JPH02222049A - Virtual terminal control system - Google Patents

Abstract

PURPOSE:To attain an echo process with no dependence on the difference of an echo correspondence table prepared between the 1st and 2nd computers by sending the above table to the 1st computer from the 2nd computer and performing the echo control of a non-procedure terminal by reference to the correspondence table. CONSTITUTION:A virtual terminal user input means 7 of a 1st computer 1 sends a connection request to a terminal user input means 6 of a 2nd computer 2 in response to a connection request given to an application program 5 of the computer 2 from a non-procedure terminal 4. The means 6 sends the key input codes, the echo codes showing the contents of a 2nd echo correspondence table 9 to the means 7 and at the same time attains the connection to the program 5 designated by a request. The means 7 sets the received above codes at a 1st echo correspondence table 8. Thus an echo process is performed with no dependence on the difference of both tables 8 and 9 between both computers 1 and 2. Then the disturbance of a screen of the terminal 4 can be prevented with use of a flexible correspondence table not a fixed one.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a virtual terminal control system, and in particular a computer to which a non-procedural terminal is connected (hereinafter referred to as a first computer) and a computer equipped with an application program (hereinafter referred to as a first computer). , a second computer) via a communication line, and relates to a virtual terminal control method for performing echo processing of a non-procedural terminal when an application program on the second computer is used from the non-procedural terminal.

[Conventional technology]

Conventionally, when a key input is made from a non-procedural terminal, a virtual terminal user means provided on a first computer returns an echo code corresponding to the key input code to the non-procedural terminal according to a fixed echo correspondence table. The echo code sent back was displayed on the screen on non-procedural terminals.

[Problem to be solved by the invention]

In the conventional echo processing described above, the echo code returned by the first computer in response to a key input from a non-procedural terminal is fixed, so line breaks or single lines are transmitted between the first computer and the second computer. If the echo codes, such as transmission control codes for deletion, etc., are different, there is a drawback that when the echo code and the output data of the application program are successively output to the non-procedural terminal, the screen of the non-procedural terminal is disturbed.

In view of the above points, it is an object of the present invention to convert the echo correspondence table into a second
The echo correspondence table between the first computer and the second computer is transmitted from the computer to the first computer, and the echo process of the non-procedure terminal is performed by referring to the transmitted echo correspondence table. An object of the present invention is to provide a virtual terminal control method that enables non-procedural terminal echo processing that does not depend on differences.

[Means to solve the problem]

The virtual terminal control method of the present invention has a configuration in which a first computer to which a non-procedural terminal is connected and a second computer on which an application program is installed are connected via a communication line. When the application program is used from the non-procedure terminal of a second echo correspondence table provided on the second computer indicating a correspondence between key input codes and echo codes; and a connection request including a specification of the application program provided on the second computer via the communication line; a virtual terminal server that transmits the contents of the second echo correspondence table via the communication line, connects to the designated application program, and thereafter mediates data transmission and reception between the communication line and the application program; means for transmitting a connection request including a specification of the application engine program via the communication line in accordance with a connection request from the non-procedure terminal provided on the first computer, and transmitting a connection request including a specification of the application engine program from the virtual terminal server means to the second virtual terminal server means; Receives the contents of the echo correspondence table and sets it in the first echo correspondence table, and thereafter mediates the transmission and reception of data between the communication line and the non-procedural terminal, and responds to key input from the non-procedural terminal. and virtual terminal user means for returning an echo code according to the contents of the second echo correspondence table set in the first echo correspondence table.

[Effect]

In the virtual terminal control method of the present invention, a first echo correspondence table is provided on the first computer to indicate the correspondence between key input codes and echo codes, and a second echo correspondence table is provided on the second computer. When the virtual terminal server means is provided on the second computer and receives a connection request including specification of an application program via a communication line, a second echo correspondence table is generated. The virtual terminal user means is provided on the first computer by transmitting the contents of the data via a communication line and connecting to a specified application program, and thereafter mediating the transmission and reception of data between the communication line and the application program. In response to a connection request from a non-procedural terminal, a connection request including a specification of an application program is sent via a communication line, and the contents of the second echo correspondence table are received from the virtual terminal server means and set in the first echo correspondence table. Thereafter, it mediates the transmission and reception of data between the communication line and the non-procedural terminal, and responds to key input from the non-procedural terminal by echoing according to the contents of the second echo correspondence table set in the first echo correspondence table. return code.

[Example〕 Next, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a virtual terminal control system according to an embodiment of the present invention. The virtual terminal control method of this embodiment is based on a first computer 1, a second computer 2, a communication line 3 connecting the first computer 1 and the second computer 2, and a communication line 3 connecting the first computer 1 and the second computer 2. The connected non-procedure terminal 4, the application program 5 installed on the second computer 2, the virtual terminal server means 6 provided on the second computer 2, and the first
virtual terminal user means 7 provided on the computer l of
, the first echo correspondence table 8 provided on the first computer 1, and the second echo correspondence table provided on the second computer 2.
It is composed of an echo correspondence table 9.

The first echo correspondence table 8 includes the first key input code 81.
and a first echo code 82 are stored.

The second echo correspondence table 9 includes the second key input code 91
and a second echo code 92 are stored.

Next, the operation of the virtual terminal control system of this embodiment configured as described above will be explained.

When a connection request to the application program 5 on the second computer 2 is input from the non-procedural terminal 4, the virtual terminal user means 7 transmits the connection request to the virtual terminal server means 6 via the communication line 3.

When the virtual terminal server means 6 receives a connection request from the virtual terminal user means 7 via the communication line 3, the virtual terminal server means 6 receives a second key input code 91 and a second echo code 92 which are the contents of the second echo correspondence table 9. is transmitted to the virtual terminal user means 7 via the communication line 3, and connected to the application program 5 specified in the connection request.

The virtual terminal user means 7 receives a second key input code 91 and a second echo code 92 which are the contents of the second echo correspondence table 9 from the virtual terminal server means 6 via the communication line 3.
When received, it is set in the first echo correspondence table 8.

Thereafter, the virtual terminal server means 6 mediates the transmission and reception of data between the communication line 3 and the application program 5, and the virtual terminal user means 7 mediates the transmission and reception of data between the communication line 3 and the non-procedural terminal 4. Act as an intermediary.

Further, in response to a key input from the non-procedural terminal 4, the virtual terminal user means 7 selects a second echo pair set in the first echo correspondence table 8, and a second key input corresponding to the contents of the correspondence table 9. Returns an echo code according to code 91 and second echo code 92. Therefore, the non-procedural terminal 4 is virtualized as if it were directly connected to the second computer 2, and even if transmission control codes such as line breaks and line deletions are transmitted between the first computer 1 and the second computer 2, Even if the echo codes are different, the screen of the non-procedural terminal 4 will not be disturbed.

Note that when the connection between the non-procedural terminal 4 and the application program 5 is terminated, the contents of the first echo correspondence table 8 are restored to the original first key input code 81 and first echo code 82.

〔Effect of the invention〕

As explained above, the present invention transmits an echo correspondence table from the second computer to the first computer, and performs echo processing on a non-procedural terminal by referring to the transmitted echo correspondence table. first computer and second computer
It is possible to carry out echo processing for a non-procedure terminal that is independent of differences in echo correspondence tables between the two computers, and it is possible to prevent screen disturbances of the non-procedure terminal.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a virtual terminal control system according to an embodiment of the present invention. In the figure, - first computer, - second computer, - communication line, - non-procedural terminal, - application program, - virtual terminal server means, - virtual terminal user means, - first echo correspondence table, - first 2 echo correspondence table, ・First key input code, ・First echo code, ・Second key input code, ・Second echo code.

Claims (1)

[Claims] A configuration in which a first computer to which a non-procedural terminal is connected and a second computer installed with an application program are connected via a communication line; When using the application program on a computer, a first echo correspondence table provided on the first computer and showing a correspondence between key input codes and echo codes; and a first echo correspondence table provided on the second computer and showing a correspondence between key input codes and echo codes. a second echo correspondence table showing a correspondence between input codes and echo codes; virtual terminal server means that transmits the contents of the echo correspondence table via the communication line, connects to the specified application program, and thereafter mediates the transmission and reception of data between the communication line and the application program; In response to a connection request from the non-procedure terminal provided on the first computer, a connection request including the specification of the application program is transmitted via the communication line, and the virtual terminal server means transmits the connection request including the specification of the application program. The contents are received and set in the first echo correspondence table, and thereafter, data transmission/reception is mediated between the communication line and the non-protocol terminal, and the first echo correspondence table is set in the first echo correspondence table.
virtual terminal user means for returning an echo code according to the contents of the second echo correspondence table set in the second echo correspondence table.