JP3394190B2 - Navigation support processing method, navigation support system, navigation support center device, navigation support terminal device, and program recording medium thereof - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a navigation support processing method, a navigation support system, a navigation support center device, a navigation support terminal device, and their program recording media for assisting navigation of moving to a destination.

[0002]

2. Description of the Related Art Navigation for moving a person to a destination is an unavoidable task in daily life. A person's sense of direction and good memory of directions greatly affect such navigation, and he / she often loses his way due to various situations.

Therefore, a device for assisting the navigation has been invented so far. All of these devices have a mechanism for providing information about directions as maps and voice as information for assisting navigation. There is a device that generates and outputs information about directions based on map information stored in a user's terminal. For example, there is a car navigation device described in Japanese Unexamined Patent Publication No. 10-105888 "Navigation device with voice guidance" that provides guidance based on the name of the road currently running and the place name in the traveling direction. In order to realize this, it is necessary to provide the map information in the device held by the user, to provide all the map information in the range used by the user, and to keep the information up to date. is there. Also, if the route information is a map, a device for displaying it is necessary.

On the other hand, there is an invention in which the information on the route is generated from the map information stored in the center and transmitted to the user's terminal. To achieve this, the amount of information must be reduced because the information is sent to the user's terminal. Therefore, a device for guiding a route by voice according to the distance from the starting point to the destination, the direction, the target object, etc. described in Japanese Patent Laid-Open No. 5-334373, or Japanese Patent Laid-Open No. 7-160982. An apparatus and the like for compressing the amount of information described in the publication "Command map transmission system" have been invented. However, in the case of voice, if all directions are given, the amount of information that can be recognized by the user will be exceeded, so storage means such as recording is required, and if the directions information is a map, a device for displaying it. is necessary.

Further, such route information must be understood and interpreted by the user, and if it cannot be understood, it becomes meaningless information.

[0006]

Therefore, it is possible to realize a device that assists useful navigation even by using a simple terminal that cannot be realized by a conventional device such as only providing route information by a map or voice. Is required.

[0007] The present invention has been made in view of the problems of the above-mentioned prior art, and by notifying the position information of a user who has the same destination and knows the position of the destination. It is an object to provide a device that assists navigation.

[0008]

A system for assisting navigation of a user according to the present invention includes a center device, a user terminal, an ID, a classification, a destination, a current position,
For users who do not know the destination position regarding the first means for acquiring user information such as identification information as a mark and registering it in the user management database, and the data registered by this first means. Then, regarding the second means for selecting the user who knows the destination position at the same destination and the user who knows the destination position selected by this second means, the user A third means for generating a language expression for guiding the current position of the map from the map database, and the guidance expression generated by the third means for the user terminal that does not know the destination position. Fourth means for outputting the expression.

Further, the user terminal is provided with means for notifying the center device of the user information such as ID, type, destination, current position, identification information as a mark, and the same destination from the center device. , Means for receiving a guide expression indicating the current position of the user who knows the destination position, and means for outputting the guide expression received from the center device.

Each of the above processing means can be realized by causing a computer of the center device or the user terminal to execute a predetermined program, and the programs for realizing these can be read by the computer. It can be stored in an appropriate recording medium such as a portable medium memory, a semiconductor memory, or a hard disk.

The type of user information means a user who knows the destination position, a user who does not know the destination position and wants to know it, and a destination position. Indicates the type of users who do.

The third means is to express the current position of the user who knows the destination position by a relative positional relationship from the current position of the user who does not know the destination position. It is possible to improve the efficiency of grasping the location information and help reduce the possibility of incorrect location information selection.

In addition, the user who knows the destination position is
By making it easy to recognize the expression that guides the current position, it is possible to increase the efficiency of grasping the position information by selecting it and to help reduce the possibility of incorrect position information selection. This recognizability is calculated from the recognition cost using the landmarks included in the expression and the positional relationship expression as parameters.

In the guide expression generation, when the distance from the current position of the user who does not know the destination position to the destination position is short, the guide expression of the current position of the user who knows the destination position is generated. Alternatively, the position guidance expression for the destination position may be directly generated and output.

The present invention provides a system for assisting navigation of a user who does not know the destination position by providing position information of users who have the same destination,
Since the linguistic information provides only the position information of the user who has the same destination and knows the position of the destination, the user has the effect of being able to use the service with a simple terminal.

Further, by expressing the current position of the user who knows the destination position by the relative positional relationship from the current position of the user who does not know the destination position, the position information can be grasped. It has the effect of increasing efficiency and reducing the possibility of incorrect location information selection.

In addition, the user who knows the destination position is
By selecting the expression that guides the current position so that it can be easily recognized, it has the effect of increasing the efficiency of grasping the position information and reducing the possibility of incorrect position information selection.

The present invention has the effect of assisting the navigation to the destination position by following the user who knows the destination position, but in particular, the destination position is close. In this case, by directly generating the position guidance expression for the destination position, it is possible to eliminate the waste of guidance.

Further, the uniform processing by the computer releases the individual difference in human work, so that the quality can be kept constant.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing a main configuration of a navigation support system according to the present invention. This system includes a center device 1 and a plurality of user terminals 2, 2 ', which can communicate with the center device 1 by some communication means.
, And the center device 1 includes a user information collection processing unit 110, an introduction target selection processing unit 120, a position guidance expression generation processing unit 130, and an output control processing unit 140.
Further, the user terminal 2 (same for 2 ′) is composed of a user information registration processing unit 210, a guidance expression reception processing unit 220, and a guidance expression output processing unit 230. Although FIG. 1 shows an example in which the center device 1 is configured by one device, it may be configured by a plurality of devices connected via a network.

The user information collection processing unit 110 acquires user information from the user terminal 2 and registers it in the user management database 101. Referral selection processing unit 1
20 receives the user management database 101,
If there is a user who does not know the destination position and wants to know it, perform processing to select an appropriate user who knows the destination position. The position guidance expression generation processing unit 130, based on the processing result of the introduction target selection processing unit 120, the map database 102, the road network database 103,
The spatial object network database 104 is received and processing for generating a guidance expression is performed. The output control processing unit 140 performs control to output the processing result based on the processing results of the introduction target selection processing unit 120 and the position guidance expression generation processing unit 130.

The user management database 101 is
It is a database including data for managing user information. Further, the map database 102 is a database including data of coordinate point sequences of figures existing in the map, and attributes attached to the figures. Here, the assigned attribute is composed of resident information such as name, address, telephone number, and industry classification. The road network database 103 is a database that includes links and node data that represents a road network. Nodes in the road network are, for example, intersections,
A link is like a road between one intersection and the next. The spatial object network database 104 is a database representing a network between adjacent spatial objects and includes positional relationship information of spatial objects. The spatial object means an object displayed on the map and corresponding to each figure such as a building.

Regarding the processing contents of each processing unit in the center device 1, the user information collection processing unit 110 is shown in FIG. 2, the introduction target selection processing unit 120 is shown in FIG. 3, and the position guidance expression generation processing unit 130 is shown in FIGS. 6, the output control processing unit 140 is shown in FIG.
Shown in.

The user information collection processing section 110 performs the processing shown in FIG. User information (ID, type, destination, current position, identification information serving as a mark) is acquired from the user terminal 2 (step S1 in FIG. 2). If the type is complete (step S2), the user information already registered in the user management database 101 is deleted (step S4). Further, when the type is a user who knows the destination position or a user who does not know the destination position and wants to know it, the user information can be registered and updated in the user management database 101. It is performed (step S3). Here, at the time of registration and update, if the destination position and the current position are the same, registration is not performed. Alternatively, the registered user information is deleted. The current position information is, for example, P
It may be obtained from an external database, such as obtained from the database of the HS base station.

In the introduction target selection processing section 120, processing as shown in FIG. 3 is performed. In this process, a guidance output flag provided for each user is used. The guidance output flag is ON when the guidance expression is output or when it is not necessary to output the guidance expression, and is OFF when the guidance expression is not output or when the guidance expression needs to be re-output.
Is.

First, the guide output flag indicating "whether or not the guide expression is output?" Is turned on, and the guide output flag of the user who has passed a certain time is turned off (see FIG. 3). Step S10). Next, when the guidance output flag is OFF and the type does not know the destination position, the information of the user (UK) who wants to be taught is acquired (step S11). The distance between the current position of this UK and the destination position is calculated, and if the distance is less than or equal to a certain distance α (step S12), the destination position is set as the introduction target, not another user. For direct guidance, the position guidance expression generation processing unit 130 is requested to perform processing to generate a position guidance expression for the target position (step S13).

Otherwise, the user (Ki: i) who has the same destination as the UK and knows the destination position.
Is searched (step S).
14). If there is no corresponding user, the process ends. For this Ki, the position guidance expression generation processing unit 130
At, an expression for guiding the current position is generated, and Ki having the highest recognition cost is selected as an introduction target (step S15). here,
The recognition cost represents the easiness of recognizing the Ki position, and is calculated by the position guidance expression generation processing unit 130. In this way, when the guide expression is generated, the guide output flag of the UK is turned on (step S1
6), the processing by the output control processing unit 140 is performed.

In the position guidance expression generation processing unit 130, FIG.
Processing as shown in is performed. The landmarks closest to the current positions of UK and Ki (Ot, respectively,
Og) is selected. Further, in the case of guidance of the destination position, Og becomes the destination (steps S20 and S21 of FIG. 4).

On the other hand, according to the NW extraction routine,
A road network route and a spatial object network route are selected (step S2).
2). The processing contents of this NW extraction routine are shown in FIG. In the NW extraction routine, the landmarks Ot and Og closest to the current positions of UK and Ki are input (step S30 in FIG. 5), and the types of Ot and Og are determined (step S31). If Ot and Og are nodes, Ot and Og themselves are set to Nt and Ng (step S3
2), if Ot and Og are links, the node close to Og of Ot is Nt, and the node close to Ot of Og is Ng (step S33). In other cases, the nodes near Ot are near Nt and Og. Let the node be Ng (step S3)
4).

Next, a road network route is searched from Nt to Ng, the nodes selected by the search are N1 ... Nm, and the links between Ni and Ni + 1 are Li (i =
, ..., M-1) (step S35). Also, O
From t to Og, a spatial object network path is searched, and the spatial objects selected by the search are O1 ... On, and the links between Oi and Oi + 1 are vi (i
= 1, ..., N-1) (step S36).

On the other hand, the spatial word selecting routine selects the spatial word expressing the relative positional relationship (step S23 in FIG. 4). The processing contents of the space word selection routine are shown in FIG. In the space word selection routine, the vi of the target landmark is classified into 5 patterns based on the moving direction based on Oi and Li (step S40 of FIG. 6), and the language of the combination is classified. A selection is made.

An example of this classification is shown in FIG. Based on the traveling direction represented by Li, vi is a pattern P shown in FIG. 8 due to the relationship between vi and other spatial objects.
1 to P5, in this case, for example, (A) P1
It is converted to "next to", (B) P2 "opposite", (C) P3 "crossing the road", (D) P4 "alongside", (E) P5 "soba", and so on. Based on this classification, processing is performed on a combination of a plurality of patterns for the selected vi. For example, as shown in FIG. 9, in the case of two combinations, (E) "next" + "next" → "2 houses ahead" or (F) "next" + "opposite" → "diagonal front" Is converted to. Similarly, calculating multiple combinations,
Perform the process of selecting a space word. If the language conversion by the selection of the space word is successful (step S41), the space word is generated (step S42). If such a conversion cannot be performed, the spatial word generation fails (step S43).

Thus, when the space word is successfully selected (step S24 in FIG. 4), a landmark other than Og that can be represented by the selected space word is searched for Ot, and The number (similarity) is calculated (step S25). For example, if the space word is selected as “two houses ahead”, it means that a landmark that is “two houses ahead” is searched from all directions and the number of landmarks is set as the similarity. Further, the priority of the selected Og is also calculated, and this priority expresses the intelligibility of the landmark, and is calculated by the parameter by the attribute and the parameter by the shape (step S2).
6). Here, the parameter according to this attribute is set to a high value in the case of a public facility, and the value is set to a low value in the case of a personal facility, and the parameter by the shape is large
A round value has a high value, and a small square value has a low value. The recognition cost for the Ki is calculated based on the similarity and the priority (step S27). The position guidance expression is shaped based on the Ot, Og, and the selected space word (step S2).
8).

The output control processing unit 140 performs the processing shown in FIG. Information on the position guidance expression to be introduced is output to the user terminal of the selected UK (step S50 in FIG. 7). At this time, depending on the terminal, for example, conversion to a PB signal for pager, voice synthesis for a mobile phone, or the like may be performed, and the converted data may be output.

FIG. 10 is a processing flowchart of the user terminal.

The user terminal 2 shown in FIG. 1 performs the processing shown in FIG. First, I which identifies the terminal
D, type such as knowing the destination position or notifying the destination position and requesting to know it, and inputting identification information as a mark (step S60). The identification information that serves as a mark may be any information as long as it can identify the user. For example, the appearance information such as the user's clothes and the information such as the vehicle number and color if the user is in the car. is there. It is sufficient for the user who knows the destination position to input the identification information as a mark.

If the processing becomes unnecessary according to the user's instruction and the processing is not continued, the process proceeds to step S68 (step S68).
61). Next, the current position is input (step S62).
User information including the input ID, type, destination, current position, and identification information is transmitted to the center device 1 and registered (step S63). Here, the current position may be directly input by the user from the user terminal 2, for example, GPS (Global Posi
The position may be detected by an ionization system) and automatically input. Further, the current position information may be indirectly transmitted to the center device 1 via the PHS base station. Furthermore, it is conceivable that the user inputs the type, destination, current position, identification information and the like by voice, and the center device 1 side recognizes the user information by voice recognition.
In the present invention, the user information input method and input means do not matter.

If there is a notification from the center device 1 that the current position is the destination position and the registered user information is deleted, the process is terminated (step S64). Next, in the case of the user terminal 2 who does not know the destination position and wants to know it, the user waits for the reception of the guidance expression from the center device 1, and if the guidance expression is received (step S65), the guidance expression is speakered. , Output to the output device of the user terminal 2, such as an earphone or a display (step S66). With this guidance expression, the user can search for another user who knows the destination position of the guidance target, or the destination if it is near the destination position, and if the user can reach the destination position. For example, the user terminal 2 is instructed to end the search for the guidance target. User terminal 2
When recognizing the instruction to end the search for the guidance target (step S67), the type = completion, the user information is transmitted and registered to the center device 1 (step S68), and the process ends.

11 to 13 show message sequence charts between the center device 1 and the user terminals 2 and 2 '. Since the user terminal 2 does not know the destination position, the user's terminal that the user wants to know, and the user terminal 2'is the user's terminal that knows the destination position.

In particular, FIG. 11 shows a message sequence until the user terminal 2 who does not know the destination position wants to know the position of the user who knows the destination position and knows the position. Is shown. ACK in the figure
Is an acknowledge response indicating that the message has been received. Since the destination is close to the current position, the same is true when the destination position is directly guided. The content of the guidance message from the center device 1 to the user terminal 2 at that time is as follows.
It is a linguistic expression that guides the destination position.

FIG. 12 shows a message sequence in the case where the user terminal 2 who does not know the destination position wants to know the position of the user who knows the destination position, and the position is unknown. Is shown. The user terminal 2 receives the guidance message, searches for the guidance target,
After that, when the completion notification of the type = completion is not issued, the center device 1 turns off the guidance output flag after a certain period of time, and sends the guidance message to the user terminal 2 again. The user of the worker terminal 2 can repeat the search for the guidance target.

FIG. 13 shows a message sequence when there is no other user who knows the destination position that the user of the user terminal 2 wants to know. in this case,
Guidance will be delayed until a user who knows the destination location appears.

As described above, according to the present invention, by providing the map data, the road network data, and the spatial object network data, the position information of the user having the same destination and knowing the destination position is provided. You will be able to.

[0045]

EXAMPLE FIG. 14, FIG. 15 and FIG. 16 are diagrams for explaining the above-mentioned processing procedure according to actual data.
It is assumed that the user information collection processing unit 110 has acquired the following user information.

[ID, type, destination, current position, identification information as a mark] 050-11-123456, UK, ○ bank, x1, y1, black suit 050-12-123456, K, ○ bank, x2, y2, red suit 050-13-123456, K, ○ bank, x3, y3, black coat 050-14-123456, completed, ○ post office, x4, y4, brown hat 050-15-123456, K, ○ post office , X5, y5, silver suitcase 050-16-123456, K, ○ bank, x6, y6, black pouch (K: user who knows the destination position) (UK: I don't know the destination position, so tell me Here, ID = 050-14-123456 is the ID from the previous process.
= 050-15-123456 is introduced as an introduction target and is the type of completion, and the registered user information is deleted from the user management database 101. Further, other information is registered and updated in the user management database 101.

In the introduction target selection processing unit 120, since the guidance output flag is OFF and the type does not know the destination position, the information of the user who wants to be taught is searched. In this case, ID = 050- User information of 11-123456 is acquired. For this ID = 050-11-123456, the distance between the current position and the destination position is calculated, and if the distance is not less than a certain distance, the user has the same destination and knows the destination position. The person is searched. Here, ID =
050-12-123456, ID = 050-13-123456, ID = 050-16
-123456 user information is acquired. On the other hand, the position guidance expression is generated.

The contents of the processing of the position guidance expression generation processing unit 130 are shown in FIG. As shown in FIG. 14, the UK (ID
= 050-11-123456), K1 (ID = 050-12-123456),
K2 (ID = 050-13-123456), K3 (ID = 050-16-1
23456), the closest landmarks (Ot, Og1, Og2, and Og3, respectively) are selected. Here, U indicated by x
For the current positions of K, K1, K2 and K3, Ot = “○
"Ramen", Og1 = "convenience store", Og2 = "x department store", Og3 = "△ hot spring" are selected.

On the other hand, a spatial word is selected. K1 (ID = 050-
12-123456) is shown in FIG. Og1 =
A road network route and a space object network route are calculated for the "convenience store". The results are schematically shown in the lower part of FIG. Using this data, the space word = “oblique front” is selected here by the space word selection routine. On the other hand, the calculated similarity and Og1 = “convenience store”
The recognition cost for K1 (ID = 050-12-123456) is calculated according to the priority of. As a result, the guide expression is
"The person in a red suit in front of a convenience store in the diagonally front of the ramen in front of me."

The processing for K2 (ID = 050-13-123456) is shown in FIG. For Og2 = "× department store",
Road network routes and spatial object network routes are calculated. The results are schematically shown in the lower part of FIG. Using this data,
Here, the space word = “navi” is selected by the space word selection routine. On the other hand, the calculated similarity,
And due to the priority of Og2 = “× department store”, K2
The cognitive cost for (ID = 050-13-123456) is calculated. As a result, the guide expression becomes "a person in a black coat in front of ○ Ramen's side of the line × department store in front of you". Similarly, K3 (ID = 050-16-123456) is also processed, but since the positions are far apart,
Space word selection fails.

As described above, among the generated position guidance expressions, Ki having the highest recognition cost (easy to recognize) is selected as an introduction target. Here, K
1 (ID = 050-12-123456) is selected and its UK (I
D = 050-11-123456) and the output control processing unit 140 performs the processing.

In the output control processing unit 140, UK (ID =
050-11-123456), the location guidance expression “a person in a red suit in front of a convenience store diagonally in front of the Ramen” is output to the terminal of the introduction target.

Although the present invention has been specifically described based on the embodiments, it is needless to say that the present invention is not limited to the above embodiments and various modifications can be made without departing from the scope of the invention. . For example, the user can use the device of the present invention regardless of the situation such as riding in a car or riding a motorcycle.

For example, in the conventional car navigation system, instead of the route to the destination, instead of the route to the destination, it would be long if the route from the current position to the destination is guided.
It is possible to simplify the route guidance by knowing the route to the destination and guiding the other vehicle closest to the own vehicle as the leading role. Once you can find the car that will lead you, you can easily drive to your destination by following the car that leads you.

[0055]

Since the present invention is configured as described above, it has the following effects.

The position information of a user who has the same destination and knows the position of the destination can be automatically provided, and a significant reduction in manpower and cost can be expected. In addition, since the computer performs uniform processing, there is an effect that there is no individual difference among a plurality of people and a uniform quality of information to be provided can be maintained.

Further, since the linguistic information provides only the positional information of the user who has the same destination and knows the destination, there is an effect that it can be used with a simple terminal. Furthermore, by expressing the current position of the user who knows the destination position by the relative positional relationship from the current position of the user who does not know the destination position, the efficiency of grasping the position information can be improved, This has the effect of reducing the possibility of incorrect location information selection.

By selecting the user who knows the destination position by the easiness of recognizing the expression for guiding the current position, the efficiency of grasping the position information is improved, and incorrect position information selection is possible. There is an effect that can reduce the sex.

[Brief description of drawings]

FIG. 1 is a block diagram showing a main configuration of a navigation support system according to the present invention.

FIG. 2 is a processing flowchart of a user information collection processing section shown in FIG.

3 is a processing flowchart of an introduction target selection processing unit shown in FIG.

4 is a processing flowchart of a position guidance expression generation processing unit shown in FIG.

FIG. 5 is a processing flowchart of an NW extraction routine called by a position guidance expression generation processing unit.

FIG. 6 is a processing flowchart of a spatial word selection routine called by a position guidance expression generation processing unit.

FIG. 7 is a processing flowchart of an output control processing unit shown in FIG.

FIG. 8 is a diagram showing an example of pattern classification of vectors representing connections of spatial objects.

9 is a diagram showing an example of a combination of patterns shown in FIG.

FIG. 10 is a processing flowchart of a user terminal.

FIG. 11 is a message sequence chart.

FIG. 12 is a message sequence chart.

FIG. 13 is a message sequence chart.

FIG. 14 is a diagram for explaining an example of a result of actual processing.

FIG. 15 is a diagram for explaining an example of a result of actual processing.

FIG. 16 is a diagram for explaining an example of a result of actual processing.

[Explanation of symbols]

1 Center device 101 user management database 102 map database 103 Road network database 104 Spatial Object Network Database 110 User Information Collection Processing Department 120 Introduction target selection processing unit 130 Location guidance expression generation processing unit 140 Output control processing unit 2, 2'User terminal 210 User Information Registration Processing Unit 220 Guide expression reception processing unit 230 Guide expression output processing unit

Front page continuation (51) Int.Cl. ⁷ identification code FI H04M 3/42 G06F 15/40 370C (58) Fields investigated (Int.Cl. ⁷ , DB name) G08G 1/0969 G01C 21/00 G06F 13 / 00 354 G06F 17/30 G09B 29/10 H04M 3/42

Claims (9)

(57) [Claims] 1. A navigation assistance processing method for assisting navigation of a user in a system having a plurality of user terminals and a center device capable of communicating with these user terminals, wherein the center device comprises , Registering user information including user's destination, current position information and information on whether or not the destination position is acquired from the user terminal in the user management database, and regarding the registered data ， For users who do not know the destination position, select the user who knows the destination position in the same destination, and regarding the user who knows the selected destination position, the current state of the user A linguistic expression for guiding the position is generated from a database having map information, and the generated guiding expression is guided to a user terminal that does not know the destination position. A navigation support processing method, wherein an expression is output, and the user terminal receives the guidance expression output from the center device and outputs it to the user. 2. The navigation support processing method according to claim 1, wherein the current position of the user who knows the destination position is represented by a relative positional relationship from the current position of the user who does not know the destination position. A navigation support processing method comprising: 3. The navigation support processing method according to claim 1, wherein the user who knows the destination position is selected according to the easiness of recognition of the expression for guiding the current position. Processing method. 4. The navigation support processing method according to claim 1, wherein a user who knows the destination position knows the destination position when the distance from the current position of the user who does not know the destination position to the destination position is short. A navigation assistance processing method characterized by generating and outputting a position guidance expression for a destination position instead of the guidance expression of the current position. 5. A navigation support system having a plurality of user terminals and a center device capable of communicating with these user terminals, for assisting user navigation, the center device comprising: From the user terminal,
A means for acquiring the user information including the user's destination, information on the current position and information on whether or not the destination position is known, and registering the user information in the user management database, and the destination position with respect to the registered data. Means for selecting a user who knows the destination position in the same destination for a user who does not know the current destination position of the user who knows the selected destination position Means for generating a linguistic expression for guiding the user from a database having map information, and means for outputting the guide expression to a user terminal that does not know the destination position with respect to the generated guide expression, The user terminal notifies the center device of user information including a destination of the user, information on the current position, and information on whether or not the destination position is known; And a means for receiving a guidance expression indicating the current position of a user who knows the destination position at the same destination, and a means for outputting the guidance expression received from the center device. Navigation support system. 6. A navigation support center device for assisting navigation of a user by communicating with a plurality of user terminals, the destination of the user, the current position of the user from the user terminal. Information and information about whether or not the user knows the destination position, and a means for registering the user information in the user management database and a user who does not know the destination position for the registered data. , A means for selecting a user who knows the destination position at the same destination, and a language expression for guiding the user's current position with respect to the user who knows the selected destination position. , Means for generating from a database having map information, and the generated guide expression,
A navigation support center device comprising: a user terminal that does not know the destination position; and means for outputting the guidance expression. 7. A navigation assisting terminal device for assisting navigation of a user by communicating with a center device capable of communicating with a plurality of user terminals, wherein: Means for notifying the user information including the destination and the current position information and whether or not the destination position is known, and the present of the user who knows the destination position at the same destination from the center device. A navigation support terminal device comprising: a means for receiving a guidance expression indicating a position; and a means for outputting the guidance expression received from the center device. 8. A recording medium in which a program used by a navigation support center device for assisting navigation of a user by communicating with a plurality of user terminals is recorded. The process of acquiring user information including the user's destination, current position information, and information about whether or not the destination position is known and registering it in the user management database, and the destination position with respect to the registered data The process of selecting a user who knows the destination position at the same destination with respect to a user who does not know the current destination position of the user who knows the selected destination position. A process for generating a language expression for guiding a user from a database having map information, and a user terminal that does not know the destination position with respect to the generated guide expression. A program recording medium for a navigation support center device, characterized in that a program for causing a computer to execute the process of outputting the guidance expression is recorded. 9. A recording medium in which a program used by a navigation support terminal device for assisting navigation of a user by communicating with a center device capable of communicating with a plurality of user terminals is recorded. A process of notifying the center device of user information including the destination of the user, information on the current position, and information on whether the destination position is known, and the same destination from the center device,
A program for causing a computer to execute a process of receiving a guidance expression indicating a current position of a user who knows the destination position and a process of outputting the guidance expression received from the center device is recorded. Program recording medium for navigation support terminal device.