JPH01160236A - Communication system - Google Patents

Abstract

PURPOSE:To allow the system to cope with the combination of plural communication procedures without need of plural number of conversion processing modules by providing a module mapping once a communication data from an equipment at the transmitter side and transmitting the result newly to an equipment at the receiver side on a repeater. CONSTITUTION:When a user request (transmission reception request, etc.,) comes from a user module 1a of an equipment 1 at the transmitter side, it is outputted to a request control module 1b. The request control module 1b converts the user request into prescribed communication information. The communication information is sent from a communication control module 1c and mapped once by a map control module 2b via a transmission line L1 and a communication control module 2a of a repeater 2. Then the map control module 2b gives the communication information to a communication control module 2c. Then the communication control module 2c sends the mapped user request by a communication procedure of a procedure B newly and an instrument at the reception side receives the user request by the procedure B.

Description

DETAILED DESCRIPTION OF THE INVENTION [Objective of the Invention (Field of Industrial Application) The present invention relates to a communication system comprising a transmitting device, a relay device, and a receiving device.

<Prior Art> Conventionally, there has been a transmission side device that has a predetermined communication procedure (protocol) and sends some kind of request, a reception side device that has a communication procedure different from the communication procedure and receives the request, and the transmission side A communication system consisting of a relay device interposed between a device and the receiving device is widely used.

The relay device in this system is generally called a gateway, and serves as a bridge between different communication procedures.
For example, large computers, various terminals, office computers,
It is used, for example, when connecting personal computers, telephones, facsimiles, etc. to a network through optical fibers.

By the way, a relay device in a conventional communication system of this type is equipped with a conversion module that simply converts communication procedures on a one-to-one basis, so steps A→B, steps C-4D, etc.
When performing multiple procedure conversions such as..., it was necessary to provide multiple conversion modules accordingly.

(Problems to be Solved by the Invention) In this way, in the conventional communication system, one conversion module corresponds to one procedure conversion in the relay device, so the number of communication procedures that can be converted is limited. The problem was that it was limited.

The present invention was made under these circumstances, and aims to provide a communication system that can accommodate a large number of combinations of communication procedures without requiring a plurality of conversion modules.

[Configuration of the Invention (Means for Solving Problems)] In order to achieve this object, the present invention includes a transmitting side device that has a predetermined communication procedure and sends some kind of request, and a communication procedure that is different from the above communication procedure. In a communication system comprising a receiving device that receives the request, and a relay device interposed between the transmitting device and the receiving device, the request of the transmitting device is once mapped, and the reproduced content is reproduced. The relay device is provided with a module that newly transmits data using a communication procedure that can be reproduced by the receiving device.

(Function) In the communication system of the present invention, the relay device is provided with a module that not only converts the communication procedure but also maps the communication data from the sending device and sends it to the new receiving device. , communication can be performed between devices with any communication procedure as long as the relay device itself can transmit and receive communication procedures.

(Example) Hereinafter, details of an example of the present invention will be described based on the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

In the figure, 1 is a transmitting side device that generates a request to be transmitted and transmits it using a unique communication procedure, B is a relay device that can receive and transmit requests using a plurality of different communication procedures, and C is a transmitting side device that is capable of receiving and transmitting requests using a plurality of different communication procedures. is a receiving side device that has a different communication procedure and must perform processing corresponding to the request from the sending side.

In the sending device 1, 1a is a user module serving as a man/machine interface, 1b is a request control module that holds and controls user requests to be sent, and 1c is a module that sends the user requests using a unique communication procedure. It is a communication control module.

In the relay device 2, 2a is a communication control module that receives user requests using the specific communication procedure, 2b is a mapping control module that temporarily maps the received user requests,
2c is a communication control module that transmits the mapping using a communication procedure different from the communication procedure described above.

Furthermore, in the receiving side device 3, 3a is a reception control module that receives the mapping transmitted by the relay device using a corresponding communication procedure, and 3b is a user module as a man/machine interface.

Note that L+ and L2 are transmission lines.

In the system of this embodiment, first, when a user request (such as a transmission/reception request) is generated from the user module 1a of the sending device 1, this is output to the request control module 1b.

The request control module 1b converts this user request into predetermined communication information. This communication information passes through the communication control module 1c, the transmission line L1, and the communication control module 2a of the relay device 2, and is once mapped in the mapping control module 2b.

The mapping control module 2b then passes this communication information to the communication control module 2c.

At this point, a new user request is generated in the relay device 2, but its content is the same as the user request initially output from the user module 2 of the sending device 1.

In other words, in the system of this embodiment, a process is performed in which a user request from a transmitting device is once mapped by the mapping control module 2b of the relay device 2 and then transmitted, and the procedure itself is converted on a one-to-one basis. Not yet.

In conventional communication systems, for example, as shown in FIG.
In step A), the relay device mechanically converts procedure A of the user request into procedure B, and in step B), the receiving device receives the user request according to procedure B (step C).

On the other hand, in the system of this embodiment, as shown in FIG. 3, for example, when the transmitting device sends a user request according to procedure A (step A), the relay device receives it according to procedure A and sends the user request. In step B), the mapped user request is newly sent in step C), and the receiving device receives this user request in step B (step D).

As described above, the relay device in this embodiment has the same transmitting and receiving functions as the conventional relay device when viewed from the outside, but it differs from the conventional relay device in that the received data is once mapped internally and then newly transmitted. It's different.

Therefore, the relay device of this embodiment can bridge communication between any transmitting/receiving device or receiving device as long as it has a communication procedure that it supports (capable of sending and receiving).

Also, such relay devices can be interposed at multiple locations on the transmission path as necessary.

[Effects of the Invention] As explained above, in the system of the present invention, a user request generated in a transmitting device is once mapped in a relay device, and the mapped request is newly transmitted to a receiving device. It is possible to correspond to a large number of combinations of communication procedures without requiring a conversion processing module.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, and FIGS. 2 and 3 are diagrams explaining the differences between a conventional communication system and the system of this embodiment. 1... Sending side device, 1a, 3b... User module, 1b... Request control module, IC12a, 2C
13a... Communication control module, 2... Relay device,
2b... Mapping control module. Applicant Toshiba Corporation Representative Patent Attorney Sasa Suyama −

Claims (1)

[Claims] (1) A transmitting device that has a predetermined communication procedure and sends some kind of request, a receiving device that has a communication procedure different from the communication procedure and receives the request, and a communication between the transmitting device and the receiving device. In a communication system consisting of a relay device interposed in between, the request of the sending device is once mapped,
A communication system characterized in that the relay device is provided with a module that newly transmits reproduced content using a communication procedure that can be reproduced by the receiving device.