JP4698361B2 - Authentication system - Google Patents

Description

  The present invention relates to an authentication system for performing authentication based on authentication information acquired by communicating with a non-contact type IC medium when authenticating the possessed person using the non-contact type IC medium.

  In recent years, there has been an increasing need for security for many things, and in particular, entry to a building or a predetermined place, entry into a room, etc. has been rigorously authenticated. In addition, various media such as non-contact IC cards, fingerprints, irises, and other biometric features are used in media for performing personal authentication. In such a system for authentication, it is necessary to take preventive measures against the use of others by loss or theft of media media such as contact type or non-contact type IC cards, and the cost of introducing the authentication system It is necessary to increase the introduction by reducing the cost.

  Conventionally, there are many known methods for performing authentication in entrance / exit, but as a general method, personal identification information is stored in a non-contact type IC card, and the identification information is transmitted over a card reader. By doing so, it is known to perform authentication on the card reader side. As for the IC module mounted on the non-contact type IC card, for example, there is one proposed in the following patent document.

Japanese Patent Application No. 2004-62751

  The above-mentioned patent document is based on the applicant of the present application and corresponds to three communication frequencies (13.56 GHz, 2.45 GHz, 950 MHz). In the case of .45 GHz, it can be constituted by the IC chip 101 and the antenna portion 112 (conductors 112a and 112b). In this case, the communication frequency is set by a resonance circuit formed by the length and area of the antenna portion and the relative permeability and relative permittivity of the base substrate.

  However, when the contactless IC card on which the IC module or the like is mounted is lost or stolen, it is difficult to prevent the use of others or theft of information such as stored identification information. There is also a method of preventing the use of others by using the identification information from the non-contact type IC card and the input of a personal identification number, but the personal identification number must be input each time the principal is used. It will be hard work. Furthermore, it has also been proposed to use biometric identification information such as fingerprints and irises in combination, but the problem is that a biometric identification information recognition device is required on the reader side, which is complicated and the device and system are expensive. There is.

  Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide an inexpensive authentication system that makes it difficult for others to use or read information due to loss or theft of an authentication media medium.

In order to solve the above-described problem, the invention of claim 1 is an authentication system that performs authentication by reading identification information stored in an IC medium having a media-side antenna for non-contact communication at a predetermined frequency. , before Symbol a reader unit for communicating with I C media and the frequency, when the reader unit becomes communicating with said IC medium to perform authentication acquires the identification information stored in the IC media processing And the IC media is deleted so that a part of the pattern of the antenna on the media side formed therein cannot be communicated at the frequency, and the end part of which the part is omitted. The connected conductive end is exposed, and the reader unit is configured to communicate with a media antenna on the IC media at a predetermined frequency. An antenna mounting member in which a predetermined number of antennas are formed at predetermined locations and an insulating state corresponding to the reader-side antenna, and a communication state that compensates for a missing pattern of the media-side antenna of the IC media. A replenishment partial antenna of a part pattern, a predetermined number of normal conduction parts that electrically connect the end part of the supplemental part antenna to the end of the missing pattern of the media side antenna, and the supplementary part antenna. Has a predetermined number of aerial conductive parts that are not conductively connected, and has a conductive part mounting member that is brought into a communication state at the frequency when the end of the missing pattern is brought into contact with the normal conductive part. The configuration.

In the invention of claim 2, the reader unit is provided with a plurality of reader-side antennas, a plurality of supplementary partial antennas corresponding to the reader-side antennas, and a plurality of normal conducting parts corresponding to the supplementary partial antennas. In this case, the control processing device causes a communication state when any one of the normal conducting portions is brought into contact with the conducting end of the media-side antenna, or media in order with respect to a plurality of regular conducting portions. It is set so that the communication state is established when the conducting end of the side antenna is contact-conducted, or the communication state is established in the time zone when the conducting end of the media-side antenna is contact-conducted with respect to each regular conducting portion. The setting part is provided .

  According to the present invention, a part of an antenna pattern that makes a media-side antenna of an IC medium incapable of communication at a predetermined frequency is deleted, and the reader-side antenna communicates with the IC media with a predetermined location of the reader-side antenna. A portion of the antenna mounting member formed on the antenna mounting member corresponding to the reader-side antenna is provided with a supplementary partial antenna of a partial pattern that is made in an insulated state to compensate for the missing pattern of the media-side antenna, Conductive part mounting comprising a predetermined number of normal conductive parts that conductively connect the end of the missing pattern of the side antenna and the end of the supplementary partial antenna, and a predetermined number of aerial conductive parts that are not conductively connected to the supplementary partial antenna It was configured to provide a member, and the end of the missing pattern of the media side antenna was contact-connected to the normal conduction portion In this case, the communication status becomes the above-mentioned frequency and the identification information is acquired from the IC media and the authentication process is performed, so that the communication status is not established unless the IC media to be in the communication status is connected to the supplementary partial antenna. In addition, since the position of the normal conduction part to be brought into the communication state of the media antenna of the IC media is not known by anyone other than the user, it is possible to make it difficult for other people to use the IC media for authentication due to loss or theft. Further, since it is difficult to use other people without using biometric identification information or the like, there is no need for an apparatus for acquiring biometric identification information or the like, and an authentication system can be constructed at low cost.

  Hereinafter, the best embodiment of the present invention will be described with reference to the drawings. In the following embodiments, an object on which a non-contact type IC medium is mounted will be described as an authentication card. However, the present invention can also be applied to a mobile phone, a pass card, a ticket, an identification card, and the like.

  FIG. 1 shows a configuration explanatory diagram of a first embodiment in a reader unit of an authentication system according to the present invention. FIG. 1A is an explanatory diagram to which the reader unit of the authentication system is applied, and FIG. 1B is a conceptual diagram of the configuration of the reader unit.

  In FIG. 1A, a reader unit 11 provided in the authentication system is disposed, for example, in the vicinity of the automatic opening / closing door 12. As shown in FIG. 1B, the reader unit 11 is configured in a form in which an antenna mounting member 21, a partial antenna mounting member 22, and a conduction unit mounting member 23 are stacked. In the antenna mounting member 21, the reader-side antenna 24 is formed in a planar shape at the right corner, for example. The reader-side antenna 24 can be formed with conductive ink by, for example, predetermined printing, and is connected to a control processing device described later from the back surface of the antenna mounting member 21.

  In the partial antenna mounting member 22, a supplemental partial antenna 25 is formed at a portion corresponding to the reader side antenna 24 formed on the antenna mounting member 21. The supplementary partial antenna 25 has a partial antenna connection pad 26 at the end, and a supplementary partial antenna pattern 27 is formed from the partial antenna connection pad 26. The partial antenna connection pad 26 and the supplementary partial antenna pattern 27 can also be formed with conductive ink by predetermined printing as described above.

  The conducting part mounting member 23 is formed by forming a plurality of holes in a base material that makes the supplementary partial antenna 25 invisible and filling the holes with a conductive member to form a conducting part 28 (enlarged sectional view). The conduction portion corresponding to the partial antenna connection pad 26 of the supplementary partial antenna 25 is the normal conduction portion 28A, and the other conduction portion 28 is connected to the supplementary partial antenna 25. This is a non-imaginary conduction part. Each of the normal conductive portion 28A and the aerial conductive portion 28 can be formed by, for example, filling the holes with a conductive ink (filling in a state of being slightly raised on the front and back of the base material) by screen printing. .

  Here, FIG. 2 shows a configuration diagram of a non-contact type IC medium used in the authentication system of FIG. In FIG. 2A, a media medium that communicates via the reader unit 11 has a predetermined display on the front surface 32 among the front surface 32 and the back surface 33 of the base material constituting the authentication card 31, for example. A non-contact IC medium (hereinafter referred to as “RFID”) 34 is mounted at a predetermined position (here, the right corner) inside the substrate.

  The internal structure of the RFID 34 will be described with reference to FIG. 3, but it is formed by media side antennas (a media side first antenna 36 and a media side second antenna 37) on both sides of the IC chip 35 to communicate with the reader side. For example, an antenna pattern in which a part of the media-side second antenna 37 is omitted is used. That is, originally, by making the media-side second antenna 37 the same length and area as the media-side first antenna 36, a circuit in the IC chip 35 and a resonance circuit are formed, and a predetermined frequency (in the drawing) As the shape, for example, the communication is possible at 950 MHz), but by deleting a part of the pattern of the second antenna 37 on the media side, it is impossible to communicate with the other reader side by the authentication card 31 alone. It is what you are doing.

  Such an RFID 34 is formed by printing each antenna pattern of the media-side first antenna 36 and the media-side second antenna 37 on a predetermined base material with conductive ink, and an IC chip is electrically connected to both ends of the antenna pattern. The authentication card 31 can be manufactured by sandwiching it with a card member such as plastic.

  On the other hand, as shown in FIGS. 2B and 2C, the end of the media-side second antenna 37 from which a part of the RFID 34 pattern is missing is connected to the conduction end 38 and the back of the authentication card 31. It is expressed in 33. That is, the partial antenna mounting member 22 is brought into contact with the conductive end portion 38 exposed on the back surface 33 of the authentication card 31 and the normal conductive portion 28A of the conductive portion mounting member 23 shown in FIG. The supplementary partial antenna 25 is electrically connected, and the supplementary partial antenna pattern 27 and the media-side second antenna 37 are integrated to form the same configuration as that of a known RFID. .

  FIG. 3 is an explanatory diagram of an authentication usage mode for the non-contact type IC media in the authentication system of FIG. As described above, the conduction portion mounting member 23 of the reader unit 11 includes the regular conduction portion 28A and the other conduction portion (aerial conduction portion) 28 among the conduction portions 28. Therefore, the authentication card 31 is provided. In using this, the conduction end portion 38 of the back surface 33 must be brought into contact with the regular conduction portion 28A. That is, as shown in FIG. 3A, even if the conduction end portion 38 of the authentication card 31 is brought into contact with the aerial conduction portion 28 on the conduction portion mounting member 23, the aerial conduction portion 28 and the supplementary partial antenna 25 are connected. Are not connected to each other, the RFID 34 of the authentication card 31 remains incapable of communication.

  On the other hand, as shown in FIG. 3B, when the conduction end 38 of the authentication card 31 is brought into contact with the regular conduction portion 28 </ b> A on the conduction portion mounting member 23, the supplemental partial antenna formed on the partial antenna mounting member 22. 25, and the supplementary partial antenna pattern 27 and the media-side second antenna 37 are integrated to form a resonance circuit capable of communicating at a predetermined frequency. Thus, a communication state is established with a control processing device described later. If the regular user (person) is informed of the position of the regular conducting portion 28A in advance, it is possible to make it difficult for others to use the authentication card 31.

  Here, FIG. 4 shows a block configuration diagram of a control processing device in the non-contact type IC media and authentication system of FIGS. 1 and 2. In FIG. 4, the RFID 34 is configured by an IC chip 35 including a processing unit 41, a memory 42, and a demodulation unit 43, and media side antennas 36 and 37. As shown in FIG. 2A, the media-side antennas 36 and 37 are formed in an L shape (and inverted L shape) on a plane, for example, and are connected to the supplementary partial antenna 25 of the reader unit 11. Thus, communication is possible, and a power signal of a predetermined frequency on which command information from a control processing device (51) to be described later is superimposed is received, and the control processing device (51) is received from the media side antennas 36 and 37 and the supplementary partial antenna 25. ) To send data.

  The memory 42 stores at least identification information for personal authentication as the card. The demodulator 43 demodulates the control signal and data from the radio waves received by the media antennas 36 and 37 and the supplementary partial antenna 25, and appropriately performs code conversion. And the process part 41 performs the process which transmits at least the identification information memorize | stored in the memory 42 to a control processing apparatus (51) with a program.

  Therefore, the control processing device 51 enters a communication state when the conduction end portion 38 of the authentication card 31 (RFID 34) is brought into contact with the regular conduction portion 28A of the conduction portion mounting member 23 of the reader unit 11, and the communication processing is performed. The identification information stored in the RFID 34 is acquired to authenticate the person, and as an example of FIG. 1A, includes at least a process for opening and closing the automatic opening / closing door 12, and appropriately includes a control unit 52, an authentication processing unit 53, A data conversion unit 56, a modulation unit 57, a transmission unit 58, a power amplification unit 59, and a detection unit 60 are provided that include an authentication table 54 and a log DB (database) 55 and transmit / receive via the reader-side antenna 24 of the reader unit 11. Prepare. In addition, an opening / closing drive control unit 61 and an interface (IF) 62 for opening and closing the door are provided. An opening / closing drive unit 63 for opening / closing the door is provided on the automatic opening / closing door side.

  The control unit 52 performs overall control of the entire control processing device 51, and a program corresponding to this is set. The authentication processing unit 53 authenticates the identification information acquired from the RFID 34 with reference to a preset authentication table 54, and sends an opening / closing instruction signal to the opening / closing drive control unit 61 when the authentication is confirmed. A program is provided for this purpose. The log DB 55 stores the use date and time of the user of the authentication card 31 as a history in association with the identification information, and is a storage device such as a hard disk (whether internal or external).

  The data conversion unit 56 converts information to be transmitted to the RFID 34 (identification information transmission instruction command or the like) into, for example, “1” and “0”, and converts the identification information transmitted from the RFID 34 into, for example, “1”, Convert to “0”. The modulation unit 57 modulates the information converted by the data conversion unit 56 based on the transmission output from the transmission unit 58 into, for example, an FSK (frequency shift keying) modulated wave. The power amplifying unit 59 amplifies the power of the modulated wave modulated by the modulating unit 57, and the amplified modulated wave is transmitted to the reader-side antenna 24. The detector 60 detects and demodulates the transmission radio wave received from the RFID 34 received by the reader-side antenna 24. The modulation unit 57, the transmission unit 58, the power amplification unit 59, and the detection unit 60 are configured by hardware.

  On the other hand, the opening / closing drive control unit 61 generates a drive control signal for opening / closing (here, opening) the automatic opening / closing door 12 based on the opening / closing instruction signal from the control unit 52, and the opening / closing drive unit 63 via the IF 62. And a program for this purpose. The opening / closing drive unit 63 is a drive circuit for opening / closing the automatic opening / closing door 12.

  Such a control processing device 51 communicates with the RFID 34 when the conducting end 38 of the authentication card 31 is brought into contact with the reader unit 11 to the aerial conducting unit 28 as shown in FIG. It will not be in a state. Then, as shown in FIG. 3B, when the conduction end portion 38 of the authentication card 31 is brought into contact with the regular conduction portion 28A on the reader unit 11, the media side antennas 36 and 37 and the supplementary partial antenna 25 are combined. Thus, the communication state is established, and the instruction command data converted by the data converter 56 is transmitted through the modulator 57 and the power amplifier 59, and the identification code is obtained from the RFID 34 via the detector 60.

  The acquired identification information is data-converted by the data conversion unit 56 and verified by the authentication processing unit 53 with reference to the authentication table 54. As a result of the collation, if the identification information is regular information, an opening / closing instruction signal is sent from the control unit 52 to the opening / closing drive control unit 61 to drive the opening / closing drive unit 62, and the log DB 55 is used for the date of use and the identification. Information is stored in association with each other. In addition, as a case of mismatch in the result of collation, a display unit may be provided to display to that effect (voice or character information).

  As described above, if the media side antennas 36 and 37 of the RFID 34 to be brought into the communication state are not connected to the supplementary partial antenna 25, the communication state is not brought about, and the reader unit to bring the media side antennas 36 and 37 of the RFID 34 into a communication state. 11, the position of the normal conducting portion 28A is not known by anyone other than the principal, so that it is possible to make it difficult for others to use the authentication card 31 for identity authentication and to use it due to theft. In addition, since it is difficult for others to use, there is no need for a device for acquiring biometric identification information or the like, and it can be constructed at low cost.

Next, FIG. 5 shows a configuration explanatory diagram of the second embodiment in the authentication system according to the present invention. FIG. 5A is a configuration diagram of the reader unit, and FIG. 5B is a block configuration diagram of the control processing device.
In FIG. 5A, the reader unit 11 is provided with, for example, four reader-side antennas 24-1 to 24-4 at four corners on the antenna mounting member 21, and the reader-side antenna 24-1 on the partial antenna mounting member 22. Are provided with supplementary partial antennas 25-1 to 25-4 corresponding to ˜24-4, and the part corresponding to the supplementary partial antennas 25-1 to 25-4 of the conduction part 28 of the conduction part mounting member 23 is regularized. The conductive portion 28A is used, and the other is the aerial conductive portion 28.

  5B, the control processing device 51 corresponding to the reader unit 11 of FIG. 5A is provided with a setting unit 64 in addition to the configuration of FIG. The setting unit 64 communicates only one reader-side antenna 24-3, for example, with the authentication card 31 (media-side antennas 36 and 37) among the four reader-side antennas 24-1 to 24-4. In this case, the other reader-side antennas 24-1, 24-2, 24-4 are so-called dummy, and the reader-side antenna 24-3 is set. For example, when facing and matching any one of the reader-side antennas 24-1, 24-2, and 24-4, it may be regarded as fraudulent and subsequent authentication may not be performed (locked state). In some cases, the lock may be released by inputting a personal identification number or identification information (providing an input unit).

  Further, as another setting to the setting unit 64, for example, the authentication card 31 (media side antennas 36 and 37) is any one of two times or more in the order determined in advance for the reader side antennas 24-1 to 24-4. This is a case where the corresponding reader-side antennas 24-1 to 24-4 are made to face each other and be brought into a normal communication state. For example, the reader-side antenna 24-2 and the reader-side antenna 24-4 are set in order. It is. Further, if the order is wrong, it may be regarded as fraud and subsequent authentication is not performed (lock state) (unlocking is the same as above).

  Furthermore, as another setting for the setting unit 64, for example, the reader-side antenna corresponding to the reader-side antennas 24-1 to 24-4 corresponding to the authentication card 31 (media-side antennas 36 and 37) in a predetermined time zone. When a match is established with 24-1 to 24-4, a normal communication state is established. For example, the reader-side antenna 24-2 is set at 15:00 to 17:00. If the corresponding reader-side antenna 24-2 is mistaken depending on the time of day, it may be regarded as illegal and subsequent authentication may not be performed (lock release) (unlocking is the same as above).

  In this way, not only is the communication regulated only by the conduction end portion 38 of the authentication card 31 being brought into contact with the single regular conduction portion 28A in the reader unit 11, but also the reader side that is changed in order or time zone. By using the antennas 24-1 to 24-4, it is possible to give further difficulty to the use of the authentication card 31 by others.

  Next, FIG.6 and FIG.7 shows the structure explanatory drawing of 3rd Embodiment in the reader part of the authentication system which concerns on this invention. FIG. 6 corresponds to FIG. 1, and FIG. 7 corresponds to FIG. In FIG. 6 (A), the conducting portion mounting member 23 and the partial antenna mounting member 22 in the reader unit 11 are the front and back of the same base material. That is, a plurality of conductive portions 28 are represented on the front surface 71 of the base material as in FIG. 1, but as shown in FIG. 6B, the back surface 72 is electrically connected to the regular conductive portion 28 </ b> A among the conductive portions 28. A supplementary partial antenna 73 having a connected partial antenna pattern is formed.

  In this case, as a configuration of the reader unit 11, an insulating member 74 is provided so that the supplementary partial antenna 73 and the reader-side antenna 24 are not short-circuited. In place of the insulating member 74, an insulating protective layer (insulating protective film) may be formed on the surface of the supplementary partial antenna 73 or the reader-side antenna 24. Even with this configuration, the configuration is the same as that of the reader unit 11 shown in FIG. 1B, and the same effect can be obtained.

  Also in FIG. 7A, as in FIGS. 6A and 6B, the conductive portion mounting member 23 and the partial antenna mounting member 22 are front and back of the same base material, and the surface 71 of the base material is shown in FIG. 5, a plurality of conductive portions 28 similar to those shown in FIG. 7 are electrically connected to four regular conductive portions 28 </ b> A (for example, four corners) of the conductive portions 28 on the back surface 72, as shown in FIG. 7B. The supplementary partial antennas 73-1 to 73-4 of the partial antenna pattern are formed. Also in this case, the supplementary partial antennas 73-1 to 73-4 and the reader side antennas 24-1 to 24-4 are provided by providing the insulating member 74 (which may be the above-described insulating protective layer) between the antenna mounting member 21. To prevent short circuit.

  By the way, although each said embodiment showed the case where the media side antenna provided in RFID34 of the authentication card 31 was made into L shape (reverse L shape), for example, it respond | corresponds to the communication frequency of 950 MHz, it asks especially a shape. Instead, it may have an appropriate shape according to various communication frequencies (for example, 2.45 GHz as other communication frequencies). In short, it is sufficient to delete a part of the antenna pattern and supplement the missing pattern on the reader unit 11 side.

  Further, in the above embodiment, the case where authentication is performed at the time of entering, entering the room, etc. has been described, but it is also possible to record the exit date and user identification information in the log DB 5 by authenticating even when leaving, As a result, the individual entry / exit can all be managed, and the security can be improved. In addition, the shape of the RFID is not limited to the shape of the authentication card, and various shapes can be used, such as improving the convenience by incorporating the RFID into a writing instrument, and making it a shape like a key for opening and closing the door. It is possible.

  The authentication system of the present invention is suitable for a system that authenticates individuals entering and leaving the building, the room, the cabin, a predetermined vehicle, and the like. In addition to the above, it can be used for various purposes such as authentication when opening and closing the safe and authentication when starting the computer system.

FIG. 3 is a configuration explanatory diagram of a first embodiment in a reader unit of the authentication system according to the present invention. It is a block diagram of the non-contact type IC media used with the authentication system of FIG. It is explanatory drawing of the authentication usage form with respect to the non-contact-type IC media in the authentication system of FIG. It is a block block diagram of the control processing apparatus in the non-contact type IC media and authentication system of FIG.1 and FIG.2. It is composition explanatory drawing of 2nd Embodiment in the authentication system which concerns on this invention. It is structure explanatory drawing (1) of 3rd Embodiment in the reader part of the authentication system which concerns on this invention. It is structure explanatory drawing (2) of 3rd Embodiment in the reader part of the authentication system which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Reader part 12 Automatic opening / closing door 21 Antenna mounting member 22 Partial antenna mounting member 23 Conductive part mounting member 24 Reader side antenna 25,73 Supplementary partial antenna 28 Conducting part 31 Authentication card 34 RFID
35 IC chip 36 Media side first antenna 37 Media side second antenna 38 Conductive end 51 Control processing unit 71 Card connection surface 72 Card connection back surface 74 Insulating member

Claims (2)

An authentication system that performs authentication by reading identification information stored in an IC medium having a media antenna for non-contact communication at a predetermined frequency,
A reader unit for communicating with previous Symbol I C media and said frequency,
A control processing device including a process of acquiring and authenticating identification information stored in the IC media when the reader unit is in communication with the IC media,
The IC media is
A part of the pattern of the antenna on the media side formed inside is lost to make communication impossible at the frequency, and the conductive end connected to the end of the part that is missing is exposed.
The reader unit is
An antenna mounting member in which a predetermined number of reader-side antennas for communicating with a media-side antenna of the IC media at a predetermined frequency are formed;
A supplementary partial antenna of a partial pattern that is provided in an insulated state corresponding to the reader-side antenna, and that compensates for a missing pattern of the media-side antenna of the IC media to make a communication state;
A predetermined number of normal conductive portions for conductively connecting the conductive end to the end of the missing pattern of the media-side antenna and the end of the supplemental partial antenna, and a predetermined number that is not conductively connected to the supplemental partial antenna A conduction part mounting member that includes the aerial conduction part and causes an end of the missing pattern to be in communication with the frequency when the end part of the missing pattern is brought into contact with the regular conduction part,
An authentication system comprising: The authentication system according to claim 1, wherein the reader unit includes a plurality of the reader-side antennas, a plurality of supplementary partial antennas corresponding to the reader-side antennas, and a plurality of normal conduction units corresponding to the supplementary partial antennas. Is provided, the control processing device is in a communication state when the conduction end of the media antenna is brought into contact with one of the single normal conduction parts, or for a plurality of normal conduction parts. The communication state is established when the conduction end of the media side antenna is contact-conducted in turn, or the communication state is established in the time zone when the conduction end of the media side antenna is contact-conducted with respect to each normal conduction portion. An authentication system comprising a setting unit that is set to be performed .

Images