JPS6398692A - Screen control system - Google Patents

Abstract

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

Description

[Detailed Description of the Invention] [Summary] In screen control, in order to solve the complexity of controlling different types of screens such as a Videotex screen and a laser disc screen when displaying them alone or superimposing them, we have developed these methods. A series of screens, if long, is divided into well-defined sections as a unit screen, and an ID is assigned to each screen so that it can be handled using that ID.

[Industrial application field]

The present invention provides a display control method for different or multiple types of screens such as Videotex screens and LaserDisc screens. In addition to displaying these screens individually, it is also important to develop technology that allows them to be displayed in a superimposed manner to display a variety of screens.

FIG. 7 shows a display device for a single screen and a superimposed screen. 1 is a CRT display, 2 is a laser disk device, 3 is an application program, 4 is a main body control device, 6 is a disk device, and 14 is a decoder. A laser disk accommodates a large number of screens (herein, a screen refers to a series of screens), each screen being assigned a frame number and can be accessed using this frame number. For example, if you give a command to display frame numbers 200 and above, the laser disk device will start up, and the head will pink up the image signal of the frame number 200 and above from the rotating disk, input it to CRT display 1, and send it to the CRT display 1. Screens starting from frame number 200 are sequentially displayed on the screen of the display.

To stop this display, give a stop command.

The Videotex screen is stored on the magnetic disk 6 as a code of the graphics that make up the screen.

When displaying a figure, for example a triangle, a code representing the triangle is read from the magnetic disk and provided to the decoder 14. The decoder converts this into pattern data and writes it to screen memory (VRAM).

The address to write the pattern data to the screen memory is.

Determined according to the specified figure display position. This memory is read out in synchronization with the scanning of the CRT, and the read data is transferred to the D/
It converts into A and gives it to a CRT display. As a result, a figure, in this example a triangle, is displayed on the screen of the display. Laser disk screens are moving images, but there are also still images, and Videotex screens are still images, but they can also be moving images.

Superposition of screens is performed between Videotex screens or between Videotex screens and Laserdisc screens.

FIG. 4 shows the former, and FIG. 5 shows the latter. The superposition shown in FIG. 4 is performed by memory overwriting. In other words, if you write the data of the image (including figures and background) ■ into the screen memory, and then write the data of the figure (not including the background) ■ into the screen memory, you will obtain the image ◎, which (in the drawing, the figure is If the data (as shown in the figure) is read out from the memory and applied to the CRT display, an image marked ◎ will be displayed. In FIG. 5, ■ is a videotex screen, and ■ is a laser disk screen. When you overlap these, the image becomes ◎. However, this is done on the condition that the laser disk screen is effective only within the frame of the Videotex screen (2). This condition is attached to screen ■. There is no buffer memory on the laser disk side.
The head output remains the same (through the changeover switch) C
Joins RT Display 1. The Videotex screen is stored in the above screen memory and is output in synchronization with the scanning of the CRT display. Overlapping both screens is a CRT
In each horizontal scan of the display, the changeover switch is operated in such a way that outside the frame of the screen (2), the signal on the screen side is adopted, and inside the frame, the signal on the screen (2) side is adopted.

[Problem that the invention seeks to solve]

In the apparatus shown in FIG. 7, control of the laser disc, videotex screen composition/display control, superimposition control of the laser disc screen and videotex screen, etc. are all controlled by the control device 4.
Application program 3 will perform this. However, the application program 3 must also perform control according to key human power, which makes the application program extremely complicated.

The present invention aims to improve these points and significantly reduce the burden on application programs for screen control.

[Means for solving problems]

The present invention relates to a screen control method for a device that displays different types of screens, such as a Videotex screen and a laser disc screen, either singly or in a superimposed manner. The present invention is characterized in that a plurality of unit screens are created in advance and an identification code is attached to each unit screen, and the unit screen is called up and displayed using the identification code.

[Effect]

According to this screen control method, it is possible to control different types of screens such as a Videotex screen and a laser disk screen (single 7
Do not be aware of superimposed display) in application programs (,
Simply by indicating the identification code of the screen (a series of screens) and instructing the display, the screen can be displayed on the display, which is extremely effective.

[Embodiment] As shown in FIG. 1, in the present invention, a main body control device 4 is provided with a display/laser disk device control section 5 and a screen definition table 7. Screen definition table 7 is application program 3
It is also stored in the main memory 8.

As is well known, in a CRT display, horizontal scanning is performed from the top edge to the bottom edge of the screen, and in the case of the increment type, this is done twice to make one screen. Rather, it is a series of screens that express a certain unified content or are separated at well-defined points and made into an appropriate length (i.e., screens that are grouped together as a cut scene in a commercial movie, TV, etc.). say.

Here, this is called a unit screen. An example is shown in FIG. Laser discs have frame numbers 100 to 500.
are played back, and Videotex (NAPLPS) displays drawings ■ and ■. Drawing ■ starts displaying at time T1 at the same time as the laser disc and continues until time T2, and drawing ■ ends at time T3, that is, the laser disc playback ends. At the same time, the display starts and continues until time T5. Therefore, the superimposed screen between times 11 and 120, the laser disk only screen between times T2 and T3, and the videotex only screen between times T3 and T5. A series of these screens constitutes a unit screen in the present invention, and the unit screen in this example includes a time period T3 to T3.
Sound comes in after 4 minutes. In the present invention, there are many types of unit screens (
Prepare all the items deemed necessary for carrying out the work, and manage each item by assigning an identification code (ID), for example, a serial number. The screen definition table 7 stores this ID and additional information of the screen. The contents of the screen definition table are shown below.

The FMCL area accommodates a group of instructions that define the screen.

The FMCL of the screen shown in FIG. 6 is as follows.

I VTloo...Frame 10 of the laser disc
To 0.

2 W...Wait until frame 100 is reached.

3 52 ... Set to superimpose mode.

4 VP500...Starts playback up to 500 frames.

5　P■　...Display NAPLPS drawing ■.

6T2-1... Wait for a time of T2-TI.

7　31　...Laser disk screen.

8 W...Wait until 500 frames are played.

9 So... Set to NAPLPS screen.

10Ax...Generates voice.

11　P■　...Display NAPLPS drawing ■.

In this way, in the present invention, a unit screen (a series of screens including videotex, laser disc, and sound in various combinations) that is treated as one screen is described in a command format, and it is anticipated that various such screens will be prepared in advance and used. (In this example, a logical screen number is assigned to each ID (in this example, a logical screen number) and stored in the magnetic disk 6. Further, the storage address and ID are stored in the screen definition table 7.

In this way, when displaying a screen, the application program 3 only needs to indicate the ID of the screen it wants to display and instruct its display. When this screen output instruction is given, the control unit 5 refers to the screen definition table to learn the address, accesses the magnetic disk 6, reads out the command group of the screen, and loads it into the main memory 8. Then, a group of commands etc. stored in the main memory are sequentially read out and analyzed to control the laser disk device 2, operate the decoder 14 to write and read the Videotex screen to the screen memory, and operate the switch. The control is performed to display the above-mentioned instructed screen on the CRT display 1. As a result, the application program no longer needs to control complicated screens.

FIG. 3 shows a flowchart of the above operation.

The control device 4 and the like are composed of a processor, an outline of which is shown in FIG. In FIG. 2, 11 is a processor, 15 is a common bus, 9 is an input device such as a touch screen, 10 is a printer, 13 is a file control unit, and the others are as described above. The videotex screen is input by the operator using input device 9.
can be created interactively while looking at the screen on display 1. A file name (drawing ■, ■, etc. in Figure 6) is attached to the completed screen, and the data necessary for forming the screen (figure code, display position address, etc.) and the file name are stored on the magnetic disk 6. I'll keep it.

〔Effect of the invention〕

As explained above, according to the present invention, the application program does not need to be aware of the control of different types of screens (single/M-combined display), such as the Videotex screen and the Laser Disc screen, and simply controls the screens (series of screens). By simply indicating the identification code of a group of screens and instructing the display, that screen can be displayed on the display, which is extremely effective. The screen display control program is separated from the application program and made independent, and overlapping screens are treated as one unit screen and can be called with an identification code, so even if the same unit screen with complex content is used multiple times. The application program does not need to repeatedly have a group of control commands, but only has to have commands to instruct the display of the unit screen. Furthermore, when modifying a unit screen, there is no need to modify the application program, and it is easy to modify the screen definition contents.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the main parts of the present invention, Fig. 2 is a block diagram showing a specific example of Fig. 1, Fig. 3 is a flow chart showing the processing procedure, and Figs. 4 and 5 are explanatory diagrams of superimposition. , FIG. 6 is an explanatory diagram of the screen concept, and FIG. 7 is an explanatory diagram of a conventional example. In FIG. 1, 1 is a CRT display, 2 is a laser disk device, 3 is an application program, 4 is a main body controller, 5 is a display/laser disk controller, 6 is a magnetic disk device, and 8 is a main memory.

Claims (1)

[Claims] In a screen control method for a device that displays different types of screens such as a Videotex screen and a laser disk screen individually or in a superimposed manner, these different types of screens are combined to form a series of well-separated screens. A screen control method characterized in that a plurality of unit screens are created in advance, an identification code is attached to each unit screen, and the unit screen is called and displayed using the identification code.