JPH1125259A - Map plotting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately display the physical relationship of a road or a building and also to accelerate processing even when the display scale of a map is changed by discriminating vector data of a road, etc., according to a designated coordinate position and extracting attribute data that is associated with the vector data to display. SOLUTION: In a client terminal 2, a communication modem 2e receives vector data and attribute data which are sent from a server. A CPU 2a creates an image of a map, based on received vector data. A display device 2c displays the image of a created map. A keyboard 2d and a mouse 2f specify the coordinate position of a prescribed road or a building on a displayed map. The CPU 2a specifies the vector data of a road or a building according to a designated coordinate position and extracts attribute data which is associated with the vector data. Then it displays extracted attribute data on the device 2c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a map drawing system for drawing a map and displaying the map on a screen.

[0002]

2. Description of the Related Art There is known a geographic information system for providing geographic data such as a road map stored on a server to a client via a network.

In such a system, an area is specified on the client side, and geographic data of the area specified on the client side is searched on the server side and transmitted to the client side. Then, the client receives the geographic data from the server and outputs it to a display device such as a display.

[0004] The geographical data includes a map in which the positions of prominent stores and buildings such as a post office, a bank, a gas station, and a convenience store are described, along with the positional relationship of roads, and a map displayed on a display device. , The user can grasp the position of a famous store or building.

[0005]

In the geographic data system as described above, a map is drawn on the server side and the map is transmitted to the client side as image data. Is
It is necessary for the server side to redraw the map data of the scale requested by the client side and transmit it to the client side, and there is a problem in that enlargement processing, reduction processing, and data transfer thereof take time.

Further, when searching for attribute data indicating the business hours, business contents, or handled products of a store or the like written on a map, a system different from the geographic data system must be used. There is a problem that operation becomes complicated.

The present invention has been made in view of the above-mentioned problems, and in a system for providing geographic data from a server to a client, the client can cope with a map reduction process and an enlargement process. Further, it is an object of the present invention to provide a technology capable of searching attribute data of a store or the like described on a map, thereby speeding up processing and improving operability.

[0008]

The present invention employs the following means to solve the above-mentioned problems. That is, the map drawing system according to the present invention is a system including a server and a client, and the server includes vector data specifying the shapes of roads and buildings represented on a map, and the data of the roads and buildings. Data storage means for storing attribute data in association with each other; data reading means for reading vector data and attribute data from the data storage means; and vector data and attribute data read by the data reading means. Data transmitting means for transmitting to the client, the client is a data receiving means for receiving the vector data and attribute data transmitted from the server, based on the vector data received by the data receiving means, a map Map drawing means for generating an image of Map display means for displaying the image of the displayed map, designating means for designating the coordinate position of a predetermined road or building on the map displayed by the map display means, and a coordinate position designated by the designating means. Attribute data extracting means for determining vector data of the road or the building and extracting attribute data associated with the vector data; and attribute data display means for displaying the attribute data extracted by the attribute data extracting means. And

Here, the attribute data of the road is, for example, a toll if the road is a toll road, a bus fare or a timetable if the road is a bus route. Also,
A building is, for example, a signal, a sign, a parking lot, a public toilet,
Including buildings of public institutions (post offices, government offices, etc.), hospitals, stores, houses, parks, amusement parks, museums, museums, zoos, etc.
The attribute data of the building is, for example, data indicating business hours (reception hours) of public institutions and stores, business contents, products handled, and the like.

[0010] The client may further include magnification designating means for designating a change in the magnification of the map displayed by the map display means. In this case, the map drawing means may correct the vector data according to the magnification specified by the magnification specifying means, and generate a map image based on the corrected vector data.

Next, a map drawing apparatus according to the present invention provides a data receiving means for receiving vector data specifying the shape of an object described on a map and attribute data of a predetermined object, which are associated with each other. A map drawing means for generating a map image of a desired scale based on the vector data received by the data receiving means; a map display means for displaying a map image generated by the map drawing means; Designation means for designating the coordinate position of a predetermined object written on the map displayed on the screen by the map display means;
An attribute data output unit that determines vector data of the object from the coordinate position of the object specified by the specifying unit, and outputs attribute data associated with the vector data.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a map drawing system according to the present invention will be described below with reference to the drawings.

<Structure of Map Drawing System> FIG. 1 is a diagram showing a schematic structure of a map drawing system. The map drawing system is mutually connected via a network NW.
A server terminal 1 and a plurality of client terminals 2 are provided.

<Configuration of Server Terminal 1> The server terminal 1
Are interconnected by a bus, as shown in FIG.
It includes a CPU 1a, a main storage device (MM) 1b, and an input / output interface IF. The input / output interface I / F includes a map file 1c and an attribute database 1d.
Is connected, and the communication modem 1e is connected via the router 1f.

The map file 1c includes vector data for specifying the position and shape of a road displayed on a map (code information for specifying an individual road or building, and contours of individual roads (including contours of center lines). ) And vector data of a polygon that specifies the outline of a mark representing a building) is stored in units of figures and leaves obtained by dividing the map into a grid, and the vector data in units of figures is stored in units of layers. It is divided and memorized. Then, at the time of map display, vector data is extracted from all the plots in the display area and transmitted to the client terminal 2, so that the user does not recognize the boundaries of the plots.

The map is divided into local units, for example, the Kanto region and the Kansai region, and each region is divided into prefecture units. Are divided into Oaza and Chome units,
In addition, since the large letters and the streets are divided into address units, the polygons of each vector data are linked with the division code specifying each division, and each division code is linked with the upper division code and the lower division code. (For example, the division code of Tokyo is linked to the division code of the Kanto region and the division code of 23 wards).

Further, of the vector data, to the code information for specifying a predetermined road and a predetermined building, link information for specifying attribute data of the road and the building is added. Here, the attribute data includes a road,
This is data indicating attributes of a store, a public institution, a medical institution, an event venue, and the like, and is stored in the attribute database 1d.
The road attribute data is, for example, data indicating a road name, whether or not the route is a bus route, a bus stop position, a bus stop name, and the like. The attribute data of the store is, for example, data representing a telephone number, business hours, business contents, products handled, and the like. The attribute data of the public institution is data representing a telephone number, a reception time, a handling business, and the like. The attribute data of the medical institution is data representing a telephone number, a medical field, a reception time, whether or not hospitalization is possible, and the like.

Further, the link information is information for specifying an address of a link information registration table. The link information registration table has an attribute of each road and each building for each code information of each road and each building. The data address is registered. Then, the link information registration table is divided and stored in the map file 1c so as to correspond to the vector data divided in units of figures.

Each link information registration table is further classified according to the attribute of each road and each building. For example, in the case of a road, it is classified into a national road, a prefectural road, a toll road, and an expressway, and Cases are classified according to the type of business, such as parking lots, public toilets, parks, banks, post offices, convenience stores, restaurants, department stores, and the like. The list of attributes thus classified (attribute classification list) is added to the vector data.

Next, an application program to be executed by the CPU 1a is stored in the main storage device 1b, and the server according to the present invention is realized by the CPU 1a executing the application program.
Specifically, when a signal received by the communication modem 1e is input, the CPU 1a transmits a response signal to the signal to the network NW via the router 1f and the communication modem 1e. 1e
Is a signal indicating a map data search request from the client terminal 2, the map file 1c and the attribute database 1d are searched, and the vector data of the section indicated by the map data search request signal and the vector The link information registration table corresponding to the data and the attribute data corresponding to the vector data are extracted, and these data are stored in the router 1f and the communication modem 1e.
To the client terminal 2 via.

An application program including such a procedure may be stored in a recording medium such as an optical disk or a magnetic disk and provided to a server. <Configuration of Client Terminal 2>
As shown in FIG. 3, CPs interconnected by a bus
U2a, main memory MM1b, and input / output interface I
F. The input / output interface IF includes a display device 2c, a keyboard 2d, and a mouse 2d.
f is connected.

The main storage 2b stores an application program to be executed by the CPU 2a. Then, the CPU 2a realizes a server or a map drawing device according to the present invention by executing the application program of the main storage device 2b. In particular,
The CPU 2a transmits and receives signals to and from the server terminal 1 via the communication modem 2e, and obtains vector data, a link information registration table, and attribute data of an area designated by the user of the server terminal 2. Then, the CPU 2a
The map of the area is drawn according to the vector data obtained from the server terminal 1 and output from the display device 2c.

An application program including such a procedure may be stored in a recording medium such as an optical disk or a magnetic disk and provided to a client.

<Operation and Effect of Embodiment> The operation and effect of this embodiment will be described below. In the client terminal 2, when acquiring map data from the server terminal 1, the CPU 2a executes a map search request processing routine shown in FIG. In the map search request processing routine, the CPU 2a displays a pull-down menu for selecting a map area on the display device 2c. In the pull-down menu, a list of area names in the widest range is displayed. In this case, a list of local names in Japan is displayed (S401).

Then, the keyboard 2d or the mouse 2
When a signal designating an arbitrary local name from f is input (S
402), the CPU 2a makes a call to the server terminal 1 via the communication modem 2e, and transmits an area code specifying the local name (S403).

When the server terminal 1 receives the area code, the server terminal 1 returns a list of local prefectures specified by the area code, so that the CPU 2a of the client terminal 2 transmits the list via the communication modem 2e. The list of prefecture names is received (S404), and then the list of prefecture names is displayed on the display device 2c (S40).
5).

Subsequently, when a signal designating an arbitrary prefecture name is input by the keyboard 2d or the mouse 2f (S406), the CPU 2a transmits the area code of the designated prefecture name to the server terminal 1 (S406). S407).

In this case, when the server terminal 1 receives the area code, the server terminal 1 returns a list of municipalities of the prefecture specified by the area code, so that the CPU 2a of the client terminal 2 transmits the communication modem 2e. The list of municipalities is received via the Internet (S408), and the list of municipalities is displayed on the display device 2c (S408).
409).

When a signal for designating an arbitrary city, town, or village name is input from the keyboard 2d or the mouse 2f (S410), the CPU 2a transmits the area code of the designated city, town, or village name to the server terminal 1. (S411).

At this time, the server terminal 1 returns a list of the capital / chome names of the municipalities specified by the area code from the client terminal 2, so that the CPU 2a of the client terminal 2 transmits the communication modem 2e. The O / Chome name list is received (S412), and then the O / Chome name list is displayed on the display device 2c (S413).

Subsequently, when a signal for designating an arbitrary Oaza / Chome name is input from the keyboard 2d or the mouse 2f (S414), the CPU 2a transmits the area code of the designated Oaza / Chome name to the server terminal 1. Yes (S41
5).

At this time, the server terminal 1 returns the list of the Oaza / Chome addresses specified by the area code from the client terminal 2, so that the client terminal 2
CPU 2a receives the address list via the communication modem 2e (S416), and then displays the address list on the display device 2c (S417).

Next, when a signal designating an arbitrary address is input by the keyboard 2d or the mouse 2f (S418), the CPU 2a transmits a request signal of the area code of the designated address and the map data to the server terminal 1. Yes (S4
19).

In this case, the CPU 1a of the server terminal 1
The map search processing routine shown in FIG. 5 is executed. And
In the map search processing routine, when the CPU 1a receives the area code and the map data request signal from the client terminal (S501), the CPU 1a searches the map file 1c, and the area specified by the area code (the address in this case). Read out vector data representing the map of (S
503).

Subsequently, the CPU 1a executes the map file 1c
The link information (address of the link information registration table) added to the read vector data is extracted (S
504). Then, the CPU 1a extracts a link information registration table specified by the link information, and extracts an address of attribute data corresponding to the vector data from the link information registration table (S1).
505).

Next, the CPU 1a accesses the attribute database 1d and reads the attribute data specified by the address extracted in S505 (S506).
Then, the CPU 1a executes the processing in S503, the processing in S504,
The vector data, attribute data, and link information table (hereinafter referred to as map data) extracted in S506 are transmitted to the client terminal 2 (S507).

Here, returning to FIG.
CPU 2a receives the map data transmitted from the server terminal 1 via the communication modem 2e (S421). In S406, when a signal designating an arbitrary prefecture name is not input and a signal designating a map display is input (S406, S419), the CPU 2a proceeds to S42.
In step S401, the local area code specified in step S401 and the map data request signal are transmitted to the server terminal 1.

In this case, the server terminal 1 transmits the map data including the local vector data, the link information registration table, and the attribute data specified by the area code from the client terminal 1, so that the CPU 2a of the client terminal 1 Transmits the map data to the communication modem 2e.
(S421).

Further, in S410, when a signal designating an arbitrary city, town, and village is not input and a signal designating a map display is input (S410, S419), the CP
U2a proceeds to S420, and transmits the area code of the prefecture designated in S406 and a map display request signal to the server terminal 1.

In this case, the server terminal 1 executes the above-mentioned map search processing routine, thereby corresponding to the vector data of the prefecture specified by the area code from the client terminal 1 and the vector data of the prefecture. Since the map data including the link information registration table and the attribute data corresponding to the vector data of the prefectures is transmitted, the CPU 2a of the client terminal 1 receives the map data via the communication modem 2e (S4).
21).

In S414, if a signal for designating an arbitrary Oaza / chome name is not input and a signal for designating a map display is input (S414, S419), the CP
U2a proceeds to S420, and transmits the area code of the municipalities designated in S410 and a map display request signal to the server terminal 1.

In this case, the server terminal 1 includes vector data representing a map of a city, town, and village specified by the area code from the client terminal 1, a link information registration table corresponding to the vector data of the city, town, and village. Since the map data including the attribute data corresponding to the vector data of the municipalities is transmitted, the CP of the client terminal 1 is transmitted.
U2a receives the map data via the communication modem 2e (S421).

Further, in S418, when a signal designating an arbitrary address is not input and a signal designating a map display is input (S418, S419), the CPU 2a
Goes to S420, and the O /
An area code and a map display request signal are transmitted to the server terminal 1.

In this case, the server terminal 1 includes: a vector data representing a map of the O / C specified by the area code from the client terminal 1; a link information registration table corresponding to the vector data of the O / C; Since the map data including the attribute data corresponding to the Ooji / Chome vector data is transmitted, the client terminal 1
CPU 2a receives the map data via the communication modem 2e (S421).

From the server terminal 1, vector data,
In the client terminal 2 that has received the link information registration table and the attribute data, the CPU 2a executes a map drawing processing routine shown in FIG.

In the map drawing process routine, the CP
Upon receiving the map data including the vector data, the link information registration table, and the attribute data from the server terminal 1 (S601), the U2a temporarily stores the map data in the main storage device 2b (S602).

The CPU 2a is connected to the main storage device 2
The vector data is read from b (S603). At this time, the CPU 2a extracts only vector data representing a road map from the vector data, and draws a road map of a predetermined area based on the extracted vector data (S604).

Subsequently, the CPU 2a displays the road map drawn in S604 on the display device 2c (S605). In step S605, the CPU 2a displays an attribute division list display request button together with the map image. When the display request button is clicked with the mouse 2f (S606), the attribute division list added to the vector data is displayed. Is extracted (S60
9) A window is displayed on the road map (S61).
0).

When a signal for designating a desired attribute section is input from the keyboard 2d or the mouse 2f (S6).
11), the CPU 2a accesses the link information registration table of the main storage device 2b, and reads the building or road code information from the link information registration table specified by the attribute section. Subsequently, the CPU 2a accesses the vector data stored in the main storage device 2b and reads out the vector data specified by the code information (S612).

The CPU 2a draws an image of a mark of a building belonging to the attribute section in accordance with the vector data read in S611, and
It is displayed on the road map displayed in c (S613).

When the attribute section is a national road, a prefectural road, an expressway, a toll road, or a road which is a route of a bus, etc., the vector data of the road belonging to the attribute section is used as in the case of the building. It reads out, changes the display color of the road displayed at the position specified by the vector data, and draws a bus stop mark.

Next, if the request for displaying the attribute section list is not input in S606 or the request for reducing or enlarging the map is input after the processing in S613 is completed (S607), the CPU 2a proceeds to S614. Then, a reduction / enlargement process is performed.

The reduction / enlargement processing is realized by executing a reduction / enlargement processing routine as shown in FIG. 7 by the CPU 2a. Then, in the reduction / enlargement processing routine, as shown in FIG. 7, when the CPU 2a inputs a reduction ratio or an enlargement ratio using the keyboard 2d or the mouse 2f (S701), the road currently displayed on the display device 2c at present is displayed. The attribute classification of the building and the building is temporarily stored in the main storage device 2b (S702).

Then, the CPU 2a calculates the scale of the map after reduction or enlargement from the scale of the map currently displayed and the reduction ratio or enlargement ratio input in S701 (S703).

Subsequently, the CPU 2 a
b, vector data representing a road map is extracted (S70).
4) The value of the vector data of the vector data is corrected according to the scale calculated in S703, and a new road map is drawn according to the corrected vector data (S7).
05).

Next, the CPU 2a operates in the main storage device 2b.
Thus, the attribute classification of the road or the building stored in S702 is read. Then, the CPU 2a accesses the link information registration table corresponding to the attribute section, reads out the code information of the road or the building, and then reads out the vector data of the building or the road specified by the code information from the vector data. . further,
The CPU 2a stores the value of the vector data in S703.
The new road or the building is drawn on the new road map according to the corrected vector data according to the scale calculated in step (S707).

Then, the CPU 2a displays the map drawn in S707 on the display device 2c (S708). Here, returning to FIG. 6, when a request for displaying attribute data of a predetermined building or road is input (S608), the CPU 2a proceeds to S615 and performs attribute data display processing.

The attribute data display processing is realized by the CPU 2a executing an attribute data display routine as shown in FIG. In the attribute data display routine, the CPU 2a displays the mark of the building or the road displayed on the display device 2c with the mouse 2f.
Is specified by double-clicking (S801),
The coordinates of the mark or the road are calculated (S80).
2).

Subsequently, the CPU 2a accesses the vector data in the main storage device 2b, determines the vector data corresponding to the coordinate values calculated in S802, and links information (link information in the link information registration table) from the vector data. Address and code information are extracted (S803).

Next, the CPU 2a accesses the link information registration table of the main storage device 2b and reads the address stored in the entry corresponding to the code information from the link information registration table (S804).

Then, the CPU 2a accesses the attribute data in the main storage device 2b and reads the attribute data stored at the address read in S804 (S80).
5). Further, the CPU 2a displays the attribute data read in S805 in a window on the map displayed on the display device 2c (S806).

Incidentally, if data for accessing a homepage of an individual public institution or store is added to the attribute data, and an access button to the homepage is displayed when the attribute data is displayed, the client can access the homepage. The homepage can be accessed on the map only by the user of the terminal designating the access button with a mouse or the like.

As described above, according to the map drawing system according to the present embodiment, the positional relationship between roads and buildings can be accurately represented by representing the outline of the map with vector data. Then, the vector data is provided from the server terminal to the client terminal, and the client terminal generates map image data in accordance with the vector data, so that the client terminal can cope with a map reduction process or an enlargement process.

Further, by linking vector data of a road or a building with attribute data of the road or a building, if an arbitrary road or a building displayed on the map is designated, the designated road or the building can be designated. Since the attribute data of the building can be displayed immediately, the trouble of performing information search by another search system can be omitted.

In this embodiment, an example in which attribute data is retrieved from a map has been described. However, it is also possible to retrieve a map from attribute data. For example, by inputting arbitrary attribute conditions such as “Hotel within 5 minutes on foot from XX station” or “Movie theater showing XX” on the client terminal 2, the attribute It is also possible to search for attribute data that matches the conditions, then extract a map linked to the attribute data and send it to the client terminal 2.

[0066]

According to the map drawing system of the present invention, the positional relationship between roads and buildings can be accurately displayed by drawing a map image using vector data. Then, since the server transmits the map vector data to the client, and the client generates the map image data based on the vector data, even if the display scale of the map is changed, the processing can be performed on the client side. Can be speeded up.

Further, in the map drawing system, vector data of individual roads and individual buildings are associated with attribute data of individual roads and individual buildings, and these vector data and attribute data are transmitted from the client to the server. Therefore, if a road or a building on the map displayed on the client side is designated, the attribute data of the road or the building can be displayed. As a result, the user on the client side does not need to search for the attribute data using another search system, and the search process can be simplified.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic configuration of a map drawing system.

FIG. 2 is a diagram showing a configuration of a server terminal 1.

FIG. 3 is a diagram showing a configuration of a client terminal 2;

FIG. 4 is a flowchart showing a map search request processing routine executed by the client terminal 2;

FIG. 5 is a flowchart showing a map search processing routine executed by the server terminal 1;

FIG. 6 is a flowchart showing a map drawing processing routine executed by the client terminal 2;

FIG. 7 is a flowchart showing a reduction / enlargement processing routine executed by the client terminal 2;

FIG. 8 is a flowchart showing an attribute data display processing routine executed by the client terminal 2.

[Explanation of symbols]

 1. Server terminal 1a CPU 1b Main storage device (MM) 1c Map file 1d Attribute database 1e Communication modem 1f Router 2 Client terminal 2a CPU 2b Main Storage device (MM) 2c Display device 2d Keyboard 2e Communication modem 2f Mouse

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Kaori Ida 2-7-24 Nihonbashi, Chuo-ku, Tokyo Toyo Information System Co., Ltd.

Claims (4)

[Claims] 1. A map drawing system comprising a server and a client, wherein the server converts vector data specifying shapes of roads and buildings represented on a map and attribute data of the roads and buildings. Data storing means for storing the data in association with each other; data reading means for reading vector data and attribute data from the data storing means; and transmitting the vector data and attribute data read by the data reading means to the client. Data transmitting means, wherein the client receives vector data and attribute data transmitted from the server, and generates a map image based on the vector data received by the data receiving means. Map drawing means, and an image of a map generated by the map drawing means. Map display means for displaying a map, a designation means for designating a coordinate position of a predetermined road or building on a map displayed by the map display means, and the road or the road from the coordinate position designated by the designation means. Attribute data extracting means for specifying vector data of a building and extracting attribute data associated with the vector data; and attribute data displaying means for displaying the attribute data extracted by the attribute data extracting means. Map drawing system. 2. The apparatus according to claim 2, wherein the client further includes a magnification designating unit that designates a change in magnification of the map displayed by the map display unit, and the map drawing unit is configured to change the magnification according to the magnification designated by the magnification designating unit. 2. The map drawing system according to claim 1, wherein the vector data is corrected, and a map image is generated based on the corrected vector data. 3. Data receiving means for receiving vector data specifying the shapes of roads and buildings represented on a map and attribute data of each road or building, which are associated with each other, and said data Map drawing means for generating a map image of a desired scale based on the vector data received by the receiving means, map display means for displaying the map image generated by the map drawing means, and map display means Specifying means for specifying a predetermined road or building represented on a map displayed on a screen; and discriminating vector data of the road or the building from a coordinate position of the road or building specified by the specifying means. And an attribute data output means for outputting attribute data associated with the vector data. Reading the vector data and the attribute data from data storage means for storing vector data representing the position and shape of an object written on a map and attribute data of a predetermined object in association with each other; Generating a map image based on the vector data; displaying the map image on a screen; specifying a predetermined object written on the map displayed on the screen; A recording medium storing a software program, comprising: determining vector data of the object from a coordinate position, detecting attribute data associated with the vector data; and outputting the attribute data.