KR100514388B1 - Method for igniting the engine of vehicle using transponder embeded in cellular phone - Google Patents

Abstract

The present invention relates to a vehicle starting method using a mobile phone built-in transponder, more specifically, a vehicle can be started using a mobile phone with a built-in auxiliary key and a transponder when a master key containing a transponder is lost. Therefore, the present invention relates to a vehicle starting method using a mobile phone built-in transponder to improve vehicle performance and improve customer convenience.

Vehicle startup method using a mobile phone built-in transponder of the present invention, the first step of connecting to the server of the service center using a mobile phone equipped with a transponder; A second step of confirming a request for registration or deletion of a password after confirming customer authentication in a server; A third step of transmitting a delete command to the mobile phone if the password is deleted and deleting the password stored in the transponder from the mobile phone; A fourth step of verifying a vehicle number if a password registration request is generated and generating a password and transmitting the generated password to a mobile phone; Receiving a password from the cellular phone and recording the password in the transponder; And a sixth step of transmitting the password stored in the transponder and outputting the engine start enable or engine start disable signal to the engine ECU when the vehicle authentication request is received.

Description

Method for igniting the engine of vehicle using transponder embeded in cellular phone}

The present invention relates to a vehicle starting method using a mobile phone built-in transponder, more specifically, a vehicle can be started using a mobile phone with a built-in auxiliary key and a transponder when a master key containing a transponder is lost. Therefore, the present invention relates to a vehicle starting method using a mobile phone built-in transponder to improve vehicle performance and improve customer convenience.

In order to improve user convenience, a key (hereinafter, referred to as a "master key") incorporating an immobilizer transponder is used. 1 is a schematic configuration diagram of a control unit 9 for outputting a user authentication and start permission message to an engine EMS (not shown) through data communication between a master key 2 and a master key 2 used in the related art. to be.

As shown, the master key 2 is configured to be portable, and the control unit 9 is connected to the coil antenna 10. On the other hand, the coil antenna 10 is provided in the key cylinder 8 provided with the key hole 6.

The master key 2 incorporates a transponder 4 having a structure as shown in FIG. Referring to FIG. 2, the transponder 4 includes an ASIC chip module 42 storing data and programs, a condenser 44, and a coil antenna 46 for transmitting and receiving radio signals.

The operating state of the transponder 4 is as follows. When a radio signal of a specific frequency band is input through the coil antenna 46 from the coil antenna 10 connected to the control unit 9, the transponder 4 acquires energy required for operation by using the input radio frequency signal. And transmits specific data such as a password for user authentication stored in the chip module 42. The transmitted specific data is received by the coil antenna 10 which has transmitted the radio signal.

The signal received by the coil antenna 10 is compared with the specific data embedded after being read by the control unit 9, and the control unit 9 approves user authentication if the input data has the same value and the engine EMS Send a normal start message. Therefore, the driver can start the engine after inserting the master key 2 into the keyhole 6.

Despite the above convenience, the master key 2 is often lost while being carried. If the master key 2 is lost, the vehicle cannot be controlled at all, so that the vehicle can be started using the auxiliary key 3 in which the transponder 4 is not built in for emergency use. A vehicle starting function using an auxiliary key, commonly referred to as `` Limp Home '', is to start using a four-digit password that the driver remembers. That is, it is possible to start by turning on / off the ignition in a manner consistent with the password of the rimform using the auxiliary key.

However, the rimform function is not only very complicated to execute correctly, but also causes inconvenience to the driver because the rimform function must be performed every time the vehicle is started. Moreover, if the password for the rimform function is lost or lost, the vehicle traction is inevitable due to the inability to perform the rimform function.

The present invention is to solve the above problems, an object of the present invention is that vehicle performance can be started by using a mobile phone with a built-in auxiliary key and transponder when the master key containing the transponder is lost In addition, the present invention provides a vehicle starting method using a mobile phone built-in transponder that can improve customer convenience.

Vehicle startup method using a mobile phone built-in transponder of the present invention for achieving the above object, the first step of connecting to the server of the service center using a mobile phone equipped with a transponder; A second step of confirming a request for registration or deletion of a password after confirming customer authentication in a server; A third step of transmitting a delete command to the mobile phone if the password is deleted and deleting the password stored in the transponder from the mobile phone; A fourth step of verifying a vehicle number if a password registration request is generated and generating a password and transmitting the generated password to a mobile phone; Receiving a password from the cellular phone and recording the password in the transponder; And a sixth step of transmitting the password stored in the transponder and outputting the engine start enable or engine start disable signal to the engine ECU when the vehicle authentication request is received.

Hereinafter, a vehicle starting method using a mobile phone embedded transponder of the present invention will be described in detail with reference to the accompanying drawings.

The method of the present invention starts the engine of the vehicle by using a mobile phone and an auxiliary key with a built-in transponder without using a limp home function using an auxiliary key when a conventional master key with an immobilizer transponder is lost. That's how you can do it.

In the method of the present invention as described above, referring to Figure 3, a mobile phone 20 with a built-in transponder (4), a conventional auxiliary key (3) without a built-in transponder, the communication module 32, authentication Module 34, control module 36 and password DB 38 for storing data such as passwords, undercarriage numbers, etc. After the authentication of the user is completed, the password set in the user's vehicle is transferred to the mobile phone 20. It is executed using the server 30 of the service center to transmit. The server 30 is connected to the mobile communication company 40 through a wired or wireless communication network.

Cell phone 20 according to the present invention is used in the same manner as the conventional master key (2) for the user authentication, at this time to start the vehicle using the auxiliary key (3). On the other hand, the coil antenna 10 and the control unit 9 conventionally installed in the key cylinder 8 do not need any change.

First, referring to FIG. 4, the structure of the transponder 4 installed in the cellular phone 20 is as follows. The transponder 4 may be installed on a PCB or a folder cover of a cellular phone, and has a structure substantially the same as that shown in FIG. The chip module 42 of the transponder 4 includes a memory element (encryption key memory element) for storing a program necessary for control and an encrypted password.

In the present invention, the data can be updated by recording / deleting a password in the chip module 42 without locking the contents so that the contents of the encryption key memory cannot be changed. This is to store the newly changed password in the mobile phone when the password of the vehicle is changed in accordance with the sale of the vehicle.

On the other hand, since the operating state of the condenser 44 and the coil antenna 46 is well known, detailed description thereof will be omitted.

The mobile phone 20 according to the present invention further includes a reception circuit 22 in a normal mobile phone, and when a password is transmitted from the service center server 30, the coil is connected to the reception circuit 22. The antenna 24 is used to transmit wirelessly. At this time, the reception circuit 22 outputs a predetermined frequency including a password to transmit the operating energy and the password required by the transponder 4.

This is essentially the same way as performed by the control unit 9 installed in the vehicle. However, the receiving circuit 22 of the mobile phone 20 has a difference from transmitting a password from the service center server 30 to the transponder 4. The password transmitted through the receiving circuit 22 as described above is stored in the encryption key memory element of the chip module 32. At this time, it is desirable to encrypt and store the password.

When the radio frequency signal is input from the control unit 9 of the vehicle to the transponder 4 while the password is stored in the transponder 4 of the cellular phone 20 as described above, the password stored in the transponder 4 is the coil antenna. Transmitted via 46.

The method of the present invention performed in the system having the above configuration will be described with reference to the flowchart of FIG. 5.

First, it is assumed that the transponder 4 is mounted on the cellular phone 20, and the encryption key memory device embedded in the chip module 42 of the transponder 4 maintains a blanking state. In this state, the driver loses the master key 2 and uses the auxiliary key 3 having no built-in transponder 4 to start the driver. The driver connects to the service center by the mobile phone 20.

In the service center, when the connection request is received from the mobile phone 20, the customer authentication check operation is performed. The customer authentication confirmation operation induces the driver or customer to input predetermined information to the server 30 in advance, and when a request for transmission or deletion of the password is received later, it is determined whether the input information matches the previously input information. Perform authentication.

The information input for the customer authentication is submitted by the driver or the customer in advance and may be a vehicle's chassis number, a mobile phone number or a password. The service center server 30 has a communication module 32 for voice or data communication with a telecommunication company for this purpose, an authentication module 34 for verifying the identity of a customer, a password for storing a vehicle number and a password, and the like. Database 38 and the like.

The service center server 30 checks the registration or deletion request of the vehicle password after confirming the customer authentication. The registration or deletion request is input by the customer through the mobile phone 20, and may be input by using a specific function key during the call of the mobile phone 20. This can be done using the ARS function.

When the password deletion request is input by the driver or the customer, the server 30 transmits a deletion command to the mobile phone 20. The receiving circuit 22 of the cellular phone 20 outputs a signal to confirm that the delete command is transmitted and to delete the password data stored in the encryption key memory element of the transponder 4. The password of the transponder 4 is deleted by the delete command. The deletion command as described above is performed in a state in which a password is stored in the transponder 4 of the mobile phone 20 in advance.

On the other hand, when a password registration request is received, the identification number confirmed at the time of customer authentication is generated and transmitted. The password should be the same as the password stored in the master key 2. This password is a password recorded in the production line of the vehicle, and is stored in advance in the database 38 of the server 30.

After generating the password according to the vehicle number as described above, the server 30 transmits the password to the mobile phone (20). When the password is transmitted as described above, the reception circuit 22 of the cellular phone 20 receives the password and transmits the password to the transponder 4 attached to the cellular phone. In the chip module 42 of the transponder 4, if a password is input, it is encrypted and stored in the encryption key memory element. This completes the input of the password.

If the password is normally stored, the transmission success message is output on the display window of the mobile phone 20, and if the storage fails, the transmission failure message is output. The driver or the customer may check the message and repeat the connection and authentication in case of transmission failure to store the password in the transponder 4 of the mobile phone 20.

If the driver or the customer loses the master key 2 and wants to start the vehicle using the auxiliary key 3 as described above, the auxiliary key 3 is inserted into the keyhole 6 or inserted. Before, the cellular phone 20 is brought close to the key cylinder 8 of the vehicle. This state is shown in FIG. The coil antenna 10 installed in the key cylinder 8 receives and outputs a modulated signal periodically from the control unit 9, and the radio transmitted from the coil antenna 10 in the transponder 4 installed in the mobile phone 20. The password stored in the transponder 4 is transmitted through the coil antenna 46 using the frequency signal.

The control unit 9 of the vehicle reads the password inputted through the coil antenna 10 mounted on the key cylinder 8, and then checks whether the read password corresponds to the built-in password. As a result of the check, if the password matches, the control signal is output to the engine ECU so that the engine can be started. In the state where the engine can be started, the driver or the customer can normally start the vehicle by using the auxiliary key 3.

According to the present invention, if the master key with a built-in transponder is lost, the vehicle can be started using the auxiliary key and the mobile phone with the built-in transponder, thereby improving the vehicle performance and improving the convenience of the customer. It works.

1 is a schematic configuration diagram of a conventional master key and a control unit,

2 is a block circuit diagram of the transponder of FIG.

3 is a schematic structural diagram of a system in which the method of the present invention is implemented;

4 is a partial block circuit diagram of a mobile phone equipped with a transponder;

5 is a flowchart for explaining the method of the present invention.

※ Explanation of symbols about main part of drawing ※

2: master key 4: transponder

6: keyhole 8: key cylinder

9: control unit 10: coil antenna

20: cell phone 22: receiving circuit

24: coil antenna 26: transmit and receive antenna

30: service center server 32: communication module

34: authentication module 36: control module

38: password DB 40: mobile carrier

42: chip module 44: capacitor

46: coil antenna

Claims (4)

A first step of connecting to a server of a service center by using a mobile phone equipped with a transponder; A second step of confirming a request for registration or deletion of a password after confirming customer authentication in a server; A third step of transmitting a delete command to the mobile phone if the password is deleted and deleting the password stored in the transponder from the mobile phone; A fourth step of verifying a vehicle number if a password registration request is generated and generating a password and transmitting the generated password to a mobile phone; Receiving a password from the cellular phone and recording the password in the transponder; And a sixth step of transmitting a password stored in the transponder and outputting an engine start enable or engine start disable signal to the engine ECU when the vehicle authentication request is made. Vehicle starting method using. The method of claim 1, Vehicle starting method using a mobile phone built-in transponder, characterized in that the password in the fourth step is the same password stored in the master key (2). The method of claim 1, And if the password is normally stored in the fifth step, outputting a transmission success message to the display window of the mobile phone 20, and if the storage fails, outputting a transmission failure message. How to start. The method of claim 1, Vehicle startup method using a mobile phone built-in transponder, characterized in that the password is encrypted and stored in the fifth step.