JPH04223543A - Information processing system - Google Patents

Abstract

PURPOSE:To prevent the dialogue processing from being carried out through being connected to the terminal unit other than that for which the preceding interrupted dialogue processing was carried out, when a switched line that was disconnected due to some reason is recovered to restart a dialogue processing. CONSTITUTION:In an information processing system where an information processing unit 11 is connected with a plurality of terminal units 12 and 12 via switched lines 13, when a dialogue processing starts after the disconnected switched line is recovered, a terminal operator uses his specifically occupied character string to select a terminal unit 12 to which the recovered switched line is to be connected to protect the switched line from being connected to an unexpected terminal unit.

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 in which an information processing device and a terminal device are connected through a switched line.

The present invention is utilized for terminal occupancy control during reconnection after switching line disconnection.

0003

2. Description of the Related Art Conventionally, in order to identify a specific terminal device among terminal devices connected via a switched line and perform dialogue processing,
A method has been used in which a station identifier is set in advance for each terminal device in an information processing device.

[0004] When a certain terminal device connects to an interactive program and performs interactive processing, the information processing device first transmits a station identifier from the terminal device in order to identify the terminal device, and if the station identifier matches a preset station identifier, the information processing device identifies the terminal device. An interactive program was connected to a terminal device when

[0005]

[Problems to be Solved by the Invention] In the conventional terminal occupation method described above, if the line is disconnected while a certain terminal device is performing interactive processing with an interactive program, the line is reconnected from the terminal device. It is possible to connect the line from another terminal device before disconnecting the line, and as a result, the terminal operator who was conducting dialogue processing before the line was disconnected will not be able to continue the dialogue processing (reconnecting the terminal device), and, There is a problem in that another terminal operator who connects after the line is disconnected may continue unexpected dialogue processing.

[0006] The present invention solves these problems and aims to provide a system that can prevent interactive processing due to unexpected connections after the line is disconnected.

[0007]

[Means for Solving the Problems] The present invention provides an interactive type in which an information processing device and a plurality of terminal devices are connected via a switching line, and the information processing device performs interactive processing with the plurality of terminal devices. An information processing system comprising an interactive program means for executing a program, and a communication control means for controlling transmission and reception of messages between the interactive program means and the plurality of terminal devices, wherein the plurality of terminal devices are occupied by the plurality of terminal devices. A terminal management table is provided to record whether the terminal is in the occupied state or not, and an occupied character string indicating the occupied state when the terminal is in the occupied state.
The present invention is characterized by comprising terminal selection means for selecting which terminal device to connect to among the plurality of terminal devices according to the contents of the terminal management table and notifying the communication control means of the selected terminal device.

[0008]

[Operation] When a terminal operator sends an occupied character string along with a terminal occupancy command in order to perform interactive processing with an information processing device, the "occupied status" on the terminal management table is in the released state, and the "occupied character string" is unused. If it is in the setting state, an occupied character string is set and the information processing device is occupied and interactive processing is performed. If the line is disconnected for some reason during this dialog process, the terminal management table is changed to a released state, but the occupied character string remains as is. Therefore, even if terminal occupancy commands and occupancy character strings are sent from other terminal devices when the disconnection of the line is recovered, the connection is not established because the occupancy character strings are different, and the terminal device that was performing the interactive process becomes the terminal again. By transmitting an occupancy command and an occupancy character string, the occupancy state is set and the dialog processing continues.

[0009] Thereby, it is possible to prevent an unexpected connection from being made with another terminal device at the time of recovery from disconnection of the switched line.

0010

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

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, FIG. 2 is a diagram showing the structure of a terminal management table for managing the status of a terminal in the embodiment of the present invention, and FIG. 3 is a diagram showing terminal selection in the embodiment of the present invention. A flowchart showing the flow of operations when the means receives a message from a terminal device, and FIG. 4 is a flowchart showing the operation when the communication control means in the embodiment of the present invention detects that the connection between the information processing device and the terminal device is disconnected. 2 is a flowchart showing the flow.

In the embodiment of the present invention, an information processing device 11 and a plurality of terminal devices 12 are connected via a switching line 13, and an interactive program is provided to the information processing device 11 to perform interactive processing with the plurality of terminal devices 12. The present invention has an interactive program means 111 that executes the above, and a communication control means 113 that controls the transmission and reception of messages between the interactive program means 111 and the plurality of terminal devices 12. Whether or not the terminal device 12 is in an occupied state;
A terminal management table 114 is provided in which an occupied character string indicating occupancy is entered when the terminal is in an occupied state, and it is determined which terminal device 12 to connect to among the plurality of terminal devices 12 according to the contents of this terminal management table 114. A terminal selection means 112 is provided for selecting and notifying the communication control means 113.

The terminal management table 114 is composed of an occupancy state 21 and an occupancy character string 22, as shown in FIG.

The interactive program means 111 performs interactive processing with the terminal device 12 via the terminal selection means 112, the communication control means 113, and the exchange line 13.

The terminal selection means 112 refers to the terminal management table 114 based on the message received from the communication control means 113 as shown in FIG. If it is other than the terminal occupancy command determined by the interactive program means 111, the message is rejected by notifying the terminal device 12 that the terminal device 12 is not occupied.

Furthermore, if the occupancy state 21 is "released state" and the received message is a terminal occupancy command, the occupancy character string is The received occupancy character string is set in 22, and the occupancy state 21 is changed to "occupied state".

When the occupied character string 22 is set, if the set occupied character string and the received occupied character string are the same, the occupied state 21 is changed to "occupied state". If the occupied character string has already been set and the set occupied character string is different from the received occupied character string, a message is sent to the terminal device 12 to the effect that the terminal device 12 is occupied by a different occupied character string. to reject the message.

If the occupancy state 21 is "occupied state" and the received message is a terminal release command determined by the interactive program means 111, the occupancy state 21 is changed to "released state", and the occupancy character string 22 is changed to " Set to "unset state".

If the occupied state 21 is "occupied state" and the received message is other than a terminal release command, the received message is passed to the interactive program means 111.

According to the content of the message received from the terminal device 12 via the switched line 13, the communication control means 113 executes the terminal occupancy command defined by the interactive program means 111 when the occupancy state 21 is in the "released state". It accepts only the message, sets the occupancy status 21 to ``occupied status'', and passes the received message to the terminal selection means 112.

When the occupation state 21 is "occupied state", the received message is passed to the interactive program means 111. Further, messages sent from the interactive program means 111 are sent to the terminal device 12 via the exchange line 13.

When it is detected that the information processing device 11 and the terminal device 12 are disconnected, the occupancy state 21 of the terminal management table 114 is changed to "released state" as shown in FIG.

The terminal management table 114 is as shown in FIG.
Terminal device 12 used by interactive program means 111
An occupancy state 21 and an occupancy character string 22 are stored corresponding to the occupancy state 21 and the occupancy character string 22. Interactive program means 111 Occupied state 2 at startup
1 is in the "released state", and the occupied character string 22 is in the "unset state".

FIG. 5 is a diagram showing the operation of the information processing apparatus when performing interactive processing.

First, after starting up the interactive program means 111, the terminal operator issues a terminal occupancy command (LO
GON) and the occupied character string (XXXX) 22 is transmitted. A terminal occupancy command (L
The terminal selection means 112 that received the OGON) updates the terminal management table 114.

If the exchange line 13 is disconnected for some reason during the dialog processing, the communication control means 1
13 changes the occupancy state 21 of the terminal management table 114 to "released state".

After that, in order for the terminal operator to continue the dialog processing, it is necessary to connect the exchange line 13 from the terminal device 12 and send the terminal occupancy command (LOGON) again. At this time, a terminal occupancy command (LOGON) with the same occupancy character string (XXXX) as when the terminal device 12 was occupied immediately before is issued.
), it is not possible to connect the interactive program means 111 and the terminal device 12.

[0028] When terminating the dialog processing, the terminal device 12
A terminal release command (LOGOFF) is sent from the terminal. Thereafter, the interactive program means 111 receives the exclusive character string (YYYY) from any of the terminal devices 12 connected via the exchange line 13.
A connection can be made by a terminal occupancy command (LOGON) accompanied by a terminal occupancy command (LOGON).

[0029]

As explained above, according to the present invention, when performing interactive processing with an interactive program from a terminal device connected via a switched line, even if the switched line is disconnected for some reason, the interactive processing can be continued. By making it impossible for anyone other than the terminal operator who knows the exclusive character string sent from the terminal device at the time of start to continue the dialog processing, unexpected dialog processing with another terminal operator may continue. This has the effect of preventing this.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a diagram showing the structure of a terminal management table for managing the status of terminal devices in the embodiment of the present invention.

FIG. 3 is a flowchart showing the flow of operations when the terminal selection means receives a message from a terminal device in the embodiment of the present invention.

FIG. 4 is a flowchart showing the flow of operations when the communication control means detects disconnection between the information processing device and the terminal device in the embodiment of the present invention.

FIG. 5 is a flowchart showing the operation of the information processing device when performing interactive processing in the embodiment of the present invention.

[Explanation of symbols]

11 Information processing equipment 12 Terminal device 13　　　　　Exchange line 21 Occupancy status 22 Occupied character string 111 Interactive program means 112 Terminal selection means 113 Communication control means 114 Terminal management table

Claims (1)

[Claims] 1. An information processing device and a plurality of terminal devices are connected via a switched line, and an interactive program means is configured to cause the information processing device to execute an interactive program for performing interactive processing with the plurality of terminal devices. and communication control means for controlling transmission and reception of messages between the interactive program means and the plurality of terminal devices, in which the plurality of terminal devices are in an occupied state;
A terminal management table is provided in which an occupied character string indicating occupancy is entered when the terminal is in an occupied state, and one of the plurality of terminal devices to be connected to is selected according to the contents of this terminal management table. An information processing system comprising: terminal selection means for notifying the communication control means.