JPH10188062A - Method and device for certifying responder unit for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently prevent illegal utilization with an amount lower than an original toll while utilizing the difference of toll corresponding to a car type by discriminating whether vehicle side car type information provided on the side of vehicle for showing the car type of vehicle corresponds to responder side car type information provided for a portable part for showing the car type of vehicle or not. SOLUTION: A vehicle response unit 90 is constituted by mounting an attachable/ detachable portable part 110 on a holder 100 undetachably installed on a vehicle 10. On the side of vehicle 10, a vehicle side car type information holding means 67bA is provided for holding the vehicle side car type information showing the car type of vehicle 10. At a portable part 110, on the other hand, a responder side car type information setting means A is provided for setting the car type information of vehicle 10. Further, a discriminating means B is installed either on the side of vehicle 10 or at the portable part 110, and it is discriminated whether or not the vehicle side car type information held by the vehicle side car type information holding means 67bA corresponds to the responder side car type information set by the responder side car type information setting means A. Thus, the illegal utilization of responder on the different car type of vehicle is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transponder unit for a vehicle, which is mounted on a vehicle passing on a toll road and is used for collecting a toll according to the type of the vehicle at a tollgate or the like.

[0002]

2. Description of the Related Art In recent years, in order to eliminate traffic congestion at a tollgate on a toll road such as an expressway, a gate-side interrogator (interrogator) is used when a vehicle passes through a tollgate gate.
Wireless communication between the vehicle and a transponder on the vehicle side, using electronic cash (prepaid amount) information and postpaid amount (postpaid) amount information stored in the IC card set in the transponder It is being considered to introduce a toll collection system that does not stop toll payments.

In order to introduce the above-mentioned toll collection system, it is necessary to rewrite information relating to the amount of electronic cash every time the balance of electronic cash is increased or tolls paid later are settled. Since the processing is very inconvenient, for example, as disclosed in Japanese Patent Application Laid-Open No. 7-46233, a transponder is provided with an adapter fixed to the vehicle, and a cable and Unit type transponders composed of a main body connected via a connector have been proposed in the past.

In the publication, when the main body taken out of the vehicle is mounted again on the adapter part of the vehicle, the encryption key data generated based on the random number generated by the adapter part is sent to the main body part, An authentication method has been proposed in which an encryption message is provided by an encryption device provided in each of the main body and the main body, and if both encrypted messages do not match, cashless payment processing of tolls cannot be performed.

[0005]

SUMMARY OF THE INVENTION
An ID for identifying each of the transponders is set. However, when the use of electronic cash is limited to toll payment, the vehicle to be charged is a toll vehicle, and the difference in the amount of money is determined by the usage section. However, since it depends on the size of the vehicle, that is, depending on the type of the vehicle, for example, the transponder of another vehicle smaller than the own vehicle is illegally used, and is illegally used at a price lower than the original toll. Is the biggest challenge.

[0006] Conversely, when considering the use of electronic cash to provide versatility without being limited to tolls, the transponder and the vehicle are not limited to simply increasing the degree of identification of each transponder. It is important to prevent the stored collation data from being analyzed from the outside and losing confidentiality.

However, in the above-described authentication method, the encrypted message generated in the adapter unit and the main body, the encryption key data on which the encryption message is based, and the encryption used to convert the encryption key data into the encrypted message are used. Since the encryption rules of the devices are the same, if these contents are analyzed by either the adapter unit or the main unit, there is a possibility that the unauthorized use of the devices is permitted.

[0008] The present invention has been made in view of the above circumstances,
A first object of the present invention is to provide a unit-type transponder composed of a part fixed to a vehicle and a part detachable from the vehicle, in which an original toll utilizing difference in toll depending on the type of vehicle is used. An authentication method for a transponder unit for a vehicle that can efficiently prevent unauthorized use at a low price,
It is an object of the present invention to provide a vehicle transponder unit authentication device suitable for use in carrying out this method.

A second object of the present invention is to provide a unit-type transponder composed of a part fixed to a vehicle and a part detachable from the vehicle, from outside of information used for both authentications. A method of authenticating a transponder unit for a vehicle that can prevent leakage due to the analysis of a transponder unit and enable highly confidential authentication processing, and an authentication device for a transponder unit for a vehicle that is suitable for performing the method. It is in.

[0010]

According to a first aspect of the present invention, there is provided a transponder unit for a vehicle which achieves the first object. The present invention according to Claims 17 to 22, Claims 24 to 27, Claim 29, and Claim 30 relates to an authentication device for a transponder unit for a vehicle. The present invention according to claim 5, claim 10, claim 13 to claim 16, which achieves the second object, relates to an authentication method for a transponder unit for a vehicle, and claims 23 and 28. The present invention according to claims 31 to 34 relates to an authentication device for a transponder unit for a vehicle.

According to a first aspect of the present invention, there is provided a method for authenticating a transponder unit for a vehicle according to the first aspect of the present invention. A vehicle transponder unit configured by mounting a possible portable unit, and an information signal wirelessly transmitted and received between the outside of the vehicle and the holder for performing various fee settlement processes for the vehicle. In performing authentication between the portable unit mounted on the vehicle and the vehicle side, vehicle-side vehicle type information indicating a vehicle type of the vehicle possessed by the vehicle side, and a responder-side vehicle type indicating a vehicle type of the vehicle possessed by the portable unit It is characterized in that it is determined whether or not the information corresponds.

According to a second aspect of the present invention, in the method for authenticating a transponder unit for a vehicle according to the present invention, one of the vehicle-side vehicle type information and the transponder-side vehicle type information is set to the vehicle corresponding to the one. Out of a plurality of storage means provided in any one of the side and the portable part, stored in at least one of the storage means according to the vehicle type of the vehicle, and stored in the portable part and the vehicle side mounted on the holder. When performing authentication between the plurality of storage units, the plurality of storage units read out from the at least one storage unit corresponding to the vehicle type of the vehicle indicated by one of the vehicle-side vehicle type information and the transponder-side vehicle type information. It is determined whether one of the vehicle-side vehicle type information and the transponder-side vehicle type information corresponds to the other one of the vehicle-side vehicle type information and the transponder-side vehicle type information. It was.

Further, in the authentication method of the transponder unit for a vehicle according to the present invention, the vehicle corresponding to one of the vehicle type information and the transponder type information may be used. Out of the storage means provided in one of the vehicle side and the portable part, stored in at least one address location corresponding to the vehicle type of the vehicle indicated by the other of the vehicle side vehicle type information and the responder side vehicle type information Let
When performing authentication between the portable unit attached to the holder and the vehicle, the type of the vehicle indicated by one of the vehicle type information and the transponder type information in the storage unit. One of the vehicle-side vehicle type information and the transponder-side vehicle type information read out from the at least one address location corresponding to any one of the vehicle-side vehicle type information and the transponder-side vehicle type information It is determined whether or not it corresponds to the other.

According to a fourth aspect of the present invention, there is provided a method for authenticating a transponder unit for a vehicle according to the present invention, wherein the transponder-side vehicle type information is transmitted to either the vehicle or the portable unit mounted on the holder. In this configuration, the information is generated based on the vehicle type information of the vehicle.

Further, in order to achieve the second object, the authentication method for a transponder unit for a vehicle according to the present invention according to claim 5, wherein the vehicle side of the vehicle having the portable unit mounted on the holder. The vehicle type information, in either the vehicle side, the portable unit attached to the holder,
The transponder-side vehicle type information of the portable unit attached to the holder again after being separated from the holder after being separated from the holder by being encrypted by the encrypted data and having the portable unit as the transponder-side vehicle type information. In one of the vehicle side and the vehicle side vehicle type information encrypted by the encrypted data, decrypted by the decryption data for determining the original vehicle side vehicle type information before encryption, the decrypted data By determining whether or not the transponder-side vehicle type information decrypted by the above corresponds to the vehicle-side vehicle type information possessed by the vehicle, the vehicle-side vehicle type information and the transponder-side vehicle type information correspond to each other. It is made to determine whether or not.

According to a sixth aspect of the present invention, there is provided a method for authenticating a transponder unit for a vehicle according to the present invention, wherein the method comprises the steps of: A vehicle transponder unit configured by mounting a possible portable unit, and an information signal wirelessly transmitted and received between the outside of the vehicle and the holder for performing various fee settlement processes for the vehicle. Upon performing authentication between the portable unit mounted on the vehicle and the vehicle side, the information signal is provided to the vehicle transponder unit from outside the vehicle, and the vehicle is determined outside the vehicle. It is characterized in that it is determined whether or not the vehicle type determination information indicating the vehicle type corresponds to the transponder-side vehicle type information indicating the vehicle type of the vehicle possessed by the portable unit.

Further, in the authentication method of the transponder unit for a vehicle according to the present invention, the transponder-side vehicle type information is stored in the storage unit provided in the portable unit, and the vehicle type determination information is stored in the storage unit. At least one according to the type of vehicle shown
When the authentication is performed between the portable unit mounted on the holder and the vehicle side, the plurality of storage units correspond to the vehicle type of the vehicle indicated by the vehicle type determination information. It is determined whether or not the transponder-side vehicle type information read from the at least one storage unit corresponds to the vehicle type determination information.

According to a second aspect of the present invention, there is provided a method for authenticating a transponder unit for a vehicle according to the present invention, wherein the transponder-side vehicle type information is indicated by the vehicle type determination information among storage means provided in the portable unit. When the authentication is performed between the portable unit mounted on the holder and the vehicle side, the vehicle is stored in at least one address location corresponding to the vehicle type of the vehicle, and the vehicle indicated by the vehicle type determination information in the storage unit It is determined whether or not the transponder-side vehicle type information read from the at least one address location corresponding to the vehicle type corresponds to the vehicle type determination information.

Further, according to a ninth aspect of the present invention, in the authentication method for a transponder unit for a vehicle according to the present invention, the vehicle side has vehicle side vehicle type information indicating a vehicle type of the vehicle, and the transponder side vehicle type information includes At least one of the vehicle side and the portable unit mounted on the holder is generated based on the vehicle-side vehicle type information of the vehicle.

According to a tenth aspect of the present invention, there is provided an authentication method for a transponder unit for a vehicle according to the present invention, wherein the portable unit is mounted on the holder. By encrypting the vehicle type information with the encrypted data, the transponder-side vehicle type information is generated,
The transponder-side vehicle type information of the portable unit attached to the holder again after being detached from the holder, and the vehicle encrypted with the encrypted data in one of the portable unit and the vehicle. The original vehicle-side vehicle type information before encryption is decoded from the side-vehicle type information using decryption data for determining the original vehicle-side vehicle type information, and the transponder-side vehicle type information decrypted by the decrypted data is determined outside the vehicle. The vehicle-side vehicle type information and the transponder-side vehicle type information are determined by determining whether or not to correspond to vehicle type determination information indicating the vehicle type of the vehicle given to the vehicle transponder unit by the information signal. Judgment as to whether or not to correspond is made.

Furthermore, in order to achieve the first object, the authentication method for a transponder unit for a vehicle according to the present invention according to the eleventh aspect of the present invention, comprises the steps of: The content of the vehicle-side vehicle type information is updated in one of the portable units, and the responder-side vehicle type information is generated based on the updated vehicle-side vehicle type information every time the vehicle-side vehicle type information is updated. The latest responder-side vehicle type information is updated.

According to a twelfth aspect of the present invention, in the method for authenticating a transponder unit for a vehicle according to the present invention, the content of the vehicle side model information is updated by transmitting the information between the transponder unit for a vehicle and the outside of the vehicle. It is performed at a frequency corresponding to a change in the degree of signal transmission / reception.

Further, in order to achieve the second object, the authentication method for a transponder unit for a vehicle according to the present invention according to the thirteenth aspect, comprises:
An information signal is wirelessly transmitted and received between a vehicle transponder unit configured by attaching a detachable portable unit to the holder and the outside of the vehicle, and payment processing of various charges related to the vehicle is performed. In performing the authentication, when performing authentication between the portable unit attached to the holder and the vehicle side,
The vehicle-side identification information for identifying the vehicle possessed by the vehicle side is encrypted with encrypted data at one of the vehicle side and the portable unit mounted on the holder, and the transponder side is transmitted to the portable unit. The identification information is given, and the transponder-side identification information of the portable unit attached to the holder again after being detached from the holder, in one of the portable unit and the vehicle, by the encrypted data. The decrypted decrypted data for calculating the original vehicle-side specific information before encryption from the encrypted vehicle-side specific information, and the transponder-side specific information decrypted by the decrypted data, It is determined whether or not the information corresponds to the vehicle-side identification information of the vehicle.

According to a fourteenth aspect of the present invention, in the method for authenticating a transponder unit for a vehicle according to the present invention, the vehicle-side identification information and the transponder-side identification information are used as vehicle type information for specifying a vehicle type of the vehicle. I made it.

Further, in the authentication method for a transponder unit for a vehicle according to the present invention, the portable unit may be mounted on the holder while the portable unit is mounted on one of the vehicle side and the portable unit. The content of the vehicle-side identification information is updated, and each time the vehicle-side identification information is updated, the transponder-side identification information is updated based on the updated vehicle-side identification information. Was updated.

According to another aspect of the present invention, there is provided a method for authenticating a transponder unit for a vehicle, the method comprising: It is performed at a frequency corresponding to a change in the degree of signal transmission / reception.

Furthermore, in order to achieve the first object, the authentication apparatus for a transponder unit for a vehicle according to the present invention as described in claim 17 is, as shown in the basic configuration diagram of FIG. The holder 1 is provided on the holder 100 provided.
A transponder unit 90 for a vehicle configured by mounting a portable unit 110 detachable from the
Between the vehicle 10 and the vehicle 10
When carrying out the settlement process for various charges related to the portable unit 110 attached to the holder 100 and the vehicle 10
Device for performing authentication between the vehicle 1 and the vehicle 1
The vehicle-side vehicle type information holding means 67bA provided on the 0 side and holding vehicle-side vehicle type information indicating the vehicle type of the vehicle 10, and the transponder-side vehicle type information provided on the portable unit 110 and indicating the vehicle type of the vehicle 10. The transponder-side vehicle type information setting means A to be set, and the vehicle-side vehicle type information holding means 67bA provided in one of the vehicle 10 and the portable unit 110.
And a determining means B for determining whether or not the vehicle-side vehicle type information held by the vehicle and the transponder-side vehicle type information set in the transponder-side vehicle type information setting means A correspond to each other. The holder 100 and the portable unit 110 mounted on the holder 100 function as the vehicle transponder unit 90 when the determination unit B determines that the information corresponds to the transponder-side vehicle type information. Is allowed.

The authentication apparatus for a transponder unit for a vehicle according to the present invention, which is provided in one of the vehicle 10 and the portable unit 110, includes the vehicle type information and the transponder. A plurality of storage units a to n in which any one of the side vehicle type information is stored, and one of the plurality of storage units a to n provided in one of the vehicle 10 side and the portable unit 110. At least one of the storage means a corresponding to the type of the vehicle 10 indicated by one of the vehicle type information and the transponder type information.
To n, an access unit C for reading any one of the vehicle-side vehicle type information and the transponder-side vehicle type information, and one of the vehicle-side vehicle type information and the transponder-side vehicle type information is Of the plurality of storage means a to n, the information is stored in the at least one storage means a to n corresponding to the type of the vehicle 10 indicated by one of the vehicle-side vehicle type information and the transponder-side vehicle type information. It was assumed that.

Further, in the authentication apparatus for a transponder unit for a vehicle according to the present invention, the plurality of storage units a to n are provided in the portable unit 110 and the plurality of storage units a to n are provided. n, the transponder-side vehicle type information is stored in the at least one storage unit a to n corresponding to the vehicle type of the vehicle 10 indicated by the transponder-side vehicle type information, and the access unit C stores the plurality of storage units. Among the means a to n, the transponder type information is read from the at least one storage means a to n corresponding to the type of the vehicle 10 indicated by the vehicle type information, and the transponder type information setting means A To
The access means C comprises at least one storage means a
To n, the transponder-side vehicle type information read out is set.

Further, the authentication apparatus for a transponder unit for a vehicle according to the present invention is provided on one of the vehicle 10 side and the portable section 110 as shown in the basic configuration diagram of FIG. Storage means D for storing one of the vehicle-side vehicle type information and the transponder-side vehicle type information in at least one address location corresponding to the vehicle type of the vehicle 10 indicated by the one; From at least one address location of the storage means D corresponding to the type of the vehicle 10 indicated by one of the vehicle type information and the transponder-side vehicle type information, the vehicle-side vehicle type information and the transponder-side vehicle type information Second access means E for reading either one of them is further provided.

Further, in the authentication apparatus for a transponder unit for a vehicle according to the present invention as set forth in claim 21, the storage means D is provided in the portable portion 110, and the vehicle type of the transponder side of the storage means D is provided. The transponder-side vehicle type information is stored in at least one address location of the storage unit D corresponding to the vehicle type of the vehicle 10 indicated by the information, and the second access unit E is one of the storage units D in the vehicle unit. The responder-side vehicle type information is read from the at least one address location corresponding to the vehicle type of the vehicle 10 indicated by the side vehicle type information, and the responder-side vehicle type information setting means A stores the second access means E in the storage means. The transponder-side vehicle type information read from at least one portion of D is set.

The authentication device for a transponder unit for a vehicle according to the present invention as described in claim 22 is provided on either the vehicle 10 side or the portable unit 110 as shown in the basic configuration diagram of FIG. And the vehicle-side vehicle type information holding means 67
bA further includes a transponder-side vehicle type information generating means F for generating the transponder-side vehicle type information based on the vehicle-side vehicle type information held by the transponder-side vehicle type information generated by the transponder-side vehicle type information generating means F Information is set in the transponder-side vehicle type information setting means A.

Further, in order to achieve the second object, in the authentication apparatus for a transponder unit for a vehicle according to the present invention as set forth in claim 23, the transponder-side vehicle type information generating means F holds encrypted data. An encrypted data holding means G and an encrypting means H for encrypting the vehicle type information held by the vehicle type information holding means 67bA with the encrypted data held by the encrypted data holding means G. And
The transponder-side vehicle type information setting means A is provided with the encryption means H
The vehicle-side vehicle type information encrypted by the encrypted data is set as the transponder-side vehicle type information, and the determination unit B transmits the vehicle-side vehicle type information encrypted by the encryption unit H using the encrypted data. And decrypted data holding means J for holding decrypted data for determining the original vehicle-side vehicle type information before encryption, and the responder-side vehicle type information set in the responder-side vehicle type information setting means A And decoding means K for decoding with the decoded data held by the decoded data holding means J, and the transponder-side vehicle type decoded by the decoding means K with the decoded data. When it is determined that the information corresponds to the vehicle-side vehicle type information held by the vehicle-side vehicle type information holding means 67bA, the holder 100 and the portable unit 110 mounted on the holder 100 It was that it allow them to function as a serial response unit 90 for a vehicle.

Further, in order to achieve the first object, the authentication apparatus for a transponder unit for a vehicle according to the present invention as described in claim 24 is, as shown in the basic configuration diagram of FIG. The holder 100 is provided with the holder 10.
The wireless communication device transmits and receives an information signal between a vehicle transponder unit 90 configured by attaching a detachable portable unit 110 to the vehicle 0 and the outside 29 of the vehicle. An apparatus for performing authentication between the portable unit 110 attached to the holder 100 and the vehicle 10 when performing the payment process, wherein the portable unit 1
And a transponder-side vehicle type information setting means A provided in the vehicle 10 for setting the transponder-side vehicle type information indicating the vehicle type of the vehicle 10; The vehicle type determination information, which is given to the vehicle transponder unit 90 by the information signal from the outside 29 of the vehicle and indicates the vehicle type of the vehicle 10 determined on the outside 29 of the vehicle, is transmitted to the transponder-side vehicle type information setting means A. A second step of determining whether or not it corresponds to the set vehicle type information of the transponder;
When the second determination means N determines that the vehicle type determination information corresponds to the transponder-side vehicle type information, the holder 100 and the portable unit 110 attached to the holder 100 are determined. Are permitted to function as the transponder unit 90 for a vehicle.

Further, the authentication apparatus for a transponder unit for a vehicle according to the present invention is provided in the portable section 110 and includes a plurality of storage means a to n for storing the transponder type information. , The vehicle 10 side and the portable unit 110
And the plurality of storage means a to n
And a third access unit P for reading the transponder-side vehicle type information from at least one of the storage units a to n corresponding to the vehicle type of the vehicle 10 indicated by the vehicle type determination information. The vehicle type information is at least one of the plurality of storage units a to n corresponding to the vehicle type of the vehicle 10 indicated by the responder-side vehicle type information.
n, and the transponder-side vehicle type information read from the at least one storage unit an by the third access unit P is set in the transponder-side vehicle type information setting unit A. did.

Further, the authentication apparatus for a transponder unit for a vehicle according to the present invention is provided in the portable section 110 as shown in the basic configuration diagram of FIG. A storage unit D stored in at least one address location corresponding to the vehicle type of the vehicle 10 indicated by the responder-side vehicle type information; and the vehicle 10 indicated by the vehicle type determination information.
And a fourth access unit R for reading out the responder-side vehicle type information from at least one address location of the storage unit D corresponding to the vehicle type of the vehicle. Means R is the storage means D
, The transponder-side vehicle type information read from at least one of the above is set.

Further, the authentication device for a transponder unit for a vehicle according to the present invention is provided on the side of the vehicle 10 as shown in the basic configuration diagram of FIG. Vehicle-side vehicle type information holding means 67bA for holding vehicle-side vehicle type information;
0, and a transponder-side vehicle type information generating unit F that generates the transponder-side vehicle type information based on the vehicle-side vehicle type information held by the vehicle-side vehicle type information holding unit 67bA, The transponder-side vehicle type information generated by the transponder-side vehicle type information generating means F is set in the transponder-side vehicle type information setting means A.

In order to achieve the second object, in the authentication apparatus for a transponder unit for a vehicle according to the present invention, the transponder-side vehicle type information generating means F holds encrypted data. An encrypted data holding means G and an encrypting means H for encrypting the vehicle type information held by the vehicle type information holding means 67bA with the encrypted data held by the encrypted data holding means G. The vehicle-side vehicle type information encrypted by the encrypting means H with the encrypted data is set in the transponder-side vehicle type information setting means A as the transponder-side vehicle type information, and the second determination means is provided. N is decrypted data holding decrypted data for determining the original vehicle-side vehicle type information before encryption from the vehicle-side vehicle type information encrypted by the encrypting means H with the encrypted data. Holding means J and decoding means K for decoding the transponder type information set in the transponder type information setting means A by the decoded data held by the decoded data holding means J. When the decoding unit K determines that the transponder-side vehicle type information decrypted by the decrypted data corresponds to the vehicle type determination information held by the vehicle type determination information holding unit M, The holder 100 and the portable unit 1 mounted on the holder 100
10 is permitted to function as the transponder unit 90 for a vehicle.

Further, in order to achieve the first object, the authentication apparatus for a transponder unit for a vehicle according to the present invention is provided on one of the vehicle 10 side and the portable section 110, The portable unit 1 is attached to the holder 100.
A vehicle type information updating unit S for updating the contents of the vehicle side vehicle type information held by the vehicle side vehicle type information holding unit 67bA while the vehicle 10 is mounted; Each time the vehicle type information updating unit S updates the vehicle side vehicle type information, the transponder side vehicle type information is generated based on the updated vehicle side vehicle type information, and is set in the transponder side vehicle type information setting unit A. Each time the responder-side vehicle type information is generated by the responder-side vehicle type information generating means F based on the updated vehicle-side vehicle type information, the latest responder-side vehicle type information is generated. It will be updated to.

The authentication apparatus for a transponder unit for a vehicle according to the present invention, which is provided in one of the vehicle 10 side and the portable unit 110, is provided with the transponder unit 90 and the vehicle transponder unit. The vehicle type information updating means S further includes a change detecting means T for detecting a change in the degree of transmission and reception of the information signal performed between the information processing apparatus and the outside 29 of the vehicle.
Updating the content of the vehicle-side vehicle type information at a frequency corresponding to a change in the degree of transmission and reception of the information signal between the vehicle transponder unit 90 and the outside 29 of the vehicle detected by the change detection means T And

Further, in order to achieve the second object, the authentication apparatus for a transponder unit for a vehicle according to the present invention as described in claim 31 is, as shown in the basic configuration diagram of FIG. The holder 1 is provided on the holder 100 provided.
A transponder unit 90 for a vehicle configured by mounting a portable unit 110 detachable from the
Between the vehicle 10 and the vehicle 10
When carrying out the settlement process for various charges related to the portable unit 110 attached to the holder 100 and the vehicle 10
Device for performing authentication between the vehicle 1 and the vehicle 1
A vehicle-side identification information holding means 67bB provided on the 0 side and holding vehicle-side identification information for identifying the vehicle 10, and an encryption provided on one of the vehicle 10 and the portable unit 110 and holding encrypted data. The encrypted data holding means G and the encrypted data held by the encrypted data holding means G and held by the vehicle-side specific information holding means 67bB. Second encrypting means V for encrypting the vehicle-side identifying information; and the vehicle-side identifying information provided in the portable unit 110 and encrypted by the second encrypting means V with the encrypted data is the responder-side identifying information. Transponder-side specific information setting means W set as information, the vehicle 10 and the portable unit 1
10, the second encrypting means V
Means for holding decrypted data for determining the original vehicle-side identification information before encryption from the vehicle-side identification information encrypted by the encrypted data.
The decryption data holding means J is provided in any one of the vehicle 10 and the portable section 110 and holds the transponder-side identification information set in the transponder-side identification information setting means W. Second to decrypt with decrypted data
A decoding unit X, the transponder-side identification information provided in one of the vehicle 10 and the portable unit 110 and decoded by the second decoding unit X with the decoded data, A third determining unit Y for determining whether or not the vehicle-side identification information held by the information holding unit 67bB corresponds to the vehicle-side identification information, wherein the transponder-side identification information decrypted by the decrypted data; When the third determining unit Y determines that the vehicle-side specific information held by the specific information holding unit 67bB corresponds, the holder 100
And the portable unit 110 attached to the holder 100 is allowed to function as the transponder unit 90 for a vehicle.

According to a thirty-second aspect of the present invention, in the authentication apparatus for a transponder unit for a vehicle according to the present invention, the vehicle-side identification information and the transponder-side identification information are vehicle type information for specifying a vehicle type of the vehicle. It was taken.

Further, the authentication apparatus for a transponder unit for a vehicle according to the present invention is provided on one of the vehicle 10 side and the portable section 110, and the portable section 110 is mounted on the holder 100. The apparatus further comprises a specific information updating means Z for updating the content of the vehicle-side specific information held by the vehicle-side specific information holding means 67bB while being mounted, and wherein the second encrypting means V includes the specific information updating means. Each time Z updates the vehicle-side identification information, the vehicle-side identification information is encrypted, and the responder-side identification information set in the responder-side identification information setting means W is such that the second encryption means V Each time the updated vehicle-side identification information is encrypted,
It is assumed that the information is updated to the latest transponder-side identification information.

Further, the authentication apparatus for a transponder unit for a vehicle according to the present invention is provided on one of the vehicle 10 and the portable unit 110, and the transponder unit 90 for the vehicle and the transponder unit 90 The apparatus further includes a change detection unit T for detecting a change in the degree of transmission and reception of the information signal performed between the specific information update unit Z and the outside of the vehicle.
Updating the content of the vehicle-side identification information at a frequency corresponding to a change in the degree of transmission and reception of the information signal between the vehicle transponder unit 90 and the outside 29 of the vehicle detected by the change detection means T And

According to the method for authenticating a transponder unit for a vehicle according to the first aspect of the present invention, when the portable unit detachable from the vehicle is mounted on a holder fixed to the vehicle, the portable unit is attached to the portable unit. It is determined whether or not the information related to the vehicle type that the vehicle and the vehicle have correspond to each other, so when the portable unit that was mounted on another vehicle of a different vehicle type is mounted, the information on the vehicle side due to the difference of the vehicle type and To avoid the use of transponders of different types of vehicles, which are settled at a lower price than the original toll, rather than assigning an ID to each vehicle or transponder. It is possible to easily and reliably prevent the occurrence.

The same applies to the authentication apparatus for a transponder unit for a vehicle according to the present invention.

According to the authentication method for a transponder unit for a vehicle according to the present invention, if the vehicle type indicated by the vehicle type information is different, the vehicle type information is transmitted to either the vehicle side or the portable unit. Since the storage means to be stored is physically different, whether or not the vehicle type information itself corresponds, and whether or not one of the vehicle type information of the vehicle side and the portable unit is stored in the correct storage means corresponding to the vehicle type of the vehicle. It is possible to determine whether or not the portable unit is mounted on a legitimate vehicle by the following two factors. Therefore, it is possible to more reliably prevent unauthorized use of the portable unit of another vehicle of a different model. Becomes

The same can be said for the authentication apparatus for a transponder unit for a vehicle according to the present invention.

Furthermore, according to the authentication method of the transponder unit for a vehicle according to the present invention, when the vehicle type indicated by the vehicle type information is different, the vehicle type information is transmitted to either the vehicle side or the portable unit. Since the address location of the storage means for storing is different, two items, namely, the presence or absence of correspondence of the vehicle type information itself and whether or not one of the vehicle type information of the vehicle side and the portable unit is stored at the correct address location according to the vehicle type. The two factors make it possible to determine whether or not the portable unit is mounted on a legitimate vehicle. Therefore, the unauthorized use of the portable unit of another vehicle of a different vehicle type can be more reliably and in a single storage. It is possible to prevent it at low cost by means.

The same applies to the authentication apparatus for a transponder unit for a vehicle according to the present invention.

According to the authentication method of the transponder unit for a vehicle according to the present invention, the vehicle type information based on the vehicle type information possessed by the vehicle to which the portable unit is mounted is replaced with the regular vehicle type. Since the mobile unit has the vehicle type information to be indicated, when the mobile unit is mounted on a holder of another vehicle of a different vehicle type, the mobile unit type information of the mobile unit does not always correspond to the vehicle type information of the vehicle. This makes it possible to reliably prevent the section from being illegally used for the toll adjustment process of another vehicle.

The same applies to the authentication apparatus for a transponder unit for a vehicle according to the present invention.

Further, according to the authentication method for a transponder unit for a vehicle according to the present invention, the vehicle type information held by the portable unit is obtained by encrypting the vehicle type information held by the vehicle side. Therefore, there is no perfect match between the two, and since the encryption or decryption data that is the basis for matching the vehicle type information of both is only one of the vehicle side and the transponder side, It becomes difficult to forge the vehicle type information on the transponder side corresponding to the vehicle type information on the vehicle side by analysis from the outside, and it is possible to reliably prevent unauthorized use of the portable unit of another vehicle.

The same applies to the authentication apparatus for a transponder unit for a vehicle according to the present invention.

According to the method for authenticating a transponder unit for a vehicle according to the present invention, when the vehicle passes through, for example, a gate of a toll gate, the type of the vehicle is detected on the gate side, and the detection is performed. If the vehicle type is notified to the transponder unit for the vehicle by sending and receiving information signals, the portable unit is based on objective vehicle type information obtained by detecting the vehicle outside the vehicle Is determined, so that when a portable unit attached to another vehicle of a different model is attached, the correspondence between the information on the vehicle side due to the difference in the model does not occur, and Unauthorized use of the transponders of different types of vehicles, which are settled at a lower price than the toll, can be more easily and reliably prevented than assigning an ID to each vehicle or transponder. .

The same applies to the authentication apparatus for a transponder unit for a vehicle according to the present invention.

Further, according to the method for authenticating a transponder unit for a vehicle according to the present invention described in claim 7, similar to the method for authenticating a transponder unit for a vehicle according to the present invention described in claim 2, the vehicle type information can be obtained. If the type of vehicle shown is different, the storage means for storing the vehicle type information in the portable unit is physically different, so that the correspondence of the vehicle type information itself and the vehicle type information of the mobile unit are stored in the correct storage means corresponding to the vehicle type of the vehicle. It is possible to determine whether or not the portable unit is mounted on a legitimate vehicle by the two factors of
It is possible to more reliably prevent unauthorized use of the portable unit of another vehicle of a different vehicle type.

The same applies to the authentication apparatus for a transponder unit for a vehicle according to the present invention.

According to the method for authenticating a transponder unit for a vehicle according to the present invention described in claim 8, similarly to the method for authenticating a transponder unit for a vehicle according to the present invention described in claim 3,
If the vehicle type indicated by the vehicle type information is different, the address location of the storage means for storing the vehicle type information in the portable unit is different. Therefore, the correspondence of the vehicle type information itself and the vehicle type information of the portable unit are stored in the correct address location according to the vehicle type. It is possible to determine whether or not the portable unit is mounted on a legitimate vehicle by the two factors of whether or not
Unauthorized use of the mobile part of other vehicles of different models,
In addition, it is possible to prevent the cost by a single storage means at low cost.

The same applies to the authentication apparatus for a transponder unit for a vehicle according to the present invention.

Further, according to the authentication method of the transponder unit for a vehicle according to the present invention, the vehicle type information based on the vehicle type information of the vehicle to which the portable unit is mounted is obtained.
Since the portable unit has the vehicle type information indicating the regular vehicle type, when the portable unit is mounted on a holder of another vehicle of a different vehicle type, the vehicle type outside the vehicle shows the same vehicle type information as the vehicle type information of the vehicle. To ensure that the vehicle type information in the mobile unit does not always correspond to the objective vehicle type information obtained by detecting the mobile unit, and to prevent the mobile unit from being illegally used for the toll adjustment process for other vehicles. It becomes possible.

The same applies to the authentication apparatus for a transponder unit for a vehicle according to the present invention.

According to the authentication method for a transponder unit for a vehicle according to the present invention, the vehicle type information held on the portable unit side is obtained by encrypting the vehicle type information held on the vehicle side. Therefore, the content of objective vehicle type information obtained by detecting the vehicle outside the vehicle does not completely match the vehicle type information held on the portable unit side, and
Since there is only encryption or decryption data on either the vehicle side or the transponder side, which is the basis for matching both types of vehicle information, the response corresponding to the vehicle type information from the outside of the vehicle by external analysis Forgery of the vehicle type information on the device side is made difficult, so that unauthorized use of the portable unit of another vehicle can be reliably prevented.

The same applies to the authentication apparatus for a transponder unit for a vehicle according to the present invention.

Furthermore, according to the authentication method for a transponder unit for a vehicle according to the present invention, since the vehicle type information is updated on both the vehicle side and the portable unit,
Forgery the vehicle type information that the original mobile unit had when the original mobile unit was removed from the holder of the vehicle to the mobile unit that was stolen from another vehicle and brought it to the mobile unit from another vehicle. It is difficult to externally analyze and recognize the vehicle type information on the vehicle side, which is the basis of the vehicle type information of the original mobile unit, and the mobile unit and the vehicle side brought in from other vehicles by using the forged vehicle type information It is possible to prevent a fraudulent attempt to take correspondence of the vehicle type information with the vehicle.

The same can be said for the authentication apparatus for a transponder unit for a vehicle according to the present invention.

According to the method for authenticating a transponder unit for a vehicle according to the present invention, if the transmission and reception of an information signal for toll adjustment processing with the toll road side frequently occurs, the method may be used. Because the vehicle type information on the vehicle side is updated a lot by the minute and the vehicle type information on the portable part is also updated a lot, the fraudulent attempt to match the vehicle type information with the vehicle side by falsifying the vehicle type information is used. The more frequently the portable unit is, the more accurate it can be prevented.

The same applies to the authentication apparatus for a transponder unit for a vehicle according to the present invention.

According to a thirteenth aspect of the present invention, the specific information held by the portable unit is obtained by encrypting the specific information held by the vehicle. Therefore, there is no direct agreement between the two, and since the encryption or decryption data serving as the basis for associating the specific information of both is only in one of the vehicle side and the transponder side, the external It becomes difficult to forge the specific information on the transponder side corresponding to the specific information on the vehicle side by the analysis from, and it is possible to reliably prevent unauthorized use of the portable unit of another vehicle.

The same can be said for the authentication apparatus for a transponder unit for a vehicle according to the present invention.

Further, according to the authentication method of the transponder unit for a vehicle according to the present invention, the specific information is the information for specifying the vehicle type, so that the unauthorized use of the portable unit of the different vehicle type can be prevented. It is possible to prevent the forgery of the specific information or the vehicle type information with higher accuracy in terms of difficulty.

The same applies to the authentication apparatus for a transponder unit for a vehicle according to the present invention.

According to the method of authenticating a transponder unit for a vehicle according to the present invention, the identification information of the portable unit is updated in accordance with the update of the identification information of the vehicle in which the vehicle type is identified. Since the information is updated, it is possible to prevent a fraudulent attempt to forge specific information corresponding to the specific information on the vehicle side and to provide the portable unit with the specific information and take correspondence with the specific information with the vehicle side.

The same can be said for the authentication apparatus for a transponder unit for a vehicle according to the present invention.

Further, according to the method for authenticating a transponder unit for a vehicle according to the present invention, if the transmission and reception of an information signal for toll adjustment processing with the toll road frequently occur, the Because the specific information on the vehicle side is updated a lot and the specific information on the mobile part is also updated a lot, the use of fraudulent attempts to match the specific information with the vehicle side by falsifying the specific information is used. The more frequently the portable unit is, the more accurate it can be prevented.

The same applies to the authentication apparatus for a transponder unit for a vehicle according to the present invention.

[0077]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for authenticating a transponder unit for a vehicle according to the present invention will be described below with reference to the drawings.

First, a schematic structure of a tollgate for collecting tolls of a vehicle equipped with the vehicle transponder unit according to the present invention will be described with reference to a perspective view of FIG.

FIG. 8 is a perspective view of a tollgate on a toll road. The tollgate has a uniform toll regardless of the toll section, and the toll changes only depending on the vehicle type. It is set up at a centralized toll collection point. And
8, reference numeral 10 denotes a vehicle, and reference numeral 20 denotes a tollgate.

The tollgate 20 includes a plurality of gates 21 for running the vehicle, a separation zone 23 separating the gates 21, a vehicle type detector 25 for detecting the type of the vehicle 10 passing through each gate 21, A roof 27 that covers the gate 21, an interrogator 29 (corresponding to the outside of the vehicle) and an antenna 29 a that is suspended from the lower part of the roof 27 located above each gate 21 are provided.

The above-mentioned vehicle type detector 25 and interrogator 29
For example, it is connected to a tollgate host computer (hereinafter, abbreviated as tollgate host) 30 installed near the tollgate 20 such as in a room of a tollgate office. Are connected to each other via a telephone line or the like to form a LAN (local area network).

Each vehicle 10 has the interrogator 29
A transponder unit 90 for transmitting and receiving a wireless signal related to toll collection between the two is mounted.

FIG. 9 is a perspective view showing the cabin structure of the vehicle 10. In the cabin of the vehicle 10, a dashboard in which a meter panel 11, a car stereo 13, an air conditioner 15, a glove box 17 and the like are collectively arranged. A front glass 19 is provided in front of the dashboard 18. The transponder unit 90 according to the present invention is installed on the upper surface 18a of the dashboard 18.

Next, a transponder unit 90 employing the authentication device according to the first embodiment of the present invention will be described with reference to FIGS.

FIG. 10 is a perspective view showing the configuration of the transponder unit according to the first embodiment. The transponder unit 90 includes a holder 100 fixed to the upper surface 18 a of the dashboard 18 of the vehicle 10, and the holder 100. And a transponder main body 110 detachably attached to the main body.

The holder 100 has a mounting recess 101 which is slightly upwardly inclined and is open at the front. The male connector 10 is provided on the bottom of the mounting recess 101 so as to face forward.
2 are protruding.

The rigid printed circuit board 103 is accommodated in the holder 100. The connector pattern formed on the printed circuit board 103 is
The male connector 102 protrudes from the mounting recess 101 into the mounting recess 101. The printed circuit board 1
03, as shown in the block diagram of FIG.
7a and an E ² PROM 67b are mounted.

The holder 100 is attached to the NVM 67a.
Type information indicating the type of the vehicle 10 in which the vehicle is fixed, and a holder ID which is a personal identification number assigned to the vehicle 10.
Is written in advance, and both the vehicle type information and the holder ID are configured to be non-rewritable.

The E ² PROM 67 b is
Of the transponder main body 110 once removed from the
A random ID for confirming the validity of the holder 100 is held.
After passing through the gate 21, the E ² PROM 67b and the transponder main body 110 are set on the holder 100 side.
It is held on both sides.

Further, a microstrip antenna (hereinafter abbreviated as an antenna) is provided inside the holder 100.
104 are provided, and the male connector 102 includes:
The NVM 67a, the E ² PROM 67b, and the vehicle 1
0 of the battery 13 and the antenna 104
And a terminal connected to the terminal.

On the other hand, the transponder main body 110 (corresponding to a portable unit) includes a liquid crystal display 72, a numeric keypad 73,
A modulation / demodulation circuit 77, a power supply circuit 78, and a microcomputer (hereinafter abbreviated as a microcomputer) 79 are provided.

As shown in the sectional view of FIG. 12, a female connector 112 for electrically connecting the male connector 102 of the holder 100 is provided on the rear surface 111e of the housing 111. Reference numeral 112 denotes a terminal for connecting both terminals of the NVM 67a and the E ² PROM 67b to the microcomputer 79 corresponding to each terminal provided on the female connector 112 of the transponder main body 110;
And a terminal for connecting the terminal of the antenna 104 to the modulation / demodulation circuit 77.

In this embodiment, the transponder main body 11 is used.
0 is the mounting recess 10 of the holder 100 from the back surface 111e side.
1, the flexible stopper 105 is engageable with the upper front side of the housing 111 of the transponder main body 110.
Extend forward from the upper part of the holder 100, and the stopper 105 and the housing 111
11 is fixed in the mounting recess 101 without play, and in this state, the female connector 112 of the transponder main body 110 is electrically connected to the male connector 102 of the holder 100.

That is, in this embodiment, the male connector 102
And the female connector 112 are the holder 100 and the transponder main body 110.
The stopper 105 functions as a mechanical connection between the holder 100 and the transponder main body 110.

As shown in FIG. 11, an E ² PROM 76, a modulation / demodulation circuit 77, a power supply circuit 7
8 and a microcomputer 79 are provided.

In the E ² PROM 76, prepaid amount information indicating the remaining amount of electronic cash which is prepaid for toll payment through a bank account or the like is written in advance.
Further, vehicle type information read from the NVM 67a, transponder invalidation data indicating that the transponder main body 110 is invalid, and the like are written and read into the E ² PROM 76. Further, based on the vehicle type information of the NVM 67a, The random ID set by the microcomputer 79 is held.

The modulation / demodulation circuit 77 is connected to the antenna 10
4. The interrogation signal from the interrogator 29 input via the male connector 102 and the female connector 112 is demodulated and output to the microcomputer 79, and the response signal to the interrogator 29 input from the microcomputer 79 is transmitted wirelessly. The signal is modulated and output to the antenna 104 via the female connector 112 and the male connector 102.

When the transponder main body 110 is mounted on the holder 100, the power supply circuit 78
2 and the male connector 102 is charged by the electric power of the battery 13 of the vehicle 10 supplied from the holder 100 side, and the charged electric power is supplied to the microcomputer 79 in a state where the transponder main body 110 is detached from the holder 100. Supply as

The microcomputer 79 is connected to the transponder main body 11.
By turning on a power switch (not shown) provided at 0, when the transponder main body 110 is not mounted on the holder 100, it operates by the power from the power supply circuit 78.
With the transponder main body 110 mounted on the holder 100, the microcomputer 79 operates the battery 13 supplied from the holder 100 via the female connector 112 and the male connector 102.
It operates with the power of

The liquid crystal display 72 displays an input request message of the holder ID of the holder 100 on which the transponder main body 110 is mounted. The ten keys 73 are operated when inputting the holder ID in response to the input request message of the liquid crystal display 72, and the contents of the operation are displayed on the display 72.

The microcomputer 79 has a CPU (Central Pr
ocessing Unit (central processing unit) 79a and RAM (Ra
ndom Access Memory (79b) and ROM (Read-Only Me)
mory) 79c.

The liquid crystal display 72, numeric keypad 73, female connector 112, reader / writer 76, and modulation / demodulation circuit 77 are connected to the CPU 79a.
The RAM 79b has a data area for storing various data and a work area used for various processing operations.
As shown in the memory area map of FIG. 13, the work area includes areas such as a holder ID confirmation number counter, a toll gate passage number counter, a transponder invalidation flag, and a random ID reset flag. .
The ROM 79c stores a control program for causing the CPU 79a to perform various operations.

Next, the processing performed by the CPU 79a in accordance with the control program stored in the ROM 79c will be described with reference to the flowcharts of FIGS.

When an ignition switch (not shown) (not shown) is turned on, the battery 13 or the power supply circuit 78 is turned on.
Are connected and the microcomputer 79 is started, and the program is started accordingly.
As shown in (1), initialization is performed (step S1).

In this initial setting, the count values I and C of the holder ID confirmation number counter and the toll gate passage number counter of the RAM 79b are reset to zero, respectively, and the areas of the transponder invalidation flag and the random ID reset flag are set. The flags Fa and Fc are each set to “0”.

Next, from the battery 13 to the female connector 112,
Power supply circuit 78 and CPU via male connector 102
It is confirmed whether or not the transponder main body 110 is mounted on the holder 100 based on whether or not electric power is supplied to the power supply 79a (step S3). The transponder main body 110 is the holder 10
If it is not set to 0 (N in step S3), the process proceeds to step S27 described later. If it is set (Y in step S3), it is checked whether an ignition switch (not shown) is turned on. (Step S5).

If the ignition switch is not on (N in step S5), the process returns to step S3, and if it is on (Y in step S5), the transponder invalidation flag Fa is "0". It is confirmed whether or not (step S7). If the transponder invalidation flag Fa is not "0" (N in step S7), a message requesting removal of the transponder main body 110 from the holder 100 is displayed on the liquid crystal display 72 (step S9).
3 and if it is "0" (Y in step S7), it is checked whether the random ID reset flag Fc is "0" (step S11).

The random ID reset flag Fc is "0"
If not (N in step S11), the random IDs written in both the E ² PROMs 67b and 76 of the holder 100 and the transponder main body 110 are reset (erased).
Then, after setting the random ID reset flag Fc to “0” (step S15), the process proceeds to step S33 in FIG. 15 described later.

If the random ID reset flag Fc is "0" (Y in step S11), it is determined whether the random ID has been written to both the E ² PROM 67b of the holder 100 and the E ² PROM 76 of the transponder main body 110. It is confirmed whether or not it is (step S17).

If both random IDs have been written (Y in step S17), the E
^The random ID written in the ² PROM 76 is the random ID written in the E ² PROM 67 b of the holder 100.
D (step S19). If it corresponds (Y in step S19), the process proceeds to step S65 in FIG. 16 described later, and if it does not correspond (step S19).
N at 19), the process proceeds to step S23 described later.

Whether the random ID of the transponder main body 110 corresponds to the random ID of the holder 100 is confirmed as follows. That is, the random ID of the holder 100 is stored in the RAM 79b by the CPU 79a of the microcomputer 79.
Is a random number generated based on the count value C of the toll gate passage counter of the
D represents this random number, which is the random ID of the holder 100,
The vehicle 10 in the vehicle type information read from the NVM 67a
Is a code obtained by dividing by a different polynomial (corresponding to encrypted data and decrypted data) depending on the vehicle type of the vehicle, and a value obtained by multiplying the random ID of the transponder main body 110 by the polynomial is the random ID of the holder 100. If the random number matches the random number, the random ID of the
D is confirmed to correspond, and if they do not match, it is confirmed not to correspond.

[0112] Also, if the random ID is not written to at least one of the E ² PROM 76 of E ² PROM67b and response body 110 of the holder 100 (N) in step S17, the random ID of the holder 100 E ² PROM 67b and E ² PROM of transponder main body 110
It is confirmed whether or not both have been written in 76 (step S21). If both random IDs have not been written (Y in step S21), the process proceeds to step S33 in FIG. 15 described below. If both have been written (N in step S21), step S2
Proceed to 3.

[0113] At step S23, set the transponder invalidation flag Fa to "1", then the response body 110 E ²
After writing the transponder invalidation data to the PROM 76 to invalidate the transponder main body 110 (step S25), the process returns to step S9.

Further, in step S3, when the transponder main body 110 is not mounted on the holder 100 (N), the process proceeds to step S27, where it is confirmed whether or not the transponder invalidation flag Fa is "0". Transponder invalidation flag F
If "a" is "0" (Y in step S27), the process returns to step S3. If "a" is not "0" (N in step S27), the transponder invalidation flag Fa is set to "0" (step S27). S29), and the liquid crystal display 72
Is erased (Step S31), and then Step S3
Return to

After the random ID reset flag Fc is set to “0” in step S15 and in step S33 where the random ID is not written in both the E ² PROMs 67b and 76 in step S21 (Y), the process proceeds to step S33.
As shown in 5, the count value I of the holder ID confirmation number counter is reset to zero. Subsequently, the count value I
Is incremented by "1" (step S35), and a message for requesting input of a holder ID is displayed on the liquid crystal display 72 (step S37).
It is confirmed whether or not there is an input of the holder ID from Step 3 (Step S39).

If there is an input of the holder ID from the ten keys 73 (Y), the process proceeds to step S45 described later. If there is no input (N in step S39), it is confirmed whether or not the ignition switch is turned on. (Step S41). If the ignition switch has not been turned on (N in step S41), the process returns to step S3. If the ignition switch has been turned on (Y in step S41), it is determined whether or not the transponder main body 110 has been removed from the holder 100. (Step S43). If the transponder body 110 has not been removed from the holder 100 (step S4
(N in 3), the process returns to step S37, and if it has been extracted (Y in step S43), the process returns to step S3.

In step S45, when the holder ID is inputted from the ten key 73 in step S39 (Y), in step S45, the inputted holder ID matches the holder ID written in the NVM 67a of the holder 100. It is checked whether or not they match (Y in step S45), the display on the liquid crystal display 72 is erased (step S47), and the process proceeds to step S59 in FIG. 16 described later, and if they do not match (step S45). N), It is confirmed whether or not the count value I of the holder ID confirmation number counter has reached "3" (step S49).

If the count value I of the holder ID check number counter has not reached "3" (N in step S49), a warning message of a holder ID input error is displayed on the liquid crystal display 72 (step S51). Returning to step S35, if it has reached (Y in step S49), the transponder invalidation flag Fa is set to “1” (step S53), and E ² PRO of the transponder main body 110 is set.
The transponder invalidation data is written into M76 to invalidate the transponder main body 110 (step S55), and a message requesting the removal of the transponder main body 110 from the holder 100 is displayed on the liquid crystal display 72 (step S57). , And returns to step S3.

In step S59, which proceeds after the display on the liquid crystal display 72 is erased in step S47, as shown in FIG. 16, the vehicle type information and the holder ID are read from the NVM 67a of the holder 100, and then the read vehicle type information and the holder ID are read. Is written into the E ² PROM 76 of the transponder main body 110 (step S61). Further, a random number is generated based on the count value C of the tollgate passage counter, and the random number is set as the random ID of the holder 100. This random number is stored in a plurality of polynomials of the vehicle type in the control program of the ROM 79c. Of the vehicle 10 indicated by the vehicle type information read from the NVM 67a, the obtained code is divided by a polynomial corresponding to the type of the vehicle 10, and a code obtained thereby is set as a random ID of the transponder main body 110. Both E ² PROMs 67b, 7 of the main body 110
6 is written (step S63), and the process proceeds to step S65.

In step S19, the transponder main body 11
If the random ID of the E ² PROM 76 of 0 corresponds to the random ID of the E ² PROM 67 b of the holder 100 (Y), in step S 63, a step of setting a random ID and writing to both the E ² PROMs 67 b and 76 and then proceeding In S65, it is confirmed whether or not the interrogator 29 has received the interrogation signal.

If the interrogation signal has not been received (N in step S65), the process returns to step S3, and if the interrogation signal has been received (Y in step S65), the sleep mode in which the signal transmission function of transponder main body 110 is suspended. Is canceled (step S67), and the E ² PROM 76 is
After transmitting an information signal including the vehicle type information, the holder ID, and the prepaid amount information, and performing an information signal transmission / reception process of receiving the information signal including the charging information transmitted by the interrogator 29 in response thereto (step (S69), confirm whether or not the confirmation signal from the interrogator 29 has been received (step S7).
1).

When the confirmation signal has not been received (N in step S71), step S71 is repeated until the confirmation signal is received, and when the confirmation signal has been received (Y in step S71), the count value C of the toll gate passage counter is set to ""1" is incremented (step S73), and both E ² PR of the holder 100 and the transponder main body 110 are assigned to a random ID set from a random number based on the count value C of the toll gate passage counter.
The random IDs held by the OMs 67b and 76 are updated (step S75), and after entering the sleep mode for suspending the signal transmission function of the transponder main body 110 (step S7).
7), and return to step S3.

As is clear from the above description, in the present embodiment, the transponder-side vehicle type information setting means A, the transponder-side vehicle type information generating means F, and the encrypting means H in the claims correspond to FIG.
6 is constituted by steps S63 and S75 in the flowchart of FIG.
The vehicle type information updating means S is configured in step S75 in FIG.

Further, in the present embodiment, the change detecting means T in the claims is configured to execute the steps S71 and S71 in FIG.
The vehicle-side vehicle type information holding means 67bA is constituted by the NVM 67a of the holder 100, and the encrypted data holding means G and the decrypted data holding means J are constituted by the ROM 79c of the microcomputer 79.

Next, the operation (operation) of the transponder unit 90 according to the first embodiment having the above-described configuration will be described.
First, in using the transponder unit 90, when the transponder main body 110 is mounted on the holder 100, there is no change in the state while the ignition switch is off, and when the ignition switch is turned on, the state at that time is changed. A different operation is performed according to.

First, when the transponder main body 110 attached to the holder 100 is invalidated, a message requesting the removal of the transponder main body 110 is displayed on the liquid crystal display 72 of the transponder main body 110. When the 110 is removed from the holder 100, the removal request message of the liquid crystal display 72 is deleted.

In addition, the transponder main body 11 that has not been invalidated
0 is attached to the holder 100, the E of the holder 100
² PROM 67b and E ² PROM 7 of transponder main body 110
6 when the random ID is written in only one of them, and when the random ID is written in both E ² PROMs 67b and 76 but the two random IDs do not correspond to each other,
0 is invalidated. Then, the extraction request message from the holder 100 is continuously displayed on the liquid crystal display 72 of the transponder main body 110. When the invalidated transponder main body 110 is extracted from the holder 100, the extraction request message is deleted.

The transponder main body 11 not invalidated
0 when it is attached to the holder 100, the holder 100 E ²
PROM 67b and E ² PROM 76 of transponder main body 110
When a random ID is not written in either of them, a message requesting input of the holder ID is displayed on the liquid crystal display 72 of the transponder main body 110. This message is displayed until the holder ID is input by the ten keys 73. For a while.

In response to the holder ID input request message, if an erroneous holder ID is input using the numeric keypad 73, the display on the liquid crystal display 72 once changes to a message warning of an error, and then the input of the holder ID is performed. Return to the requested message again.

Subsequently, when an incorrect holder ID is input once again, the same operation is repeated, and then again, that is, when an incorrect holder ID is input three consecutive times, the transponder main body attached to the holder 100 is input. 110 is invalidated, and the display on the liquid crystal display 72 is
The message changes to a message requesting that the responder 10 be removed from the holder 100.
When it is actually extracted from 0, the display on the liquid crystal display 72 disappears.

If the correct holder ID is input by the ten keys 73 up to three times, the liquid crystal display 72
Of the holder ID input request message disappears, and then the NVM is
The vehicle type information of the vehicle 10 stored in 67a is written to the E ² PROM 76 of the transponder main body 110. And
Vehicle type information of the vehicle 10 stored in the NVM 67a;
The random ID of the holder 100 and the transponder main body 110 is obtained from a random number generated by the microcomputer 79 and generated based on the number of times of passing through the tollgate held in the RAM 79b.
Are respectively set, and these random IDs are stored in the corresponding E ² PROMs 6 of the holder 100 and the transponder main body 110.
7b and 76 respectively.

In this state, the vehicle 10 is connected to the tollgate on the toll road.
Vehicle passing through the gate 21 of 20 and passing the vehicle detector 25
When both 10 and its vehicle type are detected, the question on lane 21
The interrogation signal is transmitted wirelessly from the
The transponder unit 90 received at 104 stops the transmission function.
Release the sleep mode in which the
Then, the mode shifts to the active mode in which transmission and reception are possible. Continued
Read from the NVM 67a of the holder 100 and respond
E of answering machine body 110 ^Two E stored in the PROM 76
When a response signal including the
Sent to interrogator 29 by line.

Then, the tollgate host 30 checks whether or not the holder ID from the transponder unit 90 is on the blacklist. If not, the ID is transmitted from the interrogator 29 as an information signal. The transponder unit 90 which has received this transmits the electronic cash information and the payer information read out from the E ² PROM 76 to the interrogator 29 as an information signal together with information on the payment method as to whether or not to make a post-payment.

In response, the interrogator 29 transmits information signals such as the date and time, the vehicle type detected by the vehicle type detector 25, the toll, and the method of collecting tolls, and sends them to the transponder unit 9.
If 0 is received, whether there is an error in the received content,
That is, it is confirmed whether a literal data error or the vehicle type information of the vehicle 10 stored in the NVM 67a matches the vehicle type detected by the vehicle type detector 25 from the interrogator 29.

As a result, if there is no error in the information signal from the interrogator 29, the information of the balance such as electronic cash after the deduction of the toll notified from the interrogator 29 is sent to the interrogator 29 as a settlement confirmation information signal. When the interrogator 29 transmits the confirmation signal and receives the confirmation signal in response to the transmission, the toll collection or the payment reservation is made afterwards.

When the confirmation signal is received from the interrogator 29, the total number of times of passing through the tollgate 20 counting the current time counted in the RAM 79b and E ² A random number generated based on the vehicle type information in the PROM 76
0 and a random ID of the transponder main body 110 are respectively newly set, and these random IDs are stored in the corresponding E ² PROMs 67 b and 7 of the holder 100 and the transponder main body 110.
6 is written in place of the currently written random ID, and the random ID is updated.

Thereafter, when the delay time has passed since the reception of the confirmation signal from the interrogator 29, the transponder unit 90 changes from the active mode in which transmission and reception can be performed to the sleep mode in which the transmission function is stopped and the reception standby state is set. Transition.

[0138] As described above, after the toll is collected and the payment is made after passing through the toll booth 20, or
If the random ID has been set in the holder 100 and the transponder main body 110, respectively, the same applies even before the toll collection accompanying the passage of the tollgate 20 is performed.
When extracting the response body 110 from the holder 100, then when the response body 110 was again mounted on the holder 100, a random ID written in E ² PROM 76 of the response body 110, E ² PROM of the holder 100
A check is made to see if it corresponds to the random ID written in 67b.

If the two random IDs do not match, as described above, the transponder main body 110 is invalidated, and the liquid crystal display 72 of the transponder main body 110 is displayed on the liquid crystal display 72 of the transponder main body 110. A message requesting removal from the holder 100 is displayed. After that, when the transponder main body 110 is removed from the holder 100, the display on the liquid crystal display 72 disappears.

As described above, the transponder unit 9 of this embodiment is
According to No. 0, the transponder unit 90 has an NVM 67 a in which the vehicle type information is held in a non-rewritable manner, and is detachably mounted on the holder 100 fixed to the dashboard 18 of the vehicle 10 and the holder 110. The E ² PROM 67 of the holder 100 is separated from the transponder main body 110 so that only the transponder main body 110 can be taken out of the vehicle by itself.
b and the E ² PROM 76 for rewriting the prepaid amount information of the transponder main body 110 in a rewritable manner. When the transponder main body 110 once removed from the holder 100 is remounted, the random ID for mutual authentication is stored. Then, the microcomputer 79 of the transponder main body 110 checks whether or not both random IDs correspond to each other.

For this reason, even if the transponder main body 110 is taken out of the vehicle 10 in a state where the vehicle type information different depending on the type of the vehicle 10 is written in the E ² PROM 76, it cannot be used in another vehicle. Unauthorized use due to conversion to 10 can be prevented.

In addition, the random ID used for authentication of the transponder main body 110 with respect to the holder 100 is read from the NVM 67a of the holder 100 and the E ² P of the transponder main body 110 is read.
Since it is determined from the random number generated based on the vehicle type of the vehicle 10 written in the ROM 76, the random ID which is different from the random ID of the transponder main body 110 mounted on the vehicle 10 having the different vehicle type is surely provided. Can surely prevent the transponder main body 110 from being diverted between different vehicles, and can prevent an improper toll settlement process at a lower price than a regular toll.

Next, a transponder unit employing the authentication device according to the second embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to FIG.

FIG. 17 is a block diagram showing an electrical schematic configuration of the transponder unit according to the second embodiment. The transponder unit of the second embodiment indicated by reference numeral 90A in FIG. It has a holder 100A fixed to the upper surface 18a of 18 and a transponder main body 110A detachably attached to the holder 100A.

The holder 100A has an E ² PROM 67
The point that “b” is omitted is different from the holder 100 of the first embodiment in configuration.
The microcomputer 80 is different from the microcomputer 79 of the first embodiment. Further, the holder 100A and the transponder main body 11
0A, the male connector 102 and the female connector 112 for connecting the two are connected to the E ² PRO of the holder 100A.
The configuration is different from the transponder unit 90 of the first embodiment in that a terminal for connecting the M67b to the CPU 80a of the microcomputer 80 is omitted, and the other point is that the transponder unit of the first embodiment is different. It is configured similarly to 90.

The microcomputer 80 includes a CPU 80a,
It comprises an AM 80b and a ROM 80c.

The CPU 80a includes the liquid crystal display 72, numeric keypad 73, female connector 112, E ² PR
The OM 76 and the modulation / demodulation circuit 77 are connected.
The RAM 80b has a data area for storing various data and a work area used for various processing operations.
As shown in the memory area map in FIG. 18, the work area includes a holder ID confirmation counter, a toll gate passage counter, a transponder invalidation flag, a holder ID confirmed flag, and a random ID reset flag. Etc. are provided. The ROM 80c has a CP
A control program for causing the U80a to perform various operations is stored.

Next, the processing performed by the CPU 80a according to the control program stored in the ROM 80c will be described with reference to the flowcharts of FIGS.

When an ignition switch (not shown) (not shown) is turned on, the battery 13 or the power supply circuit 78 is turned on.
Are connected and the microcomputer 80 is started, and the program is started accordingly.
As shown in (1), initialization is performed (step SA1).

In this initial setting, the count values I and C of the holder ID confirmation number counter and the toll gate passage number counter of the RAM 80b are reset to zero, respectively, and the transponder invalidation flag, the holder ID confirmation completion flag, and the random number Flags Fa and F of each area of the ID reset flag
b and Fc are each set to “0”.

Next, from the battery 13 to the female connector 112,
Power supply circuit 78 and CPU via male connector 102
It is confirmed whether or not the transponder main body 110A is mounted on the holder 100A based on whether or not electric power is supplied to 80a (step SA3). If the transponder main body 110A is not mounted on the holder 100A (step SA
(N in 3), the process proceeds to step SA19 to be described later, and if it is attached (Y in step SA3), it is confirmed whether or not an ignition switch (not shown) is turned on (step SA5).

If the ignition switch is not on (N in step SA5), the process returns to step SA3, and if the ignition switch is on (Y in step SA5),
It is determined whether or not the transponder invalidation flag Fa is “0” (step SA7). If the transponder invalidation flag Fa is not "0" (N in step SA7), a message for requesting removal of the transponder main body 110A from the holder 100A is displayed on the liquid crystal display 72 (step SA9), and the process returns to step SA3. If it is "0" (Y in step SA7), it is checked whether the random ID reset flag Fc is "0" (step SA11).

The random ID reset flag Fc is "0"
If not (N in step SA11), the holder 100
A and both E ² PROMs 67b and 76 of the transponder main body 110A
Is reset (erased) (step SA13), and then the random ID
After setting the reset flag Fc to “0” (step S
A15), and the process proceeds to Step SA29 in FIG. 20 described later.

If the random ID reset flag Fc is "0" (Y in step SA11), it is checked whether a random ID has been written in the EEPROM ^{2 of the} transponder main body 100A (step SA17). .

If the random ID has been written (Y in step SA17), the process proceeds to step SA63 in FIG. 21 described later, and if not (N in step SA17), the process proceeds to step SA29.

In step SA3, when the transponder main body 110A is not mounted on the holder 100A (N), the process proceeds to step SA19 where it is confirmed whether or not the transponder invalidation flag Fa is "0". If the transponder invalidation flag Fa is “0” (Y in step SA19), the process proceeds to step SA25 described below. If the transponder invalidation flag Fa is not “0” (N in step SA19), the transponder invalidation flag Fa is set to “0”. (Step SA21), and
After erasing the display on the liquid crystal display 72 (step S
A23), and the process proceeds to Step SA25.

At Step SA19, the transponder invalidation flag F is set.
If “a” is “0” (Y), and in step SA25 to which the display of the liquid crystal display 72 is erased in step SA23, whether or not the holder ID confirmed flag Fb is “0” is checked. 0 ”(step S
(A at Y25), the process returns to step SA3, and if not “0” (N at step SA25), the holder ID confirmed flag Fb is set to “0” (step SA2).
7), returning to step SA3.

After the random ID reset flag Fc is set to “0” in step SA15,
The random I is stored in the E ² PROM 76 of the transponder main body 100A.
Step SA to proceed to (N) if D is not written
At 29, as shown in FIG. 20, the count value I of the holder ID confirmation number counter is reset to zero. Subsequently, the count value I is incremented by "1" (step S1).
A31) Further, after displaying the input request message of the holder ID on the liquid crystal display 72 (step SA3)
3) Check whether there is an input of the holder ID from the ten keys 73 (step SA35).

If the holder ID has been input from the ten key 73 (Y), the flow advances to step SA41 to be described later.
If there is no input (N in step SA35), it is confirmed whether or not the ignition switch is on (step SA37). If the ignition switch is not turned on (N in step SA37), step SA3
And if it is on (step SA37)
Y), it is confirmed whether or not the transponder main body 110A has been removed from the holder 100A (step SA39). If the transponder main body 110A has not been removed from the holder 100A (N in step SA39), step SA33 is executed.
And if it has been extracted (step SA
At 39, Y), the process returns to step SA3.

In step SA41, in which the holder ID is inputted from the ten key 73 in step SA35 (Y), in step SA41, the inputted holder ID is
It is checked whether or not the ID matches the holder ID written in the NVM 67a of 0A.
After the display on the liquid crystal display 72 has been erased (step SA43), step SA of FIG.
If it does not match (N in step SA41), it is checked whether the count value I of the holder ID check number counter has reached "3" (step SA4).
5).

If the count value I of the holder ID confirmation number counter has not reached "3" (N in step SA45), a warning message of a holder ID input error is displayed on the liquid crystal display 72 (step SA47). Returning to step SA31, if it has reached (Y in step SA45), the transponder invalidation flag Fa is set to "1".
(Step SA49), and writes the transponder invalidation data into the EEPROM ^{2 of the} transponder main body 110A to invalidate the transponder main body 110A (step S49).
A51) After displaying a message requesting removal of the holder 100A of the transponder main body 110A on the liquid crystal display 72 (step SA53), the process returns to step SA3.

At step SA43, the liquid crystal display 72
In step SA55, which proceeds after deleting the display of FIG.
As shown in FIG. 1, the vehicle type information and the holder ID are read from the NVM 67a of the holder 100A, and then the read vehicle type information and the holder ID are stored in the E ² PROM of the transponder main body 110A.
76 (step SA57).

Further, a random number is generated based on the count value C of the toll gate passage counter of the RAM 80b, and the random number is read from the NVM 67a among a plurality of polynomials of the vehicle type in the control program of the ROM 80c. Dividing by the polynomial according to the type of the vehicle 10 indicated by the information,
The code thus obtained is used as the random I of the transponder main body 110A.
D and set this random ID to the transponder main body 110.
A is written into the E ² PROM 76 of A (step SA5).
9) After setting the holder ID confirmed flag Fb to “1” (step SA61), the process proceeds to step SA63.

At step SA17, the transponder main body 1
When the random ID is written in the E ² PROM 76 of 00A (Y), and in step SA63 in which the holder ID confirmed flag Fb is set to “1” in step SA61, the interrogation signal from the interrogator 29 is transmitted. Check whether it has been received.

If the interrogation signal has not been received (N in step SA63), the process returns to step SA3, and if the interrogation signal has been received (Y in step SA63), the responder body 11
The sleep mode in which the signal transmission function of 0A is suspended is released (step SA65), and E ² P is sent to the interrogator 29.
After transmitting an information signal or the like including the vehicle type information, the holder ID, and the prepaid amount information of the ROM 76, or performing an information signal transmission / reception process of receiving an information signal or the like including the billing information transmitted by the interrogator 29 ( (Step SA67), it is confirmed whether or not the holder ID confirmed flag Fb is “0” (step SA69).

If the holder ID confirmed flag Fb is not "0" (N in step SA69), the flow advances to step SA79 to be described later, and if "0" (step SA6).
9) Y), the content of the random ID in the E ² PROM 76 of the transponder main body 110A corresponds to the vehicle type detected by the vehicle type detector 25 of each gate 21 indicated by the vehicle type information included in the information signal from the interrogator 29. It is confirmed whether or not to perform (step SA71).

Here, the random ID of the E ² PROM 76
Corresponds to the vehicle type in the information signal from the interrogator 29, is confirmed as follows. That is, E ² PROM
When obtaining the random ID of 76, the vehicle type corresponding to the polynomial of the vehicle type used to divide the random number generated based on the count value C of the toll gate passage counter and the information signal from the interrogator 29 If the vehicle type matches, the transponder main body 110A
Is confirmed to correspond to the vehicle type in the information signal from the interrogator 29, and if they do not match, it is confirmed that they do not correspond.

Then, the random I of the transponder main body 110A is
If D corresponds to the vehicle type in the information signal from the interrogator 29 (Y in step SA71), the process proceeds to step SA79; otherwise (N in step SA71), the transponder invalidation flag Fa is set to "1". (Step SA7)
3) The transponder invalidation data is written into the E ² PROM 76 of the transponder main body 110 to invalidate the transponder main body 110 (step SA75), and a request message for extracting the transponder main body 110 from the holder 100 is displayed on the liquid crystal display. After the display at step 72 (step SA77), the process returns to step SA3.

If the holder ID confirmed flag Fb is not "0" at step SA69 (NO), the random ID of the transponder main body 110A corresponds to the vehicle type in the information signal from the interrogator 29 at step SA71. In step SA79 proceeding to case (Y), it is confirmed whether or not a confirmation signal from interrogator 29 has been received. If not (N in step SA79), step SA79 is repeated until it is received.

On the other hand, when the confirmation signal is received from the interrogator 29 (Y in step SA79), the count value C of the toll gate pass counter is incremented by "1" (step SA81), and the toll gate pass count is calculated. A random ID set from a random number based on the count value C of the counter,
Both E ² PROM of holder 100A and transponder main body 110A
After updating the random IDs held by 67b and 76 (step SA83), and entering a sleep mode for suspending the signal transmission function of transponder main body 110A (step SA8)
5) Return to step SA3.

As is clear from the above description, in this embodiment, the transponder-side vehicle type information setting means A, the transponder-side vehicle type information generating means F, and the encrypting means H in the claims correspond to FIG.
21. The second determination means N and the decryption means K are configured by step SA71 in FIG. 21, and the vehicle type information updating means S is configured by step SA8 in FIG.
3.

In the present embodiment, the change detecting means T in the claims is constituted by steps SA79 and SA81 in FIG. 21 and the vehicle type information storing means 67bA.
Are constituted by the NVM 67a of the holder 100A, and the encrypted data holding means G and the decrypted data holding means J are constituted by the ROM 80c of the microcomputer 80.

Next, the operation (action) of the transponder unit 90A according to the second embodiment having the above-described configuration will be described. First, in using the transponder unit 90A, when the transponder main body 110A is mounted on the holder 100A, there is no change in the state while the ignition switch is off, and when the ignition switch is turned on,
Different operations are performed depending on the state at that time.

First, if the transponder main body 110A attached to the holder 100A is invalidated, the transponder main body 110A
A message requesting removal of the transponder main body 110A is displayed on the liquid crystal display 72. When the transponder main body 110A is removed from the holder 100A, the removal request message of the liquid crystal display 72 is deleted.

The transponder main body 11 that has not been invalidated
0A is mounted on the holder 100A, the transponder body 1
When the random ID is not written in the E ² PROM 76 of the 10A, a message requesting the input of the holder ID is displayed on the liquid crystal display 72 of the transponder main body 110A. Until the display is continued.

In response to the holder ID input request message, when an erroneous holder ID is input using the numeric keypad 73, the display on the liquid crystal display 72 once changes to a message warning of an error, and then the input of the holder ID is performed. Return to the requested message again.

Subsequently, when an incorrect holder ID is input once again, the same operation is repeated, and then again, that is, when an incorrect holder ID is input three consecutive times, the transponder main body attached to the holder 100A is input. 110A is invalidated, the display on the liquid crystal display 72 changes to a message requesting that the transponder main body 110A be removed from the holder 100A, and then, when the transponder main body 110A is actually removed from the holder 100A, the display on the liquid crystal display 72 is displayed. Disappears.

If the correct holder ID is input by the ten keys 73 up to three times, the liquid crystal display 72
Of the holder ID input request message disappears. Then, the microcomputer 80 of the transponder main body 110A displays the NV
The vehicle type information of the vehicle 10 stored in M67a is written in the E ² PROM 76 of the transponder main body 110A. Then, based on the vehicle type information of the vehicle 10 stored in the NVM 67a and the random number generated based on the number of times of passing through the tollgate counted by the microcomputer 80 and held in the RAM 80b, the random ID of the transponder main body 110A is obtained. This random ID is set to the E ² PR of the transponder main body 110A.
Written to OM76.

In this way, when the random ID is E ² PR
After the transponder main body 110A written in the OM 76 is attached to the holder 100A, or the random ID is E ²
Responder body 110A not written in PROM 76
Is mounted on the holder 100A, the random ID is written into the E ² PROM 76 after the mounting by checking the holder ID, and then the vehicle 10 is moved to the gate 21 of the tollgate 20 on the toll road.
And the vehicle detector 25 detects the passing vehicle 10 and its vehicle type, the following operation is performed.

First, the interrogator 29 on the lane 21 wirelessly transmits an interrogation signal, and the transponder unit 90A, which has received the interrogation signal by the antenna 104, stops the transmission function and sets the sleep mode in a reception standby state. Release and shift to the active mode in which transmission and reception are possible. Subsequently, the transponder main body 1 is read from the NVM 67a of the holder 100A and is read.
Holder ID stored in 10A E ² PROM 76
Is transmitted from the transponder unit 90A to the interrogator 29 wirelessly.

Then, it is confirmed in the tollgate host 30 whether or not the holder ID from the transponder unit 90A is not on the blacklist.
The ID is transmitted as an information signal from the interrogator 29, and the transponder unit 90A receiving the ID transmits the ID to the E ² PROM 7
The electronic cash information and the payer information read from 6 are transmitted to the interrogator 29 as an information signal together with information on a payment method as to whether or not to pay later.

In response, the interrogator 29 transmits information signals such as the date and time, the vehicle type detected by the vehicle type detector 25, the toll, and the toll collection method. Whether there is an error in the
It is confirmed whether a literal data error or the vehicle type information of the vehicle 10 stored in the NVM 67a matches the vehicle type detected by the vehicle type detector 25 from the interrogator 29.

The random ID is stored in the E ² PROM 76.
Is written in the transponder main body 110A and the holder 10
When attached to 0A, in addition to confirmation of the presence or absence of an error in the information signal from the interrogator 29 described above, E ² PROM
The vehicle type indicated by the vehicle type information held by 76 and the interrogator 29
It is checked whether the vehicle type detected by the vehicle type detector 25 matches the vehicle type.

As a result, if the vehicle type in the E ² PROM 76 does not match the vehicle type detected by the vehicle type detector 25 from the interrogator 29, regardless of whether there is an error in the information signal from the interrogator 29 or not. , The transponder main body 110A attached to the holder 100A is invalidated, a message requesting extraction from the holder 100A is continuously displayed on the liquid crystal display 72 of the transponder main body 110A, and the invalidated transponder main body 110A is displayed. From the holder 100A,
The extraction request message is deleted.

On the other hand, the vehicle type of the E ² PROM 76 and the interrogator 2
9 matches the vehicle type detected by the vehicle type detector 25 and if there is no error in the information signal from the interrogator 29,
The interrogator 2 uses the information of the balance such as electronic cash after the deduction of the toll notified from the interrogator 29 as a settlement confirmation information signal.
9, the interrogator 29 transmits a confirmation signal in response to this, and when the interrogator 29 receives the confirmation signal, a formal toll is collected or a payment reservation is made thereafter.

After the holder is attached to the holder 100A, the E ² PROM of the transponder main body 110A is checked after confirming the holder ID.
When the random ID is written in 76, the interrogator 2
If there is no error in the information signal from 9, the information of the balance such as electronic cash after the deduction of the toll notified from the interrogator 29 is transmitted to the interrogator 29 as a settlement confirmation information signal,
In response to this, when the interrogator 29 transmits and receives a confirmation signal, a toll is collected or a payment reservation is made thereafter.

When the confirmation signal is received from the interrogator 29, the total number of times of passing through the tollgate 20 counted in the RAM 80b and taking into account the current time, and E ² A random ID of the transponder main body 110A is newly set by a random number generated based on the vehicle type information of the PROM 76, and this random ID is replaced with the random ID currently written in the E ² PROM 76 of the transponder main body 110A. And the random ID is updated.

After that, when the delay time has passed since the reception of the confirmation signal from the interrogator 29, the transponder unit 90A changes from the active mode in which transmission and reception can be performed to the sleep mode in which the transmission function is stopped and the reception standby state is set. Transition.

[0189] As described above, after the toll collection accompanying the passage of the tollgate 20 and the subsequent payment reservation are made, or
If the random ID is set in the transponder main body 110A, the same applies even before the toll collection accompanying the passage of the toll booth 20 is performed. However, if the transponder main body 110A is removed from the holder 100A, After the transponder main body 110A is attached to the holder 100A again, the random ID written in the E ² PROM 76 of the transponder main body 110A is:
A confirmation is made as to whether the vehicle corresponds to the vehicle type detected by the vehicle type detector 25 in the information signal from the interrogator 29 received as the vehicle passes through the tollgate 20.

Here, the random I of the transponder main body 110A is
If D does not correspond to the vehicle type detected by the vehicle type detector 25, as described above, the transponder main body 110A is invalidated, and the transponder main body 110A is displayed on the liquid crystal display 72 of the transponder main body 110A. Is displayed, a message requesting that the liquid crystal display 72 be removed from the holder 100A is displayed. Thereafter, when the transponder main body 110A is removed from the holder 100A, the display on the liquid crystal display 72 disappears.

As described above, the transponder unit 9 of the present embodiment is
According to 0A, a transponder unit 90A is fixed to a dashboard 18 of the vehicle 10 by a holder 100A and a transponder main body 110 detachably mounted to the holder 110.
An E ² PROM that is configured so that only the transponder main body 110A can be taken out of the vehicle by itself and that the prepaid amount information of the transponder main body 110A is rewritable.
76 holds a random ID for authentication with the holder 100A, and temporarily removes the transponder main body 1 from the holder 100A.
When the 10A is reattached, whether or not both random IDs of the transponder main body 110A correspond to the vehicle type detected by the vehicle type detector 25 in the information signal from the interrogator 29 received as the vehicle passes through the tollgate 20 In the microcomputer 80 of the transponder main body 110A.

With the transponder unit 90A of the second embodiment having such a configuration, the same effect as the transponder unit 90 of the first embodiment can be obtained. Moreover,
According to the transponder unit 90A of the second embodiment, the holder 100A has E ² P like the holder 100 of the first embodiment.
Since the ROM 67b and the configuration for writing the random ID of the vehicle side to the ROM 67b and reading it out for collation with the random ID of the transponder main body 110A are not required, the holder 100A and the transponder main body 110A are unnecessary. Can be realized with a configuration that is less expensive than the transponder unit 90 of the first embodiment.

It should be noted that the random IDs employed in the transponder units 90 and 90A of the first and second embodiments described above.
The configuration for updating D may be omitted, but if this configuration is adopted, random ID leakage due to analysis from outside the transponder units 90, 90A and transponder main units 110, 110A of other vehicles using the same will be described. This is advantageous because it is possible to make it more difficult to use illegally.

When the random ID is updated, the cycle is not limited to every time the vehicle 10 passes through the toll booth 20 as in the case of the transponder units 90 and 90A of the first and second embodiments. This is optional, such as every time the operating time of the transponder units 90 and 90A increases for a predetermined time, or every time the total integration time of the active mode increases for a predetermined time.

In the transponder units 90 and 90A of the first and second embodiments, the NV of the holders 100 and 100A
A configuration in which a random ID is obtained from a random number generated based on the vehicle type of the vehicle 10 obtained from the vehicle type information of M67a,
The form was a random ID for each vehicle type.

However, the random ID of the holders 100 and 100A and the interrogator 29
The vehicle type detected by the vehicle type detector 25 in the information signal from the vehicle, or vehicle type information including the detected vehicle type, and the transponder main body 11
For example, the random IDs of the holders 100 and 100A are encrypted and the random IDs of the holders 100 and 100A are used as the random IDs of the responder main bodies 110 and 110A.
D, and decrypts the random IDs of the transponder main bodies 110 and 110A upon collation, and then
The random ID may be determined by a random number generated by incorporating the information identifying each vehicle 10 as long as the random ID or the like is adopted.

In this case, for example, the transponder unit 90 of the first embodiment will be described.
The holder ID written in the VM 67a can be used for authentication with the transponder main body 110, and the operation of the microcomputer 79 of the first embodiment is performed by using the holder ID and the transponder main body with a random ID based on the holder ID. Considering the case where the authentication with 110 is performed, all means in the claims are configured as follows, assuming that "vehicle type information" is all replaced with "holder ID".

That is, the transponder-side specific information setting means W, the transponder-side vehicle type information generating means F, and the second encrypting means V in the claims correspond to step S in the flowchart of FIG.
63 and step S75, the third determining means Y and the second decoding means X are configured in step S19 in the flowchart of FIG. 14, and the specific information updating means Z
This is configured in step S75 in FIG.

Further, the change detecting means T in the claims is the same as that shown in FIG.
6 is composed of step S71 and step S73,
The vehicle-side specific information holding means 67bB is the NV of the holder 100.
The encrypted data holding means G and the decrypted data holding means J are constituted by the ROM 79c of the microcomputer 79.

Also, as in the first embodiment, the holder 10
When a random ID is set to both 0 and the transponder main body 110, in order to make the random ID of the transponder main body 100 different from the random ID of the holder 100, contrary to the first embodiment, The random ID before encryption may be set as the random ID of the transponder main body 110, and the random ID after encryption may be set as the random ID of the holder 100.

Furthermore, a configuration in which one random ID is encrypted with the other random ID and the two contents are not the same may be omitted. However, similar to the configuration in which the random ID is updated, this configuration is used. Adopting this method is advantageous because it makes it more difficult to leak the random ID by analysis from the outside of the transponder unit 90 and to use the transponder main body 110 of another vehicle illegally by using the random ID.

In the transponder units 90 and 90A of the first and second embodiments described above, the holders 100 and 100A are used.
A, a random ID on the holder 100 side determined according to the vehicle type information indicated by the vehicle type information, and the transponder main body 110,
The random ID of 110A is stored in the E ² PROMs 67b and 76.
Although the configuration is such that writing and reading are performed as they are, the location where writing and reading may be changed according to the vehicle type. Hereinafter, a specific example will be described.

FIG. 22 shows the transponder bodies 110, 110 in the transponder units 90, 90A of the first and second embodiments.
A random I of the transponder unit according to the third embodiment of the present invention which can be used in place of the E ² PROM 76 of FIG.
FIG. 22 is a block diagram showing a schematic configuration of a storage unit for holding D, and includes three E ² PROs indicated by reference numerals 76a to 76c in FIG.
M is the CPU 79a (80a) of the microcomputer 79 (80)
And these E ² PROMs 76a
To 76c are random I of the transponder main bodies 110 and 110A.
D is dispersed and held according to the vehicle type.

This will be described in detail.
Here, the random ID of 0,110A is different depending on the six types of vehicles such as emergency vehicles, special vehicles, large vehicles, medium vehicles, small vehicles, and motorcycles, and is represented by 2 bits × 3 digits data. Is set.

Specifically, for example, the random ID of the emergency vehicle is “111”, and the random ID of the special vehicle is “1”.
The random ID of a large car is set to "101", the random ID of a medium-sized car is set to "011", the random ID of a small car is set to "100", and the random ID of a motorcycle is set to "010". ² PROMs 76a to 76
c is configured to individually hold the data of the first, second, and third digits from the beginning.

Therefore, when the above-described configuration is applied to the transponder unit 90 of the first embodiment, the transponder main unit 11
When a random ID of 0 is recorded or updated, the holder 10 written in the E ² PROM 67b of the holder 100
If the vehicle type of the vehicle 10 indicated by the vehicle type information of the NVM 67a of 0 is a large vehicle, the CPU 79a of the microcomputer 79 uses the E ² PROM as a random ID of the transponder main body 110.
Respectively and 76a and E ² PROM76c data of "1" is written.

On the other hand, the responder body 1 is attached to the holder 100.
10 is mounted, the E ² PROMs 76a to 76
If data has been written into at least one of the folders c, the CPU 79a of the microcomputer 79
Corresponding to large vehicles is a vehicle type 10 showing vehicle type information NVM67a, E ² PROM76a and E ² PROM
76c and the data is read.

Therefore, if the host vehicle is a small vehicle and the data of "1" is written only in the E ² PROM 76a corresponding to the small vehicle, the transponder main body 110 of the host vehicle is placed in the holder 1
00 and then re-attached,
U79a is generated based on the vehicle type information of the NVM 67a and corresponds to the vehicle type = small vehicle indicated by the random ID “100” written in the E ² PROM 67b of the holder 100.
Data is read only from the E ² PROM 76a.

The resulting random ID of the transponder main body 110 is “100”, which matches the random ID “100” of the holder 100. Therefore, the CPU 79a determines that both random IDs correspond to each other. Become.

Similarly, when the above-described configuration is applied to the transponder unit 90A of the second embodiment, the transponder body 1
When the random ID of 10A is recorded or updated, if the vehicle type of the vehicle 10 indicated by the vehicle type information of the NVM 67a of the holder 100A written in the E ² PROM 67b of the holder 100A is a small vehicle, the random ID of the transponder main body 110A as, the CPU80a microcomputer 80, E ²
Data "1" is written only to the PROM 76a.

On the other hand, when the transponder main body 110 is mounted on the holder 100A, if data has been written in at least one of the E ² PROMs 76a to 76c, it follows the interrogation signal from the interrogator 29 thereafter. At the time when the information signal is received, the E ² PRO corresponding to the small vehicle which is the vehicle type of the vehicle 10 detected by the vehicle type detector 25 in the information signal.
Data is read only from M76a.

Therefore, if it is used in a motorcycle,
The other vehicle response body 110A in which the data is written in the "1" only E ² PROM76b corresponding to motorcycles, and attached to the vehicle of the holder 100A which is a small car, CPU 80a of the microcomputer 80, from the interrogator 29 When an information signal subsequent to the interrogation signal is received, data is read only from the E ² PROM 76a corresponding to the type of the vehicle 10 detected by the vehicle type detector 25 in the information signal = small vehicle.

The resulting random ID of the transponder main body 110 is “000”, which does not match the random ID “100” of the holder 100.
It is determined that the two random IDs do not correspond.

According to the third embodiment, the same effects as those of the transponder units 90 and 90A of the first and second embodiments can be obtained.
00, 100A random ID and transponder main body 110, 1
By avoiding the occurrence of a correspondence relationship with the random ID of 10A, it is possible to reliably prevent unauthorized use of the transponders of vehicles of different types of vehicles, which are settled at a lower price than the original toll.

Note that the configuration of the third embodiment described above is different from that of the first embodiment.
Holder 100 in transponder unit 90 of embodiment
Storage means for holding a random ID of E ² PR
It is also possible to apply as a substitute for the OM 67b.

Then, the configuration of the third embodiment described above is replaced with the holder 100 in the transponder unit 90 of the first embodiment.
In the case where the access means C is used in place of the E ² PROMs 67b and 76 of the transponder body 110,
And the storage means a to n are stored in the E ² PROM 76.
a to 76c.

Also, the configuration of the third embodiment described above is
Transponder main body 1 in transponder unit 90A of the embodiment
In the case where the third access means P is used in place of the E ² PROM 76 of FIG.
Storage means a to n
Are composed of E ² PROMs 76a to 76c.

FIG. 23 shows the transponder main body 11 in the transponder units 90 and 90A of the first and second embodiments.
23 is a block diagram showing a schematic configuration of a storage means for holding a random ID of the transponder unit according to the fourth embodiment of the present invention, which can be used in place of the E ² PROM 76 of 0,110A. E ² PROM indicated by
Is connected to the CPU 79a (80a) of the microcomputer 79 (80), and the E ² PROM 76g has the same transponder main bodies 110, 1 having different contents for each vehicle model as in the third embodiment.
The random ID of 10A is held at different address locations depending on the vehicle type.

[0219] In detail this, the E ² PROM76
g is the random ID of the transponder bodies 110 and 110A.
Here, the emergency car has the address "0", the special car has the address "10", the large car has the address "20", the medium car has the address "30", and the small car has the address "40".
Numbers and motorcycles are numbered "50",
It is stored at a different address for each vehicle type.

Also in the fourth embodiment configured as described above, the transponder body 110 of another vehicle having a vehicle type different from that of the own vehicle is used.
When 110A is mounted on holders 100 and 100A, the address location of E ² PROM 76g corresponding to the vehicle type of vehicle 10 indicated by the vehicle type information of NVM 67a of holder 100A,
When the information signal from the interrogator 29 is received, the random ID read from the address portion of the E ² PROM 76g corresponding to the vehicle type of the vehicle 10 detected by the vehicle type detector 25 in the information signal is Since it is an address location where data is not written, it is "000".

Accordingly, since the random ID of the holder 100 and the vehicle type “100” of the vehicle 10 detected by the vehicle type detector 25 do not correspond, the CPU 79a (80a)
It is determined that D does not correspond.

According to the fourth embodiment, the third embodiment
The same effect as that of the embodiment can be obtained.

The configuration of the fourth embodiment is the same as that of the first embodiment.
Holder 100 in transponder unit 90 of embodiment
Storage means for holding a random ID of E ² PR
It is also possible to apply as a substitute for the OM 67b.

The holder 100 of the transponder unit 90 of the first embodiment is replaced with the structure of the fourth embodiment.
And if the responder used in place of the E ² PROM67b, 76 of the main body 110, the second access means E in the claims, is constituted in step S63 and step S75 in the flowchart of FIG. 16, the storage means D is E ² PROM 76
g.

Also, the configuration of the above-described fourth embodiment is replaced with the second embodiment.
Transponder main body 1 in transponder unit 90A of the embodiment
When used in place of the 10A E ² PROM 76, the fourth access means R in the claims may be replaced by a step SA in FIG.
59 and step SA83, and the storage means D
And thus it is composed of ² PROM76g.

Further, as long as it is determined according to the type of the vehicle 10, one or both of the random IDs of the holder 100 and the transponder main body 110 may be individually set to be invariable. , In which case, the first
In the transponder unit 90 of the embodiment, the E
² PROM 67b and E ² PROM 7 of the transponder main body 110
6 in the transponder unit 90A of the second embodiment, the E ² PROM 76 of the transponder main body 110 may be constituted by a read-only ROM.

In the case where the random ID of one or both of the holder 100 and the transponder main body 110 is not changed from the random ID determined according to the type of the vehicle 10, the above-described third and fourth embodiments are described. Is adopted, the E ² PROMs 76 a to 76 c and the E ² PROM 76 g
May be changed to ROM.

Further, through the first and second embodiments described above, the microcomputer may not be provided on the responder main body 110, 110A side, but may be provided on the holder 100, 100A side. Holder 10
0A, 100A and the transponder main body 110, 110A.
The boundary between the portion of A that is fixed to the vehicle 10 and the portion that can be removed from the vehicle 10 is not limited to those shown in the first and second embodiments, and is arbitrary.

In the first and second embodiments described above, the holders 100, 100 and the transponder bodies 110, 110
The case where the present invention is applied to the authentication performed between A is described. However, in the present invention, for example, the transponder is fixed to the dashboard 18 of the vehicle 10 and the prepaid amount information and the like are stored. When a portable storage medium is inserted and removed, the present invention can also be applied to authentication performed with a portable storage medium once removed from the transponder and reinserted.

The portable storage medium in this case includes:
Although an IC card is the most popular, a magnetic recording type storage medium or another storage medium may be used as long as there is no problem in storage capacity, access speed, handling of stored information, and the like. .

Further, in the first and second embodiments described above, the case where the toll is collected by the simple collection method has been described. However, the present invention is applied to both the toll booth at the entrance and the toll booth at the exit. Needless to say, the present invention is also applicable to an entrance ticketing / exit collection system in which a toll is collected at an exit tollgate by transmitting and receiving an interrogation signal from the interrogator 29 provided and an information signal thereafter. No.

[0232]

As described above, according to the authentication method for a transponder unit for a vehicle according to the first aspect of the present invention, a vehicle can be attached to and detached from a holder that is irremovably provided in the vehicle. A transponder unit for a vehicle configured by mounting a transponder body, and an information signal transmitted and received wirelessly between the outside of the vehicle and the settlement of various fees related to the vehicle, the holder, Upon performing authentication between the mounted transponder main body and the vehicle side, vehicle-side vehicle type information indicating a vehicle type of the vehicle that the vehicle side has,
It is determined whether or not the transponder-side vehicle type information indicating the type of the vehicle included in the transponder main body corresponds to the transponder type.

According to the authentication apparatus for a transponder unit for a vehicle according to the present invention, the transponder main body detachably mountable to the holder is mounted on a holder which is not detachably provided in the vehicle. The transponder unit attached to the holder when transmitting and receiving information signals between the transponder unit for a vehicle and the outside of the vehicle by radio, and performing the payment processing of various charges related to the vehicle. A device for performing authentication between a main body and the vehicle side, a vehicle-side vehicle type information holding unit provided on the vehicle side and holding vehicle-side vehicle type information indicating a vehicle type of the vehicle, and the responder A transponder-side vehicle type information setting means provided on the main body, wherein transponder-side vehicle type information indicating the vehicle type of the vehicle is set; and the vehicle-side vehicle type information provided on any of the vehicle side and the transponder main body. Holding means Determining means for determining whether or not the vehicle-side vehicle type information to be held and the transponder-side vehicle type information set in the transponder-side vehicle type information setting means correspond to each other; When the determination unit determines that the responder-side vehicle type information corresponds, the holder,
The transponder main body attached to the holder is configured to be allowed to function as the vehicle transponder unit.

For this reason, when the transponder main body detachably mountable to the vehicle is mounted on a holder fixed to the vehicle, whether the information relating to the type of vehicle which the transponder main body and the vehicle respectively have corresponds to each other. When the transponder body is mounted on another vehicle of a different model, the corresponding relationship is not generated between the information on the vehicle side due to the difference of the vehicle type. Unauthorized use of transponders of different types of vehicles, which are settled at a lower price than the fare, can be more simply and reliably prevented than assigning an ID to each vehicle or transponder.

Further, according to the method for authenticating a transponder unit for a vehicle according to the present invention, one of the vehicle side vehicle type information and the transponder side vehicle type information is
Of the plurality of storage means provided in any one of the vehicle side and the transponder main body corresponding to the one, stored in at least one of the storage means according to the type of the vehicle,
When performing authentication between the transponder main body mounted on the holder and the vehicle side, of the plurality of storage means, the other one of the vehicle-side vehicle type information and the transponder-side vehicle type information indicates One of the vehicle-side vehicle type information and the transponder-side vehicle type information read out from the at least one storage unit according to the vehicle type of the vehicle is the one of the vehicle-side vehicle type information and the transponder-side vehicle type information. It is determined whether or not one of them corresponds to the other.

According to the authentication apparatus for a transponder unit for a vehicle according to the present invention, the vehicle type information and the response are provided on either the vehicle side or the transponder body. A plurality of storage means for storing any one of the vehicle type information, and provided in any one of the vehicle side and the transponder main body, and the vehicle side vehicle type information and the An access unit that reads one of the vehicle-side vehicle type information and the transponder-side vehicle type information from at least one of the storage units corresponding to the vehicle type of the vehicle indicated by the other one of the transponder-side vehicle type information; Further, any one of the vehicle-side vehicle type information and the transponder-side vehicle type information may be the same as the vehicle-side vehicle type information and the transponder-side vehicle type information in the plurality of storage units. It has a configuration which is stored respectively in said at least one storage means in response to any vehicle type of the vehicle which one is shown.

Further, according to the authentication apparatus for a transponder unit for a vehicle according to the present invention, the plurality of storage means are provided in the transponder main body, and the plurality of storage means are provided among the plurality of storage means. The transponder-side vehicle type information is stored in the at least one storage unit corresponding to the vehicle type of the vehicle indicated by the transponder-side vehicle type information, and the access unit is the vehicle-side vehicle type information among the plurality of storage units. The responder-side vehicle type information is read from the at least one storage unit corresponding to the vehicle type of the vehicle indicated by. The response unit read from the at least one storage unit by the access unit to the responder-side vehicle type information setting unit. The configuration is such that device side vehicle type information is set.

For this reason, since the storage means for storing the vehicle type information is physically different, the presence or absence of correspondence of the vehicle type information itself and one of the vehicle type information of the vehicle and the transponder main body correspond to the vehicle type of the vehicle. It is possible to determine whether or not the transponder main body is mounted on a legitimate vehicle, based on the two factors of whether or not the transponder main body is stored in the correct storage means. Unauthorized use can be more reliably prevented.

According to the method of authenticating a transponder unit for a vehicle according to the third aspect of the present invention, one of the vehicle type information and the transponder type information corresponds to the one. At least one address corresponding to the type of the vehicle indicated by the other of the vehicle-side vehicle type information and the transponder-side vehicle type information in the storage means provided in one of the vehicle side and the transponder main body. When performing authentication between the transponder main body mounted on the holder and the vehicle side, the other of the storage means is one of the vehicle side vehicle type information and the transponder side vehicle type information. The at least one according to the type of the vehicle indicated by
Whether one of the vehicle-side vehicle type information and the responder-side vehicle type information read from the two address locations corresponds to the other of the vehicle-side vehicle type information and the responder-side vehicle type information Was determined.

Further, according to the authentication apparatus for a transponder unit for a vehicle according to the present invention, the vehicle type information and the response are provided on either the vehicle side or the transponder body. Storage means for storing any one of the device side vehicle type information in at least one address location corresponding to the vehicle type of the vehicle indicated by the one; and any one of the vehicle side vehicle type information and the responder side vehicle type information A second access unit that reads one of the vehicle-side vehicle type information and the transponder-side vehicle type information from at least one address location of the storage unit according to the vehicle type of the vehicle indicated by the other vehicle type. And

[0241] According to the authentication apparatus for a transponder unit for a vehicle according to the present invention, the storage means is provided in the transponder main body, and the transponder side vehicle type of the storage means is provided. The responder-side vehicle type information is stored in at least one address location of the storage unit corresponding to the vehicle type of the vehicle indicated by the information, and the second access unit stores the vehicle-side vehicle type information in the storage unit. The transponder-side vehicle type information is read from the at least one address location corresponding to the vehicle type shown, and the second access unit reads the transponder-side vehicle type information setting unit from at least one location of the storage unit. Further, the transponder-side vehicle type information is set.

For this reason, if the vehicle type indicated by the vehicle type information is different, the address of the storage means for storing the vehicle type information is different between the vehicle side and the transponder main body. Whether the transponder main body is mounted on a legitimate vehicle or not, depending on two factors, that is, whether any vehicle type information of the vehicle side or the transponder main body is stored at a correct address location corresponding to the vehicle type. Can be determined. Therefore, unauthorized use of the transponder body of another vehicle of a different vehicle type can be more reliably and
This can be prevented at low cost with a single storage means.

Further, according to the authentication method for a transponder unit for a vehicle according to the present invention, the vehicle type information on the transponder side is transmitted to the vehicle side and the transponder body mounted on the holder. In any one of the above, the information is generated based on the vehicle-side vehicle type information of the vehicle.

According to the authentication apparatus for a transponder unit for a vehicle of the present invention described in claim 22, the vehicle-side vehicle type information holding means is provided on one of the vehicle side and the transponder main body. The transponder-side vehicle type information generation unit that generates the transponder-side vehicle type information based on the held vehicle-side vehicle type information, wherein the transponder-side vehicle type information generated by the transponder-side vehicle type information generation unit is configured to receive the response time. It is configured to be set in the device side vehicle type information setting means.

For this reason, the transponder main body has the vehicle type information based on the vehicle type information of the vehicle to which the transponder main body is mounted, as the vehicle type information indicating the normal vehicle type. When the transponder body is attached to the holder, the vehicle type information of the transponder body does not always correspond to the vehicle type information possessed by the vehicle, and the transponder body is illegally used for the toll adjustment process of other vehicles Can be reliably prevented.

Further, according to the method for authenticating a transponder unit for a vehicle according to the present invention, the vehicle-side vehicle type information of the vehicle having the transponder body mounted on the holder is transmitted to the vehicle. Side, and in one of the transponder main bodies attached to the holder, the transponder body is encrypted with encrypted data and held as transponder-side vehicle type information, and after being detached from the holder, The transponder-side vehicle type information of the transponder main body attached to the holder, in any one of the transponder main body and the vehicle side,
The vehicle-side vehicle type information encrypted by the encrypted data is decrypted by decryption data for determining the original vehicle-side vehicle type information before encryption, and the transponder side decrypted by the decryption data. By determining whether or not the vehicle type information corresponds to the vehicle-side vehicle type information possessed by the vehicle side, it is determined whether or not the vehicle-side vehicle type information corresponds to the transponder-side vehicle type information. did.

Further, according to the authentication apparatus for a transponder unit for a vehicle according to the present invention, the transponder-side vehicle type information generating means includes an encrypted data holding means for storing encrypted data; Encrypting means for encrypting the vehicle-side vehicle type information held by the vehicle-side vehicle type information holding unit with the encrypted data held by the encrypted data holding unit; and the transponder-side vehicle type information setting unit. The vehicle-side vehicle type information encrypted by the encrypting unit with the encrypted data is set as the transponder-side vehicle type information, and the determining unit encrypts the encrypted unit with the encrypted data. From the vehicle-side vehicle type information, the decryption data holding means for holding the decryption data for calculating the original vehicle-side vehicle type information before encryption, and the transponder-side vehicle type information setting means are set. Decoding means for decoding the transponder-side vehicle type information with the decoded data held by the decoded data holding means, wherein the decoding means decodes the response by the decoding data. When it is determined that the container-side vehicle type information corresponds to the vehicle-side vehicle type information held by the vehicle-side vehicle type information holding unit, the holder includes:
The transponder main body attached to the holder is configured to be allowed to function as the vehicle transponder unit.

For this reason, since the vehicle type information held by the transponder main body is obtained by encrypting the vehicle type information held by the vehicle side, the two types do not completely match each other. Since there is only encryption or decryption data on the vehicle side or the transponder side, which is the basis for correlating the information, the vehicle type information on the vehicle side and the corresponding vehicle type information on the transponder side by external analysis It is possible to make it difficult to forge the vehicle, and to reliably prevent unauthorized use of the transponder main body of another vehicle.

Further, according to the method for authenticating a transponder unit for a vehicle according to the present invention, the transponder body detachably mountable to the holder is mounted on a holder which is not detachably provided on the vehicle. The transponder unit attached to the holder when transmitting and receiving information signals between the transponder unit for a vehicle and the outside of the vehicle by radio, and performing the payment processing of various charges related to the vehicle. In performing authentication between the main body and the vehicle side, a vehicle type determination that is given to the vehicle transponder unit based on the information signal from the outside of the vehicle and that indicates a vehicle type of the vehicle determined outside the vehicle. It is determined whether the information corresponds to the transponder-side vehicle type information indicating the vehicle type of the vehicle included in the transponder main body.

Further, according to the authentication apparatus for a transponder unit for a vehicle according to the present invention, the transponder body detachably mountable to the holder is mounted on a holder which is not detachably provided on the vehicle. The transponder unit attached to the holder when transmitting and receiving information signals between the transponder unit for a vehicle and the outside of the vehicle by radio, and performing the payment processing of various charges related to the vehicle. A device for performing authentication between the main body and the vehicle side, provided in the transponder main body, transponder-side vehicle type information setting means for setting transponder-side vehicle type information indicating a vehicle type of the vehicle, , Provided on any one of the vehicle side and the transponder body,
The vehicle type determination information, which is given to the vehicle transponder unit by the information signal from outside the vehicle and indicates the vehicle type determined outside the vehicle, is set in the transponder-side vehicle type information setting means. A second determining unit that determines whether or not the transponder-side vehicle type information corresponds; when the second determining unit determines that the vehicle type determining information corresponds to the transponder-side vehicle type information, The holder and the transponder main body attached to the holder are configured to be allowed to function as the vehicle transponder unit.

For this reason, when a vehicle passes through, for example, a gate of a toll gate, the vehicle type is detected at the gate side, and the detected vehicle type is notified to the vehicle transponder unit by transmitting and receiving information signals. In the case, since it is determined whether or not the transponder main body is genuine of the own vehicle based on objective vehicle type information obtained by detecting the vehicle outside the vehicle,
When installing the transponder main unit that was mounted on another vehicle of a different model, the correspondence between the information of the vehicle side due to the difference of the vehicle type does not occur, and it is settled at a price lower than the original toll Unauthorized use of transponders of vehicles of different vehicle types can be prevented more easily and more reliably than by assigning an ID to each vehicle or transponder.

Further, according to the authentication method for a transponder unit for a vehicle according to the present invention, the transponder-side vehicle type information is stored in a plurality of storage means provided in the transponder main body. When the authentication is performed between the transponder main body mounted on the holder and the vehicle side, the information is stored in at least one of the storage units corresponding to the type of the vehicle indicated by the determination information. And determining whether or not the transponder-side vehicle type information read from the at least one storage unit corresponding to the vehicle type of the vehicle indicated by the vehicle type determination information corresponds to the vehicle type determination information.

Further, according to the authentication apparatus for a transponder unit for a vehicle of the present invention described in claim 25, a plurality of storage means provided in the transponder main body and storing the transponder-side vehicle type information, The transponder-side vehicle type is provided in at least one of the vehicle side and the transponder main body, and from at least one of the plurality of storage units corresponding to the vehicle type of the vehicle indicated by the vehicle type determination information. A third access unit for reading information, wherein the responder-side vehicle type information is stored in the at least one storage unit of the plurality of storage units according to the vehicle type indicated by the responder-side vehicle type information. A configuration in which the responder-side vehicle type information read from the at least one storage unit by the third access unit is set in the responder-side vehicle type information setting unit. It was.

Therefore, as in the case of the vehicle transponder unit authentication method according to the second aspect of the present invention, when the vehicle type indicated by the vehicle type information is different, the storage means for storing the vehicle type information in the transponder main body is physically connected. Therefore, the transponder main body is determined to be a legitimate vehicle by two factors, that is, whether the vehicle type information itself is supported and whether the vehicle type information of the transponder main body is stored in a correct storage means corresponding to the vehicle type. It is possible to determine whether or not the transponder is mounted, so that unauthorized use of the transponder main body of another vehicle of a different vehicle type can be more reliably prevented.

Further, according to the authentication method of the transponder unit for a vehicle according to the present invention, the transponder-side vehicle type information is stored in the storage unit provided in the transponder main body. When stored in at least one address location corresponding to the type of the vehicle shown, when performing authentication between the transponder body attached to the holder and the vehicle side,
In the storage means, it is determined whether or not the transponder-side vehicle type information read from the at least one address location corresponding to the vehicle type of the vehicle indicated by the vehicle type determination information corresponds to the vehicle type determination information. I did it.

According to the authentication apparatus for a transponder unit for a vehicle according to the present invention, the transponder type information is provided in the transponder main body, and the transponder type information indicates the transponder type information. Storage means stored in at least one address location corresponding to the vehicle type of the vehicle, and the transponder-side vehicle type information from at least one address location of the storage means corresponding to the vehicle type of the vehicle indicated by the vehicle type determination information A fourth access unit that reads out the response unit side vehicle type information read from at least one location of the storage unit by the fourth access unit. did.

Therefore, similarly to the vehicle transponder unit authentication method according to the third aspect of the present invention, if the vehicle type indicated by the vehicle type information is different, the address location of the storage means for storing the vehicle type information in the transponder main body. The transponder body is mounted on a legitimate vehicle depending on two factors: whether the vehicle type information itself is compatible and whether the vehicle type information of the transponder body is stored at the correct address location according to the vehicle type. It is possible to determine whether or not
Unauthorized use of the transponder main body of another vehicle of a different vehicle type can be prevented more reliably and inexpensively with a single storage means.

Further, according to the vehicle transponder unit authentication method according to the ninth aspect of the present invention, the vehicle side is provided with vehicle side vehicle type information indicating the vehicle type of the vehicle, and the transponder side vehicle type information is provided. Is generated based on the vehicle-side vehicle type information of the vehicle in one of the vehicle side and the transponder main body mounted on the holder.

According to the authentication apparatus for a transponder unit for a vehicle according to the present invention, the vehicle type information provided on the vehicle side and holding the vehicle type information indicating the type of the vehicle. Holding means, provided on one of the vehicle side and the transponder main body, for generating the transponder-side vehicle type information based on the vehicle-side vehicle type information held by the vehicle-side vehicle type information retaining means; Vehicle type information generating means, wherein the transponder-side vehicle type information generated by the transponder-side vehicle type information generating means is set in the transponder-side vehicle type information setting means.

For this reason, the transponder main body has the vehicle type information based on the vehicle type information of the vehicle to which the transponder main body is mounted as vehicle type information indicating a proper vehicle type. When the transponder main body is attached to the holder, the vehicle type information of the transponder main body must be included in the objective vehicle type information obtained by detecting the vehicle outside the vehicle, indicating the same vehicle type information as the vehicle type information of the vehicle. By not responding, it is possible to reliably prevent the transponder main body from being illegally used for the toll settlement process of another vehicle.

Further, according to the method of authenticating a transponder unit for a vehicle according to the present invention, the vehicle type information of the vehicle having the transponder main body mounted on the holder is encrypted. By encrypting the data, the transponder-side vehicle type information is generated, and the transponder-side vehicle type information of the transponder main body attached to the holder again after being detached from the holder is referred to as the transponder main body. In one of the vehicle side and the vehicle side vehicle type information encrypted by the encrypted data, decrypted by the decryption data for determining the original vehicle side vehicle type information before encryption, the decrypted data The vehicle type information indicating the vehicle type of the vehicle given to the vehicle transponder unit by the information signal is determined based on the transponder-side vehicle type information decoded outside the vehicle. By determining whether the corresponding to the constant information, and the vehicle-side vehicle type information and said response-side vehicle type information is to perform the determination of whether the corresponding.

According to the authentication apparatus for a transponder unit for a vehicle according to the present invention, the transponder-side vehicle type information generating means includes an encrypted data holding means for storing encrypted data; Encrypting means for encrypting the vehicle-side vehicle type information held by the vehicle-side vehicle type information holding unit with the encrypted data held by the encrypted data holding unit; and the transponder-side vehicle type information setting unit. The vehicle-side vehicle type information encrypted by the encrypting unit with the encrypted data is set as the transponder-side vehicle type information, and the second determining unit determines that the encrypting unit encrypts the encrypted vehicle with the encrypted data. Decryption data holding means for holding decryption data for determining the original vehicle-side vehicle type information before encryption from the encrypted vehicle-side vehicle type information; and the responder-side vehicle type information setting means. Decoding means for decoding the obtained transponder-side vehicle type information with the decoded data held by the decoded data holding means, and the decoding means has decoded the decoded data by the decoded data. When it is determined that the transponder-side vehicle type information and the vehicle type determination information held by the vehicle type determination information holding unit correspond to each other, the holder and the transponder main body attached to the holder are connected to the vehicle transponder. It is configured to allow it to function as a unit.

Therefore, since the vehicle type information held by the transponder main body is obtained by encrypting the vehicle type information held by the vehicle side, an objective vehicle type obtained by detecting the vehicle outside the vehicle is obtained. The content of the information does not completely match the vehicle type information held in the transponder main body, and the encryption or decryption data serving as a reference for matching both vehicle type information is transmitted to and from the vehicle side. Because of this, it is difficult to forge the vehicle type information from the outside of the vehicle and the corresponding vehicle type information on the transponder side by analysis from the outside, and illegal use of the transponder body of another vehicle Can be reliably prevented.

Further, according to the authentication method for a transponder unit for a vehicle according to the present invention, while the transponder main body is mounted on the holder, the vehicle side and the transponder main body can be used. In either case, the content of the vehicle-side vehicle type information is updated, and each time the vehicle-side vehicle type information is updated, the transponder-side vehicle type information is updated based on the updated vehicle-side vehicle type information. Updated to device side model information.

According to the authentication apparatus for a transponder unit for a vehicle according to the present invention described in claim 29, the transponder main body is provided on one of the vehicle side and the transponder main body, and the holder is provided with the transponder main body. A vehicle type information updating unit that updates contents of the vehicle side vehicle type information held by the vehicle side vehicle type information holding unit while the vehicle is mounted, wherein the responder side vehicle type information generating unit includes: Each time the vehicle side vehicle type information is updated, the responder side vehicle type information is generated based on the updated vehicle side vehicle type information, and the responder side vehicle type information set in the responder side vehicle type information setting means. However, each time the transponder-side vehicle type information generating means generates the transponder-side vehicle type information based on the updated vehicle-side vehicle type information, the transponder-side vehicle type information is updated to the latest transponder-side vehicle type information.

For this reason, since the vehicle type information is updated on both the vehicle side and the transponder main body, the original transponder main body is transferred from the holder of the vehicle to the transponder main body stolen from another vehicle and brought in. In order to forge the vehicle type information that the original transponder main body had when it was removed and to have the transponder main body from another vehicle, the vehicle side that is the basis of the vehicle type information of the original transponder main body This makes it difficult to analyze and recognize vehicle type information from the outside, and to prevent fraudulent attempts to take correspondence of vehicle type information between the transponder main body brought from another vehicle and the vehicle side with forged vehicle type information. it can.

Further, according to the authentication method of the transponder unit for a vehicle of the present invention, the updating of the contents of the vehicle side vehicle type information is performed between the transponder unit for the vehicle and the outside of the vehicle. The transmission is performed at a frequency corresponding to a change in the degree of transmission and reception of the information signal.

According to the authentication apparatus for a transponder unit for a vehicle according to the present invention, the transponder unit for vehicle is provided on one of the vehicle side and the transponder main body. The vehicle type information updating unit further includes a change detecting unit that detects a change in the degree of transmission and reception of the information signal performed between the vehicle and the outside of the vehicle. The content of the vehicle-side vehicle type information is updated at a frequency corresponding to a change in the degree of transmission and reception of the information signal with the outside of the vehicle.

For this reason, if the transmission and reception of the information signal for the toll adjustment process with the toll road side occurs frequently, the vehicle type information on the vehicle side is updated by a corresponding amount, and the vehicle type information on the transponder main body is updated. Since a large number of responders are used, the fraudulent attempt to deal with the vehicle type information by counterfeiting the vehicle type information due to forgery of the vehicle type information can be prevented with higher accuracy as the transponder body is used more frequently.

Furthermore, according to the method for authenticating a transponder unit for a vehicle according to the present invention, the transponder main body detachably mountable to the holder is mounted on a holder which is not removable from the vehicle. The transponder unit attached to the holder when transmitting and receiving information signals between the transponder unit for a vehicle and the outside of the vehicle by radio, and performing the payment processing of various charges related to the vehicle. When performing authentication between the main body and the vehicle side, vehicle-side identification information for identifying the vehicle that the vehicle side has, the vehicle side,
In one of the transponder main bodies mounted on the holder, the transponder main body is encrypted with encrypted data and held as transponder-side specific information, and is attached to the holder again after being detached from the holder. The transponder-side identification information of the transponder main body that has been obtained, in either the transponder main body or the vehicle side, from the vehicle-side identification information encrypted by the encrypted data, the original before encryption. The vehicle-side specific information is decoded by decoding data for determining the same, and it is determined whether the transponder-side specific information decoded by the decoded data corresponds to the vehicle-side specific information of the vehicle. I did it.

According to the authentication apparatus for a transponder unit for a vehicle according to the present invention, the transponder body detachably mountable to the holder is mounted on a holder which is not detachably provided on the vehicle. The transponder unit attached to the holder when transmitting and receiving information signals between the transponder unit for a vehicle and the outside of the vehicle by radio, and performing the payment processing of various charges related to the vehicle. A device for performing authentication between a main body and the vehicle side, wherein the device is provided on the vehicle side and holds vehicle-side identification information holding means for holding vehicle-side identification information for identifying the vehicle; An encrypted data holding means provided in one of the transponder main bodies and holding the encrypted data; and an encrypted data holding means provided in one of the vehicle and the transponder main body and held by the encrypted data holding means. A second encrypting means for encrypting the vehicle-side specific information held by the vehicle-side specific information holding means with encrypted data, and a second encrypting means provided in the transponder main body, wherein the second encrypting means uses the encrypted data A transponder-side identification information setting unit in which the encrypted vehicle-side identification information is set as the transponder-side identification information; and the vehicle and the transponder main body, wherein the second encryption unit is provided From the vehicle-side identification information encrypted by the encrypted data, a decryption data holding unit that holds decryption data for determining the original vehicle-side identification information before encryption,
The transponder-side identification information provided in one of the vehicle and the transponder main body and set in the transponder-side identification information setting unit is decoded by the decoded data held by the decoded data holding unit. A second decryption means for converting, the transponder-side identification information provided in any one of the vehicle and the transponder main body, the transponder-side identification information decrypted by the second decryption means using the decrypted data; A third determining unit that determines whether the vehicle-side specific information held by the specific information holding unit corresponds to the vehicle-side specific information, wherein the transponder-side specific information decrypted by the decrypted data; When the third determination unit determines that the vehicle-side identification information held by the information holding unit corresponds, the holder and the transponder main body mounted on the holder serve as the vehicle transponder unit. It was configured to allow you to function.

For this reason, since the specific information held in the transponder main body is obtained by encrypting the specific information held in the vehicle side, there is no direct agreement between the two, and furthermore, both of them are specified. Since there is only one of the encryption and decryption data, which is the reference for matching the information, on either the vehicle side or the transponder side, the specific information on the vehicle side and the corresponding specific information on the transponder side are analyzed by an external analysis. Forgery becomes difficult, and unauthorized use of the transponder body of another vehicle can be reliably prevented.

Further, according to the authentication method for a transponder unit for a vehicle according to the present invention, the vehicle-side identification information and the transponder-side identification information are combined with the vehicle type information for identifying the vehicle type of the vehicle. I did it.

According to the authentication apparatus for a transponder unit for a vehicle of the present invention described in claim 32, the vehicle-side identification information and the transponder-side identification information are vehicle type information for identifying a vehicle type of the vehicle. There was a certain configuration.

For this reason, by using the specific information as the information for specifying the vehicle type, the unauthorized use of the transponder main body of the different vehicle type can be performed with higher accuracy in terms of the difficulty of forgery of the specific information or the vehicle type information. Can be prevented.

Further, according to the authentication method for a transponder unit for a vehicle according to the present invention, while the transponder main body is mounted on the holder, the vehicle side and the transponder main body can be used. In any one of the cases, the content of the vehicle-side identification information is updated, and each time the vehicle-side identification information is updated, the transponder-side identification information is updated based on the updated vehicle-side identification information. Updated to device side model information.

According to the authentication apparatus for a transponder unit for a vehicle of the present invention described in claim 33, the transponder main body is provided on one of the vehicle side and the transponder main body, and the holder is provided with the transponder main body. The apparatus further comprises a specific information updating means for updating the content of the vehicle-side specific information held by the vehicle-side specific information holding means while the vehicle is mounted, wherein the second encrypting means includes the specific information updating means, Each time the vehicle-side identification information is updated, the vehicle-side identification information is encrypted, and the transponder-side identification information set in the transponder-side identification information setting unit is the vehicle-side identification information updated by the second encryption unit. Each time the specific information is encrypted, it is updated to the latest transponder-side specific information.

For this reason, since the specific information of the transponder main body is updated in accordance with the update of the specific information of the vehicle in which the vehicle type is specified, the specific information corresponding to the specific information of the vehicle is forged. In this case, it is possible to prevent the transponder from being held in the transponder main body, thereby preventing the injustice of trying to correspond to the specific information with the vehicle.

Further, according to the authentication method for a transponder unit for a vehicle according to the present invention, the content of the vehicle-side identification information is updated between the transponder unit for the vehicle and the outside of the vehicle. The transmission is performed at a frequency corresponding to a change in the degree of transmission and reception of the information signal.

According to the authentication apparatus for a transponder unit for a vehicle of the present invention described in claim 34, the authentication apparatus is provided on one of the vehicle side and the transponder main body, and the transponder unit for the vehicle and the The vehicle further comprises a change detection unit that detects a change in the degree of transmission and reception of the information signal performed between the vehicle and the outside of the vehicle, wherein the specific information updating unit includes the vehicle transponder unit detected by the change detection unit, The content of the vehicle-side identification information is updated at a frequency corresponding to a change in the degree of transmission and reception of the information signal with the outside of the vehicle.

For this reason, when the transmission and reception of the information signal for the toll adjustment process with the toll road side occurs frequently, the specific information on the vehicle side is updated by a corresponding amount, and the specific information on the transponder main body is updated. Since a large number of the responders are updated in accordance with this, it is possible to prevent a fraudulent attempt to take correspondence of the specific information with the vehicle due to forgery of the specific information with higher accuracy as the transponder body is used more frequently.

[Brief description of the drawings]

FIG. 1 is a basic configuration diagram of an authentication device for a transponder unit for a vehicle according to the present invention.

FIG. 2 is a basic configuration diagram of an authentication device for a transponder unit for a vehicle according to the present invention.

FIG. 3 is a basic configuration diagram of an authentication device for a transponder unit for a vehicle according to the present invention.

FIG. 4 is a basic configuration diagram of an authentication device for a transponder unit for a vehicle according to the present invention.

FIG. 5 is a basic configuration diagram of an authentication device for a transponder unit for a vehicle according to the present invention.

FIG. 6 is a basic configuration diagram of an authentication device for a transponder unit for a vehicle according to the present invention.

FIG. 7 is a basic configuration diagram of an authentication device for a transponder unit for a vehicle according to the present invention.

FIG. 8 is a perspective view showing a schematic configuration of a tollgate that collects tolls for a vehicle equipped with the vehicle transponder according to the present invention.

FIG. 9 is an explanatory diagram showing an indoor configuration of a vehicle in which a vehicle transponder to which the authentication device of the present invention is applied is installed.

FIG. 10 is a perspective view of the vehicle transponder according to the first embodiment of the present invention as viewed from the front side.

FIG. 11 is a block diagram showing an electrical schematic configuration of the vehicle transponder of FIG. 8;

FIG. 12 is a sectional view showing the internal configuration of the vehicle transponder of FIG.

FIG. 13 is a RAM of the microcomputer shown in FIG. 11;
3 is a memory area map.

14 is a ROM of the microcomputer shown in FIG.
5 is a flowchart showing a process performed by the CPU according to a control program stored in the CPU.

15 is a ROM of the microcomputer shown in FIG.
5 is a flowchart showing a process performed by the CPU according to a control program stored in the CPU.

FIG. 16 shows a ROM of the microcomputer shown in FIG. 11;
5 is a flowchart showing a process performed by the CPU according to a control program stored in the CPU.

FIG. 17 is a block diagram showing an electrical schematic configuration of a vehicle transponder according to a second embodiment of the present invention.

18 is a RAM of the microcomputer shown in FIG.
3 is a memory area map.

FIG. 19 is a ROM of the microcomputer shown in FIG.
5 is a flowchart showing a process performed by the CPU according to a control program stored in the CPU.

20 is a ROM of the microcomputer shown in FIG.
5 is a flowchart showing a process performed by the CPU according to a control program stored in the CPU.

FIG. 21 is a ROM of the microcomputer shown in FIG.
5 is a flowchart showing a process performed by the CPU according to a control program stored in the CPU.

FIG. 22 is a diagram illustrating a random responder unit according to a third embodiment of the present invention, which can be used in place of the E ² PROM of the transponder main body in the transponder units of the first and second embodiments of the present invention. FIG. 2 is a block diagram showing a schematic configuration of a storage unit for use.

FIG. 23 is a diagram showing a random ID holding of the transponder unit according to the fourth embodiment of the present invention, which can be used in place of the E ² PROM of the transponder main body in the transponder units of the first and second embodiments of the present invention. FIG. 2 is a block diagram showing a schematic configuration of a storage unit for use.

[Explanation of symbols]

 Reference Signs List 10 vehicle 29 vehicle exterior 67bA vehicle-side vehicle type information holding means 67bB vehicle-side specific information holding means 79,80 microcomputer 79a, 80a CPU 79b, 80b RAM 79c, 80c ROM 90 vehicle transponder unit 100 holder 110 portable unit A response Vehicle type information setting means B Judgment means C Access means D, a to n storage means E Second access means F Responder side vehicle type information generation means G Encrypted data holding means H Encryption means J Decrypted data holding means K Decryption Encrypting means N second determining means P third accessing means R fourth accessing means S vehicle type information updating means T change detecting means V second encrypting means W responder-side specific information setting means X second decrypting means Y third determining Means Z Specific information updating means

Claims (34)

[Claims] 1. An information signal between a transponder unit for a vehicle, which is configured by attaching a portable unit detachably mountable to a holder to a non-removable holder provided on a vehicle, and an outside of the vehicle. When wirelessly transmitting and receiving, and performing the payment processing of various charges related to the vehicle, when performing authentication between the portable unit attached to the holder and the vehicle side, the vehicle type of the vehicle that the vehicle side has Determining whether or not the vehicle-side vehicle type information shown and the transponder-side vehicle type information indicating the vehicle type of the vehicle possessed by the portable unit correspond to each other. . 2. A method according to claim 2, wherein one of the vehicle-side vehicle type information and the transponder-side vehicle type information is provided in a plurality of storage means provided in one of the vehicle side and the portable unit corresponding to the one. When authentication is performed between the portable unit mounted on the holder and the vehicle side, the vehicle-side vehicle type is stored in at least one of the storage units according to the vehicle type of the vehicle. Any one of the vehicle-side vehicle type information and the transponder-side vehicle type information read from the at least one storage unit corresponding to the vehicle type of the vehicle indicated by the other one of the information and the transponder-side vehicle type information The authentication method for a transponder unit for a vehicle according to claim 1, wherein it is determined whether or not one of the two corresponds to the other of the vehicle-side vehicle type information and the transponder-side vehicle type information. 3. The storage device according to claim 2, wherein one of the vehicle-side vehicle type information and the transponder-side vehicle type information is provided in one of the vehicle side and the portable unit corresponding to the one. The vehicle type information is stored in at least one address location corresponding to the vehicle type of the vehicle indicated by one of the vehicle type information and the transponder type vehicle type information, and authentication is performed between the portable unit mounted on the holder and the vehicle side. The vehicle read out from the at least one address location corresponding to the vehicle type of the vehicle indicated by one of the vehicle-side vehicle type information and the transponder-side vehicle type information in the storage unit. It is determined whether or not one of the vehicle type information and the transponder type information corresponds to the other of the vehicle type information and the transponder type information. 3. The authentication method for a transponder unit for a vehicle according to claim 1 or 2. 4. The information processing apparatus according to claim 1, wherein the transponder-side vehicle type information is generated based on the vehicle-side vehicle type information of the vehicle in one of the vehicle and the portable unit mounted on the holder. The authentication method for a transponder unit for a vehicle according to claim 1, 2 or 3. 5. The vehicle-side vehicle type information of the vehicle in which the portable unit is mounted on the holder is provided as encrypted data in one of the vehicle side and the portable unit mounted on the holder. The portable unit is provided with the transponder-side vehicle type information as the transponder-side vehicle type information, and after being detached from the holder, the transponder-side vehicle type information of the portable unit attached to the holder again. In any one of the above, decryption is performed with decryption data for determining the original vehicle-side vehicle type information before encryption from the vehicle-side vehicle type information encrypted with the encrypted data, and decryption is performed with the decryption data. It is determined whether or not the responder-side vehicle type information corresponds to the vehicle-side vehicle type information of the vehicle, so that the vehicle-side vehicle type information and the responder-side vehicle type information correspond to each other. 5. The authentication method for a transponder unit for a vehicle according to claim 4, wherein it is determined whether or not to perform. 6. An information signal between a transponder unit for a vehicle, which is configured by mounting a portable unit detachably mounted on the holder on a non-removable holder provided on the vehicle, and the outside of the vehicle. Wirelessly transmitting and receiving the various signals related to the vehicle, when performing authentication between the portable unit attached to the holder and the vehicle side, the information signal from outside the vehicle The vehicle type determination information, which is given to the vehicle transponder unit and indicates the vehicle type of the vehicle determined outside the vehicle, corresponds to the transponder-side vehicle type information indicating the vehicle type of the vehicle possessed by the portable unit. A method for authenticating a transponder unit for a vehicle, comprising: 7. The transponder-side vehicle type information is stored in at least one of the plurality of storage units provided in the portable unit, the storage unit corresponding to the vehicle type of the vehicle indicated by the vehicle type determination information, When performing authentication between the portable unit attached to a holder and the vehicle side, the authentication unit reads out from the at least one storage unit corresponding to the vehicle type of the vehicle indicated by the vehicle type determination information among the plurality of storage units. 7. The authentication method for a transponder unit for a vehicle according to claim 6, wherein it is determined whether or not the responder-side vehicle type information corresponds to the vehicle type determination information. 8. The transponder-side vehicle type information is stored in at least one address location corresponding to the vehicle type of the vehicle indicated by the vehicle type determination information among the storage means provided in the portable unit, and is attached to the holder. When performing authentication between the portable unit and the vehicle side, the at least one of the storage units according to the vehicle type of the vehicle indicated by the vehicle type determination information.
8. The authentication method for a transponder unit for a vehicle according to claim 6, wherein it is determined whether or not the transponder-side vehicle type information read from the two address locations corresponds to the vehicle type determination information. 9. The method according to claim 9, wherein the vehicle side has vehicle-side vehicle type information indicating a vehicle type of the vehicle, and the transponder-side vehicle type information is either one of the vehicle side and the portable unit mounted on the holder. The authentication method for a transponder unit for a vehicle according to claim 6, wherein the information is generated on the basis of the vehicle type information of the vehicle. 10. The transponder-side vehicle type information is generated by encrypting the vehicle-side vehicle type information of the vehicle in which the portable unit is mounted on the holder with encrypted data, and detaches from the holder. After that, the transponder-side vehicle type information of the portable unit attached to the holder again, in either the portable unit or the vehicle side, from the vehicle-side vehicle type information encrypted by the encrypted data. The original vehicle-side vehicle type information before encryption is decrypted by decryption data for determining the same, and the transponder-side vehicle type information decrypted by the decrypted data is determined outside the vehicle to determine the information signal. The vehicle-side vehicle type information and the transponder-side vehicle type information are determined by determining whether or not it corresponds to vehicle type determination information indicating the vehicle type of the vehicle given to the vehicle transponder unit. 10. The authentication method for a transponder unit for a vehicle according to claim 9, wherein it is determined whether or not the above conditions are satisfied. 11. While the portable section is mounted on the holder, the content of the vehicle-side model information is updated on either the vehicle side or the portable section, and the vehicle-side model information is updated. 11. The vehicle according to claim 4, wherein the transponder-side vehicle type information is updated to the latest transponder-side vehicle type information generated based on the updated vehicle-side vehicle type information each time. Authentication method of the transponder unit. 12. Updating the contents of the vehicle-side vehicle type information,
The authentication method for a vehicle transponder unit according to claim 11, wherein the authentication is performed at a frequency corresponding to a change in a degree of transmission and reception of the information signal between the vehicle transponder unit and the outside of the vehicle. 13. An information signal between a transponder unit for a vehicle, which is configured by attaching a portable unit detachably mounted to a holder to a holder provided non-removably on a vehicle, and the outside of the vehicle. Is transmitted and received wirelessly, and when performing the payment processing of various charges related to the vehicle, when performing authentication between the portable unit attached to the holder and the vehicle side, the vehicle that the vehicle side has is specified. The vehicle-side identification information is encrypted with encrypted data in one of the vehicle side and the portable unit attached to the holder, and the portable unit is given the transponder-side identification information. After the detachment, the transponder-side identification information of the portable unit attached to the holder again, before being encrypted by the encrypted data in either the portable unit or the vehicle side The transponder-side identification information decrypted by the decryption data for calculating the original vehicle-side identification information before encryption from the vehicle-side identification information, and the transponder-side identification information decrypted by the decrypted data is the vehicle that the vehicle side has A method for authenticating a transponder unit for a vehicle, comprising determining whether or not the information corresponds to side identification information. 14. The authentication method for a transponder unit for a vehicle according to claim 12, wherein the vehicle-side identification information and the transponder-side identification information are used as vehicle type information for specifying a vehicle type of the vehicle. 15. While the portable unit is mounted on the holder, the content of the vehicle-side specific information is updated on either the vehicle side or the portable unit, and the vehicle-side specific information is updated. 15. The transponder-side specific information is updated to the latest transponder-side vehicle type information generated based on the updated vehicle-side specific information each time.
The authentication method of the transponder unit for a vehicle according to the above. 16. Updating the content of the vehicle-side identification information
16. The authentication method for a vehicle transponder unit according to claim 15, wherein the authentication is performed at a frequency corresponding to a change in the degree of transmission and reception of the information signal between the vehicle transponder unit and the outside of the vehicle. 17. An information signal between a transponder unit for a vehicle, which is configured by attaching a portable unit detachably mounted to a holder to a non-removable holder provided on a vehicle, and the outside of the vehicle. A device for performing authentication between the portable unit attached to the holder and the vehicle side when performing the payment processing of various charges related to the vehicle, A vehicle-side vehicle type information holding unit that is provided and holds vehicle-side vehicle type information indicating a vehicle type of the vehicle; and a transponder-side vehicle type that is provided in the portable unit and that sets transponder-side vehicle type information indicating the vehicle type of the vehicle. Information setting means, provided on any of the vehicle side and the portable unit,
A determination unit configured to determine whether the vehicle-side vehicle type information held by the vehicle-side vehicle type information holding unit and the transponder-side vehicle type information set in the transponder-side vehicle type information setting unit correspond to each other. When the determination unit determines that the vehicle-side vehicle type information and the transponder-side vehicle type information correspond to each other, the holder and the portable unit attached to the holder function as the vehicle transponder unit. The authentication device for a transponder unit for a vehicle, wherein the authentication device is configured to permit the following. 18. A plurality of storage means provided on one of the vehicle side and the portable section, for storing one of the vehicle side vehicle type information and the transponder side vehicle type information, And at least one of the plurality of storage units, the at least one of the plurality of storage units corresponding to a vehicle type of the vehicle indicated by the other of the vehicle-side vehicle type information and the transponder-side vehicle type information. An access unit that reads one of the vehicle-side vehicle type information and the transponder-side vehicle type information from the storage unit, and any one of the vehicle-side vehicle type information and the transponder-side vehicle type information, Of the plurality of storage units, each of the at least one storage unit corresponding to the vehicle type of the vehicle indicated by any one of the vehicle-side vehicle type information and the transponder-side vehicle type information The authentication device for a transponder unit for a vehicle according to claim 17, wherein the authentication device is stored. 19. The vehicle according to claim 19, wherein the plurality of storage units are provided in the portable unit, and the at least one of the plurality of storage units according to the vehicle type of the vehicle indicated by the transponder-side vehicle type information.
The responder-side vehicle type information is stored in two storage means,
The access unit reads the transponder-side vehicle type information from the at least one storage unit corresponding to the vehicle type of the vehicle indicated by the vehicle-side vehicle type information among the plurality of storage units, and sets the transponder-side vehicle type information setting unit 19. The authentication apparatus for a transponder unit for a vehicle according to claim 18, wherein said transponder-side vehicle type information read from said at least one storage means by said access means is set. 20. A vehicle provided on one of the vehicle side and the portable part, wherein one of the vehicle side vehicle type information and the transponder side vehicle type information corresponds to the vehicle type of the vehicle indicated by the one. From storage means stored in at least one address location, and at least one address location in the storage means corresponding to the vehicle type of the vehicle indicated by one of the vehicle-side vehicle type information and the transponder-side vehicle type information, 20. The authentication apparatus for a transponder unit for a vehicle according to claim 17, further comprising a second access unit that reads out one of the vehicle-side vehicle type information and the transponder-side vehicle type information. 21. The storage unit is provided in the portable unit, and the response unit is provided in at least one address location of the storage unit according to the vehicle type indicated by the transponder-side vehicle type information in the storage unit. Device-side vehicle type information is stored, and the second access unit stores the transponder-side vehicle type information from the at least one address location corresponding to the vehicle type of the vehicle indicated by the vehicle-side vehicle type information in the storage unit. 21. The transponder unit for a vehicle according to claim 20, wherein the transponder-side vehicle type information read out by the second access unit from at least one portion of the storage unit is set in the read-out unit. Authentication device. 22. A transponder side that is provided on one of the vehicle side and the portable part and that generates the transponder-side vehicle type information based on the vehicle-side vehicle type information held by the vehicle-side vehicle type information holding means. 2. The transponder-side vehicle type information generated by the transponder-side vehicle type information generating unit is set in the transponder-side vehicle type information setting unit.
22. The authentication device for a transponder unit for a vehicle according to 7, 18, 19, 20 or 21. 23. The transponder-side vehicle type information generating unit includes: an encrypted data holding unit that holds encrypted data; and the vehicle-side vehicle type information holding unit that stores the encrypted data held by the encrypted data holding unit. Encryption means for encrypting the vehicle-side vehicle type information to be held, wherein the transponder-side vehicle type information setting means includes the vehicle-side vehicle type information encrypted by the encryption means with the encrypted data. Is set as the transponder-side vehicle type information, and the determination unit determines the original vehicle-side vehicle type information before encryption from the vehicle-side vehicle type information encrypted by the encryption unit with the encrypted data. Decoding data holding means for holding the decoded data of the responder-side vehicle type information set in the responder-side vehicle type information setting means; Decoding means for decoding by data, the decoding means decoding the transponder-side vehicle type information using the decoded data, and the vehicle-side vehicle type held by the vehicle-side vehicle type information holding means. The vehicle transponder unit according to claim 22, wherein when it is determined that the information corresponds, the holder and the portable unit mounted on the holder are allowed to function as the vehicle transponder unit. Authentication device. 24. An information signal between a transponder unit for a vehicle, which is configured by mounting a portable unit detachably mounted on the holder to a holder provided non-removably on the vehicle, and the outside of the vehicle. A device for performing authentication between the portable unit attached to the holder and the vehicle side when performing the payment processing of various charges related to the vehicle, by wirelessly transmitting and receiving A transponder-side vehicle type information setting unit in which transponder-side vehicle type information indicating a vehicle type of the vehicle is provided; and
Vehicle type determination information, which is given to the vehicle transponder unit by the information signal from outside the vehicle and indicates the vehicle type determined outside the vehicle, is set in the vehicle type information setting means on the transponder side. A second determining unit that determines whether the vehicle type information corresponds to the transponder-side vehicle type information, wherein the second determining unit determines that the vehicle type determining information corresponds to the transponder-side vehicle type information, An authentication device for a transponder unit for a vehicle, wherein a holder and the portable unit mounted on the holder are allowed to function as the transponder unit for a vehicle. 25. A plurality of storage units provided in the portable unit and storing the transponder-side vehicle type information, and a plurality of storage units provided in one of the vehicle side and the portable unit, A third access unit that reads out the transponder-side vehicle type information from at least one of the storage units corresponding to the vehicle type of the vehicle indicated by the vehicle type determination information. In the storage unit, the response unit vehicle type information is stored in the at least one storage unit corresponding to the vehicle type of the vehicle indicated by the transponder-side vehicle type information, and the transponder-side vehicle type information setting unit includes the third access unit. 25. The authentication apparatus for a transponder unit for a vehicle according to claim 24, wherein the transponder-side vehicle type information read from the at least one storage unit is set. 26. A storage means provided in the portable unit, wherein the transponder-side vehicle type information is stored in at least one address location corresponding to the vehicle type indicated by the transponder-side vehicle type information, and the vehicle type A fourth access unit that reads the transponder-side vehicle type information from at least one address location of the storage unit that corresponds to the vehicle type of the vehicle indicated by the determination information, wherein the transponder-side vehicle type information setting unit includes:
26. The authentication apparatus for a transponder unit for a vehicle according to claim 24, wherein the transponder-side vehicle type information read from at least one portion of the storage unit by the fourth access unit is set. 27. A vehicle-side vehicle type information holding means provided on the vehicle side and holding vehicle-side vehicle type information indicating a vehicle type of the vehicle, and the vehicle provided on one of the vehicle side and the portable portion, Responder-side vehicle type information generating means for generating the responder-side vehicle type information based on the vehicle-side vehicle type information held by the side-vehicle type information holding means, wherein the response generated by the responder-side vehicle type information generating means is provided. 26. The vehicle type information is set in the transponder type information setting means.
Or the authentication device for a transponder unit for a vehicle according to 26. 28. The transponder-side vehicle type information generating unit includes: an encrypted data holding unit that holds encrypted data; and the vehicle-side vehicle type information holding unit that stores the encrypted data held by the encrypted data holding unit. Encryption means for encrypting the vehicle-side vehicle type information to be held, wherein the transponder-side vehicle type information setting means includes the vehicle-side vehicle type information encrypted by the encryption means with the encrypted data. Is set as the transponder-side vehicle type information, and the second determination unit converts the original vehicle-side vehicle type information before encryption from the vehicle-side vehicle type information encrypted by the encryption unit with the encrypted data. Decoding data holding means for holding the decoded data to be determined, and the decryption data holding means holding the responder-side vehicle type information set in the responder-side vehicle type information setting means. Decoding means for decoding with the decoded data, the decoding means decoding the transponder-side vehicle type information with the decoded data, and the vehicle type determination information held by the vehicle type determination information holding means. 28. The transponder unit for a vehicle according to claim 27, wherein when it is determined that the information corresponds, the holder and the portable unit mounted on the holder are allowed to function as the transponder unit for the vehicle. Authentication device. 29. The contents of the vehicle-side vehicle type information held by the vehicle-side vehicle type information holding means provided on one of the vehicle side and the portable portion, while the portable portion is mounted on the holder. The transponder-side vehicle type information generating unit further includes a vehicle type information updating unit that updates the vehicle-side vehicle type information each time the vehicle type information updating unit updates the vehicle-side vehicle type information.
The transponder-side vehicle type information is generated based on the updated vehicle-side vehicle type information, and the transponder-side vehicle type information set in the transponder-side vehicle type information setting unit is the transponder-side vehicle type information generating unit. The vehicle transponder according to claim 22, wherein the transponder-side vehicle type information is updated to the latest transponder-side vehicle type information each time the transponder-side vehicle type information is generated based on the updated vehicle-side vehicle type information. Unit authentication device. 30. A change that is provided on one of the vehicle side and the portable portion and detects a change in the degree of transmission and reception of the information signal performed between the vehicle transponder unit and the outside of the vehicle. The vehicle type information updating unit further includes a detecting unit, and the vehicle type information updating unit is configured to control the vehicle type at a frequency corresponding to a change in the degree of transmission and reception of the information signal between the vehicle transponder unit detected by the change detecting unit and the outside of the vehicle. 30. The authentication apparatus for a transponder unit for a vehicle according to claim 29, wherein the content of the side vehicle type information is updated. 31. An information signal between a transponder unit for a vehicle, which is configured by mounting a portable unit detachably mountable on the holder on a holder provided non-removably on the vehicle, and the outside of the vehicle. A device for performing authentication between the portable unit attached to the holder and the vehicle side when performing the payment processing of various charges related to the vehicle, A vehicle-side identification information holding unit that is provided and holds vehicle-side identification information that identifies the vehicle; an encryption data holding unit that is provided in one of the vehicle and the portable unit and holds encryption data; The vehicle-side specific information held by the vehicle-side specific information holding unit is encrypted by the encrypted data held by the encrypted data holding unit provided in one of a vehicle and the portable unit. A second encrypting unit; a transponder-side specific information setting provided in the portable unit, wherein the vehicle-side specific information encrypted with the encrypted data by the second encrypting unit is set as a transponder-side specific information; Means, provided on one of the vehicle and the portable unit, wherein the second encrypting means encrypts the vehicle-side identifying information with the encrypted data from the vehicle-side identifying information before encryption. Decoding data holding means for holding the decoding data for calculating the, the transponder-side identification information provided in any one of the vehicle and the portable unit, and set in the transponder-side identification information setting means A second decoding unit for decoding with the decoded data held by the decoded data holding unit; and a second decoding unit provided in one of the vehicle and the portable unit, wherein the second decoding unit is configured to perform the decoding. A third determination unit that determines whether or not the transponder-side identification information decoded by data and the vehicle-side identification information held by the vehicle-side identification information holding unit correspond to each other; When the third determination unit determines that the transponder-side identification information decrypted by the above and the vehicle-side identification information held by the vehicle-side identification information storage unit correspond to each other, the holder is attached to the holder. The authentication device for a transponder unit for a vehicle, wherein the portable unit is allowed to function as the transponder unit for the vehicle. 32. The authentication apparatus for a transponder unit for a vehicle according to claim 31, wherein the vehicle-side identification information and the transponder-side identification information are vehicle type information for specifying a vehicle type of the vehicle. 33. The contents of the vehicle-side identification information provided on one of the vehicle side and the portable unit, and held by the vehicle-side identification information holding unit while the portable unit is mounted on the holder. The second encryption means encrypts the vehicle-side identification information each time the specific-information updating means updates the vehicle-side identification information, and further includes the transponder-side identification information. The responder-side identification information set in the setting unit is updated to the latest responder-side identification information every time the second encryption unit encrypts the updated vehicle-side identification information. 31 or 32
An authentication device for a transponder unit for a vehicle according to the above. 34. A change that is provided on one of the vehicle side and the portable unit and detects a change in the degree of transmission and reception of the information signal between the vehicle transponder unit and the outside of the vehicle. The specific information updating means further comprises a detecting means, wherein the specific information updating means is configured to detect the change in the degree of transmission and reception of the information signal between the vehicle transponder unit and the outside of the vehicle detected by the change detecting means. The authentication device for a transponder unit for a vehicle according to claim 33, wherein the content of the side identification information is updated.