JPH01216454A - Terminal computer - Google Patents

Abstract

PURPOSE:To efficiently perform a job on a terminal side by enabling data to be printed out by a printer on a terminal side by transmitting a null nonuse character following an escape code. CONSTITUTION:When the reception of a code representing the escape code is confirmed, it is judged whether or not the next reception data coincides with prescribed character data by a means 14, and when coincidence between them is confirmed, a control command for the printer on the terminal side can be obtained according to following reception data by a means 16. In such a way, when the character data of prescribed code (null character not being used in an escape processing) is transmitted following the character data of the escape code, the control command for the printer on the terminal side can be obtained according to the character data following the data by the means 16, then, printing is performed by the printer on the terminal side.

Description

[Detailed description of the invention] [Table of contents] Overview Industrial field of application Conventional technology Problems to be solved by the invention Means for solving the problems Effects of the invention [Summary] Used in host computer terminals The purpose is to provide a terminal computer that can improve the efficiency of terminal-side operations by enabling print output from a terminal-side printer, and for this purpose, it receives each character data sent by the host computer. means for monitoring reception of character data indicating an escape code, and determining whether or not next received data matches predetermined character data when reception of character data indicating an escape code is confirmed. means and
and means for generating a control command to the terminal-side printer according to the subsequent received data when both data match.

[Industrial Field of Application] The present invention relates to a computer used as a terminal of a host computer.

In a multi-user interactive general-purpose operating system, by running a predetermined terminal emulator program on a personal computer, the personal computer can be easily used as a terminal.

[Prior Art] FIG. 6 shows an example of this type of computer system, in which character data (Ascii
code) is being sent and received.

Then, on the terminal side, the data sent by the host is displayed on Display 2.
4, and data to be sent to the host side is entered manually from the keyboard 26.

The host computer 20 is also provided with a printer 28, and by executing a print program on the host computer 20, lists and the like are printed on the printer 28.
Printed out from.

Furthermore, a printer 30 is connected to the personal computer 22, and the printer 30 is used when the personal computer 22 operates independently.

Note that by running a predetermined terminal emulator program on the personal computer 22, the personal computer 22 can function as a terminal for the host computer 20.

Then, as shown in Figure 7, the personal computer 2 of the terminal
2 requests the host computer 20 to start a print program (step 32), and the host computer 20 starts the print program in response to the request (step 34).

This executes the print program (step 36).
, the list is printed by the printer 28.

[Problem to be Solved by the Invention] Here, if the host and the terminal are far apart and it becomes necessary to obtain the printed list on the terminal side, it is necessary to obtain the printed list from the host side. It is necessary to transport the list to the terminal side by mail or the like (step 38).

Therefore, get this list on the terminal side (step 40)
It takes a lot of effort and time to do so.

The present invention has been made in light of the above-mentioned conventional problems,
The purpose of this is to print directly on the terminal side using the terminal printer (printer 30), which was idle equipment when the computer was functioning as a terminal, thereby reducing the amount of time spent on transporting lists. The goal is to eliminate wasted effort and time.

[Means for Solving the Problems] In order to achieve the above object, a terminal computer according to the present invention is configured as shown in FIG.

In the figure, means 10 receives character data transmitted from the host computer, and means 12 monitors reception of character data indicating an escape code.

And the means 12 is to receive a code indicating an escape code.
Once confirmed, the means 14 determines whether the next received data matches the predetermined character data.

When it is confirmed in step 4 that the two data match, a control command for the terminal-side printer is obtained by means 16 in accordance with the subsequent received data.

[Operation] Among the characters sent and received between the host computer and its terminal computer, special characters are specified in the range of 00 to IF in hexadecimal notation, and the escape code (in hexadecimal notation) in the special characters is The characters following IB) have a special meaning.

Various controls are performed by escape processing using these subsequent characters, but not all characters are used for this processing.

Therefore, by sending an empty, unused character following the escape code, it is possible to cause the terminal to perform special processing.

In the present invention, when character data of a predetermined code (empty characters not used in escape processing) is transmitted from the host computer following the character data of the escape code, control commands are issued to the printer on the terminal side according to the character data following these characters. is obtained by the means 16 and printed by the printer on the terminal side.

[Embodiment] Hereinafter, a preferred embodiment of the terminal computer according to the present invention will be described based on the drawings.

In FIG. 2, the configuration of the personal computer 22 is explained, and the communication control section 41 controls data transmission and reception with the host computer 20 (TTY procedure, carried out in one character car - position). .

The display 24 is given display data from the display processing section 42, and input data obtained by operating the keyboard 26 is given to the keyboard human power section 44 and sent from the communication control section 41 to the host computer 20. There is.

Further, the character data transmitted by the host computer 20 is internally taken in by the host character input IIB4B, and in normal cases, the input data is given to the display processing section 42 as is.

Further, the local printer request detection unit 48 determines whether each input data is an escape code, and when the input data is an escape code, the input data that follows is a predetermined character d Z 9 It is determined whether or not it belongs to.

At that time, if it is confirmed that the continuous input data in the escape code does not indicate the predetermined character "Z', the ESC processing unit 50 performs escape processing.

The data obtained by this ESC processing section 50 is stored in the display processing section 2.
8, and its contents are displayed on the display 22.

If it is confirmed that the input data is an escape code, and if the following human input data indicates the above-mentioned character (Zl), what follows the character 'Z9 is 't'. ' or d p j is determined by the request determining unit 52.

In the request determination unit 52, the letter ``z'' is followed by the letter d.
If it is confirmed that it is tl, the page forwarding processing unit 54
-1 operation is started, and as a result, the page of the printer 30 is turned.

Further, when the request determining unit 52 confirms that the character 'Z' is followed by the character 'p', the print processing unit 54-
2 starts, and as a result, the printer 30 prints one line.

In FIG. 3, the operation of this embodiment is explained using a flowchart. When data for one character sent out by the host computer 20 is captured, step 60) determines whether this captured data is an escape code or not. is determined (
In step 62), if the character is not an escape code, the character is displayed on the display 24.

If the captured data is an escape code (YES in step 62), the next data is captured (step 66), and it is determined whether this data indicates the character "Z'" mentioned above. A determination is made (step 68).

If the character indicated by the captured data is not 129 (No in step 68), the escape process (step 70) according to the character following the escape code is
The cursor movement control is performed by the SC processing unit 50 and is shown, for example, in FIG. 4(A).

The entire screen clear control shown in Figure (B), Figure (C)
) The line partial deletion control shown in ) is performed.

Here, when the reception of the character 'Z9 following the escape code is confirmed (YES at step 68), the character I Z
The next data of 1 is fetched (step 72), and the request determining section 52 determines whether the input data indicates the character "t" or the character "p" (step 74).

If the input data at that time indicates the character 4V as shown in FIG. 5(A), the page feed processing unit 54-1
The process starts, and as a result, the printer 30 performs page feeding (step 76).

Further, if the request determination unit 52 confirms that the input data at that time indicates the character 6p+, the print processing unit 54-2 captures the received character, and the capture is performed as shown in FIG. ) until a new line code is input (step 7).

When the input of the last line feed code is confirmed, the print processing unit 54-2 controls the printing of the printer 30 (
In step 80), one line of received data is printed by the printer 30.

As explained above, according to this embodiment, even when the personal computer 22 is used as a terminal, printing is directly performed by the printer 30 on the terminal side connected to it, so the terminal side It becomes possible to use the contents of the list as is in business operations, significantly increasing efficiency.

[Effects of the Invention] As explained above, according to the present invention, the contents transmitted by the host can be printed on the terminal side under the control of the host side, and the printing results can be used to significantly improve the efficiency of work and business on the terminal side. It becomes possible to do so.

[Brief explanation of the drawing]

Figure 1 is a diagram explaining the principle of the invention, Figure 2 is a diagram explaining the configuration of the embodiment, Figure 3 is a flowchart explaining the operation of the embodiment, Figure 4 is a diagram explaining the contents of escape processing, and Figure 5 is printing. FIG. 6 is an explanatory diagram of the configuration of the computer system. FIG. 7 is an explanatory diagram of the conventional procedure for obtaining a print list. 20... Host computer, 22... Personal computer, 24... Display, 26... Keyboard, 28... Host side printer, 30... Terminal side printer, 41... Communication control unit, 42...Display processing section, 44...Keyboard input section, 46...Host character input section, 4th...Local printer request detection section, 50...E
SC processing unit, 52...request determination unit, 2 8 execution country Q -ノ 'J N〆-8ku button ＼I ν Figure 7 explaining the procedure for obtaining a print list in the past

Claims (1)

[Claims] Means (10) for receiving character data transmitted by a host computer; means (12) for monitoring reception of character data indicating an escape code; and means (12) for monitoring reception of character data indicating an escape code. means (14) for determining whether or not the next received data matches predetermined character data, and when both data match, generating a control command to the terminal-side printer according to the subsequent received data; Means to do (16)
), and a terminal computer comprising: