JP4944693B2 - NAVIGATION SYSTEM, PORTABLE TERMINAL DEVICE, SERVER DEVICE, PORTABLE TERMINAL DEVICE PROGRAM, SERVER DEVICE PROGRAM, AND GUIDANCE METHOD - Google Patents

Description

  The present application relates to a technical field such as a navigation system that performs guidance when a user moves to a predetermined destination.

  2. Description of the Related Art Conventionally, there is a navigation system in which a GPS (Global Positioning System) receiver or the like is mounted on a mobile terminal device such as a mobile phone, and a map around the user's current position is displayed on the screen and guidance to a destination is performed. Are known.

  Such a navigation system has been devised in various ways for the user to recognize the current position and to easily grasp the route to the destination (see Patent Documents 1 to 4).

  For example, Patent Document 1 discloses a navigation device that displays a guidance signboard character string and guides a user to a predetermined destination in an underground shopping mall or the like.

  Patent Document 2 discloses a navigation device that displays a guidance route together with a map and displays a three-dimensional shape and a landmark of a building when a user views from the intersection when approaching the intersection. .

  Further, Patent Document 3 discloses a navigation device that displays a layer for each hierarchy when guiding a route with a different hierarchy.

  Further, Patent Document 4 discloses a navigation device that guides an operator to a destination by switching a display form according to walking or vehicle.

JP 2003-344093 A JP 2000-171264 A JP 2003-14481 A JP 2007-78655 A

  By the way, when such a guidance is performed, when the user moves to the destination, it is generated by connecting a plurality of routes on the map on the screen of the mobile terminal in order to guide the user. Although the guidance route and the position of the user are shown and displayed, there is a case where the user gets lost when reaching the waypoints of the plurality of routes.

  In addition, when the route to the destination passes through a general pedestrian road, passes through an underground mall where the user's position cannot be detected, and passes through the pedestrian road again, the user walks. You may get lost when you reach the junction between a public road and an underground street. In addition, if the entrance of the underground shopping center passage is wrong, the target exit may naturally be different, and it is very important to accurately guide the entrance and exit.

  In this application, the solution of such a problem is an issue, and an example of the purpose is to provide a navigation system that can be guided accurately when the environmental conditions change when the user moves to the destination. It is in.

In order to solve the above problems, according the invention described in claim 1, the guide route (4) searching previously stored route data used to perform the pre Symbol accordance guide route conditions input by the user using route data and searching for a route to a destination of the user, the user by displaying the result of the search the portable terminal device for a guidance route to the route data is generated and is connected on the basis of (MP) A navigation system (S) that guides the route, storing route data including attribute information indicating route attributes, and guiding text data for guiding the user specified by the route attributes (9), and storage means for storing in association with the route data including attribute information indicating attributes of said path (11, 26), first path data for said guide And detecting means for detecting the current position of the user before text data reaches the connection point to be connected to other routes data associated (27), before reaching the connection point, reaches the connection point And a notifying means (28) for notifying the user of the text data for guidance associated with the other route data later, the text data for guidance at least indicating the current position of the user. The user who is associated with any one of route data corresponding to an undetectable route, route data corresponding to a route in a building, and route data corresponding to a route on a different floor and detected by the detection means It is determined whether the distance between the current position and the connection point immediately before reaching the route data associated with the guidance text data is equal to or less than a predetermined threshold value. Determination means (28), wherein the notification means outputs the guidance text data when the distance reaches a predetermined threshold or less as a result of the determination and before the connection point is reached. In the case where icon data for displaying an icon is stored in advance in the storage means, and the route data included in the guide route corresponds to an indoor route, the guide route The display further includes a display means (28) for displaying the entrance and exit of the indoor route with icons and displaying the icons by connecting them with straight lines.

The invention according to claim 4 is a server device (SV) included in the navigation system according to claim 1, and is connected to the portable terminal device via a communication means (NW). inducing the the server apparatus constituting the navigation system, the guidance route using the route data and searching for a route to a destination of the user according to the condition, the search result to the plurality of route data is connected based A route is generated.

The invention according to claim 5 is a portable terminal device included in the navigation system according to claim 1, wherein the navigation system is connected to the portable terminal device via communication means. Detecting means for detecting the current position of the user before one route data reaches a connection point connected to another route data associated with the guidance text data in the portable terminal device to be configured; Before reaching the connection point, notifying means for notifying the user of the text data for guidance associated with the route data after reaching the connection point, and the detection means detected by the detection means The distance between the current position of the user and the connection point just before reaching the route data associated with the guidance text data is below a predetermined threshold Determining means for determining whether or not there is the guidance means, and when the distance reaches a predetermined threshold or less as a result of the determination, the notification means The text data is notified to the user, and when the route data included in the guidance route corresponds to an indoor route, when the guidance route is displayed, the entrance and the exit of the indoor route are stored in the storage unit. And a display means for displaying the icons by connecting them with straight lines .

According to a sixth aspect of the invention, a computer is caused to function as the server device according to the fourth aspect.

According to a seventh aspect of the invention, a computer is caused to function as the portable terminal device according to the fifth aspect.

The invention according to claim 8 stores route data used for searching for a guidance route and route data including attribute information indicating the attribute of the route, and is specified by the attribute of the route. the text data for the guide for guiding the user, and stores in association with the route data includes attribute information indicating an attribute of the path, advance further stores icon data for displaying icons, further The guidance text data is at least one of route data corresponding to a route in which the current position of the user cannot be detected, route data corresponding to a route in a building, and route data corresponding to a route on a different floor. searching for a route to a destination of the user has been correlated, using the plurality of route data in accordance with the guidance route conditions input by the user The navigation method for guiding the user by displaying a guidance route generated by connecting the plurality of route data based on the search result by a portable terminal device, wherein one route data is A detection step of detecting the current position of the user before reaching the connection point connected to the other route data to which the text data for guidance is associated, and the connection point is reached before reaching the connection point; The notifying step of notifying the user of the text data for guidance associated with the other route data after being performed, the current position of the user detected by the detecting step, and the text data for guidance Further comprising a determination step of determining whether the distance from the connection point immediately before reaching the route data associated with is less than or equal to a predetermined threshold, The notifying step is a step of notifying the user of the text data for guidance before reaching the connection point when the distance reaches a predetermined threshold or less as a result of the determination, When the route data included in the guide route corresponds to an indoor route, when the guide route is displayed, the entrance and the exit of the indoor route are displayed as icons, and the icons are connected by a straight line. And a display step .

  Hereinafter, the best embodiment of the present application will be described with reference to the accompanying drawings. In addition, embodiment described below is embodiment at the time of applying this invention with respect to the communication navigation system for pedestrians. FIG. 1 is a diagram showing an example of a map displayed by the pedestrian communication navigation system according to the present embodiment.

  In the communication navigation system S for pedestrians of this embodiment, when the pedestrian 5 operates the mobile phone MP to set a predetermined destination, the server SV starts from the current position of the pedestrian 5 who operates the mobile phone MP. A route to the ground is searched, and based on the searched route, the mobile phone MP uses the map 3 around the current position of the pedestrian, the guide route 4 for guiding the pedestrian to the destination, and the pedestrian 5. The current position is displayed on the display screen 2, and the pedestrian 5 can be accurately guided to the destination by such display. Also, in places where it is difficult to display routes such as underground roads or stations, POI icons 7 and 8 functioning as “icons” of the present application are used to place entrances and exits on a map, and the POI icons 7 and 8 are linearly connected. It is designed to display a tied image. The POI icons 7 and 8 allow the pedestrian 5 to easily recognize, for example, the positions of the entrance and exit in the station premises at a glance. Further, at a position where the pedestrian 5 is likely to get lost on the guidance route 4 (for example, at an intersection or an entrance / exit of a station), the guidance route 4 displayed on the map 3 before the pedestrian 5 reaches the position. In addition, the current position of the pedestrian 5 is displayed, and guidance text 9 for accurately guiding the pedestrian 5 is displayed at the lower part of the display screen 2, for example. By this guidance text 9, the pedestrian 5 will be guided accurately to the destination by following the guidance route 4 searched by the server SV without hesitation.

-Outline of configuration and functions of communication navigation system for pedestrians-
First, with reference to FIG. 2, the structure and function of the communication navigation system for pedestrians in this embodiment are demonstrated. FIG. 2 is a diagram illustrating an example of a hardware configuration of the communication navigation system for pedestrians according to the present embodiment.

  As illustrated in FIG. 2, the communication navigation system S for pedestrians includes a server SV as an example of a server device and a plurality of mobile phones MP as an example of a portable terminal device.

  The server SV and the cellular phone MP can transmit and receive data to and from each other via a network NW as an example of a communication means (for example, using TCP / IP (Transmission Control Protocol / Internet Protocol) as a communication protocol) Data can be sent and received). The network NW is constructed by, for example, the Internet, a dedicated communication line (for example, a CATV (Community Antenna Television) line), a mobile communication network (including a wireless base station, etc.), a gateway, and the like.

  In the communication navigation system S for pedestrians of this embodiment, the pedestrian 5 operates the operation unit 25 of the mobile phone MP to set the route search condition to the destination, and the route search request based on the route search condition. Is performed on the server SV to start processing for guiding the pedestrian 5.

-Configuration and function of server SV-
Next, the configuration and function of the server SV will be described with reference to FIGS. FIG. 3 is a block diagram illustrating an example of a schematic configuration of the server SV according to the present embodiment, FIG. 4 illustrates an example of a guidance text message, and FIG. 5 illustrates an example of guidance route information generated by the server. .

  As shown in FIG. 3, the server SV is connected to a storage unit (for example, a hard disk) 11 as an example of a storage unit for storing various programs, data, and the like, and a network NW, and communicates with a mobile phone MP. A communication control unit 12 (for example, a network adapter) to be controlled, and a system control unit 13 including a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), etc. 14 to each other.

  The storage unit 11 displays a map on the screen of the mobile phone MP, and also provides map data used for searching the guidance route 4 and guidance for accurately guiding the pedestrian 5 according to the guidance route 4. Text data is stored. This map data includes, for example, terrain drawing data for drawing terrain, road drawing data for drawing roads, facility categories (hotels, restaurants, airports, stations, shopping centers, convenience stores, parks, sports facilities, (Including hospitals, golf courses, etc.), such as facility drawing data, detailed information about roads corresponding to the route data of the present application, and POI icon data for displaying POI icons 7 and 8, etc. ing.

  Detailed road-related information is a plurality of road data, and each road data is, for example, a road environment that is managed by dividing the road type, its name, environment type, classification type, classification type, and hierarchy type. Road attribute information such as conditions, link eigenvalue information that specifies the identification number of the link connected to the road data, although not shown, the nodes to which the link is connected (road branching points, junctions, intersections, etc., state change points Etc.).

  Here, the road type and its name indicate the form of road data. The road type is classified into station yard, sidewalk, combined road, and underground road, and the name is given to the road data. It is the name that has been made. The environmental type refers to road data that is classified as non-normal and normal, with ordinary roads as normal and roads in the park, pedestrian bridges, passages in stations, underground roads, etc. as non-normal. It is expressed as Moreover, the classification type indicates a specific form of road data, and is classified into a station yard, a park, a pedestrian road, a road for both cars and pedestrians, a pedestrian underground road, a pedestrian road, etc. It is a thing. In addition, the type is a type in which road data is divided into indoor and outdoor types, and a hierarchy type is a type in which road data is divided into basement and ground. Note that the floor type may be more specifically divided into floors. The link specific place information is an identification number for specifying coordinate information including latitude and longitude of road data.

  The detailed information on the road further includes information such as the presence or absence of an elevator or escalator in a facility such as a station, the presence or absence of a pedestrian bridge or an intersection on a pedestrian road.

  The text data for guidance is stored in association with the attribute information of the road. For example, as shown in FIG. 4, various guidance text messages for accurately guiding pedestrians are stored in the station premises. It is stored in correspondence with each of the facilities, parks, stairs, escalators, pedestrian bridges, and underground passages. As described above, the guidance text data is associated with attribute information indicating a place where the current position of the pedestrian cannot be detected by the GPS positioning unit 26 or the like, or a place in a building or a different floor.

  In the system control unit 13, the CPU performs overall control of each unit of the server SV by reading and executing various programs such as a server device program stored in the ROM or the storage unit 11. The server device program is a processing program performed by the server SV based on a pedestrian route search request transmitted from the mobile phone MP.

  Specifically, the system control unit 13 searches for a guidance route to a destination using a plurality of road data based on a route search condition set by the user using the mobile phone MP, and uses the mobile phone MP. The text data for guidance specified by the attribute of the road data transmitted in this way is searched, and the result is transmitted to the mobile phone MP.

  Here, an example of a search result transmitted from the server to the mobile phone will be described with reference to FIG.

  As shown in FIG. 5, the server SV connects a plurality of road data via a waypoint to the destination by the system control unit 13 for a route from the current position (departure point) of the pedestrian to the destination. Is generated and transmitted to the mobile phone MP as a search result. Each route data is assigned a route ID (for example, 001 to 005) and its order is managed. In the mobile phone MP, the guidance route is displayed on the map in the order of the route ID, and the pedestrian can be guided to the destination.

  Note that the various programs may be downloaded from another server, for example, or may be recorded on a recording medium such as a CD-ROM and read via a drive.

-Mobile phone configuration and functions-
Next, the configuration and function of the mobile phone MP will be described with reference to FIGS. FIG. 6 is a block diagram illustrating an example of a schematic configuration of the mobile phone MP according to the present embodiment, and FIG. 7 is a diagram illustrating an example of data stored by associating the search text information with the guidance text data.

As shown in FIG. 6, the mobile phone MP is connected to a mobile communication network by transmitting and receiving radio waves with a base station, and wireless communication for controlling communication with other mobile phones MP and servers connected to the network NW. A voice input unit 22 that has a microphone 21 and a D / A converter, for example, and generates voice data corresponding to the voice and outputs the voice data to the wireless communication unit 21 when a user's voice is input from the microphone. And, for example, an audio output unit 23 that includes a speaker, an amplifier circuit, etc., generates audio corresponding to the audio data supplied from the wireless communication unit 21, and produces sound through the speaker, Communication and data communication with a server or the like are possible. Such communication methods include, for example, the PDC (Personal Digital Cellular) method, I
An MT (International Mobile Telecommunication) system, a PHS (Personal Handyphone System) system, etc. are adopted.

  In addition, the mobile phone MP includes a display unit 24 (for example, a liquid crystal display) corresponding to the display screen 2 that displays information such as characters and images, and an operation unit 25 (for example, dial buttons) that receives operation instructions from pedestrians. , Cursor buttons, etc.), various programs (eg, operating system, web browser program, map application, etc.) data, and storage unit 27 (eg, flash memory) that stores icon data for displaying POI icons on the map Etc.).

  Furthermore, the mobile phone MP receives a radio wave including a satellite orbit and time data transmitted from a GPS satellite, and calculates a current position (latitude and longitude) of the mobile phone MP based on the received radio wave. It has. The GPS positioning unit 26 starts positioning the current position under the control of the system control unit 28. Once the positioning is started, the GPS positioning unit 26 continues in parallel with other processing (including program execution) by the system control unit 28. Positioning.

  Furthermore, the cellular phone MP includes a system control unit 28 including a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and the like. The system control unit 28 and each unit have a system bus 29. Are connected to each other.

  The system control unit 28 controls the entire mobile phone MP by reading out and executing various programs stored in the ROM and the storage unit 27 by the CPU, and includes a detection unit, a notification unit, a determination unit, and a display of the present application. It is designed to function as a means.

  Specifically, when the user designates the destination using the operation unit 25, the system control unit 28 sets destination information indicating the name, latitude and longitude of the designated destination in the RAM, A route search request based on a route search condition including the destination information and current position information indicating the current position positioned by the GPS side unit is transmitted to the server SV.

  Further, upon receiving the search result information transmitted from the server SV, the system control unit 28 temporarily stores the search result information on the RAM. In addition, a search request for guidance text data corresponding to road data having an unusual attribute among road data acquired from the server SV is transmitted to the server SV. Further, when the system control unit 28 receives the search result information transmitted from the server SV based on the search request for the guidance text data, the system control unit 28 temporarily stores the guidance text data as the search result information on the RAM.

  Then, the system control unit 28 displays a map, route data, and the current position of the pedestrian on the display screen 2 based on the search result information, and starts guidance for the pedestrian.

  Further, when the search result information acquired from the server SV includes guidance text data, the system control unit 28 sets the guidance text data as guidance text data of the corresponding road data, as shown in FIG. The guidance text data is associated with the search result information acquired from the server SV by the route search request and temporarily stored in the storage unit 27.

  Here, an example of data used when displaying a guidance route on a map will be described with reference to FIG.

  As shown in FIG. 7, the search result information acquired from the server SV includes a route identification number including a route ID, a target type, detailed contents of road data, a column number in the entire guidance route, and Guidance text data is associated and managed. On the display screen 2, the guide route 4 is displayed on the map 3 in the order of the route ID.

  In addition, for example, when the road data attribute is in a station premises corresponding to an indoor route, the system control unit 28 corresponds to an entrance and an exit in the station premises when displaying the guide route 4 on the display screen. The POI icons are arranged at the positions to be displayed, and the POI icons are connected by a straight line to be displayed.

  Further, when the guidance to the pedestrian is started, the system control unit 28 reaches the waypoint where the road data corresponding to the current position of the pedestrian is connected to the road data in which the guidance text data is set. Before, the current position of the pedestrian is detected and specified by the GPS positioning unit 26. Further, the system control unit 28 determines whether or not the distance between the current position of the user and the waypoint immediately before reaching the road data in which the guidance text data is set is equal to or less than a predetermined threshold. As a result, when the distance has reached a predetermined threshold value or less, and before reaching the previous transit point, the guidance text data set in the road data after the transit point is displayed on the display screen 2 as characters that flow. Display.

  Note that various programs may be downloaded from, for example, the server SV or may be read from a recording medium such as a memory card.

-Operation of communication navigation system for pedestrians-
Next, operation | movement of the communication navigation system S for pedestrians is demonstrated using FIG. FIG. 8 is a flowchart showing a processing example when guiding a pedestrian to the destination.

  First, when starting the communication navigation system S for pedestrians, the pedestrian operates by operating the operation unit 25 of the mobile phone MP. Specifically, the communication navigation system S for pedestrians is activated when an item corresponding to the guidance guidance is selected by the pedestrian on the initial screen.

  By the user's selection, the system 28 control unit of the mobile phone MP displays a screen for setting the destination and starts accepting a destination designation operation by the pedestrian. At that time, the pedestrian inputs route search conditions such as a destination. In addition, the guidance start point outputs a positioning start command to the GPS positioning unit 26 by the system control unit 28 when acceptance of the destination designation operation is started by the pedestrian, and the latitude and longitude of the current position of the pedestrian is calculated. It is assumed that the current position information shown is acquired and the acquired current position information is set as a guidance start point. Note that the guidance start point may be separately designated by a pedestrian.

  Here, when the pedestrian performs a destination designation operation using the operation unit 25 and the designation of the destination is completed (step S1), the system control unit 28 ends acceptance of the destination designation operation, A route search request including the destination is transmitted to the server SV.

  When receiving the route search request transmitted from the mobile phone MP, the system control unit 13 of the server SV performs a route search according to the route search request (step S2). Specifically, the system control unit 13 searches for a route from the departure point to the destination indicated by the current position information and the destination information set in the route search request based on the map data. Then, the system control unit 13 of the server SV transmits guide route information from the departure place to the destination as a search result to the mobile phone MP.

  Next, the system control unit 28 of the mobile phone MP obtains the guidance route information searched by the server SV (step S3), and the environment type such as an underground road or a station premises is selected from the guidance route information. The type and classification type of the road data is extracted (step S4), and information on the extracted classification and classification type is transmitted to the system control unit 13 of the server SV, and is associated with the type and classification type of the road data. Request guidance text data.

  Next, the system control unit 13 of the server SV retrieves the guidance text data associated with the type or classification type of the road data (step S5). If the guidance text data exists as a result of the retrieval, the guidance text data is present. Data is transmitted to the mobile phone MP. Then, the system control unit 28 of the mobile phone MP starts guiding the pedestrian to the destination (step S6).

  The system control unit 28 of the mobile phone MP determines whether or not guidance text data has been received from the server SV (step S7). If this determination is affirmed, the process proceeds to step S8, and if not, the process proceeds to step S13, the map, the current position of the pedestrian, and the guidance route are displayed on the display screen 2 and the process is terminated.

  Next, in step S8, the system control unit 28 of the mobile phone MP sets the guidance text data as the guidance text data of the corresponding road data and manages it together with the road data for guiding to the destination.

  Next, the system control unit 28 of the mobile phone MP acquires the current position of the pedestrian using the GPS positioning unit 26, and specifies the current position of the pedestrian (step S9).

  Next, the latest road data set with guidance text data connected to the road data corresponding to the current position of the moving pedestrian is specified (step S10), and the current position of the pedestrian and the guidance text data are set. It is determined whether or not the distance from the stop immediately before reaching the most recent road data is equal to or less than a predetermined threshold (step S11). If this determination is affirmative, the process proceeds to step S12. On the other hand, if this judgment is denied, it will return to Step S9 and will specify the present position of a pedestrian in GPS positioning part 26 again, and will perform processing of Step S9-Step S11.

  Next, in step S12, the system control unit 28 of the mobile phone MP reads the guidance text data associated with the road data corresponding to the current position of the moving pedestrian, and flows to the lower part of the display screen 2, for example. Set to be displayed as a character string (Flash (registered trademark) ticker display).

  Finally, in step S13, the map, the current position of the pedestrian, the guidance route, and the guidance text data are displayed on the display screen, and the process ends.

  As described above, the communication navigation system S for pedestrians according to the present embodiment includes the map 3 around the current position of the pedestrian, the guide route 4 for guiding the pedestrian to the destination, and the display screen of the mobile phone MP. The current position of the pedestrian 5 is displayed on the display screen 2, and the pedestrian 5 can be accurately guided to the destination by such display. Further, guidance text 9 for accurately guiding the pedestrian 5 is displayed on the display screen of the mobile phone MP. By this guidance text 9, the pedestrian 5 will be guided accurately to the destination by following the guidance route 4 searched by the server SV without hesitation.

  In addition, this application is not limited to this embodiment, It can implement in a various form. For example, although walking is used as the pedestrian moving means of the present embodiment, bicycles, cars (including route buses, etc.), railroads, etc. may be used. Moreover, in the said embodiment, although route search is performed by server SV, you may memorize | store map data in mobile telephone MP, for example. In this case, the server SV is not essential due to the system configuration.

  In each of the above embodiments, the mobile phone is applied to the mobile terminal device. However, for example, another mobile terminal device such as a PDA (Personal Digital Assistant) may be applied.

  Moreover, the threshold value for displaying guidance text data can be set to 20 m, for example. For example, when a guidance text is displayed when passing through the station, the threshold is a position where the station enters the field of view from the pedestrian when the pedestrian is walking on the road connected to the station. The distance from the entrance to the station entrance is set as a threshold. When there are a plurality of roads connected to the station, the distance from the position where a pedestrian can visually recognize the station while any of the roads passes through the road is set as a threshold. In this way, when the guidance text is displayed on any road, it is possible to visually recognize the station regardless of which road the pedestrian is passing. Convenient.

It is a figure which shows an example of the map displayed by the communication navigation system for pedestrians concerning this embodiment. It is a figure which shows an example of the hardware constitutions of the communication navigation system for pedestrians concerning this embodiment. It is a block diagram which shows an example of schematic structure of the server SV which concerns on this embodiment. It is a figure which shows an example of a guidance text message. It is a figure which shows an example of the guidance route information produced | generated by the server. It is a block diagram which shows an example of schematic structure of mobile telephone MP which concerns on this embodiment. It is a figure which shows an example of the data which matched and matched the said guidance text data with search result information. It is a flowchart which shows the process example at the time of guiding a pedestrian to the destination.

Explanation of symbols

S Pedestrian Communication Navigation System SV Server MP Cellular Phone NW Network 4 Guide Route 9 Guide Text Data 11, 27 Storage Unit 26 GPS Positioning Unit 28 System Control Unit

Claims (8)

Previously stored route data are used to perform a search for the guidance route, using a pre Kikei path data according to the guidance route conditions input by the user to search for a route to a destination of the user, the search A navigation system for guiding the user by displaying a guidance route generated by connecting the route data based on a result by a portable terminal device,
Route data including attribute information indicating a route attribute is stored , guidance text data for guiding the user specified by the route attribute is included, and attribute information indicating the route attribute is included. Storage means for storing in association with the route data ;
Detecting means for detecting the current position of the user before the route data of one route reaches a connection point connected to other route data associated with the text data for guidance;
Informing means for informing the user of the guidance text data associated with the other route data after reaching the connection point before reaching the connection point;
Equipped with a,
The guidance text data is at least one of route data corresponding to a route in which the current position of the user cannot be detected, route data corresponding to a route in a building, and route data corresponding to a route on a different floor. Are associated,
It is determined whether or not the distance between the current position of the user detected by the detection means and the connection point immediately before reaching the route data associated with the guidance text data is equal to or less than a predetermined threshold. Further comprising a determination means for
The notification means notifies the user of the text data for guidance before reaching the connection point when the distance reaches a predetermined threshold or less as a result of the determination.
In the storage means, icon data for displaying an icon is stored in advance,
When the route data included in the guidance route corresponds to an indoor route, when the guidance route is displayed, the entrance and exit of the indoor route are displayed as icons, and the icons are connected by a straight line. A navigation system further comprising display means for performing the above-described operation. The notification means includes
The navigation system according to claim 1, wherein the guidance text data is displayed on a screen of the mobile terminal device. The navigation system according to claim 2 , wherein the guidance text data is displayed by a character string flowing on a screen. A server device included in the navigation system according to claim 1,
In the server device constituting the navigation system by being connected to the portable terminal device via communication means,
Navigation, wherein said route data was used to search for a route to a destination of the user, said plurality of path data to generate the guidance route is connected on the basis of the search results according to the guide route condition Server device included in the system. A portable terminal device included in the navigation system according to claim 1,
In the portable terminal device constituting the navigation system by being connected to the portable terminal device via communication means,
Detecting means for detecting the current position of the user before the route data of one reaches the connection point connected to the other route data associated with the text data for guidance ;
Informing means for informing the user of the guidance text data associated with the route data after reaching the connection point before reaching the connection point;
It is determined whether or not the distance between the current position of the user detected by the detection means and the connection point immediately before reaching the route data associated with the guidance text data is equal to or less than a predetermined threshold. And a judgment means for
The notification means notifies the user of the text data for guidance before reaching the connection point when the distance reaches a predetermined threshold or less as a result of the determination.
When the route data included in the guide route corresponds to an indoor route, when the guide route is displayed, the entrance and exit of the indoor route are displayed as icons stored in a storage unit, and the icon A portable terminal device included in a navigation system, further comprising display means for connecting and displaying each other with a straight line . A computer program for causing a computer to function as the server device according to claim 4 . A program for a portable terminal device that causes a computer to function as the portable terminal device according to claim 5 . And route data used to perform a search for a guide route, stores the route data including attribute information indicating attributes of the route, the text for the guide for guiding the user identified by the attribute of the path Data is stored in association with route data including attribute information indicating the attribute of the route , icon data for displaying an icon is further stored, and the text data for guidance is at least the user Is associated with any one of route data corresponding to a route whose current position cannot be detected, route data corresponding to a route in a building, and route data corresponding to a route on a different floor, and is input by the user. The route to the user's destination is searched using the plurality of route data according to the guide route condition, and the search result is based on the search result. An induction method by the navigation system the navigation route number of the route data is generated is connected to the display by the portable terminal device performs the induction of the user,
A detecting step for detecting the current position of the user before the route data of one route reaches a connection point connected to other route data associated with the text data for guidance ;
A notification step of notifying the user of the text data for guidance associated with the other route data after reaching the connection point before reaching the connection point;
It is determined whether the distance between the current position of the user detected by the detection step and the connection point immediately before reaching the route data associated with the guidance text data is equal to or less than a predetermined threshold value. Further comprising a determination step of
In the notification step, as a result of the determination, when the distance has reached a predetermined threshold or less, the notification text data is notified to the user before reaching the connection point,
When the route data included in the guidance route corresponds to an indoor route, when the guidance route is displayed, the entrance and exit of the indoor route are displayed as icons, and the icons are connected by a straight line. Display process to
A guidance method characterized by comprising:

Images