JPH10208102A - Device for discriminating counterfeit paper money - Google Patents

Abstract

PURPOSE: To sufficiently handle even a counterfeit paper money which is magnetically copied and to improve the precision and reliability by adding an element for color decision making in the area of a light emitting element using near infrared rays. CONSTITUTION: A light emitting element of a sensor set emits transmitting light of near infrared rays of 600 to 1500nm and the top surface of a paper money 1 whose entrance into a detection zone is confirmed by a sensor 4 is scanned with the transmitting light. Near infrared rays having been transmitted through the scanned bill 1 are detected by a light receiving element and fixed comparison data in obtained transmitted near infrared ray time-series data are compared with corresponding data stored in a memory by using a genuine paper money to judge whether or not their difference is allowable. A light source 9 for color detection is arranged in the same area with the light emitting element 2, the light from the light source 9 is made incident on a color sensor 10, and data obtained by the light receiving element are combined; and the resulting data are inputted to an AD converter and outputted to the discriminating means 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for judging the authenticity of a banknote, in particular, using near-infrared light as a means for transmitting data, comparing data obtained by receiving light with genuine data stored in advance and inserting the data. The present invention relates to an improvement in a device for determining the authenticity of a banknote.

[0002]

2. Description of the Related Art Generally, vending machines, currency exchange machines, game machines and the like are provided with a system for discriminating whether the inserted bill is genuine or fake, in a conveying path system for the inserted bill. There is provided a device for taking in a storage room in the case of a genuine bill as a result of the discrimination, and reversing and returning the transport mechanism in the case of a fake bill.

[0003] The above-mentioned authenticity determination of a bill is performed by detecting a magnetic substance contained in the ink of the bill and having a unique distribution state by a magnetic sensor, or by capturing and processing a printed pattern of the bill as an image. Etc. are known. However, the detection of magnetism can be avoided by applying a very simple process to check the sensor, and the time-series detection data in a fixed detection zone differs every time even for the same bill, and the reliability of accuracy is high. Poor.
Further, in the case of image processing, erroneous determination itself occurs due to the improvement in the technical accuracy of the copying machine.

In view of the above, recently, a determination system using a combination of a light emitting element and a light receiving element has been developed, and this determination system obtains data by reflecting or transmitting light from the light emitting element to the inserted bill. The data is transmitted to the light receiving element and compared with the authentic data.

[0005]

However, in the above-described determination system using light, in particular, in the range of 600 nm to 1 nm.
In a system using near-infrared rays of about 500 nm, in addition to detecting and comparing the waveform, the determination of the iron content, that is, the presence / absence of magnetism is also performed. In this regard, when a magnetic copy whose technology has been improved in recent years is used, there is a possibility that a check may be erroneously recognized in the magnetic determination part.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention has been made by paying attention to the problems of the prior art in the authenticity discriminating apparatus for bills using the above-mentioned light, particularly near infrared rays. It is an object of the present invention to provide a more accurate and reliable bill authenticity discriminating apparatus which can sufficiently cope with a counterfeit bill of copying by copying.

[0007]

In order to achieve this object, a bill authenticity discriminating apparatus according to the present invention comprises a sensor for detecting insertion of a bill and activating a mechanism, a light emitting element using near infrared rays, and A light receiving element that receives a data signal from the light emitting element, and in a device that determines the authenticity of a bill by comparing data from the light receiving element with genuine bill data, an element for color determination is added to the light emitting element area. It is characterized by having.

[0008]

With the above configuration, in addition to comparison (waveform) of data information using light, it is possible to check the color arrangement (particularly red in relation to wavelength) of a specific position present on a bill. As a result, the accuracy is improved as compared with the related art, and a highly reliable discriminating apparatus is obtained.

[0009]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a banknote authenticity discriminating apparatus embodying the present invention, and FIG. 2 is a block diagram showing a main part of the second embodiment.

In these figures, reference numeral 1 denotes a bill, and the bill 1 is loaded into the inside from an insertion slot by a general transport mechanism such as a roller group or a belt. The inserted bill 1 is set so as to pass at a constant speed between a sensor set composed of a light emitting element 2 and a light receiving element 3 using near infrared rays. A sensor 4 for detecting the position of the bill 1 is disposed above and in front of the sensor set, and detects that the inserted bill 1 has reached a predetermined position. This detection signal is input to the AD converter 5, and AD conversion is started at the input timing.

In the case of FIG. 1, the light emitting element 2 of the sensor set
Is scanned with near-infrared transmitted light of 600 nm to 1500 nm from the upper surface of the banknote 1 which has been confirmed by the sensor 4 to have come to the detection zone.
The near-infrared ray that has been scanned along the detection zone and transmitted through the bill 1 is received by the light-receiving element 3 described above, and certain comparison data in the obtained transmitted near-infrared ray time-series data is stored in a genuine bill. Compare with

In the figure, reference numeral 9 denotes an LED for red detection which is provided or integrated in the same area as the light emitting element 2, and the light emitted and emitted from this LED 9 is similarly received by the light receiving element 3. , And the data of the genuine bill.

The data from the light receiving element 3 is input to the AD converter 5 and is sampled at a predetermined sampling frequency synchronized with the running speed of the banknote 1. The number of samples by the AD converter 5 is counted by a counter 6. The output from the counter 6 is sent to the ROM 7 and the judgment means 8. The output from the sensor 4 is also sent to the counter 6, and the counting is started at the same time as the output from the sensor 4 is input.

The ROM 7 stores genuine data of each denomination of genuine banknotes. In this recording, in addition to the waveform, the ink component, the generated irregularities, the content of the component absorbing near-infrared rays, and the like are recorded. Data such as the color, especially the wavelength of the true red, is also stored and compared.

The output of the above-mentioned counter 6 indicates the detection position of the corresponding detection data of the banknote 1 under inspection,
When this matches the address of the genuine data serving as a reference, the detected data, that is, the output of the AD converter 5 and the RO
The corresponding address data of M7 is compared by the judgment means 8. When the address value is inputted from the counter 6 to the ROM 7, the judging means 8 simultaneously receives the same value of the counter 6 and starts the operation. The judging means 8 compares the authentic data with the output of the AD converter 5 and judges whether or not the difference is permissible. As a result, if the difference is within the permissible range, the data is sent to the apparatus. It will be returned by mouth.

FIG. 2 shows a reflection type in which light from the light emitting element 2 and the LED 9 is reflected by the bill 1 and received by the light receiving element 3. In this case, the light emitting element 2, L
The ED 9 and the light receiving element 3 can be installed integrally.

In these embodiments, the data is digitized through the AD converter 5 so that the data can be easily compared. However, it is also possible to directly compare the waveforms. It is also possible to integrate them, and it is also possible to adopt a configuration in which the sensor set side is moved without being limited to the running of the banknote 1.

According to the present embodiment, in addition to the waveform comparison using near-infrared rays, the forgery due to magnetic copy, which has been improved in technology, can be completely eliminated, especially because the element of red detection is added. Thus, the determination time is reduced.

[0019]

As described above, according to the bill authenticity discriminating apparatus of the present invention, in addition to the conventional data comparison using near-infrared rays, color, especially red, is detected. Strict checks can also be performed on forgeries caused by magnetic copying. General black and white copy is 600nm
The red value is about 660 nm, and the numerical value overlaps, so that the check mechanism does not need to use a special new element, and the price can be kept low. Good and reliable.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a bill authenticity discriminating apparatus embodying the present invention.

FIG. 2 is a block diagram showing a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Banknote 2 Light emitting element 3 Light receiving element 4 Sensor 5 AD converter 6 Counter 7 ROM 8 Judgment means 9 LED

[Procedure amendment]

[Submission date] June 20, 1991

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] Bill authentication device

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for judging the authenticity of a banknote, in particular, using near-infrared light as a means for transmitting data, comparing data obtained by receiving light with genuine data stored in advance and inserting the data. The present invention relates to an improvement in a device for determining the authenticity of a banknote.

[0002]

2. Description of the Related Art Generally, vending machines, currency exchange machines, game machines and the like are provided with a system for discriminating whether the inserted bill is genuine or fake, in a conveying path system for the inserted bill. There is provided a device for taking in a storage room in the case of a genuine bill as a result of the discrimination, and reversing and returning the transport mechanism in the case of a fake bill.

[0003] The above-mentioned authenticity determination of a bill is performed by detecting a magnetic substance contained in the ink of the bill and having a unique distribution state by a magnetic sensor, or by capturing and processing a printed pattern of the bill as an image. Etc. are known. However, the detection of magnetism can be avoided by applying a very simple process to check the sensor, and the time-series detection data in a fixed detection zone differs every time even for the same bill, and the reliability of accuracy is high. Poor.
Further, in the case of the image processing, the discrimination may be erroneously made due to the improvement of the technical accuracy of the copying machine.

In view of the above, recently, a determination system using a combination of a light emitting element and a light receiving element has been developed, and this determination system obtains data by reflecting or transmitting light from the light emitting element to the inserted bill. The data is transmitted to the light receiving element and compared with the authentic data.

[0005]

However, in the above-described determination system using light, in particular, in the range of 600 nm to 1 nm.
In a system using near-infrared rays of about 500 nm, in addition to detecting and comparing the waveform, the determination of the iron content, that is, the presence / absence of magnetism is also performed. In this regard, when a magnetic copy whose technology has been improved in recent years is used, there is a possibility that a check may be erroneously recognized in the magnetic determination part.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention has been made by paying attention to the problems of the prior art in the authenticity discriminating apparatus for bills using the above-mentioned light, particularly near infrared rays. It is an object of the present invention to provide a more accurate and reliable bill authenticity discriminating apparatus which can sufficiently cope with a counterfeit bill of copying by copying.

[0007]

In order to achieve this object, a bill authenticity discriminating apparatus according to the present invention comprises a sensor for detecting insertion of a bill and activating a mechanism, a light emitting element using near infrared rays, and In a light receiving element that receives data from the light emitting element and a device that determines the authenticity of a bill by comparing data from the light receiving element with data of a genuine bill,
A color determining element is added to the light receiving element area.

[0008]

According to the above configuration, in addition to comparison (waveform) of data information using light, it is possible to check the color arrangement of a specific position present on a banknote. Thus, the accuracy is improved and a highly reliable discriminating device is obtained.

[0009]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a banknote authenticity discriminating apparatus embodying the present invention, FIG. 2 is a block diagram showing main parts of the second embodiment, and FIG. 3 is a block diagram showing main parts of the third embodiment. FIG. 4 is a block diagram showing a main part of the fourth embodiment.

In these figures, reference numeral 1 denotes a bill, and the bill 1 is loaded into the inside from an insertion slot by a general transport mechanism such as a roller group or a belt. The inserted bill 1 is set so as to pass at a constant speed between a sensor set composed of a light emitting element 2 and a light receiving element 3 using near infrared rays. A sensor 4 for detecting the position of the bill 1 is disposed above and in front of the sensor set, and detects that the inserted bill 1 has reached a predetermined position. This detection signal is input to the AD converter 5, and AD conversion is started at the input timing.

In the case of FIG. 1, the light emitting element 2 of the sensor set
Is scanned with near-infrared transmitted light of 600 nm to 1500 nm from the upper surface of the banknote 1 which has been confirmed by the sensor 4 to have come to the detection zone.
The near-infrared ray that has been scanned along the detection zone and transmitted through the bill 1 is received by the light-receiving element 3 described above, and certain comparison data in the obtained transmitted near-infrared time-series data is stored in a genuine bill. Compare with

A light source 9 for color detection is provided or integrated in the same area as the light emitting element 2 in the figure, and it is desirable that the light source 9 be a daylight light source. The light from the light source 9 is incident on the color sensor 10 arranged or integrated in the area of the light receiving element 3 and receives the light from the light emitting element 2 using near infrared rays.
The data is combined with the data such as the waveform obtained in step (1) and is taken into the AD converter 5.

Data from the light receiving element 3 and the color sensor 10 are input to the AD converter 5 and are sampled at a predetermined sampling frequency synchronized with the running speed of the banknote 1. The number of samples by the AD converter 5 is counted by a counter 6. . The output from the counter 6 is sent to the ROM 7 and the judgment means 8. The output from the sensor 4 is also sent to the counter 6, and the counting is started at the same time as the output from the sensor 4 is input.

The ROM 7 stores genuine data of each denomination of genuine banknotes. In this recording, in addition to the waveform, the ink component, the generated irregularities, the content of the component absorbing near-infrared rays, and the like are recorded. Data relating to colors is also stored and compared.

The output of the above-mentioned counter 6 indicates the detection position of the corresponding detection data of the banknote 1 under inspection,
When this matches the address of the genuine data serving as a reference, the detected data, that is, the output of the AD converter 5 and the RO
The corresponding address data of M7 is compared by the judgment means 8. When the address value is inputted from the counter 6 to the ROM 7, the judging means 8 simultaneously receives the same value of the counter 6 and starts the operation. The judging means 8 compares the authentic data with the output of the AD converter 5 and judges whether or not the difference is permissible. As a result, if the difference is within the permissible range, the data is sent to the apparatus. It will be returned by mouth.

FIG. 2 shows a reflection type in which light from the light emitting element 2 and the light source 9 is reflected by the bill 1 and received by the light receiving elements 3 and 10. In this case, the light emitting element 2 light source 9 and the light receiving elements 3 and 10 can be installed integrally. FIGS. 3 and 4 show the transmission type and the reflection type in which the light source can be either 2 or 9, and the combination type can be freely selected from 2 and 9. Becomes This is because the daylight color light source 9 includes infrared rays, visible rays, and ultraviolet rays. In particular, infrared rays and visible rays have long wavelengths, and therefore have the power to pass through them, so that 2 and 9 can be common.

In these embodiments, the data is digitized through the AD converter 5 so that the data can be easily compared. However, it is also possible to directly compare the waveforms. It is also possible to integrate them, and it is also possible to adopt a configuration in which the sensor set side is moved without being limited to the running of the banknote 1.

According to the present embodiment, in addition to the waveform comparison using near infrared rays, a color check element is taken into account, so that forgery by magnetic copying, which has improved technology, can be completely eliminated. The determination time is shortened.

[0019]

As described above, according to the bill authenticity discriminating apparatus according to the present invention, in addition to the conventional data comparison using near-infrared rays, color detection is performed, so that the technology is advanced. Strict checks can be performed against forgeries by copying. Because the wavelength of color and general black-and-white copy overlap numerically, the checking mechanism does not need to use a special new element, and the price can be kept low, and the accuracy is high and the reliability is high. Can be high.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a banknote authenticity discriminating apparatus embodying the present invention.

FIG. 2 is a block diagram showing a second embodiment of the present invention.

FIG. 3 is a block diagram showing a third embodiment of the present invention.

FIG. 4 is a block diagram showing a fourth embodiment of the present invention.

[Description of Signs] 1 Banknote 2 Light-emitting element 3 Light-receiving element 4 Sensor 5 AD converter 6 Counter 7 ROM 8 Discriminating means 9 Light source 10 Color sensor

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] Fig. 1

[Correction method] Change

[Correction contents]

FIG.

[Procedure amendment 3]

[Document name to be amended] Drawing

[Correction target item name] Figure 2

[Correction method] Change

[Correction contents]

FIG. 2

[Procedure amendment 4]

[Document name to be amended] Drawing

[Correction target item name] Figure 3

[Correction method] Added

[Correction contents]

FIG. 3

[Procedure amendment 5]

[Document name to be amended] Drawing

[Correction target item name] Fig. 4

[Correction method] Added

[Correction contents]

FIG. 4 ────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] June 30, 1993

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction contents]

Further, FIG. 2 shows a reflection type in which light from the light emitting element 2 is reflected by the light receiving element 3, and light from the light source 9 is reflected on the bill 1 by the surface of the banknote. In this case, the light-emitting element 2 and the light source 9 and the light-receiving element 3 and the color sensor 10 can also be installed as integrated elements, each of which internally separates light. FIGS. 3 and 4 show a transmission type and a reflection type in which only one of the light sources 2 or 9 is required, and it is possible to freely select 2, 9 in this combination. Become. Note that, in addition to a single color such as red, three primary colors and an auto white balance can be applied to the color sensor 10, and a blue check can be performed by performing a unique processing on the light emitting element. Further, application of ultraviolet light is also conceivable. In this case, a near-infrared light emitter such as a cold cathode fluorescent lamp or a black light is used as a light emitting element, and a photodiode, a white balance sensor, a three primary color sensor, a color sensor, or the like is used as a light receiving element, or a photoconductive cell (CDS).
Using 340 nm to 400 nm, especially the peaks at 360 nm to 370 nm and 200 nm to 315 n.
Using two wavelengths with a wavelength of m, particularly a peak of 253.7 nm , the obtained data is collated with the authentic data in the memory and discriminated. When the above-mentioned peak wavelength is used, the judgment of authenticity becomes apparent at first glance. Further, by using the above-described wavelength, it is possible to identify the paper quality and the like constituting the genuine banknote and the forged banknote by transmitting or reflecting light. Further, the same result can be obtained by irradiating the side face of the bill.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction contents]

FIG. 2 shows a light receiving element for receiving light from the light emitting element 2.
3 and the light from the light source 9 to the color sensor 10
Reflective type that reflects light on one surface and receives light
You. In this case, the light emitting element 2 and the light source 9 and the light receiving element 3 and the light
The color sensor 10 has an integrated interior with separate light shielding
It can be installed as an element. 3 and FIG.
4 means that the light source can be either 2 or 9
Transmission type and reflection type.
The shape can be freely selected from 2, 9. What
The color sensor 10 has a single color such as red,
Color, auto white balance, etc. can be applied to light emitting elements
Blue check is also possible by performing original processing
You. Further, application of ultraviolet light is also conceivable. ────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] March 7, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 2

[Correction method] Change

[Correction contents]

2. A bill authenticity discriminating apparatus using near-infrared light, wherein light from a light source, mainly a daylight light source, is transmitted or reflected by the bill, and the light is transmitted through a color sensor, a three primary color sensor, or an auto white balance.
An authenticity discriminating device for bills, which is incident on a sensor , measures various data and colors in an image pattern, and compares the measured data with authentic data. ────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] October 6, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

[0007]

In order to achieve this object, a bill authenticity discriminating apparatus according to the present invention comprises a sensor for detecting insertion of a bill and activating a mechanism, a light emitting element using near infrared rays, and a light receiving element for receiving the data from the light-emitting elements, a equipment determining the authenticity of the bill by comparing data from the light receiving element and the authenticity of the bill data,
Red LE before Symbol emitting element area as an element of the color determination
In authenticity discriminating equipment of the bill that is added to D, the receiving
A / D converter to which data of an optical element is input and its A
A predetermined converter synchronized with the running speed of the bill by the D converter
The number sampled at the sampling frequency and the
Counters to which the output from the
The ROM having the wavelength of the true red and the cowl
Authenticity is determined by the output data of the
It is characterized in that it comprises a determination means for performing the determination .

Claims (2)

[Claims] 1. A sensor for detecting the insertion of a bill and activating a mechanism, a light-emitting element using near-infrared rays, a light-receiving element receiving data from the light-emitting element, and a data from the light-receiving element as a genuine bill. An apparatus for judging the authenticity of a bill by comparing the data with data, wherein an element for judging a color is added to the light emitting element area. 2. The apparatus according to claim 1, wherein the color determination element is a red LED.