JPS6175921A - Terminal control system - Google Patents

Abstract

PURPOSE:To enable plural computers to hold the CRT terminal groups in common by setting a terminal controller between those CRT terminal groups and computers. CONSTITUTION:A computer 10 adds the graph information to a message (a) and sends them to a terminal controller 30 to display the graph, etc. to a graphic terminal equipment 40 by a user program 10A. The controller 30 sends the graph information to the equipment 40 in the form of the control information that can be visually displayed according to a conversion program 30G. A computer 20 also displays the graph information to the equipment 40 by a message based on a user program 10B. Furthermore the graph information can also be displayed to a graphic terminal equipment 50 as long as the equipment 50 is designated.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a terminal control system, and in particular to a terminal control system that converts simple messages received from multiple computers to
The present invention relates to a terminal control method having a terminal control device that visually displays on an RT terminal device.

(Prior Art) With the development of information processing technology, the functions of CR/T terminal devices have significantly improved, and it has become possible to display not only alphanumeric characters but also Japanese and graphs. Furthermore, the use of computers has increased significantly, and it has become common for a single company or research institute to install multiple computers with different architectures for different purposes.

In such a case, each computer
In order to visually display on the RT terminal, each combiator connects its own CR, T terminal under it and prepares its own conversion program that mediates between the user program and the CRT terminal control information. was.

However, as the functions of graph terminals become more complex, the terminal control information that must be visually displayed also becomes more complex, and the conversion programs that ensure the simplicity of user programs also become complex, which is then transferred to each combiator. It took a considerable amount of effort to prepare for each occasion. In addition, when using multiple different combinators even in the same department,
It was necessary to prepare multiple expensive CRT terminals for each computer.

(Object of the Invention) An object of the present invention is to eliminate the drawbacks of the conventional terminal control method, and to share the CRT terminal group among the plurality of computers by placing a terminal control device between the plurality of computers and the CRT terminal group. The goal is to provide a terminal control method that allows

(Structure of the Invention) According to the present invention, a plurality of computers having a user program for visually displaying on a CRT terminal are connected to the plurality of combiators, receive a simple message from the user program, and convert the message. a terminal control device that assembles terminal control information that can be visually displayed and sends it to a designated CRT terminal; A terminal control system characterized by comprising a group of CRT terminal devices is obtained.

(Example) Next, an example of the present invention will be described with reference to the drawings.

The drawing is a diagram 2 showing a terminal control system in an embodiment of the present invention, in which an embodiment of the present invention includes a comviator prisoner 10 and a comviator (Bl 20) having respective user programs IOA and IOB, and the combiator 10, 20, which has a conversion program 30G that assembles terminal control information that can be displayed visually; and a CRT (graphics) terminal device 40.50 for display.

The combiator 10 uses its user program 10A to display graph information to be displayed in order to visually display graph figures etc. on the CRT 41 of the graphic terminal device 40.
It is assembled into a simple message a according to certain rules and sent to the terminal control unit [30] through the communication control unit 11. At this time, the message a is a simple message assembled using the user program IOA to which the device number of the graphic terminal 40 is added. The terminal control device 30 receives the message a through the communication control unit 31t, and uses the conversion program 30G to convert the simple message into graphic terminal control information that can be visually displayed on the graphic terminal 40. The converted message is transmitted through the communication control unit 33 and sent as message C to the graphic terminal 40 according to the graphic terminal device number, CR, T41.
Visibly displayed above.

Similarly, the user program 20B of the computer 20 can visually display graph figures and the like on the graphic terminal device 40 by assembling simple messages. By changing the terminal device number in message a or message b, it is also possible to visually display it on the graphic terminal device 50.

In this embodiment, an example is shown in which there are two combiators and two GraQuick terminal devices, but the number can of course be increased. Furthermore, it goes without saying that CRT terminals are not limited to graphic terminals.

In this way, the present invention enables a terminal control device connected to a plurality of computers to receive a simple message according to a certain rule from the user program of the plurality of combiators, convert the message into terminal control information, and specify the message. This eliminates the need for each computer to create a conversion program that mediates between the user program and terminal control information, and allows arbitrary It is possible to display the image visually on a CRT terminal device.

C) Effects of the Invention) As explained above, in the present invention, since the conversion to terminal control information is performed by the terminal control device, each computer only needs to assemble a simple message using the user program, and it is not necessary to convert complex terminal control information. There is no need to generate . or,
This has advantages such as allowing multiple combiators to share a group of CRT terminals.

[Brief explanation of drawings]

The drawing is a block diagram showing one embodiment of the present invention. 10... Combiator, 11, 21, 31, 3
2゜33...Communication control unit, 20...Tomoe viewer, 30...Terminal control device, 40.5
0...CRT (graphic) terminal device.

Claims (1)

[Claims] a plurality of computers having user programs that visually display on CRT terminals; and a computer connected to the plurality of computers and receiving messages from the user programs;
A terminal control device that converts the message to assemble terminal control information that can be visually displayed and sends it to a designated CRT terminal device; and a CRT that is connected to the terminal control device and visually displays it on a CRT according to the terminal control information. A terminal control method characterized by comprising a group of terminal devices.