JPS61100792A - Continuous display switching control system - 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 [Field of Application of the Invention] The present invention relates to a graphic terminal capable of displaying one figure, two peaks, one character, etc., and particularly to a display method for continuously displaying different screen contents.

[Background of the invention]

Video displays are used in movies, so-called animations on television, and in advertisements. The conventional method of creating a video is to photograph a handwritten manuscript one frame at a time using optical film.
Previously, the method was to develop and then project the manuscript continuously, but with the advancement of computer graphics technology, the image of each frame is displayed on a graphic display, which completely replaces the work of creating manuscripts by hand. is gradually being adopted. However, as long as optical film is used, it is impossible to see the results immediately after photographing because a developing operation is required.

On the other hand, there is a method of directly displaying a moving image on a graphic Φ display. The following two methods are considered for this. One is to store the frame buffer contents for each frame in advance in a large 8ffE external storage device (11a disk device, etc.), and when displaying a video, the frame buffer contents corresponding to one frame are stored in the frame buffer one after another. This is a method of transferring and displaying. In this method, the large amount of data to be transferred to the frame buffer requires a large capacity external storage device and a dual-speed data transfer channel, resulting in a relatively expensive system economically.

A second method is to store the contents of multiple frames in a frame buffer, and when displaying a video, select and retrieve only the portion corresponding to each frame (PIX
EL May-June 1983). This method requires a large memory capacity in order to store frame buffer data for a large number of frames, and there are problems in terms of economy and memory implementation technology.

[Purpose of the invention]

1 4 shots ``t'' 9 times ton video 3 digits 6 each ° ``t''
The object of the present invention is to realize high-speed data processing and freely setting the order and timing without requiring any special high-speed data processing hardware mechanism or large-capacity memory.

[Summary of the invention]

The present invention stores a control monitor for switching and displaying each frame in a moving image and time data serving as a display switching time interval in a graphic file that stores display graphic data in a graphic terminal, and reads out and displays the graphic file. The feature is that a graphics processor that performs processing processes the control data and the time data to realize moving image display.

[Embodiments of the invention]

FIG. 1 is a block diagram of an implementation array in a ruskscan type graphics display device, in which a terminal controller 1, a graphics file 2, a graphics processor 6,
It consists of a graphic display 7. The terminal controller 1 writes data one after another into the graphic file 2 through its own processing or by receiving processing results from other computers. To display the contents of the graphic file 2 on the CRTIO screen, the following steps are usually performed.
I need. First, the graphic fist processor 6 is activated and the contents of the graphic file 2 are processed. As a result, the data stored in the graphic file 2 undergoes processing such as coordinate transformation and decomposition into line segments (in the case of circles, etc.), and is sent to the graphic display 7. The display Q processor 8 receives this line segment data etc. from the processor 6, converts it into pixel fist data, and writes it into the frame buffer 9. Vixel data indicates the color type and intensity of light of minute luminescent units (vixels) on the CILT tube surface. The frame buffer 9 is this pixel
It is a storage device for storing data, and it multiplies 1 bit or multiple bits of data 't# corresponding to each pixel. If this pitch) ff is 1 pit, the pixel data stores only two values, 0 or 1, for each pixel, so a binary figure without intermediate colors or halftones is displayed on the screen; If the number of bits is 2 or more (referred to as n), the pixel data can range from θ to (2fi-1), so it is possible to display 2 to the nth power of colors on the screen, including gradations. Become.

A feature of the present invention is that control data 3 and time data 5 are incorporated into the graphic file 2. The operation will be explained below. To simplify the explanation, the video consists of four frames, and the content is that the Roman letter A is rotated clockwise from an upright position up to 90' in 30° increments. In addition, the frame A/buffer 9 has an A plane 91 and a plane B7.
'L/-: It is assumed that it is composed of four planes: y92, C plane 93, and D plane 94.

Figure @2 shows an example of graphic file 2 when displaying this moving image. Control data 30°31.32.
33 has contents for selecting planes 91, 92, 93, and 94, respectively, as planes for which writing is permitted. As a result, the graphic data 40.41, 42.43 are written separately to the plane 91°92.93.94, respectively.

The control data 34, 35, 36, 37H1C are each plane 91. as a plane displayed on T1o.・It has content to select 92°93.94. When such a graphic file 2 is executed, first, graphic data 40, 41,
42.43 are written to the frame buffer 9. Third
The figure shows the results. Next, the contents of the four planes, that is, the contents of the four frames, are displayed one after another on the CRTIO.

The display time of each frame is time data 50, 51, 52.5
It is defined in 3. In this example, since the content to be displayed is written in the frame buffer in advance, each frame can be switched by simply switching the plane, and the display can quickly switch between the reeds and the valleys. In the present invention, the control data 3 and the time data 5 are stored in a file 2 of the type shown in FIG. 7, and the graphic processing processor 6 reads them out (11), thereby speeding up the switching of each frame. g4 diagram is control data 3
This is an example in which the detailed processing time for executing one piece of data is shown for the case where the time data 5 and time data 5 are stored in the main memory of the terminal controller, and the present invention (2). Processing is roughly divided into three steps: inputting one piece of data, calculation, and outputting control information. When processed by the terminal controller 21, there are input request processing 20, input termination processing 22, and output request processing. 24. Pre-processing and post-processing shown in output end processing 26 require a lot of processing time. The reason for this is that since a variety of peripheral devices are connected to the terminal controller, input/output processing must be generalized, and other processing may be performed during the wait time for hardware processing to complete. This is because synchronization processing and program switching processing are required. In contrast, in the present invention, since the graphics processor 6 is hardware dedicated to screen switching control, there is almost no pre-processing or pre-processing regarding input/output.

Regarding calculations, when the terminal controller 1 performs the calculations, there is an overhead of data editing for output requests when the data is retrieved manually, but in the case of the present invention, these are almost unnecessary. Therefore, the processing time is short. Another effect is that the graphic data 4 (40-43) and the other control data 3 (30-43)
37) and time data 5 (50 to 53) is always optimized.

If both are allocated to separate areas, unless the optimum ratio of the amount of memory to be allocated to both is set, for example, there is still room in the area allocated to figure data 3, but control data 5 may be stored. There is a possibility that there will be a waste of space, such as not being able to store more data due to insufficient space. There is also a method of dividing the common area into small blocks and allocating them in blocks as necessary, but this makes the process more complicated. In the present invention, the graphic data 4, control data 3, and time data 5 can be stored in a mixed manner in one common area, so no memory is wasted.

FIG. 5, CB) shows a method for switching between presentations and presentations using plane division according to the present invention.

Figure 3 shows a graphic file, and ■ shows a state in which the plane 91 is divided into 16 rectangular areas 911 to 926. In this column, plane 91e1, which is normally displayed on the entire screen,
It is divided into six rectangular areas 911 to 926 of equal size. By writing in each of these rectangular shell areas as all pixel Φ data of the figure to be displayed on the entire screen,
Up to 16 screens of pixel data can be stored simultaneously on one plane1.If each of these is enlarged 4 times and switched and displayed one after another, 16 screens can be switched and displayed in succession. . For that purpose, a rectangular area 911
Control data 3 for area selection when writing to ~926
11 to 326, graphic data 411 to 426 defining the graphics to be written in each area are stored in the graphic file 2, and control data 331 to 346 indicating the hardness to be displayed on screens 7'c1 and 8; Display time 531 for each rectangular area
~546 is written in the graphic file 2. Since 16 screens can be stored with one plane, 64 screens can be stored with 4 planes.

FIG. 6 (6) shows an example of the graphic file 2 and the plane 91 when the present invention is used to display the zigzag pattern. 310 is control data for setting an initial value in a counter. 311-326, 331-346, 411-426, and 531-546 are control data, graphic data, and time data, which have the same contents as in FIG. 347
indicates that 1 is to be subtracted from the value of the counter; 348 is control data that indicates that when the page of the counter is positive, the page jumps to 3310 control data. In this example, if the counter value 'iN (N is a positive number), then the rectangular areas 911 to 92 into which the plane is divided are
6 will be displayed repeatedly N times.

〔Effect of the invention〕

According to the present invention, since the screen display switching process can be performed by the graphic processing processor, the screen display switching processing time can be improved by one to two orders of magnitude compared to program control.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a sequence of graphic file contents in an embodiment of the present invention, FIG. 3 is an explanatory diagram of frame buffer contents in an embodiment of the present invention, and FIG. The figures are a diagram explaining screen switching processing time, Figure 5, (c) is a diagram explaining screen switching processing time, and Figure 6 (7) is a diagram explaining screen switching processing time.
(B) is an explanatory diagram of repeated display control processing using the invention. 1...Terminal controller, 2...Graphic file, 3
... Control data, 4... Graphic take, 5... Time data, 6... Graphic e-processor, 7...
Graphic display, 8...Display
Processor, 9...Frame buffer, 10...C
l1(T.

Claims (1)

[Claims] 1. A graphic display that displays characters and figures, a graphic file that stores data regarding the position and shape of characters and figures to be displayed, and a graphic processor that reads the contents of the graphic file and displays it using the graphic display. In a display switching control system for a graphics terminal device, switching control data indicating switching contents of a plurality of screens is stored in a graphics file together with graphic data, and the switching control data is read out when a graphics processor reads and displays the graphics file. . A continuous display switching control method, characterized in that the next screen display timing is controlled based on the read switching control data, and a plurality of screens are sequentially switched and displayed.