JPS63201689A - Map display device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Industrial Application Field The present invention is applied to, for example, an administrative management system, in which a map of a predetermined area managed by a host computer is displayed on a graphic CRT (Cathode RayTub) on the terminal side.
e) It relates to a map display device that is displayed on a display device.

B3 Summary of the Invention The present invention provides a map display device that manages map information combining buildings and maps in a host computer and displays the map information sent from the host computer on a graphic CRT display device on the terminal side. Map information is constructed into a predetermined segment structure within a CRT display device and then stored in a storage section of a host computer, and when a display request is made, the display is performed based on the map information of the segment structure stored in the storage section. By doing so, it is possible to speed up the map information display work by omitting the effort of constructing segments of map information at the time of display request, and thereby, for example, to facilitate administrative management work.

C1 Prior Art Recently, graphic CRT display devices have been attracting attention as terminal devices for online systems because they allow processed information to be recognized and judged visually.

For example, in a centralized monitoring and control system for disaster prevention, etc., the second
As shown in the figure, a host computer l corresponding to a master station collects various information from slave stations in real time, stores processed graphic information in an auxiliary storage device 1a such as a magnetic disk, and displays it on a graphic CRT display device. The graphical information in the range required from 2 is transmitted to this through a communication line.

On the other hand, in the graphic CRT display device 2, the microprocessor 3 constructs the transmitted graphical information into a predetermined segment structure and stores it in a segment buffer 4 corresponding to a storage section. Then, the graphic processor 5 cuts out the graphic information in the range required for display from the graphic information in the segment buffer 4, develops bits in the corresponding position on the frame buffer 6, and writes a digital image.

The frame buffer 6 is physically a memory that has bits corresponding to each pixel on the screen of the CRT monitor 7 in a 1:1 ratio, and for color display, it has multiple bit brains and uses a lookup table (not shown). The display color is determined. For example, in the case of six frame buffers (consisting of three bit brains #l to #3, the on/off of bits corresponding to graphic information is developed as a combination of bit brains #1 to #3. 7 is displayed on the screen by raster scanning the frame buffer 6 and using the combination value of the bits on of each bit brain #1 to #3 as an address in accordance with the display color table defined in the lookup table. (red), G (green), B
(blue) beam output to the CRT monitor 7.

The above-described system can be applied, for example, to an administrative management system of a local government, and can thereby be expected to speed up and facilitate administrative work.

By the way, when applied to an administrative management system, a database for residential maps requires map information and attribute information such as building addresses and telephone numbers for management or maintenance purposes, and map information for display purposes. These management map information and display map information are dually managed in the host computer 1 in the same data format.

D5 Problems to be Solved by the Invention The above map display system uses data formats and graphic CRTs managed by a host computer.
Because the data format of the storage section of the display device is different,
There has been a problem in that it takes a very long time from when a display request is made until the image is actually displayed on the CRT. That is, the second
In the figure, the auxiliary storage device 1a of the host computer I stores map information for management, attribute information, and map information for display in the form of a command string. Therefore, when requesting to display map information, the map information for display transmitted from the host computer l in a command sequence is transferred to the segment buffer 4.
It is necessary to construct data in a segment structure. This segment construction work takes a very long time, so it has been difficult to display the map at high speed when a display request is made.

The present invention has been made in view of the above points, and an object of the present invention is to provide a map display device that can display a map at high speed when a display request is made.

Means for Solving the E0 Problem The present invention provides a graphic CRT on the terminal side of a host computer that manages map information combining buildings and maps.
A map display device that is connected to a display device and displays map information within an area specified by map information sent from a host computer stores map information for management and map information for display. a storage unit of a host computer; and a calculation of a CRT display device that takes in map information for display stored in the storage unit of the host computer, constructs it into a predetermined segment structure, and registers it in the storage unit of the CRT display device. a processing unit; and a calculation unit of the host computer that stores display map information registered in the storage unit of the CRT display device in the storage unit of the host computer in the same information format as the information, and displays the map information. The present invention is characterized in that, upon request, map information within a designated area is displayed based on segment-structured map information stored in the storage section of the host computer.

21 Action First, for example, the map information for display in the command string stored in the storage section of the host computer is read out, and the information is transferred to the CRT.
The display device's arithmetic processing unit changes the format to segment-structured map information.

Next, the format-changed map information of the segment structure is stored in the storage section of the host computer using the arithmetic section of the host computer. When a display request is made, the display map information having a segment structure stored in the storage section of the host computer is read out, and the map information within the designated area is displayed. Therefore, it is not necessary to construct segments when requesting display, so map information can be displayed at high speed. .

G. Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In FIG. 1, the same parts as in FIG. 2 are shown with the same reference numerals, and the explanation thereof will be omitted. Reference numeral 11 denotes an auxiliary storage device of the host computer I that can store map information in a segment-structured data format. The host computer 1 is provided with an arithmetic unit 12 that performs arithmetic processing and the like to store display map information of a segment structure, which is constructed into segments and stored in the segment buffer 4, in the auxiliary storage device 11.

In the apparatus configured as described above, the calculation unit 12 of the host computer 1 reads the display map information of the command string stored in the auxiliary storage device 11 and sends it to the graphic CRT display device 2 when there is no display request. Transmit. Then, the microprocessor 3 changes the format of the display map information of the transmitted command string, constructs it into a predetermined segment structure, and registers it in the segment buffer 4. Next, the calculation unit 12 reads out the display map information of the segment structure registered in the segment buffer 4 and stores it in the auxiliary storage device 11. By performing the above operations, the data format of the display map information stored in the auxiliary storage device 11 is changed in advance from a command string to a segment structure. Next, when a display request is made, the graphics processor 5 cuts out the map information in the range requested for display from the display map information in the segment structure stored in the auxiliary storage device 11, and places it in the corresponding position on the frame buffer 6. bit expansion and write the digital image. Then, by raster scanning the frame buffer 6, the map information of the range requested to be displayed is displayed on the screen of the CRT monitor 7. In this way, the map information for display is stored in advance in the auxiliary storage device 1 of the host computer l in the same data format as the segment buffer 4.
1, so when a display request is made, it can be displayed without time-consuming segment construction.

According to the above embodiment, the map information is stored in the segment buffer 4.
After building the auxiliary storage device 11 of the host computer
If the map information is stored on the host computer l side by repeating the storing operation several times, the storage capacity of the segment buffer 4 can be reduced.

H. Effects of the Invention As described above, according to the present invention, display map information having a segment structure registered in the storage unit of a graphic CRT display device is stored in advance in the storage unit of a host computer in the same information format as the information. Therefore, there is no need to construct segments of map information when a display request is made.
It saves you that hassle. Therefore, it is possible to speed up the map information display work, and thereby, for example, to facilitate administrative management work.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional example. l...Host computer, 2...Graphic C
RT display device, 3... microprocessor, 4...
Segment buffer, 5... Graphic processor, 6... Frame buffer, 7... CRT monitor,
11... Auxiliary storage device, 12... Arithmetic unit.

Claims (1)

[Scope of Claims] A graphic CRT display device is connected to the terminal side of a host computer that manages map information combining buildings and maps, and a graphic CRT display device is connected to the terminal side of a host computer that manages map information that combines buildings and maps, and displays information within a designated area based on map information sent from the host computer. A map display device for displaying map information, comprising: a storage unit of a host computer in which map information for management and map information for display are stored; and a storage unit for importing the map information for display stored in the storage unit of the host computer. an arithmetic processing unit of a CRT display device that constructs a predetermined segment structure in a predetermined segment structure and registers it in a storage unit of the CRT display device; an arithmetic unit of the host computer that stores the map information in the storage unit of the host computer in a format, and when requesting to display map information, the map information is stored in the storage unit of the host computer based on the segment-structured map information stored in the storage unit of the host computer; A map display device characterized by displaying map information within.