JPS62169266A - Data transmission and reception terminal equipment - Google Patents

Abstract

PURPOSE:To prevent the extinction of data by monitoring the line state even in off-line to store transmission data for line troubles and transaction data in off-line. CONSTITUTION:The state of the line to a host is always monitored by a line control part 22 of a terminal equipment provided with a main control part 12, an input/output control part 14, a keyboard 16, a display device 18, a printer 20, the line control part 22, and a storage part 24; and if the line is normal, this state is reported to the main control part 12. When receiving this report, the main control part 12 displays this state on the display device 18 through the input/output control part 14. If detecting a line trouble, the main control part 12 stores data as an untransmitted transaction data file in the storage part 24 and displays the state of off-line on the display device 18. When the line is restored, untransmitted transaction data stored in the storage part 24 is read out and is transmitted to the host.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a terminal device that is connected to other devices via a line to transmit and receive data, and the present invention relates to a terminal device that transmits and receives data by connecting with other devices via a line, and that changes from offline operation when a line failure occurs to online operation when the line is restored. The aim is to facilitate the switching of

[Conventional technology]

Bank terminals are usually connected to a host through a line and operate online. FIG. 7 shows an outline of this type of data processing system, in which a large number of terminals T are connected to a host via a terminal control device T/C and a telephone line TL, and transmit and receive deposit and withdrawal data, etc., using a polling method.

When a terminal device with such input/output functions inputs and outputs data and transmits data with the host via the line, if a failure such as a line disconnection occurs as shown in Figure 2, the connection between the terminal and the host will be interrupted. Data transmission is not possible (and the terminal device displays a line failure occurrence and stops operating.The operator then switches to offline mode (local mode) and performs the few transactions that are allowed in this state. However, transactions that can only be done in online mode will be suspended and waiting for the line to be restored.

If the terminal device starts operation without being connected to the host,
In this case as well, the terminal device will operate in offline, local mode.

[Problem that the invention seeks to solve]

Once the terminal device starts operating offline, even if the line between the terminal and the host is established or restored, the terminal will continue to operate offline unless the operator resets the device or restarts the terminal, and the terminal will not switch back to online mode operation. No.

In financial terminals, the number of transaction modes that can be operated online is, for example, 100, while the number of transaction modes that can be operated offline is, for example, 10, which is extremely small. The present invention attempts to improve this point.

[Means for solving problems]

The present invention provides a means for monitoring the line status even when offline in a terminal device that is equipped with a keyboard, a display, a main control unit, and a line control unit, and is connected to other devices via a line to transmit and receive data, and a means for monitoring the line status in the event of a line failure. A storage unit is provided to store transmission data and offline transaction data,
When offline, when the monitoring means detects that the line has been restored, the main control section displays a message to that effect on the display, and presses the keyboard i.
The system is characterized in that the data stored in the storage section is read out at the time of operation, sent to the line, and then switched to the online mode.

[Effect]

To explain with reference to FIG. 1, in the present invention, the line control unit 22 of a terminal device having a main control unit 12, an input/output control unit 14, a keyboard 16, a display 18, a printer 20, a line control unit 22, and a storage unit 24 is (Even during offline operation)
The state of the line with the host is monitored, and when the line is normal (restored), the main control unit 12 is notified of this fact. When the main control section 12 receives this, it displays this on the display 18 via the input/output control section 14 to notify the operator. When the operator learns that the line is normal, he performs an operation to transmit the offline input data stored in the storage unit 24 to the host. Once the data has been transmitted, the terminal automatically switches from offline to online so that operations can continue and online transactions can be processed. Note that the transmission of input data to the host during offline mode can also be made executable at an appropriate point during operation in online mode.

When a line failure such as line disconnection occurs, the terminal device switches from online to offline, and conventionally this process has been performed as follows. In other words, ■The main control unit detects a line failure, and ■The main control unit displays the line failure on the display DIS.
The information is displayed on the PC, etc., and the operator is notified. ■The main control unit waits for the device to be reset, and the operation cannot be continued.

■The device is reset by the operator's device reset operation (power off/on), and the device becomes operable. ■
The operator performs an operation to switch to offline (local processing) mode and continue the operation offline. At this time, all the input data at the time of detecting the line failure are discarded.

Although line disconnections may occur very rarely, if line errors (such as line disconnections) occur occasionally or frequently,
As mentioned above, it is extremely inconvenient if the device stops operating due to a line error, waits for reset, or loses unsent data. Therefore, the present inventor improved this as follows.

In other words, if the main control section detects a line failure, the main control section stores the transmitted data in the storage section 24 as an unsent transaction data file, displays the offline status on the display 18, and informs the operator. Notify and also turn on the local mode flag. ■The operator can continue to enter transaction data (only for transactions that can be done offline), and future transaction data will be stored in the unsent transaction data file in the storage unit 24 until the line is restored. When the line is restored, the data is read from the storage unit 24 and transmitted to the host. In this way, transaction data will not be lost when a line failure occurs, and all transaction data during offline operation can be stored in the storage unit and transmitted to the host after the line is restored. It is also possible to increase the types of transactions that can be operated offline.

The present invention is advantageous when used in combination with such processing methods, and will be described below in this case.

〔Example〕

FIG. 3 shows the processing procedure in the above improved method. If the line is normal and the terminal device operating online sends data to the host, the processing program next checks whether the line is OK, and if no (if there is no response received from the host), it immediately switches to local mode. , display 18
Display that fact and turn on the local flag.

This flag is attached to each type of transaction mode, and is set to, for example, 1 if the transaction is allowed, and 0 if it is not allowed. To enter transaction data at a financial terminal, as shown in Figure 5 (al), first select a savings account or a current account by pressing the item key, then select a deposit/withdrawal, and then enter the financial information. , so when the subject key is pressed, by checking the flag of the subject (transaction), you can easily know whether the transaction is allowed or not.Local flag on means that it can be allowed even offline. In this example, the flag for transactions is set to 1, and the flags for other transactions are set to O.If you switch from online to offline without stopping the device as shown in Figure 3, the local ( If the transaction is possible even in the offline) mode, the operator can continue inputting data, and the input data will be sequentially stored in the local transaction area of the storage unit 24.Of course, the transaction at the time the line failure occurred If it is not allowed in local mode, the transaction will be interrupted, and even if you try to input data using the keyboard, the local flag will be on, so this will not be accepted.Check if the line is OK. If yes, proceed to process the response from the host as usual and move on to the next transaction.

FIG. 4 shows the conventional method. After sending data to the host, a check is made to see if the line is OK. If no, it is determined that the line is faulty, this is displayed on the display, and the operation is stopped. Even if you enter data, it will not be accepted. To enable this, the operator must perform a reset operation, ie, turn off the device power and then turn it on for initial processing.

In this initial process, the line status is checked, and if the line is normal, the mode goes online, and if the line is abnormal, it waits for switching to local mode. This allows local key operation,
After inserting the executive card and entering the PIN code, the mode switches to local mode and local transactions can be processed.

Figure 5 (bl shows the procedure for processing transaction data using the method shown in Figure 3. Pressing the item key, selecting deposit/withdrawal, and inputting the amount are the same as before, but here you can check whether you are in online mode or not. is checked, and if it is online, it will be sent/received, and if it is not online, it will be written to memory.

While performing local transactions in offline mode, the present invention monitors the line as shown in FIG.
Check if there is a response.

This involves sending a message from the terminal to the host and checking to see if there is a response. If not, there is still a line problem, so the above operation is repeated at appropriate intervals and waits for a response. terminal,
When data transmission between hosts is performed by polling, inquiries from the host to the terminal as to whether there is data are periodically received, so it is sufficient to monitor the arrival of the matching command. When there is a response from the host, it means that the line has been restored, so it is displayed on the display 18 and the operator is notified to that effect. The operator then presses the line recovery transaction key to enter recovery. In the polling method, since the host makes an inquiry as to whether data is available, a response indicating that data is available is returned.In response, the center issues a command to send data, so transaction data is read from the storage unit 24 and sent to the center.

Data transmission is performed one transaction at a time, and when all the data stored in the storage section has been sent, the recovery process ends and the terminal shifts to normal online mode processing. At this time, the local flag is turned off.

〔Effect of the invention〕

As is clear from the above description, the present invention eliminates the need for operations such as resetting the device when returning online when the line is normal, and stores transaction data during offline operation and sends it to the host when going online. Therefore, advantages such as no data loss can be obtained.

[Brief explanation of drawings]

Fig. 1 is a block diagram of the terminal device of the present invention, Fig. 2 is a block diagram showing a conventional example, Figs. 3 and 4 are flow charts showing processing procedures in the event of a line failure, and Fig. 5 is a processing of transaction data. FIG. 6 is a flowchart showing the recovery procedure of the present invention, and FIG. 7 is a block diagram of the data processing system.

Claims (1)

[Scope of Claims] In a terminal device that is equipped with a keyboard, a display, a main control unit, and a line control unit, and is connected to other devices via a line to transmit and receive data, means for monitoring the line status even when offline, and a line A storage section is provided to store transmission data at the time of a failure and transaction data at an offline time, and when the monitoring means detects line recovery during an offline state, the main control section displays a message to that effect on a display, and the main control section displays the data stored in the storage section by operating a keyboard. A data transmitting/receiving terminal device characterized in that it reads out the data, sends it to a line, and then switches to an online mode.