JPH0916456A - Data distribution system - Google Patents

Abstract

PURPOSE: To change item information from the side of a client computer and to appropriately change and provide required data in a data group. CONSTITUTION: In this data distribution system constituted by connecting a server computer 200-1 and the client computers 300-1-300-5 to a communication network 100 in which the server computer 200-1 distributes the data belonging to a prescribed item from the data group 3 constituted so as to make one or more than two pieces of the data belong to through the communication network 100 to the client computers 300-1-300-5, the server computer 200-1 is provided with an item information storage means for storing the item information used in the case of selecting the desired data in the data group 3 and an item change request coping processing means for performing a change processing relating to the item information of the item information storage means corresponding to an item change request arriving through the communication network 100.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data structure in which a server computer and a client computer are connected to a communication network such as a LAN, and one or more data belong to each of a plurality of items. The present invention relates to a data distribution system in which the server computer distributes data belonging to a predetermined item from a group to the client computer via the communication network.

[0002]

2. Description of the Related Art The data distribution system as described above is shown in FIG.
19 is configured as shown in FIG.
It looks like Server computer 200 on LAN 100
A-1 and client computer 300A-1, 30
0A-2 is connected to the client computer 300
A-1, 300A-2 are server computers 200A
Receive data from -1. In this case, the server computer 200A-1 receives the data group 3 from another computer or the data service system, and broadcasts the predetermined data in the data group 3 via the LAN 100 (distribution for all nodes). here,
The data group 3 is, for example, stock price data, and this stock price data includes, for a plurality of items such as chemical stocks, electric stocks, and textile stocks, each brand and its low price, high price, previous day's price, volume, etc. The server computer 200A-1 has a data structure, and selects a brand, its stock price, and the like from the incoming data group 3 based on the preset item information Da, and delivers the selected brand.

That is, as the item information Da, for example,
Information such as chemical stocks, electric stocks, textile stocks, and the like, which is a standard for selecting a brand, is set. On the other hand, the item information D is also stored in each of the client computers 300A-1 and 300A-2.
a1 and Da2 are set, the client computers 300A-1 and 300A-2 receive the data group that arrives by the broadcast, and from this data group, the item information Da1 and Da that are set above are set.
Based on 2, the data (brand and its stock price, etc.) is selected and output.

[0004]

Therefore, in the conventional data distribution system, when the item information is changed, the item information is individually set in each server computer 200A-1, client computers 300A-1 and 300A-2. There was a problem that it was troublesome because it was necessary to make changes. Further, the change of the item information may be accompanied by the change of the program itself. In such a case, each server computer 200A-1 and client computer 300 may be changed.
It is necessary to suspend the operations of A-1 and 300A-2 to change the item information, and particularly when suspending the operation of the server computer, there is a problem that the system does not function even temporarily. there were.

Further, in this data distribution system, the node capable of distributing data is only the node of the server computer, and as shown in FIG.
Although 0A-1 can deliver data as indicated by the arrow, the client computers 300A-1, 300A-2, etc., have no means for transmitting even if there is data to be transmitted to other client computers or server computers.

The present invention has been made in order to solve the above problems of the conventional data distribution system, and the purpose thereof is to make it possible to change the item information from the client computer side and to appropriately change the necessary data in the data group. It is to provide a data distribution system that can be obtained by changing. Further, another object is a data distribution system which enables distribution when data to be transmitted to another client computer or a server computer is generated in a client computer, and enables the system to be operated efficiently without waste. Is to provide.

[0007]

A data distribution system according to the invention described in claim 1 of the present application is configured by connecting a server computer and a client computer to a communication network, and each of a plurality of items has 1 or 2 items. In the data distribution system in which the server computer distributes the data belonging to a predetermined item from the data group configured to belong to the above data to the client computer via the communication network, the server computer includes the data group. An item information storage unit for storing item information used when selecting desired data among the items, and a change process regarding item information of the item information storage unit in response to an item change request coming through the communication network. And an item change request handling processing means for performing.

In the data distribution system according to the invention described in claim 2 of the present application, the node information indicating which node the item information stored in the item information storage means has been changed is stored. The change request node storage means is provided, and the item change request correspondence processing means, based on the node information stored in the change request node storage means, inquires of the node whether the corresponding change request is valid or not. Characterize.

In the data distribution system according to the invention of claim 3 of the present application, the item change request handling processing means asks whether the node is in operation or not and asks whether the corresponding change request is valid. It is characterized in that it is used instead of matching.

Each node of the data distribution system according to the invention of claim 4 of the present application is provided with item information storage means for storing item information used when selecting desired data from incoming data, The item change request handling means changes the item information in the item storage means of its own node and sends an instruction to each node to change the item information in the item information storage means provided in each node. It is characterized by

In the data distribution system according to the invention of claim 5 of the present application, the client computer detects the occurrence of a change request for the item information of the item information storage means provided in the server computer, and causes the server computer to detect the change. It is characterized in that change request processing means for sending a change request for item information is provided.

In the data distribution system according to the invention of claim 6 of the present application, the client computer includes an item information storage unit for storing item information used when selecting desired data from the incoming data, and a server computer. It is characterized by comprising an item change control means for changing the item information of the item information storage means in response to an incoming item change request.

In the data delivery system according to the invention of claim 7 of the present application, the client computer is provided with a response means for returning a response to the inquiry sent from the server computer to the node as to whether the node is in operation. It is characterized by being

A data distribution system according to the invention of claim 8 of the present application is configured by connecting a server computer and a client computer to a communication network, and one or more data belong to each of a plurality of items. In a data distribution system in which a server computer distributes data belonging to a predetermined item from a data group configured to a client computer via a communication network, the server computer responds to a feed request for data coming from the client computer. In addition, it is characterized in that it is provided with a feed request handling processing means for performing processing relating to the feed of the data relating to the request.

In the data distribution system according to the invention of claim 9 of the present application, the client computer detects the generation of a request for a data feed request to the server computer and sends the data feed request to the server computer. It is characterized in that it is provided with a feed request processing means.

In the data distribution system according to the invention described in claim 10 of the present application, the item information storage means of each node corresponds to all item information related to the data group and a flag indicating whether or not there is a setting for this item information. When the item information stored in the item information storage means is changed, a flag is used to perform a process related to the change of the corresponding item information.

[0017]

A data distribution system according to the invention described in claim 1 of the present application has an item information storage means for storing item information used when selecting desired data in a data group, and is provided via a communication network. When an incoming item change request arrives, the change process for the item information in the item information storage means is performed in response to the incoming request.

In the data distribution system according to the invention of claim 2 of the present application, when an item change request arrives via the communication network, a node indicating which node the item information is changed based on the request. Based on the information, an inquiry is made to the node as to whether or not the corresponding change request is valid, thereby performing an exclusive process of changing the item information.

In the data distribution system according to the invention described in claim 3 of the present application, the inquiry about whether the node is in operation is used instead of the inquiry about whether the corresponding change request is valid, and the item information Work to be able to do exclusive processing of changes.

In the data distribution system according to the invention of claim 4 of the present application, the server computer changes the item information of the item storage means of its own node, and for each node, the item provided in each node. An instruction is sent to change the item information in the information storage means, and the item information used for selecting desired data from the incoming data provided in each node is made common.

The data distribution system according to the invention of claim 5 of the present application detects whether or not there is a change request for the item information of the item information storage means provided in the server computer, and the request is issued. When issued, an item information change request is sent to the server computer to change the item information in the item information storage means provided in the server computer.

According to the invention of claim 6 of the present application, the data distribution system according to the present invention enables the server computer to perform a modification process on the item information in the item information storage means in response to an item modification request coming from the server computer. Item information corresponding to the data distribution of is set.

In the data distribution system according to the invention of claim 7 of the present application, the exclusive processing for changing the item information is performed by returning a response to the inquiry sent from the server computer to the node as to whether the node is in operation. Is possible.

In the data distribution system according to the invention of claim 8 of the present application, in response to a data feed request coming from the client computer, the server computer performs processing relating to the data feed relating to the request, and each client The data sent from the client computer is distributed to the computer and other server computers.

A data distribution system according to the invention of claim 9 of the present application is:
Whether or not there is a request for a data feed request to the server computer is detected, and when the request is generated, a data feed request is sent to the server computer, and each client computer and other servers are sent via the server computer. Deliver data to computers.

In the data distribution system according to the invention described in claim 10 of the present application, when the item information is changed, a flag is used to perform the process of changing the corresponding item information, and the item information itself is changed. No processing is required.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A data distribution system according to embodiments of the present invention will be described below with reference to the accompanying drawings. In the description of each drawing, the same constituents will be denoted by the same reference symbols and redundant description will be omitted. FIG. 11 shows a data distribution system according to the present invention. In this embodiment, a communication network is configured by a LAN (Local Area Network) 100, and the LAN 100 has a server computer 200.
-1, 200-2, client computer 300-
1 to 300-5 are connected.

The data group 3 is sent from the data supplier to the server computer 200-1. In this embodiment, the data group 3 is stock price data as shown in FIG. 12, and this stock price data is for each item and its low price for a plurality of items such as chemical stocks, electric stocks, textile stocks, etc. It has a data structure to which high price, previous day's price, volume, etc. belong. In the server computer 200-1, item information (chemical stock, electric stock, textile, etc.) is set regarding which field the stock price should be fetched from the incoming stock price data group 3, and the server computer 200-1 is set. Then, based on this item information, corresponding data is selected from the data group 3 of all stock prices, fetched, data loss guarantee processing such as format conversion and addition of serial numbers is performed, and the data is sent to the LAN 100 by broadcasting.

On the other hand, the client computer 300-
1 to 300-5, item information (chemical stock, electric stock, textiles, etc.) is set, and the client computers 300-1 to 300-5 use the LAN 100 by the server computer 200-1 based on the item information.
The corresponding data is selected from the stock price data group sent to and fetched, and output from the display or printer. Item information (chemical stock, electric stock, fiber, etc.) set in the client computers 300-1 to 300-5,
The item information (chemical stock, electric stock, fiber, etc.) set in the server computer 200-1 does not necessarily match. The server computer 200
-2 distributes the data created by the device itself to the client computers 300-1 to 300-5 by the same method as the server computer 200-1. Of course,
According to the present invention, when the server computer 200-1 selects data based on item information from a data group created by itself or stored in advance and distributes this data to the client computers 300-1 to 300-5. Also applies to

FIG. 3 shows the server computer 200.
A -1 configuration is shown. This server computer 2
A CPU 31 that integrally controls each unit, a program and data used by the CPU 31, and a main memory 32 that is used as a working area are stored in the storage device 00-1.
Is provided. A data input interface 33, a LAN interface 34, an external storage controller 35, a display controller 37, and a keyboard controller 39 are connected to the CPU 31 via a system bus 30. From the data input interface 33, the stock price data group 3 sent from another system or the like is fetched. The LAN interface 34 is connected to the LAN 100, and data is transmitted / received via the LAN interface 34. An external storage device 36 such as a magnetic disk storage device is connected to the external storage control part 35, and the external storage control part 35 receives the received data group 3 and the data coming from the LAN 100 side under the control of the CPU 31. To read the stored data. The display control unit 37 is connected to a display device 38 such as a CRT or LCD, and the display control unit 37 is connected to the CPU 31.
The information is displayed on the display unit 38 under the control of. A keyboard input device 40 is connected to the keyboard control unit 39,
The keyboard control unit 39 gives the information generated by the operation of the keyboard input device 40 to the CPU 31.

The configuration shown in FIG. 3 is similarly applied to the server computer 2-2, and the client computers 300-1 to 300-5 are also similarly configured. However, in the server computer 2-2 and the client computers 300-1 to 300-5,
Normally, the data input interface 33 is not provided. However, like the server computer 2-1, the server computer 2-2 receives a data group from another system or the like and receives the client computers 300-1 to 300.
A data input interface 33 is provided in the case of delivering data to -5.

A server computer 20 having the configuration shown in FIG.
0-1 functions as a device including each unit shown in FIG. That is, the item information storage means 2 in which the item information is stored is provided, and the data distribution processing means 3 is based on the item information stored in the item information storage means 2 from the data group 3 relating to the received stock price and the relevant field. The selected stock price data is selected and transmitted by broadcasting from the transmission unit (LAN interface 34). The item information storage means 2 exists in the main memory 32, and it is possible to set and change the stored contents from the input means 1 such as the keyboard input device 40. Further, the item information in the item information storage means 2 is changed by the item change request handling processing means 6. The change request node storage means 7 is connected to the item change request correspondence processing means 6, and the change request node storage means 7 stores the item information stored in the item change request correspondence processing means 6 including its own device. , Node information indicating which node (more precisely, the device of the node) is changed is stored. When a request for changing item information is sent from any of the client computers 300-1 to 300-5 via the LAN 100 and this request comes from the receiving unit 8 (LAN interface 34), the steps S72A to S72A in FIG.
As shown in S72C, the item change request handling means 6
Refers to the node information stored in the change request node storage means 7 and, if the note information is stored, inquires of the node whether the corresponding change request is valid or not from the transmission unit 9 to the LAN 100. Send through. When the information of this inquiry is returned as valid, it is not changed, and when it is returned as invalid or the note information is not stored, the item according to the change request is sent. The information is changed and stored, and the storage content of the change request node storage means 7 is also updated. And
The item change request handling unit 6 broadcasts each of the client computers 300-1 to 300-5.
On the other hand, the new item information stored in the item information storage means 2 is distributed together with the change instruction. Further, a feed request handling processing means 5 is provided, and the feed request handling processing means 5 receives data from any one of the client computers 300-1 to 300-5 coming from the LAN 100 via the receiving section 8 and the feed request thereof. In response to the distribution of stock price data, it receives a serial number and is broadcast from the transmitter 9.

The client computers 300-1 to 300-5 having the same configuration as in FIG. 3 function as a device including the units shown in FIG. That is, the item information storage means 20 storing the item information is provided, and the incoming information processing means 16 receives the item information stored in the item information storage means 20 based on the item information stored in the item information storage means 20 via the LAN 100.
The corresponding stock price data is selected from the stock price data arriving at and sent to the output means 21. The item information storage means 20 exists in the main memory 32, and the stored contents can be set and the setting can be changed from the input means 18 such as the keyboard input device 40. Further, the item information in the item information storage means 20 is changed by the item change control means 15. Upon receiving the instruction to change the item information transmitted from the server computer 200-1 from the receiving unit 12 via the LAN 100, the item change control unit 15 stores the item information related to the change instruction in the item information storage unit 20 and sets the item information. Make a change. Also,
For example, from the input means 18 to the server computer 200-
When the change request for the item information set to 1 is input, the item change request processing means 14 accepts this, and the item information stored in the item information storage means 14 is input in response to the change request. The data is fetched and sent as a predetermined format of the item change request from the transmission unit 11 to the server computer 200-1 via the LAN 100. The incoming information processing means 16 sends the server computer 2 to the node.
When the information inquiring whether the change request of the item information set to 0-1 is valid is received, the response means 19 is activated. The response means 19 determines whether the change request is valid or not from the transmission unit 11 from the LAN 100 depending on whether the task or the like that has requested the change of the item information set in the server computer 200-1 upon activation is in operation. It returns to the server computer 200-1 via. Therefore, the information related to the running / finishing of the task that has issued the change request is held. When the client makes a request to change the item information, the end of change is sent to the server 200-1. Further, a feed information storage means 17 for storing information to be transmitted to the client computers 300-1 to 300-5 and the server computer (200-1, 200-2) is provided, and the feed information storage means 17 is provided. Stores information to be fed, which is generated by the input means 18 or by processing such as a task. Feed request processing means 13
Detects a feed (delivery) request for the information stored in the feed information storage means 17 by the input means 18 or from a task or the like, and sends the information in the feed information storage means 17 together with the feed request from the transmitter 11 to the LAN 100. To the server computer 200-1 via the.

The server computer 200 having the above configuration
1 has a program of the flowcharts shown in FIGS. 6 to 8 in the main memory 32, and by executing the program, it operates as each unit of FIG.
-1 to 300-5 have the programs of the flowcharts shown in FIGS. 9 and 10 in the main memory 32 and execute the programs to operate as the respective units of FIG. Further, in the description of this embodiment, the server computer 200-2 only performs the operation of receiving the distribution of the data by the broadcast from the server computer 200-1, and the configuration for performing this operation is the above-mentioned client computer 300-1. ~ 300-5.

The main memory 32 of the server computer 200-1 is provided with the table 50 shown in FIG. 4, and the item information storage means 2 and the change request node storage means 7 are provided.
And That is, the area 51 of the table 50 stores the node information of the node that has made the item change request, which is the currently set item information, and the area 52 stores the item information. An area 52 in the table 50 is provided in each of the client computers 300-1 to 300-5 and item information is set therein.

FIG. 5 shows the LA of the above data distribution system.
The format of data transmitted and received in N100 is shown. The data shown in FIG. 5 has, for example, a data length within a predetermined range, a preamble portion P such as a synchronization word is arranged at the beginning, and inside thereof, destination information, source information,
Data serial number (a series of numbers added to prevent data loss, and can be omitted in the case of commands and replies (returns) that are not distribution data), data type information (whether it is a stock price, a request, or (Identification of return) is set, and stock price data and other data itself are set.

In such a system, the server computer 200-1 selects and fetches corresponding data from the data group 3 of all stock prices based on the set item information, guarantees data loss such as format conversion and addition of serial numbers. The client computers 300-1 to 300-3 are processed and transmitted to the LAN 100 by broadcasting.
00-5 selects and fetches corresponding data from the stock price data group sent to the LAN 100 by the server computer 200-1 based on the set item information (chemical stock, electric stock, textiles, etc.), and displays it. Or output from a printer. In such an operation, for example, the keyboard input device 40 in the client computer 300-2.
It is assumed that an item change request is generated from the input means 18 such as or by a program such as a task.

At this time, the client computer 300
-2, the program of the flowchart shown in FIG. 9 is executed, the CPU 31 detects the occurrence of the item change request (S81), and fetches the item information set in the area 52 of the main memory 32 (S84). , Request data is created in the format shown in FIG. 5 (S85), and this is sent out via the LAN interface 34 (S8).
6). In the above, the item information of the area 52 is the item information (construction stock, price section,
Electric stock etc.) has been changed. Then, in the request data, the identification information of the server computer 200-1 is set as the destination information, the identification information of the client computer 300-2 is set as the transmission source information, the serial number is omitted, and the type information includes the item information of the item information. A code indicating a change request is set, and item information to be changed is set in the data part.

On the other hand, at this time, the server computer 200
-1 executes the program of the flowchart shown in FIG. That is, the arrival of data from the LAN 100 is monitored (S61), the client computer 300-2 receives a request to change the item information, and it is detected whether the request is an item change request (S62). The process proceeds to the change request handling process (S65). The flowchart of FIG. 7 explains the details of the item change request handling process. That is, the CP of the server computer 200-1
The U31 detects the item change request, extracts the node information indicating by which node the item information stored in the area 52 of the main memory 32 is changed (S71), and the node information exists. Then, the node is inquired about the "life" or "death" (S72). Originally, an inquiry is made as to whether or not the change request made by the node is still valid. However, in this embodiment, an inquiry of "live" and "death" confirmation is appropriately made by the server computer to the client computer. Instead of making an inquiry, it is used whether or not the change request made by the node is still valid.
The data of this inquiry can also be transmitted by broadcast in which a code indicating that all nodes are targeted is set in the destination information, and the corresponding client computer (here, 300-1) is set as the destination information. It can also be set and used. The node information is deleted when the end of the change request is received from the client (S71A, S71B).

On the other hand, the client computer 300-
1 (300-2 to 300-5 are the same), the process of the program of the flowchart shown in FIG. 10 is performed. In response to an inquiry of “live” and “death” confirmation, step S
91, S92, S93, S95, S97,
It is detected that the inquiry is a "live" or "dead" confirmation, and it is determined whether or not to respond to the inquiry according to the operating state of the task that has changed the item information. Here, it is assumed that the response is returned.

When the above response is made, "live" of the client computer 300-1 is confirmed, and the CPU 31 of the server computer 200-1 determines that the item information is not changed (S74). That is, in this case, the server computer 200-1 does not perform the response process corresponding to the item information change request, and the CPU 31 of the client computer 300-2 monitors the arrival of the item information change instruction in step S87 of FIG. Then, while the detection of whether the time is over in step S88 is repeated, the time is over, and after a predetermined time elapses, the process proceeds to the process of again generating the item information change request (S9).
0).

FIG. 13 shows data transmission / reception corresponding to the above description. That is, the client computer 300-2 sends the item information change request R-1 to the server computer 200-1, but the client computer 300 related to the node that changed the current item information.
When the information A-1 inquiring about "live" or "death" is sent to -1, the response R-2 is returned, so "live" of the client computer 300-1 is confirmed, and the item information is changed. I don't know.

On the other hand, as shown in FIG. 14, whether the client computer 300-1 is down or the information A-1 inquiring "live" or "dead" by the processing of step S98 of FIG. When the response R-2 is not returned, the CPU 31 of the server computer 200-1
Is time-up in the time-up monitoring in step S75 of FIG.
The item information of (1) is changed to the item information sent from the client computer 300-2, and data related to the item information change instruction is created (S76), and this is sent by broadcast (S77). That is, in the data format shown in FIG. 5, a code indicating that all the nodes are targeted is set in the destination information, a serial number is set, and new item information is set in the data section to be data to be sent. FIG. 16 shows how the server computer 200-1 sends an item change instruction F-1 by broadcasting in response to the item change request R-1 sent from the client computer 300-2. By thus adding the serial number and transmitting the data, the data loss handling processing (step S94 in the flowchart of FIG. 10) is performed, and it is possible to appropriately change the item information in the entire system.

The client computer 200-2 which receives the data of the item change instruction (when the client computer 200-2 is in the operating state as well, operates according to the flowchart shown in FIG. 10, and detects the arrival of the data ( S91), stock the data for each serial number (S9
2) The presence or absence of omission is detected (S93). Here, when the omission is detected, a process corresponding to the omission is performed (S9).
4). The processing of this step S94 is supported by appropriate processing for each system, and for example, various processing may be performed such as making a retransmission request or simply notifying the corresponding server computer that a dropout has occurred. Then, next, it is detected whether or not an item change instruction is sent (S95), and since an item change instruction is given here, the process branches to YES, and the item information in the area 52 of the main memory 32 is sent. Change to the new item information that came up and end. At the same time, in the client computer 200-2 that issued the change request,
It operates according to the flowchart shown in FIG. 9, and when the item change instruction arrives, the process branches to YES in step S87,
It is detected whether it matches the data (item information) sent in the item information change request (S89). If they match, it means that the request from the own device has been accepted, and the change request end is transmitted (S89A), but if they do not match, as shown in step S90,
After a lapse of a predetermined time, the process shifts to a process of again generating a request to change the item information. As a result, the item information Da originally set in the server computer 200-1 is shown in FIG.
As shown in 4, the item information is changed to Da2 and the item information of other client computers is also changed to Da2.

It is also assumed that a feed request is generated at the client computer 300-1 at some time. At this time, C of the client computer 300-1
The PU 31 is performing the process of the flowchart shown in FIG. 9, proceeds from step S81 to step S82, and branches to YES here. Therefore, the data stored in the main memory 31 or the external storage device 36 is taken out as the data to be fed (S83), and the requested data is created in the format shown in FIG. 5 (S85), and this is sent via the LAN interface 34. Send (S8
6). Then, in the feed request data, the identification information of the server computer 200-1 is set as the destination information, and the client computer 300 is set as the sender information.
Identification information of -1 is set, the serial number is omitted, a code indicating a feed request is set in the type information, and data to be fed is set in the data section. In this way, the client computer 300-
It is shown in FIG. 15 that the feed request data R-3 from 1 is sent to the server computer 200-1.

On the other hand, at this time, the server computer 200
-1 executes the program of the flowchart shown in FIG. That is, the arrival of data from the LAN 100 is monitored (S61), the feed request from the client computer 300-1 arrives, and the process proceeds to the feed request handling process (S64). The flowchart of FIG. 8 shows details of the feed request handling process.
That is, the CPU 31 of the server computer 200-1
Detects a feed request, fetches the data to be fed, changes the data into the data of the format shown in FIG. 5, which is sent out by broadcast, and sends out the data from the LAN interface 34 (S79). That is, a code designating all nodes is set in the destination information, the identification information of the server computer 200-1 is set in the transmission source information, a serial number is added, and the type information indicates delivery by a feed request. The code is set, and the requested information to be fed is set in the data section. In addition,
Client computer 300 relating to feed request-
The identification information No. 1 may be included in the data section or the like and set. In this case, the true source of the data becomes clear, which is effective for data processing and the like. In response to the feed request data R-3 sent from the client computer 300-1, the data R-3 is broadcast from the server computer 200-1.
FIG. 16 shows how the data F-2 corresponding to is transmitted.

As described above, the data transmitted by the broadcast is the client computer 300-1.
~ 300-5, the server computer 200-2 will receive. At this time, the CPU 31 of these nodes
Performs the processing by the program of the flowchart of FIG. 10, and executes steps S91, S92, S93, and S9.
4, the flow proceeds to S95, S97, where the flow branches to NO to output the fed data from the display 38 (S9
9).

At this time, the CPU 31 of the client computer 300-1 which has made the feed request sends the feed request according to the flowchart shown in FIG. 9 (S
After 86), is the feed information returned by broadcasting (S87) or time is up (S8)?
Since the detection process of 8) is performed and the data sent by requesting the feed from the own device is sent by broadcast, the process proceeds to step S89, and it is determined whether the sent data and the returned data match. Detect (S8
9) If they match, the process is ended, and if they do not match, as shown in step S90, the process proceeds to the process of generating a feed request again after the elapse of a predetermined time. Further, if the data relating to the feed request is not sent by the broadcast after the elapse of the predetermined time even though the feed request is made, the time-up is detected in step S88, and the above-mentioned step 90 is performed. Processing will be performed. In this way, data generated in any of the client computers can be received and shared by all the nodes of the system, and data can be transmitted and received substantially bidirectionally.

In the above embodiment, in the case of an item change request, the item information itself is key-inputted so that the item change request also includes the item information itself. You have to remember the item to
Especially when there are many items such as stock prices, it is complicated.
Therefore, in another embodiment, the server computer includes a table 50A that stores all item information of the data group 3,
Similarly, the client computer also includes a table 50B that stores all item information of the data group 3. Each of the tables 50A and 50B has a flag area corresponding to the item, and the item information is set to "1" in the flag area.
By setting. Specifically, when changing an item in a client computer or a server computer, a key operation for changing the item is performed. Correspondingly, in the main memory 32, the contents of the tables 50A and 50B are listed and displayed on the display unit 38, and the flag area is displayed corresponding to the change item input by a cursor or a mouse instruction (not shown). There is provided a program for changing "1" or "0". Therefore, the operator can easily change it. Then, in the item change request data and the item change instruction to the server computer 200-1, the data in the flag areas are serially arranged and set in the data section of FIG. In other words, the change can be made by sending the flag without sending the item related to the change. Further, in response to the increase / decrease of item information, the server computer 200 issues an instruction to add / delete item information.
-1 to add and delete the item information of the table 50B.

Further, although the field of the brand is used as an item in the above embodiments, the brand itself is used as an item in other embodiments. As a result, more detailed service can be provided. In addition, although the present embodiment has been described by taking the stock price as an example, the present invention is not limited to this, and can be used for data distribution of information such as commodity price information and various types of guidance. Furthermore, in the client computer, S97
In the above, it is detected that the inquiry is a confirmation of "live" or "dead", and it is decided whether to respond to the above inquiry or not depending on the operating status of the task that changed the item information. However, in another embodiment, it responds when its own device is operating regardless of whether the task is running or finished. According to such an embodiment, the "life" and "death" of the device itself are performed.
This makes it possible to return a response easily and simplify the process.

Further, in the above embodiment, the item information of the own device was changed in accordance with the item change instruction, but in another embodiment, the item change refusal can be set in the client computer. If the setting is made, the item information is not changed as far as the own device is concerned, even if an item change instruction comes. According to such an embodiment, by the item information unique to the client computer,
Data can be selected from incoming data.

[0052]

As described above, according to the invention described in claim 1 of the present application, when an item change request arrives via the communication network in the server computer, the item information is changed accordingly. Since the processing is performed, it is possible to send the change request from the client computer side and change the item information set in the server computer. Therefore, it is possible to select any item data from the original data group. It is convenient to change whether to deliver.

As described above, according to the invention of claim 2 of the present application, when an item change request arrives via the communication network, it is determined from which node the item information is changed based on the request. Based on the node information shown, by inquiring whether the corresponding change request is valid or not, exclusive processing of changing item information can be performed, so changes that ignore the node that made the change will not be made. , Change of which item of data is selected from the original data group and distributed is appropriately performed.

As described above, according to the invention of claim 3 of the present application, the inquiry as to whether or not the node is in operation is used instead of the inquiry as to whether the corresponding change request is valid, Since exclusive processing for changing item information can be performed, inquiry and response can be easily performed, and the procedure currently supported in the communication network can be diverted and convenient.

As described above, according to the invention of claim 4 of the present application, when the server computer changes the item information of its own node, it sends an instruction to each node to change the item information. Then, since the item information used for selecting desired data from the incoming data provided in each node is shared, it is possible to select data using the item information that matches the data distribution source. , Ensure proper data selection.

As described above, according to the invention of claim 5 of the present application, in the client computer,
It detects whether or not a change request for item information has occurred, and when that request is issued, a change request for item information is sent to the relevant server computer to change the item information of the server computer. , It is possible to change the item information set in the server computer by sending a change request from the client computer side. Therefore, change which item data is selected from the original data group and distributed. It is convenient and convenient.

According to the invention described in claim 6 of the present application, as described above, in the client computer,
In response to an item change request from the server computer, the item information corresponding to the data distribution from the server computer is set by performing the change process on the item information in the item information storage means. It is possible to select data using item information, and ensure proper data selection.

As described above, according to the invention of claim 7 of the present application, the client computer sends back a response to the inquiry sent from the server computer as to whether the node is in operation. It is possible to perform exclusive processing for changing item information in the server computer by using it, and it is no longer possible to make changes ignoring the node that made the change, and it is appropriate to change which item data is selected from the original data group and distributed To be done.

As described above, according to the invention of claim 8 of the present application, in response to a data feed request coming from the client computer, the server computer performs a process related to the data feed relating to the request, Since the data sent from the client computer is distributed to each client computer and the other server computer, the data generated in the client computer can be shared by the other client computer and the server computer, and the client computer substantially transmits the data. There is an advantage that can be done.

As described above, according to the invention of claim 9 of the present application, in the client computer,
Whether or not there is a request for a data feed request to the server computer is detected, and when the request is generated, a data feed request is sent to the server computer, and each client computer and other servers are sent via the server computer. Since the data is distributed to the computer, there is an advantage that the data generated in the client computer can be shared by other client computers and the server computer, and the client computer can substantially perform the data transmission.

As described above, according to the invention described in claim 10 of the present application, when the item information is changed, a process for changing the corresponding item information is performed by using the flag, and the item information itself is changed. There is an effect that the processing can be simplified by performing the data processing by the flag without inputting or transmitting / receiving.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a server computer of a data distribution system according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a client computer of the data distribution system according to the embodiment of the present invention.

FIG. 3 is a block diagram of a server computer or a client computer of the data distribution system according to the embodiment of the present invention.

FIG. 4 is a diagram showing an example of item information storage means provided in each node of the data distribution system according to the embodiment of the present invention.

FIG. 5 is a diagram showing a format of data transmitted and received in the data distribution system according to the embodiment of the present invention.

FIG. 6 is a flowchart for explaining the operation of the server computer of the data distribution system according to the embodiment of the present invention.

FIG. 7 is a flowchart for explaining the operation of the server computer of the data distribution system according to the embodiment of the present invention.

FIG. 8 is a flowchart for explaining the operation of the server computer of the data distribution system according to the embodiment of the present invention.

FIG. 9 is a flowchart for explaining the operation of the client computer of the data distribution system according to the embodiment of the present invention.

FIG. 10 is a flowchart for explaining the operation of the client computer of the data distribution system according to the embodiment of the present invention.

FIG. 11 is a configuration diagram of a data distribution system according to an embodiment of the present invention configured by LAN.

FIG. 12 is a diagram showing an example of a data group supplied to the data distribution system according to the embodiment of the present invention.

FIG. 13 is a diagram for explaining an item change request operation of the data distribution system according to the embodiment of the present invention.

FIG. 14 is a diagram for explaining an item change request operation of the data distribution system according to the embodiment of the present invention.

FIG. 15 is a diagram for explaining a feed request operation of the data distribution system according to the embodiment of the present invention.

FIG. 16 is a diagram for explaining an item changing operation and a feed requesting operation of the data distribution system according to the embodiment of the present invention.

FIG. 17 is a diagram showing an example of item information storage means provided in a node of a server computer of a data distribution system according to another embodiment of the present invention.

FIG. 18 is a diagram showing an example of item information storage means provided in a node of a client computer of a data distribution system according to another embodiment of the present invention.

FIG. 19 is a diagram for explaining an item information changing process of the data distribution system according to the conventional example.

FIG. 20 is a diagram for explaining a data distribution operation of a data distribution system according to a conventional example.

[Explanation of symbols]

1, 18 Input means 2, 20
Item information storage means 3 Data group 4 Data distribution processing means 5 Feed request handling processing means 6 Item change request handling processing means 7 Change request node storage means 8, 12
Receiver 9, 11 Transmitter 13 Feed request processing means 14 Item change request processing means 15 Item change processing means 16 Arrival information processing means 17 Feed information storage means 19 Response means 21 Output means 30 System bus 31 CP
U 32 Main memory 33 Data input interface 34 LAN interface 35 External storage control unit 36 External storage device 37 Display control unit 38 Display unit 39 Keyboard control unit 40 Keyboard input device 100 L
AN 200-1200-2 Server computer 300-1 to 300-5 Client computer

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location H04L 12/58

Claims (10)

[Claims] 1. A server computer and a client computer are connected to a communication network, and data belonging to a predetermined item is selected from a data group configured such that one or more data belong to each of a plurality of items. ,
In a data distribution system in which the server computer distributes to the client computer via the communication network, the server computer stores item information storage means for storing item information used when selecting desired data in the data group. And a item change request handling processing unit that performs a change process regarding item information in the item information storage unit in response to an item change request coming through the communication network. 2. A change request node storage means for storing node information indicating which node the item information stored in the item information storage means is changed based on a request from which node, and an item change request handling processing means. 2. The data distribution system according to claim 1, wherein the inquiry is made to the node as to whether or not the corresponding change request is valid based on the node information stored in the change request node storage means. 3. The item change request correspondence processing means uses the inquiry as to whether or not the node is in operation, instead of the inquiry as to whether or not the corresponding change request is valid. Data distribution system. 4. Each node is provided with item information storage means for storing item information used when selecting desired data from incoming data, and the item change request handling processing means is the item storage means of its own node. 4. The item information of claim 1 is changed, and at the same time, an instruction is sent to each node to change the item information of the item information storage means provided in each node. The data distribution system described in the section. 5. A change request processing means for detecting, in the client computer, an occurrence of a change request for the item information in the item information storage means provided in the server computer, and for sending the request for changing the item information to the server computer. The data distribution system according to any one of claims 1 to 4, further comprising: 6. The client computer, the item information storage means for storing item information used when selecting desired data from incoming data, and the item information storage means in response to an item change request coming from the server computer. 6. The data distribution system according to any one of claims 1 to 5, further comprising an item change control unit that performs a change process regarding the item information. 7. The client computer is provided with response means for returning a response to an inquiry from the server computer as to whether the node is operating or not. The data distribution system according to item 1. 8. A server computer and a client computer are connected to a communication network, and data belonging to a predetermined item is selected from a data group configured such that one or more data belong to each of a plurality of items. ,
In a data distribution system in which a server computer distributes to a client computer via a communication network, the server computer, in response to a feed request for data coming from the client computer, a feed request for performing processing related to the data feed related to the request. A data distribution system having a corresponding processing means. 9. The client computer is provided with a feed request processing means for detecting generation of a request for a data feed request to a server computer and sending a data feed request to the server computer. The data distribution system according to claim 8. 10. The item information storage means of each node stores all item information related to the data group and a flag indicating whether or not there is a setting for this item information in association with each other, and is stored in the item information storage means. 10. The data distribution system according to claim 1, wherein when the item information is changed, the flag is used to perform a process related to the change of the corresponding item information.