JPS6053344B2 - Terminal recovery method - Google Patents

Description

Detailed Description of the Invention (a) Technical Field of the Invention The present invention relates to a system related to a terminal machine (a betting ticket issuing machine and a payout machine) in a totalizer system used in horse racing, bicycle racing, bicycle racing, etc. The present invention relates to a terminal recovery method, and particularly to a terminal recovery method with high reliability.

(b) Prior art and problems The totalizator system usually consists of a central computer and a number of terminals (voting ticket issuing machines and refund machines), but it is not only a system that is directly connected to cash, but also a short-term Since it is necessary to process an extremely large amount of work in a given amount of time, various studies have been conducted on the structure and component equipment, and implementation has been based on this research.

For this reason, we have duplicated the system, and on the center side, we have duplicated not only the computers but also the main crossbars, in order to make the system as stable as possible. However, in the conventional system, each time the voting ticket issuing board issues one voting ticket, the contents of the issued voting ticket are sent to the center. Therefore, if the center's computer or terminal goes down due to a failure while the contents of the voting ticket are being sent to the center, there is a possibility that an error may occur in the aggregation of the contents of the messages that are in progress. After the computer at the center was restored, the following steps were taken as part of the recovery process. 1 Copy the contents of the final processing messages from each terminal in the core and memory of the central computer onto magnetic tape.

2. After the sales deadline, output the contents copied in step 1 to a CRT display or printer.

・3 Find the data corresponding to the contents of the terminal device where the discrepancy in sales proceeds occurred from among the data outputted in accordance with 2, compare the contents of the final processing message at that time with the copy printed on the terminal, Determine whether the sales proceeds are correct or not.

We have ensured the accuracy of our work by always performing the processes described above as part of the recovery work immediately after the center's computers have been restored.

However, since carrying out such a series of operations is complicated, this relief has been strongly desired for some time.

(C) Object of the invention The object of the invention is to eliminate the above-mentioned disadvantages,
To simplify the recovery work immediately after the computer at the center is restored and to provide a highly reliable system.

(d) Structure of the Invention According to the present invention, the above object is to transmit and receive messages between arbitrary terminals and computers in a totalizer system consisting of a central computer and a large number of terminals. If an abnormality occurs in the computer during the process, the terminal has a function to remember that an abnormality has occurred in the computer, and the terminal automatically returns to the computer when the computer recovers due to the storage function. means for transmitting a recovery request signal; means for the computer receiving the recovery request signal to transmit to the terminal the final message received from the terminal before the abnormality occurred;
This is achieved by providing a terminal recovery method characterized in that the terminal has means for receiving the final message and printing it on a receipt of the terminal.

(e) Embodiments of the Invention In the present invention, when an abnormality occurs in the computer at the center, even though the terminal device sends a tally message to the computer at the center based on the command from the computer at the center. , a telegram conveying the results of the aggregation was not sent from the computer at the center even after a certain period of time had passed.
Since it is possible to identify when an error has occurred in the center's computer, it is possible to record the fact that an error has occurred in the center's computer in the terminal, and then when the center's computer is restored, it can be used. , automatically performs a recovery inquiry and prints the final message on the receipt.

By doing this, we aim to eliminate the need for operations 1, 2, and 3, which were previously performed when the computer at the center was restored. In other words, it is determined that an abnormality has occurred in the computer at the center, and the terminal that remembers this information,
When the center's calculator is restored, it automatically queries the contents of the final message and prints the resulting final message on the ticket, so there may be discrepancies when checking sales or refunds after the sale or refund deadline. We submitted this proposal based on the fact that, in the event of a discrepancy, it is possible to determine whether or not the sales proceeds are correct by simply examining the printed receipt, without having to contact the center. Specific examples of the present invention will be described below with reference to the accompanying drawings. In the attached figure, IF'C is an interface control circuit, 1 is a transmission message generation circuit, 2 is a timer circuit, 3 is a control code analysis circuit, 4 is a receipt printing control circuit, 5 is a reception message analysis circuit, and 6 is a reception message analysis circuit. The receipt, FF1, and FF2 are all flip-flops, and G is a genote circuit. Interface control circuit 1 Transmission message generation circuit 1 in FC
Now, after sending the total message to the computer at the center,
At the same time as issuing a total message sending end signal and setting the flip-flop lower F1, the timer circuit 2 is activated to monitor whether a response signal is received from the central computer within a certain period of time.

(In the present invention, the length of this fixed time is set to about 8 seconds) Normal operation state (when the center computer is operating normally)
In this state), once the total message has been sent to the center computer, a response to the total message will be sent from the center within a certain period of time, so the bottom F1 of the flip flop is reset by the total message response signal, and the flip ●No change occurs in the state of flop FF2.

However, if an error occurs in the computer at the center, even after the terminal has finished sending out the tally message, a response to the tally message is not sent from the center within a certain period of time, so the timer circuit 2 An over signal is generated, and the AND of this signal and the flip-flop FFl is performed in the gate circuit G.
The flip-flop FF2 is set, and the recovery request signal is sent to the interface control circuit 1F.
It is sent to the transmission message generation circuit 1 in C.

On the other hand, when the computer at the center is restored, the control code analysis circuit 3 in the interface control circuit 1F'C generates a center restoration signal. A recovery inquiry is made to the computer, and the received message analysis circuit 5 receives the final tally message contents from the center, and sends them to the receipt printing control circuit 4. Ticket printing control circuit 4
When the final message content is printed on the ticket, a recovery inquiry end signal is issued and the lower flip-flop F2 is reset. As explained above, even when communication is interrupted due to a failure of the center computer during communication between the center computer and the terminal, it is necessary to carry out 1 and 2 in the past. , 3 can be eliminated, making it possible to greatly simplify the recovery work.

(f) Effects of the Invention As explained in detail above, according to the present invention, during communication between a computer at the center and a terminal, communication is interrupted due to failure of the computer at the center, etc. This has the great effect of providing a more reliable and easy-to-operate system that does not cause data loss, errors, etc.

[Brief explanation of drawings]

The figure shows the configuration of a device that is an embodiment of the present invention.
In the figure, IFC is an interface control circuit, 1 is a transmission message generation circuit, 2 is a timer circuit, 3 is a control code analysis circuit, 4 is a receipt printing control circuit, 5 is a received message analysis circuit, 6 is a receipt, Both FFl are flip-flops, and G is a gate circuit.

Claims (1)

[Claims] 1. In a totalizer system consisting of a central computer and a large number of terminals, if an abnormality occurs in the computer while transmitting and receiving messages between any terminal and the computer, the a function for storing that an abnormality has occurred in the computer; a means for the terminal to automatically send a recovery request signal to the computer when the computer is restored by the storage function; and a means for receiving the recovery request signal. The computer that received the error must have means for transmitting the final message received from the terminal before the occurrence of the abnormality to the terminal, and means for receiving the final message and printing it on the receipt of the terminal. A terminal recovery method featuring: