus. The threshold and limit values used to verify the magnetic properties of the documents are each selected by the user or easily reprogrammed for verification of different types of documents. Such reprogramming may, for example, be facilitated by replacement of a nonvolatile memory containing verification parameters and a control program executed by the microprocessor.
According to another aspect of the invention, the document counting apparatus incorporates a magnetic document verification system for documents having a magnetic property and the system incorporates features for reducing the influence of noise. The magnetic document verification system employs a magnetic read head for producing an induced electrical signal in response to the passage of a document having a magnetic property by the head. The magnetic head is rigidly mounted to a document guide plate. In one embodiment of the invention, a magnet for enhancing the magnetic property of the documents is also rigidly mounted in a fixed relationship to the magnetic read head to form a unitary mechanical linkage with the read head. As documents are transported along the guide plate, a path constricting roller positioned above the read head causes the documents to pass adjacent the magnetic read head at a uniform proximity thereto. A signal conditioning circuit processes the induced electrical signal from the read head to provide a conditioned signal having a low noise content. In a preferred embodiment, the signal, conditioning circuit includes a bandpas
REFERENCES:
patent: Re29470 (1977-11-01), Jones
patent: Re33847 (1992-03-01), DeBlasio
patent: 2731621 (1956-01-01), Sontheimer
patent: 2827167 (1958-03-01), Joseph et al.
patent: 3245534 (1966-04-01), Smith et al.
patent: 3253709 (1966-05-01), Jenkins
patent: 3280974 (1966-10-01), Riddle et al.
patent: 3509535 (1970-04-01), Berube
patent: 3771783 (1973-11-01), McInerny
patent: 3857559 (1974-12-01), McInenry
patent: 3870629 (1975-03-01), Carter et al.
patent: 3870868 (1975-03-01), Jones
patent: 3912155 (1975-10-01), McInerny
patent: 3982107 (1976-09-01), Butler
patent: 4015110 (1977-03-01), Jones
patent: 4099214 (1978-07-01), Jones
patent: 4114804 (1978-09-01), Jones et al.
patent: 4146218 (1979-03-01), Loftus et al.
patent: 4216952 (1980-08-01), McInerny
patent: 4237378 (1980-12-01), Jones
patent: 4275874 (1981-06-01), DeBlasio
patent: 4283708 (1981-08-01), Lee
patent: 4313598 (1982-02-01), DeBlasio
patent: 4326636 (1982-04-01), Kawakami
patent: 4381447 (1983-04-01), Horvath et al.
patent: 4384194 (1983-05-01), Jones
patent: 4406996 (1983-09-01), Oka
patent: 4416449 (1983-11-01), McInerny
patent: 4420153 (1983-12-01), Winkler et al.
patent: 4443006 (1984-04-01), Hasegawa
patent: 4490846 (1984-12-01), Ishida et al.
patent: 4500002 (1985-02-01), Koshio et al.
patent: 4500084 (1985-02-01), McInerny
patent: 4504916 (1985-03-01), Oka
patent: 4574190 (1986-03-01), Nishimura
patent: 4593184 (1986-06-01), Bryce et al.
patent: 4608704 (1986-08-01), Sherman, III et al.
patent: 4615518 (1986-10-01), DeBlasio
patent: 4617458 (1986-10-01), Bryce
patent: 4671502 (1987-06-01), Sherman, III et al.
patent: 4703172 (1987-10-01), Sherman, III et al.
patent: 4707599 (1987-11-01), Sherman, III et al.
patent: 4709820 (1987-12-01), Jenkins et al.
patent: 4737627 (1988-04-01), Hughes et al.
patent: 4741526 (1988-05-01), Reed
patent: 4749087 (1988-06-01), Buttifant
patent: 4761002 (1988-08-01), Reed et al.
patent: 4764725 (1988-08-01), Bryce
patent: 4790526 (1988-12-01), Egashira
patent: 4796878 (1989-01-01), Nichelson et al.
patent: 4818871 (1989-04-01), Dupoy et al.
patent: 4837426 (1989-06-01), Pease et al.
patent: 4889240 (1989-12-01), Sato et al.
patent: 4895359 (1990-01-01), Ookawa
patent: 4906842 (1990-03-01), Melcher
patent: 4906988 (1990-03-01), Copella
patent: 4909149 (1990-03-01), Melcher
patent: 4922110 (1990-05-01), Melcher
patent: 4931779 (1990-06-01), Melcher
patent: 4944505 (1990-07-01), Sherman, III
patent: 4985614 (1991-01-01), Pease et al.
patent: 5005688 (1991-04-01), Yukimoto et al.
patent: 5058875 (1991-10-01), Stewart
patent: 5068519 (1991-11-01), Bryce
patent: 5118091 (1992-06-01), Nagamoto et al.
patent: 5295196 (1994-03-01), Raterman et al.
patent: 5309515 (1994-05-01), Troung et al.
patent: 5341408 (1994-08-01), Melcher et al.
patent: 5377805 (1995-01-01), Ono et al.
patent: 5430664 (1995-07-01), Cargill et al.
patent: 5545885 (1996-08-01), Jagielinski
"Magnetic Counterfeit Detection Device Service Manual", Advanced Technics and System, S.A.
"Adaptive Feed Method", IBM Technical Disclosure Bulletin, vol. 35, No. 4A, Sep. 1992.
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