JPH0264818A - Display system for graphic display device - Google Patents

Abstract

PURPOSE:To reduce cost and to realize a precise graphic processing by providing plural operation means and plural storage means and mixing and displaying graphic information and image data. CONSTITUTION:When data received with an interface 11 is graphic information, the graphic information is once stored in a segment memory 13, read out, given to a computing element 14, graphic-processed and stored in a frame memory 23. When data received with the interface 11 is image data, the image data is once stored in a reflesh memory 21, read out, logical operation-processed by a computing element 22 and stored in the frame memory 23. Consequently, graphic information and image data can be mixed and displayed in CRT 18. Thus, cost can be reduced and the precise graphic processing can be realized.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a display method of a graphic display device as a man-machine interface means in a data processing device that handles map/drawing data and its attribute data in a unified manner. .

[Conventional technology]

BACKGROUND ART Conventionally, in this type of data processing apparatus, when performing geographic information processing or drawing processing, a request to display these data as graphic or image data has been an essential function. In this case, map data and drawing data are often input as image data and processed together with graphic data in order to reduce the cost of data input and to facilitate the input work.

FIG. 2 is a block diagram showing the configuration of a display method of a conventional graph ink display device. In the figure, this graphic display device IB has an interface 11 as an input/output means that controls a data interface with a CPU 3 included in a data processing device, and receives data from this interface 11 to control the entire graphic display device 1B. CPU 12 that performs
A segment memory 13 as a first storage means for storing vector information sent from U3, a cursor generator 16 for generating a cross-shaped mark on the screen of CRT 18 as a display means, and vector information sent from CPU 3. The CRT 18 has a character generator 17 that generates characters on the CRT 18 based on the code/character data obtained. In addition, the graphic display device IB reads vector information data from the seven memory 13 and performs matrix multiplication, flip perspective transformation, function processing such as circle, ellipse, and color filling, coordinate transformation, and hector data necessary for graphic processing. The first to perform the occurrence
a computing unit 14 as a computing unit; a frame memory 23 serving as a second storage unit for storing the computing results of the computing unit 14; and a display controller 1 that reads out data in the frame memory 23 and displays it on the CRT 18.
5.

TAB in the figure is tabulation, which indicates a part of the software processing of this device IB.

Next, the main operations of this conventional display method will be explained. Data sent as vector information (information indicating line length, direction, color, etc.) from the CPU 3 included in the data processing device is stored in the segment memory 13, which is a stacked memory.

This stored data is sent to the arithmetic unit 14 and subjected to calculations necessary for graphic processing, and the results of the calculation are converted as graphic data and stored in the frame memory 23 in the form of image data. This image data is read out from the frame memory 23 under the control of the display controller 15 and displayed on the CRT 18.

[Problem to be solved by the invention]

The display methods of conventional graphic display devices perform the processing described above, so they can only display graphic data, codes, and character data, and map and drawing data must be converted into vector information at the input stage. Furthermore, parallel and simultaneous processing of vector information and image information has been impossible. Therefore, conventional display methods require software and input operations to convert map and drawing data into vectors at the input stage, which tends to increase costs, and also requires parallel processing of vector information and image information. Since this is impossible, there is a problem in that it is difficult to realize highly accurate graphic processing.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a display method for a graphic display device that can reduce costs and realize highly accurate graphic processing.

[Means to solve the problem]

The display method of the graphic display device according to the present invention includes a third storage means (refresh memory 21) for storing image data received by the input/output means (interface 11), and data stored in the third storage means. A second arithmetic means (operator 22) that reads out and performs a logical operation is provided, and an input/output means (interface 11)
When the received data is graphic information, the graphic information is first stored in the first storage means (segment memory 13), then read out and processed by the first calculation means (calculator 14). Storage means of rear cylinder 2 (frame memory 2
3), and input/output means (interface 11
) receives image data, the image data is first stored in the third storage means (refresh memory 21), then read out and processed by the second arithmetic means (arithmetic unit 22). The memory means of the rear cylinder 2 (
The display unit (CRTlB) stores the graphic information and image data in the frame memory 23).
This feature is characterized by displaying the following information.

[Effect]

In this display method, input/output means (interface 1
If the data received by 1) is graphic information, the graphic information is first stored in the first storage means (segment memory 13), then read out and sent to the first calculation means (calculation unit 14). is given, subjected to graphical processing, and stored in the second storage means (frame memory 23). Further, when the data received by the input/output means (interface 11) is image data, the image data is first stored in the third storage means (refresh memory 21), and then read out and used for the second calculation. The means (calculating unit 22) performs logical operation processing, and the second storage means (frame memory 2)
3). Therefore, the display means (CRTlB
) can display a mixture of graphic information and image data.

[Embodiments of the invention]

FIG. 1 is a block diagram showing the configuration of a display system of a graphic display device according to an embodiment of the present invention. In FIG. 1, components corresponding to those shown in FIG. 2 are designated by the same reference numerals, and their explanations will be omitted. In FIG. 1, IA is the graphic display device of this embodiment.

21 is a refresh memory as a third storage means for storing image data received from the interface 11, and 22 is an arithmetic unit as a second calculation means for reading out the data stored in the refresh memory 21 and performing a logical operation. . That is, the refresh memory 21
When image data is sent from 3 through the interface 11, the data is stored intermediately through processing by the CPU 12. The arithmetic unit 22 performs logical operations on the image data in the refresh memory 21 based on instructions from the CPU 12.

Next, the operation will be explained. Map data and graphic data inputted from the interface 11 are processed by the CPU 3 in the form of vector information, code information, and image information, and are displayed on the CRTlB. In this case, the application software on the CPUa passes graphic information to be displayed to the graphic library software in the same way as in the past. The Graphink library software adds information necessary for the device 2 to operate to this information, and sends the information to the graphic display device IA.
The PU 12 interprets the information as graphic information, temporarily stores the graphic information in the segment memo IJ 13, and issues operation commands to each subsystem.

On the other hand, if the data sent from the CPU 3 is image data, the CPU 12 temporarily stores the image data in the refresh memory 21 and sends it to the arithmetic unit 22.
issue instructions to. The arithmetic unit 14 and the arithmetic unit 22 are the CPU 12
Performs processing upon receiving instructions from. That is, the arithmetic unit 14 reads data from the segment memory 13, performs the various processes described above, and stores the results in the frame memory 23. The arithmetic unit 22 reads image data from the refresh memory 21, performs various logical operations, and stores the results in the frame memory 23. At this time, the address control of the frame memory 23 is performed by the arithmetic unit 14 and the arithmetic unit 22 exchanging information with each other in response to instructions from the CPU 12. The data in the frame memory 23 is
It is read out under the control of the display controller 15.

The display controller 15 performs color assignment, address control, and overlay control for displaying the data on the screen of the CRTlB, and displays the data in the frame memory 23 on the CRTlB.

On the other hand, conversely, the application software on CPUa is
If it is desired to read the data displayed above, the application software issues a command to the CPU 12 and can read the data in the frame memory 23 via the interface 11.

〔Effect of the invention〕

As described above, according to the present invention, when the data received by the input/output means is graphic information, the graphic information is temporarily stored in the first storage means, and then read out and processed by the first calculation means. After processing, the data is stored in the storage means of the cylinder 2, and if the data received by the input/output means is image data, the image data is temporarily stored in the third storage means, and then read out and used for the second calculation. Since the processed data is stored in the storage means of the rear cylinder 2, there is no need for software or manual operations to vectorize map and drawing data at the input stage, which is required in the past. It is possible to reduce the cost of the apparatus, and also to perform parallel simultaneous processing in which graphic information and image data are mixed and displayed on the display means, and it is possible to realize highly accurate graph ink processing.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the structure of a display method of a graphic display gW according to an embodiment of the present invention, and FIG. 2 is a block diagram showing the structure of a display method of a conventional graph ink display device. IA...Graphic display device, 11...
Interface (input/output means), 13... Segment memory (first storage means), 14... Arithmetic unit (first
calculation means), 18-9・CRT (display means), 21
...Refresh memory (third storage means), 22
. . . arithmetic unit (second arithmetic means), 23 . . . frame memory (second storage means).

Claims (1)

[Claims] an input/output means for inputting and outputting data to and from the outside; a first storage means for storing vector information received by the input/output means; and a calculation necessary for graphic processing based on the data from the input/output means. a first calculation means; a second storage means for storing calculation results of the first calculation means;
a third storage means for storing image data received by the input/output means; and a third storage means for storing image data received by the input/output means; and a second calculation means for reading data stored in the storage means and performing a logical operation on the data stored in the input/output means, and when the data received by the input/output means is graphical information, the graphical information is temporarily stored in the first storage means. , the data is then read out and processed by the first calculation means, and then stored in the second storage means, and if the data received by the input/output means is image data, the image data is stored in the second storage means. 3, and then read out and processed by the second calculation means, and then stored in the second storage means,
A display method for a graphic display device, characterized in that graphic information and image data are mixed and displayed on the display means.