JP2012215476A - Navigation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a navigation device, which performs guidance of a recommended route by activating an application having a navigation function, to reduce power consumption while traveling a section in which it is not necessary to perform guidance on the recommended route.SOLUTION: A navigation device acquires location information of a section having an interval of a predetermined or more distance between junctions on a recommended route, as guidance unnecessary section information in advance. The device starts to perform route guidance processing and measures a current location (S41). When the current location reaches the route guidance unnecessary section (S44:Yes), the device executes termination processing of a navigation application (S45). When the current location reaches the vicinity of an end point of the route guidance unnecessary section, the device restarts the navigation application.

Description

  The present invention relates to a navigation device realized by operating an application program having a navigation function on a mobile terminal device.

  In recent years, in a mobile terminal device such as a mobile phone having a position information acquisition function by GPS (Global Positioning System), a navigation device is operated by operating an application program having a navigation function (hereinafter, “application program” is referred to as “application”). The system used as is realized.

  Since the portable terminal device uses a built-in battery as a power source, it is difficult to continuously use the display device (liquid crystal screen or backlight) for a long time. On the other hand, movement by a vehicle may take a long time. In this case, there is a possibility that the power of the mobile terminal device may be lost during navigation. To prevent this, it is necessary to prepare a large-capacity battery pack or a cord that receives power supply from the vehicle battery, which takes time and cost. For this reason, it is required to reduce the power consumption of the mobile terminal device during navigation execution.

  As a technology that meets this requirement, a screen saver mode that turns off the display and turns off the backlight when no operation is performed for a predetermined time during the execution of navigation using the mobile terminal device is adopted. There is a navigation method that switches from image display such as a map to voice guidance and performs navigation by voice (Patent Document 1).

  However, in the navigation method described in Patent Document 1, when the screen saver mode is set, even when voice guidance is not being performed, the application operates in the background, and accordingly, corresponding power is consumed. For this reason, for example, when there are few roads that branch off like an expressway and the road where the frequency of voice guidance is low, useless power is consumed by starting up the application.

JP 2007-78565 A

  The present invention has been made in order to solve such problems of the prior art, and an object of the present invention is to provide a route on a recommended route in a navigation device that guides a recommended route by operating an application having a navigation function. It is to reduce power consumption when moving in a section where guidance is unnecessary.

  A navigation apparatus according to the present invention is a navigation apparatus that guides a recommended route by operating an application having a navigation function, and includes position information acquisition means for acquiring current position information, and a recommended route from a departure place to a destination. A route searching means for searching for information, a guidance unnecessary section acquiring means for acquiring a guidance unnecessary section where a guidance point as a point for guiding information related to the route does not exist continuously for a predetermined distance or more in the recommended route, and a route guidance A navigation device having route guidance means and application ending means for ending the application when the current position reaches a start point of the guidance unnecessary section.

  ADVANTAGE OF THE INVENTION According to this invention, in the navigation apparatus which guides a recommended route by operating the application which has a navigation function, it is possible to reduce power consumption when moving in a section where route guidance is unnecessary on the recommended route. it can.

It is a figure which shows the system configuration | structure of the navigation apparatus of embodiment of this invention. It is a flowchart which shows the basic operation | movement of the control part of the portable terminal device in the navigation apparatus of embodiment of this invention. It is a flowchart which shows schematic operation | movement of the navigation apparatus of embodiment of this invention. It is a flowchart which shows the guidance unnecessary area information acquisition process in FIG. It is a flowchart which shows the application resumption process in the navigation apparatus of embodiment of this invention. It is a flowchart which shows the route guidance process in FIG.3 and FIG.5. It is a flowchart which shows the navigation application completion | finish process in FIG. It is a flowchart which shows the self-position alerting | reporting process in FIG. It is a flowchart which shows the process of the navigation application restart command in the navigation apparatus of embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
<System configuration of navigation device>
FIG. 1 shows a system configuration of a navigation apparatus according to an embodiment of the present invention. The navigation device of the present embodiment includes a navigation server 10 and a portable terminal device 20 that can communicate via a network 1 such as the Internet. The mobile terminal device 20 is connected to the network 1 via the base station 2.

<Configuration of mobile terminal device>
The mobile terminal device 20 includes a control unit 21, a GPS receiver 22, an operation unit 23, a display unit 24, an audio output unit 25, a communication unit 26, and a storage unit 27 that are connected to the control unit 21.

  The control unit 21 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory) (not shown), and the CPU stores the programs stored in the ROM and the storage unit 27. As functions realized by executing as a work area, timer means 28, self-position notification processing means 29, and navigation application executing means 30 are provided. More specifically, the navigation application execution unit 30 includes a route search request unit 31 and a route guidance unit 32.

  The GPS receiver 22 receives and calculates radio waves transmitted from a plurality of GPS satellites, thereby measuring a reception point, that is, a current position (latitude and longitude) of the mobile terminal device 20 and generating current position information. To do.

  The operation unit 23 is a means for inputting various commands when the user uses the mobile terminal device 20, and includes a touch panel on the screen of the display unit 24, buttons on a device housing (not shown), or a combination thereof. Become.

  The display unit 24 includes a thin display device such as a liquid crystal display or an organic EL (Electroluminescence) display, and displays a map, a recommended route, and the like transmitted from the navigation server 10. The voice output unit 25 includes a speaker, and outputs a voice message at a predetermined guidance point (road branch point) on the recommended route. In practice, depending on the content of the voice message, there are a message that is output before the branch point and a message that is output when the branch point is passed.

  The communication unit 26 is means for communicating with the navigation server 10 via the base station 2 and the network 1. The storage unit 27 includes a nonvolatile memory such as a flash memory, and can store map data downloaded from the navigation server 10, route guidance history information, various fixed information registered by the user, and the like.

  The timer means 28 counts the set time and outputs a time-up signal when the set time is reached. The self location notification processing means 29 automatically measures the position of the mobile terminal device 20 in the background periodically (for example, every 3 minutes) by the GPS receiver 22 and transmits it to the navigation server 10 via the communication unit 26. To do. The interval at which the position of the mobile terminal device 20 is transmitted to the navigation server 10 is set to be longer than the interval at which the current position is acquired at the time of route guidance.

  The navigation application execution means 30 is a means for executing an application having a navigation function (hereinafter referred to as a navigation application). The route search request unit 31 generates a route search request signal for transmission to the navigation server 10. This route search request signal includes position information including departure point information and destination information, and a device ID of the mobile terminal device 20. The departure point information and the destination information are input from the operation unit 23 by the user. However, the current position information generated by the GPS receiver 22 can be used as departure place information. The device ID is stored in the ROM in the control unit 21. The device ID may be any information that can be identified by the user.

  The route guidance means 32 performs route guidance using the map data and recommended route data provided from the navigation server 10 in response to the route search request signal. More specifically, based on the map data and the recommended route data transmitted from the navigation server 10 and the current position information generated by the GPS receiver 22, display image data in which the recommended route and the current position are superimposed on the map image is displayed. It is generated and sent to the display unit 24, and a voice message is sent to the voice output unit 25 at a predetermined guidance point on the recommended route.

<Configuration of navigation server>
The navigation server 10 includes a control unit 11, a communication unit 12 connected to the control unit 11, and a map DB (database) 13. The communication unit 12 is means for communicating with the mobile terminal device 20 via the network 1. The control unit 11 includes a CPU, a ROM, and a RAM (not shown). As a function realized by the CPU executing a program stored in the ROM using the RAM as a work area, the route search means 14, guidance An unnecessary section acquisition unit 15 and a transmission data generation unit 16 are provided.

  The map DB 13 stores map data for displaying a map on the mobile terminal device 20. Map data includes facility data and road data. Since the number of data such as facilities and roads stored in the map DB 13 is enormous, the facility data and road data are managed in units of meshes obtained by dividing the region by latitude and longitude at predetermined intervals. Each mesh is given a unique identification number called a mesh code.

  The facility data is information regarding a facility (POI: Point of Interest), and specifically includes, for each facility, the number of vertices for displaying the facility as a polygon, vertex coordinates, facility attribute information, and the like. . The coordinates of the vertex are the coordinates of the mesh including the facility. The attribute information of the facility includes the mesh code of the mesh that includes the facility, the type and floor number (or height) of a general house, a gas station, a convenience store, etc., the name of the facility, and if the facility is a building, Store information, and detailed information on baby rooms and toilets. Note that the facility data may not be polygons but may be constituted by position information of one point.

  The road data is information regarding the road, and specifically includes links corresponding to the road, nodes corresponding to the road end points and corresponding to the intersections, and link and node attribute information. The link attribute information includes a mesh code of a mesh including the link, coordinates of end points, coordinates of link constituent points, road types such as toll roads and national roads, and height (elevation) information. The node attribute information includes a mesh code of a mesh including the node, information on an intersection name, and the like.

  Based on the departure point information and destination information included in the route search request signal transmitted from the mobile terminal device 20, the route search unit 14 recommends route information (node information, link) from the departure point to the destination. Information, position information of guide points) is searched from the map DB 13. The guidance point is set for each branch point (intersection node) of the road existing on the recommended route or for each main branch point. In the following description, the guide point is set for each branch point. In addition to this, the guide points may include points where various services such as drop-in points around the route can be received and points where tourist attractions can be seen. Further, as the end point of the guide point, for example, a point other than a branch point such as 3 km before the destination may be set.

  Based on the node information and link information of the recommended route searched by the route search unit 14, the guidance-unnecessary section acquisition unit 15 is a section where there is no branch point more than a certain distance, in other words, a section where there is no guidance point more than a certain distance. Information is acquired as guidance unnecessary section information. Examples of sections that do not require guidance include highway interchanges and toll bypass roads.

  The transmission data generation means 16 sends the recommended route information searched by the route search means 14, the guidance unnecessary section information acquired by the guidance unnecessary section acquisition means 15, and the map information corresponding to the recommended route information to the mobile terminal device 20. Generate transmission data for transmission. Further, the transmission data generation unit 16 assigns a route information ID to the transmission data, and writes it in the RAM in the control unit 11 in association with the device ID of the mobile terminal device 20.

  Here, the transmission data is a part of a predetermined range near the current position of the mobile terminal device 20 among the map information, the recommended route information, and the guidance unnecessary section information, and the route information ID is added thereto. This transmission data is updated to map information, recommended route information, and guidance unnecessary section information in a certain range in the moving direction in response to a transmission request accompanying the movement of the mobile terminal device 20.

  Further, the transmission data generation means 16 is located near the end point of the guidance unnecessary section after the mobile terminal device 20 ends the navigation application because the current position of the mobile terminal device 20 has reached the start point of the guidance unnecessary section. When it arrives, a navigation application restart command for instructing the mobile terminal device 20 to start (start) the navigation application is generated.

<Operation of navigation device>
The operation of the navigation device having the above configuration will be described.
<Basic operation of mobile terminal device>
FIG. 2 is a flowchart showing the basic operation of the control unit 21 of the mobile terminal device 20.

  As shown in the figure, first, it is determined whether or not a navigation application restart command has been received from the navigation server 10 (step S1). As described above, the navigation application restart command is transmitted from the navigation server 10 when the current position of the mobile terminal device 20 reaches the vicinity of the end point of the guidance unnecessary section. From this, it can be determined whether or not the end point of the guidance unnecessary section has been reached.

  As a result of the determination, if it has not been received (step S1: No), it is determined whether or not the navigation application is operating (step S2). If it is operating (step S2: Yes), the navigation application is executed (step S3). The execution process of the navigation application is a process performed when the navigation application is activated (details will be described later with reference to FIG. 3).

  On the other hand, if it is received as a result of the determination (step S1: Yes), the navigation application is activated and the self-position notification function is turned off (step S4). Thereby, the navigation application execution means 30 starts the operation, and the self-position notification processing means 29 finishes the operation. Next, the navigation application execution means 30 performs a navigation application restart process (step S5). The navigation application restart process is a process that is performed when the navigation application is started, after reaching the start point of the guidance unnecessary section, ending the navigation application, reaching the end point of the guidance unnecessary section, and starting the navigation application (Details will be described later with reference to FIG. 5).

  When the navigation application execution process (step S3) or the navigation application restart process (step S5) ends, it is determined whether or not the self-position notification function is on (step S6). Also, when it is determined in step S2 that the navigation application is not operating (step S2: No), it is determined whether or not the self-position notification function is on.

  As will be described later with reference to FIG. 7, the self-position notification function is turned on when the start point of the guidance unnecessary section is reached during the execution of the navigation application and the navigation application is terminated. Since the self-location notification function is turned off when the navigation application is resumed (step S4), it is determined by this step S6 that the self-position notification function is on because the current position is the starting point of the guidance-unnecessary section. This is when it exists in the vicinity of the end point.

  If it is determined that the self-position notification function is on (step S6: Yes), self-position notification processing is executed (step S7). If it is determined that the self-position notification function is not on (step S6: No), the process proceeds to step S1. Return. The flow of the self-position notification process will be described later with reference to FIG.

<< Navi app execution process >>
FIG. 3 is a flowchart showing a schematic operation of the navigation apparatus. In this flowchart, the operation of the mobile terminal device 20 is a navigation application execution process (step S3).

  As shown in the figure, in the mobile terminal device 20, the route search request means 31 operates, and the starting point and the destination for the recommended route search request are input (step S11). That is, the display 24 displays a departure point / destination input screen, and the departure point / destination input by the user from the operation unit 23 is stored in the RAM in the control unit 21 as departure point information / destination information. . When the GPS receiver 22 is generating current position information, it can be used as departure place information.

  Next, the route search request means 31 reads the position information (departure point information and destination information) held in the RAM and the device ID stored in the ROM, generates a route search request signal including them, and generates a communication unit. 26 is transmitted to the navigation server 10 (step S12).

  In the navigation server 10, the route search request signal transmitted from the mobile terminal device 20 is received by the communication unit 12 and sent to the control unit 11, whereby the route search process (step S <b> 21) starts.

  In this route search processing, the route search unit 14 recommends a recommended route from the departure point to the destination based on the departure point information and the destination information included in the route search request signal transmitted from the mobile terminal device 20. Information (node information, link information, position information of guidance points) is searched from the map DB 13.

  When the route search process (step S21) ends, the guidance unnecessary section acquisition unit 15 executes the guidance unnecessary section information acquisition process (step S22). FIG. 4 is a flowchart showing guidance unnecessary section information acquisition processing. As shown in the figure, it is determined whether or not there is a section having no branch point (guide point) more than a certain distance (for example, 10 km) on the recommended route searched by the route searching means 14 (step S31). (Step S31: Yes), the position information of the start point and end point of the section is acquired from the map DB 13 (Step S32). If it does not exist (step S31: No), the flow of this figure is finished without doing anything.

  When the guidance-unnecessary section information acquisition process (step S22) is completed, the transmission data generation unit 16 recommends the recommended route information searched by the route search unit 14, the guidance-unnecessary section information acquired by the guidance-unnecessary section acquisition unit 15, and the recommendation. Among the map information corresponding to the route information, transmission data including information of a predetermined range near the current position of the mobile terminal device 20 and the route information ID is generated and transmitted to the mobile terminal device 20 via the communication unit 12. (Step S23).

  In the mobile terminal device 20, map information, recommended route information, guidance unnecessary section information, and route information ID are received by the communication unit 26 (step S13), sent to the control unit 21, and written into the RAM. Next, the route guidance means 32 performs route guidance processing (step S14). The flow of the route guidance process will be described later with reference to FIG.

《Navi app restart processing》
Next, the navigation application restart process (step S5 in FIG. 2) will be described. FIG. 5 is a flowchart showing the navigation application restart process. As illustrated, the mobile terminal device 20 reads the route information ID from the storage unit 27 (step S15). This route information ID is stored in the storage unit 27 when the start point of the guidance unnecessary section is reached during execution of the navigation application and the navigation application is terminated.

  Next, a route information request signal including the route information ID and the device ID is transmitted to the navigation server 10 (step S16).

  When the navigation server 10 receives the route information request signal, the transmission data generation means 16 manages the recommended route information, guidance unnecessary section information, and the like managed based on the route information ID included in the route information request signal. Map information is read from RAM in the control part 11 (step S24), and is transmitted to the portable terminal device 20 via the communication part 12 with route information ID (step S25).

  In the mobile terminal device 20, when the map information, recommended route information, guidance unnecessary section information, and route information ID are received by the communication unit 26 (step S17) and sent to the control unit 21, the route guidance unit 32 performs route guidance processing ( Step S18) is performed. Steps S17 and S18 are the same as steps S13 and S14 in FIG. 3, respectively.

《Route guidance processing》
Next, route guidance processing (step S14 in FIG. 3 and step S18 in FIG. 5) will be described. FIG. 6 is a flowchart showing route guidance processing. When the route guidance unit 32 starts the route guidance process, the GPS receiver 22 measures the current position (step S41), and displays the map, the recommended route, and the current position on the display unit 24.

  Next, the route guidance means 32 determines whether or not there is notification information, in other words, whether or not the notification information output position before the guidance point has been reached (step S42). If it is determined that there is notification information (step S42: Yes), the notification information is output. That is, a voice message is sent to the voice output unit 25 and corresponding image information is sent to the display unit 24. The notification information is, for example, “I will turn right soon”, “I will go straight to the intersection”. In addition, about the acquisition method of alerting | reporting information, you may transmit from the navigation server 10 with the positional information on a guidance point, or memorize | stores alerting | reporting information ID, audio | voice data, and image data in the memory | storage part 27 in association, navigation. The server 10 may transmit guidance point position information and notification information ID, and use voice data and image data corresponding to the notification information ID.

  If there is broadcast information (step S42: Yes), after the broadcast information is output (step S43), if there is no broadcast information (step S42: No), the process proceeds to step S44 as it is and a guidance unnecessary section is entered. Determine if it has been reached.

  Here, reaching the guidance section means that the current position has passed the start point of the guidance-unnecessary section (a branch point on the front side of the traveling direction among the two branch points constituting the guidance-unnecessary section). To do. If the guidance unnecessary section has been reached (step S44: Yes), the flow (route guidance process) in this figure is terminated after the navigation application end process (step S45). Details of the navigation application end process will be described later with reference to FIG. For example, in the case of an interchange on a highway, since it is notified that the vehicle has passed there, the navigation application termination process may be executed when the interchange is completed.

  If the guidance unnecessary section has not been reached (step S44: No), it is determined whether or not the destination has been reached (step S46). If the destination has been reached (step S46: Yes), the flow ( If the route guidance process has been completed and has not arrived (step S46: No), the process proceeds to step S41.

<< Navi app termination process >>
FIG. 7 is a flowchart showing the navigation application end process (step S45 in FIG. 6). As shown in the figure, the route information ID is written in the storage unit 27 (step S51), the navigation application is erased from the RAM in the control unit 21 (step S52), and the self-position notification function is set to ON (step S53). Then, the flow of FIG. As a result, the navigation application is terminated, and the navigation application execution means 30 stops its operation. On the other hand, the self-position notification processing means 29 starts to operate.

《Self-position notification processing》
FIG. 8 is a flowchart showing the self-position notification process (step S7 in FIG. 2) executed by the self-position notification processing means 29.

  As shown in the figure, the self-position notification processing means 29 acquires the current position information by the GPS receiver 22 (step S62) when the timer means 28 has passed a certain time (for example, 3 minutes) (step S61), and the communication unit 26. Is transmitted to the navigation server 10 (step S63).

《Navi app restart instruction processing》
FIG. 9 is a flowchart showing processing of a navigation application restart instruction in the navigation server 10. The flow in this figure is repeatedly executed every certain time (for example, 3 minutes).

  As shown in the figure, when the current position information transmitted by the self-position notification function of the mobile terminal device 20 is received (step S71: Yes), whether or not the current position has reached the end point of the guidance unnecessary section. Is determined (step S72).

  Here, the vicinity of the end point of the guidance unnecessary section means within a certain distance (for example, 100 m) from the end point. If it is determined that the current position has reached the vicinity of the end point of the guidance-unnecessary section (step S72: Yes), the transmission data generating unit 16 generates a navigation application restart command, and the mobile terminal device via the communication unit 12 20 (step S73).

  When the current position information has not been received (step S71: No), and when the current position has not reached the vicinity of the end point of the guidance unnecessary section (step S72: No), the flow of this figure ends.

  The mobile terminal device 20 that has received the navigation application restart command performs the navigation application restart process according to the flow of steps S1 → S4 → S5 of FIG. Therefore, when the guidance unnecessary section ends, the navigation application operates and route guidance is performed until the next guidance unnecessary section is reached.

  As described above, according to the embodiment of the present invention, the mobile terminal device 20 does not execute the navigation application in the background by stopping the navigation application in the section where the route guidance is unnecessary, and accordingly, the power consumption is reduced accordingly. Can be reduced.

In the above embodiment, the present invention is applied to a system including a mobile terminal device and a server. However, the present invention can also be applied to a stand-alone navigation device having a map DB and a route DB. .
In the embodiment, a section where there is no guide point more than a certain distance is set as a guidance-unnecessary section. However, a section where there is no course change even when the road is a branch point may be set as a guidance-unnecessary section. Moreover, you may enable it for a user to set between arbitrary points as a route guidance unnecessary area. Further, when the user sets a guidance-unnecessary section, the section may be set to exclude the departure point and the vicinity of the destination (for example, 1 km). You may enable it to cancel the section set as a guidance unnecessary section.

In the embodiment, the mobile terminal device 20 terminates the navigation application in the guidance unnecessary section. However, when an unexpected situation such as a traffic jam or an accident occurs while driving in the guidance unnecessary section, an exception is made. Alternatively, the navigation application may be activated to notify the user.
The navigation server 10 collects traffic jam information and accident information. The navigation server 10 may collect information on a point where a traffic jam or an accident has occurred from an external device.
The transmission data generation means 16 of the navigation server 10 indicates that the position information sent from the self-position notification processing means 29 of the mobile terminal device 20 is near a traffic jam road or an accident occurrence point (within a certain distance from the corresponding point). In this case, the navigation application restart command is generated together with the traffic jam information and the accident information, and transmitted to the corresponding mobile terminal device 20 via the communication unit 12. When the mobile terminal device 20 receives the navigation application restart instruction, the traffic jam information, and the accident information from the navigation server 10, the mobile terminal device 20 restarts the navigation app and informs the user of the traffic jam information and the accident information with a voice message or the like.

  In the embodiment, the navigation server 10 determines whether or not the mobile terminal device 20 has reached the vicinity of the end point of the guidance unnecessary section, but is sent from the self-position notification processing unit 29 of the mobile terminal device 20. Comparing the position information with the managed recommended route information, even when the position information of the mobile terminal device 20 deviates from the recommended route by a predetermined distance or more, the mobile terminal device 20 deviates from the navigation application restart command. Information to that effect may be transmitted. When the mobile terminal device 20 receives the navigation application restart instruction and the information indicating the departure from the navigation server 10, the mobile terminal device 20 restarts the navigation application, notifies the user of the departure by a voice message or the like, and re-searches the route. You may alert | report to a user whether it performs.

  In the embodiment, the navigation server 10 generates and transmits a navigation application restart instruction when the mobile terminal device 20 reaches the vicinity of the end point of the guidance-unnecessary section. A navigation application restart instruction may be transmitted when the end point of the unnecessary section is reached. In addition, the mobile terminal device 20 may restart the navigation application at the timing when the navigation application restart command from the navigation server 10 is received, or after receiving the navigation application restart command, the current position of the mobile terminal device 20 is not required to be guided. The navigation application may be resumed when the end point of the section is reached.

  In the embodiment, the generation interval of the current position information by the GPS receiver is set to a predetermined interval. However, when a traffic jam occurs, the mobile terminal device 20 uses the generation interval of the current position information by the GPS receiver 22 as a route. By making it longer (for example, 1 minute) than the time during guidance (for example, 1 second), it is possible to reduce power consumption even while the navigation application is being executed.

DESCRIPTION OF SYMBOLS 1 ... Network, 10 ... Navigation server, 11 ... Control part, 12 ... Communication part, 13 ... Map DB, 14 ... Route search means, 15 ... Guide unnecessary area acquisition means, 16 ... Transmission data generation means, 20 ... Portable terminal device , 21 ... control part, 22 ... GPS receiver, 23 ... operation part, 24 ... display part, 25 ... voice output part, 26 ... communication part, 27 ... storage part, 28 ... timer means, 29 ... self-position notification processing means , 30... Navigation application executing means, 31... Route search request means, 32.

Claims (5)

A navigation device for guiding a recommended route by operating an application having a navigation function,
Position information acquisition means for acquiring current position information;
A route search means for searching for a recommended route from the starting point to the destination,
In the recommended route, guidance unnecessary section acquisition means for acquiring a guidance unnecessary section where a guidance point that is a point for guiding information related to the route does not exist continuously for a predetermined distance or more;
Route guidance means for guiding the route;
Application ending means for ending the application when the current position reaches the start point of the guidance unnecessary section. The navigation device according to claim 1, wherein
When the application has been terminated, current position information is acquired at regular intervals, and when the current position reaches a position at a predetermined distance to the end point of the guidance-unnecessary section, an application activation that restarts the application A navigation device further comprising means. The navigation device according to claim 2, wherein
Further comprising information holding means for holding the position information of the recommended route and the guidance point and guidance unnecessary section information when the operation of the application is finished by the application ending means;
The route guidance means, when the application is restarted, performs route guidance using the recommended route and the position information of the guidance point and guidance unnecessary section information held in the information holding means. The navigation device according to any one of claims 1 to 3,
The navigation device includes a mobile terminal device and a navigation server that can communicate via a network. The navigation device according to claim 4, wherein
The portable terminal device includes route search request means for making a route search request to the navigation server, the route guidance means, and the application end means, and the navigation server includes the route search means, and the guidance The navigation apparatus which has an unnecessary area acquisition means and the information transmission means which transmits the said recommended route and guidance unnecessary area information to the said portable terminal device.

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