JPH01196648A - Terminal controller - Google Patents

Abstract

PURPOSE:To efficiently operate a terminal control device even when there is a limit in the using range of a device address by initially causing a terminal equipment number and a picture number to be an unusing condition, successively registering the terminal equipment number and picture number when an on-line work is started and causing the numbers to be the unusing condition when the on-line work is ended. CONSTITUTION:The device address to be added to a message in order to clear the address or sending destination of the message which is transmitted and received with a high order device and a device address table to show correspondence between a terminal equipment number A and a picture number B are equipped. The terminal equipment number A and picture number B are initially caused to be the unusing condition and when the deceleration of the on-line work start is executed, the terminal equipment number A and picture number B are successively registered. Then, when the declaration of the on-line work end is executed, the numbers are caused to be the unusing condition. Thus, even when there is the limit in the using range of the device address, the terminal equipment can be efficiently operated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a terminal control device, and particularly to a terminal control device that controls a plurality of terminal devices including one having several virtual screens.

[Conventional technology]

When a host device and multiple terminal devices are connected through all communication lines to conduct online inquiries, etc., as is well known, it is necessary to know the destination and sender of messages sent and received between the host device and the host device. In addition, a device address is added to the message, and the terminal control device is provided with a device address table that makes it difficult to match device numbers and device addresses.

However, in recent years, with improvements in the functionality of terminal devices, it has become possible for one terminal device to have multiple virtual screens and to execute online business with a host device. Furthermore, it has become possible to expand the number of terminal control devices that can be controlled. For example, when controlling 32 terminal devices, each having four virtual screens, as shown in FIG. 2, 128 device addresses are required.

However, if there is a restriction that the range of device addresses that can be used is only 64 due to the performance of the terminal control device and other external conditions, then with the conventional terminal control device, the total number of terminal devices that can be used for online business use is 16. Assign device addresses by limiting the number of screens that can be used for online business use on one terminal device to 32, and prepare a table for device addresses that can be changed from the outside. Then, the terminal control device refers to this table to determine the friend device address corresponding to the screen number of the terminal device.

[Problem to be solved by the invention]

In the conventional terminal control device described above, if the range of device addresses is smaller than the total number of virtual screens of the terminal device, in the former case, the number of usable terminal devices or the number of terminal devices that can be used by one terminal device is In the latter case, once the device address table is determined, even if there is an unused device address, it is specified in the device address table and the number of virtual screens is The problem is that you cannot use anything else.

[Friendly means of solving problems]

The terminal control device of the present invention is a terminal control device that controls a plurality of terminal devices including one having a plurality of virtual screens, and is capable of clarifying the destination and source of messages sent and received with a host device. For this purpose, a device address table is provided to show the correspondence between the device address added to the message and the terminal device number and screen number, and the terminal device number and screen number are initially set to be in an unused state. When the declaration of the start of online business is made, the terminal device number and screen gift number are registered in ;:C1, and when the declaration of the end of online business is made, it becomes unused.'c %D shall be.

[Metal practice]

Next, non-invention will be explained using drawings.

FIG. 2 is a block diagram of an online system for explaining the present invention. In this online system, a maximum of 32 terminal devices 1 to 32 can be connected to the terminal control device 100.
Up to 4 virtual screens can be used in each terminal device to display the host device az.
It is said that online business with oo is possible.

FIG. 1 shows the format of the device address table owned by the terminal control device 100 in FIG. 2.

In this embodiment, it is assumed that the usable range of device addresses added to messages transmitted between host device 200 and terminal devices 1 to 32 is 1 to 64.

Immediately after the power is turned on, this table remains unused because the correspondence between the device address and the terminal device number 41 screen number port has not yet been determined. When the terminal device is powered on, the terminal device's screen 1~
When there is a declaration to start online business from one of 4., the terminal control device 100 determines the unused device addresses in this table in order from the one with the lowest number,
Enter the terminal device number and screen number. In the example of FIG. 1, the screen 1. of the terminal device 1. Screen 1 of terminal device 2. Screen 1 of terminal device 3 Screen 2 of terminal device 2. Screen 3 of terminal device 2
, the screen 4 of the terminal device 2. The screen 1 of the terminal device 4 indicates that the online business has started.

Also, if there is a declaration that the online service has been terminated for the Metomo screen that you have been using, please refer to the corresponding terminal device! The number 9
Set the screen number area to 7J (set to "0") to indicate that it is unused. After that, the online start is declared from the screen of another terminal device, and at 9 o'clock, that device address becomes available for use.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to operate the terminal device at full efficiency even when there is a limit to the usage range of the device address added to the message transmitted between the host device and the terminal control device. It becomes possible.

[Brief explanation of the drawing]

FIG. 41 is a diagram showing an embodiment of the present invention, and FIG. 2 is a configuration diagram of a general online system for explaining the embodiment. Agent Patent Attorney Susumu Uchihara 61 1st

Claims (1)

[Claims] In a terminal control device that controls a plurality of terminal devices including one having a plurality of virtual screens, for clarifying the destination and source of messages sent and received with a host device. A device address table is provided to show the correspondence between the device address added to the message, the terminal device number, and the screen number, and the terminal device number and screen number are initially left unused, and the terminal device number and screen number are left unused at the beginning of the online business. A terminal control device characterized in that when a declaration is made, the terminal device number and screen number are registered in sequence, and when the end of online business is declared, the terminal control device is set to the unused state.