JP5302933B2 - Paper sheet discrimination device - Google Patents

Description

  The present invention relates to a paper sheet discriminating apparatus including a discriminating unit that discriminates the authenticity of a paper sheet.

  2. Description of the Related Art Conventionally, a banknote discriminating apparatus including a sensor that reads the characteristics of a banknote and a discriminating unit that discriminates the authenticity of the banknote based on the characteristic amount of the banknote read by the sensor is known (see, for example, Patent Document 1). ).

  In such a banknote discriminating device, for example, a maximum value and a minimum value are set in advance as discriminant values serving as criteria for authenticity discrimination, and a range from the maximum value to the minimum value is set as a reference range. Then, the determination unit determines that the banknote is a genuine note when the feature amount of the banknote is included in the reference range, and determines that the banknote is a forged ticket when the feature amount of the banknote is not included in the reference range. Determine that there is.

  The reference range is set in consideration of variations in sensor output, variations in position at the time of reading a bill, aging of the bill, and the like. Here, when the reference range is expanded, there is a high possibility that a counterfeit ticket will be misidentified as a genuine note, which may cause damage to financial institutions. On the other hand, when the reference range is narrowed, there is a high possibility that a genuine note will be misidentified as a forged ticket, and the convenience of the user may be reduced due to an increase in the return rate of the genuine note.

  In general, some of the features of banknotes distributed in the market may differ depending on the printing station and the printing time. And when the banknote from which a part of characteristic differs is thrown into the banknote discrimination | determination apparatus, there exists a possibility that it may be misidentified that a banknote is a forged ticket due to a part of characteristic being different. In this case, the convenience for the user is reduced by increasing the return rate of the genuine note. Therefore, it is conceivable to widen the reference range so that banknotes having different characteristics are also genuine.

JP 2007-219817 A

  However, as described above, when the reference range is widened, there is a problem that the risk of misidentifying a counterfeit ticket as a genuine note increases, and the accuracy of discriminating bills decreases.

  SUMMARY OF THE INVENTION The present invention solves the above-described problems, and an object of the present invention is to appropriately perform authenticity determination on paper sheets having different characteristics while suppressing deterioration in determination accuracy. The present invention is to provide a paper sheet discriminating apparatus capable of performing the above.

The paper sheet discriminating apparatus of the present invention includes a reading unit that reads a characteristic of a paper sheet including a serial number, and a determination that discriminates the authenticity of the paper sheet based on the characteristic of the paper sheet read by the reading unit. And a common discriminating value for discriminating the authenticity of the paper sheet for each feature quantity, and the paper sheet serial number and the paper sheet comprising of a specific feature amount of the feature amount, and a unique identification value SL and you stored in association with憶部for determining the authenticity of the sheet for the particular feature quantity. The determination unit determines whether the serial number of the paper sheet read by the reading unit is stored in the storage unit, and when determining that the serial number of the paper sheet is stored in the storage unit, Using the unique discrimination value associated with the paper sheet serial number, the authenticity of the paper sheet is determined for the specific feature amount corresponding to the determination value, while the feature amount other than the specific feature amount For, the authenticity of the paper sheet is discriminated using a common discriminant value .

  In this way, by storing the serial number of a paper sheet having a different part of the feature and the unique discrimination value corresponding to the paper sheet in the storage unit, the paper sheet having a different part of the characteristic is stored. As for the kind, the authenticity of the paper sheet can be discriminated using a unique discrimination value corresponding to the paper sheet. Accordingly, it is possible to suppress erroneous determination that the paper sheet is a counterfeit ticket due to a difference in some of the characteristics of the paper sheet. Moreover, since it is not necessary to widen the reference range of the common discriminant value by using the specific discriminant value, it can be prevented that the counterfeit ticket is erroneously discriminated as a genuine note. As a result, it is possible to appropriately determine the authenticity of a paper sheet having a part of different features while suppressing a decrease in the determination accuracy.

In the paper sheet determination apparatus, determine specific unit, when the sheet of the serial number is not stored in the storage unit, using a common discrimination value, the true sheet for each feature quantity Determine false.

In the paper sheet discriminating apparatus , the common discriminant value is a discriminant value for discriminating the authenticity of a standard paper sheet, and the unique discriminant value is a characteristic compared to a standard paper sheet. some of it is discrimination value for discriminating the authenticity of different sheet.

  In the paper sheet discriminating apparatus, the storage unit stores the serial number of the paper sheet and the type of the paper sheet in association with the specific discrimination value for discriminating the authenticity of the paper sheet. May be.

  In the paper sheet discriminating apparatus, the serial number of the paper sheet stored in the storage unit may include a start serial number and an end serial number.

  According to the present invention, it is possible to provide a paper sheet discriminating apparatus capable of appropriately performing authenticity discrimination of paper sheets having different characteristics while suppressing a decrease in discrimination accuracy.

It is the block diagram which showed the structure of ATM by one Embodiment of this invention. It is a schematic internal structure figure of ATM of FIG. It is a figure for demonstrating the memory | storage part of ATM of FIG. It is a figure for demonstrating the memory | storage part of ATM of FIG. It is a flowchart for demonstrating the operation | movement at the time of the deposit transaction of ATM of FIG. It is a flowchart for demonstrating the discrimination process operation | movement of ATM of FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following embodiment, a case where the present invention is applied to an ATM (Automated Teller Machine) which is an example of a paper sheet discriminating device will be described.

  First, with reference to FIGS. 1-4, the structure of ATM100 by one Embodiment of this invention is demonstrated.

  As shown in FIG. 1, the ATM 100 is connected to a host computer 200 via a network 150. In FIG. 1, only one ATM 100 is shown for simplification, but actually a plurality of ATMs 100 are connected to the host computer 200 via the network 150.

  The ATM 100 is installed in a financial institution or the like so that a user can perform transactions such as depositing banknotes. The ATM 100 includes a touch panel 1, a motor 2, a sensor 3, a communication unit 4, a control unit 5, and a storage unit 6, which are connected via a bus 100 a. The sensor 3 is an example of the “reading unit” in the present invention, and the control unit 5 is an example of the “determination unit” in the present invention.

  The touch panel 1 has a display unit and an input unit, displays transaction details, and receives instructions from the user. The motor 2 drives a conveyance roller 8 (see FIG. 2) described later. The sensor 3 includes an optical sensor using visible light or ultraviolet light, and a magnetic sensor, and reads features such as banknote image data and magnetic data. The communication unit 4 is provided for communicating with the host computer 200 via the network 150.

  The control unit 5 includes a CPU, a ROM, and a RAM, and controls the operation of the ATM 100. For example, when the feature of the bill is read by the sensor 3, the control unit 5 calculates the feature amount of the bill based on the detection result of the sensor 3.

  Here, the feature amount of the banknote is a value used for denomination and authenticity determination of banknotes, and a plurality of feature quantities are calculated for each banknote. An example of the feature amount of the banknote is a density value of a predetermined area of the banknote. Moreover, the serial number printed on the banknote is also included in the feature amount of the banknote. The operation control by the control unit 5 will be described in detail later.

As shown in FIG. 3, the memory | storage part 6 has memorize | stored the discrimination value 6a for the authenticity discrimination | determination of a banknote for every several different feature-value of a banknote. This discriminant value is a common discriminant value for discriminating the authenticity of standard banknotes widely distributed in the market. The common discrimination value has, for example, a maximum value and a minimum value, and is set in advance based on a frequency distribution of feature amounts calculated when a standard banknote (genuine note) is read by the sensor 3. ing. The storage unit 6 also stores a discrimination value for denomination discrimination.

  In addition, as shown in FIG. 4, the storage unit 6 is used to determine the authenticity of banknotes having different characteristics due to differences in printing stations and printing times compared to standard banknotes widely distributed in the market. Unique discriminant values are also stored in a database (DB). The specific discrimination value has, for example, a maximum value and a minimum value, and is based on the frequency distribution of the feature amount calculated when the bill 3 (genuine bill) having a part of the feature is read by the sensor 3. It is set in advance.

Specifically, in the database 6b, information on the denomination of banknotes, banknote serial numbers (start serial number and end serial number), specific feature amounts, and specific discrimination values (minimum value and maximum value). Are registered in association with each other. The denomination of the banknote and the serial number of the banknote are data for specifying the banknote.

  In the example of FIG. 4, when authenticity determination is performed on a banknote whose denomination is “5000” and a serial number is “AB01234”, the banknote is registered in the database 6b. When the authenticity determination is performed on the amount D, a unique determination value having a minimum value of “0” and a maximum value of “25” is used.

  Similarly, when authenticity determination is performed for banknotes with denominations “1000” and serial numbers “CD87654” to “CD88000”, the banknotes are registered in the database 6b. When authenticity determination is performed for the feature amount A, a unique determination value having a minimum value of “5” and a maximum value of “45” is used, and authenticity determination for the “feature amount B” is performed. Is used, a unique discriminant value having a minimum value of “150” and a maximum value of “230” is used.

  In addition, as shown in FIG. 2, the ATM 100 is provided with a deposit / withdrawal port 7, a transport roller 8, a discrimination unit 9, a temporary storage unit 10, a storage box 11, and a reject box 12.

  The deposit / withdrawal port 7 is provided for transferring banknotes to / from the user. A plurality of transport rollers 8 are provided for transporting banknotes. The discrimination unit 9 is provided with a sensor 3 (see FIG. 1). The temporary holding unit 10 temporarily holds the banknote when delivering the banknote to the user.

  Each of the plurality of storage boxes 11 stores bills of a specific denomination. The storage 11 stores banknotes that can be withdrawn (reusable banknotes). The reject box 12 stores non-reusable banknotes such as a damaged ticket and a counterfeit ticket.

  As illustrated in FIG. 1, the host computer 200 includes a communication unit 201, a storage unit 202, and a control unit 203.

  The communication unit 201 is provided to communicate with the ATM 100 via the network 150. The memory | storage part 202 memorize | stores the transaction log | history etc. in ATM100. The control unit 203 includes a CPU, a ROM, and a RAM, and controls the operation of the host computer 200.

  Next, with reference to FIGS. 1-6, the operation | movement at the time of the deposit transaction of ATM100 by one Embodiment of this invention is demonstrated. Each step in the flowcharts of FIGS. 5 and 6 is executed by the control unit 5 (see FIG. 1) of the ATM 100.

  First, in ATM100, it is judged in step S1 of FIG. 5 whether the payment transaction was selected among the various transactions displayed on the touch panel 1 (refer FIG. 1). If it is determined that the deposit transaction has not been selected, step S1 is repeated. That is, the ATM 100 waits until a deposit transaction is selected. If it is determined that the deposit transaction has been selected, the process proceeds to step S2.

  Next, in step S2, it is determined whether or not a bill has been inserted into the deposit / withdrawal port 7 (see FIG. 2) within a predetermined period. Whether or not the bill has been inserted is determined based on the detection result of a sensor (not shown). If it is determined that no bill has been inserted even after the predetermined period has elapsed, the deposit transaction is stopped. And if it is judged that the banknote was thrown in within the predetermined period, it will move to step S3. When a plurality of banknotes are inserted into the deposit / withdrawal port 7, the following steps S3 to S7 are performed on all inserted banknotes.

  Next, in step S3, by driving the motor 2 (see FIG. 1), the transport roller 8 (see FIG. 2) is rotated, and the bill inserted into the deposit / withdrawal port 7 is changed to the discrimination unit 9 (see FIG. 2). ).

  Next, in step S4, a discrimination process for the banknote is executed. Specifically, in step S21 of FIG. 6, the characteristics of the bills being conveyed are read by the sensor 3 (see FIG. 1) provided in the discrimination unit 9. And the control part 5 calculates the feature-value of a banknote based on the detection result of the sensor 3. FIG.

  Next, in step S22, the denomination of the bill is determined based on the calculated feature amount of the bill. The denomination is determined using the denomination discrimination value stored in the storage unit 6 (see FIG. 1). In step S23, the serial number of the banknote is determined based on the calculated feature amount of the banknote.

  Next, in step S24, based on the denomination of the banknote and the serial number of the banknote, it is determined whether or not the banknote is registered in the database 6b (see FIG. 4). And when it is judged that the banknote is registered into the database 6b, it moves to step S25. On the other hand, if it is determined that the banknote is not registered in the database 6b, the process proceeds to step S26.

  In step S25, the authenticity determination of a banknote is performed using the specific determination value registered in the database 6b. For example, in the case of a banknote whose denomination is “1000” and the serial number is “CD88000”, unique discrimination values (see FIG. 4) are registered for “feature amount A” and “feature amount B”. Yes. In this case, for the “feature amount A”, when the calculated feature amount value is within the range of the discriminant values (“5” to “45”) registered in the database 6b, “feature amount A”. Is judged to be a genuine note. Similarly, when “feature value B” is within the range of the discriminant values (“150” to “230”) registered in the database 6b, the true value of “feature value B” is true. Judged to be a ticket. If “feature amount C” is not registered in the database 6b, the calculated feature amount value is within the common discriminant value 6a (“5” to “10”) shown in FIG. In addition, the “feature value C” is determined to be a genuine note. Thereafter, true / false is similarly determined for other feature amounts. And authenticity of a banknote is discriminate | determined by comprehensively judging those results.

  In step S26, the authenticity determination of a banknote is performed using the common determination value 6a (refer FIG. 3) memorize | stored in the memory | storage part 6. FIG. For example, in the case of a banknote whose denomination is “1000” and whose serial number is “CD78000”, the banknote is not registered in the database 6b. In this case, for the “feature amount A”, if the calculated feature amount value is within the common discriminant value 6a (“10” to “50”), the genuine note in the “feature amount A” It is judged that. Thereafter, the authenticity of other feature quantities such as “feature quantity B” is similarly determined. And authenticity of a banknote is discriminate | determined by comprehensively judging those results.

  Next, in step S5 of FIG. 5, it is determined whether or not the bill is a genuine note. And when it is judged that a banknote is a genuine note, a banknote is conveyed from the discrimination part 9 to the temporary storage part 10 in step S6. On the other hand, when it is determined that the bill is not a genuine note, the bill is conveyed from the discrimination unit 9 to the deposit / withdrawal port 7 in step S7. Thereby, the banknote determined not to be a genuine note is returned to the user.

  Next, in step S <b> 8, the amount of the banknote conveyed to the temporary storage unit 10 is displayed on the touch panel 1.

  Next, in step S9, it is determined whether or not payment is instructed. Specifically, a payment confirmation button is displayed on the touch panel 1, and it is determined whether or not the payment confirmation button has been pressed. And when it is judged that payment was instruct | indicated, it moves to step S10. In addition, when multiple banknotes are hold | maintained at the temporary storage part 10, the following steps S10-S14 are performed with respect to all the banknotes hold | maintained. On the other hand, if it is determined that the deposit has not been instructed, the banknote is transported from the temporary storage unit 10 to the deposit / withdrawal port 7 in step S16. Thereby, banknotes are returned to the user and the deposit transaction is stopped.

  Next, in step S <b> 10, by driving the motor 2, the transport roller 8 rotates and the bill is transported from the temporary storage unit 10 to the discrimination unit 9. And in step S11, the discrimination process with respect to a banknote is performed. In addition, since the discrimination process in step S11 is the same as the discrimination process in step S4, description is abbreviate | omitted.

  Next, in step S12, it is determined whether or not the bill is a genuine note. And when it is judged that a banknote is a genuine note, a banknote is conveyed from the discrimination part 9 to the storage 11 in step S13. In addition, the storage 11 in which a banknote is conveyed is selected according to the money type of a banknote. On the other hand, when it is determined that the bill is not a genuine note, the bill is conveyed from the discrimination unit 9 to the reject box 12 in step S14.

  Thereafter, in step S15, the transaction result is transmitted from the communication unit 4 (see FIG. 1) to the host computer 200 (see FIG. 1) via the network 150 (see FIG. 1).

  In the present embodiment, as described above, the storage unit 6 stores a database (DB) as a unique discrimination value for discriminating the authenticity of banknotes having different features depending on the printing place and printing time. doing. And when the banknote is registered in the database 6b, the authenticity discrimination | determination of the said banknote is performed using the specific discrimination value registered in the database 6b. Thereby, it can suppress that a banknote is misidentified that it is a forged ticket resulting from a part of characteristic of a banknote differing. Moreover, since it is not necessary to widen the reference range of the common discriminant value by using the specific discriminant value, it can be prevented that the counterfeit ticket is erroneously discriminated as a genuine note. As a result, it is possible to appropriately determine the authenticity of banknotes having different features while suppressing a decrease in the determination accuracy.

  Moreover, in this embodiment, the memory | storage part 6 memorize | stores the discrimination value of all the banknotes in the database 6b by memorize | storing the common discrimination value 6a for discriminating the authenticity of the standard banknote which distribute | circulates widely in the market. Compared with the case of registration, the capacity of the database 6b can be reduced.

  Moreover, in this embodiment, when a several banknote distribute | circulates by specifying a banknote based on the banknote denomination and banknote serial number, a banknote with the same serial number distribute | circulates when a several money type distribute | circulates. Even in this case, it is possible to easily identify the banknote.

  Moreover, in this embodiment, the serial number of the banknote of the database 6b includes a start serial number and an end serial number. Here, in the database 6b, unique discrimination values for discriminating the authenticity of banknotes having different characteristics depending on the printing place and the printing time are registered. And banknotes with different features are likely to have serial numbers, so by storing a unique discrimination value in units of the range from the start serial number to the end serial number, The capacity of the database 6b can be reduced as compared with the case where registration is performed one by one.

  The present invention can employ various embodiments other than those described above. For example, in the above-described embodiment, an example in which the present invention is applied to the ATM 100 that discriminates banknotes has been shown. However, the present invention is not limited thereto, and the present invention is applied to a paper sheet discriminating apparatus that discriminates other paper sheets such as securities. You may apply.

  Moreover, in the said embodiment, although the authenticity discrimination | determination which applied this invention was shown in the case of a deposit transaction, this invention was applied not only to this but in the case of a withdrawal transaction or banknote replenishment. Authenticity discrimination may be performed.

  Moreover, in the said embodiment, when it is judged that it is not a genuine note in step S5 of FIG. 5, the example which conveys a banknote to the deposit or withdrawal port 7 (step S7) was shown, However, not only this but step S5 However, when it is determined that the bill is not a genuine note, the bill may be collected by conveying the bill to the reject box 12. Moreover, when it was judged that it is not a genuine note in step S12, the example which conveys a banknote to the rejection store | warehouse | chamber 12 was shown (step S14), but it was judged not to be a genuine note not only in this but in step S12. In this case, the banknote may be returned to the user by conveying the banknote to the deposit / withdrawal port 7.

  In the above embodiment, the maximum value and the minimum value are shown as the discriminant values. However, the present invention is not limited to this, and the discriminant value may be one threshold value or three or more threshold values. For example, when the calculated feature value is between the first threshold value and the second threshold value, it is determined to be a genuine note, and the calculated feature value is set to the third threshold value and the second threshold value. If it is between the four thresholds, it may be determined that the ticket is a counterfeit ticket.

  In the above embodiment, the data registered in the database 6b may be transmitted from the host computer 200 via the network 150 to update the database 6b. Further, the ATM 100 may update the database 6b based on the transaction history.

  Moreover, in the said embodiment, although the example which pinpoints a banknote based on the money type of a banknote and the serial number of a banknote was shown, it is not restricted to this, The serial number of a banknote and the banknote, and other feature-values The banknote may be specified based on the above.

  Moreover, in the said embodiment, after determining the serial number of a banknote, the accuracy of the determined serial number is determined based on the detection result of the sensor 3, and it is common when accuracy is lower than a predetermined threshold value. The authenticity of the banknote may be determined using the determined value. That is, when the banknote serial number cannot be accurately determined, the authenticity of the banknote may be determined using a common determination value.

3 Sensor (reading unit)
5 Control unit (discrimination unit)
6 storage unit 100 ATM (paper sheet discrimination device)

Claims (3)

A reading unit for reading the characteristics of the paper sheet including the serial number;
A discrimination unit that discriminates the authenticity of the paper sheet based on the characteristics of the paper sheet read by the reading unit;
For each of a plurality of different feature quantities of the paper sheet, a common discrimination value for determining the authenticity of the paper sheet is stored for each feature quantity, and the serial number of the paper sheet and the feature of the paper sheet are stored. with a specific feature amount of the amount, and a that Symbol憶部be stored in association with specific discriminant values for determining the authenticity of the sheet for the particular feature quantity,
The common discriminant value is a discriminant value for discriminating the authenticity of standard paper sheets,
The specific discriminant value is a discriminant value for discriminating the authenticity of a paper sheet having a part of feature different from that of the standard paper sheet,
The discrimination unit
Determining whether the serial number of the paper sheet read by the reading unit is stored in the storage unit;
When it is determined that the serial number of the paper sheet is stored in the storage unit, the specific identification value associated with the serial number of the paper sheet is used to specify the specific value corresponding to the determination value For the feature quantity other than the specific feature quantity, the true or false of the paper sheet is determined using the common discrimination value .
When determining that the serial number of the paper sheet is not stored in the storage unit, using the common determination value, determine the authenticity of the paper sheet for each feature amount ,
The unique discrimination value is updated by being transmitted from a host device via a network, or updated based on a transaction history. In the paper sheet discriminating apparatus according to claim 1,
The storage unit stores the serial number of the paper sheet and the type of the paper sheet, and a unique determination value for determining the authenticity of the paper sheet in association with each other. Discriminator. In the paper sheet discriminating apparatus according to claim 1 or 2,
The paper sheet discriminating apparatus characterized in that the serial number of the paper sheet stored in the storage unit includes a start serial number and an end serial number.

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