JP2016186431A - Navigation device, navigation method, and navigation program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To clearly indicate access points for wireless LAN that can be wirelessly connected safely at a current position to enable connection, and when the access points are not present, guide installation locations.SOLUTION: A list creation part 131 creates a list of access points having an SSID registered in an access point DB 107, of access points that can communicate with each other via a wireless LAN communication part 101 at a current position, and selectably displays the list on a display part 111. When access points that can be safely connected are not present at the current position, a searching part 133 searches for the nearest access point from the current position, and a guide processing part 134 guides to the searched access point by using a map.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an apparatus, a method, and a program that enable a user to connect to the Internet through a wireless local area network (LAN) with peace of mind, for example, when away from home.

  A wireless LAN is widely used as one of connection paths to the Internet. 2. Description of the Related Art In recent years, an environment in which a user can connect to the Internet via a wireless LAN even when away from home through an access point for wireless LAN connection installed in a public space such as outdoors or a store has been prepared.

  As described above, some access points for wireless LAN installed in public spaces can be used free of charge, while other access points can be used by receiving a password or the like by paying a fee. Patent Document 1 described later discloses an invention in which an access point that can be satisfactorily communicated is selected from a plurality of surrounding access points and can be used.

JP 2007-142859 A

  In recent years, the number of foreign tourists visiting Japan has increased rapidly and is expected to increase in the future. One of the troubles of foreign tourists visiting Japan is that information communication terminals brought from their home countries cannot be easily connected to a wireless LAN. In order for foreign tourists to connect their information communication terminals to the Internet, it is the easiest and most reliable to connect via a wireless LAN. However, there are currently limited wireless LAN access points available for foreign tourists, and it may take time to find an access point to which the information communication terminal can be connected.

  In addition, there is a concern that there may be access points for the purpose of exploiting personal information called so-called phishing among wireless LAN access points installed in public spaces such as outdoors and stores. . For this reason, as in the invention disclosed in Patent Document 1 described above, it is desired to be able to determine whether or not the access point is a safe access point before selecting an access point capable of performing efficient communication. There is. This is not limited to foreign tourists, but can also be said when Japanese people traveling in the country for sightseeing or business trips use their information communication terminals.

  In view of the above, the present invention can clearly indicate a wireless LAN access point that can be safely connected to the information communication terminal that the user owns at the current position, and secure access when the information communication terminal does not exist. The purpose is to be able to guide you to a place where points can be used.

In order to solve the above problem, the navigation device of the invention according to claim 1 is:
Current position acquisition means for acquiring the current position of the aircraft;
Wireless communication means for connecting to the Internet via a wireless LAN (Local Area Network) access point and enabling communication;
Access point storage means for holding identification information, installation position, connection information necessary for connection, charge / free classification of wireless LAN access point whose provider is clear;
List creation means for creating a list of access points whose identification information is registered in the access point storage means and displaying them on the display means among the access points that can communicate with each other through the wireless communication means at the current position When,
From the list displayed on the display means, a connection control means for receiving a selection input of an access point as a connection destination and controlling to connect to the Internet through the selected access point;
Based on the installation position of the access point storage means when identification information is registered in the access point storage means at the current position and there is no access point that can communicate with each other through the wireless communication means Search means for searching for an access point nearest to the current position of the aircraft acquired by the current position acquisition means;
The display means includes a map, a route to the access point searched by the search means, and a current position of the own device, and guidance processing means for guiding to the access point.

  According to the navigation device of the first aspect of the present invention, the navigation apparatus includes the current position acquisition unit, the wireless communication unit, and the access point storage unit. The list creation means creates a list of access points whose identification information is registered in the access point storage means among the access points that can communicate with each other through the wireless communication means at the current position, and displays the list on the display means. . The connection control means receives a selection input of an access point as a connection destination from the list displayed on the display means, and performs a process of connecting to the selected access point. Thus, the Internet can be used by connecting to the Internet through a secure wireless LAN access point whose provider is clear.

  On the other hand, it is assumed that the identification information is registered in the access point storage unit at the current position, and there is no access point that can communicate with each other through the wireless communication unit. In this case, the search means functions and searches for a safe access point nearest to the current position of the own device based on the installation position of the access point stored in the access point storage means. Then, the guidance processing means shows the map, the route to the safe access point searched by the search means and the current position of the own device, and performs guidance to the safe access point. Thereby, even if there is no safe access point that can be connected at the current position, the user who has the navigation device can be guided to a position where communication with the safe access point is possible.

  According to the present invention, at the current position, the information communication terminal possessed by the user can clearly indicate a wireless LAN access point that can be securely connected by wireless, and can access the Internet through the secure access point. In addition, if there is no wireless LAN access point that can be securely connected wirelessly at the current position, the information communication terminal that the user possesses clearly indicates where the information communication terminal is installed, and the access point communication Can guide to possible positions.

It is a block diagram for demonstrating the structural example of the navigation apparatus for pedestrians of embodiment. It is a figure for demonstrating the example of the data stored in access point DB107. It is a flowchart for demonstrating an example of the preparatory process which a foreign tourist performs in his country. It is a flowchart for demonstrating an example of the process which sets SSID and a password of a paid access point. It is a flowchart for demonstrating the process at the time of the access point navigation mode of the navigation application performed in the navigation apparatus of embodiment. It is a flowchart following FIG. It is a figure for demonstrating the example of the display screen displayed on the display part 111 at the time of access point mode. It is a figure for demonstrating the example of the display screen displayed on the display part 111 at the time of access point mode. It is a figure for demonstrating the route search process in consideration of the access point which can be connected safely.

  Hereinafter, embodiments of the apparatus, method, and program of the present invention will be described with reference to the drawings. The navigation device of the present invention can be realized by, for example, a high-function mobile phone terminal called a tablet PC (Personal Computer), a notebook PC, a smartphone, or the like. In the following, when a foreign tourist from a country whose native language is English, such as the United States or the United Kingdom, visits Japan with a tablet PC, the tablet PC is used as a navigation device for pedestrians. This will be described as an example.

  And the navigation apparatus of embodiment described below has a connection function to wireless LAN. However, since it is not possible to connect to the Internet (cloud) until the wireless LAN is connected, the functions of the navigation device cannot be fully utilized. Therefore, the navigation device according to the embodiment described below functions quickly and easily by connecting to a wireless LAN through a safe access point in Japan, which is a visiting country, without causing stress. Is fully usable.

[Configuration example of navigation device]
FIG. 1 is a block diagram for explaining a configuration example of a navigation device for pedestrians (hereinafter simply referred to as a navigation device) of this embodiment. In the navigation apparatus shown in FIG. 1, the wireless LAN antenna 101A and the wireless LAN communication unit 101 correspond to a Wi-Fi (registered trademark) wireless LAN, and can communicate through a wireless LAN access point located in the vicinity. To. The control unit 102 realizes a function of controlling each unit of the navigation device, and the storage device 103 realizes an information storage holding function. The storage device 103 stores various programs and various data necessary for processing, and is also used as a work area for temporarily storing intermediate results of various processing. The operation unit 104 includes a power on / off switch, several function buttons, and the like.

  The navigation apparatus also includes a map DB 105, a network DB 106, and an access point DB 107. In addition, description with "DB", such as map DB, is used as the abbreviation of a database (Data Base). The map DB 105 and the network DB 106 can store map data and network data according to applications (purposes) such as for pedestrians, cars, bicycles, and motorcycles. Thus, the navigation device can be a navigation device for pedestrians, a navigation device for automobiles, and a navigation device for bicycles or motorcycles.

  In the following, in order to simplify the description, the map DB 105 and the network DB 106 will be described assuming that map data and network data for pedestrians are stored. That is, the map DB 105 stores and holds map data for displaying a map used for navigation processing for pedestrians. The network DB 106 stores and holds network data for pedestrians used when searching for routes. Network data consists of node data and link data.

  The node data is, for example, information indicating points (nodes) such as intersections and branch points, and includes node ID, latitude / longitude, and node type. Link data is information indicating the routes (links that pedestrians can pass) that pedestrians can walk, such as sidewalks, underground streets, arcades, stairs, passages in buildings, pedestrian crossings, and pedestrian bridges, according to the line segments that connect the nodes. , Link ID, node IDs of nodes at both ends of the link, link cost, link type, and the like. Usually, the link cost is determined by the length (distance) of the link or the time required for traffic. The link cost is referred to when searching for a route (route) that minimizes the link cost by a so-called Dijkstra method.

  The access point DB 107 holds information related to wireless LAN access points, and stores and holds information related to secure access points that can be clearly understood by the installer (provider) and do not perform so-called phishing activities. . FIG. 2 is a diagram for explaining an example of data stored in the access point DB 107. In FIG. 2, “Area” indicates an access point installation area, and in this example, it is managed for each prefecture. Of course, this is only an example, and it is possible to manage by city, town or village, or by sightseeing area.

  "Access point name" is a character string that specifies the connection destination, which is required when data communication is performed with a mobile information terminal connected to the network, and provides various network services and Internet connection services. Corresponds to the operator's identification name. This “access point name” can identify the installer, which is one basis for determining that the access point is safe. “Latitude and longitude” indicates the installation position of each access point.

  “SSID” is an abbreviation of “Service Set Identifier” and is identification information of each access point. “Password” is authentication information required when connecting to the access point. The “paid / free classification” indicates whether each access point can be used on the condition of payment of a fee or can be used free of charge. In the “others” field, for example, necessary information such as the presence / absence of encryption and the encryption method can be stored.

  In the access point DB 107 shown in FIG. 2, identification information, installation position, connection information necessary for connection, charge / free classification, and the like of the access point of the wireless LAN whose provider is clear are stored for each access point. ing. From the data stored in the access point DB 107, it can be determined where a secure access point that can be connected is installed.

  The data stored in the access point DB 107 is created, for example, by a company that provides services that provide map data and network data, and is provided through a so-called cloud. The data stored in the access point DB 107 is information on the access point whose installation source is clear. Access points with a clear origin are, for example, those installed by stores such as convenience stores and restaurants, those installed by companies that provide communication networks such as telephone companies, national, local governments, and tourism Some of these are established by commercial organizations (NPOs), tourism associations, and commercial associations.

  In this way, the data stored in the access point DB 107 is created at a predetermined provider and prepared on the cloud so that the navigation device of this embodiment can access and acquire the cloud through the network as necessary. It has become. The access point DB 107 is used when creating a list of access points (access point list) that displays only access points that can be securely connected.

  The time information providing unit 108 provides a current date, current day, and current time, and realizes a so-called timer function that measures a predetermined time interval in accordance with the control of the control unit 102. The sensor unit 109 includes various sensors such as a six-axis sensor and a geomagnetic sensor (orientation sensor) for realizing an autonomous navigation function. The GPS unit 110 and the GPS antenna 110A receive and analyze transmission signals (positioning information) from a plurality of artificial satellites, thereby realizing a function of accurately acquiring (positioning) the current position of the own device.

  The touch panel 113 includes a display unit 111 such as an LCD (Liquid Crystal Display) and a touch sensor 112, and realizes a function as an information display unit and a function as an information input unit. When the navigation function is executed, a guidance map is displayed on the display unit 111, the route obtained as a result of the route search and the current position of the own device are displayed on the map, and route guidance (navigation). Is done. The voice processing unit 114 and the speaker 115 realize a function of emitting an alarm sound or a voice message in accordance with the control of the control unit 102. For example, when the navigation function is executed, a voice message for route guidance is emitted through the voice processing unit 114 and the speaker 115.

  When the navigation function is executed, the route search unit 121 performs a route search, and performs processing for displaying the result on the display unit 111 using the map data of the map DB 105. Specifically, the route search unit 121 displays on the display unit 111 a route search setting screen for receiving information necessary for route search such as a departure place, a waypoint, and a destination. Then, the route search unit 121 receives necessary information such as a departure point, a waypoint, and a destination through the touch panel 113, performs a route search by referring to data stored in the network DB 106 based on the information, and results thereof. Is displayed on the display unit 111 using the map data of the map DB 105.

  In addition, the route search unit 121 can perform route search in consideration of access points. In other words, when the access point mode is selected by the user during route search, the route search unit 121 searches for a route with more access points that can safely connect a route from the departure point to the destination. You can also. The route searched in this way is also displayed on the display unit 111 using the map data of the map DB 105.

  Then, when the user confirms the display and wants to change the searched route, the user performs an operation for performing the route search again through the touch panel 113. In this case, the route search unit 121 functions and the route search process is performed again. In addition, when the user confirms the display and follows the searched route, the user performs an operation for starting navigation to follow the route through the touch panel 113.

  Thereafter, the control unit 102 causes the route guide unit 122 to function and starts navigation (guidance). The route guide unit 122 reads map data for displaying a map of an area including the current position of the own device from the map DB 105, supplies the map data to the display unit 111, and displays a map of the target area on the display unit 111. To do. Then, the route guidance unit 122 performs navigation so that the own device can follow the route set on the network according to the network data of the network DB 106.

  The navigation apparatus of this embodiment includes an access point processing unit 130 including a list creation unit 131, a connection processing unit 132, a search unit 133, and a guidance processing unit 134. The access point processing unit 130 functions when the navigation application is activated and the access point navigation mode is selected, and realizes a function of easily and quickly connecting to a safe access point.

  Specifically, the list creation unit 131 identifies the access point DB 107 among the access points that receive radio waves through the wireless LAN antenna 101A and the wireless LAN communication unit 101 at the current position (the current location of the own device). A list of access points in which information is registered is created and displayed on the display unit 111. That is, the list creation unit 131 displays only the access points that can be safely connected among the access points receiving radio waves through the wireless LAN antenna 101A and the wireless LAN communication unit 101 in the list of access points.

  The list creation unit 131 also displays a list of access points whose identification information is registered in the access point DB 107 among the access points receiving radio waves through the wireless LAN antenna 101A and the wireless LAN communication unit 101. Displayed in descending order of reception intensity detected by the unit 107. This makes it possible to preferentially select an access point that can be communicated safely and satisfactorily.

  The navigation device of this embodiment cannot be connected to the Internet (cloud) until it is connected to the wireless LAN through the access point. For this reason, the connection processing unit 132 is selected from the list of access points displayed on the display unit 111 by the list creation unit 131 according to the selection input of the access point received from the user through the touch panel 113. Process to connect to the access point. In this case, the connection processing unit 132 uses the password of the access point DB 107 to connect itself to the access point selected by the user. Thus, the navigation device is connected to a secure access point selected by the user, accesses the Internet through the access point, and can use various websites provided on the Internet.

  The search unit 133 is an access point that can communicate with each other through the wireless LAN antenna 101A and the wireless LAN communication unit 101 at the current position, and there is no safe access point whose identification information is registered in the access point DB 107. In this case, based on the installation position of the access point DB 107, an access point nearest to the current position of the own device is searched.

  The guidance processing unit 134 shows the map, the route to the access point searched by the search unit 133 and the current position of the own device on the display unit 111, and provides guidance to the searched access point. By the functions of the search unit 133 and the guidance processing unit 134, even if there is no immediately connectable and safe access point, a safe access point near the current position of the own aircraft is searched and the safe access is performed. You can guide to the point. Thereby, it is possible to avoid that the user walks around searching for an access point without guessing.

  For example, the control unit 102 can access a predetermined map server on the Internet and receive provision of the latest map data and the latest network data in accordance with an instruction from the user. The control unit 102 can store and use the latest map data and the latest network data received in the map DB 105 and the network DB 106. That is, the navigation device can access a server device on the Internet and receive provision of necessary information.

[Preparation process in your country (local storage of map DB and access point DB)]
As described above, the user of the navigation device of this embodiment is a foreign tourist from a country that speaks native English. Then, the user stores the map DB and the access point DB used in Japan in the home country in the navigation device so that the navigation device of this embodiment can be connected to a safe access point immediately after visiting Japan. It is necessary to keep.

  FIG. 3 is a flowchart for explaining pre-preparation processing that a foreign tourist who is a user of the navigation apparatus of this embodiment performs in advance in his / her home country. In the home country, an environment for connecting the navigation device of this embodiment to the Internet is prepared. For this reason, the user inputs an instruction to access a download site such as map data provided on the Internet through the touch panel after connecting the navigation device to the Internet. As a result, the control unit 102 accesses a download site such as a map DB on the Internet through the unrelated LAN communication unit 101 and the wireless LAN antenna 101A (step S101).

  The location of the download site such as the map data can be known by searching for information disclosed on the Internet or by describing a commercially available guidebook or a pamphlet distributed by a travel agency. Then, the user displays the input screen provided from the download site on the display unit 111, and designates the language used, the country visited, and the region visited through the touch panel 113 (step S102). For example, the language used is “English”, the visited country is “japan”, the visited areas are “Tokyo”, “kyoto”, “siga” (Shiga), etc. Specify as follows.

  As a result, information indicating the language used, the country visited, and the region visited are transmitted to the download site, and the download site includes map data, network data, access point data for the designated visited region of the designated visited country, And a navigation app. The control unit 102 receives the data and application through the wireless LAN antenna 101A and the unrelated LAN communication unit 101, and stores the received data and application in a predetermined storage unit (step S103).

  That is, the map data is saved in the map DB 105, the network data is saved in the network DB 106, the access point data is saved in the access point DB 107, and the navigation application is saved in a predetermined storage area of the storage device 103, and the processing shown in FIG. To do. The reason why the language used is specified is to enable downloading of map data and navigation applications corresponding to the language used. Thereby, in the case of this example, map data and a navigation application corresponding to English can be downloaded.

  In this way, information for quickly connecting to a safe access point in Japan, a visiting country, and information and applications (software) necessary for navigation processing are arranged in the navigation device of this embodiment. If the download site provides only Japanese information, designation of the country to visit is not necessary.

[Password settings for paid access points]
A foreign tourist who is a user of the navigation device of this embodiment applies for use of a paid wireless LAN, for example, through the Internet in his home country or at a predetermined location such as a Japanese airport after visiting Japan. Can do. In this case, the SSID and password of the access point for connecting to the paid wireless LAN are provided.

  In this case, the user of the navigation device uses the setting tool installed in the navigation device to set the SSID and password of the access point for using the pay wireless LAN. FIG. 4 is a flowchart for explaining processing when an SSID and a password are set using the setting tool of the navigation device. When the user of the navigation device selects an item corresponding to the setting tool from a predetermined menu displayed on the display unit 111, the control unit 102 activates the setting tool.

  First, the control unit 102 receives a selection input of wireless LAN settings from the user through the touch panel 113 (step S201). When the setting of the wireless LAN is selected, the control unit 102 displays a setting screen, accepts a setting input such as an SSID and a password, records the received information in a predetermined area of the storage device (step S202), The process shown in FIG. 4 ends.

  As described above, when the user of the navigation device of this embodiment makes a usage contract for the paid wireless LAN, the information such as the SSID and password of the access point necessary for using the paid wireless LAN is previously stored. Can be set in the navigation device.

[Details of processing in access point navigation mode]
5 and 6 are flowcharts for explaining processing in the access point navigation mode of the navigation application executed in the navigation device of this embodiment. 7 and 8 are diagrams for explaining examples of display screens displayed on the display unit 111 in the access point mode. In the navigation device of this embodiment, when an item corresponding to the navigation function is selected from a predetermined menu displayed on the display unit 111 through the touch panel 113, the control unit 102 performs the flowcharts shown in FIGS. Execute the navigation application that performs the process.

  First, the control unit 102 displays the mode selection screen on the display unit 111 and receives a mode selection from the user through the touch panel 113 (step S301). In the case of the navigation application of this embodiment, the access point navigation mode can be selected in addition to the walking navigation mode, the bicycle navigation mode, the car navigation mode, and the like. The access point navigation mode is a mode for enabling a navigation device to be quickly connected to a secure access point of a wireless LAN.

  Then, the control unit 102 determines whether or not the mode selected in step S101 is the access point navigation mode (step S302). If it is determined in step S302 that the access point navigation mode is not selected, the control unit 102 controls each unit and executes processing corresponding to the selected mode (step S303).

  Assume that it is determined in the determination process in step S302 that the access point navigation mode has been selected. In this case, the control unit 102 controls the wireless LAN communication unit 101 and the list creation unit 131, receives radio waves from neighboring access points through the wireless LAN communication unit 101, and the list creation unit 131 uses the received radio waves. The SSID that identifies the access point is extracted (step S304).

  Next, the list creation unit 131 performs a matching process between each extracted SSID and the SSID of the access point in the area to which the current position belongs among the data stored in the access point DB 107 (step S305). In other words, the matching process in step S305 is a process of extracting information related to a safe access point that is an access point that can communicate with each other through the wireless LAN communication unit 101 and whose SSID is registered in the access point DB 107.

  Then, the control unit 102 determines whether or not information on an access point that can be safely connected has been extracted in the process of step S305 (step S306). Assume that in the determination process in step S306, it is determined that information about an access point that can be safely connected has been extracted. In this case, the control unit 102 further controls the list creation unit 131 to display a list of wireless LAN access points (access point list) that can be safely connected at the current position on the display unit 111 (step S307). .

  In step S307, the access point list displayed on the display unit 111 is normally received as a free access point detected by the none-less LAN unit 101 as shown in FIG. Displayed in descending order of intensity. In the case of the example shown in FIG. 7A, three free access points with SSIDs “AA1...”, “AA2...”, “BB1. It is shown. And the received intensity of the received radio wave is the highest from the access point with the SSID “AA1...”, The second is the radio wave from the access point with the SSID “AA2...”, And the third is the SSID “ It is shown that the radio wave is from the access point “BB1. A message prompting the user to select which access point to use is displayed.

  Note that, as described above, when the user of the navigation apparatus has a contract for using a paid wireless LAN, the SSID and password of the access point for using the paid wireless LAN are stored in the storage device 103. Are stored in a predetermined storage area. Then, at the current position, the navigation device is an access point that is receiving radio waves, the SSID of the access point is stored in the access point DB 107, and the SSID is set in the storage device 103. Assume that it is the same as the SSID of the access point of the paid wireless LAN. In other words, it is assumed that an available paid wireless LAN access point exists in a communicable state.

  In this case, as shown in FIG. 7B, information such as the SSID of the access point of the paid wireless LAN that has been contracted is positioned and displayed at the top of the access point list. In the case of the example shown in FIG. 7B, the access point with the SSID “CC1...” Is charged, but the access point can be used because a fee is paid and a password is set. It is shown that. Furthermore, it is shown that it is possible to connect to three free access points whose SSIDs are “AA1...”, “AA2...”, “BB1.

  And the control part 102 receives the selection input by the user of the access point used as a connecting point from the access point list | wrist displayed on the display part 111 through the touch panel 113 (step S308). Thereafter, the control unit 102 determines whether or not the “Cancel” button has been operated (step S309). As shown in FIG. 7, the “Cancel” button is displayed below the access point list, and is operated when the navigation application is terminated.

  Assume that in the determination processing in step S309, it is determined that the “Cancel” button has not been operated. In this case, the control unit 102 controls the connection processing unit 132 to use the SSID and password of the access point selected in step S308 to move the own device (the navigation device) to the selected access point. To connect. Thus, the navigation device can be connected to the Internet through the access point, and can access various websites on the Internet. If it is determined in the determination process in step S309 that the “Cancel” button has been operated, the control unit 102 ends the navigation application shown in FIGS.

  On the other hand, in the determination process in step S306, it is determined that the information about the access point that can be safely connected cannot be extracted by the process in step S305. In this case, there is no access point that can be safely connected at the current position. Therefore, the control unit 102 proceeds to the process of step S311 in FIG. 6 and controls the search unit 133 to perform a search process of access points that can be safely connected in the vicinity (step S311). Specifically, the search unit 133 refers to the latitude and longitude indicating the installation position of the access point in the access point DB 107, and extracts one or more access points close to the current position of the own device acquired through the GPS unit 110.

  Next, the search part 133 displays the map containing the installation position of the access point extracted in step S311 on the display part 111 using the map data of map DB105 under control of the control part 102 (step S312). In this case, for example, as shown in FIG. 8A, a map showing the installation position of the access point that can be safely connected that is present near the current position (Are here) indicated by a black circle is displayed on the display unit. 111. In the case of the example shown in FIG. 8A, it is indicated that the access points AP1 and AP3 are free access points and the access point AP2 is a charged access point.

  And the control part 102 receives the selection input of the target access point from a user through the touch panel 113 (step S313). In the selection input, a target access point can be selected by touching a position on the touch panel 113 on which a pin indicating the installation position of the target access point is displayed. Thereafter, as shown in FIG. 8A, the control unit 102 determines whether or not the “Cancel” button displayed on the lower side of the map display has been operated (step S314).

  When it is determined in the determination process in step S314 that the “Cancel” button has been operated, the control unit 102 ends the navigation application shown in FIGS. Also, in the determination process in step S314, it is determined that the “Cancel” button has not been operated. In this case, the control unit 102 controls the search unit 133 to search and specify a route from the current position to the selected access point using the network data of the network DB 106 (step S315).

  Next, the control unit 102 controls the guidance processing unit 134, and uses a map data in the map DB 105 to display a map including a route from the current position to the selected access point as shown in FIG. 8B. While displaying on the display part 111, a present position is displayed on the said map and guidance is started (step S316). As a result, even if there is no access point that can be safely connected at the current position, it is possible to promptly guide to a location where communication with an access point that can be connected safely in the vicinity is possible. .

  Then, the control unit 102 receives an operation input from the user through the touch panel 113, and determines whether or not the “Back” button provided on the lower side of the map in FIG. A determination is made (step S318). When it is determined in the determination process in step S318 that the “Back” button has been operated, the control unit 102 executes the process from step S312 (display of the access point selection screen shown in FIG. 8A). The processing is repeated so that the access point can be reselected.

  If it is determined in the determination process in step S318 that the “Back” button has not been operated, it is determined whether or not the radio wave from the selected access point has been received (step S319). If it is determined in step S319 that the radio wave from the selected access point has not been received, the processing from step S317 is repeated. If it is determined in step S319 that the radio wave from the selected access point has been received, the process returns to step S304 shown in FIG. 5 and the process from step S304 is performed.

  Thereby, when reaching an area where radio waves from a connectable access point can be received safely, an access point list can be displayed, and a target access point can be selected from the list and connected. That is, even when there is no access point that can be safely connected at the current position, it is possible to promptly guide to a place where radio waves can be received from the access point that can be connected safely and to connect to the access point. Can be supported.

[Multilingual guidance display at wireless LAN spot]
As described above, when a secure access point is selected from the access point list and connected, a web page related to the use of the access point on the cloud is displayed on the display unit 111 of the navigation device and used. Various precautions can be provided. For example, information such as an available period and an available area can be provided. In this case, a Web page corresponding to the language used can be displayed by selecting and inputting the language used for the navigation device. In this case, it is possible to prepare a web page in a multilingual on the cloud and provide a web page corresponding to the selected language used, or a web page created in a predetermined language used. Can be translated and displayed on the navigation device side.

When the web page is translated on the navigation device side, the web page is connected to the Internet through the already selected secure access point, so that the translation can be performed using the translation dictionary on the cloud. Alternatively, the web page itself can be translated using a translation service existing on the cloud. Of course, it is also possible to translate web pages using a translation dictionary prepared in advance on the navigation side.
As described above, after connecting to the Internet through a secure access point, it is possible to provide the navigation device user with guidance and precautions regarding the use of the access point according to the language used through the Web page. That is, information such as guidance can be provided in multiple languages.

[Route search considering access points that can be securely connected]
Since the navigation device of this embodiment includes the access point DB 107 as described above, the route search can be performed in consideration of the access point held in the access point DB 107 and specified by the information on the access point. That is, it is possible to search for a route that can move to the destination by communicating only with an access point that can be safely connected.

  FIG. 9 is a diagram for explaining a route search process in consideration of an access point held in the access point DB 107 and specified by information on the access point. FIG. 9A is a diagram showing a route search screen (Route Search screen) that is an input screen for conditions for route search. In the route search screen shown in FIG. 9 (A), a departure point (Departure Pont), a transit point (Stopover), a destination (Destination), a priority transportation system (Priority), and the like can be set. For each of these items, setting items can be input through a so-called software keyboard displayed on the lower side of the display unit 111.

  In the case of the navigation device of this embodiment, for example, in the route search screen (Route Search screen) in the walking navigation mode, as shown in FIG. A check box Cb for instructing this is provided. By checking the check box Cb, it is possible to instruct to perform a route search considering an access point. When the route search is performed in a state where the check box Cb is checked, the route search unit 121 performs a route considering the storage data of the access point DB in addition to the network data of the network DB 106. Perform a search.

  For example, as shown in FIG. 9B, a case where “XX Hotel (XX hotel)” indicated by a flag is the current position and a route search to “XX Station (XX station)” is performed. Think. In FIG. 9B, the positions indicated by a large number of black circles are the installation positions with the access points that can be safely connected that are specified by the data managed in the access point DB 107. In this case, the route search unit 121 first identifies a link (road) where an access point that can be safely connected is located on a route for searching for a route, and access that can be safely connected through the identified link. The link cost of the link is adjusted according to the number of points installed.

  In other words, the link cost of a link in which many access points that can be safely connected are installed is reduced, and the link cost of a link in which no access point that can be connected safely is installed or the number of installations is small. As described above, the route search unit 121 searches for a route so that the link cost is minimized. In FIG. 9B, the route search unit 121 connects safely as indicated by the arrow. The route to the destination can be searched by following the links where many possible access points are installed. In the case of the route shown in FIG. 9B, access points that can be safely connected are not installed or do not pass through a few links. Therefore, it is possible to search for a route that can move to the destination by communicating only with an access point that can be safely connected.

[Route guidance using the reception strength of radio waves from access points]
The access points that can be safely connected and their installation positions can be grasped from the stored data in the access point DB 107 as shown in FIG. 9B. For this reason, the route guidance unit 122 can perform route guidance in consideration of the installation positions of access points that can be safely connected and the reception intensity of radio waves from those access points.

  Specifically, route guidance is performed so that the reception intensity of radio waves from a safe access point located in the traveling direction is increased. When the radio wave from a safe access point located in the direction of travel becomes small, it is likely that the direction of travel is wrong, so it is possible to output a warning message or prompt the route confirmation It becomes.

[Effect of the embodiment]
The navigation device according to the above-described embodiment can clearly notify the user of the presence of an access point that can be safely connected at the current position using an access point list. As described above, only information about access points that can be securely connected is displayed in the access point list. And it can connect easily with the access point which can be connected safely selected by the user. Further, when there is no access point that can be safely connected at the current position, it is possible to clearly indicate where the access point is installed. And it can guide quickly to the position which can communicate with the access point which can be connected safely.

  In particular, the navigation device of the above-described embodiment is used by foreign tourists whose native language is English, but after visiting Japan, an access point that can be securely connected immediately is found, Connect to an access point. Therefore, it is possible to connect to the access point quickly and use the Internet as in the home country. That is, the Internet can be used without stress. In addition, since only a secure access point is presented to the user, there is no concern that personal information will be illegally exploited by actions such as so-called phishing.

[Modifications, etc.]
In the above-described embodiment, the GPS unit 110 and the GPS antenna 110A have been described as having a function as a current position acquisition unit. However, it is not limited to this. For example, a method of identifying the current position of the own device from the positional relationship with the access point according to the SSID and the received electric field strength of the access point that can be received by the wireless LAN communication unit 101 may be used.

  In addition, if you decide to visit a place that you did not plan after visiting Japan, you will obtain map data, network data, and access point data for the new area you have visited in Japan. Then, it can be stored and used in the map DB 105, the network DB 106, and the access point DB 107.

  In the above-described embodiment, a case has been described in which a foreign tourist from a country whose native language is English uses the navigation device of the above-described embodiment. However, the present invention is not limited to this. is not. The present invention can be applied to a navigation apparatus used by foreign tourists from various countries using various languages. The visiting country is not limited to Japan, and the present invention can be applied to a navigation device used when visiting a country other than Japan.

[Others]
As can be seen from the description of the embodiment described above, the functions of the current position acquisition unit, the wireless communication unit, the access point storage unit, the list creation unit, the connection processing unit, the search unit, and the guidance processing unit of the navigation device are implemented. A GPS unit 110, a wireless LAN communication unit 101, an access point DB 107, a list creation unit 131, a connection processing unit 132, a search unit 133, and a guidance processing unit 134 are realized.

  5 and 6 corresponds to an embodiment of the navigation method of the present invention. A program for executing the processing of the flowcharts shown in FIGS. 6 and 7 corresponds to an embodiment of the navigation program of the present invention. The functions of the list creation means, connection processing means, search means, and guidance processing means can be realized as functions of the control unit 102 by software executed in the control unit 102. That is, the functions of the list creation means, connection processing means, search means, and guidance processing means can be realized as functions of a control unit that executes the software by software.

DESCRIPTION OF SYMBOLS 101A ... Wireless LAN antenna, 101 ... Wireless communication part, 102 ... Control part, 103 ... Memory | storage device, 104 ... Operation part, 105 ... Map DB, 106 ... Network DB, 107 ... Access point DB, 108 ... Time information provision part, DESCRIPTION OF SYMBOLS 109 ... Sensor part, 110 ... GPS part, 110A ... GPS antenna, 111 ... Display part, 112 ... Touch sensor, 113 ... Touch panel, 114 ... Voice processing part, 115 ... Speaker, 121 ... Route search part, 122 ... Route guidance part , 130 ... access point processing unit, 131 ... list creation unit, 132 ... connection processing unit, 133 ... search unit, 134 ... guidance processing unit

Claims (6)

Current position acquisition means for acquiring the current position of the aircraft;
Wireless communication means for connecting to the Internet via a wireless LAN (Local Area Network) access point and enabling communication;
Access point storage means for holding identification information, installation position, connection information necessary for connection, charge / free classification of wireless LAN access point whose provider is clear;
List creation means for creating a list of access points whose identification information is registered in the access point storage means and displaying them on the display means among the access points that can communicate with each other through the wireless communication means at the current position When,
From the list displayed on the display means, a connection processing means for receiving a selection input of an access point as a connection destination and performing a process of connecting to the selected access point;
The installation of the access point storage means when there is an access point that is capable of communicating with each other through the wireless communication means at the current position, and there is no access point whose identification information is registered in the access point storage means Search means for searching for one or more access points nearest to the current position of the own aircraft acquired by the current position acquisition means based on the position;
Navigation comprising: a map, a route to the access point searched by the search means, and a current position of the own device, and guidance processing means for guiding to the access point on the display means. apparatus. The navigation device according to claim 1,
The list creating means positions an access point that can be used free of charge as a higher rank than an access point that can be used for a fee. The navigation device according to claim 2,
Comprising setting information storage means for receiving and storing setting input of identification information of an access point provided by paying a fee and connection information necessary for connection;
The navigation apparatus characterized in that the list creation means preferentially positions an access point specified by the identification information stored in the setting information storage means. A navigation device according to claim 1, claim 2 or claim 3, wherein
Means for accepting at least an instruction input of a starting point and a destination and searching for a route from the starting point to the destination, wherein the access point is stored in consideration of an access point installation position of the access point storage unit; Route search means for searching for a path capable of communicating with an access point whose information is stored in the point storage means;
A route that uses the current position acquired by the current position acquisition unit and guides using one or both of the map display and the voice output so as to move along the route searched by the route search unit A navigation device comprising: guidance means. Current position acquisition means for acquiring the current position of the device itself, wireless communication means for enabling communication by connecting to the Internet through a wireless LAN (Local Area Network) access point, and a wireless LAN access point whose provider is clear A navigation method used in a navigation device comprising identification information, installation position, connection information necessary for connection, and access point storage means for holding a charge / free charge class,
The list creation means creates a list of access points whose identification information is registered in the access point storage means among the access points that can communicate with each other through the wireless communication means at the current position, and displays the list on the display means. List creation process to be displayed,
A connection processing unit that receives a selection input of an access point as a connection destination from the list displayed on the display unit, and performs a process of connecting to the selected access point; and
When there is no access point at which the identification information is registered in the access point storage unit, the search unit stores the access point storage when the access point can communicate with each other through the wireless communication unit at the current position. A search step of searching for an access point nearest to the current position of the own machine acquired by the current position acquisition means based on the installation position of the means;
The guidance processing means includes a guidance processing step for providing guidance to the access point by indicating on the display means a map, a route to the access point searched by the search means, and a current position of the own device. A navigation method characterized by the above. Current position acquisition means for acquiring the current position of the device itself, wireless communication means for enabling communication by connecting to the Internet through a wireless LAN (Local Area Network) access point, and a wireless LAN access point whose provider is clear A computer mounted on a navigation device comprising identification information, installation position, connection information necessary for connection, and access point storage means for holding a charge / free classification,
List creation means for creating a list of access points whose identification information is registered in the access point storage means and displaying them on the display means among the access points that can communicate with each other through the wireless communication means at the current position When,
From the list displayed on the display means, a connection processing means for receiving a selection input of an access point as a connection destination and performing a process of connecting to the selected access point;
The installation of the access point storage means when there is an access point that is capable of communicating with each other through the wireless communication means at the current position, and there is no access point whose identification information is registered in the access point storage means Search means for searching for one or more access points nearest to the current position of the own aircraft acquired by the current position acquisition means based on the position;
The display means shows a map, a route to the access point searched by the search means, and a current position of the own device, and functions as a guidance processing means for guiding to the access point. Navigation program.

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