JPH02273871A - Image display processor - Google Patents

Abstract

PURPOSE:To execute the display at a high speed by placing a fixed picture displayed repeatedly in a main memory by an interpreter before starting a user program. CONSTITUTION:As for a fixed picture, it is brought to coordinate calculation and stored in a main memory as a segment of a shape converted to an H/W command which has information of an absolute coordinate and can be understood by a graphic controller 4. Subsequently, in the case a fixed coordinate segment display request comes by a user program, it is transferred to the graphic controller 4 without executing a conversion work of the coordinate, and the graphic controller 4 decodes it, drawns it in a frame memory 3 and displays it on a display 5. In such a way, the time for the coordinate calculation and the generation of the H/W command is not required, and by that portion, the display can be executed at a high speed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image display processing device that has a main memory and a frame memory and displays the contents of the frame memory on a display.

[Conventional technology]

FIG. 2 is a block diagram showing the configuration of a system to which a conventional image display processing device is applied, as shown in the specification and drawings attached to Japanese Patent Application Laid-Open No. 62-49535.

In the figure, (1) represents central processing f7Nffi, (2
) is main memory, (3) is frame memory, (4) is graphic controller) 1: I-RA, (5) Hf display,
(6) is the system path. Normally, when displaying graphic elements such as squares and circles in a user program, the standard graphic 87W is used. Here it is Engineering S.

An example using the international standard GK8 will be shown, and the definition of a segment in GK8 will be explained. In the GK8, a figure or a partial figure that is to be displayed many times can be stored in the main memory (2) by defining an H segment 11. This segment is not in the form of so-called absolute coordinates where the coordinates are fixed so that it is displayed at a fixed location on the CR'l' screen,
It is written in relative coordinates that can be converted, and is a collection of display commands such as "draw a line" or "draw a circle", and commands such as "draw a line anywhere on the screen". It has not become. Segment definition and display 7a- is shown in the flowchart in Figure 3. For example, if we consider a diagram of a house to be one segment, first, we will use "Segment Definition 5TART
J, ``Draw a diagonal line'' twice, ``Draw a rectangle,'' ``Draw a circle,'' ``Segment definition END J'' and store in the main mesori (2) (BTEPL).

Thereafter, when a user program requests display of this segment, the coordinates to be displayed here are given.

The central processing unit (1) stores the segment in main memory (2)
Called from 8TEP2), using the nine coordinates given at the time of display request, converts relative coordinates to absolute coordinates for each command and decides where to display on the screen (BTEP3
), then generate a ■/W command that the graphics controller (4) can understand5TEP4), write the H/W command to the graphic controller (4) via the system path (6)8TEP5), and then process all instructions. It is checked whether the instruction has been completed, and if NO, this operation is returned to all instruction lines (8TEP6).

Graphics controller (4) that received H/W command
) decodes the H/W command (5TEP'7), draws a figure in the frame memory (3) (8TEP8), and displays it on the display (5) (8TEP9).

[Problem to be solved by the invention]

Conventional image display processing devices are configured as described above, so when a display request is made in which the location ril (coordinates) to be displayed on the display is always the same, the absolute coordinates displayed are fixed. If the figure c (hereinafter referred to as a fixed image) is also defined as a segment, it will be described using relative coordinates.

Therefore, every time a user program requests segment display, even if the absolute coordinates to be displayed are known, it is necessary to convert relative to absolute coordinates and generate a H/W command. There was a problem in that the display processing from request to display took a long time.

This invention was made in order to solve the above-mentioned problems, and for fixed images, when a display request is rarely made by a user program, a segment of a special shape can be written immediately to a graphic controller without coordinate conversion work. An object of the present invention is to obtain an image display processing device in which the image data is stored in the main memory (2).

[Means to solve the problem]

The image display processing device according to the present invention calculates the coordinates of a fixed image, has absolute coordinate information, and converts it into a H/W command that can be understood by a graphic controller. For example, when a fixed coordinate segment display request is received in a user program, the request is transferred to the graphics controller without coordinate conversion, and the graphics controller decodes this, draws it in frame memory, and displays it on the display.

The image display escape device according to the present invention stores a fixed image as a fixed coordinate segment in the main memory, so when a fixed coordinate segment display request is issued in the user program, the fixed coordinate segment is immediately displayed on the graphics controller. Forward. Since the fixed coordinate segment is a group of H/W commands, the graphics controller decodes this and displays it. Therefore, it does not take much time to calculate coordinates or generate H/W commands, and accordingly, high-speed display is possible.

〔Example〕

An embodiment of the present invention will be described below.

Here, the block diagram shown in FIG. 2 also applies to the #J's display processing device of the present invention.

# for operation! This will be explained with reference to the 70-chart in FIG. Users can define fixed images as segments.
EPII), after converting the segment instructions one by one from relative coordinates to absolute coordinates in the central processing unit (1) (5T
EP12), convert it into H/W commands that the graphic controller (4) can understand ('5TEP13) o
After that, check if the coordinate transformation of all commands is completed.5TEP14) If NO, 5TEP12, 13
Repeat. If YES, make the segment a fixed coordinate segment and place it in the main memo IJ (2) (S
TEP15). After creating a fixed coordinate segment, when there is a fixed coordinate segment display request in the user program, the central processing unit (1) reads the fixed coordinate segment from the main memory. 5rEpxa input Checks whether the segment is a fixed coordinate segment. Shiku'8'I'E
P17), if YES, the data is written to the graphic controller (4) without any conversion work (STEP 18).

If No, perform steps 5TEP3 to 5 of the conventional flow. H
Graphics controller that received the /W command (4)
decodes the H/W command (BTEP 19), draws a figure in the frame memory (3) (STEP 20), and displays it on the display (5) (8TEP 21).

〔Effect of the invention〕

As described above, the present invention converts a fixed image that is repeatedly displayed into a fixed coordinate segment into a H/W command whose coordinates have been calculated by an interpreter before starting a user program and stores it in the main memory (2). For fixed images, coordinate calculation and
There is no need to generate H/W commands, and there is an advantage that high-speed display is possible.

[Brief explanation of drawings]

FIG. 1 is a flowchart showing the flow of processing when displaying a fixed coordinate segment of an image display processing device according to an embodiment of the present invention, and FIG. 2 shows a form to which the present invention and a conventional image display processing device are applied. Block diagram showing the configuration of the third
The figure is a flowchart showing the flow of processing when displaying a conventional segment. (1) is the central processing unit, (2) is the main memory, (3)
is the frame memory, (4) is the graphics controller, (5) is the display, and (6) is the system path.
b. In addition, the same symbols in the figures indicate the same or equivalent parts.

Claims (1)

[Scope of Claims] A H/W configuration including a central processing unit, a main memory, a graphic controller, a frame memory, and a display, in which a user program stored in the main memory is understood by the graphic controller using an interpreter that controls graphic processing. The graphics controller decodes this H/W command, draws an image in the frame memory, and displays this image on the display. 1) Means for converting relative coordinates into absolute coordinates for a predetermined figure (2) Means for converting figure information converted into absolute coordinates into H/W commands (3) Means for converting figure information into H/W commands The predetermined figure is stored in the main memory using a means for storing information in the main memory, and when a user program is executed, if there is a command to display the predetermined figure in the user program to be executed, the predetermined figure is stored in the main memory. An image display processing device characterized in that the predetermined graphic information is called up and displayed on the display.