JP2010168849A - Key code management system of vehicle and registration method of the key code - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a low-cost and secure key code management system of a vehicle which eliminates the risk of leakage of the key code through the Internet. <P>SOLUTION: A vehicle-mounted control unit 200 compares an authentication card ID recorded in the authentication card 212 with an authentication card ID stored in an ID storage memory 204 by communicating with the authentication card 212. When the authentication is OK, the key code is created in the ID storage memory 204. The vehicle-mounted control unit 200 communicates with an ID communications part 104 in a mobile telephone 100, stores the key code stored in the ID storage memory 204 in an ID storage memory 107 through the ID storage memory control part 106 of the mobile telephone 100, and then determines whether the registration is proper or improper. If it is proper, the registration is completed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a key code management system for a vehicle and a key code registration method for registering a key code in a wireless portable terminal in order to enable remote operation with the wireless portable terminal.

  A system for remotely operating a vehicle door lock device or the like using a wireless portable terminal such as a cellular phone is known (for example, see Patent Literature). In this system, a key code necessary for operating a remote operation target device is stored in a server on the Internet. When performing remote operation, first, patent information such as a vehicle number for identifying a vehicle is transmitted to a server, a key code stored in the server is downloaded, and the downloaded key code is transmitted to the wireless portable terminal.

JP 2004-76346 A

  However, in the above-described prior art, personal information and key codes are stored in a server on the Internet. Therefore, information such as personal information, mobile phone information, and vehicle key codes of all users of vehicles using this system is received from the server. There was a risk of leakage.

  If the vehicle key code must be changed for some reason (such as when a key code leak is detected), the user's mobile phone and personal information are re-associated with the vehicle key code and stored again in the server. Since the configuration is required, there is a problem in that the key code changing operation becomes complicated.

  Further, in the above system using a server, there is an operation cost including a server installation cost, monthly maintenance, and the like.

  An object of the present invention is to provide a low-cost vehicle key code management system and a key code registration method that do not risk the key code from leaking from the Internet.

  Accordingly, a first feature of the present invention is a vehicle key code management system, which includes a vehicle-side ID storage memory that stores a key code and a communication antenna, and a command signal from the vehicle-mounted control unit. Communication that includes a vehicle control unit that outputs a control signal to an in-vehicle electronic device that needs to be restricted based on a user, and a portable ID storage memory that can input key code information stored in the vehicle ID storage memory The gist of the invention is to include a portable terminal and an authentication card capable of writing a key code from the in-vehicle control unit to the portable-side ID storage memory in the communication portable terminal via the communication antenna.

  Here, the key code stored in the vehicle-side ID storage memory is preferably registered wirelessly in the portable-side ID storage memory.

Further, the key code stored in the vehicle-side ID storage memory may be registered in the portable-side ID storage memory through a wired connection.

  The key code registered in the portable-side ID storage memory is preferably registered by encrypted communication.

  A second feature of the present invention is a method for registering a vehicle key code, and whether or not the card information registered in the authentication card in the communication antenna of the vehicle-mounted control unit including the vehicle-side ID storage memory and the communication antenna is appropriate. A step of writing the key code of the vehicle-side ID storage memory of the in-vehicle control unit only when the card information of the authentication card is appropriate, the step of writing the portable-side ID storage memory of the communication portable terminal; And the step of completing the authentication when the card information is properly registered in the side ID storage memory and notifying the state when the card information is inappropriate.

  Note that the card information to the portable-side ID storage memory is preferably performed by encrypted communication.

  ADVANTAGE OF THE INVENTION According to this invention, the key code management system and key code registration method of a vehicle without the danger that a key code will leak from the internet are realizable.

It is a block diagram which shows the key code management system which concerns on embodiment of this invention. It is a flowchart which shows the registration method of the key code based on embodiment of this invention.

  Next, a vehicle key code management system and a key code registration method according to the present invention will be described.

The vehicle key code management system according to the present invention, the vehicle-side ID storage memory for storing the key code, the vehicle-mounted control unit including the communication antenna, and the restriction of the user based on the command signal from the vehicle-mounted control unit are required. A vehicle control unit that outputs a control signal to a vehicle-mounted electronic device, a communication portable terminal including a portable ID storage memory capable of inputting key code information stored in the vehicle ID storage memory, and the communication via a communication antenna An authentication card that allows a key code to be written from the in-vehicle control unit to the portable-side ID storage memory in the communication portable terminal. Here, the key code stored in the vehicle-side ID storage memory is preferably registered wirelessly in the portable-side ID storage memory, but may be configured to be registered by wired connection.

  In particular, the key code registered in the portable-side ID storage memory is preferably registered by encrypted communication.

(Vehicle key code management system)
A vehicle key code management system according to an embodiment of the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram showing an outline of a vehicle key code management system according to the present embodiment. This key code management system mainly includes a mobile phone 100 as a wireless portable terminal, an in-vehicle control unit 200 that performs communication with a telephone mounted on a vehicle and subsequent vehicle control, an in-vehicle communication antenna 201, and an out-of-vehicle communication antenna. 203, a vehicle control unit 207, a vehicle key 211, and an authentication card 212.

  The mobile phone 100 includes a control unit 101 that integrally controls the functions of the mobile phone, a display unit 102 that displays information on the mobile phone, a communication unit 103 that includes a call function, and ID communication that performs communication other than the call function. Unit 104, a memory 105 necessary for controlling the function of the mobile phone, an ID storage memory 107 for storing the key code, and an ID storage memory control unit 106 for controlling the memory storing the key code. Become.

  The in-vehicle control unit 200 includes a buzzer 202 that notifies the user of the operation according to the process, a control unit 206 that controls the operation, an ID storage memory 204 that stores an ID for mobile phone verification, and a process other than the mobile phone verification And a memory 205 used for performing the above.

  The vehicle control unit 207 receives an operation command according to the processing result of the in-vehicle control unit 200 and controls the vehicle side. As shown in FIG. 1, the vehicle control unit 207 is connected to a door lock / unlock device 208, an engine start device 209, a lamp on / off device 210, and the like.

  The vehicle key 211 is a key that can unlock the vehicle and start the engine that is attached when the vehicle is purchased, and may be an immobilizer key or smart key FOB that performs electronic authentication.

  The authentication card 212 is a card required at the time of cellular phone registration attached at the time of vehicle purchase, and has an authentication card ID recorded therein. Usually, it is recommended to keep this authentication card 212 at home, and it is handled as a thing that proves that it is the owner of the vehicle.

  The vehicle key code management system according to the present embodiment uses an encryption signal for communication between the mobile phone 100 used by the user and the vehicle, and stores the key code mounted in the vehicle. The key code determined by the control unit 200 is stored in an ID code storage memory 107 built in the mobile phone 100. Accordingly, only the mobile phone 100 registered as a vehicle exists with the key code, so there is no risk of the key code leaking from the Internet. Further, since no server is required, there is no operation cost including server installation costs and monthly server maintenance, and a low-cost system can be realized.

(Key code registration method)
The vehicle key code registration method according to the present invention includes a step of determining whether or not the card information registered in the authentication card in the communication antenna of the vehicle-mounted control unit including the vehicle-side ID storage memory and the communication antenna is appropriate. Only when the card information of the authentication card is appropriate, the step of writing the key code of the vehicle-side ID storage memory of the vehicle-mounted control unit to the mobile-side ID storage memory of the communication mobile terminal, and the card information to the mobile-side ID storage memory is appropriate And the step of completing the authentication when the card information is registered, and notifying the state when the card information is inappropriate. The card information to the portable-side ID storage memory is preferably performed by encrypted communication.

  Next, a vehicle key code registration method according to the present embodiment will be described with reference to the flowchart shown in FIG. First, when registering a mobile phone in the user's vehicle, the vehicle is turned on with the vehicle key 211 (step S1). Note that the ignition is turned on in this way to prevent the battery from running out during the registration operation.

Next, in order to confirm whether or not the user is the owner of the vehicle, the authentication card 212 attached to the vehicle and the in-vehicle communication antenna 201 are communicated to communicate with the control unit 206 (step S2). In addition, as a communication means, non-contact communication etc. are mentioned, for example. Here, the communication between the authentication card 212 and the in-vehicle communication antenna 201 is in a state in which unauthorized registration and authentication are impossible using encryption communication.

  The control unit 206 compares the authentication card ID recorded on the authentication card 212 with the authentication card ID stored in the ID storage memory 204 (step S3).

When the authentication is OK, a key code is created in the ID storage memory 204 and written in the ID storage memory 204. If the comparison result of the authentication card ID is NG, the buzzer 202 is sounded to notify that it is NG (step S4). At the same time, when the comparison result is OK, it may be notified that it is OK.

  The key code is determined so as not to overlap with a key code generated by another produced vehicle, and the key code is stored in the ID storage memory 204. For example, when the key code length is all 48 bits, the part set from the serial number of the in-vehicle control unit 200 and the part randomly generated by the control unit 206 of the in-vehicle control unit 200 are divided into two parts. Only when all the 48-bit key codes match, the authentication is proper. In the present embodiment, as shown in FIG. 2, the former is described as VID and the latter as registration ID.

  Next, the ID communication unit 104 in the mobile phone 100 communicates with the in-vehicle communication antenna 201. The key code stored in the ID storage memory 204 is stored through the ID storage memory control unit 106 of the mobile phone 100 (step S5).

  Thereafter, it is determined whether the key code registration is proper or inappropriate (step S6). If it is inappropriate, notification that registration / deletion is NG is performed (step S7). If it is appropriate, the authentication is completed.

  When the key code is registered by the registration method of the present embodiment, the key code of the mobile phone 100 is stored in the control unit 206 in the in-vehicle control unit 200 via the in-vehicle communication antenna 201 or the out-of-vehicle communication antenna 203. It can be collated with the vehicle side key code stored in the memory 204. If the two key codes match, a control command such as door lock / unlock, engine start, hazard control, air conditioner control, seat control, etc. can be transmitted to the vehicle control unit 207.

  Since the key code registered by such a registration method does not exist on the Internet, there is no risk of leakage from the Internet.

  According to the key code registration method according to the present embodiment, the vehicle key 211 performs the registration with the ignition turned on, so that it is possible to prevent the battery from running out during the registration operation.

  INDUSTRIAL APPLICABILITY The present invention can be used in the field of manufacturing vehicles and the like equipped with electronic devices that require restriction of users.

DESCRIPTION OF SYMBOLS 100 ... Mobile phone 101 ... Control part (mobile side)
104 ... Communication part (mobile side)
106 ... ID storage memory control unit (portable side)
107 ... ID storage memory (mobile side)
200 ... Vehicle control unit 201 ... In-car communication antenna (vehicle side)
204 ... ID storage memory (vehicle side)
206 ... Control unit (vehicle side)
207 ... Vehicle control unit 211 ... Vehicle key 212 ... Authentication card

Claims (6)

An in-vehicle control unit comprising a vehicle-side ID storage memory for storing a key code and a communication antenna;
A vehicle control unit that outputs a control signal to an in-vehicle electronic device that needs to provide a user restriction based on a command signal from the in-vehicle control unit;
A communication portable terminal including a portable ID storage memory capable of inputting key code information stored in the vehicle ID storage memory;
An authentication card capable of writing a key code from the in-vehicle control unit to the portable side ID storage memory in the communication portable terminal via the communication antenna;
A vehicle key code management system comprising:   The key code management system for a vehicle according to claim 1, wherein the key code stored in the vehicle-side ID storage memory is wirelessly registered in the portable-side ID storage memory.   The key code management system for a vehicle according to claim 1, wherein the key code stored in the vehicle-side ID storage memory is registered to the portable-side ID storage memory through a wired connection.   The key code management system for a vehicle according to any one of claims 1 to 3, wherein the key code registered in the portable-side ID storage memory is registered by encrypted communication. Determining whether or not the card information registered in the authentication card in the communication antenna of the vehicle-mounted control unit including the vehicle-side ID storage memory and the communication antenna is appropriate;
Writing the key code of the vehicle-side ID storage memory of the vehicle-mounted control unit into the mobile-side ID storage memory of the communication portable terminal only when the card information of the authentication card is appropriate;
Completing the authentication when the card information is properly registered in the portable-side ID storage memory, and notifying the state when the card information is inappropriate;
A vehicle key code registration method comprising:   6. The vehicle key code registration method according to claim 5, wherein the card information in the portable-side ID storage memory is encrypted communication.

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