JP2003272021A - Authenticity determining device and media issuing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a practical authenticity determining device capable of improving the accuracy in determining the authenticity of a media, preventing the increase of a time used for determining the authenticity of the media, and having high security. <P>SOLUTION: This authenticity determining device 20 reads the scanning pattern data and the media characteristic data stored in a magnetic stripe 2 of the media 1 taken in a device body, and the microwave is applied and scanned on the media 1 on the basis of the scanning pattern data. A feature value of the reflected wave from the media 1 obtained by the scanning is acquired, and the similarity of the acquired feature value and the media featuring data is calculated. The authenticity of the media 1 is determined on the basis of the calculated similarity. As a different scanning pattern can be gotten on each media 1, the forgery of the media 1 can be surely prevented, and the security can be improved. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an authenticity discriminating apparatus for discriminating the authenticity of a medium containing a resonator such as a conductive fiber.
And a medium issuing device that issues the above medium.

[0002]

2. Description of the Related Art Conventionally, it has been proposed to mix a resonator such as a conductive fiber into a medium such as paper money such as bills and securities, and resin cards such as credit cards and cash cards. This proposal is aimed at preventing the forgery of the medium and improving the accuracy of the authenticity discrimination of the medium (discrimination as to whether or not the medium is a forgery medium).

The resonator resonates when irradiated with a microwave of a specific frequency. The microwave frequency at which the resonator resonates is determined by the length of the resonator. The arrangement of the resonators in the medium can be obtained by scanning the medium with a microwave having a specific frequency and detecting a reflected wave or a transmitted wave from the medium at that time. Since the base material of the medium in which the resonators are mixed is molded from a raw material in which a large number of resonators are mixed, the number of resonators mixed in the medium (base material) and the number of resonators in the medium (base material) The arrangement is different even if the medium is formed by molding the base material from the same raw material.

The conventional medium issuing device scans the medium in a preset scanning pattern, acquires the characteristic amount of the waveform of the reflected wave or the transmitted wave detected at that time, and uses this as the characteristic of the medium. Recording is performed on a magnetic stripe or an IC chip provided on the medium. The medium issuing device issues a medium in which the characteristics of the medium (medium characteristic data) are recorded.

Further, the conventional authenticity discriminating apparatus scans the medium with a preset scanning pattern, and acquires the characteristic amount of the waveform of the reflected wave or the transmitted wave detected at that time. The authenticity determination device compares the characteristic amount acquired here with the medium characteristic data read from the medium, and calculates the degree of similarity.
If the calculated similarity is equal to or more than the predetermined amount, it is determined that the medium is a true medium, and if the calculated similarity is less than the predetermined amount, it is determined that the medium is a counterfeit medium.

The scan pattern in which the medium issuing device scans the medium and the scan pattern in which the authenticity determining device scans the medium are the same pattern.

As described above, by mixing the resonator in the medium, the characteristic peculiar to the medium can be kept waiting. Then, by using this characteristic to determine the authenticity of the medium,
Improves accuracy of authenticity determination for a medium and prevents forgery of the medium.

[0008]

However, in the conventional authenticity discriminating apparatus, the scanning pattern when the medium is irradiated with microwaves is the same for the same type of medium. Therefore, the scanning pattern of the medium in the authenticity determination device is
When known by a malicious person who is thinking about forging the medium,
For this person, it is not necessary to forge the arrangement of the resonators for the entire medium, and it is only necessary to forge the arrangement of the resonators only for the area of the scanning pattern. Therefore, if the scanning pattern is known, there is a high possibility that the security is broken (the medium is forged), and there is a demand for further improvement in security.

In order to improve security,
It is conceivable to scan the entire surface of the medium at the time of determining the authenticity of the medium, but in this case, there is a problem that the amount of data used for determining the authenticity of the medium becomes huge and the time required for the authenticity determination becomes long.

An object of the present invention is to improve the accuracy of authenticity determination of a medium and to suppress the increase in the time required for authenticity determination of the medium, thereby providing a practical authenticity determination apparatus with high security. To do.

Another object of the present invention is to provide a medium issuing device for issuing a medium whose authenticity is discriminated by the above-mentioned authenticity discriminating device.

[0012]

(1) The authenticity determination device of the present invention has the following configuration in order to solve the above problems.

The medium is irradiated with the electromagnetic wave based on the irradiation pattern acquisition means for acquiring the irradiation pattern of the electromagnetic wave set for the medium taken in the apparatus main body and the irradiation pattern of the electromagnetic wave acquired by the irradiation pattern acquisition means. An irradiation unit, and irradiation / detection means having a detection unit for detecting a reflected wave or a transmitted wave from the medium irradiated by the irradiation unit, and a reflected wave from the medium detected by the detection unit, or From the transmitted wave, obtain the reflection characteristics or transmission characteristics of the medium in the irradiation pattern,
An authenticity determining unit that determines the authenticity of the medium by using the reflection characteristic or the transmission characteristic acquired here.

In this structure, the irradiation pattern acquisition means acquires the irradiation pattern of the electromagnetic wave set for the medium taken into the apparatus body, and irradiates the medium with the electromagnetic wave based on the irradiation pattern acquired by the irradiation / detection means, The reflected wave or transmitted wave from the medium at that time is detected. The authenticity determination means acquires the reflection characteristic or the transmission characteristic of the medium from the detection waveform of the reflected wave or the transmitted wave from the medium when the medium is irradiated with the electromagnetic wave based on the irradiation pattern, and uses this to obtain the medium Determine the truth.

As described above, since the electromagnetic wave irradiation pattern set for the medium taken into the apparatus main body is acquired, the electromagnetic wave irradiation pattern (scanning pattern) can be made different for each medium. As a result, even if a malicious person who thinks about forgery of the medium knows the scan pattern of the specific medium, the scan pattern of the other medium is different, so that the specific medium is forged. Although there is a risk, it is possible to almost certainly prevent counterfeiting of other media. Further, in general, if the medium cannot be forged in a large amount, the cost for forging the medium will be higher, so that the medium that cannot be forged in a large amount is less likely to be forged.

Therefore, the forgery of the medium can be almost certainly prevented, and the security can be improved.

The irradiation pattern may be stored in a magnetic stripe provided on the medium, an IC chip, or the like, may be printed on the medium by a bar code, or may be managed by the center. You may do it.

If the irradiation pattern is stored in the medium, the irradiation pattern can be obtained directly from the medium taken into the apparatus main body, so that the time required to obtain the irradiation pattern can be shortened and, as a result, the medium can be obtained. It is possible to shorten the processing time required for the authenticity determination of. For this reason, it is preferable to store the irradiation pattern in the medium.

Further, in the process of determining the authenticity of the medium, the characteristic amount of the medium used for determining the authenticity by comparing with the reflection characteristic or the transmission characteristic acquired from the medium to be determined is also provided in the medium. It may be stored in a magnetic stripe or an IC chip, may be printed as a barcode on a medium, or may be managed by a center.

For the same reason as the above irradiation pattern,
It is preferable to store the characteristic amount of the medium in the medium.

Further, as a constitution for changing the irradiation pattern of the electromagnetic wave on the medium, the irradiation unit for irradiating the electromagnetic wave and the detecting unit for detecting the reflected wave or the transmitted wave from the medium are provided for the medium conveyed on the conveying path. This can be easily realized by a configuration of moving in the width direction or a configuration of arranging a plurality of irradiation units in the width direction of the medium, arranging a detection unit for each irradiation unit, and switching the irradiation unit that irradiates the medium with electromagnetic waves.

(2) Further, the medium issuing device of the present invention is
The following configuration is provided to solve the above problems.

An irradiation pattern generating means for generating an electromagnetic wave irradiation pattern for the medium taken in the apparatus main body, and an irradiation section for irradiating the medium with an electromagnetic wave based on the electromagnetic wave irradiation pattern generated by the irradiation pattern generating means, And an irradiation unit having a detection unit for detecting a reflected wave or a transmitted wave from the medium irradiated with the electromagnetic wave by the irradiation unit.
A detection unit, a medium characteristic acquisition unit that acquires a reflection characteristic or a transmission characteristic of the medium in the irradiation pattern from a reflected wave or a transmitted wave from the medium detected by the detection unit, and the medium characteristic acquisition unit. The above-mentioned reflection characteristic or transmission characteristic, and output means for outputting the irradiation pattern generated by the irradiation pattern generation means.

In this structure, the irradiation / detection means irradiates the medium taken in the apparatus main body with electromagnetic waves based on the irradiation pattern generated by the irradiation pattern generation means,
The reflected wave or transmitted wave from the medium at that time is detected. The medium characteristic acquisition means acquires the reflection characteristic or the transmission characteristic of the medium from the detection waveform of the reflected wave or the transmitted wave from the medium when the medium is irradiated with the electromagnetic wave based on the irradiation pattern, and the output means acquires it here. It outputs the reflection or transmission characteristics of the medium and the irradiation pattern.

When the output means is configured to record the reflection characteristic or transmission characteristic of the medium and the irradiation pattern on the magnetic stripe or IC chip provided on the medium, the reflection characteristic or transmission characteristic and the irradiation pattern of the medium are recorded. Can be memorized. Further, the output means may be configured to print the reflection characteristic or the transmission characteristic of the medium and the irradiation pattern on the medium with a barcode. Furthermore, the output means may be configured to transmit the reflection characteristic or transmission characteristic of the medium and the irradiation pattern to the center, and the reflection characteristic or transmission characteristic of the medium and the irradiation pattern may be managed by the center.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a medium issuing apparatus and an authenticity discriminating apparatus which are embodiments of the present invention will be described below.

First, a medium in which a resonator such as a conductive fiber is mixed will be briefly described. The medium referred to here is, for example, paper sheets such as banknotes and securities, and resin cards such as credit cards and cash cards.

FIG. 1 is a diagram showing a medium in which a resonator such as a conductive fiber is mixed. A magnetic stripe 2 for recording magnetic data is formed on the surface of the medium 1 (see FIG. 1A). When the medium 1 is issued, a medium issuing device described later records a microwave (electromagnetic wave) irradiation pattern and medium characteristic data on the magnetic stripe 2.
Appropriate characters and figures (not shown) on the front and back of the medium 1
Is drawn.

The medium 1 may be an IC card provided with an IC chip in place of the magnetic stripe 2, or a printing area for printing a microwave irradiation pattern and a bar code indicating feature amount data. May be provided.

A fibrous resonator 3 is mixed in the base material of the medium 1 as shown in FIG. 1 (B). The resonator 3 exists inside the base material and is not visible from the outside. The resonator 3 mixed in the base material may be a magnetic material or a non-magnetic material. It is preferable that the resonator 3 is relatively inexpensive and is resistant to rust. The non-magnetic resonator 3 is preferably fibrous non-magnetic stainless steel, fibrous copper or fibrous aluminum, and the magnetic resonator 3 is preferably fibrous magnetic stainless steel or fibrous nickel.

When the length of the resonator 3 mixed in the base material of the medium 1 is L, the resonator 3 has a wavelength λ of λ = 2 × L when it is irradiated with microwaves. Resonate. The resonators 3 mixed in the base material may all have the same length or different lengths. Here, description will be given below assuming that all the resonators 3 mixed in the base material have the same length.

The medium 1 is a raw material for its base material, for example, a viscous raw material in which pulp is melted for paper sheets, and PET (polyethylene terephthalate) for resin cards.
A large number of resonators 3 are mixed in a viscous raw material in which a resin is melted, the raw material is sufficiently stirred, and then printing or a magnetic stripe 2 is added to a formed base material. Therefore, even if the base material is the medium 1 molded from the same raw material, the number of resonators 3 existing in the base material and the arrangement of the resonators 3 in the base material are different.

Next, a medium issuing device according to an embodiment of the present invention will be described. FIG. 2 is a block diagram showing the configuration of the medium issuing device. The medium issuing device 10 irradiates a microwave to the control unit 11 that controls the operation of the main body, the transport unit 12 that transports the medium 1 loaded into the main body, and the medium 1 that is transported by the transport unit 12. , A reflected wave detecting unit 13 for detecting the reflected wave, and a characteristic amount acquired from the reflected wave detected by the reflected wave detecting unit 13 (medium characteristic data described later)
And a magnetic recording portion 14 for recording the data on the magnetic stripe 2 provided on the medium 1.

The transport section 12 is provided with a transport control section 12a for controlling the transport of the medium 1 on the transport path and a transport position detecting section 12b for detecting the transport position of the medium 1 being transported on the transport path. There is. The transport controller 12a controls the drive of a motor (not shown) to transport the medium 1 loaded in the main body. As shown in FIG. 3, the transport position detector 12b has a plurality of sensors 12c that optically detect the presence or absence of the medium 1. The plurality of sensors 12c is the medium 1
Are arranged along the transport direction of. Transport position controller 1
2b indicates the medium 1 based on the timing when the medium 1 is detected by each sensor 12c, the timing when the medium 1 is no longer detected, and the transport speed of the medium 1 in the transport path.
The transport position (the position of the medium 1 on the transport path) is detected.

Note that FIG. 3A is a schematic top view of the transport path, and FIG. 3B is a schematic side view of the transport path.

The reflected wave detection unit 13 irradiates the medium 1 with microwaves and detects a reflected wave at that time, and a sensor drive unit for moving the microwave sensor 13a in the width direction of the medium 1. 13b.
The microwave sensor 13a includes a radio wave generator having an oscillation element such as a Gunn diode that generates a microwave of a specific frequency, an antenna that emits a microwave generated by the radio wave generator (irradiates the medium 1), and the antenna. The radio wave detection unit having a receiving element for detecting the reflected wave from the medium 1 received in 1. The microwave sensor 13a is configured such that the circulator sends the microwave generated by the radio wave generation unit to the antenna and the reflected wave from the medium 1 received by the antenna to the radio wave detection unit. Since the microwave sensor 13a having this configuration is well known, its description is omitted here.

The microwave sensor 13a is movably attached to a bar extending in the width direction of the conveying path as shown in FIG. The sensor drive unit 13b controls the movement of the microwave sensor 13a in the width direction of the transport path. The moving direction of the microwave sensor 13a is a direction substantially perpendicular to the transport direction of the medium 1 in the transport path.

The magnetic recording section 14 includes a magnetic recording head 14a.
Have. The magnetic recording head 14a is the microwave sensor 1
The medium 1 that is transported in the transport path behind 3a
Of the magnetic stripe 2.

Next, the process of issuing the medium 1 in the medium issuing device 10 will be described. FIG. 4 is a flowchart showing the medium issuing process.

When the medium issuing device 10 detects that the medium 1 has been loaded into the main body (s1), the control unit 11 generates scan pattern data indicating a microwave scanning pattern for the medium 1 (s2). This s2 corresponds to the irradiation pattern generating means in the present invention. An example of irradiation pattern generation is shown below.

For example, in s2, the n-th order function Y = a _n X ⁿ + a _n-1 X ^n-1 + a _n-2 X ^n-2 + ... + a
_This is a process of randomly generating n + 1 coefficients (a _{0 to} a _n ) for ₁ X + a ₀ . For example, the above n + 1 coefficients are generated by using a random number generated in accordance with the input timing of the medium 1. The variable X in the n-th order function is the position in the transport direction of the medium 1 to which the microwave sensor 13 irradiates the microwave, and the tip of the medium 1 transported along the transport path is X = 0.

If the order of the n-th order function is increased, the microwave scanning pattern (irradiation pattern in the present invention) for the medium 1 described later becomes complicated and the security can be improved. Since the processing related to the movement control becomes complicated, the processing speed decreases. Therefore, the order of the n-th order function may be set so that appropriate security can be applied according to the type of the medium 1 to be issued.

In the medium issuing device 10, when the tip of the medium 1 reaches the position where the microwave is irradiated by the microwave sensor 13a (s3), the sensor driving unit 13b generates the nth-order function generated in s2 and the conveying position. Based on the transport position of the medium 1 detected by the detection unit 12b, the microwave sensor 13a is moved in the width direction of the medium 1 and scanning for irradiating the medium 1 with microwaves is started (s4). The sensor drive unit 13b has a microwave sensor 13a at the rear end of the medium 1.
The movement of the microwave sensor 13a in the width direction of the medium 1 is controlled until it passes the position where the microwave is irradiated by. When the rear end of the medium 1 passes the position where the microwave sensor 13a irradiates the microwave (s5), the medium issuing device 10 stops the scanning of the medium 1 started in s4 (s6). Of course, another function having one or more parameters may be used for the irradiation pattern (sin function, c
os function, etc.).

The medium 1 is scanned, for example, as shown in FIG. 5A, and the microwave sensor 13a detects the reflected waveform shown in FIG. 5B (the level of the reflected wave with respect to the position of the medium 1 in the transport direction). To be done. The reflected wave detection unit 13 A / D-converts the level of the reflected wave from the medium 1 detected by the microwave sensor 13a between s4 and s6 by an A / D converter (not shown), and sends it to the control unit 11. You are typing. The control unit 11 cumulatively stores the level of the reflected wave from the medium 1 input from the reflected wave detection unit 13 in a memory (not shown). Therefore, when the scanning of the medium 1 is stopped in s6, the digital data of the reflection waveform shown in FIG. 5B is stored in the memory of the control unit 11.

The medium issuing device 10 determines the characteristics of the reflected waveform from the digital data of the reflected waveform stored in the memory.
For example, the characteristic amount indicating the size of the waveform, the way of changing the waveform, and the position where the waveform changes is extracted and acquired as medium characteristic data indicating the characteristic of the medium 1 (s7). s7 corresponds to the medium characteristic acquisition means in the present invention. The medium issuing device 10 records the parameter (scan pattern data) of the function generated in s2 and the medium characteristic data acquired in s7 on the magnetic stripe 2 of the medium 1 by the magnetic recording head 14a (s8), and ends this processing. To do.

At s8, the medium characteristic data and the scanning pattern data are encrypted and recorded on the magnetic stripe 2. Further, with respect to the scan pattern data, n + 1 coefficients are encrypted and recorded. Therefore, even if the medium characteristic data or the scanning pattern data recorded on the magnetic stripe 2 is read, the medium characteristic data or the operation pattern data cannot be confirmed without knowing the decoding method or the encryption key. .

The medium 1 is issued after the medium issuing device 10 has performed the medium issuing process.

Next, an authenticity determining device for determining the authenticity of the issued medium 1 will be described. FIG. 6 is a block diagram showing the configuration of the authenticity determination device. The authenticity determination device 20 is
The control unit 21 that controls the operation of the main body, the transport unit 22 that transports the medium 1 loaded into the main body, and the medium 1 that is transported by the transport unit 22 are irradiated with microwaves and the reflected wave is detected. And a magnetic reading unit 2 for reading the medium characteristic data recorded in the magnetic stripe 2 provided on the medium 1 and the scanning pattern data.
4 and 4 are provided.

Similar to the medium issuing device 10, the transport unit 22 detects a transport control unit 22a for controlling the transport of the medium 1 in the transport path, and the transport position of the medium 1 transported in the transport path. A transport position detector 22b is provided. As shown in FIG. 7, the transport position detection unit 22b has a plurality of sensors 22c that optically detect the presence or absence of the medium 1 arranged along the transport direction of the medium 1. The transport position control unit 22b determines the transport position of the medium 1 (on the transport path) from the timing at which the medium 1 is detected by each sensor 22c, the timing at which the medium 1 is no longer detected, and the transport speed of the medium 1 on the transport path. The position of the medium 1) is detected.

Note that FIG. 7A is a schematic top view of the transport path, and FIG. 7B is a schematic side view of the transport path.

The reflected wave detector 23 is also used in the medium issuing device 1 described above.
Similarly to 0, the medium 1 is provided with a microwave sensor 23a for irradiating the medium 1 with a microwave and detecting a reflected wave at that time, and a sensor drive unit 23b for moving the microwave sensor 23a in the width direction of the medium 1. There is. Microwave sensor 23a
Is the same as the microwave sensor 13 a described in the medium issuing device 10. In addition, the microwave sensor 23a
Also, as shown in FIG. 7, it is movably attached to a bar hung in the width direction of the transport path. Sensor drive unit 22b
Controls the movement of the microwave sensor 23a in the width direction of the transport path (direction substantially perpendicular to the transport direction of the medium 1).

The magnetic reading section 24 has a magnetic reproducing head 24a for reading the data stored in the magnetic stripe 2. The magnetic reproducing head 24a is the microwave sensor 23.
It is arranged in front of a and in contact with the magnetic stripe 2 of the medium 1 being conveyed on the conveying path.

As is clear from the above description, in the authenticity discriminating device 20, the magnetic recording unit 14 provided behind the microwave sensor 13a in the medium issuing device 10 is provided in front of the microwave sensor 23a. In this configuration, the magnetic reading unit 24 is replaced.

Next, the authenticity determination processing of the medium 1 in the authenticity determination device 20 will be described. FIG. 8 is a flowchart showing the authenticity determination process in the authenticity determination device. When the authenticity determination device 20 detects that the medium 1 is loaded into the main body (s11), the magnetic reproducing head 24c reads the medium characteristic data and the scanning pattern data stored in the magnetic stripe 2 of the medium 1 ( s12). Control unit 2
1 decodes the medium characteristic data and the scanning pattern data read from the magnetic stripe 2 of the medium 1 in s12 (s13).

A program for decoding the medium characteristic data and the scanning pattern data read from the magnetic stripe 2 is stored in the ROM (not shown) provided in the controller 21 in the authenticity discriminating device 20. .

When the tip of the medium 1 reaches the position where the microwave sensor 13a irradiates the microwave (s14), the authenticity discrimination device 20 detects the microwave sensor 23a based on the scanning pattern data decoded in s13. The medium 1
Scanning for irradiating the medium 1 with microwaves is started while moving in the width direction of (s15). The sensor drive unit 23b is
The movement of the microwave sensor 23a in the width direction of the medium 1 is controlled until the rear end of the medium 1 passes a position where the microwave sensor 23a irradiates the microwave. When the rear end of the medium 1 passes a position where the microwave sensor 23a irradiates microwaves (s1).
6), the scanning of the medium 1 started in s15 is stopped (s1
7).

Between s15 and s17, the medium 1
The scan pattern scanned by is the same as the scan pattern scanned by the medium issuing device 10 when the medium 1 is issued.

Since the variable X in the function indicating the scanning pattern is not the time but the position in the transport direction of the medium 1 as described above, the medium issuing device 10 and the authenticity determining device 20.
There is also no influence of the difference in the transport speed of the medium 1 between and.

The reflected wave detector 23 detects the level of the reflected wave from the medium 1 detected by the microwave sensor 23a between s15 and s17 by an A / D converter (not shown).
It is input to the control unit 21 after being / D converted. Control unit 21
Stores the level of the reflected wave from the medium 1 input from the reflected wave detector 23 in a memory (not shown). Therefore, when the scan on the medium 1 is completed (s
When the scanning is stopped at 17, the digital data indicating the waveform of the reflected wave from the medium 1 (reflected waveform) is stored in the memory of the control unit 21.

The medium issuing device 10 acquires, as medium detection data, the characteristic amount of the reflected waveform stored in the memory, for example, the size of the waveform, the way of changing the waveform, and the position where the waveform changes. In (s18) and s12, the medium characteristic data read from the magnetic stripe 2 of the medium 1 and decoded in s13 is compared with the medium detection data acquired here to calculate the degree of similarity (s19). Authenticity determination device 2
In 0, if the similarity calculated in s19 is equal to or more than a predetermined amount, the medium 1 is determined to be a true medium (s2
0, s21), on the contrary, if it is less than the predetermined amount, the medium 1 is discriminated as a counterfeit medium (s20, s22).

As described above, since the scanning pattern of the microwave for the medium 1 as the authenticity determination target is determined by the nth-order function randomly generated by the medium issuing device 10 when the medium 1 is issued, it is determined for each medium 1. The scanning pattern can be different. Therefore, even if the scan pattern for the specific medium 1 is known to a malicious person who is thinking of forgery of the medium 1, the scan pattern is different for the other medium 1. Even if there is a risk of being forged, it is possible to almost certainly prevent other medium 1 from being forged. Generally, when the medium 1 is forged, the medium 1
If it is not possible to counterfeit a large amount of, the cost for counterfeiting the medium 1 will be higher. Therefore, with respect to the medium 1 that cannot be forged in a large amount, the possibility that the medium 1 is forged is extremely low. Therefore, the forgery of the medium 1 can be almost certainly prevented, and the security can be improved.

Further, since the entire surface of the medium 1 is not scanned but the scanning pattern determined for each medium 1 is used, the time required for the processing at the time of issuing the medium and the processing at the time of authenticity determination are sufficiently increased. Can be suppressed to.

In the above embodiment, the medium issuing device 1
In 0, the medium characteristic data and the scan pattern data are recorded in the magnetic stripe 2. However, these data may be transmitted to the center without being recorded in the medium 1 and managed by the center.

In the above embodiment, the microwave sensor 13a, 23a detects the reflected wave from the medium 1. However, the transmitted wave of the medium 1 may be detected. In this case, a radio wave generator that irradiates the medium 1 with microwaves and a radio wave detector that detects a transmitted wave from the medium 1 are arranged at positions facing each other with the medium conveyed through the conveyance path. Further, the sensor drive units 13b and 23b that move the radio wave generator and the radio wave detector in synchronization with each other in the width direction of the medium 1 to be transported on the transport path are required. As described above, when detecting the transmitted wave instead of the reflected wave from the medium 1, the configuration becomes slightly complicated. Therefore, it is preferable to detect the reflected wave as described in the above embodiment.

Next, a medium issuing device and an authenticity determining device according to another embodiment of the present invention will be described. FIG. 9 is a diagram showing a configuration of a medium issuing device according to this another embodiment, and FIG. 10 is a schematic top view of a carrying section of the medium issuing device according to this another embodiment. The difference from the medium issuing device 10 of the above-described embodiment in configuration is that four microwave sensors A, B, C, and D are fixedly arranged in the width direction of the medium 1 to be conveyed on the conveying path, and four microwave sensors are arranged. The point is that the sensor switching unit 13c that enables one of the microwave sensors A, B, C, and D is provided.

The four microwave sensors A, B,
Since C and D are fixed, the sensor driving unit 13b described in the above embodiment is not provided.

Four microwave sensors A, B, C, D
Are arranged in a direction substantially perpendicular to the medium transport direction in the transport path. Further, the sensor switching unit 13c can enable only one microwave sensor at the maximum. Therefore, multiple microwave sensors are not active at the same time.

Next, the medium issuing process in the medium issuing device 10 of this embodiment will be described. The medium issuing device 1 of this embodiment also executes the processing shown in FIG. However,
The scan pattern data generated in s2 and the operation from the start of scanning the medium 1 in s4 to the stop of scanning of the medium 1 in s6 are different.

At s2, n character strings in which A, B, C and D are randomly arranged are generated as scan pattern data. For example, a character string of CCDAAD ... A is generated.

The n-th character string generated in s2 is shown in FIG.
, The microwave sensor A, B, C, which is effective for each region obtained by dividing the medium 1 into n at equal intervals in the transport direction,
It is data showing D. In the above example, the microwave sensor C is valid in the area a ₁ , the microwave sensor C is valid in the area a ₂ , the microwave sensor D is valid in the area a ₃ , and so on. ... is a character string microwave sensor B becomes effective in the area of a _n.

From the start of the scanning of the medium 1 in s4 to the stop of the scanning of the medium 1 in s6, the sensor switching unit 13c
Is based on the character string generated in s2 and the transport position of the medium 1 detected by the transport position detection unit 12b,
The microwave sensors A, B, C and D to be activated are switched. Specifically, in the sensor switching unit 13c, the medium 1 is the same as in FIG.
A microwave sensor A that is validated based on a character string each time the n-divided area shown in 1 is conveyed.
Select B, C and D.

The radio wave generators of the microwave sensors A, B, C and D, which are activated by the sensor drive section 13c, irradiate the medium 1 with microwaves, and the reflected wave is detected by the radio wave detector, and A / The level of the D-converted reflected wave is input to the control unit 11. On the contrary, the radio wave generators of the microwave sensors A, B, C, and D that are not enabled by the sensor driving unit 13c are the medium 1
Is not irradiated with microwaves, and the output of the radio wave detector is not A / D converted and input to the control unit 11.

Further, since the number of microwave sensors that the sensor switching unit 13c is effective is one at the maximum, microwaves are emitted from a plurality of microwave sensors, and the microwaves interfere with each other. Also, stable reflected wave detection can be performed.

In the processing of s4 to s6, the medium 1
Are scanned as shown in FIG. 12 (A), for example. In addition, the memory of the control unit 11 stores the digital data of the reflection waveform shown in FIG.

The scanning pattern data recorded on the medium 1 by the medium issuing device 10 in s8 is the character string of n columns created in s2.

In the above description, s2 is A, B, C, D.
It is supposed to generate n character strings consisting of A, B,
It is also possible to generate an n-number sequence consisting of 0, 1, 2, and 3 corresponding to C and D, respectively.

Next, an authenticity determining device for determining the authenticity of the medium 1 issued by the medium issuing device 10 will be described. FIG. 13 is a diagram showing the configuration of the authenticity determining device, and FIG. 14 is a top view of the transport path. The difference from the authenticity determination device 20 of the above-described embodiment is that the four microwave sensors A ′, B ′, C ′, and D ′ are fixedly arranged in the width direction of the medium 1 to be conveyed on the conveyance path. The point is that the sensor switching unit 23c that enables one of the four microwave sensors A ′, B ′, C ′, and D ′ is provided.

The four microwave sensors A ',
Since B ′, C ′, and D ′ are fixed, the sensor driving unit 23b described in the above embodiment is not provided. Also, four microwave sensors A ′, B ′, C ′,
D ′ are arranged in a direction substantially perpendicular to the transport direction of the medium 1 in the transport path.

Next, the authenticity determination processing in the authenticity determination device 20 of this embodiment will be described. The authenticity determining device 20 of this embodiment also executes the processing shown in FIG. 8 similarly to the authenticity determining device of the above embodiment. However, the operation of detecting the reflected wave from the medium 1 from the start of the scan of the medium 1 in s15 to the stop of the scan of the medium 1 in s17 is different.

During the period from s15 to s17, the sensor drive unit 2
Reference numeral 3c denotes the microwave sensors A ', B', C ', D that are enabled based on the character string (scan pattern data) read in s12 and the transport position of the medium 1 detected by the transport position detection unit 22b. 'Switch. Specifically, the sensor switching unit 23c is configured such that the medium 1 has n shown in FIG.
Microwave sensors A ′, B ′, C ′ that are validated based on the character string each time the length of the divided area is conveyed,
Select D '.

The radio wave generators of the microwave sensors A ', B', C'and D'validated by the sensor driving section 23c are the medium 1
Microwaves are radiated to the object, the reflected wave is detected by a radio wave detector, and the level of the A / D converted reflected wave is controlled by the control unit 21.
To enter. On the contrary, the radio wave generators of the microwave sensors A ′, B ′, C ′, and D ′ that are not activated by the sensor driving unit 23c do not irradiate the medium 1 with microwaves, and the output of the radio wave detector is not generated. Is A / D converted to control unit 1
It is never entered as 1.

Further, since the sensor switching unit 23c enables only one microwave sensor at the maximum, microwaves are emitted from a plurality of microwave sensors, and the microwaves interfere with each other. Also, stable reflected wave detection can be performed.

In the processing of s15 to s17, the medium 1 is scanned in the same pattern as that at the time of issuing, as shown in FIG. 12 (A). In addition, the memory of the control unit 21 is shown in FIG.
Digital data of the reflection waveform shown in FIG. 2 (B) is stored.

The processing after s17 is the same as the processing described in the above embodiment. The description is omitted here.

As described above, the medium issuing device 10 and the authenticity / counterfeiting device 20 of this embodiment can also make the scanning pattern different for each medium 1 as in the above-described embodiment. This can be almost certainly prevented, and security can be improved.

Also, in this embodiment, the medium issuing device 10
Since the microwave sensors A, B, C, D and the microwave sensors A ′, B ′, C ′, D ′ of the true / false determination device 20 are fixed, more stable detection of reflected waves can be performed.

In the above embodiment, four microwave sensors are arranged side by side, but the number of microwave sensors may be five or more, or may be two or three. .

Further, both the magnetic data recording unit 14 and the magnetic data reading unit 24 may be provided so that the processes shown in FIGS. 4 and 8 can be selectively performed. With this configuration, it is possible to configure an apparatus that can both issue the medium 1 and determine the authenticity of the medium 1.

[0089]

As described above, according to the present invention, since the scanning pattern can be made different for each medium, forgery of the medium can be almost certainly prevented, and the security can be improved.

[Brief description of drawings]

FIG. 1 is a diagram showing a medium.

FIG. 2 is a diagram showing a configuration of a medium issuing device according to an embodiment of the present invention.

FIG. 3 is a diagram showing a medium transport path in the medium issuing device according to the embodiment of the present invention.

FIG. 4 is a flowchart showing a medium issuing process in the medium issuing device according to the embodiment of the present invention.

FIG. 5 is a diagram illustrating a scan pattern of a medium by the medium issuing device according to the embodiment of the present invention.

FIG. 6 is a diagram showing a configuration of a true / false determination device according to an embodiment of the present invention.

FIG. 7 is a diagram showing a medium transport path in the authenticity determination device according to the embodiment of the present invention.

FIG. 8 is a flowchart showing a true / false determination process in the true / false determining apparatus according to the embodiment of the present invention.

FIG. 9 is a diagram showing a configuration of a medium issuing device according to another embodiment of the present invention.

FIG. 10 is a diagram showing a medium transport path in a medium issuing device according to another embodiment of the present invention.

FIG. 11 is a diagram for explaining scan pattern data in a medium issuing device according to another embodiment of the present invention.

FIG. 12 is a diagram illustrating a scanning pattern of a medium by the medium issuing device according to the embodiment of the present invention.

FIG. 13 is a diagram showing a configuration of an authenticity determination device which is another embodiment of the present invention.

FIG. 14 is a diagram showing a medium transport path in an authenticity determination device according to another embodiment of the present invention.

[Explanation of symbols]

1-medium 3-resonator 10-Media issuing device 11-control unit 12-transport unit 13-Reflection amount detection unit 14-Magnetic recording unit 20-Authenticity determination device 21-Control unit 22-conveyor 23-Reflection amount detector 24-magnetic reader

Continued front page    (72) Inventor Naoyuki Wakabayashi             Shiokyo-ku, Kyoto-shi, Kyoto Prefecture             801 Kudo-cho Omron Co., Ltd. F-term (reference) 2C005 HA02 HB09 HB10 HB20 JA02                       JB24 KA03 KA15 KA40 LA06                       LA18 LB04 LB18 LB34 LB42                       LB45 LB46                 3E041 AA01 AA02 AA03 BA20 BB07                       CA01 CB03 DA01 DB01                 5B035 AA15 BB02                 5B058 CA31 KA02 KA04 KA08 KA13                       KA31 KA32 YA20

Claims (7)

[Claims] 1. An electromagnetic wave is applied to the medium based on an irradiation pattern acquisition unit that acquires an irradiation pattern of an electromagnetic wave set for a medium taken into the apparatus main body, and an irradiation pattern of the electromagnetic wave acquired by the irradiation pattern acquisition unit. Irradiation / irradiation having an irradiation unit for irradiating
From the reflected wave or the transmitted wave from the medium detected by the detection unit and the detection unit, the reflection characteristic or the transmission characteristic of the medium in the irradiation pattern is acquired, and the reflection characteristic or the transmission characteristic acquired here is used. An authenticity discriminating apparatus comprising: an authenticity discriminating means for discriminating the authenticity of a medium. 2. The authenticity discrimination device according to claim 1, wherein the irradiation pattern acquisition means reads the irradiation pattern stored in the medium loaded in the device body. 3. The irradiation pattern acquisition means includes means for reading the characteristic amount of the reflection characteristic or the transmission characteristic of the medium stored in the medium loaded in the apparatus main body, and the authenticity determination means is the above-mentioned. The authenticity of the medium is determined by comparing the characteristic amount extracted from the reflection characteristic or the transmission characteristic of the medium in the irradiation pattern with the characteristic amount of the reflection characteristic or the transmission characteristic read from the medium. The described authenticity determination device. 4. A transport means for transporting the medium taken in the apparatus main body, wherein the irradiation / detection means is based on the irradiation pattern of the electromagnetic wave acquired by the irradiation pattern acquisition means, and the irradiation unit and the irradiation unit. The authenticity determination device according to claim 1, wherein the detection unit is moved in the width direction of the medium being conveyed by the conveying unit. 5. A transport means for transporting the medium taken in an apparatus main body is provided, wherein the irradiation / detection means has a plurality of the irradiation parts, and the detection part corresponding to each irradiation part, A plurality of irradiation units are arranged in the width direction of the medium being conveyed by the conveying unit together with the corresponding detecting units, and the electromagnetic waves are emitted based on the irradiation pattern of the electromagnetic waves acquired by the irradiation pattern acquiring unit. The authenticity determination device according to any one of claims 1 to 3, wherein the irradiation unit for irradiation is switched. 6. Irradiation for irradiating the medium with electromagnetic waves based on the irradiation pattern generating means for generating an electromagnetic wave irradiation pattern for the medium taken in the apparatus body, and the electromagnetic wave irradiation pattern generated by the irradiation pattern generating means. And a detector having a detector that detects a reflected wave or a transmitted wave from the medium irradiated with electromagnetic waves by the irradiation unit.
A detection unit, a medium characteristic acquisition unit that acquires a reflection characteristic or a transmission characteristic of the medium in the irradiation pattern from a reflected wave or a transmitted wave from the medium detected by the detection unit, and the medium characteristic acquisition unit acquires A medium issuing device comprising: the reflection characteristic or the transmission characteristic described above; and an output unit that outputs the irradiation pattern generated by the irradiation pattern generation unit. 7. The output means records the reflection characteristic or transmission characteristic acquired by the medium characteristic acquisition means and the irradiation pattern generated by the irradiation pattern generation means on a medium taken in the apparatus main body. The medium issuing device described in 1.