JPH11232238A - Network control device, its method and storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently execute application by connecting plural work stations to a network and integrally executing information transmission processing between a plurality of clients, between a client and a server and between a plurality of servers. SOLUTION: Respective work stations (WSs) 21 to 25, 2n circulate circulated network control right 20 on a circulation route 30, respectively act as a client or servers 21a to 25a, 2na and integrally execute information transmission processing between respective WSs. Of the WS 23 generating a fault is detected, the WS 23 is separated from the network by by-passing it. When a certain WS is not provided with a terminal function necessary for the execution of application, another WS is substituted for the WS concerned. An optional WS can request the information transmission processing of the application as a client or a server in another WS.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to the operation of a network when a plurality of personal computers, workstations, communication terminals and the like are connected to a network and constitute a network system as a client, a database server or an application server. TECHNICAL FIELD The present invention relates to a network control device and method for controlling a computer and a recording medium.

[0002]

2. Description of the Related Art A network for interconnecting a plurality of computers is roughly classified into a LAN (Local Area Network) for performing communication within a limited area such as in a company and a communication for covering a wide area. WAN (Wide Area
Network). Typical connection modes of the LAN include, for example, a star type LAN connecting an office telephone and a digital PBX, a bus type LAN connecting a large number of terminals to one cable, and a physical bus type. L
In an AN, there is a ring-type LAN in which a token having access right = transmission right is circulated to form a transmission path in a ring shape. Network computing includes time sharing in the 1960s, distributed processing in the 1970s,
It has been developed into full-scale network computing in the 1990s through LANs and the like in the 1980s. Among them, the most advanced form of network computing is a client-server system.

In the client-server system, which is a powerful tool for downsizing, shared resources including software functions are provided on a computer serving as a server, and a client computer serving as a user receives support from the server. And cooperate in such a manner that one process is distributed to a computer serving as a server and a computer serving as a client. Usually, a computer serving as a client takes charge of a user interface, and a computer serving as a server performs a substantial part of processing. For example, in database processing, for a database management system application on a computer serving as a server, the database access part that is the core of the processing is placed on the server, and the front-end part of the server is connected to the client-side computer via a network. Request / response format.

In such a client-server type network system, the computer on the server side can concentrate on database processing. Since the client-side computer is only responsible for the user interface, the computing power may be relatively small. Since communication between the client and the server only needs to be performed when necessary, the load on the network is reduced. Multiple servers can be connected to the network. An easy-to-use GUI (graphic user interface) can be used. Features such as

In such network computing, a network operating system for performing input / output control in accordance with a standard protocol which is an agreement for data communication.
Is used.

[0006] In the network field, there are many users who use computers. In order to utilize information resources in a wide range in a network, it is necessary to cope with a connection environment of multi-vendor devices. Further, an application programming interface (API) having a function including shared exclusion control is required. Others will require a fault tolerant or a suitable disaster recovery system. In addition to the client-server system, there is a peer-to-peer (Peer to Peer) LAN system having no dedicated server, but it is used for a relatively small-scale system.

[0007] Against the background of the remarkable technological innovation of computers and LANs, in an advanced office environment, personal computers and workstations are introduced one by one to improve productivity. However, even if the performance of personal computers and the like is improved, as long as they are used in a stand-alone closed world, the same kind of software development due to wasteful investment similar to double investment, ie, lack of mutual communication and coordination. Waste, time and resources for double installation, and so on. One method for eliminating such waste is to build an environment in which personal computers and the like are interconnected by a LAN and function as a single computer system as a network system. When such an environment is constructed, various resources such as data, software, and a printer can be shared, and improvement in productivity and reduction in office cost can be expected.

The above-mentioned ring type LAN (token ring type LAN) was developed at IBM's Zurich Basic Research Institute located in Switzerland, and was prototyped at TELECOM 83 held in Geneva, Switzerland in October 1983. For the first time, and in 1984 it was standardized as an IEEE standard. In the token ring type LAN, the token circulates in the ring, and a personal computer or the like that has captured the token has a transmission right. For example, when X sends data to Y, X first captures the free token that is circling, attaches a packet of transmission data with destination = Y and source = X to the token, and puts it on the ring. Y seizes the token, takes in the data addressed to itself, and after receiving the token, puts out the token on the ring. When the token arrives at X, X confirms the contents, determines the normal completion of transmission / reception, removes the packet of transmission data, and returns the token to the ring in a free form. Further, the use efficiency of the LAN is improved by releasing the token early and transmitting data simultaneously from a plurality of personal computers on one ring.

In 1978, one of the computer LANs
HAYAC 6000 manufactured by Sharp Corporation
2. Description of the Related Art A system has been disclosed in which a computer interface unit (CIU) device for a type office computer circulates data transmission rights in a daisy-chain system in which computers are connected by a cable and transmits and receives data between the computers.

Prior art relating to a client-server type network system is disclosed in, for example, Japanese Patent Publication No. 2650210 issued on Sep. 3, 1997. In this prior art, the resources possessed by a host computer and a plurality of processing devices connected to a network line can be used by all the processing devices connected to a network, and each processing device can be used when a shared resource is used. Operability is improved.

[0011]

In a client-server type network system, a shared database is concentrated on a server computer, or a shared database and application processing are concentrated on a server computer. Alternatively, the system is shared between the client and the server. However, the needs for sharing a local database owned by the client computer and for directly transmitting information between clients are not always satisfied. Peer-to-peer systems mainly targeting small LANs do not require a dedicated server and support information transmission between clients, but are applicable only to small LANs It has not been. Therefore, while utilizing both the characteristics of the client-server method and the peer-to-peer method, a network system including a personal computer in a home or office, a network computer, and other terminal devices can establish a connection between clients. A unified system that allows access to applications in the network from any workstation, responding to the modification and expansion of systems including multi-vendor equipment configurations between client and server, and between servers There is a demand for a tool that can provide a simple network application environment.

An object of the present invention is to provide a network control device and method, and a recording medium that can easily form a unified computer network application environment.

[0013]

According to the present invention, there is provided a network control device in which a plurality of processing devices are connected so as to be able to transmit information as a client, a database server or an application server. Circulating network control means for circulating the network control right for controlling the information transmission process between the client and the server or between the server and the server together with the network control information in a changeable time unit. A network information processing means for performing application information transmission processing between a client and a client, between a client and a server, or between a server and a server, wherein a network control right is transferred. Network information processing means comprising processing device, direct billing information transmission processing of the application to the network information processing means of another processing device,
Alternatively, the network information processing means of the processing device having the circulating network control means requesting on the network control information sent together with the circulating network control right is transferred to the information transmission of the claimed application A network control device that performs processing.

According to the present invention, a plurality of processing devices are connected to a network in a manner capable of transmitting information as a client, a database server, or an application server. Each processing device includes a circulating network control unit and a network information processing unit. The circulating network control means controls a network control right for controlling an information transmission process between a client and a client, between a client and a server, or between a server and a server, in a changeable time unit. Circulate with information. The network information processing means performs application information transmission processing between the client and the client, between the client and the server, or between the server and the server. When the network control right is transferred from the circulating network control means of another processing apparatus to the circulating network control means, the processing apparatus having the circulating network control means directly
Alternatively, the information processing of the application requested on the network control information circulated together with the network control right is performed, so that the processing device performing the information transmission process on the network is centrally managed by the processing device having the network control right. You. As a result, it is possible to avoid a situation in which data transmission is performed simultaneously in the network and data collision occurs and data retransmission is required, and an efficient information transmission process is performed to effectively utilize various resources. be able to. In other words, when the network control right is transferred from the circulating network control means of another processing device, the network information processing means of the client or server having the network control right is transferred from the network information processing means of the other client or server. Information transmission processing. Therefore, data transmission is simultaneously performed from a plurality of processing devices in the network, and the problem associated with data collision can be avoided. In the processing device of the billing destination, which performs the processing in response to the request for the information transmission processing, the information transmission processing of the requested application including the related database processing, etc., based on the environment for the actual information transmission processing. Can be performed collectively. A billable application can efficiently perform information transmission processing between processing devices connected to a network regardless of the type of inquiry processing, interactive processing, batch processing, and the like. The network control right has a time limit, and the time limit can be changed as needed, so that a unified process by coordination over the entire network can be effectively performed.

Further, in the present invention, the network information processing means performs input / output processing including use of the processing apparatus of the billing source as a terminal together with the information transmission processing of the requested application. .

According to the present invention, the network information processing means of the processing device which is requested to perform the information transmission processing of the application performs the terminal input / output processing together with the information transmission processing. Therefore, the network information processing means having the requested network control right performs the input / output processing using the processing device of the billing source of the billed application as a terminal.
Even if a request is made to execute an application possessed by a processing device of another client or server, the processing can be advanced by an input / output operation to the processing device of the request source. Also, even when a processing device that does not have the required network terminal function becomes a client or server, the network information processing means of the client or server that has network control authority can substitute for the network terminal input / output processing. If the terminal types of the requesting side and the accepting side of the information transmission process are different, the information transmission process including the information conversion can also be performed.

In the present invention, the network information processing means includes, in the information to be subjected to the information transmission processing of the requested application, a condition determination item of the information transmission processing and a command item of the information transmission processing. It is characterized by the following.

According to the present invention, the network information processing means includes, in the information for performing the information transmission process, a condition determination item and a command item for the information transmission process, and a determination branch for determining the processing content of the application information transmission process to be processed. A request can be made by designating conditions and the like in advance.

Further, the present invention is characterized in that the network information processing means performs the information transmission processing of the claimed application on behalf of another processing device.

According to the present invention, the processing apparatus provided with the circulating network control means to which the network control right has been transferred is the processing apparatus for transmitting the application information requested by the network information processing means to another client or server. Since the network information processing means is performed on behalf of the network as necessary, flexible coordination processing in the network can be performed.

In the present invention, the circulating network control means uses the network control information as a transfer source and a transfer destination for transferring a network system configuration and a process for recovering from a failure when transferring the network control right. It is characterized in that it is performed at the time.

According to the present invention, since the circulating network control means of each processing device uses the network control information used for circulating the network control right, the network system configuration and the processing for recovery from the fault are performed. When the circulating network control means of the processing device serving as a client or server having the control right transfers the network control right to the circulating network control means of the processing device serving as another client or server, the transfer destination and the transfer source are determined. It is possible to mutually update the contents, including the network control information, between the processing devices, and perform processing such as system configuration and failure recovery.

The present invention further provides a method of controlling a network in which a plurality of processing devices are connected so as to be able to transmit information as a client, a database server, or an application server. Circulating network control means for circulating a network control right for controlling information transmission processing between the server and the server or between the server and the server together with the network control information in a changeable time unit; and a client and the client. Network information processing means for performing application information transmission processing between a client and a server or between a server and a server, and a circulating network control means to which the network control right is transferred. The network information processing means of one processing device requests the network information processing means of another processing device for information transmission processing of an application on the network control information sent directly or together with the circulating network control right, and A network control method, characterized in that the network information processing means of the processing device provided with the circulation network control means to which the application has been transferred performs the information transmission processing of the claimed application.

According to the present invention, by circulating network control rights in variable time units,
Since the processing device serving as a client or a server having the network control right requests the application information transmission processing to another processing device serving as the client or the server directly or via the network control information, the processing without the network control right is performed. There is no danger of data collision due to the device unilaterally sending data to the network and there is no need for retransmission, and since the information transmission processing of the requested application is performed collectively, efficient application execution is performed. Can be.

Still further, according to the present invention, a plurality of processing devices are connected to a computer as a control device of a network in which information can be transmitted as a client, a database server or an application server. A circulating network control means for circulating the network control right for controlling the information transmission process between the client and the server or between the server and the server, together with the network control information, in a changeable time unit, A circulating network having network information processing means for performing application information transmission processing between a client and a client, between a client and a server, or between a server and a server, and to which network control authority has been transferred; The network information processing means of the processing apparatus having the control means requests the network information processing means of another processing apparatus to transmit information of the application directly or by using the network control information sent together with the circulation of the network control right. The network information processing means of the processing device having the circulation network control means to which the control right has been transferred,
A computer-readable recording medium on which is recorded a program for functioning as a network control device, which performs the information transmission process of the claimed application.

According to the present invention, a plurality of processing devices are connected to a network by a program recorded on a computer-readable recording medium, and a network control right is circulated along with a changeable time unit. It can be operated as a network control device.

[0027]

FIG. 1 shows a computer network system according to an embodiment of the present invention. The line 1 is connected to a plurality of processing devices 10a, 10b, 10c via network controllers 2a, 2b, 2c. Each of the processing devices 10a, 10b, and 10c is realized by a computer device such as a personal computer or a workstation that operates according to a program. In the present embodiment, a personal computer or the like is also called a workstation as long as it is connected to the line 1. Each of the processing devices 10a, 10b, 10c includes a circulating network control unit 11a, 11b, 11c, a network information processing unit 12a, 12b, 12c, an application software processing unit 13a, 13b, 13c, and a database 14
a, 14b, and 14c, respectively. Processing device 10
The number of a, 10b, and 10c is not limited to three as shown in FIG. 1, but may be two or more. The application software processing units 13a, 13b, 13c include database processing and other application software executed by the workstation.
The databases 14a, 14b, and 14c are targets for management and processing by the database processing of the application software processing units 13a, 13b, and 13c.

FIG. 2 shows a state in which the processing devices 10a, 10b and 10c connected to the lines in FIG. 1 form a circulating network under the control of the circulating network control means 11a, 11b and 11c in FIG. Show. The circulation network control right 20 for performing the information transmission process using the (communication) line includes a plurality of workstations 2.
Circulate between 1,2,23,24,25, ... 2n. Workstations # 1 to # 5 and #n similar to the processing devices 10a, 10b, and 10c in FIG. 1 operate as clients or servers as workstations 21 to 25, 2n. Each workstation 21-2
5 and 2n include clients or servers 21a to 2n
a, agents 21b to 2nb and arbitrary terminal 21
c to 2 nc. The agents 21b to 2nb are provided with the circulating network control means 11a and 11 shown in FIG.
b, 11c, under which the circulation of the circulating network control right is performed. Workstations 21 and 2 that have received the circulation network control right 20
n performs the processing of the application requested from the other workstations 21 to 2n in accordance with the network control information circulated together with the circulating network control right 20, and
If there is an application to charge 2n, it is set in the network control information. In this manner, an application can be requested from any workstation 21 to 2n to another workstation 21 to 2n in the network.

In executing the requested application, the network information processing means 12a, 12b, and 12c of the workstations 21 to 2n on the execution side perform input / output of the terminal on the requesting side on behalf of the requesting side. It is also possible to perform terminal input / output processing appropriate for the application without being caught by the terminal level. For example, a keyboard, a display, and the like are provided in all workstations, but an image scanner, a printer, and the like are not necessarily provided in all workstations. In the information processing device accompanying the execution of the application, a route 31, 32, 33,... Different from the circulation route 30 of the circulation network control right 20 can be used.

In the circulation of the network control right from the workstation to the next workstation, it is assumed that the communication of the network control information at that time reveals that the circulation network control means of the workstation 23 does not operate. The circulating network control means of the workstation 22 checks the status of the network system and the like, and when it is determined that the normal network system can be maintained by disconnecting the workstation 23, the workstation 23 is bypassed. Establishing a circular route 40 from workstation 22 to workstation 24, including network control information exchange with workstation 24;
Continue network processing. The bypassed workstation 23 detects that it has been disconnected from the network, for example, because the circulation network control right 20 is not transferred even after a predetermined time has elapsed,
The processing for recovery from a preset failure is started.
After the failure is recovered, a procedure for reconnecting to the network and recovering the network system can be determined in advance.

FIG. 3 shows each of the processing units 10a, 10b, 10
c network information processing means 12a, 12b, 12c
Shows an example of an information format 50 exchanged between a client and a server using the paths 30, 31, 32, 33,..., 40 of FIG. The communication control information 51 includes packet control information and the like, and serves as control information for transmitting and receiving information on a network. The header information 52 includes an application type 53 and a billing operation condition 54. The application type 53 includes the location of the application program and whether or not the application program needs to be downloaded. Billing operation condition 54
Is a method that does not release the connected state until the processing ends at 1: 1. Instead, the processing is continued after the processing is started,
However, we break out of the connected state between the billing party and the billing source,
It also includes so-called throw-away control in which the billing process proceeds, an occupation mode for keeping the connected state, and the like.
Further, the information format 50 includes information content 55 of the information transmission process.
It also includes itself. The information content 55 of the information transmission process includes a condition determination designation 56, a command 57, data 58, and the like. The condition determination designation 56 includes an ID code, a password, Ma
x. Including the time limit. The command 57 is, for example, a query / resp in an inquiry-response interactive mode.
Includes specification of once procedure setting, etc. Data 58 includes characters, images (pixels), color designations, windows,
Includes specified information such as location.

FIG. 4 shows an example of the network control information 60 circulated together with the circulating network control right 20 shown in FIG. The network control information 60 is control communication information for the circulating network control means 11a, 11b, 11c of the processing devices 10a, 10b, 10c connected as the respective workstations 21 to 2n, such as the circulating path 30 in the network. And update
Will be maintained. The header 61 contains the network control information 60
And the order is given. It is composed of 1 to n pages as needed. Next, information of the transfer destination, transfer source, and immediately preceding transfer source of the circulation network control right 20 is added as the circulation network control information 62. Thereafter, the network system configuration control information 6
3 follows. The network system configuration control information 63 is provided to grasp the state of each workstation in which the circulating network control right 20 circulates,
The status, the priority link and the after link, which are the workstations to be changed and connected.
Includes information on the circulation route to the constituent units before and after k and the like. Next, for each workstation, the billing contents 64 to other workstations are added. The billing content 64 includes the workstation number of the billing destination and the actual billing content as "billing for information transmission processing" from the workstations 21 to 2n of the billing source. The actual billing contents include the processing request classification including the application type and other billing processing classifications, the contents of the request level of the failure recovery processing, the terminal type of the billing source and the terminal input / output proxy request level,
Processing modes such as sequential and one by one, processing status such as continuation, interruption, completion, request time,
A time including a start time and an end time, a request level of priority processing, and the like are included.

FIGS. 5 to 11 show a procedure for performing network control in the embodiment of FIG. In this procedure, the “workstation” is used as a representative of the function of the client or server of the processing devices 10a, 10b, and 10c connected to the network. The procedure starts from step s0 in FIG. 5, and in step s1, initial processing after startup is performed. Initial processing can be performed from any workstation connected to the network. At step s2, the status of the network system is checked by the circulating network control means 11a, 11b, 11c of each of the processing devices 10a, 10b, 10c. In step s3, the state check result of the network system in step s2 is checked. If the ready state is not ready, the process returns to step s2.
Check the network status again. Steps
If it is determined in step 3 that the state of the network is Ready, the process proceeds to the next step s4, where an initial process for starting the network system is performed. Here, mutual confirmation of network connection and registration thereof are performed. Thereafter, the process proceeds to step s5, where the result of the initial processing in step s4 is checked. If it is normal, the process proceeds to “R”, that is, step s11 shown in FIG.

In step s11 shown in FIG. 6, a process for starting a network application is performed. In the next step s12, the network application system is activated from the workstation. Step s13
Then, it is checked whether or not the network application system is ready to start at that time. If there is an abnormality, the process returns to step s11, and the start processing of the network application is performed again. If there is no abnormality in step s13, step s14
And sends an application start command to each workstation. In the next step s15, the responses from the respective workstations are confirmed, and if all are not OK, the workstations that respond No in the step s16 are displayed. When all are OK in step s15, or when the display in step s16 ends, the process proceeds to “1”, that is, step s21 shown in FIG.

In step s21 shown in FIG. 7, it is checked whether or not all the workstations registered on the network have started up normally and started. No
If there is a tReady workstation, it is displayed in step s22. When it is determined in step s21 that all the workstations have been started normally, or when the display in step s22 is completed, the process proceeds to step s23. In step s23, it is checked whether or not the terminal input / output proxy is set in the network. In step s24, based on the check result in step s23,
It is determined whether there is a terminal input / output agent workstation. If such a workstation is present, in step s25, a substitute workstation is selected, and a workstation for performing input / output processing is selected. Instructs initial processing of input / output processing.

FIG. 8 shows a state after the command of step s25 in FIG.
Alternatively, “2” and below, which are processes after it is determined in step s24 that there is no terminal input / output proxy setting, are shown. A step s31 decides whether or not the initial processing of the terminal input / output proxy processing has been completed normally. When it is determined that the process has not been completed normally, the process returns to step s25 in FIG. 7 and the initial process of the terminal input / output proxy is performed again, as indicated by “A”.
If it is determined in step s31 that the process has been completed normally, the process proceeds to step s32, where the status of the network is confirmed, network control information is generated,
To enter the circulation mode, the network control information is transmitted to the next circulation destination based on the network control information, and the circulation network control right 20 is passed. At the same time, both the transfer source and the transfer destination perform processing for failure recovery measures. In step s33, a response to the transfer of the circulating network control right 20 is waited. If the circulating network control right 20 has been normally transferred to the next circulation destination, the process proceeds to step s34. If the transfer has not been performed normally, the flow returns to step s32, and a retry is performed. In this case, if it is determined that the transfer destination is not functioning normally, the process enters a process of reconfiguring the circulation route 40 of the circulation network control right 20 to bypass the transfer destination. If it is determined in step s33 that the circulating network control right 20 has been normally transferred, the process enters the network control circulating waiting mode in step s34 and enters the WAIT state. Next steps
At 35, it is determined whether the circulating network control right 20 has been transferred from another workstation to that workstation. Step s3 until transferred
4 and step s35 are repeated to keep the WAIT state.

FIG. 9 shows that in step s35 of FIG.
"0" indicates processing after "3", which is the processing after it is determined that the transfer has been made. In step s41, initial processing at the time of control transfer in which the circulating network control right 20 common to each workstation is transferred is performed. Next steps
At 42, the contents of the network control information 40 circulating with the circulating network control right 20 are analyzed. In step s43, information addressed to the own workstation is loaded, and the requested application is accepted. In the next step s44, if there is an application to be charged from the own workstation to another workstation, the application is set in the network control information and the application to be charged is set. In this case, the content of the network control information is set to request the other workstations to transmit the information of the application. However, the network information processing means of the processing device having the network control right directly requests the other workstations. You can also.

FIG. 10 shows a procedure following "4" performed after step s44 in FIG. In step s51, information transmission processing of the application requested by the network control information is performed. At this time, if a terminal input / output proxy is specified, it is followed. In step s53, it is determined whether or not all the information transmission processes of the requested application have been completed. When it is determined that all the processes have been completed, a process of transmitting the end of the information processing to the billing source is performed in step s53, and the process returns to step s32 to transfer the circulation network control right 20. If it is determined in step s52 that all the information transmission processes have not been completed, the process proceeds to step s54, where Max. It is determined whether the set time has elapsed. When it is determined that the time has not elapsed, the process returns to step s51, and the information transmission process is continued. Step s54
When it is determined that the time has elapsed, an INQ signal for requesting the extension of the occupation time of one span is sent to the next circulation destination in step s55 to request time occupation.

FIG. 11 shows a procedure related to time occupancy performed at "5" and below, following step S55 in FIG. In step s61, it is determined whether or not the request for extending the occupation time by INQ has been accepted. If the request for extending the occupation time is not accepted, a predetermined flag of the network control information is set to interrupt in step s62, and the process returns to step s32. If it is determined in step s61 that the extension of the occupation time is OK from the next circulation destination, the continuation flag provided in the circulation network control right 20 is set to on in step s63, and the process returns to step s51. .

In the present embodiment, when the circulation network control right 20 is circulated, the Ma
x. If it is possible to extend the set time in units of one span, the information transmission process required for the requested application can be completed as much as possible. When it is not desirable to extend the occupation time, the extension of the occupation time is not permitted, so that the circulation network
Is Max. It is possible to prevent one workstation from being occupied for more than the set time, and to improve the processing efficiency as a comprehensive network.

The operation of the above-described embodiment can be installed as a program for each of the processing devices 10a, 10b, and 10c through various recording media and networks.

[0042]

As described above, according to the present invention, it is possible to avoid the necessity of performing retransmission due to collision of simultaneous data transmission in information transmission processing using a network by using a circulating network control right. The information transmission process of the application requested by the network control information to be circulated together with the network control right can be variously performed under the control of the processing device having the network control right. , An efficient network environment can be constructed.

Further, according to the present invention, the network information processing means of the processing device serving as a client or a server having a circulating network control right as a billing destination can also perform the network terminal input / output processing of the billing source. .

Further, according to the present invention, when requesting the information transmission process, it is possible to designate in advance the process content, the decision branching condition, and the like.

Further, according to the present invention, the information transmission processing of the requested application can be performed by the network information processing means of another processing apparatus as required, so that the flexible coordination processing in the network can be performed. It can be performed.

Further, according to the present invention, when the network control right is circulated, it is possible to cause a network system configuration and a failure recovery process to be performed.

Further, according to the present invention, the circulating network to which the network control is transferred is circulated by circulating the network control right in a changeable time unit and requesting the information transmission processing of the application directly or by the network control information. Since the processing device having the control means performs the information transmission process of the requested application, the processing device having no network control authority does not manage the information transmission process on the network, and can simultaneously perform the processing among the plurality of processing devices. It is possible to perform a data transmission to cause a data collision, avoid a situation in which retransmission is required, and efficiently perform an information transmission process using a network.

Furthermore, according to the present invention, when a computer device is connected to a network and operated by a client, a database server or an application server, the network control information is used in a time unit in which network control authority can be changed. By circulating, it is possible to perform efficient information transmission processing while avoiding retransmission due to collision of simultaneous data transmission in the network.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a physical configuration of a network connection according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a schematic configuration of a network configured by circulating a circulating network control right 20 in the embodiment of FIG. 1;

FIG. 3 is an information format 50 to be subjected to the information transmission process of FIG. 2;
FIG. 3 is a diagram showing the configuration of FIG.

FIG. 4 is a diagram showing a configuration of network control information 60 circulating with the circulating network control right 20 of FIG. 2;

FIG. 5 is a flowchart showing an operation procedure of each of the workstations 21 to 2n in FIG. 2;

6 is a flowchart showing an operation procedure of each of the workstations 21 to 2n in FIG.

7 is a flowchart showing an operation procedure of each of the workstations 21 to 2n in FIG.

8 is a flowchart showing an operation procedure of each of the workstations 21 to 2n in FIG.

9 is a flowchart showing an operation procedure of each of the workstations 21 to 2n in FIG.

FIG. 10 is a flowchart showing an operation procedure of each of the workstations 21 to 2n in FIG.

FIG. 11 is a flowchart showing an operation procedure of each of the workstations 21 to 2n in FIG.

[Explanation of symbols]

1 (communication) line 2a, 2b, 2c Network controller 10a, 10b, 10c Processor 11a, 11b, 11c Circulating network controller 12a, 12b, 12c Network information processor 13a, 13b, 13c Application software processor 14a, 14b , 14c database 20 circulating network control right 21-25, 2n workstation 21a-25a, 2na client or server 21b-25b, 2nb agent 50 information format 60 network control information

Claims (7)

[Claims] 1. A network control device in which a plurality of processing devices are connected so as to be able to transmit information as a client, a database server or an application server, wherein each of the processing devices includes a client, a server, and a client. Circulating network control means for circulating the network control right for controlling the information transmission process between the server or the server with the network control information in a changeable time unit, and between the client and the client; Network information processing means for performing application information transmission processing between the client and the server or between the server and the server; and a network of a processing apparatus having a circulating network control means to which the network control right is transferred. The work information processing means requests the information transmission processing of the application to the network information processing means of another processing device directly or on the network control information sent together with the circulating network control right, and the network control right is transferred. A network control device, wherein a network information processing means of a processing device provided with a circulating network control means performs the information transmission processing of the claimed application. 2. The system according to claim 1, wherein the network information processing means performs input / output processing including use of the processing apparatus of the billing source as a terminal together with the information transmission processing of the requested application. 2. The network control device according to 1. 3. The information processing unit according to claim 2, wherein the information to be subjected to the information transmission processing of the requested application includes a condition determination item of the information transmission processing and a command item of the information transmission processing. 3. The network control device according to claim 1, wherein: 4. The network information processing means performs the information transmission processing of the claimed application.
The network control device according to any one of claims 1 to 3, wherein the network control device is performed on behalf of another processing device. 5. The circulating network control means uses the network control information to perform processing for network system configuration and failure recovery when the network control right becomes a transfer source and a transfer destination at the time of transfer of the network control right. 5. The network control device according to claim 1, wherein the control is performed. 6. A method for controlling a network in which a plurality of processing devices are connected so as to be able to transmit information as a client, a database server, or an application server. Circulating network control means for circulating the network control right for controlling the information transmission process between the server or the server with the network control information in a changeable time unit, and between the client and the client; A processing apparatus comprising: a network information processing means for performing an application information transmission process between a client and a server or between a server and a server; and a circulating network control means to which the network control right is transferred. The network information processing means requests information transmission processing of the application to the network information processing means of another processing device directly or on the network control information sent together with the circulating network control right, and the network control right is transferred. A network control method, wherein a network information processing means of a processing device having a circulating network control means performs the information transmission processing of the claimed application. 7. A computer in which a plurality of processing devices are connected as a client, a database server, or an application server so as to be able to transmit information as a control device of a network. Circulating network control means for circulating the network control right for controlling the information transmission process between the server and the server or between the server and the server together with the network control information in a changeable time unit; Network information processing means for performing an application information transmission process between a client and a server, or between a server and a server, and a circulating network control means to which a network control right is transferred. The network information processing means of the processing device requests the network information processing means of another processing device to transmit the application information by using the network control information sent directly or with the circulation of the network control right, and the network control right is transferred. A network information processing means of a processing device provided with a circulating network control means for performing information transmission processing of the claimed application by a computer in which a program for functioning as a network control device is recorded. A readable recording medium.