JP5553584B2 - Navigation device, program, development support device, communication control method - Google Patents

Description

  The present invention relates to a navigation device technology.

  2. Description of the Related Art Conventionally, there is a technology related to a hardware-mounted CAN / CAL module that performs a process of assembling a CAL (CAN Application Layer) message by combining a plurality of messages used for CAN (Controller Area Network) communication.

  Patent Document 1 describes a technique regarding such an information processing apparatus.

Special table 2003-50964 gazette

  However, even if the navigation device connected to the CAN network is equipped with the CAN / CAL module as described above, the consumption used for processing the CAN message flowing through the CAN network while the vehicle key is off. It is difficult to reduce power.

  An object of the present invention is to provide a technique for efficiently processing vehicle control information even when a vehicle key is off in an in-vehicle navigation device.

  In order to solve the above problem, the navigation device of the present invention includes a first arithmetic processing unit and a second arithmetic processing unit that consumes less power than the first arithmetic processing unit. When the second arithmetic processing means receives data from the network and receives data including a predetermined content via the receiving means, the second arithmetic processing means converts the data having a data structure different from the data structure of the received data. Transfer means for converting and transferring to the first arithmetic processing means, the first arithmetic processing means, receiving means for receiving the data transferred by the transfer means, and the transferred data Conversion means for converting to a data structure before conversion in the second arithmetic processing means.

  Further, for example, a navigation device program, the navigation device includes: a first arithmetic processing unit; and a second arithmetic processing unit that consumes less power than the first arithmetic processing unit. And having the data procedure different from the data structure of the received data when the second arithmetic processing means receives a reception procedure for receiving data from the network and data including a predetermined content in the reception procedure. A transfer procedure for converting the data into the first arithmetic processing means and transferring the data to the first arithmetic processing means, and receiving the data transferred by the transfer procedure in the first arithmetic processing means, and the transferred And a conversion procedure for converting the data into the data structure before conversion in the second arithmetic processing means.

  Also, for example, a development support apparatus that supports development of a program for constructing an arithmetic processing unit of a navigation apparatus, wherein the navigation apparatus is compared with a first arithmetic processing unit and the first arithmetic processing unit. Data including a predetermined content in the receiving means in the second arithmetic processing means of the navigation device, and a second arithmetic processing means that consumes less power and a receiving means for receiving data from the network. , A first program for executing a transfer procedure for converting to data having a data structure different from the data structure of the received data and transferring the data to the first arithmetic processing means, and a first of the navigation device A second program for causing the arithmetic processing means to execute a reception procedure for receiving the data transferred by the transfer procedure; A third calculation unit for causing the first calculation processing means of the communication device to perform a conversion procedure for converting the data received in the reception procedure executed by the second program into a data structure before conversion in the second calculation processing means; And a program generation means for generating the program.

  Further, for example, in the communication control method of the navigation device, the navigation device includes a first arithmetic processing unit and a second arithmetic processing unit that consumes less power than the first arithmetic processing unit. The second arithmetic processing means has a data structure different from the data structure of the received data when receiving the data including a predetermined content in the receiving step for receiving data from the network and the receiving step. A transfer step of converting the data into the first arithmetic processing means and transferring the data to the first arithmetic processing means, wherein the first arithmetic processing means receives the data transferred in the transfer step, and the transfer A conversion step of converting the converted data into a data structure before conversion in the second arithmetic processing means.

  ADVANTAGE OF THE INVENTION According to this invention, in the vehicle-mounted navigation apparatus, even if it is during the key of a vehicle being OFF, the technique which processes a vehicle control information efficiently can be provided.

FIG. 1 is a schematic configuration diagram of a navigation device. FIG. 2 is a diagram illustrating a configuration example of a link table. FIG. 3 is a configuration diagram of an arithmetic processing unit of the navigation device. FIG. 4 is a diagram illustrating a functional configuration of the arithmetic processing unit. FIG. 5 is a diagram showing the configuration of a CAN data frame and a UART data frame. FIG. 6 is a flowchart of the CAN data reception process. FIG. 7 is a flowchart of the CAN data transmission process. FIG. 8 is a schematic configuration diagram of the development support apparatus. FIG. 9 is a diagram illustrating a configuration example of a CAN method table. FIG. 10 is a diagram illustrating a configuration example of a communication program table. FIG. 11 is a diagram illustrating a configuration example of the generation program table. FIG. 12 is a diagram illustrating a hardware configuration example of the development support apparatus. FIG. 13 is a flowchart of the program generation process.

  Hereinafter, an in-vehicle navigation device 100 to which an embodiment of the present invention is applied will be described with reference to the drawings.

  FIG. 1 is a schematic configuration diagram of an in-vehicle navigation device 100 to which the present invention is applied. As shown in the figure, the in-vehicle navigation device 100 includes an arithmetic processing unit 1, a display 2, a storage device 3, a voice input / output device 4 (a microphone 41 as a voice input device, and a speaker 42 as a voice output device), an input Device 5, ROM device 6, vehicle speed sensor 7, gyro sensor 8, GPS (Global Positioning System) receiver 9, FM multiplex broadcast receiver 10, beacon receiver 11, and vehicle network connection device 12 It is equipped with.

  The arithmetic processing unit 1 is a central unit that performs various processes. For example, the current location is detected based on information output from the various sensors 7 and 8, the GPS receiver 9, the FM multiplex broadcast receiver 10, or the beacon receiver 11. Further, map data necessary for display is read from the storage device 3 or the ROM device 6 based on the obtained current location information. Further, the read map data is developed in graphics, and a mark indicating the current location is superimposed on the map data and displayed on the display 2.

  In addition, the arithmetic processing unit 1 uses the map data stored in the storage device 3 or the ROM device 6 and the like, and an optimal route (recommended route) that connects the starting point (current location) and the destination instructed by the user. Explore. Further, the user is guided using the speaker 42 and the display 2.

  In addition, the arithmetic processing unit 1 acquires and processes reception information from the vehicle network connection device 12, creates transmission information, and transmits the transmission information to the vehicle network connection device 12.

  The arithmetic processing unit 1 operates in a power saving mode in which only communication with the vehicle network is performed while the key of the mounted vehicle is off (accessory power off).

  The detailed configuration of the arithmetic processing unit 1 will be described later.

  The display 2 is a unit that displays graphics information generated by the arithmetic processing unit 1. The display 2 is configured by a liquid crystal display, an organic EL display, or the like.

  The storage device 3 is composed of at least a readable / writable storage medium such as an HDD (Hard Disk Drive) or a nonvolatile memory card.

  This storage medium stores a link table 200 that is map data (including link data of links constituting roads on a map) necessary for a normal route search device.

  FIG. 2 is a diagram showing the configuration of the link table 200. The link table 200 includes, for each mesh identification code (mesh ID) 201, which is a partitioned area on the map, link data 202 of each link constituting a road included in the mesh area.

  For each link ID 211 that is a link identifier, the link data 202 includes coordinate information 222 of two nodes (start node and end node) constituting the link, a road type 223 indicating the type of road including the link, and a link distance. Link length 224, link travel time 225, link ID (connection link ID) of a link connected to each of two nodes constituting the link, a start connection link, an end connection link 226, and a common name of a road including the link (for example, And so on.

  Here, by distinguishing the start node and the end node for the two nodes constituting the link, the upward direction and the downward direction of the same road are managed as different links. The link travel time 225 may be a link travel time associated with each condition such as date / time and weather.

  Returning to FIG. The voice input / output device 4 includes a microphone 41 as a voice input device and a speaker 42 as a voice output device.

  The microphone 41 acquires sound outside the in-vehicle navigation device 100 such as a voice uttered by a user or another passenger.

  The speaker 42 outputs a message to the user generated by the arithmetic processing unit 1 as a voice. The microphone 41 and the speaker 42 are separately arranged at a predetermined part of the vehicle. However, it may be housed in an integral housing. The vehicle-mounted navigation device 100 can include a plurality of microphones 41 and speakers 42.

  The input device 5 is a device that receives an instruction from the user through an operation by the user. The input device 5 includes a touch panel 51, a dial switch 52, and other hardware switches (not shown) such as scroll keys and scale change keys.

  The touch panel 51 is mounted on the display surface side of the display 2 and can see through the display screen. The touch panel 51 specifies a touch position corresponding to the XY coordinates of the image displayed on the display 2, converts the touch position into coordinates, and outputs the coordinate. The touch panel 51 includes a pressure-sensitive or electrostatic input detection element.

  The dial switch 52 is configured to be rotatable clockwise and counterclockwise, generates a pulse signal for every rotation of a predetermined angle, and outputs the pulse signal to the arithmetic processing unit 1. The arithmetic processing unit 1 obtains the rotation angle from the number of pulse signals.

  The ROM device 6 is composed of at least a readable storage medium such as a ROM (Read Only Memory) such as a CD-ROM or a DVD or an IC (Integrated Circuit) card. For example, image data for map drawing, moving image data, audio data, and the like are stored in the storage medium.

  The vehicle speed sensor 7, the gyro sensor 8, and the GPS receiver 9 are used in the in-vehicle navigation device 100 to detect the current location (own vehicle position).

  The vehicle speed sensor 7 is a sensor that outputs a value used to calculate the vehicle speed. The gyro sensor 8 is composed of an optical fiber gyro, a vibration gyro, or the like, and detects an angular velocity due to the rotation of the moving body. The GPS receiver 9 receives a signal from a GPS satellite and measures the distance between the mobile body and the GPS satellite and the rate of change of the distance with respect to three or more satellites to thereby determine the current position, travel speed, and travel of the mobile body. The direction is measured and transmitted to the arithmetic processing unit 1.

  The FM multiplex broadcast receiver 10 receives an FM multiplex broadcast signal transmitted from an FM multiplex broadcast station. FM multiplex broadcasting includes VICS (Vehicle Information Communication System: Registered Trademark) information, current traffic information, regulatory information, SA / PA (service area / parking area) information, parking information, weather information, and FM multiplex general information. As text information provided by radio stations.

  The beacon receiving device 11 receives signals such as an optical beacon and a radio beacon. Signals such as a beacon include rough current traffic information of VICS information, regulation information, SA / PA (service area / parking area) information, parking lot information, and the like.

  The vehicle network connection device 12 connects the in-vehicle navigation device 100 to a network corresponding to CAN (not shown) that is a vehicle control network standard, and is an ECU (Electronic control unit) that is another vehicle control device connected to the network. ) And a CAN message to communicate with each other.

  As shown in FIG. 3, the arithmetic processing unit 1 includes a CPU (Central Processing Unit) 21, a RAM (Random Access Memory) 22, a ROM (Read Only Memory) 23, an I / F 24, a bus 25, and a sub It has CPU26 and CAN connection I / F27.

  CPU21 performs various main processes which the vehicle-mounted navigation apparatus 100 performs, such as numerical calculation and controlling each device. Further, the CPU 21 can be operated in a power saving state (an operation mode with less power consumption than the normal state) in order to reduce power consumption.

  The RAM 22 stores map data read from the storage device 3, calculation data, and the like.

  The ROM 23 stores programs and data.

  The I / F 24 is an interface that connects various types of hardware to the arithmetic processing unit 1.

  The bus 25 connects the CPU 21, the RAM 22, the ROM 23, and the I / F 24.

  The sub CPU 26 processes the CAN message, transmits information to the CPU 21 via the I / F 24 if necessary according to the content of the CAN message, converts the information output from the CPU 21 into a CAN message, and transmits the CAN message. .

  For example, if the content of the CAN message is the content that the CPU 21 should move to the normal operation state, such as the content that the vehicle door lock has been released, the sub CPU 26 transmits information to the CPU 21.

  The power consumption is lower in the normal operation state of the sub CPU 26 than in the normal operation state of the CPU 21, and the power consumption is lower in the power saving state of the sub CPU 26 than in the power saving state of the CPU 21. It has become. Even when the CPU 21 is in the power saving state, the sub CPU 26 can carry out the above process independently.

  The CAN connection I / F 27 is an interface that connects the vehicle network connection device 12 and the sub CPU 26.

  FIG. 4 is a functional block diagram of the arithmetic processing unit 1.

  As illustrated, the arithmetic processing unit 1 includes a navigation processing unit 101 disposed in the CPU 21, a CAN data translation unit 102, a UART communication unit 103, a sub-side UART communication unit 111 disposed in the sub CPU 26, A side CAN-UART conversion unit 112, a CAN communication unit 113, and a CAN connection I / F 27 are included.

  The navigation processing unit 101 is a central functional unit that performs processing related to various on-vehicle navigation devices 100, and controls other processing units according to the processing content. In addition, the navigation processing unit 101 performs navigation processing (for example, traffic information display, current position display, route search, route guidance, etc.) that is a basic operation of the in-vehicle navigation device 100.

  In addition, the navigation processing unit 101 outputs message information to be transmitted to other ECUs toward the CAN network.

  When the CAN data translating unit 102 receives information on a message transmitted from the navigation processing unit 101 to the CAN network, the CAN data translating unit 102 generates a CAN message, converts it into a UART (Universal Asynchronous Receiver-Transmitter) message, and sends it to the UART communication unit 103. Deliver.

  The UART communication unit 103 transmits the UART message received from the CAN data translation unit 102 to the sub CPU 26.

  When the sub-side UART communication unit 111 receives the UART message transmitted from the CPU 21, the sub-side UART communication unit 111 passes the message to the sub-side CAN-UART conversion unit 112.

  The sub-CAN-UART conversion unit 112 converts the UART message transferred from the sub-side UART communication unit 111 into a CAN message and transfers it to the CAN communication unit 113.

  The CAN communication unit 113 transmits the CAN message received from the sub CAN-UART conversion unit 112 to the vehicle control network via the CAN connection I / F 27.

  Further, as a reverse flow, when receiving a CAN message from the vehicle control network via the CAN connection I / F 27, the CAN communication unit 113 passes the message to the sub-side CAN-UART conversion unit 112.

  The sub-CAN-UART conversion unit 112 converts the CAN message received from the CAN communication unit 113 into a UART message, and passes the message to the sub-side UART communication unit 111.

  The sub-side UART communication unit 111 transmits the UART message received from the sub-side CAN-UART conversion unit 112 to the CPU 21.

  When the UART communication unit 103 receives a UART message from the sub CPU 26, the UART communication unit 103 transmits the UART message to the CAN data translation unit 102.

  Upon receiving the UART message from the UART communication unit 103, the CAN data translation unit 102 converts the message to a CAN message, generates a message to be transferred from the CAN message to the navigation processing unit 101, and transfers the message to the navigation processing unit 101. .

  FIG. 5 is a diagram illustrating a data structure of a CAN data frame 300 that is a CAN message and a data structure of a UART data frame 310 that is a UART message.

  As shown in FIG. 5A, the CAN data frame 300 includes at least a CAN-ID 301, a DLC 302, and a DATA 303.

  The CAN-ID 301 is an identifier for identifying a CAN message in order to prevent message collision in the CAN network.

  The DLC 302 is information such as the data length of the CAN message.

  DATA 303 is information corresponding to the main part of the CAN message.

  Since there are a plurality of types of CAN standards depending on the vehicle body producer (vehicle manufacturer), the information stored in the DATA 303 varies depending on the content of the message and the vehicle manufacturer.

  As shown in FIG. 5B, the UART data frame 310 has at least a UART start bit 311, a UART text field 312, and a UART stop bit 313.

  The UART start bit 311 is information indicating the start position of the UART message according to the characteristics of the UART that performs asynchronous communication.

  The UART text field 312 is information corresponding to the main part of the UART message. In the present embodiment, the CAN data frame 300 is stored in the UART text field 312.

  The UART stop bit 313 is information indicating the end position of the UART message.

  FIG. 6 is a diagram illustrating a flow of CAN data reception processing in which the arithmetic processing unit 1 receives CAN data from another ECU connected to the CAN network.

  First, when the in-vehicle navigation device 100 receives a CAN message via the vehicle network connection device 12, the CAN communication unit 113 of the sub CPU 26 accepts the CAN message received via the CAN connection I / F 27 (step S001). .

  Next, the CAN communication unit 113 passes the received CAN message to the sub-side CAN-UART conversion unit 112, and the sub-side CAN-UART conversion unit 112 converts the transferred CAN message into a UART message (step) S002).

  Specifically, the sub-CAN-UART conversion unit 112 adds a UART start bit 311 and a UART stop bit 313 to the delivered CAN message, and sends a UART message corresponding to the UART data frame 310. Create Of course, the present invention is not limited to this, and a table storing information for converting CAN messages and UART messages to each other in accordance with the CAN and UART standards set in the sub-side CAN-UART conversion unit 112 in advance is stored. The side CAN-UART conversion unit 112 may refer to the received CAN message and convert it to a UART message.

  Next, the sub-side UART communication unit 111 transmits the UART message created in step S002 to the CPU 21 (step S003).

  Next, the UART communication unit 103 of the CPU 21 receives the UART message transmitted in step S003 (step S004).

  Next, the CAN data translating unit 102 of the CPU 21 receives the UART message received in step S004 and converts it into a CAN message (step S005).

  Specifically, the CAN data translation unit 102 receives the UART message received in step S004, acquires the information of the UART text field 312 obtained by removing the UART start bit 311 and the UART stop bit 313 from the UART message, This is a CAN message. Of course, the present invention is not limited to this. A table storing information for converting CAN messages and UART messages according to the CAN and UART standards set in the CAN data translation unit 102 in advance is stored in the CAN data translation unit. The received UART message may be converted into a CAN message with reference to 102.

  Next, the CAN data translation unit 102 translates the CAN message converted in step S005 (step S006).

  Specifically, the CAN data translation unit 102 converts the CAN message into information that can be interpreted by the navigation processing unit 101. For example, when a certain CAN message is received, the CAN message is interpreted according to the type of CAN message and the content of the CAN message, and converted into vehicle control information such as “door unlocked”.

  Next, the navigation processing unit 101 performs processing using the information translated in step S006 (step S007).

  For example, when the navigation processing unit 101 receives information indicating that “the door is unlocked”, the navigation processing unit 101 starts processing according to the information, for example, recording of vehicle control information, boot processing of the in-vehicle navigation device 100, and the like. To implement.

  The above is the flow of the CAN data reception process.

  By the CAN data reception process, the in-vehicle navigation device 100 can receive and process the CAN message flowing through the CAN network by the sub CPU 26.

  The flow of such CAN data reception processing is not limited to the above flow. For example, in step S003, only when the sub-CAN-UART conversion unit 112 receives a CAN message having a predetermined content, the UART message is displayed. It may be modified so as to be created and transferred to the sub-side UART communication unit 111.

  By modifying in this way, it is possible to narrow down the messages received by the CPU 21 among the CAN messages flowing through the CAN network. Thereby, for example, in a state where the key of the vehicle on which the vehicle-mounted navigation device 100 is mounted is off, it is possible to ensure a long time for operating the CPU 21 in the power saving state.

  Next, the flow of the CAN data transmission process in FIG. 7 will be described.

  The CAN data transmission process is a process when the in-vehicle navigation device 100 transmits a CAN message to another ECU connected to the CAN network.

  First, the navigation processing unit 101 outputs information on a message to be transmitted to the CAN network (step S101).

  Next, when the CAN data translating unit 102 receives information on a message to be transmitted from the navigation processing unit 101 to the CAN network, the CAN data translating unit 102 generates a CAN message, converts it into a UART message, and delivers it to the UART communication unit 103 (step). S102).

  Specifically, after creating the CAN message, the CAN data translating unit 102 adds a UART start bit 311 and a UART stop bit 313 before and after the CAN message, and sends a UART message along the UART data frame 310. Create and pass to UART communication unit 103. Of course, the present invention is not limited to this. A table storing information for converting CAN messages and UART messages according to the CAN and UART standards set in the CAN data translation unit 102 in advance is stored in the CAN data translation unit. 102 may be referred to, and the transferred CAN message may be converted into a UART message.

  Next, the UART communication unit 103 transmits the UART message received from the CAN data translation unit 102 to the sub CPU 26 (step S103).

  Next, when receiving the UART message transmitted from the CPU 21 in step S103, the sub UART communication unit 111 of the sub CPU 26 passes the message to the sub CAN-UART conversion unit 112 (step S104).

  Next, the sub-side CAN-UART conversion unit 112 converts the UART message transferred from the sub-side UART communication unit 111 into a CAN message, and transfers it to the CAN communication unit 113 (step S105).

  Specifically, the sub CAN-UART conversion unit 112 acquires information of the UART text field 312 from which the UART start bit 311 and the UART stop bit 313 are removed from the UART message, and uses this as the CAN message. . Of course, the present invention is not limited to this, and a table storing information for converting CAN messages and UART messages to each other in accordance with the CAN and UART standards set in the sub-side CAN-UART conversion unit 112 in advance is stored. The side CAN-UART conversion unit 112 may refer to the received UART message and convert it to a CAN message.

  Next, the CAN communication unit 113 transmits the CAN message received from the sub-CAN-UART conversion unit 112 to the vehicle control network via the CAN connection I / F 27 (step S106).

  The above is the flow of the CAN data transmission process.

  Through the CAN data transmission process, the arithmetic processing unit 1 can transmit a CAN message via the sub CPU 26 to another ECU connected to the CAN network.

  Further, when the accessory power supply of the vehicle on which the vehicle-mounted navigation device 100 is mounted is off, the operation of the CPU 21 is stopped and the sub CPU 26 is started in the power saving state. Since the time to be used can be kept to a minimum, the power source of the vehicle can be used efficiently.

  <Program Development Support Device> From here, the CAN data translating unit 102, the UART communication unit 103, the sub-side UART communication unit 111, and the sub-side CAN that realize the above-described CAN data reception processing and CAN data transmission processing. A development support apparatus that supports development of a program for constructing the -UART conversion unit 112 will be described with reference to FIGS.

  FIG. 8 is a diagram showing a schematic configuration of the development support apparatus 410.

  As illustrated, the development support apparatus 410 includes a storage unit 420, a control unit 430, a communication unit 440, an input unit 450, and an output unit 460.

  The storage unit 420 includes a CAN system information storage area 421, a communication program information storage area 422, and a generation program storage area 423.

  The CAN system information storage area 421 stores a CAN system table 500 that stores information related to the CAN system.

  FIG. 9 shows a configuration example of the CAN method table 500.

  The record stored in the CAN method table 500 includes a vehicle manufacturer 501 and a CAN method 502 associated with the vehicle manufacturer 501.

  The vehicle manufacturer 501 is information for identifying the vehicle manufacturer.

  The CAN method 502 is information for specifying a different CAN method because the type of CAN adopted for each vehicle manufacturer is different.

  The communication program information storage area 422 stores a communication program table 550 that stores information related to communication programs.

  FIG. 10 shows a configuration example of the communication program table 550.

  The record stored in the communication program table 550 includes a processor model number 551 and a communication program name 552.

  The processor model number 551 is information for identifying the type of the CPU 21 or the sub CPU 26.

  The communication program name 552 is a name of a communication program used in the UART communication unit 103 or the sub-side UART communication unit 111.

  The generated program storage area 423 stores a generated program table 600 that stores generated programs.

  FIG. 11 shows a configuration example of the generation program table 600.

  The record stored in the generation program table 600 includes a serial number 601, a CAN data translation program 602, a UART communication program 603, a sub-side UART communication program 604, and a CAN-UART conversion program 605.

  The serial number 601 is a management number for identifying a generated series of programs.

  The CAN data translation program 602 is a program used as the CAN data translation unit 102.

  The UART communication program 603 is a program used as the UART communication unit 103.

  The sub-side UART communication program 604 is a program used as the sub-side UART communication unit 111.

  The CAN-UART conversion program 605 is a program used as the CAN-UART conversion unit 112.

  The control unit 430 includes an input reception unit 431, an output configuration unit 432, and a program generation unit 433.

  The input receiving unit 431 is a processing unit that receives an instruction input from the user via the input unit 450 and transfers this to each processing unit.

  The output configuration unit 432 is a functional unit that configures a screen to be output and causes the output unit 460 to display the screen. Screen data that is requested to be displayed on the output unit 460 and display candidates are received, and a screen drawing command is generated so that an image, message information, and the like are drawn by a designated drawing method. Then, the generated command is transmitted to the output unit 460.

  The program generation unit 433 generates, as a software program, a program for constructing the CAN data translation unit 102, the UART communication unit 103, the sub-side UART communication unit 111, and the sub-side CAN-UART conversion unit 112. The data is stored in the generation program table 600 of the storage unit 420 of the development support apparatus 410.

  FIG. 12 is a diagram illustrating a hardware configuration of the development support apparatus 410 according to the present embodiment.

  In the present embodiment, the development support apparatus 410 is a computer such as a client PC (personal computer), a workstation, a server apparatus, various mobile phone terminals, and a PDA (Personal Digital Assistant).

  The development support apparatus 410 includes an input device 451, an output device 452, an arithmetic device 453, a main storage device 454, an external storage device 455, a communication device 456, and a bus 457 that connects the respective devices to each other. Have.

  The input device 451 is a device that receives input from, for example, a keyboard, mouse, touch pen, or other pointing device.

The output device 452 is a device that performs display such as a display, for example. The arithmetic device 453 is an arithmetic device such as a CPU (Central Processing Unit).

  The main storage device 454 is a memory device such as a RAM (Random Access Memory).

  The external storage device 455 is a nonvolatile storage device such as a hard disk device or a flash memory.

  The communication device 456 is a communication device such as a wireless communication unit that performs wireless communication via an antenna.

  The input reception unit 431, the output configuration unit 432, and the program generation unit 433 of the development support apparatus 410 are realized by a program that causes the arithmetic device 453 of the development support apparatus 410 to perform processing.

  This program is stored in the main storage device 454 or the external storage device 455, loaded onto the main storage device 454 for execution, and executed by the arithmetic device 453.

  The storage unit 420 of the detection information processing apparatus 410 is realized by the main storage device 454 or the external storage device 455 of the development support apparatus 410.

  The communication unit 440 of the development support device 410 is realized by the communication device 456 of the development support device 410.

  The input unit 450 of the development support apparatus 410 is realized by the input device 451 of the development support apparatus 410.

  The output unit 460 of the development support apparatus 410 is realized by the output device 452 of the development support apparatus 410.

  Next, the flow of the program generation process in this embodiment will be described based on FIG.

  FIG. 13 is a flowchart showing the flow of the program generation process.

  First, the program generation unit 433 receives the designation of the target automobile manufacturer from the operator via the input unit 450 (step S201).

  Next, the program generation unit 433 specifies the CAN method according to the automobile manufacturer received in step S201 (step S202).

  Specifically, the program generation unit 433 specifies a record in which the value of the vehicle manufacturer 501 matches the vehicle manufacturer accepted in step S201 from the records stored in the CAN method table 500. Then, the CAN method 502 of the specified record is read and specified as the CAN method.

  Next, the program generation unit 433 generates a program for constructing the CAN data translation unit 102 corresponding to the CAN method specified in step S202 (step S203).

  Specifically, the program generation unit 433 performs conversion between the CAN message and the information indicated by the CAN message and conversion between the CAN message and the UART message according to the CAN method specified in step S202. A program for constructing the CAN data translation unit 102 is generated as a software program.

  Then, the program generation unit 433 stores the generated program for constructing the CAN data translation unit 102 in the CAN data translation program 602 of the generation program table 600.

  Next, the program generation unit 433 receives specification of the model number of the sub CPU 26 from the operator via the input unit 450 (step S204).

  Next, the program generation unit 433 generates a program for constructing the sub-side UART communication unit 111 of the sub CPU 26 according to the model number of the sub CPU received in step S204 (step S205).

  Specifically, the program generation unit 433 identifies a record in which the value of the processor model number 551 matches the model number of the sub CPU received in step S204 from the records stored in the communication program table 550. Then, the communication program name 552 of the specified record is read, and the program corresponding to the program name is specified as a program for constructing the sub-side UART communication unit 111.

  Then, the program generation unit 433 generates the identified program as a software program that realizes the sub-side UART communication unit 111 for performing UART communication with the CPU 21. Then, the program generation unit 433 stores the generated program of the sub-side UART communication unit 111 in the sub-side UART communication program 604 of the generation program table 600.

  Next, the program generation unit 433 receives the designation of the model number of the CPU 21 from the operator via the input unit 450 (step S206).

  Next, the program generation unit 433 generates a program for constructing the UART communication unit 103 of the CPU 21 according to the CPU model number received in step S206 (step S207).

  Specifically, the program generation unit 433 identifies a record in which the value of the processor model number 551 matches the CPU model number received in step S206 from the records stored in the communication program table 550. Then, the communication program name 552 of the specified record is read, and a program corresponding to the program name is specified as a program for constructing the UART communication unit 103.

  Then, the program generation unit 433 generates the identified program as a software program that implements the UART communication unit 103 for performing UART communication with the sub CPU 26. Then, the program generation unit 433 stores the generated program of the UART communication unit 103 in the UART communication program 603 of the generation program table 600.

  Next, the program generation unit 433 stores a software program for realizing the predetermined sub-side CAN-UART conversion unit 112 in the CAN-UART conversion program 605 of the generation program table 600 (step S208).

  The above is the flow of the program generation process.

  The user of the development support apparatus 410 reads the programs stored in the CAN data translation program 602, the UART communication program 603, the sub-side UART communication program 604, and the CAN-UART conversion program 605 in the generation program table 600. be able to.

  The user of the development support apparatus 410 stores, for example, the programs stored in the CAN data translation program 602 and the UART communication program 603 in the storage device 3 of the in-vehicle navigation device 100, and the sub-side UART communication program 604 By storing the programs stored in the CAN-UART conversion program 605 in the ROM in the sub CPU 26, the arithmetic processing unit 1 can be realized.

  In other words, by executing such a program generation process, the development support apparatus 100 allows the CAN data translation unit 102, the UART communication unit 103, and the sub-side UART included in the arithmetic processing unit 1 of the above-described in-vehicle navigation apparatus 100. It can be said that a program for constructing the communication unit 111 and the sub-side CAN-UART conversion unit 112 can be generated.

  The embodiment of the present invention has been described above.

  According to the embodiment of the present invention, the in-vehicle navigation device 100 can delegate monitoring of messages flowing through the CAN network to the sub CPU 26 when the key of the mounted vehicle is off. Specifically, the CPU 21 that consumes more power than the sub CPU 26 can be operated in the power saving mode, and the power consumption during key-off of the vehicle can be saved.

  In addition, by using such a vehicle-mounted navigation device 100, for example, the startup processing of the vehicle-mounted navigation device 100 can be performed at a stage before the vehicle accessory power is turned on, such as the timing when the vehicle door lock is released. It becomes possible to start, and the use start timing of the vehicle-mounted navigation device can be advanced.

  The present invention is not limited to the above embodiment. The above embodiment can be variously modified within the scope of the technical idea of the present invention.

  For example, in the above-described embodiment, the program generation process is performed in the development support apparatus 410. However, the present invention is not limited thereto, and the program generation process may be performed in the in-vehicle navigation apparatus 100.

  By doing in this way, when the vehicle-mounted navigation device 100 is mounted on a vehicle, it is possible to generate a program according to the manufacturer of the mounted vehicle. That is, it is possible to obtain an effect that the vehicle-mounted navigation device 100 can be replaced when the vehicle on which the vehicle-mounted navigation device 100 is mounted is changed by replacement.

  Moreover, in the said embodiment, although communication between CPU21 and sub CPU26 is performed by the UART message, it is not restricted to this.

  For example, the communication between the CPU 21 and the sub CPU 26 may be other communication standards such as USART (Universal Synchronous Asynchronous Receiver Transmitter), RS-232C (official name is ANSI / TIA / EIA-232-F-1997), etc. Communication may be used.

  In this way, communication between the CPU 21 and the sub CPU 26 can be flexibly realized.

  In the above embodiment, an example in which the present invention is applied to a vehicle-mounted navigation device has been described. However, the present invention can also be applied to a navigation device other than a vehicle-mounted navigation device.

1: arithmetic processing unit, 2: display, 3: storage device, 4: voice input / output device, 5: input device, 6: ROM device, 7: vehicle speed sensor, 8: gyro sensor, 9: GPS receiver, 10: FM multiplex broadcast receiver, 11: beacon receiver, 12: vehicle network connection device, 21: CPU, 22: RAM, 23: ROM, 24: I / F, 25: bus, 26: sub CPU, 27: CAN connection I / F, 41: microphone, 42: speaker, 51: touch panel, 52: dial switch, 100: in-vehicle navigation device, 101: navigation processing unit, 102: CAN data translation unit, 103: UART communication unit, 111: sub Side UART communication unit, 112: sub-side CAN-UART conversion unit, 113: CAN communication unit, 200: link table, 300: AN data frame, 310: UART data frame, 410: development support device, 420: storage unit, 430: control unit, 440: communication unit, 450: input unit, 451: input device, 452: output device, 453: arithmetic unit 454: Main storage device 455: External storage device 456: Communication device 457: Bus 460: Output unit 500: CAN system table 550: Communication program table 600: Generation program table

Claims (10)

A first arithmetic processing means;
A second arithmetic processing means that consumes less power than the first arithmetic processing means;
With
The second arithmetic processing means is
Receiving means for receiving data from the network;
A transfer unit that receives data including a predetermined content via the receiving unit, converts the data into a data having a data structure different from the data structure of the received data, and transfers the data to the first arithmetic processing unit. ,
The first arithmetic processing means is
Receiving means for receiving the data transferred by the transferring means;
Conversion means for converting the transferred data into a data structure before conversion in the second arithmetic processing means,
A navigation device characterized by that. The navigation device according to claim 1,
The first arithmetic processing means further includes:
Upon receiving the transferred data, start the navigation device activation process,
A navigation device characterized by that. The navigation device according to claim 2,
The navigation device is mounted on a vehicle,
The predetermined content included in the data received by the receiving means is content for notifying that the door of the vehicle has been unlocked.
A navigation device characterized by that. A navigation device program comprising:
The navigation device includes a first arithmetic processing unit, and a second arithmetic processing unit that consumes less power than the first arithmetic processing unit,
In the second arithmetic processing means,
A receiving procedure for receiving data from the network;
A transfer procedure for receiving data including a predetermined content in the reception procedure and converting the data into data having a data structure different from the data structure of the received data and transferring the data to the first arithmetic processing means; ,
In the first arithmetic processing means,
A reception procedure for receiving data transferred by the transfer procedure;
A conversion procedure for converting the transferred data into a data structure before conversion in the second arithmetic processing means;
A program characterized by having an implementation. The program according to claim 4, further comprising:
When the first arithmetic processing means receives the transferred data, the start processing of the navigation device is started.
A program characterized by that. The program according to claim 5,
The navigation device is mounted on a vehicle,
The predetermined content included in the data received by the reception procedure performed by the first arithmetic processing means is content for notifying that the door of the vehicle has been unlocked,
A program characterized by that. A development support device that supports development of a program for constructing an arithmetic processing means of a navigation device,
The navigation device includes a first arithmetic processing unit, a second arithmetic processing unit that consumes less power than the first arithmetic processing unit, and a receiving unit that receives data from a network. ,
When the second arithmetic processing unit of the navigation device receives data including predetermined contents in the receiving unit, the data is converted into data having a data structure different from the data structure of the received data, and the first arithmetic processing unit A first program that causes a transfer procedure to be transferred to the means;
A second program for causing the first arithmetic processing means of the navigation device to perform a reception procedure for receiving the data transferred by the transfer procedure;
The first arithmetic processing means of the navigation device causes the first arithmetic processing means to perform a conversion procedure for converting data received in the reception procedure executed by the second program into a data structure before conversion in the second arithmetic processing means. Three programs,
Program generating means for generating
A development support apparatus comprising: The development support apparatus according to claim 7, further comprising:
Receiving means for receiving information specifying the type of the second arithmetic processing means of the navigation device;
The program generation unit generates the first program according to the information received by the reception unit.
Development support device characterized by that. The development support apparatus according to claim 7, further comprising:
Receiving means for receiving information specifying the type of the first arithmetic processing means of the navigation device;
The program generation unit generates the second program according to the information received by the reception unit.
Development support device characterized by that. A communication control method for a navigation device, comprising:
The navigation device includes a first arithmetic processing unit, and a second arithmetic processing unit that consumes less power than the first arithmetic processing unit,
The second arithmetic processing means is
A receiving step for receiving data from the network;
When receiving data including a predetermined content in the receiving step, a transfer step of converting to data having a data structure different from the data structure of the received data and transferring the data to the first arithmetic processing means is performed. ,
The first arithmetic processing means is
A receiving step for receiving the data transferred by the transferring step;
A conversion step of converting the transferred data into a data structure before conversion in the second arithmetic processing means;
A communication control method characterized by the above.

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