JP2001304874A - Mobile unit constituting server communication type navigation system, sever, medium stored with destination information database, and medium stored with destination information retrieval program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a server communication type navigation system capable of utilizing the latest facility database and the like as economically as possible. SOLUTION: A server is mounted with a facility database and a destination retrieval index, these having the same structures as those of a mobile unit, and the addresses of web pages corresponding to these are put to linkage. First, a local database of the mobile unit is retrieved. If the need arises as a result of the retrieval, the database of the server is retrieved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile device and a server device constituting a server communication type navigation system, a medium recording a destination information database and a medium recording a destination information program, and more particularly to a mobile device. The present invention relates to a mobile device, a server device, and the like of a server communication type navigation system in which a device uses information of a server device to set a destination.

[0002]

2. Description of the Related Art A navigation system guides a moving object such as a person or a vehicle along an appropriate route from a current position to a destination. Conventional navigation system is CDROM
And a database stored on a DVD. This database stores a list of destination facilities. The destination facility can be searched without difficulty by selecting an easy-to-understand menu. Also, advertisement information and the like corresponding to the destination are stored.

FIG. 13 shows a menu structure for searching for a destination facility. The menu configuration (menu hierarchical structure) 51 for searching for the facility data 54 is as follows. The menu structure until reaching the facility data 54 starts with selecting a genre search, a telephone number (TEL) search, or a Japanese syllabary search. The genre search is a search method in which target facility data is reached by selecting a genre (hotel, station, prefecture where the facility is located, along a railway line, etc.) to which the facility belongs for each facility data.
The TEL search is a method of searching for a facility having a corresponding telephone number by inputting all or a part of the telephone number of the facility. The Japanese syllabary search is a search method that reaches the corresponding facility data by inputting all or part of the kana characters forming the facility name.

[0004] When the menu structure 51 descends in order to the lower layer, the menu that has been passed up to that time becomes an AND search condition, and predetermined facility data 54 can be allocated via the data link 52. Many facility data 54 are managed in the facility data database 53.

FIG. 14 is a structural diagram of facility data. Each facility data includes facility names such as Tokyo Disneyland,
The address where the facility is located is associated with the telephone number of the facility. Also, different expressions are assigned as search keywords even for the same type of search item so that facility data can be easily searched. Further, plane coordinates (XY coordinates) of the facility on the ground are associated with each facility data (not shown).

[0006]

However, the above conventional example has the following problems. First, the database of facility data stored in CDROM or DVDROM is fixed. Even with the continuation of actual facilities or changes in telephone numbers over time, the database could not be updated, and it was uneconomical to endure old data or purchase a new CDROM or the like. The same was true for advertising information.

On the other hand, it is conceivable that the navigation system is a client-server system by wireless communication and a necessary database is managed on the server side. However, in order to keep the server-side facility database up-to-date at all times, such human labor is required and there is a problem that labor costs increase.

[0008] Further, when a database required for navigation is stored in a server, a client mounted on a mobile body must always connect to the server, and communication costs are uneconomical. In addition, there is a case where it takes a relatively long time until a response of the search result is received from the server, and lacks quickness.

[0009]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a server communication type navigation system which can solve the inconvenience of the conventional example and can use the latest facility database as economically as possible.

[0010]

According to a first aspect of the present invention, there is provided an input means for inputting selection information of a destination, and a database storing location information of the destination. I have. The information processing apparatus further includes a control unit that, when the position information of the destination corresponding to the selection information input from the input unit cannot be found in the database, obtains the position information of the destination corresponding to the selection information from an external server device. The route to the destination is guided based on the acquired location information of the destination.

The destination selection information includes designation information of a menu for selecting a destination and information of a number and a character string for specifying the destination. The position information of the destination is, for example, plane coordinates (XY coordinates) on the ground. The same applies to the following claims.

[0012] The invention according to claim 2 includes input means for inputting selection information of a destination, and a database storing position information of the destination. Further, when the location information of the destination corresponding to the selection information input from the input means can be found in the database, the control means for requesting the external server device to transmit the information on the destination, and the destination information received from the server device. Display means for displaying information about the ground. Then, a configuration is adopted in which a route to the destination is guided based on the location information of the destination.

The information on the destination is, for example, display data of a Web page that provides information on the destination, the URL of the Web page, and the like. The same applies to the following claims.

According to the third aspect of the present invention, a database in which keywords for specifying the destination are stored in advance, and an address of a Web page including the keywords for specifying the destination are searched from the Internet, associated with the keywords, and stored in the storage means. Information processing means. And
The configuration is such that a keyword specifying a destination is received from an external mobile device, and display information of a Web address associated with the keyword or a Web page indicated by the Web address is returned.

The keyword for specifying the destination is, for example,
The facility name, address, telephone number, etc. of the destination. The same applies to the following claims.

According to a fourth aspect of the present invention, there is provided a We having the same structure as a destination search menu structure stored in a mobile device.
A computer-readable medium having a b-search index and recording a destination information search database in which an address of a web page including information corresponding to each web search index is associated with the web search index.

The invention according to claim 5 is provided with the same search keyword as the search keyword of the facility stored in the mobile device, and specifies the address of the Web page including the search keyword of each facility by specifying the facility. Is a computer-readable medium recording a destination information search database associated with.

The information for specifying a facility is the address, name, telephone number, etc. of the facility. The same applies to the following claims.

According to a sixth aspect of the present invention, there is provided a process for retrieving the location information of a destination from a database based on the destination selection information input from the input means. This is a medium in which a destination information search program for causing a computer to execute a process of obtaining a position information of a destination corresponding to the selected information by an external server device when the database cannot be found in the database is recorded.

According to a seventh aspect of the present invention, there is provided a process for retrieving the location information of a destination from a database based on the destination selection information input from the input means, wherein the location information of the destination corresponding to the search result is This medium is a medium in which a destination information search program for causing a computer to execute a process of requesting an external server device to transmit information on the destination when the information is found in the database is provided.

According to the invention described in claim 8, in the mobile device according to claim 1, the control means, when the position information of the destination corresponding to the selection information input from the input means can be found in the database, to the external device. A destination-related information request function for requesting the server device to transmit information on the destination. The information processing apparatus further includes display means for displaying information on the destination received from the server device. Then, a configuration is adopted in which a route to the destination is guided based on the location information of the destination. This aims to achieve the above-mentioned object.

According to the first, sixth or eighth aspect of the present invention, when the location information of the destination cannot be found in the local database of the mobile device, the mobile device is connected to the server device. Communication costs can be reduced in comparison. In addition, it is possible to supply infinite information of Web pages from the server device, and the freshness of the information is higher than that of the fixed destination information such as the conventional CDROM, and the information is excellent in expansion. I have. Also, often CDR
There is no need to purchase a medium such as OM, and the cost is excellent.

In the invention according to claim 2, 3, 7 or 8,
Before or during the process of traveling to a destination, information about the destination can be obtained from a Web page.
Compared to fixed information such as conventional CDROM,
It is useful because it has a high freshness and can obtain a wide range of information. In addition, the related information is automatically specified and distributed in the process of setting the destination. Also, often CDRO
It is economical because there is no need to purchase media such as M.

According to the fourth and fifth aspects of the present invention, the index structure or the keyword structure of the information retrieval is configured the same as that of the mobile device, and the address of the Web page is linked to this and incorporated in the server device. A search keyword input for performing a local search on a mobile device can be used as a search keyword on the server device as it is, and information of a Web page with high freshness and excellent expandability is extracted as a search result. Becomes possible.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below.

[System Configuration]

FIG. 1 is an overall configuration diagram of a server communication type navigation system according to the present invention. The car navigation device (car navigation) 10 mounted on the vehicle 10 includes:
It is connected to a wireless communication device 10a such as a mobile phone or a PHS. The base station 3 of the wireless telephone network communicating with the wireless communication device 10a
0 is connected to the telephone network 40.

On the other hand, the dedicated server 20 for communicating with the car navigation system 10 is connected to a telephone network 40 via a communication device 20a such as a modem.
, And various Internet information (Web pages) 50 can be accessed via an Internet line (dedicated line).

[Configuration of car navigation system]

FIG. 2 is a configuration diagram of the car navigation system 10. The control means 11 includes an input means 12, a display means 13, a GPS
The receiver 14 and the storage unit 15 are provided together.

The control means 11 realizes a function as a car navigation by the program processing of the CPU. The control means 11 has an interface for communicating with peripheral devices. The input unit 11 is a remote controller capable of selecting a search menu and inputting characters and numerical values by infrared communication with the control unit 11. The display unit 13 is a liquid crystal display, a head-up display, or the like that displays display data configured in the video RAM by the control unit 11. The GPS receiver 14 controls the vehicle 100 based on signals from GPS satellites.
Is detected and input to the control means 11. Storage means 1
Reference numeral 5 is composed of a RAM, a ROM, a CDROM, and the like, and stores a search menu structure 51 described in the conventional example, a facility database 53, and these data links 52. The storage unit 15 also stores other databases required for the car navigation function (not shown).

[Configuration of Dedicated Server]

Next, FIG. 3 is a configuration diagram of the dedicated server 20. The information processing means 21 is provided with a communication device 20 b connected to the Internet line and a storage means 22. Communication means 20b to the Internet line is DSU
Built-in router. The information processing means 21 executes communication with the car navigation system 10 and searches for information in the storage means 22 by program processing of the CPU. The storage means 22 stores R
It is composed of an AM, ROM, HDD and the like. The storage unit 22 stores a Web search index structure 23 having the same structure as the search menu structure 51 of the car navigation system 10. This Web search index structure 23 is
The data link 27 is linked to the Web address database 24. The Web address database 24 stores the URLs of many Web pages. The Web address database 24 is linked to a facility database 25 via a data link 28. The facility database 25 manages the same facility data as the facility database stored in the car navigation system 10. The Web address database 24 is linked to a coordinate database 26 via a data link 29. The coordinate database 26 stores the ground coordinates (XY coordinates) of the facility introduced on the Web page indicated by the Web address on the ground.

Here, the Web search index structure 2
FIG. 4 shows a link state between the Web server 3 and the Web address database 24. As already described, the structure of the Web index structure 23 is the same as the search menu structure 51 (FIG. 13) stored in the car navigation system 10. When the hierarchical structure of the Web search index structure 23 descends to the lower layer, the search condition finally becomes the AND search condition of the index that has been passed so far, and the Web page storing information satisfying the AND search condition. The address (URL) is selected from the Web address database 24 and linked.

For example, the Web address linked to the end of "Aichi" of "Hotel" in the genre search is the address of a Web page including the character strings of "Hotel" and "Aichi". Since many Web pages including the same character string exist on the Internet, a pair of Web addresses may be connected to the end of the Web search index structure 23.

A coordinate database 26 is connected to the Web address database 24. The Web page indicated by the Web address may include a detailed address of the facility introduced therein, and the coordinates in the coordinate database 29 indicate the ground plane coordinates corresponding to the detailed address in the Web page. Link to an address.

Next, FIG. 5 shows the facility database 25 and W
The state of link with the eb address database 24 is shown. The facility database 25 is the same as the information in the facility database 53 stored in the car navigation system 10, and each facility data has information on the facility name, address, and telephone number. In addition, each facility data has a plurality of search keywords in which the expression form of the information is different (FIG. 1).
4). Here, the web address linked to each facility data is a web page of a web page including information on the facility (facility name, address, telephone number) as a character string.
b address.

[Search processing in car navigation system]

Next, the procedure by which the car navigation system 10 obtains the route guidance destination will be described with reference to the flowcharts of FIGS. This procedure is realized by the CPU of the car navigation system 10 through program processing.

The user of the car navigation system 10 selects the search menu 51 displayed on the display means 13 (S1). The selection is made by the input means 12.

First, a search method is specified (S2). That is, the user selects the Japanese syllabary search, the telephone number search, or the genre search in the search menu structure 51.

Next, search conditions are input (S3). That is, in the case of the Japanese syllabary search, all or part of the characters in front of the Japanese syllabary constituting the facility name are input. In the case of a telephone number search, the user inputs all or part of the telephone number. If it is a genre search, specify the genre.

The control means 11 searches the facility database 53 for facility data linked to the input search condition (S4, S5).

If there is such data, the facility name, telephone number, address, etc. of the facility data are set as keywords for communication search (S6). On the other hand, if there is no corresponding data, the search condition input in S3 is set as a keyword for communication search (S3).
7).

Then, the control means 11 asks the user whether or not to perform a communication search (S8). This inquiry
This is performed by the display unit 13. The user inputs a request for a communication search from the input unit 12.

Proceeding to FIG. 7, if the user's answer does not desire the communication search, the search is terminated (S11). If the facility data is searched in S5, the route search and route guidance from the current location to the destination are started with the facility as the destination.

On the other hand, if the answer of the user is to request a communication search, the keyword of the communication search set in S6 and S7 is transmitted to the dedicated server 20 (S12). Transmission is communication device 1
0a, the telephone network 40, and the server-side communication device 20a.

The dedicated server 20 searches for the existence of a Web address corresponding to a keyword for communication search. If there is, the Web address or the display data of the Web page indicated by the Web address is returned to the car navigation system 10. The processing on the server side will be described later in detail.

If the search result in the dedicated server 20 indicates that the corresponding data is present, the control means 11 transmits the list of the Web addresses or the display data of the Web page indicated by the Web address to the dedicated server 20. And displays it on the display means 13 (S15).
When a plurality of Web addresses are searched in the search of the dedicated server 20, a list of searched Web addresses is first displayed on the display unit 13, and one of them is selected by the user. The selection is made from the input means 12. Then, the information of the selected Web address is stored in the dedicated server 2.
0 and sent back by the dedicated server 20
The display data of the Web page indicated by the address is received, and the Web page is displayed on the display unit 13. On the other hand, if the Web address searched by the dedicated server is reduced to one from the beginning, the dedicated server 20
The display data of the Web page indicated by the address is transmitted to the car navigation system 10, and the control unit 11 causes the display unit 13 to display the Web page.

On the other hand, when a message indicating that there is no corresponding data is received as a result of the communication search in the dedicated server 20, the control means 11 terminates the search (S16). If the facility data has been retrieved in S5, the route search and the route guidance from the current location are started with the facility as the destination.

The user selects the We displayed on the display unit 13.
When the user browses page b and wants to set the facility introduced therein as the destination, he or she inputs the request from the input means 12. The control means 11 having received a request for the facility introduced on the Web page as a destination,
The address b is read from the storage means 15 and transmitted to the dedicated server 20. The dedicated server 20 stores the coordinates of the facility linked to the received Web address in the coordinate database 2.
6 and sends it to the car navigation system 10. Control means 11
Starts the route search and route guidance from the current location to the destination using the ground coordinates of the facility received from the dedicated server as the destination (S17, S18, S19).

[Search Processing in Dedicated Server]

Next, processing on the side of the dedicated server 20 corresponding to the above search processing will be described with reference to FIG. Car navigation system 10
Receives a request for communication search from, the information processing means 21 determines whether the received search keyword is the search condition input by the user in S3 or the information of the facility data obtained in S6 (S21). , S22).

In the case of the search condition input by the user,
b Search the Web address database 24 with reference to the search index structure 23. On the other hand, when the information of the facility data is received, the web address database 24 is searched with reference to the facility database 25.
That is, the Web linked to the search condition input by the user
FIG. 4 shows whether an address exists and whether a Web address linked to the information of the received facility data exists.
Alternatively, search and acquisition are performed based on the data link state described in FIG. 5 (S23).

As a result, when a plurality of Web addresses have been acquired, the list is transmitted to the car navigation system 10, the user is allowed to select one Web address, and information on the selected Web address is received. W obtained as a result of search
Web address when there is only one eb address and by user selection
If the b address is reduced to one, the information processing means 21
Downloads the display data of the Web page indicated by the Web address to the storage unit 22 via the Internet line, and then transmits the display data of the Web page to the car navigation system 10. At this time, if the search condition input by the user has been received as the search keyword of the communication search in S21, the coordinate data of the facility linked to the Web address of the search result is obtained from the coordinate database 26, and the coordinates of the facility are obtained. The data is also transmitted to the car navigation system 10 (S24, S25).

[Collection of Internet Information in Dedicated Server]

The dedicated server 20 collects Web address information stored in the Web address database 24 as needed in parallel with the Web address search processing described above.

The information processing means 21 is a robot
b) automatically traverses the site, searches for a Web page that can be linked to the Web search index structure 23 or the facility database 25, stores the address of the Web page, and performs a data link 2 to the stored Web address.
Then, the process of creating the files 7, 28 is executed (S31).

Then, the current link state is compared with the newly constructed link state (S32). When it is necessary to update the current contents of the Web address database or the current link state, the contents of the Web address database 24 and the structures of the data links 27 and 28 are updated to new information (S33). The information processing means 21 repeatedly executes the above processing at regular intervals (S34).

[Collection of Web Address Based on Web Search Index Structure 23]

Next, a procedure for collecting Web addresses on the Internet will be described in detail. FIG. 9 and FIG.
9 shows a Web address collection procedure based on the search index structure 23.

The information processing means 21 is a We
The user visits page b and browses display data of each web page (S41). Then, it is determined whether the Web page includes a keyword for each genre (S4).
2). Here, the keywords for each genre are shown in FIG.
Shown in The genre names (hotels, department stores, etc.) constituting the Web search index structure 23 are associated with a plurality of different expressions for making the genre names easy to search. These expressions are keywords for each genre.
For example, for a genre name of hotel, "hotel"
Is previously associated with the English expression “HOTEL”.

If the display data of the Web page being browsed does not include a keyword for each genre, the information processing means 21 circulates through other Web pages (S44).

On the other hand, if any of the keywords for each genre is included, it is determined whether or not an address name that can specify the ground coordinates of the facility with an accuracy capable of providing route guidance in the car navigation system 10 is included (S43). Here, an example of an address name that can specify the ground coordinates of the facility is shown in FIG. Generally, if it is described at what level, what number, what number,
The coordinates on the ground corresponding to the address can be specified.

If the address name is not included to such an extent that the ground coordinates can be specified, the information processing means 21 circulates another Web page (S44).

On the other hand, when an address name is included with an accuracy capable of specifying the ground coordinate, the ground coordinate corresponding to the address name is searched from the address database 31 and the currently viewed Web is viewed.
It is associated with the Web address of page b (S4
5). The address database 31 in FIG. 3 is a database that stores the correspondence between the address name, the name of the facility located at the address, the telephone number of the facility, and the ground coordinates (XY coordinates) of the facility.

The information processing means 11 links the information of the Web address of the currently viewed Web page to the index of the genre name to which the keyword for each genre belongs. Also, the information of the Web address is
b. The information is stored in the storage means for registration in the address database 24 (S46).

Next, the information processing means 21 searches the display data of the currently viewed Web page for all possible telephone numbers (10 digits including the actual station number) (S47). As a result of this search, the Web addresses of the page currently being browsed are linked to the indexes of all telephone numbers included in the display data (S48). Further, in order to register the information of the Web address in the Web address database 24, the information is stored in the storage unit 22. At this time, if a telephone number is included with an accuracy capable of specifying the ground coordinates, the coordinates corresponding to the telephone number are searched from the address database and are associated with the Web address.

Next, the information processing means 21 searches the display data of the currently viewed Web page for all the character strings that can be input by the Japanese syllabary search (S49). On this occasion,
The information processing means 21 refers to the kanji dictionary 32 stored in the storage means 22, converts the kanji notation into kana display once, and performs a search. The information processing means 21 links the Web address of the currently viewed Web page to the index of all the character strings included as a result of the search (S5).
0). Further, in order to register the information of the Web address in the Web address database 24, the information is stored in the storage unit 22. At this time, if the facility name includes the facility name with an accuracy capable of specifying the ground coordinates, the coordinates corresponding to the facility name are searched from the address database and are associated with the Web address.

When the processing up to this point is completed, the information processing means 21 circulates another Web page and repeats the processing from S41.

[W based on information in facility database 25]
Collection of eb address]

Next, a procedure for collecting addresses of Web pages corresponding to information in the facility database 25 will be described with reference to FIG.

The information processing means 21 sequentially browses the Web pages on the Internet and determines whether the display data of each Web page includes a search keyword for facility data (S).
51). The search keyword of the facility data has been described with reference to FIG. This is a conventional example stored in the car navigation system 10, but the contents of the facility database 25 stored in the dedicated server 20 are the same.

If the result of this determination is that the search keyword of the facility data is not included, the information processing means 21 will
The page is visited (S54). On the other hand, when the search keyword of the facility data is included, the information processing means 21
The Web address of the currently viewed Web page is linked to the facility data to which the search keyword belongs. Further, in order to register the information of the Web address in the Web address database 24, the information is stored in the storage unit 22. Thereafter, the information processing means 21 circulates through other Web pages and repeats the processing from S51 (S54).

According to the present embodiment described above, information on facilities that can be a destination is automatically updated / extended in the dedicated server based on countless latest Web page information. It is possible to provide route guidance based on the information, and it is also possible to suppress the human labor of the provider who operates the dedicated server.

Since the local database of the navigation device is searched first and the destination information is received from the database of the dedicated server when the user desires, it is necessary to always connect to the server to obtain the destination information. It is more economical in terms of communication cost than a communication-type navigation system that does not have to be used, and it is also possible to use a server in consideration of a communication response according to a time zone.

Further, since the dedicated server and the facility data of the car navigation system and the structure of the search index (search menu) have a common structure, the dedicated server can quickly perform information search for search conditions input from the car navigation system. it can.

Here, the present invention is not limited to the above embodiment. For example, in the case of connecting to a dedicated server and searching for the ground coordinates of the facility, the information of the current location is sent from the car navigation system to the dedicated server, so that the dedicated server A route search from the current location to the destination may be performed. If the Web page corresponding to the Web address searched by the dedicated server does not include the location information (address, etc.) of the facility in response to the keyword of the communication search input from the car navigation system, the information of the Web page is transmitted to the car navigation system. You may control not to distribute. In general, there are many navigation systems serving as clients for the dedicated server. In this case, the dedicated server 20 determines the data transmission destination and the transmission source of the received data by using the IP address of the navigation device serving as the client. Identify.

[0079]

The present invention is constructed and functions as described above. According to this, information on facilities which can be a destination is automatically updated / updated on a dedicated server based on countless latest Web page information. Because it is expanded, it is possible to always provide route guidance based on the latest information,
It is also possible to suppress the human labor of the provider who operates the dedicated server.

In addition, first, the local database of the navigation device is searched, and if the user desires, the information of the destination is received from the database of the dedicated server. Therefore, it is necessary to always connect to the server to obtain the information of the destination. An excellent server communication type navigation system that is more economical in terms of communication costs than a communication type navigation system that cannot be used, and can be used in such a way as to use a server in consideration of the communication response according to the time zone. A system or the like can be provided.

[Brief description of the drawings]

FIG. 1 is an overall system diagram showing an embodiment of the present invention.

FIG. 2 is a configuration diagram of the car navigation system shown in FIG.

FIG. 3 is a configuration diagram of a dedicated server shown in FIG. 1;

FIG. 4 is a link state diagram between a Web search index structure and a Web address database.

FIG. 5 is a link state diagram between a facility database and a Web address database.

FIG. 6 is a diagram illustrating a front end of a destination search procedure in the car navigation system.

FIG. 7 is a diagram showing a destination search procedure in the car navigation system.

FIG. 8 is a flowchart showing a destination search procedure in the dedicated server and a flowchart showing Web address information collection procedures.

FIG. 9 shows a Web corresponding to a Web search index structure.
(b) The first part of the flowchart showing the procedure for collecting address information.

FIG. 10 shows a W corresponding to a Web search index structure.
The second half of a flowchart showing a procedure for collecting eb address information.

FIG. 11 is a diagram showing a specific example of a keyword for each genre and an address name capable of specifying ground coordinates.

FIG. 12 is a flowchart showing a procedure for collecting Web address information corresponding to facility data.

FIG. 13 is a diagram showing a link state between a conventional search menu structure and a facility database.

FIG. 14 is a diagram showing a structure of conventional facility data.

[Explanation of symbols]

 Reference Signs List 10 car navigation (navigation device) 10a car navigation communication device 11 control means 12 input means 13 display means 14 GPS receiver 15 car navigation storage means 20 dedicated server 20a communication device for car navigation 20b communication device for Internet information 21 information processing means 22 Storage means of dedicated server 23 Web search index structure 24 Web address database 25 Facility database 26 Coordinate database 27, 28, 29 Data link 30 Base station 31 Address database 32 Kanji dictionary 40 Telephone network 50 Internet information 51 Search menu structure 52 Data link 53 Facility Database

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) G08G 1/0969 G08G 1/0969 1/137 1/137 F term (reference) 2F029 AA02 AB05 AB07 AC02 AC09 AC13 AC20 5B075 NK02 PP13 PP22 PQ02 PQ05 PQ46 UU14 UU16 5H180 AA01 BB05 BB13 CC12 FF05 FF13 FF22 FF33 9A001 CZ05 JJ04 JJ10 JJ11 JJ25 JJ27 JJ72 JJ77 KK62

Claims (8)

[Claims] An input unit for inputting destination selection information; a database storing destination location information; and a destination location information corresponding to the selection information input from the input unit. If it cannot be found, the external server device is provided with control means for obtaining position information of the destination corresponding to the selected information, and server communication for guiding a route to the destination based on the obtained position information of the destination Mobile device for mobile navigation systems. 2. An input unit for inputting destination selection information, a database storing destination location information, and a destination location information corresponding to the selection information input from the input unit are stored in the database. A control unit for requesting the external server device to transmit information on the destination, and a display unit for displaying information on the destination received from the server device, based on the position information of the destination. Mobile device of a server communication type navigation system that guides a route to the destination. 3. A database in which a keyword for specifying a destination is stored in advance, and an address of a Web page including the keyword for specifying the destination is retrieved from the Internet, associated with the keyword, and stored in a storage unit. Receiving a keyword specifying the destination from an external mobile device, and receiving the keyword associated with the keyword.
A server device of a server communication type navigation system for returning an address or display information of a Web page indicated by the Web address. 4. A search index having the same structure as a search index of a destination stored in the mobile device,
A computer-readable medium storing a destination information search database in which an address of a Web page including information corresponding to each search index is associated with the search index. 5. Destination information which has the same search keyword as a search keyword of a facility stored in the mobile device, and associates an address of a Web page including the search keyword of each facility with information for specifying the facility. A computer-readable medium that records a search database. 6. A process of searching the database for the location information of the destination based on the selection information of the destination input from the input means. If the location information of the corresponding destination cannot be found in the database as a result of the search, an external A medium in which a destination information search program for causing a computer to execute a process of obtaining position information of a destination corresponding to the selection information in a server device is recorded. 7. A process of searching the database for the location information of the destination based on the selection information of the destination input from the input means. If the location information of the destination is found in the database as a result of the search, A medium storing a destination information search program for causing a computer to execute a process of requesting an external server device to transmit information on the destination. 8. The mobile device according to claim 1, wherein the control unit is configured to detect an external server device when the location information of the destination corresponding to the selection information input from the input unit can be found in the database. A destination-related information requesting function for requesting transmission of information on the destination, and display means for displaying information on the destination received from the server device, and the destination based on the location information of the destination. Mobile device of a server communication type navigation system that guides the route to.