JPS63211846A - Terminal control system - Google Patents

Abstract

PURPOSE:To prevent missing or duplication of data by providing a means detecting the reception disabled state of a terminal equipment and storing the state to a terminal controller and checking the status in case of rising of the terminal equipment when the terminal equipment is in the reception disabled state during data transmission from a center to the terminal control equipment. CONSTITUTION:A message sent from the center 1 unidirectionally to the terminal controller 2 is outputted to a terminal equipment 3 via the terminal controller 2. If a message cannot be received for the terminal equipment 3 due to any cause, the terminal controller 2 stores the message and stores its state. Then after the terminal equipment 3 rises, the unidirectional transmission message from the center 1 and stored in the terminal controller 2 is outputted to the terminal equipment 3, a notice message to the operator of the terminal equipment 3 is outputted to surely allow the operator to check miss/duplication of the unidirectionally sent message caused at the occurrence of the terminal equipment or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a center system and an online terminal system, and particularly relates to an improvement in a method for transmitting messages from a center when online.

[Conventional technology]

Conventionally, a method for preventing data loss during data transmission/reception between systems at 4G has been a method of checking using a serial number, etc., as described in Japanese Patent Application Laid-Open No. 60-255244.

However, for operators such as terminal equipment. No consideration was given to t-peration.

[Zhao point that the invention is trying to solve]

The above conventional technology responds to messages sent from the center.
Measures such as adding a serial number, storing the serial number in the terminal device, and dumping it to a dump file at fixed time intervals have been taken, but consideration has not been given to devices where the terminal device performs sequential processing such as printers. There wasn't.

An object of the present invention is to provide a means for preventing data omission and duplication when a condition such as a paper change or a failure occurs in a printer where the terminal device performs sequential processing, and to notify the operator of this condition. It's about doing.

[Means for solving problems]

The above purpose is to detect the state of the terminal device in the terminal control device and store the state when the terminal device becomes unreceivable while data is being transmitted from the center to the terminal control device. This is accomplished by checking the status when the terminal device boots up.

[Effect]

Messages unilaterally transmitted from the center to the terminal control device are output to the terminal device via the terminal control device. At this time, if the message is not received by the terminal device for some reason, the message is stored in the terminal side 04+ device and its status is maintained. After that, after the terminal device starts up, it outputs the one-way transmission message from the center stored in the terminal control device to the terminal device, and also sends a caution message to the operator of the terminal device. By outputting the information, the operator can reliably check for omissions or duplications of one-sided messages sent from the center that occur when a terminal device failure occurs.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of the configuration of an online system according to the present invention, which includes a center, a terminal control device (hereinafter abbreviated as TcE), and a terminal device (hereinafter abbreviated as DV).

Figure 2 is a time chart showing message exchange in the online system with this configuration, Figures 3 and 4.
The figure shows a TOE processing flowchart, and FIG. 5 shows a DV state storage area for TCE processing.

Next, means for specifically realizing the present invention will be explained using FIGS. 2 to 5.

When a message to be output to DV3 is generated, the center 1 unilaterally sends an output message 10 to T(J2) at that point. When TCE2 receives this message (21), TCE2 sends T( It is output to the DV3 as the J-force output message 11 (22).

At this time, check whether the output could not be performed normally to DV3, 3
.

23) If the output cannot be performed normally, set the DV output pending state in the DV state storage area 41.25
), the center one-way output message 10 is stored in the center transmission message holding area 42 (26).

Next, the fault in DV3 is recovered, and DV startup message 15 is input from DV3.
Check the status of the status storage area 41 (32), DV
If the output is on hold, the pending center transmission message 11 and operator caution message 16 are output to the DV3 (33) (34). After this, 'I'CB2 should send DV start-up report message 17 to center 136)
.

This enables subsequent one-way message transmission from center 1.

Note that when the TCE 2 detects a DV failure, it transmits a TCE→center DV failure report message 14 to the center 1 so that the center 1 does not output a one-way output message while the DV message is pending.

〔Effect of the invention〕

As described above, the present invention has the following effects.

, 4.

(1) By checking the warning messages, the operator of the terminal device can determine which message is received when the DV is detected.
It is possible to easily know whether a failure has occurred, and the continuity of messages from the center can be easily confirmed.

(2) Among terminal devices, especially reception-only printers, etc., even if the paper is replaced, etc., the TC
By putting the message on hold with E, it is possible to continue receiving the message.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of an online system according to an embodiment of the present invention, FIG. 2 is a time chart, and FIG. 3 is a diagram. FIG. 4 is a program processing flowchart of the terminal control device, and FIG. 5 is an explanatory diagram showing the DV status management area. 1... Center, 2... Terminal control device, 3... Terminal device, 10-17... Message, 20.30.
...TlcE program processing flowchart, 40...
・DV status management area.

Claims (1)

[Claims] 1. In an online system where it is possible to unilaterally and continuously send messages from the center to the terminal device via the terminal control device, the terminal device may be affected by some reason while sending messages from the center to the terminal control device. By providing a means for the terminal control device to detect the state of the terminal device when it becomes unreceivable and to store the state, when the terminal device starts up, if the terminal device is in the above state, A terminal control system characterized in that it is possible to notify an operator of the occurrence of message omission or duplication by outputting a caution message or the like from the terminal control device to the terminal device.