JPH0833841B2 - Data duplication processing system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a system in which a plurality of processing devices are connected to a bus, and processing from any processing device, such as an active system and a standby system. The present invention relates to a data duplication processing system suitable for transferring data to a pair of processing devices that duplicate and process data, such as an apparatus.

[Conventional technology]

2. Description of the Related Art Conventionally, there are some information processing systems and the like that employ a technique of installing two processing devices of the same kind and duplicating data for processing. FIG. 3 is a diagram showing an example of the configuration of a system in which a plurality of function-dispersed processing devices are connected by a bus. Here, 100 is a bus, 300 and 310 are a pair of processing devices that duplicate and process data, and 200 is in a relationship of transmitting data to a pair of processing devices that duplicate and process data. It is a transmission processing device.

In a system having such a configuration, when a pair of processing devices that duplicate and process data are used as active and standby processing devices, the transmission processing device 200 duplicates and processes the data. When transmitting data to the pair of processing devices 300 and 310, the transmission processing device 200 manages which of the processing devices 300 and 310 is the active system, and sends the data to the processing device that is the active system. Processor 300
In the active system, the data received from the transmission processing device 200 is transmitted to the processing device 310, which is the standby system of the processing device 300, to duplicate the data.

[Problems to be solved by the invention]

However, in the above conventional technique, the transmission processing device 200
In addition, a pair of processing devices 300 and 3 for processing the data in duplicate.
It is necessary to have a means for managing which one of 10 is the active system device and controlling the destination of the data,
It is necessary to have a function of transmitting and receiving the device status of a pair of processing devices that perform redundant processing to and from a transmission processing device, and one of a pair of processing devices that performs dual processing to manage the status of the other processing device. It was necessary and there was a problem that processing became complicated.

An object of the present invention is to solve such a conventional problem, and to simplify a processing device which transmits data to a pair of processing devices which duplicate and process data in a system in which a plurality of processing devices are connected to a bus. Data transfer control is possible, duplication of data between a pair of devices that duplicates and processes data is easy, and duplication with high reliability against failure of the pair of devices is possible. It is to provide a data duplication processing system.

[Means for solving problems]

In order to achieve the above object, a data duplication processing system of the present invention comprises (a) a plurality of processing devices including a pair of processing devices for duplicating and processing data, and data transfer between the processing devices. In this system, each of the pair of processing devices fetches and processes the data transmitted by the individual address signal unique to the processing device itself, and
A means for taking in and processing data sent by a common address signal common to the own processing device and the paired processing device, and converting the representative address signal into an individual address signal unique to the paired processing device, It has at least means for transmitting to the pair of processing devices together with the data sent by the representative address signal, and always takes in and processes the data sent by the representative address signal by both of the paired processing devices. It is characterized by

[Action]

In the present invention, when the individual address signal is received, the data received in the own processing device is processed, and when the representative address signal is received, the data received in the own processing device is processed and the data is processed. The data is transmitted to the other processing device by an individual address signal unique to the other processing device, thereby duplicating the data between the pair of processing devices that processes the data in a duplicated manner. As a result, the transmission processing device that transmits data to the pair of processing devices that duplicates and processes the data only needs to be provided with the function of transmitting the data using the representative address signal. State management of a pair of processing devices for duplicating and processing the data required for processing and destination control of the data, and device status of a pair of processing devices for duplicating and processing the data with the transmission processing device. The function to send and receive is unnecessary.

〔Example〕

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

The overall configuration of this embodiment is the same as the system configuration of FIG. 3, so detailed description will be omitted. In particular, in this embodiment, since the configuration of the pair of processing devices 300 and 310 is characteristic,
The detailed configuration will be described later with reference to FIG.

FIG. 1 is a detailed configuration diagram of a processing device showing an embodiment of the present invention, and is a pair of processing devices for duplicating and processing data.
It shows a configuration example of 300 or 310. FIG. 2 shows a configuration example of an individual address signal ((a) in the figure) and a representative address signal ((b) in the figure) used in this embodiment. Both signals are used to identify the address type. It consists of bits, a device type code and a data part, and also has a device number code in the individual address signal. In the following, an example will be described in which a pair of processing devices that duplex data and process the data are used as processing devices that configure an active system and a standby system.

In FIG. 1, 301 is a processing unit, 320 is a signal receiving unit, and 302 is an individual address having a device number code of the other processing unit of a pair of processing devices for processing the signal from the signal receiving unit 320 by duplicating the data. Reference numeral 303 denotes an address conversion unit that replaces a signal, and reference numeral 303 denotes a signal transmission unit that transmits signals from the processing unit 301, the address conversion unit 302, and the signal reception unit 320 to the bus 100.

Further, the signal receiving unit 320 has a device type detection circuit 321, an address type detection circuit 322, and a device number detection circuit 323. The device type detection circuit 321 receives the signal from the bus 100, compares the device type codes, and if they match, transfers them to the address type detection circuit 322, and if they do not match, the signal transmission unit 3
Transfer the signal to 03. The address type detection circuit 322 detects the address type identification bit of the signal from the device type detection circuit 321, transfers the received signal to the device number detection circuit 323 if it is an individual address signal, and the processing section if it is a representative address signal. The received signal is transferred to 301 and the address conversion unit 302. The device number detection circuit 323 is the address type detection circuit 3
The device number code of the signal from 22 is detected, and if it matches the own device number, it is transferred to the processing unit 301, and if it does not match, the signal transmission unit 303
Transfer to

With such a configuration, a signal that does not match the device type code or an individual address signal that does not match the device number code is sent to the bus 100 via the signal transmitting unit 303. When an individual address signal in which the device type code and the device number code match is received, the address type detection circuit 32
Due to the operation of 2 and the device number detection circuit 323, the received signal is transferred only to the processing unit 301 and is not transmitted to the bus 100.

Next, the operation when a representative address signal having the same device type code is received will be described. The signal received from the bus 100 is transferred to the address type detection circuit 322 by the operation of the device type detection circuit 321. In the address type detection circuit 322, since the received signal is the representative address, the received signal is transferred to the processing unit 301 and also to the address conversion unit 302. This signal is replaced by an address conversion unit 302 with an individual address signal having the other device number code of a pair of processing devices that processes data in a duplicated manner, and is sent to the bus 100 via the signal transmission unit 303. To be done.

Since it operates in this way, the processing device (eg, 300) that has received the representative address signal whose device type code matches
Can receive the data transferred thereby and transfer the data to the other processing device (for example, 310) with an individual address signal unique to the other processing device. Since the other processing device (for example, 310) receives the data by the individual address signal peculiar to the own device, both the processing devices 30 of the pair of processing devices that duplicate the data and process the data.
Data can be received by both 0 and 310, and the data can be duplicated. Further, even if the processing unit of the processing device fails, the present configuration ensures the reliability because the data is transferred to the other processing device by the individual address signal unique to the other processing device. .

〔The invention's effect〕

As described above, according to the present invention, a processing device that transfers data to a pair of processing devices that doubles and processes data uses a representative address signal to perform a pair of data that doubles and processes data. The data can be transmitted without being aware of whether the processing device is normal or abnormal, and one does not need to manage the state of the other, and transfer control can be simplified. Further, the data received by the representative address signal between the pair of processing devices that duplicate and process the data is transferred to the other processing device of the pair of processing devices that duplicates and processes the data by the converted individual address signal. Therefore, it is possible to duplicate data with high reliability.

[Brief description of drawings]

FIG. 1 is a block diagram of a processing device for duplexing and processing data showing an embodiment of the present invention, and FIG. 2 is a view showing a configuration example of an individual address signal and a representative address signal used in the present invention, FIG. 3 is a diagram showing an example of the configuration of a system in which a plurality of processing devices having distributed functions are connected by a bus. 100: Bus, 200: Transmission processing device, 300, 310: Processing device for duplicating and processing data, 301: Processing unit, 302: Address conversion unit, 303: Signal transmission unit, 321: Device type detection circuit, 322: Address Type detection circuit, 323: Device number detection circuit.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hisashi Kawanishi, 2356 Take, 1-chome, Yokosuka City, Kanagawa, Japan Information and Communication Processing Laboratory, Nippon Telegraph and Telephone Corporation (56) Reference JP-A-50-50835 (JP, A)

Claims (1)

[Claims] 1. A system comprising a plurality of processing devices including a pair of processing devices for duplicating and processing data, and performing data transfer between the processing devices, wherein each of the pair of processing devices comprises: A means for fetching and processing the data sent by the individual address signal peculiar to the self-processing device, and fetching and processing the data sent by the common address signal common to the self-processing device and the paired processing devices; , At least means for converting the representative address signal into an individual address signal unique to the pair of processing devices, and transmitting the individual address signal to the pair of processing devices together with the data sent by the representative address signal. However, the data 2 is characterized in that the data transmitted by the representative address signal is always taken in and processed by both of the paired processing devices.
Duplication processing system.