JPH083836B2 - Map display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention is applied to, for example, an administrative management system, and displays a map of a predetermined area managed by a host computer on a terminal side of a graphic CRT (Cathode Ray Tube) display device. The present invention relates to a map display device to be displayed on.

B. Outline of the Invention The present invention is a map display device that manages map information in which a building and a map are combined by a host computer, and displays the map information sent from here on a graphic CRT display device on the terminal side. Configures the figure data so that it is displayed as a polygonal closed figure, and searches attribute information such as addresses and telephone numbers for buildings and displays it in, for example, the corners of the screen to display a map of a predetermined area. At the same time, however, the address of the desired building can be viewed at the same time, which makes it possible to facilitate administrative management work, for example.

C. Conventional Technology Recently, as a terminal device of online system,
Graphic CRT display devices are attracting attention because they can visually recognize and judge processed information.

For example, in a centralized monitoring control system for disaster prevention, as shown in FIG. 5, a host computer 1 corresponding to a master station
Various information collected in real time from the child station, to keep the graphic information data processing in the auxiliary storage unit 1 _1, such as a magnetic disk, communication line graphic information of range required from Gurafuitsuku CRT display device 2 Is transmitted to this through.

On the other hand, in the graphic CRT display device 2, the transmitted graphic information is constructed into a predetermined segment structure by the microprocessor 3 and stored in the segment buffer 4 corresponding to a storage unit. Then, the graphic processor 5 cuts out the graphic information in the range required to be displayed with respect to the graphic information in the segment buffer 4, bit develops it at a corresponding position on the frame buffer 6, and writes a digital image.

The frame buffer 6 is a memory which physically has a bit corresponding to each pixel on the surface of the CRT monitor 7 in a one-to-one manner. In color display, it has a plurality of bit planes and a lookup table (not shown). The display color is determined by using it. For example, when the frame buffer 6 is composed of three bit planes # 1 to # 3, on / off of the bit corresponding to the graphic information is developed as a combination of bit planes # 1 to # 3. The display on the screen of the CRT monitor 7 is a raster color scan on the frame buffer 6, and a combination of bit-on of each bit-plane # 1 to # 3 is set as an address in the lookup color table. The beam output of R (red), G (green), and B (blue) according to the above is applied to the CRT monitor 7.

The system as described above can be applied to, for example, an administrative management system of a local public entity, which can be expected to speed up and facilitate administrative work. By the way, when it is applied to an administrative management system, it is often convenient to display the address and telephone number of each building or the family structure of the resident and the attribute information at the same time when the house map is displayed.

D. Problems to be Solved by the Invention In the past, when the above-mentioned attribute information was displayed for each building, it had never been done. The reason for this is that the data for each figure in the map information was created so that it would be displayed as a vector, so the building was drawn by joining multiple vectors, and when it was taken into account each building This is because it is impossible to think of creating and displaying attribute information corresponding to each building.

When the map information is stored in the segment buffer, if the attribute information is included in the segment structure of each graphic, it is possible to display the attribute information in the vicinity of the building together with the building. However, in such a method, since the attribute information is displayed at the same time for all buildings, the screen becomes difficult to see if the amount of information is increased, and it is impossible to display / delete only the attribute information due to the segment structure. There are drawbacks.

An object of the present invention is to provide a convenient map display device capable of simultaneously displaying attribute information of an arbitrary building while displaying a map of a predetermined area.

E. Means for Solving Problems In the present invention, graphic data is created so that a building is displayed by a closed polygonal figure, and the graphic data of each building is indexed so that it can be stored in the storage unit of the host computer. Store the attribute information of each building separately from the map information in the data of each attribute information,
The index of the corresponding building is attached, and the attribute information of the building is retrieved from the storage unit of the host computer by associating the index of the building and the attribute information with the display instruction of the attribute information of the specified building. A search unit to be sent to the graphic CRT display device and a multi-viewport function unit for setting the display window on the screen according to the display command and displaying the attribute information therein are provided.

F. Action For example, a map of a predetermined area and a building are graphical CRT
It is supposed to be displayed on the screen of the display device. When the operator designates a specific building and displays the attribute information about it, a display window is set in the corner of the screen, for example, and the address of the specified building is displayed. . After that, when the operator gives a deletion instruction, the display window and the attribute information are deleted, and the original map information is displayed.

G. Embodiment FIG. 1 is a block diagram showing an embodiment of the present invention, in which the same symbols as in FIG. 5 indicate the same or corresponding portions. In this example, for buildings of the map information stored in the auxiliary storage unit 1 ₁ of the host computer side, thereby creating a graphic data to display the polygon of the closed figure, the graphic data of each building An index, such as a number, is added to identify the building. And said separate attribute information of the building and graphic information in the auxiliary storage unit 1 _1,
For example, an address, a telephone number, etc. are stored, and the same number as the corresponding building number is attached to the data of each attribute information.

Here, in order to store the map of the predetermined area in the segment buffer 4, usually one map is divided into a plurality of meshes due to the capacity limitation, and the host computer side for each map information corresponding to each mesh. The map information of one mesh is stored in the segment buffer 4. In such a case, for a building that extends over a plurality of meshes, a part of the building is displayed at the edge of each mesh. By the way, when the building is polygonized as described above, even a part of the building is displayed as a closed figure. When This state is shown in FIG. 2, two mesh screen M _1, building a have One straddle the M ₂ are mesh screen M _1, each of two closed figures a ₁ in M _2,
Displayed as a ₂ . However, in such a display method, a portion that originally corresponds to a part of the building (so-called unfinished building) is recognized as the entire building on the screen. Therefore, in this embodiment, the buildings (second
In the Figure the operator displays the background color沿Tsuta line the edge of the mesh screen of equivalent to a _1, a _2).

Next, FIG. 3 shows an example of graphic data processing for a building. For example, the auxiliary storage unit on the host computer side
If the 1 ₁ storing house map, first determines whether or not fall within 1 mesh screen for each building, if the fit is given the number and polygons of the building. If it does not fit within one mesh, the building is polygonized, the flag of the unfinished building is set, and graphic data is created so that the color of the line along the edge of the mesh becomes the background color. If there are buildings that have already been flagged as unfinished buildings, those buildings having the same coordinates as those of the buildings are given the same number. For example, in the example of FIG. 2, the unfinished buildings a ₁ and a ₂ have the same coordinates on the upper right side and the upper left side, respectively, and are therefore assigned the same numbers.

Furthermore as the components of this embodiment, with the host computer 1 searches portion 1 ₂ is provided, a multi Biyu port function part 5 ₁ it is provided in the graphic pro-broken 5.
The search section 1 ₂ has a function of searching the attribute information of the building which is selected in correspondence to the number of buildings and attribute information and multi Biyu port function unit 5 ₁ sets the display window on the screen Has a function of displaying attribute information.

Next, the operation of the above embodiment will be described. It is now assumed that the residential land map of the area on the CRT monitor 7 of the graphic CRT display device 2 is displayed. Here, if the operator specifies the building with the screen issues a command to display the attribute information, the searching portion 1 ₂ of the host computer 1 have the same number and number in the graphic data are assigned to the building attributes The information is retrieved from the auxiliary storage unit 1 ₁ and the graphic CRT
Send to the display device 2. And multi view port function section 5 ₁
Thus, a display window is set at the corner of the screen, and the sent attribute information is displayed therein. FIG. 4 is a diagram showing an example of displaying attribute information in the display window W for the building A. After that, when the operator issues a command to delete the attribute information,
Multi-Biyu attribute information on'll go-between screen to the port function section 5 ₁ is erased, the original map information is displayed.

H. Effect of the Invention According to the present invention as described above, since the building is displayed by a polygonal closed figure,
An index for identifying a building can be attached, so that attribute information of each building can be created separately and the building can be associated with the attribute information through the index. Therefore, by using the multi-viewport function, for example, it is possible to display the attribute information for any building on the screen in the display window as needed while displaying the residential land map, which allows, for example, administrative management work. It can be done smoothly and efficiently.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of the present invention, FIG. 2 is an explanatory diagram showing a display state of a building straddling two meshes, and FIG. 3 is a flow chart diagram showing a part of graphic data processing. ,
FIG. 4 is an explanatory diagram showing an example of a screen, and FIG. 5 is a configuration diagram showing a conventional example. 1 ... Host computer, 1 ₂ ... Search unit, 2 ... Graphic CRT display device, 3 ... Microprocessor, 4 ... Segment buffer, 5 ... Graphic processor, 5 ₁ ... Multiview port function unit, 6 ... Frame pattern Hua, 7 ... CR
T monitor.

Claims (1)

[Claims] 1. A graphic CRT is provided on a terminal side of a host computer which manages map information in which a building and a map are combined.
A map display device that is connected to a display device, stores the map information sent from the host computer in the storage unit of the graphic CRT display device, and displays the map information in the area specified for the stored map information. In, in the host computer, it is judged whether each building stored in the storage unit fits within one mesh, and if it fits, create the polygonal graphic data of that building and add the index. If it does not fit within one mesh, the building is polygonized and the unfinished building is flagged to create graphic data so that the color of the line along the edge of the mesh becomes the background color, and it is already incomplete. If there is a building flagged as a building, a map that has the same index as that of the building and has the same index among them and is stored The attribute information of each building is stored separately from the information, and the means of adding the index of the corresponding building to the data of each attribute information and the command to display the attribute information of the specified building Also, a search unit is provided for associating each index of the attribute information with the corresponding attribute information of the building from the storage unit of the host computer and sending it to the graphic CRT display device. The display window is set on the existing screen to display the attribute information sent from the search unit in this window, and the attribute information deletion command deletes the attribute information from the screen and displays the original map information. A map display device having a multi-viewport function unit for