Method and apparatus for currency discriminator and authenticator

• US 5,909,503 A
• Filed: 04/08/1997
• Issued: 06/01/1999
• Est. Priority Date: 02/05/1990
• Status: Expired due to Fees

• Current Assignee: Cummins-Allison Corporation (Crane Company)
• Original Assignee: Cummins-Allison Corporation (Crane Company)
• Inventors: Mennie, Douglas U., Jones, William J., Graves, Bradford T., Csulits, Frank M.
• Primary Examiner(s): Tran, Phuoc
• Application Number:
  US08/833,657
• Time in Patent Office: 784 Days
• Field of Search: 382/135, 382/137, 382/138, 382/139, 382/140, 382/312, 382/318, 382/320, 382/321, 194/207, 194/303, 209/577, 209/578, 209/534, 250/556, 250/372, 250/461.1
• US Class Current: 382/135
• CPC Class Codes: B65H 2301/541 Counting
• CPC Class Codes: B65H 2557/514 ultraviolet
• CPC Class Codes: B65H 2701/1912 Banknotes, bills and cheques or the like
• CPC Class Codes: B65H 3/063 separating from the bottom of pile B65H3/0615, B65H3/0623 take precedence
• CPC Class Codes: G06Q 20/18 involving self-service terminals [SST], vending machines, kiosks or multimedia terminals
• CPC Class Codes: G07D 11/50 Sorting or counting valuable papers
• CPC Class Codes: G07D 7/04 Testing magnetic properties of the materials thereof, e.g. by detection of magnetic imprint G07D7/01 takes precedence
• CPC Class Codes: G07D 7/12 Visible light, infrared or ultraviolet radiation
• CPC Class Codes: G07D 7/1205 Testing spectral properties
• CPC Class Codes: G07D 7/121 Apparatus characterised by sensor details
• CPC Class Codes: G07D 7/128 Viewing devices
• CPC Class Codes: G07D 7/16 Testing the dimensions
• CPC Class Codes: G07D 7/162 Length or width
• CPC Class Codes: G07D 7/20 Testing patterns thereon G07D7/004, G07D7/005 take precedence
• CPC Class Codes: G07F 19/20 Automatic teller machines [ATMs]
• CPC Class Codes: G07F 7/04 by paper currency

Abstract

A currency authenticator having a plurality of sensitivity settings comprising a first characteristic detector. The first characteristic detector retrieves first characteristic information from a bill to be authenticated and generates an output signal. The currency authenticator further comprises a unit for selecting one of a plurality of sensitivity settings, a unit for storing reference information associated with each of the sensitivity settings, and a unit for comparing the output signal to the reference information associated with the one of the plurality of sensitivity settings selected by the unit for selecting. The unit for comparing indicates that the bill is counterfeit if the output signal does not satisfactorily compare with the reference information. The unit for storing reference information stores reference information for a plurality of denominations of bills. The unit for storing stores reference information associated with each of the sensitivity settings for each of the plurality of denominations.

Claims

1. A currency authenticator having a plurality of sensitivity settings comprising:

a first characteristic detector retrieving first characteristic information from a bill to be authenticated and generating a corresponding output signal;

means for selecting one of a plurality of sensitivity settings;

means for storing reference information associated with each of said sensitivity settings; and

means for comparing said output signal to said reference information associated with the one of said plurality of sensitivity settings selected by said means for selecting; and

means for indicating that said bill is counterfeit if said output signal does not satisfactorily compare with said reference information;

wherein said means for storing reference information stores reference information associated with each of said sensitivity settings for each of a plurality of denominations of bills.

2. The currency authenticator of claim 1 wherein said reference information comprises a threshold value associated with each of said sensitivity settings for each of said plurality of denominations.

3. The currency authenticator of claim 1 further comprising means for permitting an operator of the authenticator to assign a sensitivity setting to each of said plurality of denominations and means for the operator of the authenticator to indicate the denomination of the bill to be authenticated, wherein said means for selecting selects said one of said plurality of sensitivity settings to be the sensitivity setting assigned to the indicated denomination.

4. The currency authenticator of claim 1 wherein each of said plurality of denominations has a sensitivity setting is assigned thereto and further comprising means for the operator of the authenticator to indicate the denomination of the bill to be authenticated, wherein said means for selecting selects said one of said plurality of sensitivity settings to be the sensitivity setting assigned to the indicated denomination.

5. The currency authenticator of claim 1 wherein said plurality of sensitivity settings comprise a high sensitivity setting and a low sensitivity setting.

6. The currency authenticator of claim 1 wherein said reference information associated with each of said sensitivity settings comprise a threshold value associated with each of said sensitivity settings and wherein said means for comparing indicates that said bill is counterfeit if said output signal fails to satisfy a predetermined relationship relative to said threshold value associated with the one of said plurality of sensitivity settings selected by said means for selecting.

7. The currency authenticator of claim 6 wherein said plurality of sensitivity settings comprise a high sensitivity setting and a low sensitivity setting and wherein said means for storing stores a high reference value and a low reference value, said high reference value being closer to a value of an output signal expected to be generated from a genuine bill than said low reference value.

8. The currency authenticator of claim 1 wherein said means for selecting one of said plurality of sensitivity settings permits the operator of said authenticator to select said one of said plurality of sensitivity settings.

9. The currency authenticator of claim 1 further comprising means for determining the denomination of said bill to be authenticated and wherein said means for selecting one of said plurality of sensitivity settings selects said one of said plurality of sensitivity settings based on the determined denomination of said bill;

wherein said means for selecting one of said plurality of sensitivity settings selects a lower sensitivity setting when said bill is determined to be of a lower denomination and a higher sensitivity setting when said bill is determined to be of a higher denomination.

10. The currency authenticator of claim 1 further comprising means for assigning a sensitivity setting to each of a plurality of denominations.

11. The currency authenticator of claim 10 wherein said means for assigning a sensitivity setting to each of said plurality of denominations permits an operator of the authenticator to assign a sensitivity setting to each of said plurality of denominations.

12. The currency authenticator of claim 1 wherein each of a plurality of denominations has a sensitivity setting is assigned thereto.

13. The currency authenticator of claim 1 further comprising means for determining the denomination of said bill to be authenticated and wherein said means for comparing compares the output signal to the reference information corresponding to the determined denomination and the selected sensitivity setting.

14. The currency authenticator of claim 1 further comprising means for the operator to indicate the denomination of the bill to be authenticated and wherein said means for comparing compares the output signal to the reference information corresponding to the indicated denomination and the selected sensitivity setting.

15. A currency authenticator having a plurality of sensitivity settings comprising:

one or more detectors for retrieving a plurality of types of characteristic information from a bill to be authenticated and generating a respective output signal associated with each type of characteristic information;

means for selecting, for each type of characteristic information, one of a plurality of sensitivity settings;

means for storing, for each type of characteristic information, reference information associated with each of said sensitivity settings;

means for comparing, for each type of characteristic information, said respective output signal to corresponding reference information associated with the one of said plurality of sensitivity settings selected by said means for selecting for said type of characteristic information; and

means for indicating that said bill is counterfeit if one or more of said output signals do not satisfactorily compare with said reference information.

16. The currency authenticator of claim 15 wherein said plurality of types of characteristic information comprise magnetic information, reflected ultraviolet light information, and fluorescent light information.

17. A currency authenticator having a plurality of sensitivity settings comprising:

a first characteristic detector retrieving first characteristic information from a bill to be authenticated and generating a corresponding output signal;

means for determining the denomination of said bill to be authenticated;

means for selecting one of a plurality of sensitivity settings, said means for selecting one of said plurality of sensitivity settings selecting said one of said plurality of sensitivity settings based on the determined denomination of said bill;

means for storing reference information associated with each of said sensitivity settings;

means for comparing said output signal to said reference information associated with the one of said plurality of sensitivity settings selected by said means for selecting; and

means for indicating that said bill is counterfeit if said output signal does not satisfactorily compare with said reference information.

18. A currency authenticator having a plurality of sensitivity settings comprising:

a first characteristic detector retrieving first characteristic information from a bill to be authenticated and generating a corresponding output signal;

means for selecting one of a plurality of sensitivity settings;

means for assigning at least one of said plurality of sensitivity settings to each of a plurality of denominations;

means for storing reference information associated with each of said sensitivity settings;

means for comparing said output signal to said reference information associated with the one of said plurality of sensitivity settings selected by said means for selecting; and

means for indicating that said bill is counterfeit if said output signal does not satisfactorily compare with said reference information.

19. The currency authenticator of claim 18 further comprising means for the operator of the authenticator to indicate the denomination of the bill to be authenticated and wherein said means for assigning a sensitivity setting to each of said plurality of denominations permits an operator of the authenticator to independently assign a sensitivity setting to each of said plurality of denominations and wherein said means for selecting selects said one of said plurality of sensitivity settings to be the sensitivity setting assigned to the indicated denomination.

20. A currency handling device having a plurality of sensitivity settings comprising:

a first characteristic detector retrieving first characteristic information from a bill and generating a corresponding output signal;

means for selecting one of a plurality of sensitivity settings;

means for storing reference information associated with each of said sensitivity settings, said means for storing reference information storing reference information for each of a plurality of denominations of bills for each of said plurality of sensitivity settings; and

means for comparing said output signal to said reference information associated with the one of said plurality of sensitivity settings selected by said means for selecting; and

means for producing an indication if said output signal does not satisfactorily compare with said reference information.

21. The currency device of claim 20 wherein said reference information comprises a threshold value associated with each of said sensitivity settings for each of said plurality of denominations.

22. The currency device of claim 20 wherein said means for selecting one of said plurality of sensitivity settings permits the operator of said device to select said one of said plurality of sensitivity settings.

23. The currency device of claim 20 wherein said means for selecting one of said plurality of sensitivity settings selects a lower sensitivity setting when said bill is determined to be of a lower denomination and a higher sensitivity setting when said bill is determined to be of a higher denomination.

24. The currency device of claim 20 further comprising means for the operator of the device to indicate the denomination of the bill and means for assigning a sensitivity setting to each of a plurality of denominations and

wherein said means for assigning a sensitivity setting to each of said plurality of denominations permits an operator of the device to independently assign a sensitivity setting to each of said plurality of denominations and wherein said means for selecting selects said one of said plurality of sensitivity settings to be the sensitivity setting assigned to the indicated denomination.

25. The currency device of claim 20 wherein each of said plurality of denominations has a sensitivity setting is assigned thereto and further comprising means for the operator of the device to indicate the denomination of said bill, wherein said means for selecting selects said one of said plurality of sensitivity settings to be the sensitivity setting assigned to the indicated denomination.

26. The currency device of claim 20 further comprising means for determining the denomination of the bill and wherein said means for comparing compares the output signal to the reference information corresponding to the determined denomination and the selected sensitivity setting.

27. The currency device of claim 20 further comprising means for the operator to indicate the denomination of the bill and wherein said means for comparing compares the output signal to the reference information corresponding to the indicated denomination and the selected sensitivity setting.

28. A method of authenticating a currency bill having an undetermined denomination using a currency authenticator, the method comprising the steps of:

scanning a currency bill to determine a scanned authentication value associated with a selected authentication attribute of the currency bill;

determining the denomination of the currency bill;

selecting one of a plurality of authentication sensitivity levels associated with the selected authentication attribute;

selecting a reference authentication value based on the determined denomination of the currency bill and the selected sensitivity level, each of the plurality of authentication sensitivity levels having a reference value associated with each of a plurality of denominations stored in a memory of the currency authenticator; and

authenticating the currency bill by comparing the scanned value to the selected reference value.

29. A method of authenticating a currency bill having an undetermined denomination using a currency authenticator, the method comprising the steps of:

scanning a currency bill to determine a scanned authentication value associated with a selected authentication attribute of the currency bill;

the operator indicating the denomination of the currency bill;

selecting one of a plurality of authentication sensitivity levels associated with the selected authentication attribute;

selecting a reference authentication value based on the indicated denomination of the currency bill and the selected sensitivity level, each of the plurality of authentication sensitivity levels having a reference value associated with each of a plurality of denominations stored in a memory of the currency authenticator; and

authenticating the currency bill by comparing the scanned value to the selected reference value.

30. The method of claim 29 further comprising the step of the operator indicating the denomination of the bill and wherein the step of selecting one of the sensitivity settings comprises the authenticator selecting a sensitivity setting based on the denomination indicated by the operator.

31. A method of authenticating currency using a currency authenticator having a plurality of sensitivity settings comprising:

retrieving first characteristic information from a bill to be authenticated using a first characteristic detector and generating an output signal;

selecting one of a plurality of sensitivity settings;

comparing the output signal to reference information associated with the selected sensitivity setting, the reference information being stored in a memory of the authenticator, the memory storing reference information associated with each of the sensitivity settings for each of a plurality of denominations; and

indicating that the bill is counterfeit if the output signal does not satisfactorily compare with the reference information.

32. A currency handling method using a plurality of sensitivity settings, said method comprising the steps of:

retrieving first characteristic information from a bill and generating a corresponding output signal;

selecting one of a plurality of sensitivity settings;

storing reference information associated with each of said sensitivity settings, including reference information for each of a plurality of denominations of bills for each of said plurality of sensitivity settings;

comparing said output signal to said reference information associated with the one of said plurality of sensitivity settings selected by said selecting step; and

producing an indication if said output signal does not satisfactorily compare with said reference information.