JPH0368239A - Terminal characteristic converter - Google Patents

Abstract

PURPOSE:To hold only one kind of terminal characteristic to perform communication at the time of communication among several kinds of computer by providing a terminal characteristic converting means having an internal storage between a TSS process and a communication line. CONSTITUTION:When data is received through connection points B1 to Bn at the time of data reception from the other party computer, a communication line connecting part 2 reports the data reception to a terminal characteristic conversion processing part 3 and stores it in an internal storage part 3a. The processing part 3 converts the characteristic of reception data from the standard terminal characteristic to the local terminal characteristic of a TSS process 1 based on address information of reception data stored in the storage part 3a and reports this data to the process 1. The process 1 processes this data in the same manner as data from a terminal equipment connected through a connection point A and sends a response to the processing part 3 and repeats this operation till reception of data indicating the bus release from the other party computer. Thus, the characteristic of the terminal equipment is only held to realize the inter-computer communication.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention... The present invention relates to a terminal characteristic conversion device used in a computer system.

[Prior art] In conventional technology, in order to realize communication between computers, it is necessary not only to maintain the characteristics of the local terminal device in the TSS process within the own computer, but also to maintain the characteristics of the other computer and the terminal device of the other computer. It became necessary to have the following characteristics.

[Problems to be Solved by the Invention] In the above-mentioned conventional technology, in order to perform communication between computers, the TSS process within the own computer is equipped with the characteristics of the other computer and the characteristics of the terminal device of the other computer.

- When there are several types of target computers.

Programs compatible with that number of terminal devices must be developed and introduced.

- Each time a new computer becomes a connection partner.

It is necessary to develop and introduce a corresponding program.

There is a drawback.

The purpose of the present invention is to communicate between several types of computers. The purpose is to eliminate the above-mentioned drawbacks by making it possible to implement it with one type of terminal characteristics, and to make it possible with small-scale equipment and programs.

[Means for Solving the Problems] A terminal characteristic conversion device according to the present invention is connected between a terminal device and a communication line, and has a TSS process that holds the characteristics of the terminal device as its own terminal device characteristics and performs processing. A terminal characteristic conversion device having:

characteristics of a terminal device connected by the communication line between the TSS process and the communication line;

The present invention is characterized in that it includes a terminal characteristic conversion means for converting into the characteristic of the own terminal device.

[Example] Next, an example of the present invention will be described in detail with reference to one drawing.

FIG. 1 is a block diagram showing a terminal characteristic conversion device according to an embodiment of the present invention.

The illustrated terminal characteristic conversion device connects the terminal bag W via the connection point A.
TSS process 1 is connected to T (not shown) and performs conversion of interface signals, data transmission/reception with terminal devices, decoding of commands from terminal devices, and the like.

Control of one line termination device or modem device connected to n line termination devices (not shown) or modem devices (not shown) via connection points B, -B.

Assembling data received from the line, decoding transmission control codes, checking error check codes, disassembling data sent to the line into transmission signals, error check codes,
A communication line connection section 2 that adds a transmission control code, etc.;
An internal storage section 3a receives and passes commands and data to and from the SS process 1, and receives and passes commands and data to and from the conversion 1 from the local terminal characteristic data to standard terminal characteristic data to the communication line connection section 2. The terminal characteristics conversion processing section 3 includes a terminal characteristic conversion processing section 3.

Next, the operation of the terminal characteristic conversion device of this embodiment will be described.

First, the operation when transmitting data from a terminal device to a partner computer will be explained.

The terminal device performs TSS processing based on the communication protocol established with TSS process 1 for the normally connected line.
Make a logical connection with process 1.

Roughly, a command is issued to TSS process 1 to request connection to the other party's computer.

TSS process 1 decodes the command.

A logical bus is set up between the terminal characteristics conversion processing section 3, the data is stored in a predetermined area of the internal storage section 3a, and the information is sent to the terminal characteristics conversion processing section 3 at a specified address of the internal storage section 3a. Issues a data transmission command with information.

The terminal characteristic conversion processing section 3 converts the 20-cal terminal characteristic data into standard terminal characteristic data, changes the logical bus assignment described above, and stores the internal memory 3a for one communication line connection section 2. Issues a line connection command with address information for a specified area.

The communication line connection unit 2 stores the above-mentioned address information in a predetermined area, and turns on necessary control signals to the line termination device or modem device of the designated channel via connection points 81 to B. Do it.

Reads control signals of line termination equipment or modem equipment,
After confirming that the physical bus has been successfully established,
Send the aforementioned data to a line terminator or modem.

Next, the operation when receiving data from the other party's computer will be explained.

From the line that has been connected in advance, connection points 81-B,
When data is received via the 1 communication line connection unit 2, the communication line connection unit 2 reports the data reception to the terminal characteristic conversion processing unit 3, stores the data in a predetermined area of the internal storage unit 3a, and stores the address information of that area. Notice.

The terminal characteristic conversion processing section 3 decodes the data.

If a response is requested, a command to send an affirmative response to the other party's computer is issued to the communication line connection section 2.

After the communication line connection unit 2 sends an acknowledgment to the line.

A transmission completion report is sent to the terminal characteristic conversion processing unit 3.

The terminal characteristic conversion processing unit 3 converts the characteristics of the received data from the standard terminal characteristics to the local It is converted into data with appropriate terminal characteristics and notified to TSS process 1.

The TSS process 1 processes this data in the same way as the data from the terminal device connected via the connection point A, and issues a response to the terminal characteristic conversion processing section 3.

The same operation is repeated until data indicating bus release is received from the other computer. Upon receiving data indicating bus release from the other party's computer, the TSS process 1 issues a command to disconnect the bus with the terminal characteristic conversion processing section 3.

When the terminal characteristic conversion processing unit 3 receives this command, it issues a reset request for the corresponding communication line to the 1 communication line connection unit 2, and resets the communication line between the TSS process 1 and the communication line connection unit 2. Disconnect the logical bus.

[Effects of the Invention] As explained above, the present invention installs a device between its own computer and a communication line for mutually converting data based on local terminal characteristics and data based on standard terminal characteristics. By the way.

The TSS process within the own computer can realize inter-computer communication by simply maintaining the characteristics of the local terminal device. Furthermore, even if a new computer becomes a connection partner, no changes are required to the TSS process.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a terminal characteristic conversion device according to an embodiment of the present invention. 1...TSS process, 2...communication line connection unit, 3 terminal characteristic conversion processing unit, 3a...internal storage unit, A...connection point with terminal device + Bl~B,...line termination Connection point with equipment or modem equipment.

Claims (1)

[Claims] 1. A terminal characteristic conversion device that is connected between a terminal device and a communication line, and has a TSS process that holds the characteristics of the terminal device as its own terminal device characteristics and performs processing, the device having a TSS process that performs processing, the TSS process and the communication 1. A terminal characteristic converting device, comprising: a terminal characteristic converting means for converting the characteristics of a terminal device connected by the communication line into the characteristics of the terminal device itself, between the communication line and the communication line.