JPH0281544A - Signal line conversion system - Google Patents

Abstract

PURPOSE:To attain connection to a data terminal equipment whose signal pin position of a signal line differs without changing the connection of a signal cable by varying the signal pin position of the signal line of a communication port of a communication equipment according to the setting of the user. CONSTITUTION:The user can set the signal pin position of the signal line on a communication port 34 optionally and its content is stored in an internal table 37a. Moreover, a means 33 is provided, which changes the signal line having a control request from a central control section 31 and communication pin device of the signal line set/reset on the communication port 34 according to the setting of the user by referencing the table 37a. Then the signal line control and its state confirmation on the communication port 34 are not implemented by the central control section 31 of the communication equipment 22 directly to the communication port control section 35 but via the conversion means 33. Thus, the connection between equipments with different signal pin position of the signal line is attained without using special connection cable.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a communication device that uses communication ports to exchange information with an external device, and in particular, the present invention relates to a communication device that uses communication ports to exchange information with an external device. This invention relates to a signal line conversion method suitable for connection between different types of devices.

[Conventional technology]

As described in Japanese Patent Application Laid-Open No. 63-30044, conventional devices use a signal line inversion switching method for the communication port of a communication device, so that the same communication can be performed without using a dedicated signal code with crossed signal lines. It allows interconnection with devices equipped with ports.

[Problem to be solved by the invention]

In the above conventional technology, in reversing the signal line of the communication port,
Although this is a simple and effective method, no consideration was given to conversion of arbitrary signal lines.

Therefore, 1. For example, for a certain signal pin on a communication port, the data terminal marks the pin as data terminal ready (ER).
There was a problem that if the signal pin positions of the communication port signal lines were different, such as those used for signals, or for the transmission request (R3) signal in communication devices, those models could not be connected to each other. .

An object of the present invention is to enable the connection of the above-mentioned models with different signal pin positions of signal lines without using a special connection cable.

[Means to solve the problem]

The above object is achieved by using the above means.

In a communication device that exchanges information with an external device via a communication port, the user can arbitrarily set the signal pin position of the signal line on the communication port on a single display screen, and the contents are stored in an internal table. Leave it there.

Also, refer to the above table for the signal pin positions of the signal lines for which control was requested from the central control unit and the signal lines turned ON/○FF on the communication ports. Control and confirmation of its status are not performed directly by the central control section of the communication device on the communication port control section, but through the conversion means.

[Effect]

First, when connecting a communication device and a data terminal whose signal pin positions on the signal line on the communication port are different, the user must set the signal pin position of the signal line on the communication port of the communication device to be the same as that of the data terminal. Set. Its contents are stored in a translation table within the communication device.

Then, when the signal line on the communication port becomes ○N10FF,
The signal pin position of the 0N10FF signal line is converted to the signal pin position shown in the conversion table above, and the signal line at the converted signal pin position is changed to ○N/○FF, and the central control unit of the communication device Inform.

In addition, the 0N of the signal line at a certain signal pin position from the central control unit
When receiving 10FF control, the signal pin position of the signal line that received the 0N10FF control is converted to the signal pin shown in the conversion table above, and the signal line of the converted signal pin position is converted to the communication port. ON10FF control is performed.

This allows the central control unit of the communication device to change the signal pin position of the signal line on the communication port without changing its own signal line processing. Connection with different devices becomes possible.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

Figure 2 shows a built-in data terminal (21) that performs data communication and a network control unit, which performs communication call control such as making, receiving, and disconnecting calls to and from a public network (24) automatically or manually from the data terminal. It is a diagram showing an example of connection with a communication device (22) using a signal cable (23).

FIG. 3 is a diagram showing an example of the internal configuration of the communication device (22). Here, 31 is a central control unit that controls the entire communication device (22), 32 is a signal line setting unit that sets the line name, and 33 is a real signal line register (1G) or a virtual signal line buffer (1b). A signal line conversion program that converts the read contents according to the conversion table (37), 34
35 is a communication port control unit that controls signals on the communication port; 36 is a memory unit that stores information; 37G is signal line information set by the user; The signal pin conversion table 37b stores conversion information of the signal pin position of the signal line on the communication port based on the conversion information of the signal pin position of the signal line on the communication port, which is controlled by the signal line control command from the central control unit (31). Signal line control conversion table that stores pin position conversion information,
38 is a network control unit that performs communication call control such as calling, receiving, and disconnecting from the public network (24), and 39 is a display unit that displays a signal line setting screen and the like.

FIG. 1 is a diagram schematically showing a signal line conversion method according to the present invention. Here, 1G is the communication port (34)
1b is a signal line conversion program (33
) is a virtual signal line buffer used to monitor and control the status of virtual signal lines converted by

FIG. 4 is a flowchart showing an example of the conversion procedure performed by the signal line conversion program (33).

FIG. 5 shows two conversion tables (3
7a, 37b) is a diagram showing an example.

FIG. 6 is a diagram showing an example of a signal line setting screen displayed on the display section (39) when the user sets the signal line using the signal line setting section (32).

The procedure for setting and converting signal lines will now be explained using FIGS. 4, 5, and 6.

To set the signal line, first, when the user operates the signal line setting section (32) to set the signal line, the display section (39)
The signal line setting screen (61) is displayed. This display screen shows the signal line name (63) for each current signal pin number (62).
) represents. The user enters the signal pin number (
Any signal line can be set by changing the signal line name (62) (63) on the screen. Then, the setting contents are stored in the conversion table (37). Here, the initial values of the conversion table are the communication port signal pin number (51) and the conversion virtual signal pin number (52), or the contents of the virtual signal line control command (53) and the conversion actual signal line control command (54). They are the same, that is, they are not converted.

After that, the communication device t! (22) is a data terminal (21)
Wait for an outgoing call from the public network (24) or an incoming call from the public network (24). Here, the signal line conversion program (33) is.

To monitor them, the real signal line register (1
α) and the contents of the virtual signal line buffer (1b) are read (401, 411), and it is checked whether the contents are different from the contents read last time, that is, whether the signal line is ON10 F F or a new control command is written. (402, 412) and registers the actual signal line register (1α
), the signal pin conversion table (37α)
Refer to ○N/○FFL, and the actual signal pin number (51)
The contents read from the real signal line register should be converted so that the signal pin shown in the conversion virtual signal pin number (52) is ○N10FF403), and the virtual signal line buffer (1
b) (404).

Furthermore, when the contents of the virtual signal line register (1b) change, that is, when a signal line control command is written from the central control unit (31), the signal line control conversion table (37b) changes.
) and convert the virtual signal pin number (53) controlled by the written command to the real signal pin number (54)
The central control unit (
Convert the signal line control command written from 31,) 413) and write it into the actual signal line register (1α) (414)
).

Here, if there is no change, the actual signal line register (1
α) or the virtual signal line buffer (1b).

Then, according to the procedure shown above, the signal line conversion process is repeated until all processes of the communication device (22) are completed.

As a result, the central control unit (31) monitors and controls the real signal line on the communication port, and the virtual signal line buffer (1b
), and the data terminal (21
) can be processed without being aware of the difference in pin position of the signal line.

As described above, this embodiment has the advantage that even models in which the signal pin positions of the signal lines of the communication ports are different can be interconnected.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the position of the signal pin of the signal line on the communication port of the communication device can be changed arbitrarily according to the user's settings, so the signal This has the effect of making it possible to connect data terminals with different line signal pin positions.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing an example of a signal line conversion processing operation according to the present invention, Fig. 2 is a diagram showing an example of connection of a communication device using the present invention, and Fig. 3 is a schematic diagram showing an example of a communication device using the present invention. FIG. 4 is a flowchart showing an example of the signal line conversion procedure in the present invention; FIG. 5 is a diagram showing an example of a conversion table that stores conversion information; FIG. FIG. 3 is a diagram showing an example of a signal line setting screen for setting. 1a... Real signal line register, 1b... Virtual signal line buffer, 21... Data terminal, 22... Communication device, 3
1... Central control section, 32... Signal line setting section,
33...Signal line conversion program, 37α...Signal pin conversion table. 37b...Signal line control conversion table. Collected illustrations and words Jj8《j《芻挻文 1哩(α) Figure (b) Falcon diagram

Claims (1)

[Claims] A central control unit, a network control unit that controls communication with a public network,
In a communication device that is equipped with a communication port that exchanges information with an external data terminal, a control section thereof, a memory section that stores various information, and a display section, a user can input signals on a signal line at the communication port of the communication device. a signal line setting means for setting the pin position; a conversion table for storing information set by the signal line setting means in the memory section; and a central control section for recognizing the state of the signal line and controlling the signal line. a virtual signal line buffer used for the conversion table; and a signal line conversion means for converting the signal line control command from the central control unit and the state of the actual signal line of the communication port control unit according to the conversion information in the conversion table. This signal line conversion method is characterized by: