JPH0573293A - Data communication system - Google Patents

Abstract

PURPOSE:To obtain a data communication system whose control of the ready- made program stored in product media used in each system dispersed and arranged through a network is easy. CONSTITUTION:As a ready-made program 1Q used by respective systems A and B, the program to add a characteristic identifier 1X for product media 1 to store it is used, and at the time of establishing a communication line using the program 1Q, the identifier information added to the program 1Q is sent to an opponent side system, and at the opponent side system to receive the identifier information, the identification information is stored in an identifier list 5 and the retrieval, etc., of the presence of the same identifier information in the identifier list 5 are performed. Then, the data communication system whose program control such as the confirmation of the original media of the ready-made program 1Q used by respective systems A and B on the network and the checking of the illegal copy use of the program is easy can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data communication system between systems distributed over a network, and more particularly to improvement of a management system for ready-made programs used for the communication.

[0002]

2. Description of the Related Art Generally, a program used in each system in a data communication system is a ready-made program stored in a medium such as a magnetic tape or a floppy disk and provided as a product. FIG. 3 is a conceptual diagram showing a usage pattern of such a program in a conventional communication system. In the figure, A, B and C are distributed systems, and N is a communication path between these systems A, B and C. Network that forms a computer, 1 is a floppy disk in which a ready-made program 1P is stored and is provided as a product, 2
A and 2B are fixed magnetic disks of the respective systems A and B that store the program 1P read from the floppy disks 1A and 1B, and 3A and 3B are fixed magnetic disks 2A and 2B.
Computers 4 of the systems A and B that read the program 1P from B and execute data communication with the system C, for example, are programs that operate in the system C and perform data communication with the systems A and B.

Next, the operation will be described. First, when the system A is configured, the program 1P is read from the floppy disk 1 provided as a product and stored in the fixed magnetic disk 2A. Then, program 1P
In order to perform data communication between the system A and the system C using the computer, the fixed magnetic disk 2 is used by the computer 3A.
The program 1P stored in A is read, and first, according to the program, a communication for establishing a communication path in the network N is first performed between the two, and once the communication path is established, the program 1P is established via this communication path. And program 4
Data communication is performed between the two. Data communication is performed between the system B and the system C by similar processing.

[0004]

The conventional data communication system is configured as described above, and is carried out by using the ready-made program 1P which is read and stored in the own system from the floppy disk 1 provided as a product in each system. However, even if the contents of the program 1P are the same even if the contents of the program 1P are the same, the other floppy disk 1 provided as a product in each system
It is hoped that each system will be read by.
However, in this conventional method, there is no means for finding out the illegal copy of a ready-made program, for example, copying the floppy disk 1 and using it in another system B.
Further, a copy protection means for an off-the-shelf program has been proposed in the past, but it prohibits the copy itself of the program, and there is a problem that a legitimate copy such as a backup copy cannot be obtained.

The present invention has been made in order to solve the above problems, and it is possible to easily find an illegal copy of an off-the-shelf program, and moreover, it is a legitimate one performed in the same system as a backup copy. The purpose is to obtain a data communication method that uses a ready-made program that can be copied.

[0006]

The data communication system according to the present invention uses an off-the-shelf program to which a unique identifier is added for each product medium in which the program is stored, and the program is applied to each system. Identifier transmission means for transmitting the identifier information added to the above-mentioned program to the other party system when establishing a communication path using, and storing the identifier information sent from the other party in the identifier list, the same identifier in the identifier list It is provided with an identifier management means for searching for the presence or absence of information.

[0007]

In the data communication system according to the present invention, the identifier information added to the ready-made program used is sent to the partner system by establishing a communication path with another system and stored in the partner system identifier list. Because it is done
If the same off-the-shelf program is used for data communication from multiple systems to the same remote system by illegal copying from the same product medium, the same identifier information is used in the identifier list of the remote system. The illegal copy can be easily found by searching the presence / absence of the same identifier information in the identifier management means. However, even if the copied program is used in the same system, there is no problem because it is not considered as illegal copy unless it is used in another system.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a conceptual diagram showing an embodiment of the present invention. In the figure, A, B and C are distributed systems, N is a network, 1 is a floppy disk as a product medium, and 1Q is these floppy disks. Off-the-shelf programs stored on the disk 1, 1X is an identifier unique to this floppy disk 1 added to these off-the-shelf programs 1Q, 2
A and 2B are fixed magnetic disks of each system A and B, 3
A and 3B are computers of the respective systems A and B, 4 is a program which operates in the system C, and 5 is an identifier list which stores the identifier information sent from the communication counterpart systems A and B.

FIG. 2 is a schematic configuration diagram showing one system in this embodiment. In the figure, 1Q, 1X, 3 and 5 are shown.
Is a ready-made program, an identifier, a computer, and an identifier list in any (or other) of the systems A, B, and C of FIG. Reference numeral 6 is a communication partner system which is any (or other) of the systems A, B and C of FIG. 1, and 7 is a communication path for establishing a communication path with the partner system 6 in the network N when starting communication. Establishing means, 8 is a data transmitting / receiving means for transmitting / receiving data to / from the partner system 6 on the established communication path, and 9 is information of the identifier 1X added to the program 1Q used in accordance with the communication path establishment by the communication path establishing means 7. Identifier sending means for sending the
0 stores the identifier information sent from the partner system 6 in the identifier list 5 or the identifier information of the program used for the released communication when the communication path is released by the communication path establishing means 7. It is an identifier management means for deleting from the identifier list or searching for the presence or absence of the same identifier information in the identifier list 5.

Next, the operation will be described assuming that the same floppy disk 1 of the systems A and B is illegally copied and used. First, in the systems A and B, the program 1 is transferred from the floppy disk 1 provided as a product and a copy thereof to the fixed magnetic disks 2A and 2B, respectively.
Q is read and stored with the identifier 1X attached to it.

Then, assuming that data communication is first performed between the system A and the system C using the program 1Q, the fixed magnetic disk 2 is made available by the computer 3A.
The program 1Q stored in A is read out together with the identifier 1X, and according to the program, the communication path establishing means 7 performs a communication between the two to establish a communication path in the network N, and when the communication path is established. The identifier sending means 9 sends the information of the identifier 1X in the program 1Q to the system C which is the partner system 6, and the data sending / receiving means 8 sends the information of the program 1Q and the program 4 of the system C via this communication path. Data communication is performed between them. The identifier information sent from the system A to the system C is stored in the identifier list 5 by the identifier management means 10 of the system C.

Next, before the communication path between the system A and the system C is released, data communication is performed between the system B and the system C by using the same program 1Q as the illegally copied system A. When the same process as described above is performed and the communication path is established by the communication path establishing means 7 of the system B, the identifier sending means 9 sends the information of the identifier 1X to the system C, and this identifier information is also the identifier of the system C. The management means 10 stores the identifier in the identifier list 5, searches the already stored identifier, and compares it with the newly received identifier. As a result, it is found that the same identifier already exists. It can be confirmed that any of the programs in B is based on illegal copying. When the communication path is released by the communication path establishing means 7, the identifier managing means 10 deletes the identifier information of the program used for the released communication.

In the above embodiment, an example of determining whether or not the programs being used at the same time are illegally used is shown. However, the identifier list is made up of a pair of identifier information and the address of the system using the program of the identifier. By managing it on a disk file, it is possible to check the original medium of the program used on each system.

[0014]

As described above, according to the present invention, an off-the-shelf program to which a unique identifier is added for each product medium in which it is stored is used, and this program is used for each system. Identifier sending means for sending the identifier information added to the program to the partner system at the time of establishing the communication path, and storing the identifier information sent from the partner side in the identifier list, and storing the same identifier information in the identifier list. Since it is equipped with an identifier management means for searching for the presence or absence, confirmation of the original medium of the ready-made program used in each system on the network,
This has the effect of providing a data communication method that facilitates program management, such as checking the illegal use of programs.

[Brief description of drawings]

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

FIG. 2 is a schematic configuration diagram showing one system in this embodiment.

FIG. 3 is a conceptual diagram showing a usage pattern of a ready-made program in the conventional method.

[Explanation of symbols]

 A, B, C each system N network 1 product medium (floppy disk) 1Q ready-made program 1X identifier 2A, 2B fixed magnetic disk 3A, 3B computer 5 identifier list 6 partner system 7 communication path establishing means 8 data transmitting / receiving means 9 identifier transmission Means 10 Identifier management means

Claims (1)

[Claims] 1. A system, which is distributed through a network, uses an off-the-shelf program stored in a medium, provided as a product, and read by a local system to transmit / receive data to / from a partner system. In the data communication method for performing the above, the above-mentioned ready-made program to which a unique identifier is added for each product medium is used, and the above-mentioned program is used for each system when the communication path is established by using this program. Identifier sending means for sending the identifier information added to the program to the other system,
A data communication system, comprising: an identifier management means for storing the identifier information sent from the other party in an identifier list and searching for the presence or absence of the same identifier information in the identifier list.