JPS59229660A - Updating method of data file - Google Patents

Abstract

PURPOSE:To continue terminal operation such as note issuing smoothly without subjecting excessive load to an operator by updating automatically a data file by a comparison processing part in a central processor. CONSTITUTION:When the centeral processor stops operating, data immediately before the stop of the operation are stored in a non-volatile storage device 23 of a terminal 2. Data in the non-volatile storage device 23 and data in a note issuing counter 26 are used to send a note issuing request signal to the centeral processor 1 when an inquiry signal is entered. A processor 10 inputs these data in a comparion processing part 14. The processing part 14 reads out data of a terminal from a data file 13 and compares the read-out data with the entered data. When both the data are dissident each other, operation is executed, the data file 13 is updated and then processing for responding to a new processing request is started. In the terminal, new note issuing operation is executed.

Description

Detailed Description of the Invention (1) Technical Field of the Invention The present invention is a system that performs predetermined operations through communication between a terminal and a central processing unit, and when the terminal or the central processing unit malfunctions due to a power outage, etc., the system can be restored. It later relates to a method for automatically updating data files in a central processing unit.

(2) Background of the technology As in the totalizer system, a large number of terminals are connected to a central processing unit, and each terminal needs to notify the central processing unit and obtain permission each time a voting ticket is sold. 1st
As shown in the time chart shown in the figure, when the central processing unit CPU sends a signal ENQ inquiring to the terminal TM whether there is data to be notified, if the terminal just has the data, it sends back a ticket issue request signal AD. The signal includes data such as the current number of issued tickets and price of the terminal, as well as data for requesting new ticket issuance. The central processing unit checks the validity of the incoming signal (CHK),
When valid, response data RD is sent for ticket issuing permission.

The terminal checks the validity of the response data RD CH
Do K. When valid, the acknowledgment signal ACK is returned to the central processing unit, and the central processing unit performs update processing on the data file corresponding to the terminal. The terminal performs an operation, such as issuing a ticket, after a certain operation waiting time T (which roughly corresponds to the file update time in the central processing unit) has elapsed. When the terminal returns an ACK signal, if the terminal stops operating due to a power outage or other reason, the central processing unit's data file will be updated, but the terminal will not issue tickets, so the central processing unit's file will be updated. There is a difference between the situation of the device and the situation of the terminal.

(3) Prior Art and Problems When an operation stops due to a power outage or the like, it is necessary to update the above-mentioned data file to the correct value, which conventionally required manual intervention. That is, since journal printing is performed on the terminal side during the ticket issuing operation, when the stoppage of operation is restored, the operator refers to the journal printing, determines whether or not to modify the file, and performs the modification operation from the terminal. Therefore, there was a problem in that it placed a burden on the operator.

(4) Purpose of the Invention The purpose of the present invention is to improve the above-mentioned drawbacks, and to provide a system that uses a simple configuration to automatically perform predetermined updates of data files when a terminal or central processing unit stops operating. Our goal is to provide the following.

(5) Structure of the Invention The structure of the present invention to achieve the above-mentioned object is to notify data from a plurality of terminals to a central processing unit, and after processing, the central processing unit transmits response data to each terminal, and In a method in which the central processing unit updates the data file for each terminal when the terminal performs a predetermined operation based on the response data, each terminal has a storage device and the central processing unit has a comparison processing unit. The storage device holds the latest data to be notified to the central processing unit, and the comparison processing unit reads and compares the latest data notified from the terminal with the data file related to the terminal, and determines whether the data is different. When there is a data file, it performs arithmetic processing and updates the data file.

(6) Embodiment of the Invention FIG. 2 is a block diagram showing the configuration of a central processing unit and a terminal as an embodiment of the invention. In FIG. 2, the central processing unit (1) includes a processor (10), a power supply unit (1
1), communication control unit (12), data file (13)
) and a comparison calculation processing section (14). Each terminal (2) includes a processor (20) and a power supply unit (21).
), communication control unit (22), non-volatile storage device (23)
), keyboard (24), journal printing section (25)
), a ticket issuing counter (26), a ticket issuing unit (27), a panel display unit (28), and a valid ticket detecting unit (29).The operation will be explained with reference to the time chart shown in Fig. 3.Central processing When the device stops operating, the inquiry signal ENQ does not arrive at the terminal at the scheduled time, so the terminal emits an alarm and notifies the operator that an error has occurred in the transmission path.In this case, the operation of the central processing unit is restored and remains in the new state until it sends out the inquiry signal ENQ.When the signal ENQ arrives, the non-volatile storage device (23) sends out the ticketing request signal AD to the central processing unit (1). data and the ticketing counter (2
6) data is used.

The processor (10) takes these data into a comparison calculation processing section (14) before normal processing. The processing section (14)
reads the data of the terminal from the data file (13) and compares it with the data that has just arrived. If the two are different, the data file (13) is calculated and updated, and then processing begins to respond to the new processing request. The update processing data and response data are then sent to the terminal, where they are printed in a journal and a new ticket issuance operation is performed.

If only the following terminals stop working, the signal EN
It is not possible to respond to Q, and the processor treats the terminal as defective. After recovery, the first signal AD is sent out starting from the data immediately before the operation stopped, as in the case described above. Thereafter, the operation of the central processing unit is the same as described above.

(7) Effects of the Invention Conventionally, terminals did not have a device to store the data immediately before the operation stopped, especially an electrical storage device, so it was not possible to automatically send the immediately preceding data when the operation was restored. . According to the present invention, this is possible, and since the comparison processing unit in the central processing unit automatically updates the data file, there is no excessive burden on the operator, and terminal operations such as ticket issuing can continue smoothly. . Also, the data in the central processing unit is always accurate.

[Brief explanation of drawings]

Fig. 1 is a diagram showing a conventional operation sequence for data transfer between a terminal and a central processing unit, Fig. 2 is a block diagram showing the configuration of an embodiment of the present invention, and Fig. 3 explains the operation of Fig. 2. This is a diagram. E N Q - Inquiry signal AD - Ticketing request signal CPU U - Central processing unit RD
・One response data TM one terminal A CK-・Acknowledgement signal (1) --・Central processing unit (2) One terminal (10)
(20)--Processor (13)--Data file (14)--Comparison calculation processing section (23)--Nonvolatile storage section (25)--Journal printing section (26), -m-Ticketing counter Patent applicant Fujitsu Ltd. agent Patent attorney Eisuke Suzuki

Claims (1)

[Claims] Data is notified from multiple terminals to the central processing unit, the central processing unit sends response data to each terminal after processing, and when each terminal performs a predetermined operation based on the response data, the central processing unit In a method of updating data files for each terminal, each terminal is equipped with a storage device, and the central processing unit is equipped with a comparison processing unit, and the storage device holds the latest data to be notified to the central processing unit. , the comparison calculation processing unit reads and compares the latest data notified from the terminal and the data file related to the terminal, and when they are different, performs calculation processing and updates the data file. method.