JP3495641B2 - Updated map information distribution system, updated map information distribution server system, updated map information distribution client system, method, and recording medium recording the method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention communicates update information of map information (map data such as topographic changes and new road construction, data related to maps managed by coordinate values such as road closures and shop information) possessed by a server system. The present invention relates to an updated map information distribution system that is acquired by a client system and displayed as the latest map information.

[0002]

2. Description of the Related Art Conventionally, a system has been developed for acquiring map data and data related to a map by communicating with the outside and updating the data. For example, Japanese Patent Laid-Open No. 9-
In the "map-related information distribution system" described in Japanese Patent No. 90869, the terminal device acquires data by transmitting distribution request information including the input data type and position identification information from the terminal device to the host device. To do.

This requires that the user of the terminal device make a request for data, and must make a request regardless of whether or not the data is updated on the host side.

Further, in the "electronic map system and car navigation device" described in Japanese Patent Laid-Open No. 8-95488, the terminal device periodically connects to the host side to check the presence or absence of updated data and update the data. If the data exists, all update data is received and acquired.

This is to receive all update data at that time, although the data request is made periodically.

[0006]

As described above, in the conventional system, there is no distinction between the acquisition of update information and the acquisition of update data, and all updated data is acquired regardless of its range. ing. Therefore, the user
It is difficult to trigger an update request.

[0007] In general, map data stores a wide range of data such as the whole of Japan and the Kanto region.
Since it is necessary to acquire data for areas where there is little possibility of seeing, the amount of communication data becomes enormous,
Communication costs will be high.

That is, in the conventional system, the map data and the data related to the map are acquired by the communication with the outside,
In order to update the data, there are problems of the update request method and the communication data amount.

An object of the present invention is to make it possible to easily make an appropriate update request when acquiring map data or data related to a map through communication with the outside, and to acquire update map information by communication with a small amount of data. It is to provide a map information distribution system, a method, and a recording medium recording the method.

[0010]

The update map information distribution system of the present invention comprises an update map including a server system having an update map information database and a client system for receiving the update map information by communicating with the server system. An information distribution system, wherein the server system decomposes updated map information into updated map data for each mesh, adds mesh update information to the updated map data, and stores the updated map in the updated map information database. A data storage unit, a map data re-updating unit that re-updates the updated map data for each mesh based on the valid period of the mesh update information stored in the updated map information database; and a request from the client system. When received, if the received data is the final status confirmation information, And Status confirmation information by searching the update map information database based on the mesh update information reading update required mesh information is information about the mesh that require updating the updates information retrieval means, the request from the client system When the received data is update request mesh information when received, map data search means for searching the update map information database based on the update request mesh information and reading the update map data of the mesh, A communication unit that receives a request from the client system and transmits to the client system the update-required mesh information that is the search result of the update information search unit or the updated map data that is the search result of the map data search unit. And the client system is a map Information storing means for storing information, update data storing means for storing update map data and update information thereof, and update mesh information required to be updated received from the server system, and the update map received from the server system. and updating data storage means for storing data to be added to update information in the update data storage means, said stored the final current status confirmation information for requesting the update required mesh information to the server system to the update data storage means Update information
The update data storage means, the update information of the mesh that may be displayed is obtained, and the update information is compared with the update necessary mesh information stored in the update data storage means. Then, an update inspection means for generating update request mesh information for requesting the update map data to the server system when update is required, and transmitting the final present state confirmation information to the server system, Communication means for receiving the update-required mesh information as a search result, transmitting the update-request mesh information to the server system, and receiving the updated map data as a search result for the server system, and a map information display request. The map information stored in the map data storage means, and the update data storage means Reading the stored update map data, it determines the update condition, characterized by comprising a display means for displaying the latest map information.

Further, the update map information distribution method of the present invention includes a server system having an update map information database, a map data storage unit for storing map information, and an update map.
Update data storage means for storing data and update information thereof
And a method for delivering updated map information to a client system that receives updated map information by communicating with the server system, wherein the server system converts the updated map information into updated map data for each mesh. Disassemble,
Mesh update information is added to the updated map data and stored in the updated map information database, and the updated map data is re-created for each mesh based on the validity period of the mesh updated information stored in the updated map information database. Update and receive a request from the client system,
The data received from the client system
Generated from the update information stored in the update data storage means
If it is the final current state confirmation information to be performed, the update map information database is searched based on the final current state confirmation information, and the mesh requiring update from the mesh update information is searched.
If the data received from the client system is update request mesh information, the above-mentioned update mesh information is read based on the update request mesh information. Search the updated map information database,
It is characterized in that the updated map data of the corresponding mesh is read and the updated map data is transmitted to the client system.

Further, the update map information distribution method of the present invention includes a server system having an update map information database, a map data storage unit for storing map information, and an update map.
Update data storage means for storing data and update information thereof
And a method for delivering updated map information to a client system that receives updated map information through communication with the server system , wherein the client system comprises:
The mesh that needs to be updated in the server system
The final status confirmation information for requesting the update-required mesh information, which is information to be updated , is stored in the update data storage means.
Generated from the update information , transmitting the final present state confirmation information to the server system, receiving update necessary mesh information as a search result of the server system, updating the update necessary mesh information, and updating the update data storage means. By searching, obtain update information of the mesh that may be displayed, and compare the update information with the update necessary mesh information,
Generate update request mesh information for requesting the update map data to the server system when update is required, send the update request mesh information to the server system, and update the update result as a search result of the server system. The map data is received, the update information is added to the map data and stored in the update data storage means, and the map information stored in the map data storage means in response to the map information display request, and the update data It is characterized in that the updated map data stored in the storage means is read out, the updating condition is judged, and the latest map information is displayed.

Further, a recording medium recording the update map information distribution method of the present invention records a program for causing a computer to execute the processing procedure in the update map information distribution method, to a computer-readable recording medium. It is characterized by having done. Further, the updated map information distribution server system of the present invention includes a server system having an updated map information database and map data for storing map information.
Storage means and update map data and update information are stored
A server system in an update map information distribution system comprising an update data storage means and a client system for receiving update map information by communicating with the server system, wherein the updated map information is updated map data for each mesh. Based on the effective period of the mesh update information stored in the update map information database, and the update map data storage means for storing the update map information database by adding the mesh update information to the update map data. the map data re updating means for updating the map data to re-update for each mesh, upon receiving a request from the client system, the received data is pre
From the update information stored in the update data storage means.
If it is the final present condition confirmation information to be formed, the updated map information database is searched based on the final present condition confirmation information,
From the mesh update information to the mesh that needs updating
Update information retrieving means for reading out the update-required mesh information, which is related information, and when the received data is update request mesh information when the request is received from the client system A map data search unit that searches the updated map information database and reads the updated map data of the corresponding mesh, and a request from the client system, and the updated mesh information that is the search result of the updated information search unit. Alternatively, a communication unit for transmitting the updated map data, which is the search result of the map data search unit, to the client system is provided. Further, the updated map information distribution client system of the present invention is a client system in the updated map information distribution system, which comprises a server system provided with an updated map information database and a client system which receives updated map information through communication with this server system. The map data storage means for storing map information, the update data storage means for storing the updated map data and the update information, and the mesh requiring update received from the server system.
Update data storage means for updating the update-required mesh information which is related information and adding the update information to the update map data received from the server system and storing the update map data in the update data storage means ; The update information stored in the update data storage means is final confirmation information for requesting the necessary mesh information.
And update information of the mesh that may be displayed by searching the update data storage means and comparing the update information with the update-necessary mesh information stored in the update data storage means. An update inspection means for generating update request mesh information for requesting the updated map data to the server system when update is required, and transmitting the final present condition confirmation information to the server system, A communication unit that receives the update required mesh information as a search result, transmits the update request mesh information to the server system, and receives the updated map data as a search result of the server system, and a map information display request. In contrast, the map information stored in the map data storage means and the update data storage means Reads paid has been updated map data, it determines the update condition, characterized by comprising a display means for displaying the latest map information.

[0014]

[Function] By dividing the updated map information into data for each predetermined mesh, there is no need to worry about data such as data that crosses meshes, and input of updated map information is restricted. Make sure you don't have to wear it. Also, by disassembling each mesh,
Make it easier to compare if you need to update.

Based on the validity period of the mesh update information,
By updating the map information again, in the case of information with a time limit such as detouring due to construction, it is not necessary to input the information for detouring again after the expiration of the valid period.

By using the update-required mesh information regarding the update-required mesh based on the final present condition confirmation information, it is possible to separately grasp the current update status and obtain the update data, and the client system needs to update. Be able to determine if there is.

When there is a mesh that may be displayed on the client system side, the update request mesh information requested from the server system by comparing the update information of the mesh with the update necessary mesh information received from the server system. You want to see by generating
Reduce the amount of communication data by acquiring only the update data in the range you need to see.

On the client system side, data is read from the stored updated map data and the map data, the update condition is judged, and the latest information is displayed so that the original map data is not updated. , The latest information can be displayed, and the accuracy of the original map data is prevented from being lowered due to incorrect information.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION 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 server system of an updated map information distribution system according to the present invention, and FIG.
It is a block diagram which shows the principal part structure of one client system. The server system, the client system, and the distribution process of the updated map information will be individually described below.

(Server System) As shown in FIG. 1, the server system includes an updated map information database 102, an updated map data storage means 110, and a map data re-update means 1.
20, update information search means 130, map data search means 1
40 and communication means 150.

The updated map data storage means 110 receives the updated map data 101, performs processing for storing the updated map data in the updated map information database 102, and outputs the processing result to the updated map information database 102.

The updated map information database 102
Is a database that stores the updated data with respect to the original map data before the update. The data of the coordinate point sequence of the figure existing in the map, the attributes given to the figure, and the network of passages. Link the roads that represent the structure,
It includes data having intersections as nodes and mesh update information managed for each mesh. This mesh update information is data including mesh information, layer information, update date information, version information, effective period information, update source version information, and the like.

The map data re-updating means 120 re-updates the data stored in the updated map information database 102 based on the valid period information stored in the mesh update information of the updated map information database 102.

The update information retrieval means 130 is the communication means 15
Processing is performed in response to a request from the client system side that is received as 0, based on the final status confirmation information included in the request, the update-required mesh information regarding the update-required mesh is read from the update map information database 102 and output to the communication unit 150. .

The map data search means 140 is the communication means 1
At step 50, processing is performed according to the request from the client system side, and based on the update request mesh information included in the request, the updated map data of the corresponding mesh is read from the update map information database 102, and the communication means 1
Output to 50.

The communication means 150 receives various requests from the client system and sends the results corresponding to the requests to the requesting client system.

(Client System) The client system is, as shown in FIG. 2, a map data storage means 20.
1, update data storage means 202, display means 210, update inspection means 220, update map data storage means 230, and communication means 240.

In response to the display request, the display means 210 acquires the data stored in the map data storage means 201 and the update data storage means 202, judges the update condition, and displays the latest information. The update data storage means 202
Includes map data updated from the server system and update information managed for each mesh.
This update information is data including mesh information, layer information, information acquisition server information, update date information, current version information, valid period information, and the like.

The update inspection unit 220 receives the update-required mesh information from the update data storage unit 230, performs the process, and processes the mesh that may be displayed next,
The update information stored in the update data storage unit 202 is compared with the update-necessary mesh information, and the update request mesh information required by the server system is generated and output to the communication unit 240. Further, it periodically generates final present state confirmation information from the update information stored in the update data storage means 202 and outputs it to the communication means 240.

The update map data storage means 230 receives a request from the server system side received by the communication means 240, performs processing, adds update information to the update map data, and stores it in the update data storage means 202. Alternatively,
The update-required mesh information is input to update the update-required mesh information.

The communication means 240 transmits a request such as update request mesh information to the server system and, conversely, receives a search result such as updated map data from the server system side.

(Distribution process of updated map information) FIGS. 3 to 8
FIG. 6 is a diagram for explaining an update map data distribution process according to actual data in a system having each of the above means.

FIG. 3 shows the processing procedure of the updated map data storage means 110 and the map data re-update means 120. When the updated map data is input, it is decomposed into data for each mesh (S1), mesh update information is generated for this data for each mesh (S2), and the updated map information database 1
No. 02 is stored (S3).

In these processes, for example, when the updated map data as shown in FIG. 4 (a) is input, it is decomposed into data A to D for each mesh cut by the X and Y axis coordinates. Then, mesh update information as shown in FIG. 4B is generated and stored in the update map information database 102.

Returning to FIG. 3, the map data re-updating means 12
0 determines whether or not the valid period has expired based on the valid period information stored in the mesh update information of the updated map information database 102 (S4), and if there is finished data (S5). In step S6, the data stored in the updated map information database 120 is updated again. As a result, after the expiration of the valid period, the data is re-updated by returning the data to the update source version and reflecting the updated amount again.

FIG. 5 shows a processing procedure of the update information search means 130, the map data search means 140, and the communication means 150. When the request from the client system is received (S11), the update information retrieval unit 130 or the map data retrieval unit 140 uses the received data to retrieve the update request message.
Determine Gerhard information or a final current status confirmation information (S12), if it is the last current state confirmation information update information retrieval unit 130 to search for the update must mesh information (S13), the map data if the update request mesh information The search means 140 searches for updated map data (S14), and sends the results of these searches to the client system (S15).

By these processes, when the client system request is to retrieve the final present condition confirmation information, for example,
The update-required mesh information as shown in FIG. 6 is transmitted.
Further, when the request of the client system is a search for the update request mesh number, the update map data is transmitted.

FIG. 7 shows the processing procedure of the display means 210, the update inspection means 220, the update map data storage means 230, and the communication means 240 of the client system. When there is a display request for a certain mesh (S21), the display means 210
Then, the map data storage means 201 and the update data storage means 2
From the stored contents of 02, the degree of data update is judged and the latest information is displayed (S22).

When there is a request for displaying a certain mesh, the update inspection means 220 acquires update information of the mesh that may be displayed next (S23), and this update information is stored in the update data storage means 202. The stored update information is compared (S24), and when update is necessary,
Update request mesh information requested to the server system is generated (S25). The communication means 240 outputs the update request mesh information to the server system (S26), receives the update map data as a search result, adds the update information to the update map data by the update data storage means 230,
The data is stored in the update data storage means 202 (S27).

As for the update required mesh information, the update inspection unit 220 checks the update status from the update information in the update data storage unit 202 (S 28), and if update is necessary (S 29), the update request mesh is displayed. Information is generated (S26). In this case, in response to the request to the server system (S26), the communication unit 240 uses the update request mesh.
Information is sent to the server system and the updated location is returned as a search result.
The graphic data is received (S27). Then, the updated map data storage means 230 inputs the updated map data ,
I will update it.

FIG. 8 shows an example of update processing by the update checking means 220. It is assumed that (a) of the same figure is map data for which display of mesh: X, Y, layer: building, road, and traffic information is requested.

The update inspection means 220 generates update request mesh information for the 8 meshes around the meshes X and Y which may be displayed next. Here, it is assumed that the mesh: X + 1, Y needs to be updated, and the update request mesh information as shown in FIG. 8B is generated. The updated map data is acquired by accessing the server system described in the update request mesh information, and when the display is requested next, as shown in (c) of FIG. , The updated map data and traffic information are updated and displayed.

The update inspection means 220 also generates final present state confirmation information from the update information of the update data. The server system described in the final present status confirmation information is accessed to obtain the update-need mesh information, and the update map data storage unit 230 updates the update-necessity mesh information.

The present invention has been specifically described above based on the embodiments. However, it goes without saying 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. Nor. For example, instead of map data, data related to a map managed by coordinate values may be used.

The present invention also enables a part or all of the apparatus shown in FIG. 1 or 2 or the method shown in FIGS. 3, 5 and 7 to be described by a computer program so that it can be executed. , A computer-readable recording medium such as FD (floppy (registered trademark) disk), MO, ROM, memory card, CD, DVD,
It is possible to record it on a removable disk and provide it for distribution.

[0046]

As described above, the present invention has the following effects.

(1) By dividing the updated map information into data for each predetermined mesh, there is no need to worry about information such as data that crosses meshes, and input of updated map information There is no need to put restrictions on.

(2) Since the mesh is defined, it becomes easy to compare whether or not it needs to be updated.

(3) In the case of information with a time limit such as detouring due to construction by re-updating the map information based on the valid period of the mesh update information, after the valid period ends, the detouring information etc. Eliminates the need to enter.

(4) By using the update-required mesh information regarding the update-required mesh based on the final present state confirmation information, the grasp of the current update status and the acquisition of the update data can be separately performed, and the client system side can You can decide if you need to update.

(5) When there is a mesh that may be displayed on the client system side, the update information of the mesh is compared with the update-required mesh information received from the server system to request the server system. By generating the update request mesh information, it is possible to select only the update information in the range that the user wants to see or needs to see, and the communication data amount can be reduced.

(6) On the client system side, the map information is read from the stored updated map information and the original map information, the update condition is judged, and the latest information is displayed to display the original map information. The latest information can be displayed without updating the information, and it is possible to prevent the accuracy of the original map data from being lowered due to incorrect information.

[Brief description of drawings]

FIG. 1 is a block diagram of a server system showing an embodiment of the present invention.

FIG. 2 is a block diagram of a client system showing an embodiment of the present invention.

FIG. 3 is an updated map data storage means 11 in the embodiment.
0 and the processing procedure diagram of the map data re-update means 120.

FIG. 4 is a diagram for explaining update map data (a) and mesh update information (b) in the embodiment.

FIG. 5 is a processing procedure diagram of update information search means 130, map data search means 140, and communication means 150 in the embodiment.

FIG. 6 is an example of update-required mesh information according to the embodiment.

FIG. 7 is a processing procedure diagram of the display unit 210, the update inspection unit 220, the update map data storage unit 230, and the communication unit 240 of the client system according to the embodiment.

FIG. 8 shows an example of update processing by the update inspection means 220 in the embodiment.

[Explanation of symbols]

102 ... Updated map information database 110 ... Update map data storage means 120 ... Means for re-updating map data 130 ... Update information retrieval means 140 ... Map data search means 150, 240 ... Communication means 201 ... Map data storage means 202 ... Update data storage means 210 ... Display means 220 ... Update inspection means 230 ... Update data storage means

Continuation of the front page (56) Reference JP-A-11-51666 (JP, A) JP-A-10-170285 (JP, A) JP-A-5-274592 (JP, A) JP-A-9-145383 (JP , A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) G09B 29/00-29/14 G06F 13/00 354 G06T 17/50

Claims (6)

(57) [Claims] 1. An update map information distribution system comprising a server system having an update map information database and a client system for receiving update map information by communicating with the server system, wherein the server system is updated. Updated map data storage means for decomposing the map information into updated map data for each mesh, adding mesh update information to the updated map data and storing the updated map information in the updated map information database, and stored in the updated map information database. Map data re-updating means for re-updating the updated map data for each mesh based on the validity period of the mesh update information, and when receiving a request from the client system,
If the received data is the final current status confirmation information, the updated map information database is searched based on the final current status confirmation information, and the mesh update information needs to be updated.
Update information retrieval means for reading out update-required mesh information, which is information about the mesh, and a request from the client system,
If the received data is update request mesh information, map data searching means for searching the update map information database based on the update request mesh information and reading the update map data of the corresponding mesh; A communication unit that receives the request and transmits the updated mesh information that is the search result of the update information search unit, or the updated map data that is the search result of the map data search unit to the client system, The client system includes map data storage means for storing map information, update data storage means for storing updated map data and the update information, and update the update-necessary mesh information received from the server system, and the server system. The updated map data received from And updating data storage means for storing the update data storage means by adding the said final current status confirmation information for requesting the update required mesh information to the server system update data storage
Generated from the update information stored in the means ,
Searching for the update data storage means, obtains the update information of the mesh that may be displayed, comparing the update required mesh information stored in the update data storage means and the update information, require updating Update check means for generating update request mesh information for requesting the updated map data to the server system when transmitting, and transmitting the final present situation confirmation information to the server system,
Communication means for receiving the update required mesh information as a search result of the server system, transmitting the update request mesh information to the server system, and receiving the updated map data as a search result of the server system; In response to the display request, the map information stored in the map data storage means and the updated map data stored in the update data storage means are read out, the degree of update is determined, and the latest map information is displayed. An updated map information distribution system comprising a display means. 2. A server system having an updated map information database, and map data storage means for storing map information.
And the update data that stores the update map data and the update information.
An update map information distribution method with a client system that receives update map information by communicating with the server system , the server system updating the updated map information for each mesh. The map is decomposed into map data, the mesh update information is added to the map update data and stored in the map update information database, and the map update is performed based on the validity period of the mesh update information stored in the map update database. re update the data for each mesh, the receiving a request from the client system, the data received from the client system said
Generated from the update information stored in the update data storage means
If it is the final present state confirmation information, the updated map information database is searched based on the final present state confirmation information, and the mesh update information is changed to a mesh that needs updating.
If the data received from the client system is update request mesh information, then the update-required mesh information, which is related information, is read, and the update-required mesh information is transmitted to the client system. An updated map information distribution method comprising: searching an updated map information database, reading updated map data of a corresponding mesh, and transmitting the updated map data to the client system. 3. A server system having an updated map information database, and map data storage means for storing map information.
And the update data that stores the update map data and the update information.
And a data storage unit, and an update map information distribution method between a client system that receives the update map information by communication with the server system, the client system requires an update to the server system mesh Concern
The final status confirmation information for requesting the update-required mesh information, which is information to be updated , is stored in the update data storage means.
Generated from the update information , transmitting the final present state confirmation information to the server system, receiving update necessary mesh information as a search result of the server system, updating the update necessary mesh information, and updating the update data storage means. A search is performed to obtain update information of the mesh that may be displayed, the update information is compared with the update-needed mesh information, and the update map data is requested to the server system when update is required. Generating update request mesh information for transmitting the update request mesh information to the server system, receiving the update map data as a search result of the server system, adding update information to the map data, and updating the map data. In response to the map information display request stored in the data storage means, the map information stored in the map data storage means A method for delivering updated map information, characterized in that the updated map data stored in the updated data storage means is read, the degree of update is determined, and the latest map information is displayed. 4. Update map information, characterized in that a program for causing a computer to execute the procedure of the update map information distribution method according to claim 2 or 3 is recorded in a computer-readable recording medium. A recording medium that records the distribution method. 5. A server system having an updated map information database, and map data storage means for storing map information.
And the update data that stores the update map data and the update information.
A server system in an updated map information distribution system comprising a client system for receiving updated map information through communication with the server system , the updated map information being converted into updated map data for each mesh. On the basis of the effective period of the mesh update information stored in the update map information database, which is decomposed and added with the mesh update information to the update map data and stored in the update map information database, Map data re-updating means for re-updating the updated map data for each mesh, and when receiving a request from the client system,
The received data is stored in the update data storage means
If the final status confirmation information is generated from the update information, the update map information database is searched based on the final status confirmation information, and the mesh update information is information regarding the mesh that needs to be updated. Update information retrieval means for reading mesh information, and when receiving a request from the client system,
If the received data is update request mesh information, map data searching means for searching the update map information database based on the update request mesh information and reading the update map data of the corresponding mesh; A communication unit that receives the request and transmits the update-necessary mesh information that is the search result of the update information search unit or the updated map data that is the search result of the map data search unit to the client system. An updated map information distribution server system characterized in that 6. A client system in an updated map information distribution system, comprising: a server system having an updated map information database; and a client system that receives updated map information through communication with the server system, and stores map information. Map data storage means, update data storage means for storing updated map data and update information thereof, and a message requiring update received from the server system.
Updates the update required mesh information is information related shoe, and update data storage means for storing the update data storage means adds the update information to the update map data received from the server system, the said server system The final data confirmation information for requesting the update-required mesh information is the update data storage means.
And it generates from the update information stored in, by searching the update data storage means, obtains the update information of the mesh that may be displayed, stored in the update data storage means and the update information the Update check means for comparing update necessary mesh information and generating update request mesh information for requesting the update map data to the server system when update is required, and the final present condition confirmation information to the server system. Send,
Communication means for receiving the update required mesh information as a search result of the server system, transmitting the update request mesh information to the server system, and receiving the updated map data as a search result of the server system; In response to the display request, the map information stored in the map data storage means and the updated map data stored in the update data storage means are read out, the degree of update is determined, and the latest map information is displayed. An updated map information distribution client system comprising: a display unit.