JP2772263B2 - Broadcast data transfer method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast data transfer system, and more particularly to a system having a plurality of information processing apparatuses capable of communicating with each other via a communication network. The present invention relates to a broadcast data transfer method for sequentially transferring the same data.

[0002]

2. Description of the Related Art FIG. 5 is a system block diagram showing an example of a conventional broadcast data transfer system.

Referring to FIG. 5, in this conventional system, an information processing apparatus of an upper station transfers the same data to information processing apparatuses of two stations immediately below its own station.

That is, the highest station at the y0 level is the master device (M) of the broadcast source, and the immediately lower y1 level 2
The information processing device of the station is the slave device (SL) of the broadcast destination, and M transfers the same data to the SLs of the two stations.

Similarly, the information processing devices of the two stations at the y1 level each become M and the S information of the two stations at the y2 level immediately below M
Transfer the same data to L.

Similarly, the information processing devices of the two stations at the y2 level each become M, and the information processing devices of the two stations at the y3 level are M Then, the same data is transferred to the two SLs at the lower y4 level.

In other words, in this conventional example, when transferring the same data to a plurality of information processing apparatuses, the information processing apparatuses of the lower stations under the upper station of the transfer source are fixedly determined in advance. Each upper station except the highest station (broadcasting source) becomes a relay station, and relays the same data to a number of lower stations (broadcasting destinations) in a so-called mouse manner, so that it is developed only in the y direction. .

Further, when the data transfer to the SL under the control of the own station is completed, the information processing apparatus of each upper station can transfer the data to the SL of another station even if the data transfer has not been completed as a whole system. Did not.

Further, when an abnormality has occurred in the data transfer from the own station, the data cannot be transferred to the SL under the own station.

[0010]

In this conventional broadcast data transfer system, since the master-slave relationship between the upper station and the lower station is fixedly determined, any station can be the broadcast source. As a result, not only cannot the data transfer be started, but also when an abnormal data transfer occurs in the upper station, it cannot be flexibly coped with.

Also, there is a problem that a large difference occurs in the data transfer end time between the information processing apparatus of a station that has already finished transmitting and receiving data and the information processing apparatus of an unfinished station.

[0012] An object of the present invention is to provide a broadcast system in which the same data is transferred to a large number of information processing apparatuses, so that the broadcaster manages the data transfer status in a unified manner so that the same data is transmitted to all information processing apparatuses in the system. Another object of the present invention is to provide a broadcast data transfer method capable of shortening the time until the transfer of data is completed and flexibly coping with the occurrence of a data transfer abnormality.

[0013]

According to the present invention, a first information processing apparatus and a number of other second information processing apparatuses in a system including a plurality of information processing apparatuses capable of mutually communicating with each other through a communication network. In the broadcast data transfer method in which the same data is sequentially transferred to the second information processing apparatus, the first information processing apparatus switches the second information processing apparatus when the transfer of the same data to the second information processing apparatus ends normally. Position it as a relay station and instruct it to transfer data ,
Also the first information processing apparatus itself constantly have line transfer of the same data, the information processing instrumentation that received normal data
Broadcast data transfer scheme is obtained, characterized in that it comprises a row cormorants means sequentially transfer instruction to the location.

Further, the first information processing apparatus of the broadcast source transmits an address management table composed of the station number of the second information processing apparatus of the broadcast destination, and performs data transfer next to the address management table. Centrally manages the next pointer indicating the address of the second information processing device of the broadcast destination to be performed
And the broadcast source, respond to the situation of the relay station and the broadcast destination
And a message sending means for sending a message indicating the contents to be processed.

[0015]

Next, the present invention will be described with reference to the drawings.

FIG. 1A is a block diagram showing a station configuration in a system according to an embodiment of the present invention, FIG. 1B is a configuration diagram of an example of an address management table in FIG.
FIG. 2 is a diagram showing messages used in the present embodiment, FIG. 3 is a sequence diagram for explaining the transfer of the same data in the present embodiment, and FIG. 4 is a diagram for explaining a broadcast data transfer operation in the system of the present invention. FIG.

First, referring to FIG. 4, a plurality of information processing devices (PRC) are developed in the x direction and the y direction. An arbitrary PRC, for example, PRC00, is a broadcast source,
When data transfer is performed to PRC01 at the x0, y1 level,
PRC01 acts as a relay station and has three PRCs at the y2 level.
The data received from PRC01 is transferred to 021, 022 and 023. At this time, the PRC00 performs data transfer to the PRC11 at the x1, y1 level.

Next, the PRC 021 transfers data to the lower two PRCs 031 and 032 at the y3 level, and at the same time, the PRC 11 transmits data to the lower PRCs 121 and 12.
2 and at the same time, PRC00 sets x
Data transfer is performed to the PRC 21 of the 2, y1 level.

Next, the PRC031 performs data transfer to the lower y4 level PRC04, and at the same time, the PRC12.
1 transfers data to the lower PRC 13, and at the same time, the PRC 21 transfers data to the lower PRC 22.

Thus, in this system, the lower y
When the same-level PRC is acting as a relay station and transferring the same data to a lower-order PRC, the y0-level broadcast source PRC00 is also used for other x-level and y1-level PRCs.
Continue data transfer to

Next, the system according to the present embodiment is shown in FIG.
As shown in (a) and (b), a plurality of information processing devices (PRC) connected to a communication network (NW) 2
, 37, and PRC1 is a broadcast source information processing device that can sequentially transfer the same data to many other PRCs 31, 32,. Therefore, the PRCs 31, 32,.
Reference numeral 7 denotes a broadcast information processing apparatus.

Then, the broadcast source PRC1 is the broadcast destination PRC1.
An address management table 12 composed of C station numbers;
A next pointer 13 in the address management table 12 indicating the address of the PRC of the broadcast destination to which data is to be transferred next, and the same data to be transferred to the broadcast destination and to be processed by the broadcast source and the broadcast destination respectively. A data transmission / reception unit 11 for transmitting a message designating the content.

The address management table 12 is a tool having a man-machine interface, and it is sufficient that the specification / cancellation, filing, etc. can be executed by a maintenance person, but it may be fixedly stored in a program. The precondition is that data can be transferred bidirectionally.

FIG. 2 shows a message transmitted by the data transmission / reception unit 11 of the broadcast source PRC1. For example, a data message is sent from a maintenance person (broadcasting source) to a broadcast destination station or from a relay station to a lower broadcast destination station, and “transfer start” (DT) indicating the head of transfer data is performed.
1) etc. are included.

[0025] A "data reception end message MS1 (Normal / Abnormal)" is a message that responds as to whether or not data has been normally transferred from the broadcast destination station to the maintenance person or the relay station. An instruction message for processing at the relay station transmitted to the relay station includes a "data transfer instruction message MS2 (station address)".

The broadcast destination PRC receiving the data transfer from the broadcast source PRC retains the same data without changing the received data. It has the function of transferring to the PRC.

Next, the operation of this embodiment will be described with reference to FIGS.
This will be described with reference to FIGS. Here, the broadcasters PRC1 to PRC31, which manage many stations,
.., A procedure for transferring the same data to the PRC 37 to update the program will be described as an example.

The broadcast source PRC 1 transmits a data transfer start message DT 1 to the PRC 31 registered at the head of the address management table 12 to start program transfer. At this time, the PRC is used as the second address of the address management table 12 by the next pointer 13.
32 addresses are specified in advance.

Then, when the PRC 31 normally receives the transfer data, the PRC 31 returns a data reception end message MS1 (normal) to the PRC1.

Next, the PRC1 transmits a data transfer instruction message MS2 (PRC32 address) to the PRC31 to instruct the PRC31 to transfer the program to the next address using the PRC31 as a relay station, and to change the next address to the PRC3.
The address is updated from the 2 address to the PRC33 address.

Data transfer instruction message MS2 (PRC
The PRC 31 receiving the (32 addresses) transmits a data transfer start message DT1 to the PRC 32 and starts the transfer of the program.

When the PRC 32 returns a data transfer end message MS1 (normal) to the PRC 31 when the transfer program is normally received, the PRC 3 of the relay station is returned.
1 is a data transfer end message MS to the broadcast source PRC1.
3 (PRC32 address, normal) is returned.

Next, the PRC 1 transmits a data transfer start message DT 1 to the PRC 33 to start the transfer of the program. At this time, the next address is updated from the PRC33 address to the PRC34 address.

If the PRC 33 returns a data reception end message MS1 (normal) to the PRC1 when the transfer program is normally received, the PRC 32 of the relay station returns.
Is a data transfer end message MS3 to the broadcast source PRC1.
(PRC32 address, normal) is returned.

When the broadcast source PRC1 receives a report of the data transfer end message MS3 (PRC32 address / normal) from the relay station PRC31 to the broadcast destination PRC32, the PRC1 further uses the PRC31 and the PRC32 as relay stations, respectively. Destination PRC34 and PRC3
5 to transmit a data transfer instruction message MS2 (PRC34 address and PRC35 address) to instruct data transfer. At this time, the next address is set to PRC34.
Address to the PRC35 address, and further to the PRC36
Update to address.

Then, PRC31 and PRC32 which have received the data transfer instruction message MS2 from PRC1 transmit a data transfer start message DT1 to the broadcast destination PRC34 and PRC35, respectively, and start the transfer of the program.

When the program transfer to the PRC 33 ends normally, the PRC 1 uses the PRC 33 as a relay station and sends a data transfer instruction message MS2 to the PRC 33.
(PRC36 address) to send the next address PRC3
6 to perform data transfer.

At this time, the next address is updated from the PRC 36 address to the PRC 37 address.

Next, the PRC 33 transmits a data transfer start message DT1 to the PRC 36 to start the transfer of the program.

Thereafter, the data transfer end message MS3 (PRC) of the report that the data has been normally transferred to the PRC 36.
36 addresses (normal) from the PRC 33, the PR
C1 transmits a data transfer start message DT1 to the PRC 37 to start transfer of the program.

Note that the broadcast source PRC1 is the broadcast destination PRC1.
When receiving the data reception end message MS1 (abnormal) from 3i, the PRC1 sends the data transfer start message DT1 to the PRC3i again to start the program transfer.

When the PRC 1 detects an abnormality during data transfer to the broadcast destination PRC 3 i, it transfers the program to the broadcast destination PRC at the next address of the PRC 3 i.

Further, when PRC1 receives a data transfer end message MS3 (abnormal) from the PRC of the relay station, it instructs this relay station to perform data transfer to the PRC of the next address.

Then, a series of processing when the data transfer end (station address / normal / abnormal) is received is repeated until "END" is found in the address management table 12.

[0045]

As described above, according to the present invention, the first information processing apparatus in a system having a plurality of information processing apparatuses capable of mutually communicating with each other through a communication network can be used for many other second information processing apparatuses. In a broadcast data transfer method for sequentially transferring the same data, the first information processing device normally terminates the transfer of the same data to the second information processing device. was carried out instructions positioned to it in the data transfer to the relay station, in case of trouble have line transfer of even the same data the first information processing apparatus itself, normally de
Means for sequentially issuing a transfer instruction to the information processing apparatus that has received the data, and more specifically, the first information processing apparatus of the broadcast source an address management table with the station number of the second information processing apparatus, centralizes next pointer to the address of the second information processing apparatus broadcast destination to transfer data to the next of the address management table Dohomoto, the situation of the relay station and broadcast destination
Message transmission means for transmitting a message indicating the contents to be processed in response to the request, so that the broadcast source and many broadcast destinations do not have a fixed master-slave relationship, The information processing apparatus operates as instructed by the information processing apparatus of an arbitrary broadcast source to perform data transfer processing to all broadcast destinations, and has the effect of significantly reducing the transfer processing time.

Further, even when an abnormality occurs in the information processing device of the upper station, there is an effect that it is possible to flexibly cope with the abnormality by the instruction from the broadcast source.

[Brief description of the drawings]

FIG. 1A is a block diagram illustrating a station configuration in a system according to an embodiment of the present invention, and FIG. 1B is a configuration diagram of an example of an address management table in FIG.

FIG. 2 is a diagram showing messages used in the embodiment.

FIG. 3 is a sequence diagram for explaining transfer of the same data in the embodiment.

FIG. 4 is a diagram for explaining a broadcast data transfer operation in the system of the present invention.

FIG. 5 is a system block diagram showing an example of a conventional broadcast data transfer method.

[Explanation of symbols]

 1, 31, ..., 37, 3i Information processing device (PRC) 2 Communication network (NW) 11 Data transmission / reception unit 12 Address management table 13 Next pointer

Claims (2)

(57) [Claims] Broadcast data for sequentially transferring the same data from a first information processing apparatus to a number of other second information processing apparatuses in a system including a plurality of information processing apparatuses capable of communicating with each other via a communication network. In the transfer method, the first information processing device is the second information processing device.
Wherein performs instruction when it succeeds to transfer the same data to locate the second information processing apparatus to the relay station it to transfer data to, the first of the abnormality information processing apparatus itself of the same data There line the transfer, receiving a normal data
Broadcast data transfer method, characterized in that it comprises a row cormorants means sequentially transfer instruction to the information processing apparatus Shin. 2. The first information processing apparatus as a broadcast source transmits an address management table including a station number of the second information processing apparatus as a broadcast destination, and a data transfer following the address management table. The next pointer indicating the address of the second information processing device of the broadcast destination to be performed is unitarily managed, and according to the status of the broadcast source, the relay station, and the broadcast destination , <br / 2. The broadcast data transfer system according to claim 1, further comprising: message sending means for sending a message indicating contents to be processed.