JP2001344573A - Ic card processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an IC card processor capable of satisfactorily maintaining detection sensitivity of an illegal card even though a control board is separated from a card reader. SOLUTION: A high frequency radio wave emitted from a high frequency oscillation circuit 70 provided in a card housing part is induced to the lead wire of the illegal card inserted into the card housing part, a signal appearing on a contact terminal coming into contact with the external terminal of the card connected to the lead wire is received by a receiving circuit 45 provided in the card housing part, and the inserted card is decided to be an illegal card on the basis of its reception output. Because the lead wire of the illegal card is made a receiving antenna for receiving radio waves emitted in the housing, the influence to the reception output due to the thickness and position of the lead is small and the illegal card can reliably be detected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an IC card processing device for reading / writing data from / to an IC card provided with a memory circuit or the like therein. The present invention relates to an IC card processing device having a function of detecting an unauthorized card from which a line has been drawn.

[0002]

2. Description of the Related Art As is well known, an IC card differs from a magnetic recording card in that various kinds of information are electrically stored in a memory in the card, and is connected via terminals provided on an outer surface of the card. It is formed to exchange information with an external device to be connected.

FIG. 10 shows an example of an IC card 1 in which an integrated circuit including a memory and the like is built.
A plurality of external terminals 2, 2,... Connected to an internal integrated circuit are provided at a predetermined position near the front end of one side 1a of the card 1.
・ 2 are provided.

[0004] In such an IC card, unless predetermined information is electrically exchanged via an external terminal, it is impossible to know the unique information and the amount information of the card owner.
Compared with a magnetic card, there is an advantage that unauthorized use is less likely to occur and the contents are not changed by external magnetism.

[0005] An IC card processing device for reading and writing information from and to the IC card receives the IC card inserted into the card insertion slot at least up to a predetermined position including an external terminal portion of the IC card. A contact terminal is brought into contact with an external terminal of the card, and information is exchanged via the contact terminal.

However, there is a possibility that an unauthorized use of such an IC card processing device may be performed by an unauthorized card 3 as shown in FIG. 11 and an information decoding device (not shown).

That is, the illegal card 3 intended for unauthorized use is provided with external terminals 4, 4,..., 4 at the same position in the same external shape as the regular IC card 1, and at least a part of the external terminals. Is provided with a lead wire 5 for extracting a signal.

Then, such an unauthorized card 3 is inserted into an IC card processing device, the external terminal 4 is brought into contact with a contact terminal in the device, and an information decoding device is connected to the end of the lead wire 5 to connect the IC card processing device. There is a concern that the information exchange format and data between the card processing device and the card will be decrypted, and based on the result of the decryption, the same information as the regular card will be exchanged. There is.

In the case of a card processing device in which the IC card is completely drawn into the device, such unauthorized use is prevented mechanically or optically from the presence of the lead wire, thereby preventing it from occurring. However, in a card processing apparatus for manually inserting and ejecting a card, an IC
Because the rear side of the card is exposed from the card slot,
If the lead is pulled out from the exposed portion, the presence of the lead cannot be detected mechanically or optically.

As a prior art for solving this problem, an electrode plate 13 is provided between a card insertion slot 11 and contact terminals 12, 12,... , 14 are arranged so as to face the insertion card, and the electrode plates 13, 14 and the contact terminals 12 are arranged.
And a capacitance determining circuit 15 for determining whether or not the open capacitance is greater than or equal to a predetermined value. When the unauthorized card 3 is inserted to a position where each external terminal 4 is brought into contact with each contact terminal 12, There is a method of detecting an increase in the capacitance between the lead wire 5 of the fraudulent card 3 and the electrode plates 13 and 14 and determining that the accepted card is a fraudulent card.

However, as described above, the capacitance between the electrode plate and the lead wire significantly changes depending on the distance from the electrode plate for detecting the lead wire of the unauthorized card to the conductor and the thickness of the conductor itself. However, when an extremely thin lead wire is located far from the electrode plate, the capacitance between them is extremely small, and it is extremely difficult to reliably determine the presence or absence of the lead wire from this small change in capacitance.

Further, in this method, a conductive plate such as an electrode plate must be attached to the card accommodating portion in order to satisfy strict conditions, and the shape of the card accommodating portion is strongly restricted. Due to the presence of the plate, for example, when a short cut card or paper piece is inserted, the card or paper piece or the like cannot be ejected from the card accommodating portion, causing a problem that the card is jammed.

Therefore, Japanese Patent No. 2819445, which is assigned to the same applicant as the present invention, solves the above-mentioned problem, and is not affected by the thickness and position of the lead wire.
There has been disclosed a card processing device capable of reliably detecting the presence of an incorrect lead wire without restricting the shape of the C card processing device.

[0014] In the IC card processing apparatus according to Japanese Patent No. 2819445, an IC card inserted from a card insertion slot provided on one surface of a housing is received to a predetermined position of a card accommodating portion, and its external terminals serve as contact terminals. Upon contact, the switch element cuts off the continuity between the contact terminal and the processing circuit, and a radio wave emitted into the housing from a high-frequency signal source located at a position distant from the card accommodating portion moves the input terminal to the contact terminal over the shortest distance. Is received via the contact terminal by the receiving circuit connected in step (a), and it is determined based on the magnitude of the output whether or not a lead wire for illegal signal extraction is connected to the external terminal of the IC card. .

That is, Japanese Patent No. 289444
As shown in FIG. 13, the IC card processing device according to No. 5 includes an IC card inserted into the IC card reader mechanism 210.
In order to detect a fraudulent card in which the lead wire 105 is pulled out from the terminal of the card, a plurality of clock signal sources CL1 and
CL2,..., A signal of a specific frequency is oscillated from the conductor pattern 153 serving as an antenna line of the oscillation circuit 152 on the control board. By inducing a signal of a specific frequency to the lead wire 105 drawn out from the contact terminal 211, the reception circuit 145 mounted in the card reader mechanism 210 has a function of detecting the signal.

[0016]

However, in the IC card processing apparatus disclosed in Japanese Patent No. 2819445 as described above, the degree of freedom in designing the card reader mechanism is increased, but the control board and the card reader mechanism are not required. In the case of a structure separated from the oscillating circuit, if an object corresponding to a shield is inserted between the oscillation circuit and the receiving circuit, there is a problem that the detection sensitivity of an unauthorized card is deteriorated.

Another problem is that stable detection in the function of discriminating between a regular card and a fraudulent card cannot be performed because the antenna pattern of the oscillation circuit differs due to a design change or the like.

The present invention has been made in view of the above circumstances, and has a high-frequency oscillation circuit and a receiving circuit arranged in a predetermined positional relationship on the card reader side, so that the control board and the card reader can be connected to each other. Is separated from the control
Even if an object equivalent to a shield is inserted between the robot and the card reader, the detection sensitivity for unauthorized cards can be improved and the antenna pattern of the oscillation circuit can be changed due to a design change or the like. It is an object of the present invention to provide an IC card processing device capable of performing stable detection in a function of discriminating between a regular card and an unauthorized card even if the cases differ.

[0019]

According to the present invention, in order to solve the above-mentioned problems, (1) a card reader for receiving an IC card inserted from a card insertion slot to a predetermined position; A contact terminal for contacting an external terminal of the IC card; a high-frequency oscillation circuit used as a signal source for emitting a radio wave in the card reader; and a radio wave emitted by the high-frequency oscillation circuit in the card reader. A receiving circuit that receives the signal via the contact terminal, converts the signal into a DC potential, and outputs the signal; and, based on an output from the receiving circuit, extracts an illegal signal to an external terminal of the IC card received by the card reader. A determination circuit for determining whether or not the lead wire of the IC card is connected; and a process of performing read / write processing on the IC card based on an output of the determination circuit. An antenna line for emitting a radio wave by connecting an output line of the high-frequency oscillation circuit to a part of a connection bundle connected to a circuit network located at a position separated from the card reader. An IC card processing device is provided which is used as a device.

According to the present invention, in order to solve the above-mentioned problems, (2) an unused line in the connection bundle or a high impedance in the connection bundle is provided as a part of the connection bundle. The IC card processing device according to (1), wherein the used line is used.

According to the present invention, in order to solve the above-mentioned problems, (3) the card reader includes a sensor for detecting that an IC card is received at the predetermined position of the card reader; A continuity between the contact terminal and the processing circuit, which is disposed near a terminal and is connected using a used line that becomes high impedance in the connection bundle when the sensor detects acceptance of the IC card. And a switch element for disconnecting the IC card from the external terminal of the IC card received by the card reader based on an output of the receiving circuit when the switch element is open. The IC card processing device according to (1) or (2), wherein it is determined whether or not a lead wire for drawing is connected.

That is, the IC card processing apparatus according to the present invention can be summarized, as shown in FIG. 1, by replacing the oscillation circuit provided on the control board in the above-mentioned Japanese Patent No. 2819445 with a card reader 21.
A high-frequency oscillation circuit 70 for oscillating a high-frequency signal used as a signal source for emitting a radio wave of a specific frequency is provided on the circuit board 40 on the side.

Here, if necessary, the high-frequency oscillation circuit 7
0 is electromagnetically shielded, and a part of the connection bundle 100 to the control board is used as a transmission antenna line for emitting a high-frequency signal from the high-frequency oscillation circuit 70 as a radio wave.

On the card reader 21 side, a signal having a specific frequency guided to a lead wire 5 drawn out of an external terminal (contact terminal) 4 of the IC card inserted into the card reader 21, ie, the high frequency signal A receiving circuit 45 is provided for receiving a radio wave emitted by the oscillation circuit 70 via the contact terminal 4, converting the electric wave into a DC potential, and outputting the DC potential.

Then, based on the output from the receiving circuit 45, whether a lead wire for illegal signal extraction is connected to the external terminal 4 of the IC card received by the card reader 21 based on the output from the receiving circuit 45 by a determination circuit (not shown). Determine whether or not.

As described above, the difference between the legitimate card and the fraudulent card having the lead wire 5 coming out of the terminal of the IC card is explained by the fact that the lead wire of the fraudulent card functions as the receiving antenna of the receiving circuit 45. The output of the receiving circuit 45 can be determined by obtaining an output of a higher level than that of the regular card.

By incorporating the high-frequency oscillation circuit 70 on the card reader side, if the control board and the card reader 21 are separated from each other, a shield is provided between the control board and the card reader 21. Can be improved even if a card corresponding to the normal card is inserted, and even if the transmission antenna pattern of the high-frequency oscillation circuit 70 is different due to a design change, etc. Stable detection can be performed in the function of discriminating a card from a fraudulent card.

[0028]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 shows an IC according to an embodiment of the present invention.
FIG. 2 is a schematic side view illustrating a configuration of a card processing device.

FIG. 3 shows an IC according to an embodiment of the present invention.
FIG. 2 is a schematic plan view illustrating a configuration of a card processing device.

That is, as shown in FIGS. 2 and 3, the IC card processing device according to one embodiment of the present invention is provided in a housing 18 such as a public telephone and stores frequency information. It includes a card reader mechanism (card reader) 21 of an IC card processing device for processing a prepaid type IC memory card, and a processing circuit 50 and a determination circuit 46 which together with the card reader mechanism 21 constitute an IC card processing device. Communication control unit (control board) 5
And 1.

Here, the communication control section 51 is fixed as a control board at a predetermined position away from the card reader mechanism section 21 in the housing 18, and is inserted into the card reader mechanism section 21 as described later. In addition to read / write processing for the IC card, it also performs normal call control and predetermined control required for data communication with a personal computer, a word processor, and the like connected via a modular connector 53 provided on one surface of the housing 18. It has a function to perform.

The communication control unit 51 includes a processing circuit 50
Clock sources (high-frequency signal sources) CL2,... CLn for each control including clock signal sources for
Is provided.

The card reader mechanism 21 is provided in the housing 1
A guide member 22 made of resin (which may be made of metal in order to deal with mischief with a public telephone) for guiding the IC card from the outside of the guide member 8 and a guide member fixed to the rear portion of the guide member 22. It is integrally formed with a resin housing 30 for receiving the card guided at 22.

The guide member 22 comprises a central portion 22a provided with a card insertion slot 23, and projecting portions 22b and 22c projecting forward from both ends thereof so as to face each other. It is formed in a shape.

The distance between the opposing surfaces of these two protruding portions 22b and 22c is formed slightly larger than the width of the IC card, and the opposing surface of each protruding portion is continuous with the card insertion slot 23 and inserted from the front. Inserted IC card into card slot 23
A guide groove 24 for guiding horizontally in the direction is formed.

Flanges 25, 25 are provided on both sides of the guide member 22, and the flange 25 is screwed to the inner surface side of the housing 18, so that the entire card reader mechanism 21 is mounted on the housing. 18 supported.

The housing 30 is formed in a substantially rectangular shape having an open lower surface, and is provided in a middle portion thereof so as to partition the inside of the housing 30 up and down, and forms a card accommodating portion 30a on the lower surface side. An intermediate plate 31 is provided.

A hole 33 penetrating vertically is provided at a substantially central portion of the intermediate plate 31, and a terminal plate 35 is fixed to the hole 33.

A plurality of elastic contact terminals 36 for contacting the external terminals of the IC card are attached to the lower surface of the terminal plate 35 so as to project below the lower surface 31a of the middle plate 31. I have.

Also, on the rear side of the housing 30,
Sensor 38 for detecting that the IC card has been inserted to the terminal contact position (for example, a mechanical sensor such as a microswitch or an optical sensor including a light emitting element and a light receiving element).
Is provided.

The lower surface side of the card accommodating portion 30a is
The opening is large so that defective cards, dust, and the like, which have been cut short, may fall downward.

A circuit board 40 is mounted on the upper surface 31b of the middle plate 31.

One end of each contact terminal 36 of the terminal board 35 is connected to the circuit board 40, and a clock signal source (high frequency) for each control including a clock signal source for the processing circuit 50 and the like. An oscillation circuit 70 including a signal source (CL1) and a receiving circuit 45 described later are mounted in a positional relationship as far as possible from each other.

FIG. 4 shows the circuits CL 1 and 45 formed on the circuit board 40 and the card reader mechanism 2.
1 and a judgment circuit 46 constituting this card processing device.
And a communication control unit 51 including a processing circuit 50.

First, at one end on the circuit board 40, a high-frequency oscillation circuit 70 is disposed with its surroundings electromagnetically shielded.

The high-frequency signal from the high-frequency oscillation circuit 70 is emitted as a radio wave by using a part of the connection bundle 100 to the processing circuit 50 as a transmission antenna line.

That is, in this case, the high-frequency oscillation circuit 70
Even when the surroundings are electromagnetically shielded, a part of the connection bundle 100 functions as a transmitting antenna line, so that a signal from the high-frequency oscillation circuit 70 Is radiated within.

The plurality of contact terminals 3 on the circuit board 40
6 is a relay type switch element 44 and a board terminal 43a.
Is connected to the processing circuit 50 via the.

Here, one of the contact terminals 36 is provided with an oscillation frequency F (for example, 4.4336 MHz) of the high-frequency oscillation circuit 70 from the signal appearing at the contact terminal 36 '. And a receiving circuit 45 for selectively receiving and detecting only the signal of the same frequency component as the shortest distance.

In this case, on the circuit board 40, a high-frequency oscillation circuit 70 and a receiving circuit 45 to be described later are mounted in a positional relationship as far as possible from each other, and the high-frequency oscillation circuit 70 electromagnetically shields the surroundings. The high frequency oscillation circuit 70 and the receiving circuit 45 do not directly interfere with each other, and only signals appearing at the contact terminals 36 'are applied to the receiving circuit 45. It has been made.

The output of the receiving circuit 45 includes the receiving circuit 4
The determination circuit 46 for determining whether or not the insertion card has an incorrect lead wire based on the output of the
b.

This judgment output is sent to the processing circuit 50, and the output of the sensor 38 is sent to the processing circuit 50 via the substrate terminal 43c.

Each circuit on the circuit board 40 receives power from the processing circuit 50 via the board terminal 43d.

FIG. 5 shows the configuration of the switch element 44, the receiving circuit 45, and the determination circuit 46 more specifically. The switch element 44 is connected to the processing circuit 50 side of the communication control unit 51 during the detection operation. Is opened so that the high frequency signal from

Here, since the switch elements 44 between all the contact terminals 36 and the processing circuit 50 are open, the high-frequency signal from the processing circuit 50 side of the communication control unit 51 is transmitted to the IC card. Output to the contact terminal 36 'through the circuit can also be prevented.

The receiving circuit 45 includes a contact terminal 36 '.
And a local signal from a local oscillator 45b are input to a mixer 45c, and of the mixed output, a signal having passed through an intermediate frequency filter 45d is amplified by an intermediate frequency amplifier 45e. The detector 45f is configured to perform detection.

The frequency of the local oscillation signal of the receiving circuit 45 is used to detect only a signal having a frequency component corresponding to a radio wave radiated from the high-frequency oscillation circuit 70 using a part of the connection bundle 100 as a transmitting antenna line. The frequency is set higher (or lower) than the oscillation frequency F of the high-frequency oscillation circuit 70 by the center frequency of the pass of the intermediate frequency filter 45b.

The determination circuit 46 on the communication control unit 51 side
Compares the detection output from the detector 45f in the receiving circuit 45 on the circuit board 40 side with the reference voltage Vr by the comparator 46a, outputs an H (high) level when the detection output is larger than Vr, When the voltage is equal to or lower than Vr, an L (low) level is output.

This reference voltage Vr is larger than the output of the receiving circuit 45 when a regular card is inserted by a predetermined margin value, and has a predetermined length (about the card length) at the contact terminal 36 '.
Is set in advance so as to be smaller than the output of the receiving circuit 45 when the lead wire is connected.

FIG. 6 shows a specific example of the receiving circuit 45 and the high-frequency oscillation circuit 70 provided on the circuit board 40.

That is, a signal having a frequency component corresponding to a radio wave radiated from the high-frequency oscillation circuit 70 via the antenna line (a part of the connection bundle 100) is inserted into the card reader mechanism 21 to be guided. Unauthorized lead 1
CR coupling circuit 10 including a capacitor from one contact terminal 36 'which is a contact point with IC card 102 having
3, when connected to the IF amplification detection IC 104, the mixer 105 converts the frequency into a frequency that can be easily amplified and detected.
And a local oscillator (4.883 MH) for the mixer 105.
z) 106 is provided at the front end of the IF amplification detection IC 104.

Here, as the IF amplification detection IC 104, an IC having a function of outputting the magnitude of the signal level by a DC voltage is used, and a band-pass filter (BPF) having a center frequency of 460 kHz is provided before the IF amplification section 107. ) 108 is provided externally to limit the bandwidth.

The high-frequency oscillation circuit 70 is formed by connecting the input and output terminals of an inverter 70a via a crystal oscillator 70b, and connecting capacitors 70c and 70d to both ends thereof.

By using a part of the connection bundle 100 connected to the output terminal of the high-frequency oscillation circuit 70 as a transmission antenna line, the high-frequency oscillation circuit 70
Is strongly radiated, the level of the input signal to the receiving circuit 45 increases, and it is possible to determine the presence or absence of a lead wire for the IC card in a state of good S / N.

The IF signal from the IF amplifying section 107 is supplied to the determination circuit 46 of the communication control section 51 as a detection (DC) output detected by the detection section 109 as described above.

The processing circuit 50 on the communication control unit 51 side
Based on the signal from the sensor 38 on the circuit board 40 side and the signal from the determination circuit 46 on the communication control unit 51 side, power is supplied to each circuit on the circuit board 40, and the power is supplied through the switch element 44 and each contact terminal 36. To read and write information from and to the IC card.

FIG. 7 is a flowchart showing the processing procedure of the processing circuit 50.

Hereinafter, the operation of the card processing device will be described based on this flowchart.

It is assumed that the communication control unit 51 is energized in advance.

When the regular IC card 1 is guided by the guide groove 24 of the guide member 22 and inserted from the card insertion slot 23, the card enters the card accommodating portion 30a, and when it reaches a predetermined position, As shown in FIG. 8, each external terminal 2 of the card contacts each contact terminal 36, and the sensor 38 is turned on.

The processing circuit 50 detects the insertion of the IC card 1 based on a signal from the sensor 38, and
Power is supplied to each of the upper circuits, and each switch element 44 is opened (steps S1 and S2).

As a result, a radio wave by the clock signal of the frequency F radiated from the high-frequency oscillation circuit 70 using a part of the connection bundle 100 as the transmission antenna line is radiated into the housing 18.

At this time, the radio wave radiated in the housing 18 is induced in the integrated circuit of the IC card, the external terminal 2 and the like in the card accommodating portion 30a, but the line length of these circuits is extremely short. The line following the processing circuit 50 is disconnected by each switch element 44.

As a result, the signal level appearing at the contact terminal 36 'is very small, the detection output of the receiving circuit 45 becomes lower than the reference voltage Vr, and the output from the discriminating circuit 46 becomes L level.

When the processing circuit 50 receives the L level output of the determination circuit 46, it determines that the inserted card is a regular card and stops the power supply to the circuit board 40 (however, the power supply to the oscillation circuit 70 is stopped). The stop may be removed), and after closing each switch element 44, a process of reading and writing information from the inserted card (a process of subtracting the usage frequency from the remaining frequency) is performed (steps S3, S4, and S).
5).

After the read / write processing is completed,
The signal from the sensor 38 is monitored to confirm that the card has been pulled out, and the processing for this card is terminated (step S6).

Further, as shown in FIG. 9, when the above-described unauthorized card 3 is inserted,
Of the contact terminal 3 via the external terminal 4
6 '.

Therefore, equivalently, the connection bundle 1 connected to the high-frequency oscillation circuit 70 provided on the circuit board 40
A receiving antenna that strongly receives a radio wave emitted using a part of 00 as a transmitting antenna is connected to the contact terminal 36 '.

Thus, a high-frequency signal radiated from the high-frequency oscillation circuit 70 appears at the contact terminal 36 '.

Since the lead wire 5 acts as a receiving antenna, the signal level is very large with little influence of the position and thickness of the lead wire 5.

Therefore, from the receiving circuit 45 which receives and detects only the radio wave radiated from the high frequency oscillation circuit 70, only the detection output of the radio wave of the predetermined frequency F is transmitted to the communication control unit 5
The signal is sent to the judgment circuit 46 on the first side, and the output of the judgment circuit 46 becomes H level.

The processing circuit 50 that has received the H-level signal from the determination circuit 46 determines that the inserted card is an illegal card, and stops supplying power to the circuit board 40. A signal for instructing withdrawal is transmitted to a display unit (not shown), the sensor 38 confirms that the card has been withdrawn, and terminates the processing for the unauthorized card (steps S7, S8, S9).

Incidentally, even if a person who intends to perform wrongdoing shields the lead wire 5, the shield conductor does not reach the ground line of the receiving circuit 45, but rather increases the reception output, and the same as above. The judgment result is obtained.

In this way, if the IC card inserted into the card insertion slot 23 is an unauthorized card such that the lead wire is connected, information is not exchanged with the card. The contents of the information, the processing procedure, and the like are not known, and the unauthorized use of the IC card processing device is prevented.

If an external radio wave arrives when an unauthorized card is inserted, the radio wave is induced on the lead wire of the unauthorized card protruding outside the housing 18, so that the contact terminals 36 'Appears in the high-frequency oscillation circuit 7
The signal is a signal in which a radio wave radiated from 0 and an external radio wave are superimposed.

Here, when the frequency of the external radio wave is close to or equal to F, the signal is detected by the receiving circuit 45 together with the signal from the high-frequency oscillation circuit 70, and when only the signal from the high-frequency oscillation circuit 70 is received. A detection output larger than the detection output is obtained.

Therefore, an unauthorized card is not erroneously determined to be a legitimate card.

In addition, since the IC card processing apparatus has a card receiving portion having a large opening on the lower surface, even if an unauthorized card cut to half the length is inserted, the card is kept in the opening. Since it falls from the box, the occurrence of unusable bears due to clogging of the card does not occur.

In the above-described embodiment, the control is performed such that power is supplied to all the circuits for detecting lead wires only while determining whether the inserted card is legitimate or improper. The operation of any one of the control circuit 45 and the determination circuit 46 may be controlled.

Further, these circuits may be operated at all times, and after the information is exchanged with the IC card, the output of the determination circuit 46 may be confirmed.

In the above-described embodiment, a superheterodyne receiving circuit is used in order to receive a weak radio wave with high sensitivity. However, when the radio wave radiated from the high-frequency signal source is strong, the filter is simply used. And a detector alone, or an amplifier may be added to this to form a receiving circuit.

In this case, the amplifier may be located at any stage before the filter or between the filter and the detector.

In the case of a device having only one high-frequency signal source in the housing, the filter can be omitted.

In the above-described embodiment, the determination circuit is provided in the communication control unit remote from the card reader mechanism. However, the determination circuit may be provided on a circuit board on the card reader mechanism.

In the above-described embodiment, a relay-type switch element is used, but instead of a relay, a semiconductor switch (for example, an analog switch, a gate element, a photocoupler, or the like) or a signal separation of a high-frequency signal is used. A possible filter circuit may be used.

In the above embodiment, the output of the receiving circuit is used only for detecting a lead wire of an unauthorized card. However, based on the received output, it is determined whether or not the entire detecting circuit operates normally. May be determined.

Further, in the above-described embodiment, a manual insertion type IC card processing apparatus has been described. However, the present invention is also applicable to a card processing apparatus which completely pulls an IC card inserted into a card insertion slot into a card accommodating section. The invention can be applied as well.

Also, a part of the connection bundle 100 for connecting the output line of the high-frequency oscillation circuit 70 to a circuit network (communication control unit 51, that is, the processing circuit 50 of the control board) located at a position separated from the card reader 21. When used as an antenna line for emitting a radio wave by connecting to the connection bundle 100, as shown in FIG. 4, an unused line in the connection bundle 100 is used as a part of the connection bundle 100. Is also good.

Alternatively, a high-impedance line in the connection bundle 100 may be used as shown in FIG.

This example is applied to a configuration using a working line having a high impedance in the connection bundle 100 connecting the sensor 38 and the processing circuit 50.

That is, in FIG.
The output terminal of the sensor 38 is connected to a terminal 40 a via a resistor 301, and the output terminal of the high-frequency oscillation circuit 70 is connected to a terminal 40 a via a capacitor 302.

The terminal 40a is connected to the processing circuit 50 via the connection bundle 100.

The connection bundle 100 is connected to the communication control unit 5
1, it is connected to the processing circuit 50 via a ground capacitor 303 and a resistor 304.

That is, a part of the connection bundle 100 for connecting the output line of the high-frequency oscillation circuit 70 to a circuit network (communication control unit 51, that is, the processing circuit 50 of the control board) located at a position separated from the card reader 21. When used as an antenna line for emitting radio waves, the sensor 38 and the processing circuit 50
A configuration using a used line that becomes a high impedance in the connection bundle 100 that connects between the two is realized.

In this case, the resistors 301 and 304 connected to both ends of the connection bundle 100 are connected to the connection bundle 1
00 indicates that the impedance becomes substantially high impedance.

As described above, the IC card processing device according to the present invention uses the high-frequency oscillation circuit 7 provided in the card accommodating section.
A high-frequency radio wave radiated from 0 is induced in a lead wire of an unauthorized card received in the card housing, and a signal appearing at a contact terminal in contact with an external terminal of the card connected to this lead is transmitted to the inside of the card housing. Receiving circuit 45 provided in
, And based on the received output, it is determined that the inserted card is an unauthorized card.

As described above, according to the present invention, since the lead wire of the unauthorized card is used as a receiving antenna for receiving the radio wave radiated into the housing, the influence of the thickness and position of the lead on the reception output is small. In addition, unauthorized card detection can be performed reliably.

In addition, since it is not necessary to provide a conductive plate or the like for electrostatically coupling to the lead wire of the unauthorized card between the card insertion slot and the contact terminal of the card housing as in the prior art, the shape of the card housing is not required. For example, in order to prevent card clogging due to insertion of a foreign matter such as a card or a piece of paper that has been cut short, the lower surface side of the card accommodating portion may be largely opened so that the foreign matter can be discharged.

[0110]

Therefore, as described above, according to the present invention, by arranging the high-frequency oscillation circuit and the receiving circuit on the card reader side with a predetermined positional relationship, for example, a control board is provided. In the case where the card and the card reader are separated from each other, even if an object corresponding to a shield is inserted between the control board and the card reader mechanism, the detection sensitivity of the unauthorized card is good. And an IC card processing device capable of performing stable detection in a discriminating function between a regular card and a fraudulent card even when the antenna pattern of the oscillation circuit is different due to a design change or the like. can do.

[Brief description of the drawings]

FIG. 1 is a plan view showing a schematic configuration of an IC card processing device according to the present invention.

FIG. 2 is a schematic side view showing a configuration of an IC card processing device according to one embodiment of the present invention.

FIG. 3 is a schematic plan view showing a configuration of an IC card processing device according to one embodiment of the present invention.

FIG. 4 is a circuit diagram illustrating the circuits 70 and 45 formed on the circuit board 40 of the card reader mechanism unit 21 used in the IC card processing apparatus according to the embodiment of the present invention, and a communication control unit (control unit). FIG. 3 is a diagram showing a determination circuit 46 and a processing circuit 50 of a (board) 51.

FIG. 5 is a circuit diagram of a switch element 44, a receiving circuit 45, and a determination circuit 46 of a communication control unit (control board) 51 on a circuit board 40 used in the IC card processing device according to the embodiment of the present invention. It is a figure which shows a structure more concretely.

FIG. 6 is a diagram showing a specific example of a receiving circuit 45 and an oscillating circuit 70 provided on the circuit board 40.

FIG. 7 is a flowchart illustrating a processing procedure of the processing circuit 50;

FIG. 8 is a diagram for explaining an operation of the IC card processing device according to the embodiment of the present invention;

FIG. 9 is a diagram for explaining an operation of the IC card processing device according to the embodiment of the present invention;

FIG. 10 is a diagram illustrating an example of an IC card 1;

FIG. 11 is a diagram illustrating an example of a fraudulent card 3;

FIG. 12 is a diagram illustrating an example of a conventional IC card processing device 10.

FIG. 13 is a cross-sectional view of I Patent No. 2819445;
It is a top view showing the schematic structure of a C card processing device.

FIG. 14 is an IC according to an embodiment of the present invention.
Sensor 3 on circuit board 40 used in card processing device
FIG. 8 is a diagram illustrating a modification example in which a connection line between the communication control unit and a processing circuit of a communication control unit (control board) is used as an antenna line for emitting a radio wave from a high-frequency oscillation circuit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... IC card, 2 ... External terminal, 3 ... Unauthorized card, 4 ... External terminal, 5 ... Lead wire, 18 ... Housing, 21 ... Card reader mechanism (card reader), 22 ... Guide member, 23 ... Card insertion Mouth, 30 ... Housing, 30a ... Card accommodating part, 35 ... Terminal board, 36 ... Contact terminal, 38 ... Sensor, 40 ... Circuit board, 44 ... Switch element, 45 ... Receiving circuit, 46 ... Judgment circuit, 50 ... Processing circuit 51, a communication control unit (control board); 70, a high-frequency oscillation circuit; 100, an antenna wire (connection bundle).

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2C005 MA01 MA21 MB02 MB03 MB05 NA08 NA18 NA24 SA27 TA01 TA22 5B058 CA02 CA13 KA12 KA13 KA31

Claims (3)

[Claims] A card reader for receiving an IC card inserted from a card insertion slot to a predetermined position; a contact terminal provided on the card reader for contacting an external terminal of the IC card; A high-frequency oscillation circuit used as a signal source for emitting a signal, a receiving circuit that receives the radio wave emitted by the high-frequency oscillation circuit in the card reader via the contact terminal, converts the radio wave into a DC potential, and outputs the DC potential A determination circuit that determines whether or not a lead wire for illegal signal extraction is connected to an external terminal of the IC card received by the card reader based on an output from the reception circuit; and And a processing circuit for performing read / write processing on the IC card based on the output of the card. An IC card processing device, which is used as an antenna wire for emitting radio waves by being connected to a part of a connection bundle connected to a circuit network located at a position separated from a reader. 2. The IC according to claim 1, wherein an unused line in the connection bundle or a used line having high impedance in the connection bundle is used as a part of the connection bundle. Card processing device. 3. A sensor in the card reader for detecting that an IC card is received at the predetermined position of the card reader; and a sensor disposed near the contact terminal, wherein the sensor detects reception of the IC card. A switch element that cuts off continuity between the contact terminal and the processing circuit that are connected by using a high-impedance use line in the connection bundle when the determination is made. Determining whether a lead wire for illegal signal extraction is connected to an external terminal of the IC card received by the card reader based on an output of the receiving circuit when the switch element is open. The IC card processing device according to claim 1 or 2, wherein: