JPH03238954A - Protocol conversion system - Google Patents

Abstract

PURPOSE:To allow the system to easily cope with revision of a protocol type to be handled by executing one processing program unit in a processing program based on a current processing state stored in a memory. CONSTITUTION:A communication processing procedure in plural protocols is decomposed respectively into program units and they are included in a processing program group 4. Types of protocols and each stage (state) in a communication procedure in the communication procedure starting from the reception of a signal in one protocol are stored in a memory 3, and a processing program unit decision means 5 executes one processing program unit in the processing program group 4 based on a current processing state stored in the memory 3. Thus, the system easily copes with revision of a protocol type to be handled simply.

Description

[Detailed Description of the Invention] [Summary] Regarding a system that is installed between systems that communicate using different protocols and that requires protocol conversion, the present invention is simple and can easily accommodate changes in the types of protocols handled. In a protocol conversion system that performs protocol conversion between a plurality of protocols, the system includes a plurality of receiving means that respectively receive signals transmitted by each of the plurality of protocols, and a plurality of reception means that respectively receive signals transmitted by each of the plurality of protocols, a plurality of transmitting means for respectively transmitting information, a memory for storing a current processing state, a processing program group having a plurality of processing program units; and processing program unit determining means for controlling execution of one processing program unit.

[Industrial application field]

The present invention relates to a protocol conversion system that is installed between systems that communicate using different protocols and performs protocol conversion.

In distributed processing information processing systems, etc. in which information processing devices from different manufacturers are connected via an information network, the protocols used by each information processing device to communicate are often different from each other, and The information processing devices connected to the distributed information processing system may also be changed.

Therefore, between systems that communicate using different protocols, a protocol conversion system is required that performs protocol conversion to absorb differences in data formats and communication sequences in each protocol. It is desired that a protocol conversion system be simpler and more easily adaptable to changes in the types of protocols handled.

[Prior art and problems to be solved by the invention] Conventionally, in a system that includes devices that communicate using a plurality of different protocols, it has been necessary to provide a protocol conversion program for each conversion source and conversion destination protocol. . Therefore, when connecting a device with a new protocol type to the system, it is necessary to create a new protocol conversion program between this protocol and all existing protocols, which requires a large amount of work in program development and maintenance. The problem was that it was necessary.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a protocol conversion system that is simple and can easily adapt to changes in the types of protocols handled.

[Means to solve the problem]

FIG. 1 is a diagram showing the basic configuration of a protocol conversion system that performs protocol conversion between a plurality of protocols according to the present invention.

In FIG. 1, 1 is a first receiving means, 2 is a second receiving means, 3 is a memory, 4 is a processing program group, 5 is a processing program unit determining means, 6 is a first transmitting means, and
7 is a second transmitting means.

The first receiving means 1 receives a signal transmitted according to the first protocol among the plurality of protocols described above.

The second receiving means 2 receives a signal transmitted according to a second protocol among the plurality of protocols described above.

The first transmitting means 6 transmits a signal using the first protocol among the plurality of protocols described above.

The second transmitting means 7 transmits a signal using the second protocol among the plurality of protocols described above.

Memory 3 stores the current processing state.

The processing program group 4 includes a plurality of processing program units.

The processing program unit determining means 5 controls execution of one processing program unit in the processing program group 4 based on the current processing state stored in the memory 3.

[Effect]

Communication processing procedures in a plurality of protocols are each broken down into program units and included in the processing program group 4.

In a communication procedure that starts with reception of a signal according to one protocol, the type of protocol and each stage (state) in the communication procedure are stored in the memory 3, and the processing program unit determining means 5 stores them in the memory 3. Based on the current processing state, one processing program unit in the processing program group 4 is controlled to be executed.

In this way, communication processing procedures for multiple protocols are broken down into program units and included in the processing program group 4, so additions, changes, etc. are easy, and as in the past, each conversion source and destination Since there is no need to provide a protocol conversion program for each protocol, the parts of the program that were the same in the conventional protocol conversion program for each conversion source and conversion destination protocol can be shared as the above program unit. , the program configuration is also simplified.

〔Example〕

FIG. 2 shows a schematic configuration of one example to which the present invention is applied.

Figure 2 shows a system A that communicates using protocol a.
However, protocols b and c are different from each other.

Systems B and C communicate via d and e.

A configuration is shown having a plurality of protocol conversion systems 21, 22, 23, and 24 provided for communicating with D and E, respectively.

FIG. 3 shows the configuration of an embodiment of the protocol conversion system of the present invention.

In FIG. 3, 11 is a program for the reception process of protocol A, 12 is a program for the reception process of protocol B, 13 is a memory, 14 is a processing matrix on the protocol A side, 15 is a processing matrix on the protocol B side, 1
6 is a processing program group, 17 is a protocol A transmission process program, and 18 is a protocol B transmission process program.

An example of the contents of processing matrices 14 and 15 of FIG. 3 is shown in FIGS. 4 and 5.

The processing matrix 14 in FIG. 4 and the processing matrix 15 in FIG. 5 respectively indicate the reception state and transmission state of the request signal α, the reception state and transmission state of the response signal β, and, although not shown, the data collection request Processing program units (Processing 1, Processing 2,... Processing 1', Processing 2', Processing 3',... The processing matrix 14 in FIG. 4 indicates which processing is to be performed next among the following. The processing matrix 14 in FIG. indicates a state in which the previous process was performed according to protocol b.

FIG. 6 schematically shows an example of a communication procedure between system A and system B in the configuration of FIG. 2.

Upon receiving a request signal α' for system A according to protocol b from system B, the protocol conversion system converts it into a request signal α according to protocol a of system A and transmits it to system A.

In response, system A returns a response signal β according to protocol A, but the protocol conversion system converts the response signal β into a response signal β' according to protocol b and transmits it to system B.

The above procedure is executed as follows using the configurations of FIGS. 3, 4, and 5 of the embodiment of the present invention.

Upon receiving a request signal α' for system A according to protocol b from system B, the protocol conversion system of the present invention refers to processing matrix 15 of FIG.
Since the state is "reception of request signal α'", the program of process 1' in the process program group 16 is executed.

As shown in FIG. 5, in process 1', a request α is sent to system A according to protocol a. The processing state is then set in the memory 3.

Next, based on the settings of the memory 3 described above, the processing matrix 14 in FIG. 4 is referred to, and since the state is "transmission of request signal α", the program of processing 1 in the processing program group 16 is executed. .

As shown in FIG. 4, in process 1, a response β from system A is waited. When the response β is received from the system A, since the status is “reception of response signal β”, the program of process 2 in the process program group 16 is executed with reference to the process matrix 14 in FIG. do.

In process 2, a response β' is transmitted according to protocol b.

Since the processing according to protocol b has been performed, referring again to the processing matrix 15 in FIG. 5, the processing program group 16
Execute the program in process 2'.

In process 2', a response T' is sent according to protocol b.
Send.

Next, since the state is "transmission of response signal T'", the program of process 3' in the process program group 16 is executed.

As shown in FIG. 4, in process 3', the process that begins with the reception of the request signal α' from system B is completed, and the protocol ring and transmission/reception process are initialized.

〔Effect of the invention〕

According to the present invention, a protocol conversion system is provided that is simple and can easily adapt to changes in the protocol ring to be handled.

[Brief explanation of drawings]

FIG. 1 is a basic configuration diagram of the present invention. FIG. 2 is a diagram showing a schematic configuration of an example of the application of the present invention. FIG. 3 is a configuration diagram of an embodiment of the present invention. 5 is a diagram showing an example of the contents of the processing matrices 14 and 15 in FIG. 3, and FIG. 6 is an example of a communication procedure between system A and system B in the configuration of FIG. FIG. [Explanation of symbols] 1-first receiving means, 2-second receiving means, 3-memory, 4-processing program group, 5-processing program unit determining means, 6-first transmitting means, 7-th 2. Transmission means;
11-Program of the receiving process of protocol A, 12
-Program of protocol B reception process, 13.-
Memory, 14-Protocol A side processing matrix, 15
-Protocol B side processing matrix, 16-Processing program group, 17-Protocol A transmission process program, is-Protocol B transmission process program. System A Col b Col C Col d Col e System System System System CDE Diagram illustrating an example of a configuration to which the present invention is applied No. 1 Protocol Atl! Figure 4rj showing the contents of the processing matrix 14 of Figure 3
iJ protocol B side teple

Claims (1)

[Claims] A system in which it is necessary to perform protocol conversion between a plurality of protocols, comprising: a plurality of receiving means (1, 2) each receiving a signal transmitted by each of the plurality of protocols; a plurality of transmitting means (6, 7) for respectively transmitting signals according to each of the protocols; a memory (3) for storing the current processing state; and a processing program group (4) having a plurality of processing program units; and processing program unit determining means (5) for controlling execution of one processing program unit in the processing program group (4) based on the current processing state stored in the memory (3). A protocol conversion system characterized by: