JP2011227591A - Ic card reader and ic card authentication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an IC card reader capable of shortening a period until completion of a system using an IC card such as an IC card authentication system and reducing costs associated with switching to an IC card of another communication method. provide.
In an IC card reader (10) including a control board that performs wireless communication with a non-contact type IC card, a signal in a first frequency band is sent to the control board (20). Connected to the first antenna (31) for transmitting and receiving, the second antenna (32) for transmitting and receiving signals in a second frequency band different from the first frequency band, and the first antenna The first transmitting / receiving circuit (29a) and the second transmitting / receiving circuit (29b) connected to the second antenna are provided.
[Selection] Figure 2

Description

  The present invention relates to an IC card reader and an IC card authentication system.

  In recent years, in the entrance / exit management system and security system for buildings and facilities such as buildings and factories, contactless IC cards and IC tags (hereinafter referred to as IC tags including IC tags) storing ID codes (individual identification information) and the like are stored. And an authentication system using a card reader that reads information on the IC card. As a communication method between the non-contact type IC card and the card reader in such an authentication system, Mifare (registered trademark), FeliCa (registered trademark), and 125 KHz band signals using 13.56 MHz band signals are used. Various types of methods such as HiTag1 have been put into practical use.

JP 2000-285207 A

  When a new authentication system using an IC card is constructed in a building or facility, an IC card suitable for the target system is selected from the various types of IC cards as described above. Each method has advantages and disadvantages, so that it may take a relatively long time to select an IC card.

  However, card readers as conventional IC card readers generally read information on any one type of IC card. Therefore, until the selection of the IC card to be used is completed, the work for laying the cable connecting the card reader and the management device for managing the card reader in the building or facility cannot proceed, and there is a period until the system is completed. become longer. In addition, if you want to apply a new IC card of a method different from the method used in the already installed authentication system, discard all the IC cards that have been used so far and use a new IC card and card Since it is necessary to switch to the reader, there is a problem that the cost associated with switching increases.

  Conventionally, there has also been proposed a multi-compatible card reader capable of reading information of two types of IC cards (Patent Document 1). Since the corresponding two types of card reader substrates are simply stacked and built in the case, there is a problem that the case becomes large.

  Furthermore, in a conventional entry / exit management system using an IC card, the entry record is stored in the memory in the card, and the entry record in the card is checked when leaving, so that the entry is not permitted if there is no record. However, there is a problem that the usable period of the card is shortened because the number of times of writing to the memory in the card is limited.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an IC card reader capable of shortening a period until a system using an IC card such as an IC card authentication system is completed.
Another object of the present invention is to provide an IC card reader which is compact and can reduce the cost associated with switching to another communication system IC card.
Another object of the present invention is to provide an IC card authentication system that can increase the safety against skimming in a system using an IC card and fraud by a forged card.
Still another object of the present invention is to provide an IC card authentication system capable of extending the use period of a card in an entrance / exit management system or the like that stores data such as entry records in a memory in the IC card. .

In order to achieve the above object, the invention described in claim 1
An IC card reader comprising a control board for performing wireless communication with a non-contact type IC card,
The control board is
A first antenna for transmitting and receiving signals in a first frequency band;
A second antenna for transmitting and receiving signals in a second frequency band different from the first frequency band;
It is characterized by having.

According to the invention described in claim 1, since the IC card reader can communicate with a plurality of IC cards having different communication methods, a new authentication system using the IC card is constructed. In addition, before determining an IC card suitable for a target system, an IC card reader and a management device and a cable for connecting them can be laid, thereby shortening the period until the system is completed. . In addition, even when switching to an IC card of another communication system different from the communication system of the existing system, the IC card used until then can be used continuously, so that the cost associated with switching the IC card can be reduced. it can.
In addition, when a general-purpose module is used as a transmission / reception circuit for transmitting and receiving signals in the frequency band used in the existing system, the transmission / reception circuit for transmitting and receiving signals in the frequency band used for other different communication methods By exchanging or changing the control board by incorporating the IC card, the time required when building a system using a new IC card or switching from the communication system of the existing system to an IC card of another communication system is shortened. Cost can be reduced.

The invention according to claim 2 is the IC card reader according to claim 1,
The control board further includes a first transmission / reception circuit connected to the first antenna and a second transmission / reception circuit connected to the second antenna.
According to the invention described in claim 2, since the IC card reader can communicate with a plurality of IC cards having different communication methods, a new authentication system using the IC card is constructed. In addition, before determining an IC card suitable for a target system, an IC card reader and a management device and a cable for connecting them can be laid, thereby shortening the period until the system is completed. . In addition, even when switching to an IC card of another communication system different from the communication system of the existing system, the IC card used until then can be used continuously, so that the cost associated with switching the IC card can be reduced. it can. In addition, since a transmission / reception circuit connected to each antenna is incorporated in the control board, a compact IC card reader can be provided.

The invention according to claim 3 is the IC card reader according to claim 1 or 2,
A coiled conductive layer pattern constituting the first antenna is formed along a peripheral portion of the control board, and the first conductive layer pattern constituting the first antenna of the control board is disposed inside the coiled conductive layer pattern. A coiled conductive layer pattern constituting the antenna 2 is formed.
According to the third aspect of the present invention, two antennas can be formed on one substrate, and the necessary area of the substrate can be reduced as compared with the case where the two antennas are formed side by side. It becomes possible to reduce the size of the apparatus. Further, since the two antennas are arranged concentrically, it is possible to prevent the position where the card is held over the card reader from being changed depending on the type of the IC card.

The invention described in claim 4 is the IC card reader according to claim 3,
The coiled conductive layer pattern constituting the second antenna has at least the coil pitch of the coiled conductive layer pattern constituting the first antenna and the coiled conductive layer constituting the second antenna. It is characterized in that it is arranged inside the coiled conductive layer pattern constituting the first antenna with an interval wider than the pitch of the coil of the pattern.
According to the invention described in claim 4, it is possible to prevent interference between the antennas of the first antenna and the second antenna.

The invention according to claim 5 is the IC card reader according to claim 3 or 4,
The first transmission / reception circuit and the second transmission / reception circuit are arranged in a region inside the coiled conductive layer pattern constituting the second antenna of the control board at a distance wider than at least the pitch of the coil. It is characterized by being.
According to the invention described in claim 4, it is possible to prevent interference between the antennas of the first antenna and the second antenna and between each antenna and each transmission / reception circuit.

The IC card authentication system according to the invention described in claim 6 is:
The IC card reader according to any one of claims 1 to 5,
A third antenna for transmitting and receiving the signal in the first frequency band; a fourth antenna for transmitting and receiving a signal in the second frequency band; and a third antenna connected to the third antenna. An IC card including a transmission / reception circuit and a fourth transmission / reception circuit connected to the fourth antenna is combined.
According to the invention described in claim 6, a plurality of types of IC cards having different communication methods can be used together, and authentication suitable for a target system can be performed.

The invention according to claim 7 is the IC card authentication system according to claim 6,
The IC card includes a first nonvolatile memory connected to the third transmission / reception circuit, and a second nonvolatile memory connected to the fourth transmission / reception circuit,
A different ID code is stored in each of the first nonvolatile memory and the second nonvolatile memory,
The IC card reader is configured to read and collate an ID code stored in each of the first nonvolatile memory and the second nonvolatile memory.
According to the invention of claim 7, even if one ID code is skimmed and the card is forged, it is not recognized as a regular card without the other ID code. Safety against fraud can be increased.

The invention according to claim 8 is the IC card authentication system according to claim 7,
An encrypted ID code is stored in the first nonvolatile memory or the second nonvolatile memory,
A key code for decrypting the encrypted ID code is stored in the second nonvolatile memory or the first nonvolatile memory,
The IC card reader reads the ID code and the key code stored in the first nonvolatile memory and the second nonvolatile memory, and decrypts the read ID code using the read key code. It is comprised so that collation may be performed.
According to the invention of claim 7, even if the ID code is read, if the key code cannot be read, or if the ID code cannot be decoded by the key code, it can be recognized as a legitimate card. Therefore, it is possible to further increase the security against fraud by a forged card.

The invention according to claim 9 is the IC card authentication system according to claim 7 or 8,
The first nonvolatile memory and the second nonvolatile memory are memories capable of writing data, respectively.
The IC card writes the specific data to the other nonvolatile memory after the number of times of writing the specific data to one of the first nonvolatile memory or the second nonvolatile memory reaches a predetermined value. It is comprised as follows.
According to the eighth aspect of the present invention, when applied to an entry / exit management system or the like for storing data such as room entry records in the memory in the IC card, the number of times the memory is written becomes the number of times that the memory can be written. Even if it reaches, the data can be written to the other memory thereafter, so that the number of times of writing can be increased as compared with the conventional card, and the usage period of the card can be extended.

ADVANTAGE OF THE INVENTION According to this invention, the IC card reader which can shorten the period until completion of the system using IC cards, such as an IC card authentication system, is realizable. In addition, it is possible to realize an IC card reader that is compact and can reduce the cost associated with switching to another communication system IC card.
Furthermore, according to the present invention, it is possible to realize an IC card authentication system that can increase the safety against skimming in a system using an IC card and fraudulent acts caused by a forged card. In addition, in an entry / exit management system that stores data such as entry records in a memory in the IC card, there is an effect that an IC card authentication system that can extend the card usage period can be realized.

The external appearance of the card reader to which this invention is applied is shown, (A) is a front view, (B) is a side view. It is a block diagram which shows the circuit structural example of the control board in the card reader of embodiment. It is a layout figure which shows an example of the antenna pattern and ground pattern of the control board of the card reader of embodiment. It is a block diagram which shows an example of the circuit structure in the IC card to which the IC card authentication system of this invention is applied.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In the embodiment described below, an IC card card reader and an authentication system using the IC card reader that implement the entry / exit management function and the security function as one apparatus will be described by way of example. The present invention is not limited to this, and can be applied to a card reader having only one of the functions.

  FIG. 1 shows an appearance of a card reader as a card reading device constituting an authentication system having an entrance / exit management function and a security function according to the present embodiment. FIG. 1 (A) is a front view, FIG. B) is a side view.

  As shown in the figure, the card reader 10 of the present embodiment informs the front of the case body 11 of the control status and processing results such as “unlocking”, “verification”, “permitted”, “abnormal”, etc. to the outside. Display lamps 12a, 12b, 12c, 12d for operation, an operation button 13a for giving a command to shift the system to the security state, an operation button 13b for giving a command to shift the system to the security release state, and a built-in speaker A perforated section 14 that makes it easy to transmit the sound generated to the outside or increase the input volume to the microphone, and a security company patrolman visits the site when an intrusion is detected by a human sensor during security Are provided with an operation button 13c or the like that is operated when security is started (patrolling start) or security cancellation (patrolling cancellation) is executed. Although not shown, the card reader of FIG. 1 is installed and used on the wall surface near the door of the entrance of the building.

  FIG. 2 is a block diagram showing a circuit configuration example of the main control board 20 provided inside the case of the card reader 10 of FIG.

  As shown in FIG. 2, the main control board 20 has a setting switch 21 a for performing various settings according to the system to be constructed, such as how to shine the LED and the type of sound emitted from the speaker, and the open / closed state of the case top cover. Tamper switch 21b for detection, operation button switch 21c for detecting whether or not each of the "security", "release", and "patrol" operation buttons 13a-13c provided on the front face of the case is operated, these A control circuit 22 comprising a CPU, ROM, RAM, etc. for generating a control signal in the card reader 20 in response to signals from the switches and performing communication processing, and a control signal from the control circuit 22 are provided on the front surface of the case. Driver circuit 23 for driving the display lamps 12a to 12d to be turned on, for outputting sound according to the control state and signal processing result It comprises such driver circuit 25 for driving the voice synthesis LSI24 and speaker (SP).

  Also, on the main control board 20, a DC-DC converter or the like that generates an internal power supply voltage Vcc such as 5V required for the operation of the control circuit 22 or the like by receiving a supply voltage of DC9V to 28V from the outside. Communication driver circuits 27a and 27b for performing data communication in accordance with a communication standard such as RS485, a communication switching circuit 27c for switching communication, and an upper lid of the case 11 A driver circuit 28 is provided for generating and outputting a security output signal for ringing a bell or turning on an alarm lamp when an abnormality such as unauthorized opening of the alarm is detected.

  The communication driver circuit 27a manages the results when each of the “security”, “release”, and “patroll” operation buttons 13a to 13c is operated, or when the card is authenticated by communication with an IC card described later. Communication to inform the device. The communication driver circuit 27b performs a self-diagnosis function included in the control circuit 22. The management device performs data communication with a plurality of card readers 10 having a control board 20 configured as shown in FIG. 2 provided in the system, monitors the entire system, and sends commands such as opening and closing of doors. It is comprised so that it may have.

  Further, on the main control board 20 of FIG. 2, a transmission / reception circuit 29a for transmitting / receiving data to / from an IC card using a 13.56 MHz band signal such as Mifare (registered trademark), and a 125 KHz band signal such as HiTag1 are provided. Are provided with a transmission / reception circuit 29b for transmitting / receiving data to / from an IC card and antennas 31, 32 connected to the respective transmission / reception circuits.

  The control circuit 22 of the card reader according to this embodiment communicates with a plurality of types of IC cards of other standards such as FeliCa (registered trademark) in addition to Mifare (registered trademark) for signals in the 13.56 MHz band. The information indicating the protocol and the data configuration of the device, and the 125 KHz band signal, the information indicating the protocol and the data configuration for communicating with a plurality of types of IC cards such as HiTag1 and HiTag2. In addition, when the communication circuit 29a and the transmission / reception circuit 29b are actually operated to communicate with the card, the transmission / reception circuits 29a and 29b are operated in a time-sharing manner to avoid mutual interference between the antennas 31 and 32. It is configured to perform control.

As described above, the card reader of this embodiment is configured to be able to communicate with a plurality of IC cards. Therefore, when a new authentication system using an IC card is constructed in a certain building or facility, there are various types. Before selecting an IC card suitable for the target system from among IC cards of the system, it is possible to proceed with the work of laying the cable connecting the card reader and the management device for managing it in a building or facility It is possible to shorten the period until the system is completed.
Further, when it is desired to apply an IC card of a method different from the method used in the already installed authentication system, the IC used up to now is replaced by replacing the card reader with a card reader as in this embodiment. Since the card can be used continuously, the cost associated with switching can be reduced. Furthermore, there is an advantage that it is not necessary to manage the inventory of a plurality of different types of card readers.

Next, a specific method of forming the two antennas 31 and 32 provided to enable transmission and reception of signals in the two frequency bands as described above will be described.
Conventionally, when designing a card reader that can transmit and receive two types of IC cards that use signals in different frequency bands, a card reader board that transmits and receives signals in each frequency band is manufactured separately, and the boards are stacked. It was common to place in Thereby, there exists an advantage that the existing card reader board | substrate can be diverted as it is. However, if the two card reader substrates are simply placed one on top of the other, there is a problem that the housing case becomes large.

  In addition, it is conceivable to provide two antennas on the same substrate. In this case, it is desirable to arrange the two antennas side by side in order to avoid signal interference between the two antennas. Previously it was considered. However, if the two antennas are arranged side by side on the same substrate, the substrate and the case for housing it will be large. In addition, it is necessary to change the position where the card is held with respect to the card reader depending on the type of the card to be used. Accordingly, the present inventor has developed a method for forming an antenna that can avoid the above-described problems.

FIG. 3 shows a specific pattern layout of the two antennas 31 and 32 by the forming method developed by the present inventor.
As shown in FIG. 3, in the control board 20 of the card reader of the present embodiment, the 125 KHz band signal transmitting / receiving antenna 32 is made of a conductive layer so as to form a substantially rectangular shape along the peripheral edge of the board 20. It is formed as a coiled antenna pattern P2 having a large diameter. On the other hand, the 13.56 MHz band transmission / reception antenna 31 is formed inside the antenna pattern P2 as a coiled antenna pattern P1 having a diameter smaller than that of P1. The antenna patterns P1 and P2 are preferably arranged so that the distance between them is larger than the pitch of the antenna pattern coils.

  It is also conceivable to reverse the antennas used in the 125 KHz band and 13.56 MHz band.

  In the layout of this embodiment, the antenna pattern P1 of the 13.56 MHz band signal is formed as a rounded rectangular pattern in a region in which the horizontal width and the vertical width in the center of the substrate 20 are substantially the same. Inside the antenna pattern P1, formed is a region A1 in which ICs and elements constituting mainly the control circuit 22 and the transmission / reception circuits 29a and 29b are mounted. In addition, a region A2 where ICs and elements constituting the power supply circuit 26 are mainly mounted is provided above the substrate 20 and between the antenna patterns P1 and P2.

  The areas A1 and A2 are provided with a ground pattern P3 that partially intersects with the antenna pattern P1 and supplies a ground potential to the control circuit 22 and the power supply circuit 26. The ground patterns P3 in the regions A1 and A2 may be formed so as to be partially connected. In that case, a multilayer wiring technique is applied to the formation of the pattern, and at least a crossing portion of the ground pattern P3 and the antenna pattern P1 is formed by a different conductive layer so that the ground pattern and the antenna pattern are insulated by the insulating layer. It is good.

  However, if the areas A1 and A2 inside the antenna patterns P1 and P2 are formed so as to be filled with the ground pattern P3 and electronic circuit components, the magnetic field generated in the antenna during transmission by the transmission / reception circuits 27a and 27b is generated. The areas A1 and A2 are blocked, and the strength of the signal with the external IC card is lowered, and good communication cannot be performed.

  Therefore, in the control board 20 of this embodiment, a gap S wider than the coil pitch of the antenna pattern is secured between the ground pattern P3 and each circuit component and the antenna patterns P1 and P2. Specifically, it was designed to provide a gap S of 5 mm or more as much as possible between the antenna patterns P1, P2 and the ground pattern P3.

  As described above, the card reader according to the present embodiment can communicate with a plurality of types of IC cards using a 125 KHz band signal and a plurality of types of IC cards using a 13.56 MHz band signal. Therefore, by applying the card reader of the present embodiment to an existing authentication system that uses such an IC card, the IC card that has been used can be used continuously without being discarded. In addition, in the system to which the card reader of the present embodiment is applied, an IC card configured to have two communication functions using a 125 KHz band signal and a communication function using a 13.56 MHz band signal as described below. By combining, further excellent effects can be obtained.

FIG. 4 shows a configuration of an IC card suitable for the authentication system according to the present invention.
As shown in FIG. 4, the IC card 100 of the present embodiment includes a first circuit unit 110 having a communication function using a 125 KHz band signal and a second circuit unit 120 having a communication function using a 13.56 MHz band signal. Is provided. Of these, the first circuit unit 110 includes an antenna 111 and an internal power supply that is connected to the antenna 111 and rectifies an alternating current generated in the antenna by electromagnetic induction and is necessary for the operation of the circuit inside the card. Power supply circuit 112 for generating voltage Vcci, transmission / reception circuit 113 connected to antenna 111, CPU 114 for controlling a circuit inside the card and transferring data, EEPROM and flash memory capable of storing data in a nonvolatile manner And a bus 116 for connecting these circuit blocks.

  As the CPU 114, a CPU 114 having a configuration like a single chip microcomputer including a ROM and a RAM is used. An ID code unique to the card is stored in the non-volatile memory 115, and predetermined information is written into the non-volatile memory 115 by the CPU 114 when storing an entry / exit record or the like. A program for operating the CPU 114 may be stored in the nonvolatile memory 115. Since the second circuit unit 120 has the same configuration as that of the first circuit unit 110, a duplicate description is omitted. The CPU 114 (124) may be configured to be used in common by the first circuit unit 110 and the second circuit unit 120. Furthermore, the bus 116 of the first circuit unit 110 and the bus 126 of the second circuit unit 120 may be connected to each other directly or indirectly via a bus interface.

Next, control unique to the IC card of this embodiment will be described.
In the first control method, different ID codes are stored in the nonvolatile memory 115 of the first circuit unit 110 and the nonvolatile memory 125 of the second circuit unit 120, respectively, and the IC card is used as the card of the above embodiment. When authenticating with the reader, the two ID codes are read out and collated with the code held by the card reader or the management device, and if both codes match, the card is authenticated as a legitimate card. By adopting such a method, for example, even if a person who intends to cheat uses a card reader corresponding to a signal in one frequency band to skimm the internal ID code and forge a duplicate card Since the other ID code cannot be verified, the card is not authenticated as a legitimate card, and the security against fraud by a forged card is improved.

  In the second control method, the ID code encrypted in either the non-volatile memory 115 of the first circuit unit 110 or the non-volatile memory 125 of the second circuit unit 120 is decrypted to the other memory. When data (key code) is stored and the IC card is authenticated by the card reader of the embodiment, the ID code and the key code are read from each memory, and the read ID code is used as a key. When the code decrypted matches and matches, the card is authenticated.

  Further, ID codes encrypted with separate keys are stored in two memories, and data (key code) for decrypting the other ID code in pairs with the ID code is stored. That is, one nonvolatile memory stores a first key code for decrypting the encrypted first ID code and the encrypted second ID code, and the other nonvolatile memory stores a cipher. The encrypted second ID code and the encrypted second ID code for decrypting the first ID code may be stored. This further improves the security against fraud by skimming or counterfeit cards.

  In the third control method, when data such as room entry recording is stored in the memory in the IC card, first, for example, entry / exit recording is written into the nonvolatile memory 115 of the first circuit unit 110. Then, after the number of times of writing reaches a predetermined value such as the number of writable memories, writing such as input / output recording is performed on the nonvolatile memory 125 of the second circuit section 120. Accordingly, there is an advantage that the use period of the card can be extended when the number of times of writing to the nonvolatile memory built in the card is limited. In the case of this control method, the number of times the card is written may be stored together with data such as entry records in a nonvolatile memory in the IC card.

  Although the invention made by the present inventor has been specifically described based on the embodiment, the present invention is not limited to the embodiment. For example, in the above-described embodiment, the case where the entry / exit management function and the security function are applied to an IC card card reader and an authentication system using the card reader that implement the security function as one device has been described. Or it can apply also to the card reader which has only any one function of a security function.

  In that case, the configuration of the card reader can be changed according to the function. For example, in a card reader having only an entry / exit management function, the “security”, “release”, and “patrol” operation buttons 13a, 13b, and 13c shown in FIG. 1 and a switch (21c in FIG. 2) for detecting them are omitted. You may make it do. Further, in the card reader having only the security function, the “unlocking”, “verification”, and “permission” LED lamps 12a to 12c shown in FIG. 1 and a driver (a part of 23 in FIG. 2) for driving the same are omitted. You may make it do.

  In the above embodiment, the control board 20 is provided with the communication driver circuit 27b for transmitting the result of the self-diagnosis function to the management device. However, such a self-diagnosis function and the transmission driver circuit 27b may be omitted. .

  As mentioned above, although what applied this invention to the entrance / exit management system and the security system was demonstrated, this invention can be widely utilized for the authentication system and card reader which used IC card.

DESCRIPTION OF SYMBOLS 10 Card reader 11 Case main body 12a, 12b, 12c, 12d Indicator lamp 13a, 13b, 13c Operation button 14 Porous part 20 Main control board 21a Setting switch 21b Tamper switch 21c Operation button switch 22 Control circuit 23 Driver driver circuit of display lamp 24 Speech synthesis LSI
25 Driver driving circuit for speaker 26 Power supply circuit 27a, 27b Communication driver circuit 27c Communication switching circuit 28 Output driver circuit for guard output signal 29a, 29b Transmission / reception circuit 31, 32 Antenna 100 IC card 111, 121 Antenna 112, 122 Power supply circuit 113, 123 Transmission / reception circuit 115, 125 Non-volatile memory

Claims (9)

An IC card reader comprising a control board for performing wireless communication with a non-contact type IC card,
The control board is
A first antenna for transmitting and receiving signals in a first frequency band;
A second antenna for transmitting and receiving signals in a second frequency band different from the first frequency band;
An IC card reader characterized by comprising:   2. The control board according to claim 1, further comprising: a first transmission / reception circuit connected to the first antenna; and a second transmission / reception circuit connected to the second antenna. The IC card reader according to the description.   A coiled conductive layer pattern constituting the first antenna is formed along a peripheral portion of the control board, and the first conductive layer pattern constituting the first antenna of the control board is disposed inside the coiled conductive layer pattern. 3. The IC card reader according to claim 1, wherein a coiled conductive layer pattern constituting the two antennas is formed.   The coiled conductive layer pattern constituting the second antenna includes at least a pitch of the coil of the coiled conductive layer pattern constituting the first antenna and a coiled conductive layer pattern constituting the second antenna. 4. The IC card reader according to claim 3, wherein the IC card reader is disposed inside a coiled conductive layer pattern constituting the first antenna with an interval wider than a pitch of the coil of the layer pattern. .   The first transmission / reception circuit and the second transmission / reception circuit are arranged in a region inside the coiled conductive layer pattern constituting the second antenna of the control board at a distance wider than at least the pitch of the coil. 5. The IC card reader according to claim 3, wherein the IC card reader is provided. The IC card reader according to any one of claims 1 to 5,
A third antenna for transmitting and receiving the signal in the first frequency band; a fourth antenna for transmitting and receiving a signal in the second frequency band; and a third antenna connected to the third antenna. An IC card having a transmission / reception circuit and a fourth transmission / reception circuit connected to the fourth antenna;
An IC card authentication system characterized by combining the above. The IC card includes a first nonvolatile memory connected to the third transmission / reception circuit, and a second nonvolatile memory connected to the fourth transmission / reception circuit,
A different ID code is stored in each of the first nonvolatile memory and the second nonvolatile memory,
7. The IC card reader is configured to read and collate ID codes stored in each of the first nonvolatile memory and the second nonvolatile memory. IC card authentication system described in 1. An encrypted ID code is stored in the first nonvolatile memory or the second nonvolatile memory,
A key code for decrypting the encrypted ID code is stored in the second nonvolatile memory or the first nonvolatile memory,
The IC card reader reads the ID code and the key code stored in the first nonvolatile memory and the second nonvolatile memory, and decrypts the read ID code using the read key code. The IC card authentication system according to claim 7, wherein the IC card authentication system is configured to perform verification. The first nonvolatile memory and the second nonvolatile memory are memories capable of writing data, respectively.
The IC card writes the specific data to the other nonvolatile memory after the number of times of writing the specific data to one of the first nonvolatile memory or the second nonvolatile memory reaches a predetermined value. 9. The IC card authentication system according to claim 7, wherein the IC card authentication system is configured as described above.

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