JP2000181737A - Triplet information processing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To select normal output and to give information on the abnormality of a system based on majority logic even if an information processing part is asynchronous. SOLUTION: An output data buffer part 220 buffering comparison results from the information processors 101, 102 and 103 of one system or two systems, which are preferentially received, until processing results that are asynchronously outputted from the information processors 101, 102 and 103 against the same instruction is installed. A majority decision means 230 compares the processing results of not less than two systems based on majority decision logic and selects the outputs of the two systems where the processing results are matched are selected as the normal processing results.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a triple information processing system for selecting a normal processing result from a three-system information processing apparatus that executes processing in response to the same instruction.

[0002]

2. Description of the Related Art As a conventional triple information processing system,
For example, there is one shown in FIG. This is because, in order to synchronize the operations of the information processing units 31, 32, and 33 of one system, one clock 20 outputs the information processing units 31, 3, and 3 at the same timing.
2, 33. Therefore, these three systems of information processing units 31, 32, and 33 execute processing at the same timing and supply the processing results to the majority decision unit 40. Therefore, the majority decision unit 40 compares these processing results based on majority logic, and supplies a normal processing result and an abnormality detection signal to the input / output interface 50.

[0003]

However, in such a conventional triple information processing system in which the information processing of the three systems is synchronously operated, the information processing units 31, 32 and 33 are provided with three information processing units.
In order to synchronize with the system, it is necessary to construct the system in the same system, and accordingly, there is a problem that the system can be constructed only by dedicated hardware. Further, in order to synchronize the information processing units 31, 32, and 33 with all three systems, if the synchronization of the processing results is lost due to a bit error or the like of any one system,
There has been a problem that the majority decision unit determines that there is an abnormality, and even if it is not a failure, it is reported as an abnormality notification.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and provides a highly reliable triple information processing system capable of selecting a normal output and notifying a system abnormality based on majority logic even when the information processing unit is asynchronous. The purpose is to provide a system.

[0005]

To achieve the above object,
In the triple information processing system according to the first aspect of the present invention, the first received information is received until the processing result asynchronously output from all of the information processing apparatuses for the same instruction is received.
An output data buffer unit for buffering a comparison result from the information processing device of the system or the system 2 is provided in the majority decision device;
The majority decision means receives the processing results of two or more systems including the buffered processing results for the same instruction, compares the processing results of each system based on majority logic, and finds that the processing results of the two systems match. The output of the system is selected as a normal processing result. On the other hand, when the processing results of the two systems do not match, the majority of each of the processing results of the second system is compared with the processing results of the remaining one system. A matching processing result is selected as a normal processing result, and a non-matching system is notified to outside as failure information.

The triple information processing system according to the second aspect of the present invention provides the information processing apparatus of the third system with a command to the other information processing apparatus on a network connected to the information processing apparatus via the majority device. It is issued from an input / output device.

In the triple information processing system according to a third aspect of the present invention, the majority decision device replaces a transaction ID added to the command received via the network with a unique ID for transaction management. And transfers the unique ID to the original transaction ID, receives the processing results from these information processing apparatuses, and transfers the processing results to the network in a predetermined order. An ID change / output arbitration unit for arbitrating output is provided.

Further, in the triple information processing system according to the present invention, when the output data buffer unit receives the processing results of the three systems for the same instruction at the same timing, the buffering of the processing results is performed. The ring is not passed to the majority decision means.

According to a third aspect of the present invention, in the triple information processing system, the output data buffer unit includes an I header included in a header of a processing result received from the third information processing apparatus.
An ID comparison unit for performing a majority comparison of D is provided.

In the triple information processing system according to the present invention, when the arbitration receives the processing results for two instructions at the same time, the arbitration is performed in an ID management table in which the transaction ID and the unique ID are associated with each other. This is performed in the order in which the registered instructions are received.

Further, in the triple information processing system according to the invention of claim 7, the output data buffer unit includes
From the three sets of two sets of comparison results from the D comparison unit, a flag is generated depending on whether the same instruction has received processing results from the two sets at the same time and no processing result has been received at the same time. An ID flag generator for registering each ID as a set address together with output data is provided.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a triple information processing system according to the present invention.
, 40n are input / output devices, and 411 is another information processing device, which is a three-system information processing device 101, 102, 103 that operates asynchronously via the network 300.
Issue instructions to These asynchronous information processing devices 10
1, 102, and 103 receive the same command from the majority device 200 and execute the processing. Reference numeral 200 denotes a majority decision device, and input / output interfaces 211 to 214 of the information processing device 10 such as a network adapter, for example.
This is an interface for connecting the network 300 to the network 1, 102, 103.

Of these, the input / output interface 21
4 is, for example, an input / output device 4
01, and outputs the command to the ID reassignment / output arbitration unit 241 of the transaction management unit 240. Upon receiving the command, the ID reassignment / output arbitration unit 241 accesses the ID management table unit 242 and sets the transaction ID, which is one of the control data (hereinafter referred to as “header”) attached to the command, as the transaction ID. The command is transferred to the input / output interfaces 211, 212, and 213 as the same command instead of the unique ID for management. Reference numeral 242 denotes an ID management table, which is a received transaction ID and a unique ID.
Are registered in the ID management table. Note that the information processing apparatuses 101, 102, and 103 receive unique I / Os from input / output interfaces 211, 212, and 213, respectively.
When the instruction having D is received, each of the information processing apparatuses 101, 102, and 103 receives the instruction at a unique clock timing, executes a process according to each processing capability, and outputs a processing result to the majority decision device 200. .

Reference numeral 220 denotes an output data buffer unit.
When the processing results from the three systems are received via the respective input / output interfaces 211 to 213, and the processing results for the same instruction are received at different timings, the preceding processing is performed until the processing results from all three systems for the same instruction are received. The processing result received from the first or second system is buffered. When processing results are received from all three systems at the same timing for the same instruction,
Direct comparison unit 232 without buffering the processing result
Output the processing result to When an output for the same instruction is received from two or more systems, the comparing unit 232 compares the outputs of the two systems and outputs a match or mismatch signal to the majority decision unit 234.

Further, reference numeral 234 denotes a majority decision judging unit which detects, for example, outputs from the two systems of the information processing apparatuses 101 and 102 for the same command, and has not yet received an output from the system of the information processing apparatus 103. If there is, the information processing device 10
If the output results of the two systems 1 and 102 are compared in advance and a comparison match is detected, at least these information processing apparatuses 10
The output data selection unit 235 determines that the two systems 1 and 102 are normal, and selects and outputs these processing results.
Outputs a data output selection signal. At this time, the result of comparison with the output of the other remaining systems may not match, but here, no abnormality is detected. If the processing result of the instruction from the information processing apparatus 103 is detected at a later timing, the output result of the information processing apparatuses 101 and 102 is compared with the output result of the information processing apparatus based on majority logic, and the information processing apparatus 103 becomes normal for the first time. Or abnormal.

For the same instruction, the processing result from the first system is buffered before the processing result from the second system is simultaneously detected, or the processing result from the third system is detected at the same timing. If detected, the majority decision unit 23
4 determines a normal system or an abnormal system based on majority logic, and outputs a data output selection signal to the output data selection unit 235. If it is determined that the system 1 is abnormal based on the determination result of the majority determination unit 234, the failure information reporting unit 280
Abnormality of the corresponding system is notified to the outside via. In parallel with the processing result for the same instruction being output from the output data buffer 224 to the comparing units 232 and 233,
The output data selection unit 235 receives processing results from each system. When receiving the data output selection signal from the majority decision judging unit 234, the output data selection unit 235 selects one of the received processing results according to the instruction of the data output selection signal, and selects the ID reassignment / output arbitration unit 241.
Output to

When the ID reassignment / output arbitration unit 241 receives the processing result, it accesses the ID management table unit 242, and obtains the transaction ID included in the processing result data from the command request source. Convert to ID. At this time, if the processing results for the two instructions are received at the same time, arbitration is performed so that the processing results are output in the order of the received instructions from the registration information from the ID management table unit 242. Further, the ID management table unit 242 determines that the processing result for the unique ID has been received, and resets a table of the transaction ID and the unique ID that has been managed to give permission to add to the subsequently received command. release. The processing result is output to the input / output device 401 of the instruction request source via the input / output interface 214 and the network 300.

FIG. 2 shows the output data buffer unit 2 shown in FIG.
20 shows a detailed configuration. In the figure, 222 is an ID
Comparing units, which are information processing devices 101, 102, 103
When the processing result is received, a majority comparison of the IDs included in the header of the processing result is performed, and it is determined whether or not the three processing results are for the same instruction. In this case, it functions to output 1 to the ID flag generation unit 223 and the comparison data selection unit 231 to output 0 for other comparison results. Therefore, three sets of comparison results are output to the ID flag generator 223 for each two systems. The ID flag generation unit 223
Is 1 if the processing result for the same instruction is received from the 2nd system at the same time from the three sets of comparison results from the ID comparison unit,
If there is no processing result received at the same time, 0 is output.

Reference numeral 224 denotes an output data buffer, which is the output data 221a, 221 received from the third system.
The IDs b and 221c are used as set addresses to index and register the ID flag and output data, respectively. Reference numeral 231 denotes a comparison data selection unit in the majority decision / failure detection unit 230 as majority decision means.
The comparison unit 232 or the comparison unit 233 selects which of the comparison result and the processing result indexed from the output data buffer 224 is to be compared. For example, when the processing results of the two systems of information 101 and 102 among the processing results from the three systems correspond to the output of the same instruction, the ID flag generation unit 223 determines that the processing results for the same instruction have been simultaneously received from the second system. The output 1 is output. At the same time, comparison of the processing results for the same instruction and indexing of the output data buffer 224 are performed.
The comparison of the processing results of the two systems is executed by the comparator 232ab.

Further, the output data buffer 224 is indexed in order to check whether the processing result preceding the same instruction is registered in the output data buffer 224.
As a result of the indexing, if the preceding processing result is not registered in the output data buffer 224, the entry N2 indicated by the set address of the output data buffer 224 is waited for the processing result from the remaining information processing device 103.
An ID flag is set in 24n, and the processing result from the second system is registered. On the other hand, when the processing result of the information processing apparatus 103 of the system for the same instruction is registered at the time of indexing the output data buffer 224, the comparison data selecting unit 231 sets the two compared data of each system to the just received data. Is selected as the data to be compared of the system of the information processing apparatus 103, which is indexed from the output data buffer 224, and three comparisons are performed by the comparison unit 232, respectively.

Of the processing results received in parallel, those of the information processing apparatus 103 are the information processing apparatuses 101 and 102.
The ID flag generation unit 223 outputs 0 indicating that there is no processing result for the same instruction, since the ID is different from that of the system, that is, for a different instruction. At the same time, the output data buffer 224 is indexed. As a result of the indexing, if the preceding processing result is not registered in the output data buffer 224, the ID is added to the entry N224n indicated by the set address of the output data buffer 224 to wait for the processing results from the remaining systems A and B. A flag is set, and the processing result from the system of the information processing apparatus 103 is registered. When the processing result of the first or second system is registered prior to the same instruction at the time of indexing the output data buffer 224, the comparison data selection unit 231 of the majority comparison / failure detection unit 230 determines the As the data to be compared, the data just received is selected, and as the data to be compared of the two systems of the information processing apparatuses 101 and 102, data indexed from the output data buffer 224 is selected, and the comparison unit 233 performs comparison.

When only the processing result of one of the two systems of the information processing apparatuses 101 and 102 has been registered, the indexed ID flag indicates 0, and the processing result of the second system has been registered. Indicates 1 so that it can be determined. If only the processing result of the first system has been registered, in order to wait for the processing result from the remaining information processing apparatus 101 or 102,
Again, an ID flag is set to the entry M224m of the set address corresponding to the ID of the output data buffer 224, and
Register the processing result from the system. At this time, the ID flag is registered as 1. If all the processing results from the third system are for the same instruction, the comparison data selection unit 231 selects the data from the third system that has been accepted for all three processing results, and the comparison unit 232 compares the two systems with each other. Perform for three sets.
In this case, indexing and registration for output data buffer 224 are not performed.

The information processing apparatuses 101 to 10 shown in FIG.
3. Other information processing devices 411, input / output devices 401 to 40
Since n and the network 300 are well known to those skilled in the art and are not directly related to the present invention, the detailed configuration is omitted. Further, the information processing devices 101 to 103 of the third system may be input / output devices of the third system, and the input / output devices 401 to 40n that issue instructions may be information processing devices. Further, the input / output devices 401 to 40n connected to the network 300 may be directly connected to the input / output interface 214 of the majority decision device 200 without passing through the network 300.

Next, the operation of performing a majority comparison for the same instruction and selecting a processing result will be described with reference to the flowcharts of FIGS. First, when the input / output device 401 issues an instruction (step S1), the majority device 200 receives the instruction via the network 300, and the transaction manager 240 changes the transaction ID as described above (step S2). ), And supplies the same command to the three information processing apparatuses 101, 102, and 103 at the same timing (step S).
Along with 3), the ID is registered in the ID management table 242 (step S4). For this reason, the 3rd information processing device 1
01, 102, and 103 execute processing in synchronization with the supplied instructions, respectively, in synchronization with the clock timing (step S
5, Step S6, Step S7).

On the other hand, the majority decision device 200 receives a processing result which is an execution result of each of the above processes (step S8),
The number of replies of output data for the same instruction is detected (step S9). If the number of replies is two, the output data buffer 224 is indexed to check for preceding output data (step S10). The output data of the second system for the same instruction is compared (step S11), and if they do not match, the output of the second system is buffered as preceding output data (step S12). Step S11
If it is determined that the output data of the two systems match, the transaction ID is converted (step S13), normal output data is selected, and the input / output interface 214
To the input / output device 40 (step S14).
1 (step S15).

If it is determined in step S9 that the number of output data replies for the same instruction is 1, the output data buffer 224 is indexed to detect the presence or absence of preceding output data (step S16). in case of,
The output of the first system is buffered as the preceding output data (step S17). On the other hand, if there is preceding output data, the number of replies of the preceding output data for the same instruction is detected (step S18). If the number of replies of the preceding output data is 1, the data of the second system output for the same instruction is compared. Then, if they do not match, the output of the second system is buffered as preceding output data (step S19).
20).

On the other hand, when the number of output data replies is determined to be 3 in step S9, when it is determined that there is preceding output data in step S10, and when the number of preceding output data replies is determined to be 2 in step S18. Then, the 3rd system output data for the same instruction is subjected to majority comparison (step S21), and if the 1st system or more does not match, the 3rd system status notification signal is generated and transferred (step S22). On the other hand, if two or more systems match, transaction I
Subsequent to the conversion of D (step S23), the corresponding transaction ID in the execution waiting buffer is invalidated (step S24), and normal output data is selected and transferred to the input / output interface (step S25).

The operation from the issuance of the instruction to the output of the processing result of each of the three information processing apparatuses 101, 102, and 103 will be described with reference to the timing chart of the signals of the respective circuits shown in FIG. For example, when the majority device 200 receives a command from the input / output device 401, the majority device 2
In step 00, the transaction ID is changed and the same instruction is supplied to the third information processing apparatus at the same timing X1. The information processing apparatuses 101, 102, and 103 of the third system execute the supplied instructions at their respective clock timings a1, b.
The processing is executed in synchronization with 1, c1. Majority device 20
When the processing result, which is the execution result of each information processing device, is received, 0 is synchronized with the clock of the majority device 200 at any time until the processing result of all three systems is received.
The two processing results are buffered as X2a and X2b.

When processing results from at least two systems are received for the same instruction, and when the comparison results of the processing results match, a normal processing result is selected without issuing the processing result from the remaining one system, and the instruction is issued. The data is output to the original input / output device 401 as output data X3. When the processing results of all three systems for the same instruction are completed, a normal or abnormal system is detected based on majority logic, and if there is an abnormality, it is reported as fault information. If the instruction has not been output to the input / output device 401 at this time, a normal processing result X4 is output.

[0030]

As described above, according to the present invention, the first or second system information received earlier until the processing result asynchronously output from all of the information processing devices for the same instruction is received. An output data buffer unit for buffering a comparison result from the processing device is provided in the majority decision device. The majority decision means receives two or more processing results including the processing result buffered for the same instruction, and Are compared based on majority logic, and the output of the system in which the processing results of the two systems match is selected as the normal processing result. On the other hand, if the processing results of the two systems do not match,
A majority decision is performed between each of the processing results of the two systems and the processing result of the remaining one system, a matching processing result is selected as a normal processing result, and a mismatching one system is notified to outside as failure information. Since the information processing apparatus can operate asynchronously, a dedicated triple information processing apparatus incorporating functions such as hardware triple synchronization is not required, and a commercially available information processing apparatus can be used. And a high reliability information processing system can be constructed simply by connecting to the majority device. Even if the processing capabilities and specifications of the three information devices are different, high reliability can be achieved simply by connecting to the majority device. The advantage is that the information processing system can be easily constructed. Also, even if the processing of a certain system is delayed due to a parity check or the like, as long as the processing result is output, the timing synchronization is not detected by the majority decision device, so it is not judged as abnormal, and a notification of an abnormality that is not a failure is notified. The effect of reduction can be obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a triple information processing system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing details of a majority decision device in FIG. 1;

FIG. 3 is a flowchart showing the operation of the majority decision device according to the present invention.

FIG. 4 is a flowchart following FIG. 3 showing the operation of the majority decision device according to the present invention.

FIG. 5 is a timing chart showing signals in respective parts of the block shown in FIG. 1;

FIG. 6 is a block diagram showing a conventional triple information processing system.

[Explanation of symbols]

 101, 102, 103 Information processing device 200 Majority decision device 220 Output data buffer unit 222 ID comparison unit 223 ID flag generation unit 230 Majority decision comparison / failure detection unit (majority decision means) 241 ID replacement / output arbitration unit 242 ID management table 300 Network 401 to 40n input / output device 411 other information processing device

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[Procedure amendment]

[Submission date] November 30, 1999 (1999.11.
30)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

1. A three-system system for executing processing in response to the same instruction.
Information processing devices and execute majority processing on the processing results of these information processing devices.
To a triple information processing system with a majority decision device
The majority instruction device is provided with the information for the same instruction.
Receives processing results output asynchronously from all of the processing units.
Until the installation, the information of the first or second system received earlier
Output data for buffering comparison results from the
Data buffer part and the processing result buffered for the same instruction
Receiving the processing results of two or more systems including
Compared based on majority logic, the processing results of the 2 system match
Selected as the normal processing result,
If the processing results of the second system do not match, the processing results of the second system
Majority comparison between each of the fruits and the processing result of the remaining one system
Go and select the matching processing result as normal processing result
And notify the outside of the mismatched system as failure information
And a command for the three-system information processing device is issued from another information processing device or an input / output device on a network connected to the three-system information processing device via the majority device. Information processing system.

2. A three-system system for executing processing in response to the same instruction.
Information processing devices and execute majority processing on the processing results of these information processing devices.
To a triple information processing system with a majority decision device
The majority instruction device is provided with the information for the same instruction.
Receives processing results output asynchronously from all of the processing units.
Until the installation, the information of the first or second system received earlier
Output data for buffering comparison results from the
Data buffer part and the processing result buffered for the same instruction
Receiving the processing results of two or more systems including
Compared based on majority logic, the processing results of the 2 system match
Selected as the normal processing result,
If the processing results of the second system do not match, the processing results of the second system
Majority comparison between each of the fruits and the processing result of the remaining one system
Go and select the matching processing result as normal processing result
And notify the outside of the mismatched system as failure information
And the majority device replaces the transaction ID added to the command received via the network with a unique ID for transaction management.
System information processing devices, while receiving the processing results from these information processing devices, converting the unique ID to the original transaction ID, and outputting the processing results to the network in a predetermined order. A triple information processing system, comprising: an ID change / output arbitration unit for arbitrating.

3. A three-system system for executing processing in response to the same instruction.
Information processing devices and execute majority processing on the processing results of these information processing devices.
To a triple information processing system with a majority decision device
The majority instruction device is provided with the information for the same instruction.
Receives processing results output asynchronously from all of the processing units.
Until the installation, the information of the first or second system received earlier
Output data for buffering comparison results from the
Data buffer part and the processing result buffered for the same instruction
Receiving the processing results of two or more systems including
Compared based on majority logic, the processing results of the 2 system match
Selected as the normal processing result,
If the processing results of the second system do not match, the processing results of the second system
Majority comparison between each of the fruits and the processing result of the remaining one system
Go and select the matching processing result as normal processing result
And notify the outside of the mismatched system as failure information
And when the output data buffer unit receives the processing results of the three systems for the same instruction at the same timing, passes the processing results to the majority decision means without buffering the processing results. And a triple information processing system.

4. A three-system system for executing processing in response to the same instruction.
Information processing devices and execute majority processing on the processing results of these information processing devices.
To a triple information processing system with a majority decision device
The majority instruction device is provided with the information for the same instruction.
Receives processing results output asynchronously from all of the processing units.
Until the installation, the information of the first or second system received earlier
Output data for buffering comparison results from the
Data buffer part and the processing result buffered for the same instruction
Receiving the processing results of two or more systems including
Compared based on majority logic, the processing results of the 2 system match
Selected as the normal processing result,
If the processing results of the second system do not match, the processing results of the second system
Majority comparison between each of the fruits and the processing result of the remaining one system
Go and select the matching processing result as normal processing result
And notify the outside of the mismatched system as failure information
And an output data buffer unit having an ID comparison unit that performs a majority comparison of IDs included in a header of a processing result received from a third-system information processing device.

Wherein said arbitration, when receiving a processing result for the two instructions simultaneously claims characterized in that it is performed in the instruction order of reception registered in ID management table that associates and the transaction ID and unique ID Item 3. The triple information processing system according to Item 2 .

6. An output data buffer unit according to claim 1 , wherein:
From the three sets of comparison results for each two systems from the comparison unit, a flag is generated in accordance with the case where the same instruction is simultaneously processed from the second system and the case where there is no processing result to be simultaneously received, and the above-mentioned flag is generated in the output data buffer. The triple information processing system according to claim 4 , further comprising an ID flag generation unit that registers each ID as a set address together with output data.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Deleted

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

[0006]

To achieve the above object,
Tripling information processing system according to a first aspect of the invention, the
Asynchronous output from all information processing units for one instruction
Until the processing result received is received,
Buffers the comparison results from the information processing device of the system or system 2
The output data buffer section to be ringed is provided in the majority decision device,
The majority decision means buffers the same instruction.
Receiving the processing results of two or more systems including the processing results
Compare the processing results of the two systems based on the majority logic.
The output of the system that matched the processing results of
Select, on the other hand, if the processing results of the two systems do not match
Is the processing result of each of the two systems and the processing of the remaining one system
Allows majority comparison with the result and returns the matching processing result as normal
Selected as a result of the processing
The information is notified to the outside, and an instruction to the information processing device of the third system is issued from another information processing device or an input / output device on the network connected to the information processing device via the majority device. .

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

Further, in the triple information processing system according to the second aspect of the present invention, all of the information processing apparatuses respond to the same instruction.
Until the processing result output asynchronously is received
From the 1st or 2nd information processing device
Output data buffer to buffer the comparison result
Provided in the majority decision device, the majority decision means,
Processing of two or more systems, including buffered processing results
Processing results of each system based on the majority logic.
And compare the outputs of the two systems where the processing results match.
Selected as a normal processing result, while
If the results do not match, each of the two system processing results
A majority comparison is performed with the processing result of the remaining 1
Selected as a normal processing result, and
The system of the match is notified to the outside as failure information, and the majority decision device replaces the transaction ID added to the command received via the network with a unique ID for transaction management, and outputs the information of the system 3 And transfers the unique ID to the original transaction ID and arbitrates to output the processing result to the network in a predetermined order. An ID change / output arbitration unit is provided.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

[0008] In the triple information processing system according to the third aspect of the present invention, all of the information processing apparatuses are provided for the same instruction.
Until the processing result output asynchronously is received
From the 1st or 2nd information processing device
Output data buffer to buffer the comparison result
Provided in the majority decision device, the majority decision means,
Processing of two or more systems, including buffered processing results
Processing results of each system based on the majority logic.
And compare the outputs of the two systems where the processing results match.
Selected as a normal processing result, while
If the results do not match, each of the two system processing results
A majority comparison is performed with the processing result of the remaining 1
Selected as a normal processing result, and
When the output data buffer unit receives the processing results of the three systems for the same instruction at the same timing, the output data buffer unit performs the buffering of these processing results without performing the buffering. It is to be passed to majority means.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

Further, in the triple information processing system according to the invention of claim 4 , all of the information processing apparatuses are provided for the same command.
Until the processing result output asynchronously is received
From the 1st or 2nd information processing device
Output data buffer to buffer the comparison result
Provided in the majority decision device, the majority decision means,
Processing of two or more systems, including buffered processing results
Processing results of each system based on the majority logic.
And compare the outputs of the two systems where the processing results match.
Selected as a normal processing result, while
If the results do not match, each of the two system processing results
A majority comparison is performed with the processing result of the remaining 1
Selected as a normal processing result, and
The output data buffer unit is provided with an ID comparison unit that makes a majority decision comparison of IDs included in the header of the processing result received from the information processing device of the third system , by notifying the first system of the match as failure information to the outside. .

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

Further, tripling the information processing system according to the invention of claim 5, the arbitration, when receiving the processing result for the two instructions simultaneously, the ID management table that associates and the transaction ID and unique ID This is performed in the order in which the registered instructions are received.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

Further, in the triple information processing system according to the invention of claim 6 , the output data buffer unit includes
From the three sets of two sets of comparison results from the D comparison unit, a flag is generated depending on whether the same instruction has received processing results from the two sets at the same time and no processing result has been received at the same time. An ID flag generator for registering each ID as a set address together with output data is provided.

Claims (7)

[Claims] 1. A triple information processing system comprising: a three-system information processing device that executes processing in response to the same instruction; and a majority device that performs majority processing on the processing results of these information processing devices. Until a processing result output asynchronously from all of the information processing apparatuses is received for the same instruction, the comparison result from the first or second information processing apparatus provided in the majority device is received. An output data buffer unit for buffering, and a processing result of two or more systems including a processing result buffered for the same instruction is received, and the processing results of each system are compared based on majority logic. The output of the system with the matching processing result is selected as the normal processing result. On the other hand, if the processing results of the two systems do not match, each of the processing results of the two systems and the remaining one system are selected. And a majority decision means for performing a majority comparison with the processing result, selecting a matching processing result as a normal processing result, and notifying a non-matching system to outside as failure information. Processing system. 2. The information processing apparatus according to claim 3, wherein the instruction to the third information processing apparatus is issued from another information processing apparatus or an input / output device on a network connected to the third information processing apparatus via the majority device. 3. The triple information processing system according to 1. 3. The majority voting device replaces a transaction ID attached to the command received via the network with a unique ID for transaction management and transfers the transaction ID to the information processing device of the third system. An ID reassignment / output arbitration unit that receives the processing results from these information processing devices, converts the unique ID into the original transaction ID, and arbitrates the processing results to the network in a predetermined order. The triple information processing system according to claim 1, wherein: 4. When the output data buffer unit receives the processing results of the three systems for the same instruction at the same timing, the output data buffer unit passes the processing results to the majority decision means without buffering the processing results. Claim 1
3. The triple information processing system according to item 1. 5. An ID included in a header of a processing result received from an information processing device of a third system, wherein the output data buffer unit
3. The triple information processing system according to claim 1, further comprising: an ID comparison unit that performs majority comparison of the data. 6. The arbitration is performed in the order of receiving instructions registered in an ID management table that associates the transaction ID with a unique ID when the processing results for two instructions are received at the same time. Item 3. A triple information processing system according to Item 3. 7. The output data buffer unit according to claim 1, wherein:
From the three sets of comparison results for each two systems from the comparison unit, a flag is generated in accordance with the case where the same instruction is simultaneously processed from the second system and the case where there is no processing result to be simultaneously received, and the above-mentioned flag is generated in the output data buffer. The triple information processing system according to claim 5, further comprising an ID flag generation unit that registers each ID as a set address together with output data.