JPH01309443A - Communication system - Google Patents

Abstract

PURPOSE:To send a text freely to final destination over a communication line by providing a final destination description part and a sender description part in a text and describing a path to be passed through, final destination, a path passed through so far and a sender in them. CONSTITUTION:A text 1 sent from a terminal equipment onto a communication line has no sender description part but a final destination description part 7 only, where the final destination and the communication information to be passed through are provided. The initial communication line information of the final destination description part 7 in the text 1 is eliminated and a new sender description part 8 is generated and the sender and the communication line belonging thereto are described in the part 8. Thus, the text has no final destination description part but has only the sender description part in the communication line to which the final destination belongs. Thus, the wide communication bridged over the communication lines in a composite communication line is executed by the text of new constitution.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a communication system in a composite communication channel in which a plurality of communication channels are connected to a plurality of terminals each having a communication function.

2 ・・-/ Conventional technology When communicating in a composite communication path where multiple terminals with communication functions are connected, conventionally, as in the standard specifications for home bus systems, adjacent It was not possible to freely write the final destination in a message, for example, the destination could only be specified up to the terminal on the communication path.

Problems to be Solved by the Invention In the conventional technology described above, the destination can only be written in a message up to the communication between terminals on adjacent communication channels, and cannot be applied to communication over a wider range of complex communication channels. Ta. SUMMARY OF THE INVENTION In view of the above-mentioned problems, an object of the present invention is to provide a communication system having a message structure that can be applied to communication over a wider range of composite communication channels in which a plurality of communication channels are connected.

Means for Solving the Problems In order to achieve the above object, the present invention includes a message in which, following a description section such as a destination related to communication within each communication path, a final destination description section and an initial transmission source of the message are provided. The description section and instruction information regarding the destination are placed before the 3rd data section of the message, the two description sections each have a communication channel code and terminal address, and the final destination description section is where the message will be routed from now on. The configuration is such that the route information to be sent is described, and in the sender description section, the route information that the message has passed in this size is described. The message configured in this way is transferred within the composite communication channel after undergoing processing via the connecting communication device (mind) that connects the communication channels.

Operation A message having the above-described structure according to the present invention is sent from a certain terminal onto a communication path, transferred through a combined communication device within a composite communication path, and then sent to the final destination.

The message that a terminal sends out on a communication path has no source description section, only a final destination description section, and has information about the final destination and the communication path that should be taken to get there. At the first coupled communication device, the first part of the communication path information in the final destination description section is removed from this message, and a new source description section is generated, in which the sender and the communication path to which it belongs are described. Ru.

In this way, the message sequentially passes through the coupling communication device, and within the communication path to which the final destination belongs, the message does not have a final destination description section, but only has a source description section. In this way, it is possible to perform communication between communication channels in a wide range of composite communication channels using the new configuration of telegrams.

Embodiment FIG. 1 is a configuration diagram of a message on a communication path in one embodiment of the present invention. FIG. 2 is an example of a composite communication path consisting of a plurality of communication paths provided with a communication function according to an embodiment of the present invention. Message 1 in FIG. 1 is an example of a message sent from terminal Y22 in FIG. 2 to terminal X21 on communication path B17. In FIG. 1, 2 is the transmission source of the message 1, which is the combined communication device 20 in FIG. 3 is the destination of the message 1, which is the combining device 19 in FIG. 4 stores information related to communication.

5 represents the number of data from the instruction information 6 to the data section 9 in the final selection. 6 is the final destination description section 7 and the source description section 8
Store information about. 7 is a final destination description section that describes the route and destination to the final destination in communication spanning multiple communication channels, 11-6 \-/ route description section and 12 address section (terminal X21 in Figure 2). ), 3 and 8 are source description parts that describe the address of the first sender and the route taken so far in communication spanning multiple communication paths, and 13 route description parts and 14
(representing terminal Y22 in FIG. 2).

9 is a data section in which the contents of the message are described. 10 is a check code, whereby message 1 is checked for errors during communication.

This message 1 is sent from the coupled communication device 2Q in FIG. 2 to the coupled communication device 19, where it undergoes route processing and is transferred to the final destination terminal X21i.

In FIG. 2, a composite communication path 16 is composed of one communication path A16° communication path B17 and a communication path 018.

The combined communication device 19 connects the communication path A16 and the communication path B17, and the combined communication device @20 connects the communication path B17 and the communication path 01.
Connect 8. A terminal X21 is connected to the communication path A16, and a terminal Y22 is connected to the communication path 018.

Effect of the invention 6 ・＼-/ As described above, the present invention provides a final destination description part and a sender description part in a message in a composite communication path consisting of a plurality of communication paths, and provides a final destination description part and a sender description part in each communication path. By describing the route that should be taken from now on, the final destination, the route that has been taken so far, and the sender, the message can be freely sent across the communication path to the final destination.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a message on a communication path in an embodiment of the present invention, and FIG. 2 is a block diagram of a composite communication channel equipped with a communication function in an embodiment of the present invention.

Claims (1)

[Claims] A plurality of communication paths having the same or different communication procedures, each of which connects a plurality of terminals with communication functions, are connected to each other via a coupling communication device, thereby forming a composite communication path consisting of the plurality of communication paths as a whole. For messages transmitted via one or more coupled communication devices, a final destination description section is provided following the description section for destination information within each individual communication path, and this section contains the communication path information to be passed through and the final destination. What is claimed is: 1. A communication system characterized in that a transmission source description section is provided, and the communication path information and transmission source transmitted through the section are described.