JPS61269757A - Information processing network system - Google Patents

Abstract

PURPOSE:To execute the same action by the device at the transmitting side when the abnormal device at the receiving side is normal and to improve the reliability by providing an information receiving replacing device at the network system and replacing the receiving function at the time of generating the abnormality. CONSTITUTION:When the response of receiving is not executed from a device 13d side while transmission is executed from an information processing device 13a to 13d, the device 13a judges that the abnormality is generated at the device 13d, and sends the information to change over and transmit the address to an information receiving replacing device 14. Thus, the device 14 stores and accumulates the information sent. Next, when the trouble is recovered the device 13d transmits the control information, to the device 14, that the action is started normally. The device 14 to receive the control information transmits the information for the device 13d accumulated during the trouble to the device 13d. Thus, by providing the device 14, the device 13a at the transmitting side executes the same action when the abnormal device 13d at the receiving side is normal, and the reliability of the system can be improved.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to an information processing network system that performs information communication between a plurality of information processing devices, and in particular, the present invention relates to an information processing network system that performs information communication between a plurality of information processing devices, and in particular, when one information processing device communicates with other information processing devices. The present invention relates to a network system having a temporary information storage function suitable for when an abnormality occurs in an information processing system that collects information.

[Background of the invention]

Conventional information processing network systems only have the function of communicating information between information processing devices, and various measures have been taken to improve the reliability of this information communication function, such as multiplexing transmission paths. (Japanese Unexamined Patent Publication No. 56-6882)
6), if an abnormality occurs in the information processing device connected to the network system, even if there is no abnormality in the communication function of the network system itself,
There is a drawback that other information processing apparatuses that communicate with the abnormal information processing apparatus become unable to operate.

[Purpose of the invention]

An object of the present invention is to enable the network system to replace the information receiving function among the functions of the information processing apparatus when an abnormality occurs in the information processing apparatus connected to the network system. The object of the present invention is to provide a highly reliable information processing network system in which a transmitting side information processing apparatus can perform the same operation as a normal receiving side information processing apparatus when the abnormality occurs.

[Summary of the invention]

In an information processing system in which a plurality of information processing apparatuses are connected through a network system, mutual communication is possible between the information processing apparatuses that are constituent elements.

Among the connected information processing devices, there are many so-called information collection type systems in which some information processing devices take the central role, receiving information sent from other information processing devices and processing that information. . In this type of system, if the information processing device that receives information becomes abnormal, all the devices that send the information become inoperable. However, even in such cases, it would be possible to replace only the information processing function of the information processing device, which is responsible for receiving information, with a network system that normally performs communication. There is no problem with the operation of the information processing devices on the transmitting side, which account for the majority of the data.

A feature of the present invention is that a network system is provided with an information receiving alternative device.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

FIG. 1 shows an information processing network system according to the present invention, where 11 is a coaxial cable as a transmission medium, and 12a is a coaxial cable as a transmission medium.
12d is a transmission control device that connects the information processing devices 13a to 13d via the coaxial cable 11, and 14 is an information receiving alternative device.

FIG. 2 shows a specific configuration of each transmission control device 12. As shown in FIG. In the figure, 111 and 122 are a receiving section and a transmitting section, 123 is an abnormality detection section, 124 is a carrier detection section, and 1
25 is a collision detection section, 126 is a serial/parallel converter, 127 is a central control section, 128 is a storage section, and 129 is a user equipment interface section. The terminal a is connected to the coaxial cable 11, and the terminals are connected to each of the information processing devices 13a to 13d. The transmission control devices 12a to 12d and information processing devices 13a to 13d are known.

FIG. 3 shows the information receiving alternative device 14.

This is composed of a transmission control section 141 having the same configuration as the transmission control device shown in FIG. 2, a storage section 142, and a control section 143 of both sections 141 and 142.

The information processing device 13d shown in FIG. 1 plays a central role, and other information processing devices! As an information gathering type network system that receives and processes information transmitted from 13a to 13c, the operation will now be described using an example of communication between information processing bags 13a and 13d.

First, the carrier detection unit 124 of the transmission control device @ 12a
Then, it is confirmed that the information processing device 13d and other information processing bags [13b, 13c] are not communicating via the receiving unit 121. Thereafter, the information received from the information processing device 13a via the user equipment interface section 109 is serialized by the serial/parallel converter 126, and then sent from the transmitting section 102 to the information processing device 13d via the coaxial cable 11.

Since an address is attached to the information, the information is not received by the information processing devices 13b, 13c and the information receiving alternative device 14. In addition, two information processing devices 13a, 1
This is because there is a situation where information is sent from the information processing device 13d to the information processing device 13d almost simultaneously.

During information transmission, the information being communicated is received by the receiving unit 121 and compared with the received information, and the information processing devices 13b, 1
The collision detection unit 125 detects whether or not there is communication between the information processing devices 13a and 3a, and when receiving the information that confirms that communication is occurring only between the information processing devices 13a and 13ci, the reception unit 121 The information that comes in from the ! 13 Send to a. These series of processes are performed by a program stored in the storage unit 128 based on instructions from the central processing unit 127.

Now, if there is no reception response from the information processing device 13d, the abnormality detection unit 123 of the transmission control device 12a
However, since the information processing device 13d is not received, it is determined that an abnormality has occurred in the information processing device 13d, and the information to be transmitted is sent to the information receiving alternative device 14 by switching the address. In the information receiving alternative device 14, the information sent is stored and accumulated in a storage section 142 that includes a nonvolatile semiconductor storage element or a magnetic storage element.

Information sent from the information processing devices 13b and 13c to the information processing device 13d is also accumulated in the information receiving alternative device 14 through the same processing as described above.

When the information processing device 113d starts operating or the abnormality is recovered, it transmits control information indicating that it has started operating normally to the information receiving alternative device 14. The information receiving alternative device M14 that has received this control information is
The information addressed to d is transferred to the information processing device 13d. This makes it an information processing bag! i! Information generated while the information processing device 1113d is not in operation can also be normally processed by the information processing device 1113d.

In the above embodiment, an example in which one information reception alternative device 14 is installed has been described, but a plurality of information reception alternative devices may be installed in case the information reception alternative device itself breaks down.

Furthermore, the present invention is applicable not only when only one information processing device collects information, but also when a plurality of information processing devices collect information.

〔Effect of the invention〕

According to the present invention, as described above, it is possible to easily construct a highly reliable information processing network system. Further, information processing devices connected to a network system are often temporarily stopped for periodic maintenance, etc. even when no abnormality occurs, and the network system of the present invention can also be used in such cases. According to this, there is an effect that other information processing devices can operate.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an information processing network system showing an embodiment of the present invention, FIG. 2 is a block diagram of a transmission control device used in the present invention, and FIG. 3 is a block diagram of an information processing network system used in the present invention. FIG. 2 is a block diagram of a receiving alternative device.

Claims (1)

[Claims] 1. In an information processing network system in which a plurality of information processing devices are connected by a transmission medium through a transmission control device, an information receiving substitute device for the information processing device that has experienced an abnormality is provided on the transmission medium, and an abnormality is detected in a certain information processing device. When this occurs, information processing continues between the other normal information processing device and the above information receiving alternative device, and when the abnormality is restored, the information processed during the abnormality is transferred from the information receiving alternative device to the recovered information processing device. An information processing network system in which information is transferred to a device and then processed between each information processing device.