JP2005231592A - Vehicle theft preventing device and vehicle theft preventing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To promptly release use restriction of a stolen vehicle subjected to vehicle use restriction such as prohibiting of engine restart after recovery of the vehicle, concerning a vehicle theft preventing device and a vehicle theft preventing system. <P>SOLUTION: When a key side identification code of a vehicular key inserted in a key cylinder matches a registered identification code stored on a vehicle side, engine start is permitted. When theft information is given from a center according to an invalidation request of the vehicular key from a proper vehicle user having the vehicle stolen, the registered identification code corresponding to all vehicular keys authentically registered in the vehicle so as to prohibit engine start is made to be invalid. Then, the proper vehicle user inserts a spare key into the key cylinder of the stolen vehicle and requests releasing of engine start prohibition, thereby the release request information is given from the center. In that case, the key side identification code of the vehicular key inserted in the key cylinder is registered on the vehicle side as the registered identification code. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vehicle antitheft device and a vehicle antitheft system, and more particularly to a vehicle that permits vehicle use, such as engine start, when an authentication code between a vehicle key and a vehicle matches, The present invention relates to a vehicle antitheft device and a vehicle antitheft system that invalidates an authentication code registered on the vehicle side so that use of the vehicle is restricted / prohibited in response to a request from an authorized vehicle user.

Conventionally, when a theft of the vehicle itself is reported from the mobile phone of a legitimate vehicle user to the center, the theft for vehicles that transmits a theft signal prohibiting engine restart from the center to the vehicle involved in the theft A prevention system is known (see, for example, Patent Document 1). In this system, when a theft signal is received by the vehicle, the restart of the engine of the vehicle is prohibited thereafter, so that it is difficult for the theft to take away the vehicle. Therefore, according to the above-described conventional system, it is possible to relatively easily collect the stolen vehicle to a proper owner or user.
JP 2002-59812 A

  However, in the above conventional system, after the engine restart of the stolen vehicle is prohibited, the prohibition of the engine restart is lifted even when the authorized user enters the stage of collecting the stolen vehicle from the neglected place. I can't. For this reason, a legitimate user can cancel the prohibition by moving the stolen vehicle tow truck and bringing it to a vehicle dealer, etc., but it is difficult to start the engine as soon as possible after collection. is there.

  The present invention has been made in view of the above-described points, and the anti-theft for vehicles that can quickly cancel the use restriction of a stolen vehicle subjected to vehicle use restriction such as prohibition of engine restart after the vehicle is collected. An object is to provide a device and a vehicle antitheft system.

  The object is to permit use of the vehicle when the portable device side authentication code of the portable device that can be carried by the vehicle user matches the vehicle side authentication code registered on the vehicle side. A vehicle theft comprising: a use permitting means that disables the vehicle-side authentication code to limit vehicle use by the use permitting means when a vehicle theft signal transmitted from the information center is received The portable device side of the portable device carried by the authorized vehicle user in response to a request from the authorized vehicle user after the vehicle-side authentication code is invalidated by the invalidating means This is achieved by a vehicle antitheft device comprising code registration means for registering an authentication code on the vehicle side as the vehicle side authentication code.

  Further, the above object is to use the vehicle when the portable device-side authentication code of the portable device that can be carried by the vehicle user matches the vehicle-side authentication code registered on the vehicle side. A vehicle including: a use permitting unit that authorizes the vehicle and an invalidating unit that invalidates the vehicle-side authentication code so as to limit vehicle use by the use permitting unit when a vehicle theft signal transmitted from the information center is received. An antitheft device for use in a portable device carried by a legitimate vehicle user in response to a request from a legitimate vehicle user after the invalidation means invalidates the vehicle-side authentication code This is achieved by a vehicle antitheft device comprising specific code invalidation release means for canceling invalidation of the vehicle side authentication code that matches the machine side authentication code.

  In the inventions according to claims 1 and 4, when a request from a legitimate vehicle user is made after the vehicle-side authentication code for permitting use of the vehicle is invalidated, the portable device possessed by the portable device carried by the person The machine-side authentication code is registered on the vehicle side as a vehicle-side authentication code for permitting use of the vehicle, or, among the vehicle-side authentication codes invalidated, the portable-side authentication code of the portable machine carried by the person The invalidation of the matching vehicle side authentication code is released. If such re-registration or cancellation of invalidation is performed, the authentication code for the vehicle will be the same according to the portable device thereafter, so the restriction on vehicle use will be released even where the stolen vehicle is left. This permission can be realized. Therefore, according to the present invention, it is possible to quickly cancel the use restriction of a stolen vehicle subjected to vehicle use restriction after the vehicle is collected.

  In this case, as described in claim 2, in the vehicle theft device according to claim 1, the code registration means performs code registration after the invalidation means invalidates the vehicle-side authentication code. When the vehicle receives a code registration request signal transmitted from the center that has authenticated that the requesting person is an authorized vehicle user, the portable device side authentication of the portable device carried by the authorized vehicle user If the code is registered on the vehicle side as the vehicle-side authentication code, and the vehicle anti-theft device according to claim 4, the specific code invalidation canceling means includes: After the vehicle-side authentication code is invalidated by the invalidating means, the invalidation cancellation request signal transmitted from the center that has authenticated that the person who requests invalidation cancellation is an authorized vehicle user. Is received by the vehicle, the invalidation of the vehicle side authentication code that matches the portable device side authentication code of the portable device carried by the authorized vehicle user is canceled. Since re-registration or cancellation of invalidation is performed when the vehicle side receives a request signal transmitted from the center after it is authenticated at the center that the person who requests it is an authorized vehicle user, There is no need to provide a vehicle with a device for authenticating that the person who requests the re-registration or invalidation cancellation is an authorized vehicle user, and an inexpensive system for canceling the use restriction of stolen vehicles is constructed. Can do.

  According to a third aspect of the present invention, in the vehicle antitheft device according to the first aspect, the code registration means is mounted on the vehicle after the invalidation means invalidates the vehicle-side authentication code. When it is authenticated by the authenticated means that the person who requests code registration is an authorized vehicle user, the portable device side authentication code of the portable device carried by the authorized vehicle user is changed to the vehicle side authentication code. And as described in claim 6, in the vehicle antitheft device according to claim 4, the specific code invalidation release means is connected to the vehicle side by the invalidation means. After the authentication code is invalidated, when the person who requests the cancellation of the invalidation is authenticated by the authenticating means mounted on the vehicle, the authorized vehicle user carries it. Carrying If the invalidation of the vehicle-side authentication code that matches the portable-device-side authentication code of the machine is released, the person who requests the re-registration or invalidation cancellation of the vehicle-side authentication code is an authorized vehicle. Since it is performed when the user is authenticated by the authentication means mounted on the vehicle, it is not necessary to communicate with the information center for such authentication, and in a place where communication with the information center is restricted Even the use restriction of stolen vehicles can be released.

  According to a seventh aspect of the present invention, in the vehicle antitheft device according to any one of the first to sixth aspects, the use permission means permits the engine to start and the invalidation means includes the engine The vehicle-side authentication code may be invalidated to prohibit starting of the vehicle.

  Further, the above object is to provide an information center for transmitting a vehicle theft signal to a vehicle in accordance with a request from a legitimate vehicle owner, and a portable device possessed by a portable device that can be carried by a vehicle user. Use permission means for permitting use of the vehicle when the machine-side authentication code matches the vehicle-side authentication code registered on the vehicle side, and the use permission means when the vehicle theft signal transmitted from the information center is received An antitheft device for a vehicle mounted on a vehicle, the invalidation means for invalidating the vehicle side authentication code to restrict vehicle use by the vehicle, wherein the information center Authentication means for authenticating whether or not a person requesting code registration is an authorized vehicle user, and when the authentication means confirms that the person is an authorized vehicle user, Request signal transmitting means for transmitting a code registration request signal, and the vehicle antitheft device is transmitted from the information center after the vehicle-side authentication code is invalidated by the invalidating means. The vehicle theft provided with code registration means for registering the portable device side authentication code of the portable device carried by the authorized vehicle user on the vehicle side as the vehicle side authentication code when the code registration request signal is received by the vehicle Achieved by a prevention system.

  In addition, as described in claim 9, the above object is achieved by an information center that transmits a vehicle theft signal to a vehicle in accordance with a request from a legitimate vehicle owner, and a portable device that a portable user can carry. Use permission means for permitting use of the vehicle when the machine-side authentication code matches the vehicle-side authentication code registered on the vehicle side, and the use permission means when the vehicle theft signal transmitted from the information center is received An antitheft device for a vehicle mounted on a vehicle, the invalidation means for invalidating the vehicle side authentication code to restrict vehicle use by the vehicle, wherein the information center Authentication means for authenticating whether or not the person requesting cancellation of invalidation is an authorized vehicle user, and when the authentication means confirms that the person is an authorized vehicle user, Request signal transmitting means for transmitting an invalidation release request signal, and the vehicle antitheft device transmits the vehicle-side authentication code from the information center after the invalidation means has been invalidated. When the invalidation cancellation request signal is received by the vehicle, the specific code invalidation for canceling the invalidation of the vehicle side authentication code that matches the portable device side authentication code of the portable device carried by the authorized vehicle user This is achieved by a vehicle antitheft system having a release means.

  In the inventions according to claims 8 and 9, the information center transmits a vehicle theft signal to the vehicle in accordance with a request from the authorized vehicle owner. When receiving the vehicle theft signal transmitted from the information center, the vehicle-mounted vehicle antitheft device invalidates the vehicle-side authentication code for vehicle use permission / rejection. In addition, the information center authenticates whether the person who requests the code re-registration or invalidation cancellation is an authorized vehicle user, and if such authentication is obtained, the information registration request signal or invalidation is issued to the vehicle. Send a cancellation request signal. The in-vehicle antitheft device for vehicles is a portable device carried by a legitimate vehicle user when a request signal from the information center is received after invalidating the vehicle-side authentication code for permitting use of the vehicle. Is registered on the vehicle side as a vehicle-side authentication code for vehicle use permission / inhibition, or, among the invalidated vehicle-side authentication codes, a portable device carried by a portable device carried by an authorized vehicle user Cancel the invalidation of the vehicle-side authentication code that matches the machine-side authentication code. If such re-registration or cancellation of invalidation is performed, the authentication code for the vehicle will be the same according to the portable device thereafter, so the restriction on vehicle use will be released even where the stolen vehicle is left. This permission can be realized. Further, in such a system, it is not necessary to provide a vehicle with an apparatus for authenticating that a person who requests code re-registration or invalidation cancellation is an authorized vehicle user, and an inexpensive system for canceling the use restriction of a stolen vehicle Can be built.

  According to the first, fourth, and seventh aspects of the present invention, it is possible to quickly cancel the use restriction of a stolen vehicle subjected to vehicle use restriction after the vehicle is collected.

  According to the second and fifth and eighth and ninth aspects of the present invention, it is not necessary to provide the vehicle with a device for authenticating a person necessary for canceling the use restriction of the stolen vehicle. It is possible to construct a system that performs promptly later at low cost.

  According to the third and sixth aspects of the present invention, since it is not necessary to communicate with the information center in order to perform authentication of a person necessary for releasing the use restriction of the stolen vehicle, communication with the information center is possible. Even in places where the vehicle is restricted, the use restriction can be quickly released after the vehicle is collected.

Hereinafter, embodiments of the present invention will be described.
(First embodiment)

  FIG. 1 is a configuration diagram of a vehicle antitheft system that prevents theft of a vehicle according to a first embodiment of the present invention. As shown in FIG. 1, the vehicle antitheft system of this embodiment includes a vehicle antitheft device 10 mounted on a vehicle, and a portable terminal 12 carried by a regular vehicle user such as a vehicle owner or driver. And a center 14 as an infrastructure outside the vehicle.

  The vehicle antitheft device 10 determines whether the vehicle door is locked or unlocked when the ignition is turned off. As a result of the determination, if all the vehicle doors are locked when the ignition is turned off, Security mode for monitoring vehicle thefts such as tires, engines, and other vehicle parts, and items placed in the vehicle. On the other hand, if any vehicle door is unlocked, monitoring of vehicle thefts is canceled. To unset mode.

  The vehicle antitheft device 10 has a function of detecting an action performed when a vehicle is stolen in the security mode using various sensors and switches such as an inclination sensor and an intrusion sensor. When the vehicle antitheft device 10 detects a vehicle theft, the vehicle theft is reported to the center 14 using the communication device with the ID information of the own vehicle or the vehicle user attached. . When the center 14 receives a report on the vehicle theft from the vehicle antitheft device 10 mounted on the vehicle, the center 14 is authorized to correspond to the vehicle registered in advance based on the ID information included in the report information. The vehicle user is identified and the mobile terminal 12 carried by the authorized vehicle user is informed that the vehicle theft has been performed. When the mobile terminal 12 receives a report regarding the vehicle theft from the center 14, the mobile terminal 12 displays that fact on the display or outputs the sound from the speaker.

  Therefore, according to the system of the present embodiment, when a vehicle theft is performed, the vehicle theft prevention device 10 to the mobile terminal 12 of an authorized vehicle user via the center 14 relates to the vehicle theft. Since the notification is made, an authorized vehicle user can know that his / her vehicle has been stolen.

  Further, the vehicle antitheft device 10 includes an immobilizer electronic control unit (referred to as an immobilizer ECU) 16. An engine ECU 18 that controls the engine of the vehicle is connected to the immobilizer ECU 16. The immobilizer ECU 16 has a nonvolatile memory 20 that stores an authentication code corresponding to its own vehicle in advance. Hereinafter, the authentication code registered on the vehicle side is referred to as a registration authentication code. In addition, a plurality of vehicle keys 22 necessary for vehicle operations such as engine start and door locking / unlocking carried by the vehicle user are usually provided for one vehicle, and each has its own authentication code. (Hereinafter referred to as a key-side authentication code). The non-volatile memory 20 stores a plurality of registration authentication codes that match all the key-side authentication codes so as to correspond to the vehicle keys 22 respectively.

  The immobilizer ECU 16 generates a magnetic field around the key cylinder when the vehicle key 22 is inserted into the ignition key cylinder of the vehicle. When the vehicle key 22 detects a magnetic field generated around the key cylinder, it sends a key-side authentication code that it has. When the immobilizer ECU 16 receives a key-side authentication code transmitted from the vehicle key 22 inserted into the key cylinder after generating a magnetic field around the key cylinder, the immobilizer ECU 16 registers the received key-side authentication code and the memory 20 in advance. Authentication with the registered registration code. If the authentication codes match as a result of the authentication, a signal for permitting the engine to start is supplied to the engine ECU 18. When the engine ECU 18 receives the engine start permission signal from the immobilizer ECU 16, the engine ECU 18 permits the start of the vehicle engine.

  Therefore, according to the system of the present embodiment, when the regular vehicle key 22 having the authentication code registered on the vehicle side is inserted into the key cylinder, the engine is allowed to start, while the vehicle other than the regular vehicle key 22 is permitted. When the vehicle key 22 is inserted into the key cylinder, starting of the engine is prohibited, so that the vehicle can be prevented from being stolen by the duplicate key.

  The portable terminal 12 attaches the ID information of its own vehicle user to the theft notification requesting the invalidity of the vehicle key 22 in which the authentication code is registered on the vehicle side corresponding to the portable terminal 12 by a predetermined code input operation. A function to be performed toward the center 14. In addition, the vehicle antitheft device 10 includes a communication device 24 connected to the immobilizer ECU 16. The communication device 24 is connected to the center 14 described above via a communication network or the like.

  When the center 14 receives a theft notification requesting the invalidation of the vehicle key 22 that has been authenticated and registered on the own vehicle side from the mobile terminal 12, first, the center 14 requests the theft notification from the ID information included in the notification information. Authenticate whether the person is a legitimate vehicle user, and if the authentication is matched and complete, all vehicle keys 22 registered in the vehicle for that vehicle should be revoked Send a theft signal to indicate When receiving the theft signal transmitted from the center 14, the vehicle communication device 24 supplies the information to the immobilizer ECU 16. When the immobilizer ECU 16 receives a theft signal from the communication device 24, the immobilizer ECU 16 invalidates all the vehicle keys 22 that have been authenticated and registered in the vehicle, that is, all the registration authentication codes in the nonvolatile memory 20, and causes the key cylinder to operate the vehicle. Even if the vehicle key 22 is inserted, the verification of the authentication code with the vehicle side is not performed, or even if such verification is performed, it is determined that the authentication code does not match, and the engine start is prohibited.

  Therefore, in the system of the present embodiment, when the vehicle user learns that his / her vehicle has been stolen by a report from the center 14, all the authentication registrations of the vehicle from the portable terminal 12 to the center 14 are made. If the invalidation of the vehicle key 22 is requested, since the engine start is not permitted even if the regular vehicle key 22 is inserted into the key cylinder, the vehicle theft person carries the regular vehicle key 22. Even so, it is difficult to continue the theft of the vehicle itself, and the stolen vehicle can be returned to the authorized vehicle user relatively easily.

  Next, the characteristic operation of the vehicle antitheft system of this embodiment will be described.

  In this embodiment, as described above, when invalidation of all the vehicle keys 22 registered in the vehicle is requested, the engine key is subsequently inserted into the key cylinder even if the vehicle key 22 registered in the authentication is inserted into the key cylinder. Since starting is prohibited, it is difficult to continue theft of the vehicle itself. For this reason, when the vehicle reaches the state where the engine start is prohibited in this way, the vehicle theft person has to leave the vehicle and leave it.

  Here, when the engine start is prohibited as described above and the stolen vehicle is left unattended, when the stolen vehicle has been left unattended, when a legitimate vehicle user tries to collect the self-running vehicle, it still remains If all the legitimate vehicle keys 22 remain disabled, the vehicle cannot be driven. Accordingly, the vehicle antitheft system according to the present embodiment allows the engine to be started by canceling the start prohibition at the intention of the authorized vehicle user after the engine start is prohibited by the invalidation of the vehicle key 22. Yes.

  FIG. 2 shows a flowchart of an example of a control routine executed in the vehicle antitheft system of the present embodiment in order to realize the above function. In the system of the present embodiment, when a legitimate vehicle user registered as a user in the center 14 learns that his / her own vehicle has been stolen by the above-described method, the vehicle is stolen by the portable terminal 12 carried by himself / herself. Enter a vehicle theft code indicating that the error occurred. When a vehicle theft code is input, the portable terminal 12 adds a vehicle user ID information to a theft report requesting the invalidation of the vehicle key 22 that is registered for authentication on the vehicle side corresponding to the code. Then, the process is performed toward the center 14 (step 50).

  When the center 14 receives a theft report from the mobile terminal 12 (step 52), first, whether the requester who made the theft report based on the ID information included in the report information is an authorized vehicle user. No is authenticated (step 54). If the authentications match, all vehicle keys 22 (specifically, registration authentication codes) registered in the vehicle for the vehicle user's vehicle should be invalidated. An instructed theft signal is transmitted (step 56).

  The vehicle antitheft device 10 mounted on the vehicle is authenticated and registered on the vehicle side (specifically, the non-volatile memory 20) when the communication device 24 receives the theft signal from the center 14 (step 58). All registered authentication codes are invalidated, and even if the vehicle key 22 for vehicle operation is inserted into the key cylinder, the authentication code does not match or does not match the vehicle side and the vehicle key 22 It is determined that the engine is not to be started, and engine start is prohibited (step 60).

  According to the above processing, the engine can be started even if the authorized vehicle key 22 is inserted into the key cylinder after the authorized vehicle user requests invalidation of all the vehicle keys 22 registered in the vehicle. Since permission is avoided, it is difficult to continue theft of the vehicle itself even if the vehicle thefter carries the regular vehicle key 22. In this case, the stolen vehicle is abandoned on the road.

  Next, when a stolen vehicle that has been neglected as described above is found, the authorized vehicle user can use the authorized spare vehicle key 22 or a newly created vehicle that has not been stolen at the location where the vehicle is stolen. When the vehicle door is locked, the vehicle door 22 is unlocked with the vehicle key 22. Then, the vehicle key 22 is inserted into the ignition key cylinder of the vehicle, and a release code indicating that the prohibition of engine start is released is input to the portable terminal 12 carried by itself. When the release code is input, the portable terminal 12 sends a release request report requesting release of prohibition of engine restart to the center 14 with the vehicle user ID information in accordance with the code (step) 62).

  When the center 14 receives the release request notification from the mobile terminal 12 (step 64), first, the requester who has made the release request notification based on the ID information included in the notification information is an authorized vehicle user. It is authenticated whether or not there is (step 66). If the authentication matches, a cancel request signal is transmitted to instruct the vehicle user's vehicle to cancel the prohibition of engine restart (step 68).

  The vehicle antitheft device 10 mounted on the vehicle invalidates all the registration authentication codes registered in the non-volatile memory 20 and prohibits starting of the engine. When the request signal is received (step 70), first, a process of reading the key side authentication code of the vehicle key 22 inserted into the ignition key cylinder is executed (step 72). Specifically, when the immobilizer ECU 16 invalidates the registration authentication code and is notified of reception of the release request signal from the communication device 24, the key side authentication of the vehicle key 22 inserted into the key cylinder is performed. A magnetic field is generated around the key cylinder to request the transmission of the code, and the key side authentication code transmitted from the vehicle key 22 is received. Next, the key authentication code received and read is registered in the nonvolatile memory 20 as a registration authentication code, or the key read and received among all the registration authentication codes invalidated by the above-described method. The registration authentication code corresponding to the side authentication code is deactivated and only the registration authentication code is validated (step 74).

  According to the routine shown in FIG. 2, all registration authentication codes registered for authentication for engine start permission / inhibition in the vehicle antitheft device 10 have been invalidated by a theft notification from an authorized vehicle user. Later, when a cancellation request notification is made from the person who boarded the vehicle, if the person who made the cancellation request is an authorized vehicle user, it was carried by the authorized user and inserted into the key cylinder. A vehicle in which the key-side authentication code of the vehicle key 22 is registered on the vehicle side as the above-mentioned registration authentication code, or among all the registered authentication codes invalidated, the vehicle is carried by the authorized user and inserted into the key cylinder The invalidation of the registration authentication code that matches the key-side authentication code of the key 22 is cancelled.

  In this way, when the vehicle key 22 inserted into the key cylinder at the time of the release request notification is re-registered or invalidated and released from the registration authentication code for permitting or not starting the engine in the non-volatile memory 20 of the vehicle, the engine start thereafter. Sometimes, if the vehicle key 22 is used, the authentication code between the vehicle key 22 and the vehicle side will always match, so even in the place where the stolen vehicle is left, the engine start prohibition is canceled and the permission is granted. It can be realized. In this regard, when a regular spare vehicle key 22 remains at hand after the vehicle is stolen or when a new vehicle key 22 is created, the authorized vehicle user possesses the vehicle key 22, By inserting into the key cylinder of the found stolen vehicle and issuing a release request notification from the mobile terminal 12 to the center, the stolen own vehicle can be operated by starting the engine using the vehicle key 22 thereafter. It becomes possible. Therefore, according to the system of the present embodiment, all registration authentication codes are invalidated after the theft, and the vehicle use restriction of the stolen vehicle in which the vehicle use is restricted (specifically, the engine start is prohibited). (Cancellation of engine start prohibition, that is, return to permission to start engine) can be performed promptly after the vehicle is recovered, and the vehicle can be self-propelled and moved in a short time after the discovery of the stolen vehicle. .

  In this embodiment, re-registration or invalidation cancellation of the registration authentication code for permitting engine start on the vehicle side is not performed for all the vehicle keys 22 for which the registration authentication code has been invalidated, and a cancellation request is notified. This is done only for the vehicle key 22 that is inserted into the key cylinder. In this case, after the abandoned stolen vehicle is discovered, the vehicle key 22 that is permitted to drive the vehicle is limited to those carried by a legitimate vehicle user. For this reason, according to the system of the present embodiment, after the stolen vehicle is discovered, it is avoided that the engine start is permitted and the vehicle operation is permitted by the vehicle key 22 still possessed by the theft who has stolen the vehicle. Therefore, it is possible to prevent new vehicle theft.

  In this embodiment, the registration registration code re-registration or invalidation cancellation for permitting engine start on the vehicle side is received at the center 14 from the mobile terminal 12 and is included in the notification information. This is performed when the person who made the cancellation request notification from the ID information is authenticated as a legitimate vehicle user, and after the cancellation request signal is transmitted from the center 14, the vehicle side receives the cancellation request signal. . In this case, the authentication of whether or not the person who requests re-registration or cancellation of invalidation of the registration authentication code is an authorized vehicle user is performed at the center 14 where the request is reported from the mobile terminal 12, and The cancellation request signal transmitted from the center 14 after the authentication is completed is received by the communication device 24 of the in-vehicle vehicle antitheft device 10.

  As described above, when the center 14 receives a theft notification requesting the invalidation of the vehicle key 22 from the portable terminal 12, the center 14 transmits the theft signal to the vehicle, and the ID information included in the theft notification information. And an authentication function for authenticating whether or not the requester who has made such a theft report is an authorized vehicle user. Further, the communication device 24 of the vehicle antitheft device 10 has a reception function of receiving a vehicle theft signal transmitted from the center 14.

  In this regard, in the system of the present embodiment, the authentication of whether or not the person who made the cancellation request notification about the re-registration or invalidation cancellation of the registration authentication code described above is an authorized vehicle user, and such The cancellation request signal after the authentication can be received using a function provided to invalidate the registration authentication code on the vehicle side. For this reason, according to the system of the present embodiment, a device for authenticating a person necessary for canceling the engine start prohibition of a stolen vehicle and a device for receiving a cancel request signal from the center 14 are completely new on the vehicle side. Therefore, a system for re-registering or canceling invalidation of the registration / authentication code for permitting engine start is constructed at low cost.

  By the way, in the first embodiment described above, the vehicle key 22 is patented in the “portable device” described in the claims, the center 14 is registered in the “information center” described in the claims, and the key-side authentication code is patented. The registration authentication code corresponds to the “vehicle side authentication code” described in the claims, and the registration authentication code corresponds to the “vehicle side authentication code” described in the claims.

In the first embodiment, the immobilizer ECU 16 of the vehicle antitheft device 10 previously registers in the nonvolatile memory 20 the key-side authentication code transmitted from the vehicle key 22 inserted into the ignition key cylinder of the vehicle. When the registered authentication code matches, the “use permission means” described in the claims is supplied to the engine ECU 18 by allowing the engine ECU 18 to start the engine. The “invalidating means” described in the claims by executing the process of “Claim” and the “code registration means” and “specific code invalidation releasing means described in the claims by executing the process of step 74 Are realized, and the center 14 executes the process of step 66 to claim Is "authentication means" described in circumference, the claimed by executing the process of step 68 "request signal transmitting means" it is realized respectively.
(Second embodiment)

  FIG. 3 shows a block diagram of a vehicle antitheft system that is a second embodiment of the present invention. In FIG. 3, the same components as those shown in FIG. 1 are denoted by the same reference numerals, and the description thereof is omitted or simplified. That is, as shown in FIG. 3, the vehicle antitheft system of this embodiment includes a vehicle antitheft device 100 mounted on the vehicle.

  The vehicle antitheft device 100 has the same function as the vehicle antitheft device 10 of the first embodiment described above, and also includes a user authentication device 102 connected to the immobilizer ECU 16. The user authentication device 102 has a memory for storing a password in advance and an input switch provided in the vehicle that is input by a passenger on the vehicle. The user authentication device 102 determines whether or not the input person is an authorized vehicle user based on whether or not the input code specified by the input operation of the input switch matches the personal identification code stored in the memory. Certify. The authentication result by the user authentication device 102 is supplied to the immobilizer ECU 16. The immobilizer ECU 16 determines whether or not the input person existing in the vehicle is an authorized vehicle user based on the authentication result by the user authentication device 102.

  Next, the characteristic operation of the vehicle antitheft system of this embodiment will be described. FIG. 4 shows a flowchart of an example of a control routine executed in the vehicle antitheft system of this embodiment. In FIG. 4, steps that perform the same processing as in the routine shown in FIG. 2 are given the same reference numerals, and descriptions thereof are omitted or simplified.

  In other words, in the system of the present embodiment, when a stolen vehicle that has been invalidated and all registered authentication codes have been invalidated and engine start is prohibited is found, a legitimate vehicle user can place the vehicle in the location where the vehicle is left. Carrying a legitimate spare vehicle key 22 that has not been stolen at the time of vehicle theft or a newly created vehicle key 22 and when the vehicle door is locked, the vehicle key 22 is used to unlock the vehicle door. . Then, the vehicle key 22 is inserted into the ignition key cylinder of the vehicle (step 150), and a code is input to the input switch of the user authentication device 102. When a code is input to the input switch, the user authentication device 102 determines whether or not the input code matches a personal identification code stored in the memory in advance, so that the input person is an authorized vehicle user. It is authenticated whether or not there is (step 152), and the authentication result is supplied to the immobilizer ECU 16.

  When the input person is authenticated as an authorized vehicle user, the immobilizer ECU 16 first executes a process of reading the key side authentication code of the vehicle key 22 inserted into the ignition key cylinder (step 154). Specifically, after invalidating the registration authentication code, when it is determined that the person who entered the user authentication device 102 is a legitimate vehicle user, the key of the vehicle key 22 inserted into the key cylinder A magnetic field is generated around the key cylinder to request the transmission of the side authentication code, and the key side authentication code transmitted from the vehicle key 22 is received. Then, the immobilizer ECU 16 registers the received and read key-side authentication code in the nonvolatile memory 20 as the registration authentication code, or receives all of the registration authentication codes invalidated by the above method. The invalidation of the registration authentication code that matches the read key-side authentication code is canceled and only the registration authentication code is validated (step 156).

  According to the routine shown in FIG. 4, all the registration authentication codes registered for authentication for engine start permission / inhibition in the vehicle antitheft device 100 are invalidated by a theft report from a legitimate vehicle user. After that, if the person who gets in the vehicle is an authorized vehicle user based on the authentication result of the user authentication device 102 to which the code is entered, the vehicle key carried by the authorized user and inserted into the key cylinder 22 is registered on the vehicle side as the above-mentioned registration authentication code, or the vehicle key 22 carried by the authorized user and inserted into the key cylinder among all the registration authentication codes invalidated. The invalidation of the registration authentication code that matches the key-side authentication code of the is canceled.

  When this processing is performed, as in the first embodiment described above, if the vehicle key 22 is used thereafter when the engine is started, the authentication code between the vehicle key 22 and the vehicle side will always match. Even in the place where the stolen vehicle is left unattended, it is possible to cancel the prohibition of engine start and realize the permission. In this regard, when a regular spare vehicle key 22 remains at hand after the vehicle is stolen or when a new vehicle key 22 is created, the authorized vehicle user possesses the vehicle key 22, By inserting into the key cylinder of the found stolen vehicle and inputting a code that matches the pre-stored password to the in-vehicle user authentication device 102, the stolen vehicle is subsequently referred to as the vehicle key. The engine can be started using the engine 22 and operated. Accordingly, even in the system of this embodiment, all registration authentication codes are invalidated after theft, and the engine start prohibition of the stolen vehicle in which vehicle use is restricted (specifically, engine start is prohibited) is canceled. That is, it is possible to return to the engine start permission promptly after collecting the vehicle, and it is possible to make the vehicle run and move within a short time after the discovery of the stolen vehicle.

  Also in this embodiment, re-registration or invalidation cancellation of the registration authentication code for engine start permission on the vehicle side is re-registration or invalidation cancellation for engine start permission on the vehicle side. It is not performed for all the vehicle keys 22 for which the registration authentication code has been invalidated, but only for the vehicle keys 22 that are inserted into the key cylinder when an input to the user authentication device 102 is performed. In this case, after the abandoned stolen vehicle is discovered, the vehicle key 22 that is permitted to drive the vehicle is limited to those carried by a legitimate vehicle user. For this reason, according to the system of the present embodiment, after the stolen vehicle is discovered, it is avoided that the engine start is permitted and the vehicle operation is permitted by the vehicle key 22 still possessed by the theft who has stolen the vehicle. Therefore, it is possible to prevent new vehicle theft.

  In this embodiment, the registration authentication code re-registration or invalidation cancellation for permission to start the engine on the vehicle side is performed by the code input person in the user authentication device 102 of the vehicle antitheft device 100 mounted on the vehicle. This is performed when it is verified that the user is a legitimate vehicle user. In this case, authentication of whether or not the person who requests re-registration of the registration authentication code or cancellation of invalidation is an authorized vehicle user is performed in the stolen vehicle. In this respect, in the system of the present embodiment, the mobile terminal 12 and the vehicle and the center 14 are authenticated to determine whether or not the person who requests re-registration of the registration authentication code or cancellation of the invalidation is an authorized vehicle user. The communication can be performed without communication connection, and it is not necessary to connect the mobile terminal 12 or the vehicle to the center 14 for such authentication. Therefore, according to the system of the present embodiment, even if the place where the stolen vehicle is left is a place where communication with the center 14 such as the back of the mountain is restricted (that is, outside the communication area such as the mobile terminal 12), The registration authentication code in the stolen vehicle can be re-registered or invalidated and the engine start prohibition of the stolen vehicle can be canceled.

  By the way, in said 2nd Example, immobilizer ECU16 of the antitheft apparatus 100 for vehicles performs the process of step 156 in the routine shown in the said FIG. 4, and is described in Claim 3 and 6 of a claim. The “code registration means” and “specific code invalidation release means” are realized.

  In the first and second embodiments described above, a legitimate vehicle user makes a vehicle theft notification requesting the center 14 to invalidate the vehicle key 22, and a theft signal is sent from the center 14 to the in-vehicle antitheft device 10. When it is transmitted, all vehicle keys 22 registered and registered in the vehicle are invalidated, and the engine start is prohibited as a vehicle use restriction thereafter. It is possible to do. On the other hand, a process that makes it difficult to continue running the vehicle by disabling the vehicle key 22 is performed. It is also possible to apply to a system that performs restriction, steering lock, etc.

  In the first and second embodiments, the engine start is permitted when the key-side authentication code of the vehicle key 22 as a portable device inserted into the ignition key cylinder matches the registration authentication code on the vehicle side. However, the present invention is not limited to the use of the engine as a vehicle use, for example, a vehicle door. It can also be applied to things related to locking and unlocking of windows, opening and closing of windows, and automatic opening and closing of vehicle doors.

  In the first and second embodiments described above, the authorized user uses the portable terminal 12 or the user in a state where the spare or new vehicle key 22 possessed by the authorized vehicle user is inserted into the key cylinder of the stolen vehicle that has been found. When a cancellation request is issued to the authentication device 102, re-registration or invalidation cancellation of the registration authentication code for engine start permission / inhibition on the vehicle side is realized. May be performed when the vehicle user inserts the spare or new vehicle key 22 into the key cylinder of the stolen vehicle within a predetermined time after making a release request to the mobile terminal 12 or the user authentication device 102. Good.

  Further, in the first and second embodiments described above, a system for reading the key-side authentication code from the vehicle key 22 inserted into the ignition key cylinder is employed, but the present invention is not limited to this. In addition, the present invention can be applied to a system that remotely reads the vehicle key 22 only by being carried by the vehicle user without inserting the vehicle key 22 into the key cylinder.

It is a block diagram of the system which prevents theft of the vehicle which is 1st Example of this invention. It is a flowchart of the control routine performed in the system of a present Example. It is a block diagram of the system which prevents theft of the vehicle which is 2nd Example of this invention. It is a flowchart of the control routine performed in the system of a present Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Antitheft device for vehicles 12 Portable terminal 14 Center 16 Immobilizer ECU
18 Engine ECU

Claims (9)

Use permission means for permitting use of the vehicle when the portable device side authentication code of the portable device that can be carried by the vehicle user matches the vehicle side authentication code registered on the vehicle side, and vehicle theft transmitted by the information center An antitheft device for a vehicle comprising: an invalidating means for invalidating the vehicle side authentication code so as to restrict vehicle use by the use permission means when a signal is received;
After the vehicle-side authentication code is invalidated by the invalidating means, a portable device-side authentication code of a portable device carried by the authorized vehicle user is issued on the vehicle side in response to a request from the authorized vehicle user. A vehicle antitheft device comprising code registration means for registering an authentication code on the vehicle side.   The code registration means is a code transmitted from the center that has authenticated that the person who requests the code registration is a legitimate vehicle user after the vehicle-side authentication code is invalidated by the invalidation means. 2. When a registration request signal is received by a vehicle, a portable device side authentication code of a portable device carried by the authorized vehicle user is registered on the vehicle side as the vehicle side authentication code. Anti-theft device for vehicles.   The code registration means authenticates that the person who requests code registration by the authentication means mounted on the vehicle is an authorized vehicle user after the vehicle-side authentication code is invalidated by the invalidation means. 2. The vehicle antitheft device according to claim 1, wherein, when it is done, the portable device side authentication code of the portable device carried by the authorized vehicle user is registered on the vehicle side as the vehicle side authentication code. Use permission means for permitting use of the vehicle when the portable device side authentication code of the portable device that can be carried by the vehicle user matches the vehicle side authentication code registered on the vehicle side, and vehicle theft transmitted by the information center An antitheft device for a vehicle comprising: an invalidating means for invalidating the vehicle side authentication code so as to restrict vehicle use by the use permission means when a signal is received;
After the vehicle-side authentication code is invalidated by the invalidating means, the portable device-side authentication code that matches the portable device-side authentication code of the portable device carried by the authorized vehicle user according to a request from the authorized vehicle user An antitheft device for a vehicle, comprising: a specific code invalidation canceling unit that cancels invalidation of a vehicle side authentication code.   The specific code invalidation canceling means, from the center that has authenticated that the person requesting the invalidation cancellation is a legitimate vehicle user after the vehicle side authentication code is invalidated by the invalidating means. Canceling the invalidation of the vehicle-side authentication code that matches the portable device-side authentication code of the portable device carried by the authorized vehicle user when the invalidation cancellation request signal transmitted is received by the vehicle The antitheft device for vehicles according to claim 4 characterized by things.   The specific code invalidation canceling means is an authorized vehicle user who requests invalidation cancellation by the authentication means mounted on the vehicle after the vehicle-side authentication code is invalidated by the invalidating means. 5. The invalidation of the vehicle-side authentication code that matches a portable-device-side authentication code of a portable device carried by the authorized vehicle user is canceled when it is authenticated. Anti-theft device for vehicles. The use permission means permits the engine to start,
The vehicle antitheft device according to any one of claims 1 to 6, wherein the invalidating means invalidates the vehicle side authentication code so as to prohibit engine start. An information center that sends a vehicle theft signal to the vehicle in accordance with a request from an authorized vehicle owner;
Use permission means for permitting use of the vehicle when the portable device side authentication code of the portable device that can be carried by the vehicle user matches the vehicle side authentication code registered on the vehicle side, and the vehicle transmitted by the information center A vehicle anti-theft device mounted on a vehicle, comprising: a disabling unit that invalidates the vehicle-side authentication code to restrict use of the vehicle by the use permission unit when a theft signal is received; Anti-theft system for
When the information center authenticates whether or not the person who requests code registration is an authorized vehicle user, and the authentication means authenticates the person as an authorized vehicle user Request signal transmitting means for transmitting a code registration request signal toward the vehicle,
When the vehicle anti-theft device receives a code registration request signal transmitted from the information center after the vehicle-side authentication code has been invalidated by the invalidation means, A vehicle antitheft system comprising code registration means for registering a portable device side authentication code of a portable device carried by a person on the vehicle side as the vehicle side authentication code. An information center that sends a vehicle theft signal to the vehicle in accordance with a request from an authorized vehicle owner;
Use permission means for permitting use of the vehicle when the portable device side authentication code of the portable device that can be carried by the vehicle user matches the vehicle side authentication code registered on the vehicle side, and the vehicle transmitted by the information center A vehicle anti-theft device mounted on a vehicle, comprising: a disabling unit that invalidates the vehicle-side authentication code to restrict use of the vehicle by the use permission unit when a theft signal is received; Anti-theft system for
When the information center authenticates whether or not the person requesting cancellation of invalidation is an authorized vehicle user, and the authentication means confirms that the person is an authorized vehicle user Request signal transmitting means for transmitting an invalidation cancellation request signal to the vehicle,
When the vehicle antitheft device receives the invalidation release request signal transmitted from the information center after the vehicle-side authentication code is invalidated by the invalidating means, An antitheft system for vehicles, comprising: a specific code invalidation canceling unit for canceling invalidation of the vehicle side authentication code that matches a portable device side authentication code of a portable device carried by a user.

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