JPH0277795A - Display controller - Google Patents

Abstract

PURPOSE:To shorten a display processing time and to improve operability by controlling an image memory editing part and a display output part independently and outputting screen data by a user at a time. CONSTITUTION:When display instructions 26 and image plane output instructions 29 which are stored in a user program part 25 are supplied, they are supplied to the image memory editing part 19 and display output part 21 and image data are developed on an image memory 18 as many times as the number of the instructions 26. Here, the developed image data are supplied from an image plane 0 to an image plane (n), but the image plane 0 is still displayed on a display device 20. For the purpose, a small input instruction 31 is supplied to a keyboard input part 23, which is actuated; and a display output part 21 is actuated to develop the image data from the image plane 0 to the image plane (n). Thus, the output to the display device needs to be performed only one for a small input instruction of the user program and the operability is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a display control device for displaying screen data on a display device.

[Conventional technology]

The amount of data for graphics and image information is enormous compared to general data processing, and the processing contents and objects are complex and diverse. On the other hand, the current situation is that graphic and image processing techniques are rapidly being put into practical use and popularized as microcomputers and memories have become more sophisticated, cheaper, and have larger capacities. FIG. 4 shows an example of this type of image processing system. The image memory 11 shown in the figure has come into practical use as frame memories for images have become popular.

In addition, the microcomputer or minicomputer 12 performs various graphic and image processing functions, functions as a component of an architecture dedicated to high-performance graphic and image processing, and the like, which have conventionally been performed by general-purpose computers. The image memo IJ 11 is connected to various image input/output devices 13, a high-speed calculation device 14, and an image display device 15, and is configured to have multiple functions and high speed. With the development of such graphic image processing systems, various methods for controlling the flow of various commands and image data between each component have also been developed. One such control device is a keyboard
The following devices called display control devices are conventionally known. That is, in this device, display data is expanded into the image memory in response to display commands from the user program, and screen data stored in the image memory is output to the display device via the display control means.

[Problem to be solved by the invention]

However, in this case, when there are multiple display commands in succession from the user program, the image memory is edited for each display command and the screen data in the image memory is output to the display device. There was a problem in that it took a long time to complete the display process.

This drawback becomes more of a problem when the processing power of the display device is low.

Therefore, an object of the present invention is to independently control the image memory editing section that edits the image memory and the display output section by outputting screen data to the display device, and to output the screen data all at once to the display device. An object of the present invention is to provide a display control device that can shorten display processing time due to its flexibility.

[Means to solve the problem]

The display control device of the present invention includes a keyboard for processing input data, a display device for displaying display data, and an image memory for storing display data, and is controlled and activated via a first display control means, and an image memo collection section that expands and stores display data in an image memory; a display output section that is controlled and activated via a second display control means and outputs display data stored in the image memory to a display device; controlled activation via input control means;
A keyboard input section is provided for activating the display output section via the third display control means and displaying display data in the image memory.

Therefore, when the display control device according to the present invention is used, the image memory editing section is controlled and activated via the first display control means in response to a display command from the user program section, and display data from the user program section is stored in the image memory. It is expanded and stored. Then, in response to a screen output command from the user program section, the display output section is controlled and activated via the second display control means, and the display data stored in the image memory is output to the display device. Further, in response to a small input command from the user program section, the keyboard input section is controlled and activated via the input control means, the display output section is activated via the third display control means, and display data stored in the image memory is displayed. Output to a display device.

In this way, it is not necessary to output display data to the display device every time a user program displays a command, and screen data can be output to the display device all at once.

〔Example〕

The present invention will be described in detail with reference to Examples below.

FIG. 1 shows the display control device of this embodiment.

In the figure, a keyboard/display control device 17 includes an image memory editing section 19 that edits screen data in an image memory 18, and a display output section 21 that outputs screen data stored in an image memo IJ 18 to a display device 20. Be prepared. The keyboard/display control device 17 also includes a keyboard input section 23 that processes input data from the keyboard 22. The image memory editing section 19 is activated via the first display control means 27 in response to a display command 26 stored in the user program section 25 . In addition, the display output section 21 outputs a second screen according to a screen output command 29 stored in the user program section
It is activated via the display control means 30. Further, the keyboard input unit 23 is activated via the input control means 32 in response to a small input command 31 stored in the user program unit 25.

The keyboard input section 23 activated in this manner activates the display output section 21 via the third display control means 33.

Next, the operation of this embodiment will be explained.

FIG. 2 shows a situation in which the first display control means 27 and second display control means 30 of FIG. 1 activate the image memory editing section 19 and the display output section 21 to display display data.

As shown in FIG. 2(a), the user program section 25
The display command 26 stored in is given n times, and the screen output command 29 is given. The display command 26 is sent to the image memory editing section 19 via the first display control means 27, and the image memory editing section 19 is thereby activated. Then, the image memory editing unit 19 develops the display data included in the display command 26 into the image memory 18. This operation is repeated for the number of display commands 26. At this time, the screen data in the image memory 18 is as shown in FIG. However, the screen of the display device 20 remains at "Screen 0" as shown in FIG. 2(C).

Here, the screen output command 29 is sent to the display output section 21 of the keyboard display control device 17 via the second display control means 30.
Start 1. As a result, the display output section 21
The screen data "Screen n" developed in the image memory 18 is sent to the display device 20 and displayed. However, in this case, if the screen data from the image memory 18 is the same as that already displayed on the display device 20, this screen data is not output.

Next, in FIG. 3, the display output section 21 and the keyboard input section 23 are activated by the second display control means 30, input control means 32, and third display control means 33 of FIG.
This shows the situation in which display data is displayed.

As shown in FIG. 3(a), the user program section 25
Display command 26 stored in n times, and small input command 3
1 is given. The display command 26 is sent to the image memory editing section 19 via the first control means 27, as in the case of FIG. 2, and the image memory editing section 19 is thereby activated. Then, the image memory editing unit 19 develops the display data included in the display command 26 into the image memory 8. This operation is repeated for the number of display commands 26. At this time, the screen data in the image memory 8 is as shown in FIG. 3(b), from "Screen 0" to "Screen 1", "Screen 2", etc.
- The screen of the display device 20 is developed as "Screen N", but as shown in FIG. 3(C), the screen of the display device 20 is
” remains. Here, the small input command 29 is sent to the keyboard display control device 1 through the input control means 32.
7 is sent to the keyboard input unit 23, and this keyboard input unit 23 is activated. Activated keyboard input section 23
Next, the display output unit 21 is activated via the third display control means 33. Thereby, the display output unit 21 sends the screen data "Screen n" stored in the image memory 18 to the display device 20, and causes it to be displayed. However, in this case as well, if the screen data from the image memory 18 is the same as that already displayed on the display device 20, this screen data will not be output.

〔Effect of the invention〕

In this way, the display control device of the present invention can handle image memo IJH
By providing a display control means that independently controls the a collection section and the display output section, screen data can be sent to the display device all at once without outputting the display data to the display device for each display command from the user program section. This has the effect of shortening the display processing time. Furthermore, as shown in Figure 3, without modifying the conventional command contents of the user program section, screen data can be output to the display device only once or not at all for each small input command of the user program. This has the effect of improving operability.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a display control device according to the present invention, and FIG. 2 is a diagram showing how display data is displayed by the user program shown in FIG. 1 via the first display control means and the second display control means. FIG. 3 is a diagram showing a situation in which display data is displayed on the device, and shows a situation in which the user program shown in FIG. 1 causes display data to be displayed on the display device via the first display control means, input control means, and third display control means. FIG. 4 is a block diagram showing a general example of an image display device. 17...Keyboard/display control device,
18... Image memory, 19... Image memory editing section, 20... Display device, 21... Display output section, 22...
・Keyboard, 23...Keyboard input section, 25...User program section, 27.30.3
3...Display control means. Light 3 figure

Claims (1)

[Claims] A keyboard for processing input data, a display device for displaying display data, an image memory for storing display data, an image memory editing section for developing and storing display data in this image memory, and this image. a first display control means for controlling and activating a memory editing section; a display output section for outputting the display data stored in the image memory to the display device; and a second display control means for controlling and activating the display output section. , a keyboard input section for displaying display data in the image memory on the display device through the display output section; third display control means for controlling and activating the display output section; and input control means for controlling and activating the keyboard input section. A display control device comprising: