KR20070109578A - Navigation apparatus for updating application program of vehicle and updating method thereof - Google Patents

Abstract

A navigation apparatus for updating an application program of a vehicle and an updating method thereof are provided to effectively prevent the information of an ECU(Electronic Control Unit) from being modified or leaked without permission. A navigation apparatus(100) for updating an application program of a vehicle includes a first network interface unit(130), a second network interface unit(140), a memory unit(110), and a controlling unit(120). The first network interface unit performs communication with external equipment through a first communication protocol. The second network interface unit performs communication with an ECU(300) of the vehicle through a second communication protocol. The memory unit stores a program which processes the first communication protocol and the second communication protocol, and an updating program which updates the ECU with the application program which is received through the first network interface unit. The controlling unit receives the application program from the external equipment through the first network interface unit by executing the updating program stored in the memory unit, and updates the ECU with the corresponding application program by communicating with the ECU through the second interface unit.

Description

NAVIGATION APPARATUS FOR UPDATING APPLICATION PROGRAM OF VEHICLE AND UPDATING METHOD THEREOF}

1 is a block diagram of a navigation device equipped with a vehicle application update function according to an embodiment of the present invention.

2 is a flowchart of a vehicle application program update in a navigation device according to an embodiment of the present invention;

<Description of the symbols for the main parts of the drawings>

100: navigation device 110: memory

120: control unit 121: first network communication processing unit

122: second network communication processing unit 123: reception processing unit

124: update performing unit 125: screen display processing unit

130: first network interface unit 140: second network interface unit

150: voice processing unit 160: speaker

170: key input unit 180: display unit

The present invention relates to an application program update of a vehicle using a navigation device, and more particularly, to an electronic control (ECU) of a vehicle using a universal serial bus (USB) port and a controller area network (CAN) port provided in a vehicle navigation device. The present invention relates to a navigation device having a vehicle application update function capable of updating various applications mounted on a unit, and a method of updating the same.

The ECU is located on each of the four wheels of the vehicle, and if the vehicle is steered down or oversteer, it controls the degree of rotation of the wheel according to its own input program. It controls the rotation of the four wheels by themselves. As such, ECU is an essential technology for vehicle intelligence and has been applied to various vehicles.

ECUs usually have 8, 16, and 32-bit microprocessors, and 30 to 40 are commonly used in current vehicles. Wipers, airbags, air conditioners, power windows, and power sheets are all controlled by the ECU. Recently, vehicles have been electronically integrated with navigation and telematics terminals.

In the conventional case, when an error or a bug occurs in an ECU installed in a vehicle, there is a need to perform an update such as a change operation or a reprogramming of the corresponding application program mounted on the ECU.

However, updating the application onboard the ECU can be a critical variable for the vehicle's operation, requiring sophisticated work and security.

In addition, the application programs loaded on the ECU of each vehicle have a lot of difficulties in updating the application loaded on the ECU due to various vendor specifications.

The technical problem to be achieved by the present invention is to be able to easily update the various application programs mounted on the ECU of the vehicle by using the navigation device mounted on the vehicle.

According to an aspect of the present invention for achieving the technical problem, the first network interface unit for communicating with the external device through the first communication protocol, and the communication with the ECU of the vehicle through the second communication protocol A memory for storing a second network interface unit, a program for processing the first communication protocol and a second communication protocol, and an update execution program for updating the application program received through the first network interface unit to the ECU of the vehicle; Executing the update execution program stored in the memory to receive an application program to be updated from the external device through the first network interface unit, and communicating with the ECU of the vehicle through the second interface unit. Of the corresponding application to the ECU of the vehicle Provided is a navigation device having a vehicle application update function including a control unit for performing an update.

Preferably, the first communication protocol is a wired communication protocol including a universal serial bus (USB) communication protocol or a wired LAN communication protocol, or a wireless communication protocol including an infrared communication protocol or a Bluetooth communication protocol or an RF communication protocol or a wireless LAN communication protocol. Can be.

Preferably, the second communication protocol is a wired communication protocol including a controller area network (CAN) communication protocol or a universal serial bus (USB) communication protocol or a wired LAN communication protocol, or an infrared communication protocol or a Bluetooth communication protocol or an RF communication protocol or wireless. It may be a wireless communication protocol including a LAN communication protocol.

Preferably, the controller uses a first network communication processor to communicate with an external device using the first communication protocol through the first network interface, and uses the second communication protocol through the second network interface. A second network communication processor for communicating with the ECU of the vehicle, a reception processor for receiving an application program to be updated from an external device connected by the first network communication processor, and an application program received through the reception processor. And an update execution unit for updating the corresponding application program to the ECU of the vehicle to which the communication is connected by the second network communication processing unit, and a screen display processing unit for providing an update execution procedure on the screen.

According to another aspect of the present invention, a method for updating an application program of a vehicle in a navigation device, the first step of performing communication with an external device using a first communication protocol through a first network interface unit, and the first A second step of receiving an application to update from an external device to which communication is connected by the step; a third step of communicating with the ECU of the vehicle using the second communication protocol through the second network interface unit; A fourth step of updating an application program received through a second step to update a corresponding application program to an ECU of the vehicle in which communication is connected through the third step provides a vehicle application update method of a navigation device.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a navigation device equipped with a vehicle application update function according to an embodiment of the present invention.

Referring to FIG. 1, a navigation device 100 having a vehicle application program update function according to an embodiment of the present invention may include a memory 110, a controller 120, a first network interface 130, and 2 includes a network interface unit 140, a voice processing unit 150, a speaker 160, a key input unit 170, and a display unit 180.

The memory 110 may include a program for processing the first and second communication protocols, an update execution program for performing an application program update for the ECU 300 of the vehicle, and a first network interface unit 110. The program received from the external PC 200 is stored.

Here, the first communication protocol is a wired or wireless communication protocol used to communicate with a navigation device and external communication equipment through a wired or wireless network interface.

For example, the first communication protocol is a wired communication protocol including a universal serial bus (USB) communication protocol or a wired LAN communication protocol, or a wireless communication including an infrared communication protocol or a Bluetooth communication protocol or an RF communication protocol or a wireless LAN communication protocol. Protocol.

The second communication protocol is a wired or wireless communication protocol for communicating with the navigation device and the ECU 300. Preferably, it may be a communication protocol that is used universally for communication between various devices in the vehicle, and the navigation device and the ECU 300 may be connected even though the communication protocol is not universally used for communication between various devices in the vehicle. Any communication protocol is possible.

For example, the second communication protocol may be a wired communication protocol including a controller area network (CAN) communication protocol or a universal serial bus (USB) communication protocol or a wired LAN communication protocol, or an infrared communication protocol or a Bluetooth communication protocol or an RF communication protocol or It may be a wireless communication protocol including a wireless LAN communication protocol.

Therefore, the first communication protocol and the second communication protocol can be implemented using the same communication protocol, and in view of a special situation in which the second communication protocol is used in a vehicle, the second communication protocol is a communication protocol commonly used in a vehicle. The first communication protocol can be made to use a communication protocol used in a general communication device.

For example, the memory 110 may be a USB communication protocol for communicating with the PC 200 via the first network interface unit 130 as a first communication protocol, and the second network interface unit 140 as a second communication protocol. In order to perform CAN communication with the ECU 300 of the vehicle is equipped with a CAN communication protocol.

The Controller Area Network (CAN) communication protocol is a serial bus system. The CAN communication protocol was internationally standardized in 1993 (ISO 11898-1) and consists of a data link layer of the seven-layer ISO / OSI reference model.

The CAN communication protocol provides communication services of message transmission (data frame transmission) and message request (remote transmission request, RTR). All other user-friendly services such as error signaling and automatic retransmission of invalid frames are performed automatically.

The CAN communication protocol can connect several nodes that perform each function required for the operation of a vehicle on a single serial bus. This allows communication between nodes connected on a CAN bus network.

The CAN communication protocol consists of a unique identifier of a CAN frame or message. This identifier tells you exactly which nodes will receive the frame. Therefore, the memory 110 stores identifiers of the vehicle ECU 300 necessary for CAN communication as connection information. For example, it may be an address of the ECU 300.

In addition to the identifier, various information such as data length, data byte, error check, and frame recognition are included in the frame.

Accordingly, when the navigation device 100 transmits an arbitrary message to the CAN bus network for updating the application program of the ECU 300, the ECU 300 as well as other nodes connected to the CAN bus network receive the message. Each node checks the identifier of the frame received on the CAN bus network to see if the message is coming to it.

The controller 120 executes the update execution program stored in the memory 130 to download an application program to be updated from the PC 200 connected through the first network interface unit 130, and the second network interface unit 140. By transmitting to the ECU 300 of the vehicle through the update of the corresponding application.

To this end, the controller 120 includes a first network communication processor 121, a second network communication processor 122, a reception processor 123, an update performer 124, and a screen display processor 125.

The first communication network communication processing unit 121 communicates with the PC 200 using the USB communication protocol through the first network interface unit 130.

Accordingly, when the first communication network communication processing unit 121 executes a command for downloading an application to be updated by the user's selection while the update execution screen is displayed on the display unit 180, the first communication network communication processing unit 121 communicates with the PC 200. Try.

The second network communication processing unit 122 communicates with the corresponding ECU 300 of the vehicle through the second network interface unit 140 using the CAN communication protocol.

In the CAN communication protocol, addressing concepts such as those used in Ethernet, etc. are not used, and arbitrary messages are simultaneously distributed to all nodes in the CAN bus network using a unique identifier in the CAN bus network.

Individual nodes decide whether or not to process the message based on this identifier. The bus access order also prioritizes messages according to the competition principle. In contrast to the transmission interruption on Ethernet when a collision is detected, the CAN communication protocol allows for uninterrupted data transmission.

Therefore, the second network communication processor 122 must receive connection information corresponding to the identifier of the vehicle ECU 300 to perform the application program update.

The connection information of the ECU 300 to perform the application program update may be an address of the ECU 300. Accordingly, the address may be directly input by the user, or may be input according to the user's selection while displaying the address of the ECU 300 already stored in the memory 110 on the screen.

The reception processing unit 123 receives an application program transmitted from the PC 200 when communication is connected between the navigation device 100 and the PC 200 by the first network communication processing unit 121.

The reception processor 123 receives an application program transmitted from the PC 200 and stores the received application program in the memory 100.

The update performing unit 124, when communication is connected with the ECU 300 by the second communication network communication processing unit 122, before performing the update, the version of the application program stored in the memory 110 and the corresponding stored in the ECU 300. Compare versions of the app.

The result of the version comparison by the update performing unit 124 is displayed on the display unit 180 by the screen display processing unit 125.

When it is determined that the update is to be executed according to the user's selection, the update performing unit 124 transmits the application program stored in the memory 110 to the ECU 300 to perform the update of the corresponding application program.

In addition, the update execution unit 124 may perform a security authentication procedure to proceed with the corresponding update procedure only when the security certification passes.

The reason for performing security authentication in the update execution unit 124 is that updating or changing the application program of the ECU 300 may be an important variable in the operation of the vehicle. Therefore, it is to prevent unauthorized users from connecting to the ECU 300 in advance.

As a method of performing security authentication in the update execution unit 124, when information for performing a predetermined password or security authentication is previously set in the ECU 300, the ECU 300 is preset in the ECU 300 at the time of communication of the ECU 300. By displaying a message for inputting the set password or information to the user, the password or information input by the user may be transmitted to the ECU 300 to determine whether to proceed with the update according to the security authentication result performed by the ECU 300.

In addition, another method of performing security authentication in the update execution unit 124 may include a program for performing a security authentication procedure with a password or other information necessary for security authentication to perform the update execution procedure in the memory 110. If the user requests to perform an update operation, the program executes a security authentication procedure in the memory 110 to perform a security authentication using a pre-stored password or other information, and then passes the security authentication successfully. Various procedures for updating can be performed.

The step of performing security authentication in the update execution unit 124 may be performed when there is an update request while communicating with the ECU 300, and the update request is performed even when the communication with the ECU 300 is not made. If so, you can also perform security authentication.

As such, the update execution unit 124 performs a security authentication procedure in determining whether to execute the update procedure, thereby protecting the information in the ECU 300 which provides an important variable for the operation of the vehicle against unauthorized user's operation. It becomes possible.

The security authentication procedure performed by the update execution unit 124 may be guided to the user through the speaker, or may be guided through the screen.

The screen display processing unit 125 displays various update execution screens for performing an update of an application program for the ECU 300 of the vehicle on the display unit 180.

For example, the screen display processing unit 125 updates an application when an update execution command for the ECU 300 of the vehicle to be updated is selected by the user's selection while the update execution screen is displayed on the display unit 180. Displays an input screen for receiving the connection information of the vehicle ECU 300 to be performed.

In addition, the screen display unit 125 displays the version comparison result on the screen by the update execution unit 124 and also displays a screen asking whether to execute the update.

The first network interface unit 130 includes a USB port for executing a program to be updated from an external PC 200 through a universal serial bus (USB) communication protocol. Therefore, the first network interface unit 130 communicates using a USB cable.

In addition, the first network interface unit 130 may perform a wireless communication by mounting a wireless communication module in a USB port. For example, a wireless communication module that can be mounted on a USB port includes a Bluetooth module, an RF module, an infrared communication module, and a wireless LAN module.

In addition, the first network interface 130 may include a wired LAN port or a wireless LAN module. The first network interface 130 may communicate with an external PC 200 by connecting a LAN line to a wired LAN port or perform wireless communication with an external PC 200 through a wireless LAN module.

The second network interface unit 140 communicates with the ECU 300 of the vehicle through a controller area of network (CAN) communication protocol. Accordingly, the second network interface 140 includes a CAN port for connecting the navigation device 100 to a CAN bus network connected to each node of the vehicle.

The voice processor 150 is generally composed of a VOCODER and the like, and is driven by the control of the controller 120.

The voice processor 150 performs voice processing for reproducing the voice information from the various navigation information stored in the memory 110 and outputting the voice information to the speaker 160.

The key input unit 170 generally has a key matrix structure. The key input unit 170 includes a function key for performing various functions, including a plurality of numeric keys and direction keys, and outputs an electrical signal of key data to the controller 120 by a user's key input.

The display unit 180 provides a screen window to display various navigation information stored in the memory 110 and a procedure of updating an application program in the ECU 300 of the vehicle.

2 is a flowchart illustrating a vehicle application program update in a navigation device according to an embodiment of the present invention.

Referring to FIG. 2, when an update execution program stored in the memory 110 is executed according to the operation of the key input unit 170, the screen display processing unit 125 displays an update execution screen for performing an update of an application program on the display unit 180. It is displayed (S1).

When a command for downloading an application to be updated is executed by the user's selection while the update execution screen is displayed on the display unit 180, the first communication network communication processing unit 121 performs the first network interface unit 130. Communication with the PC 200 is performed using the USB communication protocol (S2).

The reception processor 123 receives an application program to be updated from the PC 200 according to a user's selection in a state in which the PC 200 and the USB communication are connected (S3).

When an update execution command for the ECU 300 of the vehicle to be updated is executed by the user's selection while the update execution screen is displayed on the display unit 180, the screen display processing unit 125 sends an application update to the display unit 180. An input screen for receiving connection information of the vehicle ECU 300 to be performed is displayed (S4).

The second communication network communication processor 122 determines whether the connection information is input (S5), and when the connection information of the vehicle ECU 300 to perform the application program update is input through the input screen, the second network interface unit 140. Through the CAN communication protocol through the communication with the corresponding ECU 300 of the vehicle (S6).

In a state in which communication is connected with the ECU 300 by the second communication network communication processor 122, the update performing unit 124 may have a version of an application program stored in the memory 110 and a version of an application program stored in the ECU 300. Is compared (S7).

The screen display processing unit 125 displays the version comparison result on the screen by the update execution unit 124 and also displays a screen asking whether to execute the update (S8).

The update performing unit 124 determines whether the update is requested to be executed by the user (S9) and transmits the application program stored in the memory 110 to the ECU 300 when the update is requested to be executed according to the user's selection. To update the application (S10).

The present invention has been described with reference to preferred embodiments. However, those skilled in the art will understand that many other embodiments other than those specifically described also fall within the spirit and scope of the invention.

For example, in an embodiment of the present invention, a navigation device downloads an application program from a PC and stores the application program in a memory, and then transmits and updates the application program stored in the memory to the ECU of the vehicle. You can connect the navigation device and the PC without storing them in the memory of the device, and select the application on the web using the web connection of the PC and update the vehicle ECU by connecting the navigation device to the vehicle ECU through CAN communication. Can also be.

In addition, although one embodiment of the present invention has been described for updating the application program of the ECU with a navigation device equipped with a function capable of processing the CAN communication protocol used for communication between each node of the vehicle, in addition to the CAN communication The navigation device can be updated with the ability to handle other communication protocols used for inter-node communication.

In addition, although the application of the ECU is updated here, the CAN communication function installed in the navigation device can monitor various operating states of the ECU, and control over other nodes of the vehicle to which the CAN communication is connected is also possible. You can try a variety of things.

In addition, in the exemplary embodiment of the present invention, a case in which the navigation device is connected to the PC has been described. In addition to the PC, various mobile communication terminal devices, for example, a PDA having a data transmission / reception function and a mobile communication terminal may be used in various ways. .

In addition, the embodiment of the present invention has been described in that the navigation device communicates with an external device such as a PC while executing the update execution program built in the navigation device, and communicates with the ECU to update the application program of the ECU. .

However, in addition to this, the navigation device plays a role of relaying an external device such as a PC to the ECU, so that the navigation device does not perform an update procedure, but an update procedure that is driven by an external PC or vehicle ECU may be added. Can also be.

The navigation device according to the present invention includes a USB port and a CAN port. Therefore, by using the USB port provided in the navigation device to download the application to be updated from an external device such as a PC, and store it in the memory, the stored application on the CAN bus network through the CAN port provided in the navigation device The application can be updated on the ECU of the connected vehicle.

By doing so, a vehicle equipped with a navigation device that performs a vehicle application update according to the present invention can be debugged or upgraded through the CAN download function of the navigation device when the application program of various functions mounted on the ECU of the vehicle is released even after it is released. It can be done easily.

In addition, even if there are various suppliers of vehicle ECUs, as the trend progresses toward performing CAN communication in the future, application programs using CAN communication mounted in the navigation device of the present invention may also be applied to ECUs supplied by different suppliers. The update function allows you to update the application for the ECU.

In addition, when updating various application programs for the ECU through the navigation device, the security authentication procedure is performed in deciding whether to execute the update procedure for the ECU. This protects against unauthorized users attempting to access or operate the vehicle's ECU via the network.

Accordingly, it is possible to effectively prevent the various information of the ECU important to the operation of the vehicle to be modified or leaked by unauthorized outsiders through a wired network or a wireless network with weak security.

Claims (9)

A first network interface unit communicating with an external device through a first communication protocol; A second network interface unit communicating with the ECU of the vehicle via the second communication protocol; A memory for storing a program for processing the first and second communication protocols, an update execution program for updating the application program received through the first network interface unit to the ECU of the vehicle; Executes the update execution program stored in the memory to receive an application program to be updated from the external device through the first network interface unit, and communicates with the ECU of the vehicle through the second interface unit to communicate with the vehicle; A navigation device with a vehicle application update function comprising a control unit for updating the application program to the ECU of the vehicle. The method of claim 1, wherein the first communication protocol is a wired communication protocol including a universal serial bus (USB) communication protocol or a wired LAN communication protocol, or includes an infrared communication protocol or a Bluetooth communication protocol or an RF communication protocol or a wireless LAN communication protocol. Navigation device with vehicle application update function, a wireless communication protocol. The method of claim 1, wherein the second communication protocol is a wired communication protocol including a controller area network (CAN) communication protocol, a universal serial bus (USB) communication protocol, or a wired LAN communication protocol, an infrared communication protocol, a Bluetooth communication protocol, or an RF communication. A navigation device equipped with a vehicle application update function, which is a wireless communication protocol including a protocol or a wireless LAN communication protocol. The method according to claim 1, wherein the control unit, A first network communication processor configured to communicate with an external device using the first communication protocol through the first network interface unit; A second network communication processor configured to communicate with the ECU of the vehicle using the second communication protocol through the second network interface; A reception processing unit which receives an application program to update from an external device connected by the first network communication processing unit; An update execution unit for updating the application program received through the reception processing unit to the ECU of the vehicle to which the communication is connected by the second network communication processing unit; A navigation device with a vehicle application update function comprising a screen display processing unit for providing a procedure of performing an update on a screen. The method according to claim 4, The update execution unit performs a security authentication procedure, the navigation device with a vehicle application program update function, characterized in that proceeds with the update procedure only when the security authentication passes. By updating the application of the vehicle in the vehicle's navigation device, A first step of performing communication with an external device using a first communication protocol through the first network interface unit; A second step of receiving an application to update from an external device to which communication is connected by the first step; A third step of communicating with the ECU of the vehicle using the second communication protocol through the second network interface unit; And a fourth step of updating the application program received through the second step to the ECU of the vehicle to which the communication is connected through the third step. The method of claim 6, wherein the first communication protocol is a wired communication protocol including a universal serial bus (USB) communication protocol or a wired LAN communication protocol, or includes an infrared communication protocol or a Bluetooth communication protocol or an RF communication protocol or a wireless LAN communication protocol. Vehicle application update method of a navigation device which is a wireless communication protocol. The method of claim 6, wherein the second communication protocol is a wired communication protocol including a controller area network (CAN) communication protocol, a universal serial bus (USB) communication protocol, or a wired LAN communication protocol, an infrared communication protocol, a Bluetooth communication protocol, or an RF communication. Vehicle application update method of a navigation device which is a wireless communication protocol including a protocol or a wireless LAN communication protocol. The method of claim 6, wherein the fourth step, A method of updating a vehicle application of a navigation device, characterized in that the update procedure is performed only when the security certification is passed by performing the security certification procedure.

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