JP6037817B2 - Portable navigation device and navigation method - Google Patents

Description

  The present invention relates to a portable navigation device realized by a portable information terminal such as a high-function mobile phone terminal, and a navigation method used in the portable navigation device.

  Conventionally, a portable navigation device called a PND (Portable Navigation Device) has been used. The PND can be mounted on a car and used as a car navigation apparatus or as a pedestrian navigation apparatus when moving on foot. In addition, high-function mobile phone terminals called smartphones that have become widespread in recent years can function as navigation devices by executing navigation applications (software). A high-function mobile phone terminal can be brought into a car and used as a car navigation device, or can be used as a pedestrian navigation device during walking.

  In this way, in the case of a portable device that can be used as a car navigation device or a pedestrian navigation device, if the moving means changes during the process, the changed moving means is in accordance with an instruction from the user. It is necessary to perform route search again according to the situation. For example, if you first headed to your destination by car, but you parked your car in a parking lot due to traffic congestion and headed to your destination on foot from the middle, the portable device will have changed transportation means. Accordingly, the route search needs to be performed again to newly perform route guidance processing.

  In addition, there are techniques shown below that enable route guidance (route guidance) to be performed appropriately even if the moving means changes in the middle. For example, the route search device disclosed in Patent Document 1 described later uses, as a transfer node, a place where the moving means may change from a car to a foot or from a foot to a car between a departure point and a destination. Set it and keep it in memory. And when the said route search apparatus arrives at the said transfer node, it judges that the moving means used until then changed to the predetermined other moving means, and switches to the route guidance according to the changed moving means. Like to do.

  Further, the navigation device disclosed in Patent Document 2 described later can distinguish between the in-vehicle mode and the out-of-vehicle mode in accordance with attachment / detachment to / from the automobile. The vehicle functions as a car navigation device when in the vehicle mode, and functions as a pedestrian navigation device when in the vehicle mode. In addition, the information providing system disclosed in Patent Document 3 described later changes the moving means by a user operation, and performs route guidance according to the changed moving means.

JP 2003-148985 A JP 2001-317947 A JP 2010-204115 A

  By the way, in the case of the route search device disclosed in Patent Document 1 described above, the electronic map data in which the transfer node is set must be used, and the moving means other than the preset transfer node can be changed. Can not respond. For example, after a route is given to a driver of a car driven by a person other than the user on the user's portable device (portable terminal), only the user changes the car to a place other than the transfer node. If you get off and start moving on foot, you can't.

  In the case of the navigation device described in Patent Document 2 described above, the vehicle interior mode and the vehicle exterior mode are switched by detecting attachment / detachment to / from the automobile. For this reason, in the case of a navigation device that does not need to be mounted on a vehicle and can be used by a user other than the driver, the vehicle mode and the vehicle outside mode cannot be switched. Further, in the case of the information providing system of Patent Document 3 described above, an operation input by the user is necessarily required, and therefore the operation input may be troublesome for the user.

  In view of the above, it is an object of the present invention to appropriately determine a change of a moving means by a user and automatically perform route guidance according to the changed moving means in a portable navigation device. To do.

In order to solve the above-described problem, a portable navigation device according to claim 1 is provided.
Current position acquisition means;
Current time acquisition means;
Communication means;
Route guidance processing means for performing route guidance through at least display means using the current position acquired by the current position acquisition means and the route search result according to the moving means;
Discriminating means for discriminating the current moving means of the user in consideration of the latest moving speed of the own aircraft and the traffic information related to the moving speed of the current position ;
A switching control means for switching to the route guidance according to the new moving means according to the judgment result when the judgment result of the discrimination means is different from the current route guidance target moving means ,
The latest movement speed is calculated based on the past current position acquired by the current position acquisition unit and the past current time acquired by the current time acquisition unit. Calculated from
The traffic information is obtained from a predetermined information provider through the communication means .

According to the portable navigation device of the first aspect of the present invention, the route guidance processing unit displays at least the current position acquired by the current position acquiring unit and the route search result corresponding to the moving unit. Route guidance can be performed through the means. Then, the determining means determines the current moving means of the user in consideration of the latest moving speed of the own device and the traffic information related to the moving speed of the current position . When the determination result by the determination unit is different from the current route guidance target moving unit, the switching control unit functions and performs switching control so as to perform route guidance according to the new moving unit. In this case, the latest moving speed is calculated based on the past current position acquired by the current position acquisition unit and the past current time acquired by the current time acquisition unit. The traffic information is obtained from a predetermined information provider through communication means.

  As a result, the vehicle was initially directed to the destination, but the user did not perform any special operation input even when the vehicle was parked in the vicinity of the destination, for example, when the vehicle was aimed at the destination on foot. It is possible to automatically switch to route guidance when the moving means is walking. That is, regardless of the location of the moving means, an appropriate route search according to the moving means is performed, and the route guidance using the map display can be performed seamlessly (seamlessly) based on the result. .

  According to the present invention, in the portable navigation device, the change of the moving means by the user is appropriately determined, the route search according to the changed moving means is performed, and the route guidance using the map display is automatically performed. be able to.

It is a figure for demonstrating the user terminal device 1 with which one Embodiment of the navigation apparatus of this invention was applied. 4 is a flowchart for explaining route guidance processing executed in a user terminal device 1; It is a flowchart following FIG. 4 is a diagram for explaining an example of a display screen displayed on a display unit 110 in route guidance processing performed by a user terminal device 1. FIG. 4 is a diagram for explaining an example of a display screen displayed on a display unit 110 in route guidance processing performed by a user terminal device 1. FIG. It is the figure which put together about the information which can be used for discrimination | determination of a moving means, and the discriminating method of the moving means using the information.

  Hereinafter, an embodiment of a navigation method used in the portable navigation device and the portable navigation device of the present invention will be described. The portable navigation device of the present invention can be realized as, for example, a so-called stand-alone device such as a PND that is a portable navigation device that can be carried or a tablet-type terminal device.

  It can also be realized as a server device that provides route information and a PND, a tablet-type terminal device, or a high-function mobile phone terminal called a smartphone that is connected through a network to cooperate. In the following, in order to simplify the explanation, an example in which a navigation function is realized by connecting a server device that provides route information and a user terminal device that is a high-function mobile phone terminal through a network will be described. An embodiment of the invention will be described.

[Configuration example of navigation system and navigation device]
FIG. 1 is a diagram for explaining the navigation system of this embodiment. As shown in FIG. 1, the navigation system of this embodiment is configured by connecting a user terminal device 1 and a route information providing server device 3 through a network 2. In this embodiment, the user terminal device 1 is a high-function mobile phone terminal called a smart phone or the like, to which an embodiment of the portable navigation device and navigation method of the present invention is applied.

  The network 2 is mainly the Internet, but includes, for example, a mobile phone network and various local area networks (LANs) connecting the user terminal device 1 to the Internet. The route information providing server device 3 holds map information, road network data, and pedestrian network data, performs route search processing in response to a route search request from the user terminal device 1, and sends the search result to the user terminal device 1. Realize the functions provided.

  In this embodiment, as will be described later, the user terminal device 1 has a GPS function for measuring the current position of its own device. The connected mobile terminal location information server 4 can also be used. The mobile terminal location information server 4 is provided on the telephone company side, and manages the number of each base station, the latitude / longitude of the installation location of each base station, and the like. Then, the mobile terminal location information server 4 triangulates the location of the mobile phone terminal from the terminal identification information of the mobile phone terminal sent from the base station and the information on the received electric field strength of the radio wave from the mobile phone terminal. It has a function to calculate and manage using.

  The mobile terminal location information server 4 also has a function of sending the calculated location information of the mobile phone terminal to the mobile phone terminal. Thereby, even when the user terminal device 1 cannot measure the current position by the GPS function, the user terminal device 1 grasps the current position of the own device based on the information from the mobile terminal position information server 4, and obtains the current position of the own device. It can be used as a position. In the navigation system configured as described above, the user terminal device 1 can perform route guidance processing (navigation processing) based on the current position of its own device and the search result from the route information providing server device 3.

  As will be described in detail later, the road network data held by the route information providing server device 3 is for searching for a route when the moving means is an automobile, and the pedestrian network data is This is for searching for a route when. That is, the route information providing server device 3 can search for a route according to the moving means and provide it to the requesting user terminal device 1.

  For this reason, the user terminal device 1 of this embodiment can detect the situation of the own device while receiving the route information from the route information providing server device 3 and executing the route guidance processing (navigation processing). Accordingly, the moving means of the user carrying his / her own device is determined. If the determined moving means of the user of the user's own machine is different from the moving means that is the target of route guidance, the route according to the newly determined moving means is not inconvenienced by the user. It has a function of automatically switching to perform guidance.

  Below, each structure and operation | movement of the user terminal device 1 of this embodiment and the path | route information provision server apparatus 3 are demonstrated concretely. Although only one user terminal device 1 is shown in FIG. 1, each of a large number of user terminal devices 1 possessed by a large number of users is connected to the route information providing server device 3 via the network 2. Operate in cooperation.

[Configuration example of user terminal device 1]
First, a configuration example of the user terminal device 1 will be described. The basic configuration of the user terminal device 1 is shown in the block diagram on the lower end side of FIG. In the user terminal device 1 shown in FIG. 1, the wireless communication unit 101 converts a signal received through the network 2 into data that can be processed by the own device, or signals various data for transmission in accordance with the protocol. Or sent to the network 2. The wireless communication unit 101 is connected to a transmission / reception antenna 101A.

  The control unit 102 controls each unit of the user terminal device 1 and is configured by connecting a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random access Memory) through a CPU bus (not shown). Computer device. The control unit 102 also functions as an application execution unit that executes various applications.

  The storage device 103 includes a nonvolatile memory as a recording medium, and performs writing / recording holding / reading / deleting various application programs and data obtained by various processes to the nonvolatile memory. The operation unit 104 includes hardware keys provided in the user terminal device 1, receives an operation input from the user, and supplies the received information to the control unit 102. Note that the hardware keys provided in the operation unit 104 are, for example, a power on / off key and some function keys for executing basic functions.

The time control unit 105 manages the current date, current day, and current time. The sensor unit 106 includes a gyro sensor, an acceleration sensor, a direction sensor (geomagnetic sensor), and the like. Gyroscopes, the angular speed and direction of rotation of the user terminal device 1, also the acceleration sensor detects an acceleration applied to the user terminal device 1. Further, the direction sensor detects which direction the user terminal device 1 is facing by detecting geomagnetism. That is, in addition to the orientation sensor, the sensor unit 106 is mounted with a three-axis (front / rear, left / right, upper / lower) acceleration sensor or a six-axis sensor that combines an acceleration sensor and an angular velocity sensor. These sensors identify the orientation and orientation of the user terminal device 1 so that a so-called navigation function or the like can be appropriately provided. In addition, the user terminal device 1 according to this embodiment grasps the vibration state of the user terminal device 1 from the detection output from the gyro sensor or the acceleration sensor, and can determine whether the vehicle is moving or walking. ing.

  The charging circuit 107 realizes a function of converting electric power from the outside and supplying it to a battery (charging ground) 108 to charge the battery 108. The control unit 102 manages the charging state of the battery 108 through the charging circuit 107, and can control the charging circuit 107 so as not to overcharge. The battery 108 is charged by the charging circuit 107 and supplies driving power to each part of the user terminal device 1. The GPS unit 109 and the GPS antenna 109A realize a function of measuring the current position of the own device.

  The display unit 110 receives various image data and video data, converts them into video signals, and displays images and videos corresponding to the video signals on its own display screen. The touch panel 111 attached to the display screen of the display unit 110 constitutes a so-called software key together with information displayed on the display screen. Therefore, the control unit 102 can recognize an instruction input from the user based on information indicating the user's designated position from the touch panel 111 and information displayed on the display screen of the display unit 110 corresponding to the designated position. It is like that.

  The audio output unit 112 converts various audio data supplied thereto into an analog audio signal and supplies the analog audio signal to the speaker 113. As a result, sound corresponding to the sound data supplied to the sound output unit 112 is emitted from the speaker 113. The audio output unit 112 and the speaker 113 are used when a TTS (Text To Speech) function is realized. Therefore, voice guidance during route guidance processing (navigation processing) is also performed through the voice output unit 112 and the speaker 113.

  The route guidance processing unit 114 performs route guidance processing (based on the route search result including the map information provided from the route information providing server device 3 in response to a request from the own device and the current position from the GPS unit 109 or the like. Navigation processing) is executed. Specifically, the route guidance processing unit 114 displays a map showing the route and the current position of the own device on the display unit 110, and performs processing for guiding the route to the user.

  In this case, the route guidance processing unit 114 reads out audio data instructing a corner or the like from the storage device 103 and supplies it to the audio output unit 112 as necessary, and releases the audio corresponding to this from the speaker 113. Users can be guided by sound and voice messages. When the current position cannot be measured by the GPS unit 109 for some reason, the current position of the own device can be specified using the current position from the mobile terminal position information server 4.

  The moving means discriminating unit 115 realizes a function of discriminating a moving means of a user who owns (carries) his / her own device according to the situation of the own device (user terminal device 1) when the route guidance processing is performed. To do. The situation of the user terminal device 1 can be grasped by the following information. For example, the moving speed of the user terminal device 1, traffic information (congestion information), the road attribute of the road where the user terminal device 1 is located, the distance from the current position of the user terminal device 1 to the destination, and the user terminal device 1 are displayed. The scale of a map can be used.

  Here, an example of a method (method) for determining the moving means of the user according to the situation of the user terminal device 1 will be described. In the following, in order to go out by car, the route search is performed with the moving means as “automobile” and the navigation function for the automobile is used, but the case where the moving means becomes a walk after that will be described as an example. .

  The travel speed of the user terminal device 1 can be grasped based on the past current position acquired through the GPS unit 109 and the time when the past current position acquired through the time control unit 105 is acquired. It can be calculated from the above moving distance and moving time. And the latest moving speed of the user terminal device 1 can be grasped | ascertained by the moving distance and moving time of the latest predetermined section. And if the moving speed of the user terminal device 1 is 3 km / h to 7 km / h, it can be determined that the moving means of the user is walking. Further, if the moving speed of the own device is 8 km / h or more, it can be determined that the user's moving means is an automobile.

Further, traffic information (mainly traffic jam information) related to the moving speed of the place including the current position of the user terminal device 1 is acquired through the network 2 and taken into consideration. Specifically, the control unit 102 forms a traffic information provision request, transmits this request to a predetermined traffic information providing server device through the wireless communication unit 101 and the transmission / reception antenna 101A, and acquires the traffic information from the server device. As a result, it is possible to prevent erroneous determination that the moving means is walking when the moving speed is 3 km to 7 km per hour because the road on which the vehicle is traveling is congested.

Further, the road attribute related to the specification of the moving means of the road where the user terminal device 1 is located can be specified based on the information included in the map information, the road attribute corresponding to the current position acquired through the GPS unit 109 or the like. In a simple manner, if the current position is on the highway, the user's moving means is an automobile, and if the current position is on the pedestrian road, the user's moving means can be determined to be walking. In consideration of the moving direction, when the one-way road is moving in the reverse direction, it is possible to determine that the moving means is walking.

  Further, the distance from the current position to the destination can be grasped as the distance (positional relationship) on the map from the current position acquired through the GPS unit 109 to the destination set for route search. Thereby, it is possible to grasp the status of how close the user terminal device 1 is to the destination. For example, when the distance between the user terminal device 1 and the destination is greater than a predetermined distance, the user's moving means is an automobile, and the distance between the user terminal device 1 and the destination approaches a predetermined distance or less. In this case, it can be determined that the user's moving means is walking.

  In addition, in the route guidance process, considering the case where the entire route from the current position to the destination is displayed, the scale of the map displayed according to the distance is 1 / 50,000 and 1 / 5,000. For example, 1 / 10,000. In other words, the longer the route from the current position to the destination, the smaller the map (the scale with the larger denominator value) is necessary. Conversely, the shorter the route from the current position to the destination, the larger the scale ( A map with a small denominator value) is sufficient. For this reason, if the scale of the map for displaying the entire route is, for example, 1 / 10,000 or less, it can be seen that the map has changed from a regional map to a city map. It can be determined that the moving means is walking. As described above, the route guidance processing unit 114 of the user terminal device 1 of this embodiment can automatically control the scale of the map to be displayed.

  Here, the moving means of the user of the user terminal device 1 is determined using the moving speed, traffic information (congestion information), road attributes, the distance from the current position to the destination, and the scale of the displayed map. Explained the case. However, the information used for determining the moving means is not limited to one. One or more of travel speed, traffic information (congestion information), road attributes, the distance from the current position to the destination, and the scale of the displayed map can be used. Further, as will be described in detail later, various other information can be used, and there are various combinations of information to be used.

  Then, when the determination result of the movement means determination unit 115 is different from the previous movement means, the switching control unit 116 responds to the newly determined movement means from the route guidance processing corresponding to the previous movement means. To automatically switch to the route guidance process. As a result, the vehicle was initially directed to the destination by car, but even if the user got off the car halfway and went to the destination on foot, the user did not need to perform any operation to make the vehicle a vehicle. It is possible to automatically switch from route guidance to a route plan in which the moving means is walking.

[Configuration Example of Route Information Providing Server Device 3]
Next, a configuration example of the route information providing server device 3 will be described. The basic configuration of the route information providing server device 3 is shown in the block diagram on the upper end side of FIG. In the route information providing server device 3 shown in FIG. 1, the communication I / F 301 converts the signal received through the network 2 into data that can be processed by the own device, or conforms various data for transmission to the protocol. It is converted into a signal and sent to the network 2.

  The control unit 302 controls each unit of the route information providing server device 3 and is a computer device configured by connecting a CPU, a ROM, and a RAM through a CPU bus (not shown). The control unit 302 also functions as an application execution unit that executes various applications. The storage device 303 includes a hard disk as a recording medium, and performs writing / recording holding / reading / deleting various application programs and data obtained by various processes to the hard disk.

  Each of the map DB 304, the road network DB 305, and the pedestrian network DB is formed on a large-capacity recording medium such as a hard disk, and stores and holds predetermined data. Here, the character “DB” is an abbreviation for database.

  The map DB 304 stores and holds various map information (map data) such as vector data, raster data, and annotation data for drawing a map in association with latitude / longitude information. Specifically, the map information accumulated in the map DB 304 is formed for each predetermined type (for each layer) such as a road, a railway, a river, a mountain, a commercial facility, a financial institution, a house, and a sign.

  The road network DB 305 stores and holds road network data including node data and link data. The node data represents points such as landmarks, buildings, facilities, intersections, branch points, and bending points. In addition, the link data indicates a route through which an automobile such as an expressway, a national road, a prefectural road, a municipal road, and a private road can pass through a line segment connecting node data. Each link data is associated with information such as the number of the node constituting the link, the link cost, and the link type.

  The link cost represents a load applied to the user when traveling on the road represented by the link. In this embodiment, the link cost is set according to the length of the road represented by the link. The link cost may be set according to the time required to travel on the road represented by the link. The link cost is referred to when searching for a route with the minimum link cost by the so-called Dijkstra method. The link type corresponds to a road attribute and is information indicating whether the link part is an expressway, a national road, a prefectural road, a municipal road, or a private road. In addition, the link data includes detailed information such as the width of the link.

  The basic data configuration of the pedestrian network DB 306 is the same as that of the road network DB 305 described above. However, link data managed by the pedestrian network DB 306 includes general roads that pedestrians can pass, sidewalks associated with various roads, pedestrian crossings, pedestrian bridges, and pedestrian paths that can pass through buildings and parks. It is about the road where pedestrians can pass.

  The request extraction unit 307 decomposes various requests from the user terminal device 1 and the like received through the communication I / F 301 under the control of the control unit 302, extracts necessary information, and relates the extracted information. Supply to the processing unit. For example, when the request is a route search request from the user terminal device 1 from the information indicating the type of request received, the request extraction unit 307 extracts information such as a departure place, a destination, and a moving means from the request. These are supplied to the route search processing unit 308.

  The route search processing unit 308 performs a route search based on information such as a departure place, a destination, and a moving means from the request extraction unit 307 under the control of the control unit 302. In this case, the route search processing unit 308 performs route search using the road network DB 305 when the moving means is an automobile, and performs route search using the pedestrian network when the moving means is walking. The route search processing unit 308 acquires map information necessary for performing route guidance from the map DB 304 according to route information (route information) from the departure point to the destination obtained by the search, Map information and route information are supplied to the information providing unit 309.

  Under the control of the control unit 302, the information providing unit 309 prepares transmission data including map information and route information from the route search processing unit 308, and transmits this data via the communication I / F 301 as a transmission source of the route search request. Processing to be provided to the user terminal device 1 is performed. Also, the information providing unit 309 acquires map information corresponding to the supply from the user terminal device 1 from the map DB 304 under the control of the control unit 302, and obtains the map information from the map DB 304 through the communication I / F 301. It also provides the processing.

  In this way, the route information providing server device 3 performs a route search in response to the route search request from the user terminal device 1, and uses the result and map information necessary for route guidance as the transmission source of the route search request. Perform the provided process.

[Navigation function by user terminal device 1 and route information providing server device 3]
Then, the user terminal device 1 and the route information providing server device 3 of this embodiment configured as described above cooperate to realize a navigation function. Specifically, in response to a route search request from the user terminal device 1, the route information providing server device 3 performs a route search and returns the result to the requesting user terminal device 1. The user terminal device 1 uses the route search result from the route information providing server device 3 and the current location of the own device acquired through the GPS unit 109 or the like to display a map showing the route and the current location in the user terminal device 1. Is displayed on the display unit 110 to provide route guidance.

  As described above, the route information providing server device 3 performs route search when the moving means is an automobile and route search when the moving means is walking in response to a request from the user terminal device 1. Can do. The user terminal device 1 can function as an automobile navigation device or a pedestrian navigation device according to the route search result from the route information providing server device 3. And the user terminal device 1 discriminate | determines the moving means of the user who carries the own machine for every predetermined timing at the time of route guidance execution. Then, when the moving means (the moving means used for the route search) that is the target of route guidance is different from the newly determined moving means, the user terminal device 1 determines the newly determined moving means. It is possible to automatically switch to the route guidance according to the response.

[Processing of User Terminal Device 1]
Next, the route guidance process performed by the user terminal device 1 will be specifically described. 2 and 3 are flowcharts for explaining route guidance processing executed in the user terminal device 1 of this embodiment. 4 and 5 are diagrams for explaining examples of display screens displayed on the display unit 110 of the user terminal device 1 in the route guidance process.

  In the user terminal device 1 of this embodiment, for example, when an item for executing a route guidance application (navigation application) is selected from a predetermined menu, the control unit 102 performs processing shown in the flowcharts of FIGS. Execute. Then, the control unit 102 first accesses a route search site provided by the route information providing server device 3 using a predetermined URL (Uniform Resource Locator) (step S101). Then, upon receiving necessary information such as a display screen from the route search site, first, an information input screen is displayed on the display unit 110 (step S102).

  FIG. 4A is a diagram for explaining an example of the information input screen displayed on the display unit 110 in step S102. The information input screen includes a departure point input display field N1, a destination input display field N2, a moving means input display field N3, and whether or not to use the expressway displayed when the moving means is a car. An input display field N4 and the like are displayed. In FIG. 4A, only four input display fields N1, N2, N3, and N4 are shown, but various other input display fields are provided. The information input display column is displayed so that information can be input.

  In addition, on the information input screen, as shown in FIG. 4A, a map display area H1 for displaying a map for instructing and inputting a departure place and a destination on the map is displayed or not shown. However, a software keyboard for inputting character information may be displayed. And the control part 102 receives the input of the various condition information required in order to search the path | route from a departure place to the destination through an information input screen (FIG. 4 (A)) (step S103).

  In step S103, the control unit 102 first displays the current position acquired through the GPS unit 109 as a departure place in the input display field N1. Further, the control unit 102 transmits the current position to the route information providing server device 3, and acquires from the route information providing server device 3 map information in a predetermined range centered on the current position. And the control part 102 displays the map according to the acquired map information on the map display area H1. As a result, the current position can be used as the starting point as an initial state, and a position indication operation is performed on the map displayed in the map display area H1 through the touch panel 111, so that Adjustments and changes can be made.

  In addition, when the departure location is a location different from the current location, the departure location and its vicinity such as the address, zip code or so-called landmark name of the location desired to be the departure location are displayed in the entry display column N1. Enter identifiable information. In this case, by positioning the cursor in the input display field N1, a software keyboard is displayed in the map display area H1, and an address or the like can be input through the software keyboard.

  The control unit 102 transmits input information such as an address input in the input display field N1 to the route information providing server device 3, and a predetermined range of map information centered on a place (position) specified by the input information. Is acquired from the route information providing server device 3. And the control part 102 displays the map according to the acquired map information on the map display area H1. Thereby, the place (position) input (instructed) by the user can be used as the departure place. Then, by performing a position instruction operation through the touch panel 111 on the map displayed in the map display area H1, the designated departure place can be adjusted or changed.

  In addition, the input of information to the destination input display column N2 is performed on the input display column N1 and the map display area H1 when the departure point is a position different from the current position described above. The destination is input in the same manner as the input instruction. In addition, input of information to the input display column N3 of the moving means and the input display column N4 indicating whether or not to use the expressway is selected by positioning the cursor with respect to N3 and N4 in these input display columns. For example, a pull-down menu including possible items is displayed. The target item can be selected and input from the pull-down menu.

  As described above, in step S103, the user terminal device 1 and the route information providing server device 3 cooperate to input information to the input display fields N1, N2, N3, N4, etc. and to input instructions to the map display area H1. And accepts various information used for route search. In step S <b> 103, the control unit 102 receives an operation input for the “end” button or the “search” button displayed on the lower end portion of the initial screen through the touch panel 111.

  Then, the control unit 102 determines whether or not the “search” button has been selected (step S104). When it is determined that the “search” button has not been operated, whether or not the “end” button has been operated is determined. It discriminate | determines (step S105). When it is determined in the determination process of step S105 that the “end” button has been operated, a predetermined end process such as returning the display on the display unit 110 to the state before the processes shown in FIGS. (Step S106), the processing shown in FIGS. 2 and 3 is terminated. If it is determined in the determination process in step S105 that the “end” button has not been operated, the process from step S103 is repeated, and the information input acceptance process for the information input screen is continued.

  Assume that the control unit 102 determines that the “search” button is operated in the determination process in step S104 after information is appropriately input through the information input screen (FIG. 4A). In this case, the control unit 102 generates a route search request and transmits it to the route information providing server device 3 (step S107). Here, the route search request is a request addressed to the route information providing server device 3 and is used for route search input through the request source identification information, the request type, and the information input screen shown in FIG. Consists of various information.

  Thereafter, the control unit 102 receives the result of the route search executed in the route information providing server device 3 in response to the transmitted route search request, and stores it in the storage device 03 (step S108). And the control part 102 discriminate | determines whether the search result from the route information provision server apparatus 3 was received (step S109), and when it determines with not having received the search result, the process from step S108 is repeated. . Further, it is assumed that it is determined that the search result is received in the determination process of step S109. In this case, the control unit 102 displays the search result stored in the storage device 103 on the display unit 110 (step S110) and accepts an operation input from the user (step S111).

  FIG. 4B is a diagram for explaining an example of a search result display screen displayed on the display unit 110 in step S110. The search result display screen displays various information display fields such as a departure point display field N11, a destination display field N12, a transit point display field N13, and a scheduled arrival time display field N14. In addition, a map display area H11 for displaying map information indicating a route (route) from the departure place to the destination is displayed on the search result display screen. In the display column N11 for the departure place and the display column N12 for the destination, the departure place and the destination indicated (input) by the user of the user terminal device 1 are displayed. In addition, information obtained as a result of the route search is displayed in each of the transit point display column N13, the estimated arrival time display column N14, and the map display area H11.

  In addition, a “return” button and a “start” button are provided on the lower end side of the search result display screen. The “return” button is operated when the route search is performed again as a result of checking the information displayed on the search result display screen. The “start” button is operated to start route guidance according to the search result.

  Then, the control unit 102 proceeds to the process of FIG. 3, and determines whether or not the “start” button for instructing the start of route guidance is operated in step S111 (step S112). When determining in step S112 that the “start” button has not been operated, the control unit 102 determines whether or not the “return” button has been operated (step S113).

  If it is determined in step S113 that the “return” button has been operated, the control unit 102 repeats the processing from step S102 in FIG. Thereby, it is possible to perform the route search according to the newly input information by starting again from the input of the information necessary for the route search. When determining that the “return” button has not been operated in the determination process in step S113, the control unit 102 repeats the process from step S111 in FIG. 2 and accepts an operation input on the search result display screen.

  Further, it is assumed that it is determined in the determination process in step S112 that the “start” button has been operated. In this case, the control unit 102 controls the route guidance processing unit 114 to start the route guidance process using the search result information from the route information providing server device 3 stored and held in the storage device 103 (step S114). FIG. 5A is a diagram for explaining an example of a display screen during route guidance processing. As shown in FIG. 5A, when the route guidance process is started, the route guidance processing unit 114 displays the current position information (latitude / longitude) from the GPS unit 109 and the search result from the route information providing server device 3. A map including the current position is displayed on display unit 110 using the information.

  Then, the route guidance processing unit 114 uses the current position sequentially acquired from the GPS unit 109 to mark the current position of the own device so that the display position changes according to the current position of the own device that changes every moment. P is displayed on the map. Then, the route guidance processing unit 114 performs guidance such as a traveling direction and a turning angle by displaying the current position on the map and voice guidance emitted from the speaker 113 through the voice output unit 112.

  Thereafter, the control unit 102 controls the moving means determining unit 115 to determine the moving means of the user who uses the own device (step S115). As described above, the moving means discriminating unit 115 determines the speed of its own machine, traffic information (mainly traffic jam information), road attributes, the scale of the displayed map, the distance from the current position to the destination, etc. By using the above information, the moving means of the user is determined. Although details will be described later, it is also possible to determine the moving means of the user using information other than the information shown here.

  Then, the control unit 102 determines whether or not the moving means of the user determined this time has changed from the moving means that is the target of the current route guidance process (whether or not the moving means has changed) ( Step S116). If it is determined in step S116 that the moving means has not changed, it is determined whether or not an event for terminating the route guidance process has occurred, such as arrival at the destination or acceptance of a predetermined end operation (step S116). S117).

  Assume that in the determination process in step S117, it is determined that an event that ends route guidance has occurred. In this case, the control unit 102 executes predetermined end processing such as returning the display on the display unit 110 to the state before the processing shown in FIGS. 2 and 3 is executed (step S118). The process shown in FIG. If it is determined in step S117 that there is no event that ends the route guidance, the control unit 102 repeats the processing from step S115 and continues the route guidance processing.

  If it is determined in step S116 that the moving means has changed, the control unit 102 displays on the display unit 110 a notification for switching the moving means to be route guidance (step S119). FIG. 5B is a diagram for explaining an example of a display screen that is displayed when switching of the route guidance target moving means is notified. In this embodiment, the notification of switching of the route guidance target moving means is displayed on the display screen at the time of route guidance described with reference to FIG. 5A as shown in FIG. 5B. This is done by displaying a switching message or the like here.

  In this embodiment, as described above, the vehicle is directed to the destination, but the case where the vehicle is exited on the way and is directed to the destination on foot is taken as an example. For this reason, in this embodiment, in the switching notification area H21, a message indicating that the moving means has been walked from the automobile and a message that the moving means is switched to walking route guidance are displayed. Yes. Further, as shown in FIG. 5B, a “cancel” button for canceling automatic switching to the route guidance processing according to the newly determined moving means is displayed in the switching notification area H21. Is done.

  Then, the control unit 102 receives an operation input to the “cancel” button through the touch panel 111 (step S120). Thereafter, the control unit 102 determines whether or not the “cancel” button has been operated (step S121). When it is determined in the determination process in step S121 that the “cancel” button has been operated, the control unit 102 deletes the display in the switching notification area H21 displayed as shown in FIG. 5B (step S122). The process from step S115 is repeated. As a result, the display returns to the display screen for route guidance shown in FIG. 5A, and the route guidance processing as it is (the original moving means remains) is continuously performed.

  If it is determined in the determination process in step S121 that the “cancel” button has not been operated, has the control unit 102 notified that switching of the moving means has elapsed (for example, 5 seconds to 10 seconds)? It is determined whether or not (step S123). In the determination process of step S123, when it is determined that a certain time has not elapsed since the notification of the switching of the moving means, the process from step S120 is repeated. In this way, the reason why it is determined whether or not a certain time has passed since the notification of the switching of the moving means is to secure an appropriate time for accepting the operation on the “cancel” button. It can be discriminated by the time information.

  When it is determined in step S123 that the fixed time has elapsed since the notification of the switching of the moving means, the control unit 102 performs the route guidance process (the route corresponding to the moving means before the moving means is determined). The guidance process is terminated (step S124). Thereafter, the control unit 102 forms a route search request according to the new moving means, and transmits this to the route information providing server device 3 (step S125). Specifically, the route search request uses the current position acquired through the GPS 109 as the departure point, the destination as the destination received in step S103, and the moving means as the moving means determined in step S115. It is.

  Thereafter, the control unit 102 receives the result of the route search executed in the route information providing server device 3 in response to the transmitted route search request, and stores it in the storage device 103 (step S126). And the control part 102 discriminate | determines whether the search result from the route information provision server apparatus 3 was received (step S127), and when it determines with not having received the search result, the process from step S126 is repeated. . Further, it is assumed that it is determined that the search result is received in the determination process of step S127. In this case, the control unit 102 repeats the processing from step S114, and the newly determined moving means using the new search result from the route information providing server device 3 received in step S126 and stored in the storage device 103. The route guidance process according to is performed.

  As a result, the route guidance process is initially executed by performing a route search using the moving means as a car. However, even if the route is moved on the way, the change of the moving means is automatically detected and changed. It is possible to automatically switch to route guidance according to the later moving means. That is, even if the moving means changes during execution of the route guidance processing, the user can seamlessly switch to the route guidance according to the actual moving means without performing any operation.

[Summary of methods for distinguishing moving means]
Next, in the user terminal device 1 of this embodiment, a specific example of a method for automatically determining the moving means of the user using the user terminal device 1 realized as the function of the moving means determining unit 115 will be summarized.

  FIG. 6 is a diagram summarizing information that can be used for determining the moving means and a method for determining the moving means using the information. Various types of information as shown in FIG. 6 can be used as information that can be used to determine the moving means. As described above, the “movement speed” can be grasped based on the past current position acquired through the GPS unit 109 and the time at which the past current position acquired through the time control unit 105 is acquired. This is information that can be calculated from the travel distance and travel time on the route. And as shown in FIG. 6, by setting the range of the moving speed at the time of walking, it is possible to distinguish between when walking and when it is not (for example, when moving by a car). In addition, when the moving speed is “0 km / h”, it is not subject to discrimination. This is because the moving means cannot be specified when the vehicle is in the stop state.

  As described above, the “road attribute” is an attribute (type) of a road on the map corresponding to the current position acquired through the GPS unit 109, and is included in map information, road network data, and pedestrian network data. Can be identified based on information. Then, as shown in FIG. 6, if the current position is an expressway, it can be determined that the moving means is an automobile, and if the current position is a pedestrian road, the moving means is walking. In addition, by taking the moving direction into account, when the one-way road is moving in the opposite direction, it can be determined that the moving means is walking.

  Further, as described above, the “distance from the current position to the destination” can be grasped as a relationship on the map from the current position acquired through the GPS unit 109 to the destination set for route search. . As shown in FIG. 6, if the “distance from the current position to the destination” is not more than a predetermined distance, for example, several hundred meters or less, the moving means is on foot, otherwise the moving means is an automobile. Can be determined.

  In addition, as described above, the scale of the displayed map is 1/10000 (1 / 10,000) or more (for example, 1/5000, 1/5000) when the entire route is displayed. 1000, etc., it can be determined that the distance from the current position to the destination is short. For this reason, if the map displayed to show the whole route is 1/10000 (1 / 10,000) or more, the moving means is walking, and is 1 / 10,000 or less (for example, 1/25000, 1/50000). ,..., Etc., it can be determined that the moving means is an automobile.

  The “traffic information” is information that can be acquired through the network 2, and more specifically, information on VICS (registered trademark). The traffic information of VICS (registered trademark) is information that is collected, processed, edited, and transmitted through communication media by the road traffic information communication system center. VICS (registered trademark) is an abbreviation for Vehicle Information and Communication System. By using such traffic information, if the moving speed of the user is taken into account, it can be used to determine whether the moving means is a walk or a car.

  The “stop position (location)” is information that allows the current position acquired through the GPS unit 109 to be grasped based on somewhere on the map. For example, when the current position several minutes ago is a parking lot, it can be determined that the moving means has been changed from a car to a walk. The “sensor output” is a sensor output from a gyro sensor or an acceleration sensor mounted on the user terminal device 1. By determining whether the sensor output change pattern is a vibration pattern when walking or a vibration pattern when moving a car, the user's moving means can be determined.

  In addition, in the user terminal device 1 of this embodiment, the information indicating “whether charging is in progress” controls whether the charging circuit 107 is supplied with power from the outside as shown in FIG. This is information obtained by the determination by the unit 102. Normally, when the user terminal device 1 is moving on foot, the user terminal device 1 is not supplied with power from the outside. Therefore, when the power is supplied from the outside, the user terminal device 1 is mounted on the vehicle. Can be determined.

  Further, the “movement speed duration” and the “movement speed continuation distance” make it possible to more accurately determine the moving means using the “movement speed”. Therefore, if the movement at 3 km / h to 7 km / h continues, for example, for 30 seconds or more, it is determined that the moving means has gone on foot, or if the movement at 3 km / h to 7 km / h, for example, continues for 500 m or more, the moving means has to be on foot It is possible to determine that the

  The “signal position” is information included in map information, road network information, or pedestrian network information, for example. As a result, although it was moving at a speed of 8 km or more at the beginning, there was a traffic signal in the vicinity of the current position on the moving route even if the moving speed gradually decreased and the moving speed became 3 km to 7 km per hour. If you know, there is a possibility of deceleration due to the presence of traffic lights. Thereby, misidentification of the moving means can be prevented.

  In addition, “confirmation of moving means” indicates that a switching confirmation message is displayed on the display screen of the display unit 110 when confirmation is made that the moving means has changed from a car to a walk, for confirmation input. In such a case, the moving means is switched. In the processing in the user terminal device 1 described with reference to FIGS. 2 and 3, when the confirmation input is not made, it is determined that the moving means has changed, and the moving means is automatically switched. This is different from the case where the presence / absence of “confirmation of moving means” is used.

  In this manner, the moving means can be determined using various information. However, when the determination is based on only one piece of information, the determination accuracy may be poor. Therefore, the moving means can be determined with high accuracy by determining the moving means in consideration of some information.

  For example, the moving means can be determined by using at least “movement speed”. However, there is a possibility that it is erroneously determined that the moving means has changed to “walking” when the moving speed becomes 3 km to 7 km per hour due to traffic congestion when using the car. Therefore, in addition to the “movement speed”, “traffic information (congestion information)” is also taken into consideration, so that the movement means can be determined with higher accuracy.

  In addition to “moving speed” and “traffic information (congestion information)”, whether or not the current position is a road where “traffic information (congestion information)” should be considered by considering “road attribute” Therefore, it is possible to determine the moving means with higher accuracy. In addition to “moving speed” and “traffic information (congestion information)”, “scale of displayed map” is also considered, or “moving speed” and “traffic information (congestion information)” In addition to the above, the “distance from the current position to the destination” may be considered. In this case, in the case where the current position is relatively close to the destination, it is possible to accurately determine whether the travel speed has slowed down due to traffic congestion or has changed to walking. Also, determine the means of transportation by considering "travel speed", "traffic information (congestion information)", "road attributes", "scale of the displayed map" and "distance from current position to destination". It is good also as composition to do.

  In addition to the specific examples described here, the moving means can be determined using at least one of the various types of information shown in FIG. It is of course possible to determine the moving means using other information not shown in FIG.

[Effect of the embodiment]
According to the present invention, the user terminal device 1 appropriately detects the change of the moving means by the user, re-searches the route according to the changed moving means, and provides route guidance according to the changed moving means. It can be done automatically. Thereby, without performing any operation with respect to the user terminal device 1, for example, the state in which the user terminal device 1 functions as a car navigation device automatically changes to a state in which the user terminal device 1 functions as a navigation device for pedestrians. Can be switched to. Moreover, regardless of the location of the moving means, appropriate route guidance according to the moving means can be performed seamlessly.

[Modifications, etc.]
In the above-described embodiment, the function as a navigation device has been described by taking as an example a case where the user terminal device 1 and the route information providing server device 3 are realized by being connected through the network 2. This is not a limitation. By providing the map DB 304, the road network DB 305, the pedestrian network DB 306, and the route search processing unit 308 on the user terminal device 1 side, the navigation device of the present invention can be realized with the configuration of the user terminal device 1 alone.

  In addition, the functions of the route guidance processing unit 114, the moving unit determination unit 115, and the switching control unit 116 of the user terminal device 1 are set as functions of the control unit 102 by software executed in the control unit 102 of the user terminal device 1. It can also be realized. Similarly, the functions of the request extraction unit 307, the route search processing unit 308, and the information provision unit 309 of the route information provision server device 3 are controlled by software executed by the control unit 302 of the route information provision server device 3. It can also be realized as a function.

  Also, in the above-described embodiment, the route is changed to “walking” as an example after the route search is performed with the initial moving means as “automobile” and the route guidance corresponding to the automobile is performed. Although explained, it is not limited to this. It is also possible to cope with a case where the route is changed to “automobile” on the way after the route search is performed by setting the initial moving means as “walk” and the route guidance corresponding to the pedestrian is performed. In short, as a method for determining the moving means, a method for determining when the moving means is an “automobile” may be used. And the determination method when the moving means is “automobile” can also be determined by combining one or more pieces of information shown in the example shown in FIG. Of course, it is also possible to add new information and conditions for determining that the moving means is “automobile”.

  In addition, at the time of route guidance processing, for example, route matching that positions the current position measured by the GPS unit on the nearest route searched, and map matching that positions the current position measured by the GPS unit on the nearest optimal road on the map And may do. The present invention can be applied to the case of performing route matching or the case of performing map matching.

  Further, in the user terminal device 1 of the above-described embodiment, the current position of the own device is acquired through the GPS unit 109, or the current position of the own device is determined by the function of the mobile terminal position information server 4 connected to the network 2. It was acquired, but it is not limited to this. Many user terminal devices 1, which are high-function mobile phone terminals, are equipped with a wireless LAN connection function compliant with the Wi-Fi (Wireless Fidelity) standard. Therefore, by using the wireless LAN function to transmit identification information of a plurality of communicable access points to a predetermined server device, it is possible to receive the current location of the own device from the server device. That is, it is also possible to acquire the current position using the Wi-Fi function.

  When moving on foot, public transportation such as trains, buses, and subways may be used. And since the travel routes of public transportation such as trains, buses, and subways are determined in advance, if you are moving on public transportation routes by matching the current position and map information, It can be determined that you are using public transportation. That is, there is no problem in determining whether the moving means is a walking or a car. In addition, in the case of a route bus, it can be distinguished from the case of other automobiles by taking into account the situation of stopping at the bus stop.

  In the embodiment described above, the map DB 304, the road network DB 305, and the pedestrian network DB 306 are described as being provided in the route information providing server device 3, but the present invention is not limited to this. Information such as the map DB 304, the road network DB 305, and the pedestrian network DB 306 existing in other server devices on the network 2 can be used by the route information providing server device 3. That is, the route information providing server device 3 can be configured as a so-called cloud system including a plurality of server devices on the network 2.

[Others]
Further, as can be seen from the description of the above-described embodiment, the function of the current position acquisition unit of the portable navigation device is realized by the GPS unit 109 and the GPS antenna 109A of the user terminal device 1. In addition, the functions of the route guidance processing unit, the determination unit, and the switching control unit of the portable navigation device are realized by the route guidance processing unit 114, the moving unit determination unit 115, and the switching control unit 116 of the user terminal device 1. In addition, the time control unit 105, the wireless communication unit 101, and the transmission / reception antenna 101A of the user terminal device 1 realize the functions of the current time acquisition unit and the communication unit of the portable navigation device.

  Further, the method described with reference to the flowcharts of FIGS. 2 and 3 is the one to which an embodiment of the navigation method in the portable navigation device according to the present invention is applied. Moreover, the portable navigation device of the present invention can be configured by forming a program for executing the processing shown in the flowcharts of FIGS. 2 and 3 and mounting the program on a high-function mobile phone terminal.

  DESCRIPTION OF SYMBOLS 1 ... User terminal device, 101 ... Wireless communication part, 101A ... Transmission / reception antenna, 102 ... Control part, 103 ... Memory | storage device, 104 ... Operation part, 105 ... Time control part, 106 ... Sensor part, 107 ... Charging circuit, 108 ... Battery 109 109 GPS unit 109 A GPS antenna 110 Display unit 111 Touch panel 112 Sound output unit 113 Speaker 114 Route guidance processing unit 115 Moving unit determination unit 116 Switching control unit DESCRIPTION OF SYMBOLS 2 ... Network, 3 ... Route information provision server apparatus, 301 ... Communication I / F, 302 ... Control part, 303 ... Memory | storage device, 304 ... Map DB, 305 ... Road network DB, 306 ... Pedestrian network DB, 307 ... Request extraction unit, 308 ... route search processing unit, 309 ... information providing unit, 4 ... mobile terminal location information server

Claims (8)

Current position acquisition means;
Current time acquisition means;
Communication means;
Route guidance processing means for performing route guidance through at least display means using the current position acquired by the current position acquisition means and the route search result according to the moving means;
Discriminating means for discriminating the current moving means of the user in consideration of the latest moving speed of the own aircraft and the traffic information related to the moving speed of the current position ;
A switching control means for switching to the route guidance according to the new moving means according to the judgment result when the judgment result of the discrimination means is different from the current route guidance target moving means ,
The latest movement speed is calculated based on the past current position acquired by the current position acquisition unit and the past current time acquired by the current time acquisition unit. Calculated from
The traffic information is obtained from a predetermined information provider through the communication means . Current position acquisition means;
Current time acquisition means;
Communication means;
Route guidance processing means for performing route guidance through at least display means using the current position acquired by the current position acquisition means and the route search result according to the moving means;
Discriminating means for discriminating the current moving means of the user in consideration of the latest moving speed of the own aircraft, the traffic information related to the moving speed of the current position, and the road attribute related to the specification of the moving means,
A switching control means for switching to the route guidance according to the new moving means according to the judgment result when the judgment result of the discrimination means is different from the current route guidance target moving means ,
The latest movement speed is calculated based on the past current position acquired by the current position acquisition unit and the past current time acquired by the current time acquisition unit. Calculated from
The traffic information is acquired from a predetermined information provider through the communication means,
The portable navigation device according to claim 1, wherein the road attribute is acquired from map information according to a current position . Current position acquisition means;
Current time acquisition means;
Communication means;
Route guidance processing means for performing route guidance through at least display means using the current position acquired by the current position acquisition means and the route search result according to the moving means;
The current movement of the user in consideration of the latest movement speed of the aircraft, traffic information related to the movement speed of the current position, and the scale of the map when displaying the entire route from the current position to the destination Discriminating means for discriminating means;
A switching control means for switching to the route guidance according to the new moving means according to the judgment result when the judgment result of the discrimination means is different from the current route guidance target moving means ,
The latest movement speed is calculated based on the past current position acquired by the current position acquisition unit and the past current time acquired by the current time acquisition unit. Calculated from
The traffic information is acquired from a predetermined information provider through the communication means,
A portable navigation device characterized in that the map scale is the map scale when the entire route from the current position to the destination is displayed on the display means . Current position acquisition means;
Current time acquisition means;
Communication means;
Route guidance processing means for performing route guidance through at least display means using the current position acquired by the current position acquisition means and the route search result according to the moving means;
The most recent movement speed of the aircraft, traffic information related to the movement speed at the current position, the scale of the map when displaying the entire route from the current position to the destination, and the route from the current position to the destination Discriminating means for discriminating the current moving means of the user in consideration of the distance of
A switching control means for switching to the route guidance according to the new moving means according to the judgment result when the judgment result of the discrimination means is different from the current route guidance target moving means ,
The latest movement speed is calculated based on the past current position acquired by the current position acquisition unit and the past current time acquired by the current time acquisition unit. Calculated from
The traffic information is acquired from a predetermined information provider through the communication means,
As for the scale of the map, the scale of the map when the entire route from the current position to the destination is displayed on the display means is used,
The portable navigation device characterized in that the distance on the route from the current position to the destination is grasped on a map from the current position acquired by the current position acquisition means to the set destination. . A portable navigation device according to any one of claims 1, 2, 3, or 4 ,
The discriminating means includes the location when stopped, the detection output from the sensor, the presence or absence of external power feeding, the duration of the moving speed, the continuous distance of the moving speed, the traffic signal position that can be discriminated from the map information, A portable navigation device characterized by further determining at least one of response operations for switching confirmation, and determining a user's current moving means. A route guidance processing step in which the route guidance processing means performs route guidance through at least the display means using the current position acquired by the current position acquisition means and the route search result according to the moving means;
A determining step in which the determining means determines the current moving means of the user in consideration of the latest moving speed of the own aircraft and the traffic information related to the moving speed of the current position;
A switching control step in which the switching control means switches to the route guidance according to the new moving means according to the discrimination result when the discrimination result in the discrimination step is different from the current route guidance target moving means;
Have
The latest movement speed is calculated from the movement distance and the movement time on the movement route grasped based on the past current position acquired by the current position acquisition means and the past current time acquired by the current time acquisition means. And
The traffic information is acquired from a predetermined information provider through communication means.
A navigation method characterized by that. A route guidance processing step in which the route guidance processing means performs route guidance through at least the display means using the current position acquired by the current position acquisition means and the route search result according to the moving means;
  The discriminating means discriminates the current moving means of the user in consideration of the latest moving speed of the own aircraft, the traffic information related to the moving speed of the current position, and the road attribute related to specifying the moving means. A discrimination process;
  A switching control step in which the switching control means switches to the route guidance according to the new moving means according to the discrimination result when the discrimination result in the discrimination step is different from the current route guidance target moving means;
Have
The latest movement speed is calculated from the movement distance and the movement time on the movement route grasped based on the past current position acquired by the current position acquisition means and the past current time acquired by the current time acquisition means. And
The traffic information is acquired from a predetermined information provider through communication means,
The road attribute is acquired from the map information according to the current position.
A navigation method characterized by that.   A route guidance processing step in which the route guidance processing means performs route guidance through at least the display means using the current position acquired by the current position acquisition means and the route search result according to the moving means;
Considering the latest moving speed of the aircraft, the traffic information related to the moving speed of the current position, and the scale of the map when displaying the entire route from the current position to the destination A determination step of determining the current means of movement;
A switching control step in which the switching control means switches to the route guidance according to the new moving means according to the discrimination result when the discrimination result in the discrimination step is different from the current route guidance target moving means;
Have
The latest movement speed is calculated from the movement distance and the movement time on the movement route grasped based on the past current position acquired by the current position acquisition means and the past current time acquired by the current time acquisition means. And
The traffic information is acquired from a predetermined information provider through communication means,
As the scale of the map, the scale of the map when the entire route from the current position to the destination is displayed on the display means is used.
A navigation method characterized by that.

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