JPH0782502B2 - Map management processor - Google Patents

Description

DETAILED DESCRIPTION [Outline] A drawing management processing method for facilitating access to a map drawing.

The map is divided into certain rectangular map drawing files for management, and a map management file is created that registers the correspondence between the area names and the drawing files that make up the rectangular area map that includes the area. Allows you to identify drawing files in.

This processing method makes it easy for the user to access the necessary map drawing.

[Industrial application field]

The present invention relates to a map management processing device for managing map drawings in an information processing system.

[Prior Art] FIG. 3 is a block diagram showing a configuration example of an information processing system.

The processing device 1 receives a request from, for example, the terminal device 2 and processes it to read a required drawing from the map drawing information stored in the storage device 3 such as a magnetic disk storage device, and the terminal device 2 Output to.

The information of the map drawing is composed of the starting point and the ending point coordinate value of the figure representing the map and the attribute data of the line type, line width, color, etc. of the line segment, for example, a drawing showing a rectangular drawing of a certain shape. It is divided into files 4 and stored in the storage device 3 as ordinary so-called files.

When a large amount of data is required, all map drawing information is stored in, for example, a magnetic tape storage device, and a drawing file that needs to be accessed is transferred to the storage device 3 for use.

In order to process the access to the file stored in the storage device 3, when the access control unit 5 of the processing device 1 receives the designation of the file name from the application processing unit 6 or the like which is the access request source, the designation of the file The data block is read from the storage device 3 and passed to the request source, and the request source performs the required processing for each logical record.

Similarly, when the drawing file 4 is accessed, the application processing unit 6 reads the drawing file as described above according to the file name of the drawing file requested from the terminal device 2, performs predetermined processing, and outputs the drawing file to the terminal device 2. To do.

[Problems to be solved by the invention]

In order to access the file as described above, it is necessary to specify the file name.

Therefore, when accessing a map drawing, when it becomes necessary to access a certain area on the map, the user of the terminal device 2 or the like uses the file name of the drawing file of the map drawing including the area as an appropriate index. It is necessary to search the table and the like and notify the application processing unit 6 of the file name obtained as a result.

In addition, depending on the size and position of the area, it is often necessary to access two or more drawing information files to access one area, and these file names must be searched individually.

As described above, there is a problem that the access operation to the map drawing information becomes relatively complicated.

[Means for solving problems]

 FIG. 1 is a block diagram showing the configuration of the present invention.

In the figure, 1 is a processing device, 2 is a terminal device, 3 is a storage device for storing a drawing file 4 of map drawing information and a map management file 10, 5 of the processing device 1 is an access control unit, and 11 is an application processing unit. , 12 are map management processing units that receive a region name from the application processing unit, determine a drawing file of a map of the region from the map management file 10 and notify the application processing unit 11 of the drawing file.

In the map management file, the file name and the configuration of the map drawing of the rectangular area to be accessed by the area name are registered for each required area name.

[Action]

When accessing the map drawing information, the user notifies the application processing unit 11 of the area name of the area to be accessed.

The application processing unit 11 assigns the area name to the map management processing unit.
Pass to 12 to request access.

The map management processing unit 12 accesses the map management file 10 stored in the storage device 3, knows the drawing file forming the map of the rectangular area including the designated area, and responds to the application processing unit 11.

The application processing unit 11 requests access to the access control unit 5 by the file name notified from the map management processing unit 12.

The map management file 10 divides the entire map into rectangular maps of a certain shape and calls each unit map, and divides into a drawing file consisting of the drawing information of the unit map and manages each required area. Instructing the drawing file of the unit map group, which defines that the map drawing of the rectangular area including all the area corresponding to the area name of is defined by the unit map group including one or more unit maps. And the identification information for designating the drawing file of each unit map which does not have an area included in the area in the unit map group, and is indexed by area name. , And is configured to obtain information indicating a file name and a configuration of a map drawing including the area.

According to this method, the user can access the required map drawing information only by designating the necessary area name and without knowing the file name.

〔Example〕

When accessing the map drawing information, the user notifies the application processing unit 11 of the area name of the area to be accessed.

The application processing unit 11 assigns the area name to the map management processing unit.
Pass to 12 to request access.

The map management processing unit 12 accesses the map management file 10 held in the storage device 3 in order to know the drawing file necessary for constructing the map including the designated area.

The map management file 10 has the following structure, for example.

FIG. 2 (a) shows an example of the structure of a map drawing, for example, a map of a city "XX" consisting of "East Ward", "North Ward", and "West Ward", and a map drawing covering this XX. An example is shown in which the information is divided and held in each drawing file of a rectangular area map indicated by numbers (-) (these are referred to as unit maps).

The drawing information stored in each drawing file consists of line segment information approximating a figure representing a map of each area. Usually, as described above, the origin and end coordinate values of each line segment and the line segment line A polygonal line consisting of attribute data such as type, line width, color, etc.
1 Attribute data and each vertex of the polygonal line (start point-midway point --------
-Middle point-End point)
The amount of data in the drawing file can be reduced. In this case, the polygonal closed polygonal line is represented by designating the same coordinate value at the starting point and the ending point.

A map management file 10 having the contents conceptually shown in FIG. 2B is created for the map drawing of FIG.

Here, section XX indicates that the map of city XX is covered by "(,)" by a rectangular map with the drawing file in the upper left corner and the drawing file in the lower right corner. The following areas are also shown in the same display format.

In the "Control information" part of the XX section, the connection configuration of the drawing files of ~ consists of 6 horizontal x 4 vertical planes, and the actual vertical and horizontal distances of the area represented by each plane. Common control information is shown.

As shown in the figure below, west, north, and east wards are linked under XX, and towns within the ward are linked to each ward. The structure of the drawing file forming the map of the rectangular area covering the area is shown in the above manner.

As in the case of Nishi-ku, Kitayuki-cho, etc., the drawing file number defined following the definition of the upper left and lower right corner drawing files in a rectangular area indicates an unnecessary drawing file. A rectangular map that covers the map is defined in the drawing file ~, ~, ~
It is a rectangle consisting of 15 unit maps of, but the drawing file and and does not include the Nishi Ward.

Therefore, depending on the processing purpose, it may be possible to determine based on this information that it may not be necessary to output this portion to the terminal device 2.

The file name of each drawing file, which is determined by, can be obtained by a correspondence table provided separately.

The map management file 10 also stores information for other regions YY, ZZ ----, which are not shown, in the same format as the example of the XX region.

The map management processing unit 12 searches the map management file 10 by a designated area name (for example, "Yamada Town, Nishi-ku, XX City"), and is a file of a drawing file of a rectangular area map necessary to cover the area map. The name is obtained and notified to the requesting application processing unit 11 together with the control information and the like.

The application processing unit 11 requests the access control unit 5 to access the required drawing file based on the file name notified from the map management processing unit 12.

〔The invention's effect〕

As is clear from the above description, according to the present invention, in the information processing system, since the user can access the map drawing information by designating the area name, the operation of using the map drawing can be made extremely easy. Also, in order to specify the necessary drawing file group, it is only necessary to specify the rectangular area determined by the area, so it is possible to specify with a small amount of information, and only the drawing file of the map that strictly includes the required area depending on the use of the map etc. If you want to take out an unneeded drawing file, you can easily remove unnecessary drawing files from the rectangular area.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of the present invention, FIG. 2 is an explanatory diagram of a map management file, and FIG. 3 is a block diagram of a conventional configuration example. In the figure, 1 is a processing device, 2 is a terminal device, 3 is a storage device, 4 is a drawing file, 5 is an access control unit, 6 and 11 are application processing units, 10 is a map management file, and 12 is a map management processing unit. Show.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masami Takahashi 1-2356 Take, Yokosuka City, Kanagawa, Japan Information and Communication Processing Laboratory, Nippon Telegraph and Telephone Corporation (56) Reference Japanese Patent Laid-Open No. 61-7977 (JP, A)

Claims (1)

[Claims] 1. The map drawing information is divided into a drawing file (4) consisting of drawing information of a unit map of a fixed shape, and managed.
A map management processing device that outputs the drawing information according to request information, and configures a unit map group including one or more unit maps that include all the areas in correspondence with the area name of each required area. A management file (10) defining identification information designating the drawing file and identification information designating the drawing file of each unit map having no area included in the area in the unit map group; A means (12) for outputting the identification information of the drawing file necessary for constructing the required map drawing by searching the management file (10) by the area name specified in the request information. Characteristic map management processing device.