JP4949502B2 - Navigation device - Google Patents

Description

  The present invention relates to a navigation device that is mounted on a vehicle and guides a user to a destination, for example, and more particularly to a technique for connecting an external device to the navigation device.

  A recent navigation apparatus is configured to connect a mobile device typified by a mobile phone and access a network via the mobile device. Such mobile devices are sold by various manufacturers, but the interface specifications of mobile devices are often different for each manufacturer or model. Therefore, it is difficult for the navigation device to support all functions of all models of mobile devices, and there is a situation where only some functions are supported.

  On the other hand, for the support status of functions that can be executed by the navigation device communicating with the mobile device, refer to the instruction manual of the mobile device, refer to WEB etc. from a personal computer at home, or call the manufacturer by telephone etc. You cannot know it unless you ask directly. Therefore, it is difficult for the user to check the support status of the functions that can be executed from the navigation device while moving by any method.

  As a technique for making a mobile device compatible with a plurality of types of specifications, for example, in Patent Document 1, even when only a single communication partner information is registered for each communication partner, the communication partner is the same. A portable communication device capable of performing automatic dialing using a memory dial function without being conscious of whether or not in Japan is disclosed. In this portable communication device, the internal memory is provided with an address book table for associating and registering a communication partner, a telephone number, and a country flag indicating the country where the communication partner is located. The call processing unit compares the country flag selected by the memory dial function with the country that can be connected to the line obtained from the RF module, and if they match, it is determined as a domestic call and registered in the address book table. Make a dialing call with the same phone number. On the other hand, if they do not match, it is determined that the call is an international call, and the international number and the country code are added to the telephone number registered in the address book table for dialing.

JP 2001-061000 A

  As described above, it is difficult for the navigation device to support all functions of all models of external devices (mobile devices), and there is a situation where only some functions are supported. Thus, it is desired to develop a technology that can easily cope with external devices connected to the outside.

  The present invention has been made to meet the above-described demand, and an object of the present invention is to provide a navigation device capable of confirming a function support status of an external device.

The navigation device according to the present invention includes an input means for inputting a destination, a map information acquisition means for acquiring map data, a position / azimuth detection means for detecting the position of the vehicle, and a position detected by the position / azimuth detection means. A route search means for calculating a route from the input means to the destination inputted based on the map data acquired by the map information acquisition means, a communication means for communicating with an external device, and the external device Display means for displaying a list of function support statuses indicating the support status of a plurality of functions for each model .

According to the present invention, since the display means is configured to display the list of function support statuses indicating the support status of a plurality of functions for each model of the external device, it is also possible to display the function support status of the external device. In this case, the user can check the function support status of the external device.

It is a block diagram which shows the functional structure of the navigation apparatus which concerns on Embodiment 1 of this invention. It is a block diagram which shows the hardware constitutions of the navigation apparatus for implement | achieving each function shown in FIG. It is a figure which shows the structure of the table used with the navigation apparatus concerning Embodiment 1 of this invention. It is a figure which shows the example of the sequence used with the navigation apparatus which concerns on Embodiment 1 of this invention. It is a flowchart which shows the communication change process performed by the communication process change means of the navigation apparatus which concerns on Embodiment 1 of this invention. It is a flowchart which shows the detail of the model name automatic determination process performed by step ST17 of FIG. 5 is a flowchart showing display processing performed by a display unit in response to a user operation in the navigation device according to Embodiment 1 of the present invention. It is a figure which shows the top menu screen displayed with the navigation apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the connected apparatus list screen displayed with the navigation apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the carrier provider list screen displayed with the navigation apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the manufacturer list screen displayed with the navigation apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the model name list screen displayed with the navigation apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the function support condition screen displayed with the navigation apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the screen in which the function support condition displayed with the navigation apparatus which concerns on Embodiment 1 of this invention is displayed by changing a display form. It is a figure which shows a list screen when apparatuses other than a mobile telephone are selected as an external apparatus with the navigation apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the example of a display of the telop displayed with the navigation apparatus which concerns on Embodiment 1 of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a block diagram showing a functional configuration of a navigation device according to Embodiment 1 of the present invention. This navigation apparatus comprises a map information acquisition means 1, a position / orientation detection means 2, an input means 3, a route search means 4, a display means 5, an audio output means 6, a communication means 7 and a communication processing change means 8.

  The map information acquisition means 1 acquires map data as map information. The map data acquired by the map information acquisition means is sent to the position / orientation detection means 2, the route search means 4, and the display means 5. The position / orientation detection means 2 detects the position and direction of the vehicle on which the navigation device is mounted based on the map data sent from the map information acquisition means 1. Position / orientation data representing the position and orientation detected by the position / orientation detection means 2 is sent to the route search means 4.

  The input means 3 is used for inputting a model name of the external device 207 to be described later, in addition to route search information such as a destination and a waypoint. Information input by the input unit 3 is sent to the route search unit 4, the display unit 5, the communication unit 7, and the communication processing change unit 8. As will be described in detail later, this input means 3 can set whether or not to press a button provided corresponding to each function of the external device 207 based on the function support status stored in the table 9. It is configured to be able to.

  The route search unit 4 calculates the optimum route from the position detected by the position / orientation detection unit 2 to the destination input by the input unit 3 based on the map data sent from the map information acquisition unit 1. . The route data representing the optimum route calculated by the route search means 4 is sent to the display means 5.

  The display means 5 displays a map around the current position of the vehicle, an optimum route, etc. based on the map data sent from the map information acquisition means 1 and the route data sent from the route search means 4, and is also input Various menus are displayed in response to the input from the means 3. The display unit 5 displays a function support status or various messages corresponding to the model name input from the input unit 3. The contents displayed on the display means 5 will be described in detail later. The voice output means 6 outputs the information displayed by the display means 5 or information related to this information by voice.

  The communication unit 7 executes communication processing for controlling communication performed with the external device 207 such as a mobile phone. The communication process changing unit 8 changes the communication process performed by the communication unit 7 to a communication process corresponding to each model of the external device 207. The communication processing change means 8 includes a table 9 that stores function support statuses of a plurality of models of external devices. Details of the table 9 and details of processing performed by the communication processing changing means 8 will be described later.

  Next, the hardware configuration of the navigation apparatus for realizing each function shown in FIG. 1 will be described with reference to the block diagram shown in FIG.

  The navigation device includes a medium 201, a drive 202, a GPS (Global Positioning System) receiver 203, a gyro 204, a vehicle speed signal acquisition unit 205, an operation unit 206, an external device (mobile phone) 207, an interface circuit 208, a navigation ECU (Electronic Control). Unit; electronic control unit) 209, memory 210, display 211, and speaker 212.

  The medium 201 is composed of a storage medium such as a DVD (Digital Versatile Disk) or a hard disk (Hard disk). Map data stored in the medium 201 is read by the drive 202. The drive 202 reads the map data stored in the medium 201 and sends it to the navigation ECU 209 via the interface circuit 208. The map information acquisition means 1 described above is mainly composed of a medium 201 and a drive 202.

  The GPS receiver 203 detects its absolute position and absolute direction. The absolute position and the absolute direction detected by the GPS receiver 203 are sent to the navigation ECU 209 via the interface circuit 208 as position / direction data. The gyro 204 detects an angular velocity when the vehicle turns. The angular velocity detected by the gyro 204 is sent to the navigation ECU 209 via the interface circuit 208 as angular velocity data.

  The vehicle speed signal acquisition unit 205 acquires a vehicle speed signal (vehicle speed pulse) sent from a vehicle (not shown) every predetermined travel distance. The vehicle speed signal acquired by the vehicle speed signal acquisition unit 205 is sent to the navigation ECU 209 via the interface circuit 208 as speed data. The above-described position / orientation detection means 2 mainly includes a GPS receiver 203, a gyro 204, and a vehicle speed signal acquisition unit 205.

  The operation unit 206 includes a remote controller, a button, a touch panel, or the like for receiving user operation input. Information input from the operation unit 206 is sent as operation data to the navigation ECU 209 via the interface circuit 208. The input means 3 described above is mainly composed of the operation unit 206.

  The external device 207 corresponds to the communication means 7 shown in FIG. The external device 207 acquires traffic information from an information center (not shown) and sends the traffic information to the navigation ECU 209 via the interface circuit 208.

  In accordance with a control signal from the navigation ECU 209, the interface circuit 208 reads the map data read from the drive 202, the position and orientation data sent from the GPS receiver 203, the angular velocity data sent from the gyro 204, and the vehicle speed signal acquisition unit 205. Control for sending the angular velocity data sent from the control unit and the operation data sent from the operation unit 206 to the navigation ECU 209 is performed.

  The navigation ECU 209 writes the map data, the position / orientation data, the angular velocity data, the vehicle speed data, and the operation data sent from the interface circuit 208 to the memory 210, reads these data from the memory 210, and uses the read data. Perform various processes. The route search unit 4, a part of the display unit 5, the communication unit 7, and the communication processing change unit 8 described above mainly include a navigation ECU 209 and a memory 210. The table 9 is stored in the memory 210.

  The display 211 is composed of, for example, a liquid crystal display, and displays a map, an optimum route, a vehicle mark, a guidance message, a menu screen, and the like according to data sent from the navigation ECU 209. The display 211 constitutes another part of the display unit 5. The speaker 212 outputs a message displayed on the display 211 or a message related to the message by voice according to data sent from the navigation ECU 209. The audio output means 6 described above is mainly composed of a speaker 212.

  FIG. 3 is a diagram showing the structure of the table 9 used in the navigation device according to the first embodiment. This table 9 is formed inside the communication process changing means 8, and the table 9 stores a model dependence list.

  The model-dependent list includes items such as “device”, “major category”, “medium category”, “small category”, “function support”, “restrictions”, and “sequence corresponding number”. “Device” indicates the type of external device, and a mobile phone, a memory card, a portable AV (Audio Visual) device or a storage medium (media), and music files, image / video files, etc. stored in these devices are designated. .

  Hereinafter, for example, when the device is a mobile phone, carrier providers A1, A2,... Are stored in the “major classification”. In the “medium category”, mobile phone manufacturers B1, B2,... Are stored. “Sub-classification” stores model names C1, C2,. In “Function Support”, the status of function support is stored for each model. In “Restrictions”, restrictions that alert the user are stored for each model. The “device”, “major category”, “medium category”, “small category”, “function support”, and “restrictions” can be displayed by the display means 5.

  The “sequence corresponding number” stores a number assigned to a program for realizing a communication procedure (sequence) used in each model, that is, a sequence corresponding number. The program is stored in the communication process changing means 8. Thereby, when a model is specified, it can change to the process by a corresponding program from the sequence corresponding number matched with the model.

  FIG. 4A to FIG. 4D are diagrams showing examples of sequences realized by a program stored in the communication process changing unit 8. The sequences corresponding to the sequence correspondence numbers 1 to 4 are different in detail, and this difference occurs depending on the model or manufacturer. For example, when the function support status is checked against the sequence correspondence numbers in the table 9 shown in FIG. 3, only the minor category “C2” of the sequence correspondence number 4 indicates that a three-party call cannot be made.

  Specifically, in the sequence correspondence number 4 shown in FIG. 4D, in response to the notification of “data transmission command: yyy” from the mobile phone, the navigation device shifts to the data communication mode. In the data communication mode, the “three-party call command: @@@” transmitted subsequently from the mobile phone cannot be processed, and the navigation device notifies the mobile phone of “failure command: eeee”. As a result, the function of the three-party call cannot be executed from the viewpoint of the user, and the user receives the function support status “△” shown in FIG. 3 and the failure command “No three-party call” as a restriction. Can recognize the cause. Such restrictions include, for example, restrictions due to menu operations such as the inability to transition from one mode to another, unsupported functions, etc. The contents and reasons for the restrictions are arbitrary. Can be determined.

  Next, the operation of the navigation apparatus configured as described above according to the first embodiment of the present invention will be described with reference to the flowchart shown in FIG. 5, focusing on the communication change process executed by the communication process change means 8. While explaining.

  In the communication change process, first, it is detected whether or not the external device 207 is connected (step ST11). If the connection of the external device 207 is not detected in this step ST11, although not shown in FIG. 5, the processes after step ST12 are not executed, and the communication change process is terminated. On the other hand, when the connection of the external device 207 is detected in step ST11, it is next checked whether or not the model name of the external device 207 has been input (step ST12). The model name can be input directly by the user by operating the input means 3 or can be input from a menu screen (FIGS. 8 to 12) described later.

  If it is determined in step ST12 that the model name of the external device 207 has not been input, the process proceeds to step ST17. On the other hand, if it is determined in step ST12 that the model name of the external device 207 has been input, it is then checked whether or not the input model name exists in the table 9 (step ST13).

  If it is determined in step ST13 that the input model name does not exist in the table 9, the process proceeds to step ST17. On the other hand, if it is determined in step ST13 that the input model name exists in the table 9, it is checked whether the sequence corresponding number in the table 9 is valid (step ST14). Specifically, it is checked whether or not the sequence correspondence number corresponding to the input model name is stored in the “sequence correspondence number” column of the table 9.

  If it is determined in step ST14 that the sequence correspondence number is not valid, that is, it is invalid, the process proceeds to step ST17. On the other hand, when it is determined in step ST14 that the sequence correspondence number is valid, the communication processing in the communication means 7 is switched to the processing by the program corresponding to the sequence correspondence number (step ST15).

  Next, it is checked whether or not the sequence corresponding to the sequence correspondence number is satisfied (step ST16). That is, it is checked whether or not communication with the external device 207 can be performed according to the sequence (sequence shown in FIG. 4) indicated by the sequence corresponding number. If it is determined in step ST16 that the sequence corresponding number is not in accordance with the sequence, the process proceeds to step ST17. On the other hand, if it is determined in step ST16 that the sequence corresponds to the sequence corresponding to the sequence number, the communication change process ends.

  In step ST17, automatic model name determination processing for automatically determining the model name of the external device 207 is performed. In step ST17, if the input model name does not exist in the table 9, or if the sequence of the input model name does not match the sequence of the connected external device 207, this is indicated. The display means 5 is notified via the communication means 7. As a result, for example, as shown in FIG. 16A, the display unit 5 displays a telop composed of the words “I will specify the model of the connected device”. Details of the processing performed in step ST17 will be described later.

  In the communication change process described above, the communication process change unit 8 selects a sequence that can be executed and a sequence that cannot be executed, and notifies the display unit 5 of the selection result via the communication unit 7 for display. The means 5 can be configured to set validity or invalidity of a button displayed on the screen based on the received sorting result.

  Next, the details of the model name automatic determination process performed in step ST17 of the communication change process described above will be described with reference to the flowchart shown in FIG.

  In the model name automatic determination process, first, a model name of a model whose sequence executed up to the present time matches is set (step ST21). By default, model names corresponding to all sequences are set. Next, one sequence to be executed with the external device 207 is generated (step ST22). Next, it is checked whether or not the model has a sequence that matches the sequence generated in step ST22 (step ST23).

  If it is determined in step ST23 that the model has a sequence that matches the generated sequence, then the model name of the model that matches the sequence is set (step ST24). On the other hand, if it is determined in step ST23 that the model does not have a sequence that matches the generated sequence, the process in step ST24 is skipped. Next, it is checked whether or not the processing for all models having a sequence has been completed (step ST25). If it is determined in step ST25 that the processing for all models having a sequence has not been completed, the process returns to step ST23 to perform processing for the next model.

  On the other hand, if it is determined in step ST25 that the processing for all models having a sequence has been completed, it is then checked whether there is one model that matches the sequence (step ST26). If it is determined in step ST26 that there is a model whose sequence matches, it is estimated that the model is a connected model, and a program corresponding to the model is switched (step ST27). When there are a plurality of models with matching sequences, the program can be switched to a program corresponding to any one model.

  In step ST26, the model name of the model corresponding to the switched program is notified to the display means 5 via the communication means 7. As a result, for example, as shown in FIG. 16B, a telop composed of the words “It operates assuming that the model is T31W” is displayed on the display unit 5. If only one model can be estimated in step ST27, a telop “Model operates as T31W” is played as shown in FIG. 16 (d), and the display is as if the model has been specified. You can also In this case, the display means 5 confirms the function support status with reference to the table 9 and, as shown in FIG. 16 (d), for example, sends a telop with the addition of the words “This model cannot perform data communication”. You can also. Furthermore, for a function that cannot be operated, a button corresponding to the function can be invalidated.

  If it is determined in step ST26 that there is no model with the same sequence, it is determined that the function cannot be supported for that model, and a message to that effect is output (step ST28). In other words, the display means 5 is notified via the communication means 7 that the function cannot be supported for the model. As a result, for example, as shown in FIG. 16C, the display unit 5 displays a telop composed of the words “the function of the connected device cannot be operated”.

  In addition, if the external device 207 can perform data communication if there is an instruction to obtain the latest table 9 from the input unit 3 after step ST28 is executed, the server or the The latest version of the table 9 is confirmed by accessing the host or the like, and if the version of the held table 9 is updated, the latest version of the table 9 is acquired from the server or the host and held. The table 9 can be configured to be rewritten to the latest.

  In this case, for example, as shown in FIG. 16 (e), the display means 5 can be configured to additionally send a word “try to obtain the latest information”. At this time, the communication means 7 can be configured to notify the communication means 7 of a request for obtaining the latest table 9 as shown in step ST37 of FIG. It is also possible to configure so that a request for obtaining the latest table 9 is notified after a user operation of pressing the button.

  Next, display processing performed by the display unit 5 in response to a user operation will be described with reference to a flowchart shown in FIG.

  In the initial state, a top menu screen as shown in FIG. 8 is displayed. A key operation for instructing list display is performed on the top menu screen and screens sequentially displayed thereafter (step ST31). Next, according to the key operation performed in step ST31, the corresponding item is read from the table 9 having a hierarchical structure and displayed in a tree structure list format (step ST32). In this way, by displaying the items to be displayed in a tree-structured list format, the space on the display screen can be used effectively. Next, it is checked whether or not the key operation for instructing the list display is completed (step ST33). If it is determined in step ST33 that the key operation for instructing list display has not ended, the process returns to step ST31 and the above-described process is repeated.

  By repeating the above steps ST31 to ST33, the following list display is performed. That is, when a key operation for selecting “connected device list” is performed on the menu screen as shown in FIG. 8, a connected device list screen as shown in FIG. 9 is displayed. This connected device list screen is created based on the data stored in the “device” item of the table 9. On the connected device list screen, the user can select one button from the mobile phone, the memory card, the music file, the image / moving image file, or the media as the external device 207 by key operation. Hereinafter, a case where “mobile phone” is selected as the external device 207 will be described as an example.

  When a key operation for selecting “mobile phone” is performed on the connected device list screen shown in FIG. 9, a carrier provider list screen showing carrier providers of mobile phones as shown in FIG. 10 is displayed. This carrier provider list screen is created based on the data stored in the “major category” item of table 9. On this carrier provider list screen, the user can select one button from A1, A2 and A3 by key operation as a carrier provider of the mobile phone.

  When a key operation for selecting one carrier provider, for example, A1, is performed on the carrier provider list screen shown in FIG. 10, the mobile phone corresponding to the carrier provided by the selected carrier provider as shown in FIG. A manufacturer list screen representing the phone manufacturer is displayed. This manufacturer list screen is created based on the data stored in the “medium category” item of the table 9. On this manufacturer list screen, the user can select one button from B1 to B5 by key operation as the manufacturer of the mobile phone.

  When a key operation for selecting one manufacturer, for example, B1 is performed on the manufacturer list screen shown in FIG. 11, a model name list screen showing the model names of mobile phones provided by the selected manufacturer as shown in FIG. Is displayed. This model name list screen is created based on the data stored in the item “Small Classification” in Table 9. On this model name list screen, the user can select one button from C1 to C5 by key operation as the model name of the mobile phone.

  Next, it is checked whether or not the key operation is a model name input (step ST34). That is, in the model name list screen as shown in FIG. 12, it is checked whether or not a key operation for selecting one button from the model names C1 to C5 of the mobile phone has been performed.

  If it is determined in step ST34 that the key operation is a model name input, the function support status of the input model is displayed (step ST35). As shown in FIG. 14, the function support status can be configured such that the button display form is changed to notify the user that the input is completed, and the button of the unsupported function is invalidated. The screen shown in FIG. 14 is created based on the data stored in the item “Restrictions” in Table 9. In the example of the screen shown in FIG. 14, “hands-free”, “data communication” and “phonebook transfer” functions are supported, but “interrupt call” and “call waiting” functions are not supported. , Indicating that it has been disabled. In step ST35, the input model name is notified to the communication processing change means 8 via the communication means 7. When receiving the notification of the model name via the communication unit 7, the communication process changing unit 8 executes the communication change process shown in the flowchart of FIG.

  In addition, when one model is selected on the model name list screen shown in FIG. 12, a function support status screen as shown in FIG. 13 may be displayed. The example shown in FIG. 13 is a screen that is displayed when C1 is selected on the model name list screen, and supports “hands-free”, “data communication”, and “phonebook transfer” functions. This indicates that the functions of “call waiting” and “call waiting” are not supported. Also, the function support status screen shown in FIG. 13 may be configured to be displayed when, for example, an unsupported function is used, for example, when a call waiting signal is received.

  If it is determined in step ST34 that the key operation is not a model name input, then it is checked whether the key operation is acquisition of the latest table (step ST36). If it is determined in step ST36 that the key operation is acquisition of the latest table, the display form of the corresponding button is changed to notify the user that the input is completed and the communication means 7 requests the acquisition of the latest table. Is notified (step ST37). When the communication unit 7 receives the notification of the request for obtaining the latest table, the communication unit 7 obtains and updates the latest table 9 from the server, the host, or the like. If it is determined in step ST36 that the key operation is not the latest table acquisition, another process, that is, a process corresponding to the key operation is executed (step ST38). Thereafter, the display process ends.

  The list display or telop display wording performed on the display means 5 is separately held in a table or the like, and when the wording is displayed by the display means 5, the voice output means 6 changes the wording held. It can be configured to output the voice as it is, or to output the optimized text related to the held text.

  In the navigation device according to Embodiment 1 described above, the case where a mobile phone is used as the external device 207 connected to the outside has been described. However, in addition to the mobile phone, a memory card, a portable AV device, or a medium is used. (Storage medium), and music files, image files, moving image files and the like stored in these can be used.

  In this case, when a key operation for selecting “memory card” is performed on the connected device list screen shown in FIG. 9, a memory list screen showing the type of memory card as shown in FIG. When the key operation for selecting “music file” is performed, a compression format list screen showing the compression type of music data as shown in FIG. 15B is displayed, and the key for selecting “image / movie file”. When the operation is performed, a compression format list screen showing the compression type of the image or moving image file as shown in FIG. 15C is displayed, and when a key operation for selecting “media” is performed, FIG. A media list screen showing the type of media as shown in d) is displayed. In the screens shown in FIGS. 15A to 15D, the function support status is displayed as “O”, “Δ”, and “X” for each item, so that the user can use the function of the external device. You can easily know the support status.

  As described above, according to the navigation device according to Embodiment 1 of the present invention, the function support status of each model of the external device can be displayed, so that the user can support the function of the external device 207 to be used. You can check the situation. If the model is identified and an attempt is made to change to the most suitable communication process and the change is impossible, the user can be informed that the model cannot be used.

  1 Map information acquisition means, 2 position and orientation detection means, 3 input means, 4 route search means, 5 display means, 6 voice output means, 7 communication means, 8 communication processing change means, 9 table, 201 media, 202 drive, 203 GPS receiver, 204 gyro, 205 vehicle speed signal acquisition unit, 206 operation unit, 207 external device, 208 interface circuit, 209 navigation ECU, 210 memory, 211 display, 212 speaker.

Claims (5)

An input means for inputting a destination;
Map information acquisition means for acquiring map data;
Position and orientation detection means for detecting the position of the vehicle;
A route search means for calculating a route from the position detected by the position and orientation detection means to the destination input by the input means based on the map data acquired by the map information acquisition means;
A communication means for communicating with an external device;
Display means for displaying a list of function support statuses indicating the support status of a plurality of functions for each model of the external device
And a navigation device. A communication processing change means having a table for storing the function support status of a plurality of models of external devices,
The navigation device according to claim 1, wherein the display means displays a function support status of a model of the connected external device based on the stored contents of the table. 3. The navigation apparatus according to claim 1, wherein the communication unit acquires a list of function support statuses of a version newer than the version held via the external device. The navigation system of claim 1 or claim 2, wherein further comprising an audio output means for outputting voice information associated with the information or the information displayed by the display means. External device, the music file, image file or a cellular phone storing a moving image file, a memory card, a portable AV equipment or the preceding claims, characterized in that it comprises a storage medium of any one of claims 3 Navigation device.

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