JPH0821045B2 - POS terminal control device - Google Patents

Description

The present invention relates to a POS terminal control device, and particularly to sales data that is logged while a central processing unit (upper processing unit) in a store is down. The present invention relates to a POS terminal control device suitable for uploading even during a sales transaction when the processing device is restored.

[Conventional technology]

Generally, in a POS system, when a central processing unit in a store is in a town due to a failure or the like, a POS terminal control unit stores sales data generated at a POS terminal in an external storage unit during that time. In this case, the conventional POS terminal control device cannot load (upload) the sales data, that is, the logging data, stored in the external storage device to the central processing unit after the recovery of the central processing unit in the store. After the completion of all the processes such as the above, that is, after the closing process, the upload is performed by the activation from the central processing unit in the store.

Incidentally, this type of POS system is discussed in "Software Science" Vol. 4, No. 7, 1972 pp. 23-29, for example, as "Point of Sales System".

[Problems to be solved by the invention]

The prior art does not consider that the POS terminal control device uploads the sales data logged while the central processing unit in the store is down after the central processing unit in the store is restored. This is because if the logging data is uploaded during sales, the processing time of the sales process will be delayed and there will be a problem with the processing of the transaction serial number, which is virtually impossible due to the nature of the system. It depends.

For this reason, uploading of logging data must be done in batch processing after closing processing, and if the central processing unit in the store goes down, there is a problem that accurate data cannot be obtained in subsequent inspection / inquiry processing. there were.

The object of the present invention is to enable the uploading of logging data by the POS terminal control device at any time after the restoration of the central processing unit in the store, and to secure the quality of inspection / inquiry data in the central processing unit in the store. Especially.

[Means for solving problems]

The present invention provides an identification code for determining whether or not the sales data accumulated in the external storage device when the central processing unit in the store is down, in the sales data, and at the same time, stores the sales data generated at the POS terminal. If the central processing unit in the store cannot be transferred to the central processing unit in the store, the identification code is changed to a code indicating that the sales data is logging data, and the sales data is logged in the external storage device. However, after recovery of the in-store central processing unit, if there is no request for processing such as sales transactions, the function to upload the logging data of the external storage device to the in-store central processing unit is provided.
Provide for POS terminal controller.

[Action]

Occurred at the POS terminal while the central processing unit in the store is down,
By providing the sales data stored in the external storage device, that is, the identification code for determining whether or not it is the logging data, it becomes possible to perform the transaction serial number check and the duplicate omission check of the sales data by the central processing unit in the store. .
Also, by making the processing unit that uploads logging data independent of other processing units and lowering the transmission priority of the logging data, the processing performance of sales transactions can be secured, so logging data uploading and sales transactions can be performed in parallel. Processing becomes possible, and there is no need to set a limit on the timing of sucking logging data.

〔Example〕

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

FIG. 1 is a system configuration diagram of an embodiment of the present invention.
In FIG. 1, an in-store central processing unit (SC) 10 has an active device 20 and a standby device 2 of a POS terminal control device via a transmission line L1.
Connected to 0 '. Current / spare POS terminal controller
20, 20 'have external storage devices 30, 30', respectively.
Further, a plurality of POS terminals (T1, T2, ...) Are connected to each POS terminal control device 20, 20 'through a transmission line L2.

The POS terminal control device 20, each processing unit of the subordinate transmission / reception processing unit 101, the POS terminal data processing unit 102, the SC data processing unit 103, the logging data transmission processing unit 104, and the superordinate transmission / reception processing unit 105,
And a lower-level reception buffer 111, a lower-level transmission buffer 112, a higher-level transmission buffer 113, a higher-level reception buffer 114, and a logging data transmission buffer 115. This also applies to the POS terminal controller 20 '. The functions of the processing units 101 to 105 are as follows.

The subordinate transmission / reception processing unit 101 transmits / receives data between the standby device 20 ′ and the POS terminal 40.

The POS terminal data processing unit 102 is a subordinate transmission / reception processing unit 101.
Is activated when data is received from the POS terminal 40, and the received data is processed.

The SC data processing unit 103 is activated when the upper-ranking transmission / reception processing unit 105 receives data from the in-store central processing unit (SC) 10, and processes received data.

The logging data transmission processing unit 104 is activated when the upper-reception transmission / reception processing unit 105 receives a sales data stored in the external storage device 30 while the in-store central processing unit 10 is down, that is, a suction request for logging data. The data is transmitted to the central processing unit 105 in the store.

The higher-ranking transmission / reception processing unit 105 includes the POS terminal control device 20 and
Data is transmitted and received between the central processing units 10 in the store.

In addition, the POS terminal control device 20 is the in-store central processing device 10
And status register indicating the status of POS terminal 40, external storage device 3
A write record counter indicating the number of records of logging data written to 0, a read record counter indicating the number of records of logging data read from the external storage device 30, and the like are managed, but they are omitted in FIG.

First, the sales data logging operation in the POS terminal control device 20 will be described with reference to the flowchart in FIG. FIG. 2 is a processing flow of the POS terminal data processing unit 102.

Now, it is assumed that data is received from the POS terminal 40. The subordinate transmission / reception processing unit 101 of the POS terminal control device 20 stores the data in the reception buffer 111 and activates the POS terminal data processing unit 102. A data type identification code is added to the received data.

The POS terminal data processing unit 102 determines whether the received data in the receiving buffer 111 is data to be transferred to the in-store central processing unit 10 or internal processing data (step 201). In the case of internal processing data, the POS terminal data processing unit 102 internally processes and ends (step 202). On the other hand, in the case of the transfer data to the in-store central processing unit 10, the flag indicating the state of the in-store central processing unit 10 is referred to (step 203).
The flag is set in the status register in the POS terminal controller 20. If the flag is normal, the data type identification code keeps the transfer data in the transmission buffer 113 as it is.
And sends a transmission request to the upper-layer transmission / reception processing unit 105 for transmission to the in-store central processing unit 10 (step 204),
Wait for the transmission to complete. Then, if the transmission is completed normally (step 205), the process is ended.

When the state of the central processing unit 10 in the store is abnormal, or when the transmission of the transfer data ends abnormally, the POS terminal data processing unit 102 determines whether the received data in the reception buffer 111 is sales data. (Step 206). And
If it is sales data, the write record counter indicating the number of records written in the external storage device 30 is incremented (step 207), and the data type identification code is stored in the external storage device 30 (logging data). After changing to the meaning code (Step 20
8), the reception data of the reception buffer 111 is stored in the external storage device 30 (step 209).

Next, the operation of uploading logging data to the in-store central processing unit 10 when executing a sales transaction will be described with reference to the flowcharts of FIGS. 3 and 4. FIG. 3 is a processing flow of the logging data transmission processing unit 104, and FIG. 4 is a processing flow of the upper-layer transmission / reception processing unit 105.

When the upper-layer transmission / reception processing unit 105 of the POS terminal control device 20 receives the logging data transfer request from the in-store central processing unit 10, the upper-layer transmission / reception processing unit 105 sends the logging data transfer request to the upper-layer reception buffer 114. After storing, the logging data transmission processing unit 104 is activated.

The logging data transmission processing unit 104 activated by the upper and lower transmission / reception processing unit 105 confirms the presence or absence of logging data by the value of the write record counter (step 301),
If the external storage device 30 has logging data, the logging data is read from the external storage device 30 and stored in the logging data transmission / reception buffer 115 (step 302), and a transmission request is issued to the host transmission / reception processing unit 105 (step 303). . If the transmission is completed normally (step 304), the read record counter indicating the number of records for which the logging data is read is incremented (step 30).
5) Return to step 301 to process the next data. When the transfer of logging data is completed (when the read record counter matches the write record counter) or when there is no transfer data (when the write record counter is 0), report no data to the in-store central processing unit 10. Then, the read / write record counter is set to 0 (step 306), and the operation ends (step 307). If the data transfer to the in-store central processing unit 10 fails,
The cause of failure is determined (step 308), and in the case of a resend request, a request for transmission is made again to the upper transmission processing unit 105.
If the in-store central processing unit 10 is down, the operation is ended without doing anything.

On the other hand, the higher-ranking transmission / reception processing unit 105 constantly monitors the transmission / reception request from each processing unit in the in-store central processing unit 10 and the POS terminal control device 20 (step 401), and when the transmission / reception request is issued, That process is executed every time. However, in order to secure the performance of the other processing unit, the transmission request of the logging data transmission processing unit 104 is accepted and processed only when there is no transmission / reception request from the other processing unit (step 40).
2,403,404).

As described above, the logging data transmission processing unit 104 is an independent processing unit, and the upper-layer transmission / reception processing unit 105 is operated to preferentially accept a transmission request from a unit other than the logging data transmission processing unit 104, and sales data. By providing the identification code of whether or not the data is logging data, it becomes easy to manage the sales data in the in-store central processing unit 10, and the logging data can be transferred even during the sales transaction.

When receiving data other than the logging data transfer request from the in-store central processing unit 10, the upper-layer transmission / reception processing unit 105 stores the received data in the upper-layer reception buffer 114, and then the SC data processing unit 103. To start. In the SC data processing unit 103, if the received data is internal processing data, internal processing is executed. If the received data is transfer data to the POS terminal 40, the transfer data is transferred to the transmission buffer 112, and the subordinate transmission / reception processing unit 101 is executed. To start. The subordinate transmission / reception processing unit 101 transfers the data in the transmission buffer 112 to the POS terminal 40.

In this embodiment, the timing of the reception response of the received data from the POS terminal 40 is not particularly mentioned, but the standby device
If 20 'is normal, it is the time when the standby machine 20' receives the POS terminal data sent via the active machine 20,
On the other hand, while the standby machine 20 'is down, the central processing unit 10 in the store
Is normal, when the data is stored in the battery-backed transmission buffer 113, and when the in-store central processing unit 10 is down, the data is stored in the external storage device 30. I will be.

Further, also regarding the transmission priority order control, not only the mere priority control, but during the transfer of the continuous message from the POS terminal 40 to the in-store central processing unit 10, the transmission request from the logging data transmission processing unit 104 is constantly monitored. A delay is applied so that the continuous message transfer operation can be prioritized.

[Effects of the Invention] As is clear from the above description, according to the present invention, the POS
Logging data can be transferred from the terminal control unit to the central processing unit in the store even during sales transactions, and the sales data transferred to the central processing unit in the store is an identification code indicating whether or not it is logging data. Is provided, the quality of inspection / inquiry data at the central processing unit in the store is improved,
This has the effect of facilitating store management.

[Brief description of drawings]

FIG. 1 is a system block diagram of an embodiment of the present invention, and FIG.
FIG. 4 is a process flow chart for explaining the logging data storage operation, FIG. 3 is a process flow chart for explaining the logging data upload operation, and FIG. 4 is a description of a data transmission request acceptance control operation for the central processing unit in the store. It is a processing flow diagram for use in. 10 ... Central processing unit in store, 20 ... POS terminal controller active machine, 101 ... Subordinate transmission / reception processing unit, 102 ... POS terminal data processing unit, 103 ... SC data processing unit, 104 ... Logging data Transmission processing unit, 105 ... Higher-order transmission / reception processing unit, 30 ...
… External storage device, 40… POS terminal.

Claims (1)

[Claims] 1. A POS that controls a POS terminal under its control based on an instruction from a central processing unit in a store (hereinafter referred to as a higher-level processing unit).
In the terminal control device, when the upper processing device is normal, a transmission request is issued to transmit the sales data generated at the POS terminal together with the identification code added to the sales data to the upper processing device, and the upper processing device Is abnormal, first processing means for logging the sales data generated at the POS terminal to an external storage device with an identification code indicating that the sales data is logging data, and the external storage device. If there is logging data in the second processing means, the second processing means for reading the logging data and issuing a transmission request to transmit to the upper processing device together with the identification code added thereto, and a processing request from the upper processing device and The transmission requests from the first processing means and the second processing means are monitored, and if there is a request from the host processing device or the first processing means, When the transmission request from the second processing means is received without a request from either the upper processing device or the first processing means, the transmission request from the second processing means is executed with priority. A POS terminal control device, comprising: a third processing unit that receives and executes.