JPH06119266A - Information processing system connection control method - Google Patents

Abstract

(57) [Abstract] [Purpose] In an information processing system in which one information processing device is attached to each information source, the information processing device may forget or cannot release the information source. Even if the source of information is released automatically. [Configuration] A connection control device 10 is connected between information sources S _{1 to} S _n and workstations (information processing devices) W _{1 to} W _m . In the device 10, the processor 11 controls the attach connection for each information source, and the connection management table 12 stores the connection status for each information source. The processor 11 sends a message requesting a response for each workstation, and releases the attach connection for the workstations that do not respond, and the connection management table 1
Update the contents of 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information processing system such as a trading system that collects and outputs digitized information from a plurality of information sources in a securities market or the like, and particularly a workstation or the like for each information source. The present invention relates to a connection control method for controlling the attach connection of the information processing device.

[0002]

2. Description of the Related Art Conventionally, as trading systems used in securities companies and the like, there are known trading systems capable of connecting a plurality of workstations to a plurality of information sources. Two known methods for accessing the information source are view connection and attach connection.

The view connection connects an information source and a workstation with only a video signal, and a plurality of workstations can be simultaneously connected to one information source. The attach connection connects the information source and the workstation with a video signal and a keyboard signal, and only one workstation can be connected to one information source. In other words, when one workstation is connected to one information source, the information source is in a state of being exclusively used by that workstation, and another workstation cannot be connected.

[0004]

In the above-mentioned attach-connection type trading system, a power source is turned off without performing a release operation of the information source in a state where a workstation is attached and connected to an information source. , I had to finish the work. In such a case, although the information source is not used, another workstation cannot be attached and connected, and an expensive information source is played.

An object of the present invention is to provide a novel information source that automatically releases the information source even if the information processing apparatus forgets to release the information source or cannot complete the release operation due to a hardware failure or the like. It is to provide a connection control method.

[0006]

According to the present invention, a connection control device is connected between a plurality of information sources and a plurality of information processing devices, and in the connection control device, one information is provided for each information source by a processor. In the information processing system configured to control the attach connection of the processing device, the processor transmits information requesting a response for each information processing device, and disconnects the attach connection for the information processing device that does not respond. It is what

[0007]

According to the connection control method of the present invention, the information requesting a response is transmitted for each information source, and the attach connection is released for the information processing device which does not respond.
Even if there is an information processing device that forgets or cannot complete the release operation of the information source, the attached connection is automatically released, and another information processing device can be attached to the information source.

[0008]

1 shows a trading system according to an embodiment of the present invention. The connection control device 10
Processor (central processing unit) 11, connection management table 1
2 and the like, including a plurality n of information sources S _{1 to} S _n ,
It is connected between a plurality of m workstations W _{1 to} W _m . The connection is a LAN (Local Area Ne) having an active system A and a standby system B as shown in FIGS.
network). As an example, the connection management table 12 is composed of a random access memory,
Each workstation consists of a small computer with a keyboard, display, etc.

The processor 11 controls the attach connection of one workstation for each information source, and stores the connection status of each information source in the connection management table 12. The connection status is stored in the information source S, for example.
_{When the} workstation W ₁ is attached to ₁ for connection, the information indicating the connection of W ₁ is stored in the storage area corresponding to S _1, and the information source without the attachment connection is not connected to the corresponding storage area ( Or information indicating that connection is possible) is stored. Therefore, by referring to the connection management table 12, it is possible to know which workstation is connected to which information source or which information source can be used.

When the power of the workstation is turned off, it is a principle that the workstation releases the information source (logoff operation). However,
Some users immediately turn off the power and end the work without a logoff operation. In the present invention, in order to cope with such a situation, the processor 11 is connected to the LAN.
A message is sent periodically to each workstation for a response via, and a workstation patrol that monitors the response is performed. Then, for workstations that do not respond, the attach connection is forcibly released (logoff).

FIG. 2 shows a transmitting / receiving operation in the workstation patrol. Processor 11
Sends the message M _S seeking a response to the workstation W through the LAN of the active system A, a response message M _R elapsed again from message to If is sent a predetermined time T ₁ (e.g., 60 seconds) M _S The operation of sending and receiving the message M _R is repeated. This is the operation when the workstation is normally used, and in this case, the patrol OK is not performed and the logoff is not performed.

On the other hand, FIG. 3 shows an example in the case of performing logoff. That is, the processor 11 attempts to transmit the message M _{S to} the workstation W through the active system A of the LAN, and if transmission is impossible, switches to the standby system B of the LAN and attempts to retransmit M _S to W. Then, if transmission is still impossible, a predetermined time T ₂ (for example, 45 seconds)
After a lapse of time, the active system A again attempts to transmit M _S to W, and if the transmission is impossible, the standby system B attempts to retransmit M _S to W. Then, if the transmission is still impossible, the workstation W is logged off. That is, referring to the connection management table 12, the attached connection between W and the information source is released, and the contents of the table 12 are updated to enable the use of the information source. If any message is received while trying to send, patrol O
Do not log off as K.

FIG. 4 shows another example of logoff. That is, the processor 11 attempts to transmit the message M _{S to} the workstation W through the active system A of the LAN, and if the transmission is possible, the processor 11 waits for a response in the system for a predetermined time T ₃ (for example, 30 seconds). Then, if there is no response within the time of T ₃ , it is switched to the backup system B of the LAN and M _S
To retransmit to W. If it is impossible to send at this time,
After a lapse of a predetermined time T ₂ (for example, 45 seconds), the active system A again tries to transmit M _S to W. If it is possible to transmit at this time, it waits for a response during the time T ₃ , and if there is no response within the time T ₃ , it switches to the standby system B and tries to retransmit M _S to W. If transmission is not possible at this time, the workstation W is logged off in the same manner as described with reference to FIG. If any message is received while the transmission is being attempted, the patrol is OK and the logoff is not performed.

[0014]

As described above, according to the present invention, a certain information processing device forgets to release the information source,
Even if you can not do it, since the attach connection is automatically released and the attach connection of other information processing devices is possible,
It can be used effectively without playing expensive information sources.

[Brief description of drawings]

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

FIG. 2 is an explanatory diagram of a transmission / reception operation in a workstation patrol.

FIG. 3 is an explanatory diagram of a re-transmission operation when transmission is impossible in a workstation patrol.

FIG. 4 is an explanatory diagram of a retransmission operation when transmission is possible in the workstation patrol.

[Explanation of symbols]

10 connect the controller 11 processor 12 connection management table S ₁ to S _n information source W ₁ to _W-m, spare system W workstation A LAN active system B LAN

Claims (1)

[Claims] 1. A connection control device is connected between a plurality of information sources and a plurality of information processing devices, and in the connection control device, a processor controls an attach connection of one information processing device for each information source. In the above information processing system, the processor transmits information for requesting a response for each information processing apparatus, and disconnects the attach connection for the information processing apparatus which does not respond.