JP7586537B2 - Product sales data processing system, registration device, and program - Google Patents

Description

The present invention relates to a product sales data processing system, a registration device, and a program.

2. Description of the Related Art There is known a POS (Point Of Sales) system that includes a registration device that registers merchandise and a payment device that settles the payment for the merchandise registered by the registration device.
Furthermore, among the above-mentioned POS systems, there are known systems that are capable of a process called recall. As an example, recall is performed as follows. After the registration data for a certain transaction is output from the registration device to the settlement device, a customer may request a change to the registered contents, such as adding an additional product. In such a case, the store clerk operating the registration device performs a recall operation to instruct the registration device to recall the registered data corresponding to the transaction in question.

In response to the recall operation, the settlement process based on the registration data corresponding to the relevant transaction in the settlement device is temporarily canceled, and the registration data corresponding to the relevant transaction is recalled from the settlement device to the registration device. By recalling the registration data to the registration device in this way, the store clerk can make corrections to the recalled registration data, such as adding or canceling products.

The above-mentioned recall operation is performed, for example, as follows. The store clerk operating the registration device first displays an unsettled list screen that shows a list of transactions that have not yet been settled among the transactions corresponding to the registration data output to the settlement device. The store clerk selects the transaction corresponding to the registration data to be recalled from the list of transactions shown on the displayed unsettled list screen, and then performs an operation to instruct the execution of the recall (for example, pressing a button). In response to the operation to instruct the execution of the recall, the registration data corresponding to the selected transaction is output to the registration device so that it is returned from the settlement device (for example, see Patent Document 1).

JP 2016-91185 A

Currently, there are POS systems in which, even when the settlement device is currently processing a settlement using one registered data, there is no particular limit on the number of registered data that the settlement device can accept for subsequent settlement processing, or the upper limit on the number of registered data that the settlement device can accept is relaxed and set to a relatively large number. In such POS systems, the number of unsettled registered data sent from the registration device to the settlement device becomes quite large. In such cases, the above-mentioned recall operation is effective because it makes it easy to identify the transaction to be corrected from among the many unsettled transactions shown on the unsettled transaction list screen.

However, experience with POS systems has led to the realization that, for example, limiting the number of registration data that a settlement device can accept from a registration device makes accounting smoother. For this reason, there is currently a trend to limit the number of registration data that a settlement device can accept from a registration device to, for example, one.
Generally, one registration device corresponds to at most three settlement devices. In this case, if the upper limit of the number of registration data that a settlement device can accept from a registration device is one, the number of registration data that is unprocessed on the settlement device side corresponding to one registration device will also be a maximum of three. If the number of unprocessed registration data is this small, the store clerk can remember which transaction's registration data was output to which settlement device.
Considering the above, the recall operation of displaying the unsettled list screen and selecting the transaction to be corrected results in a wasteful procedure in a POS system in which the settlement device limits the number of registered data items that it can accept from the registration device.

The present invention has been made in consideration of these circumstances, and aims to enable efficient recall of registration data from a settlement device to a registration device in a product sales data processing system equipped with a registration device and a settlement device.

One aspect of the present invention that solves the above-mentioned problems is a product sales data processing system that includes a registration device where products are registered, and a settlement device that performs settlement processing based on registration data related to products registered by the registration device in response to a customer's operation, and that includes a display means that displays an in-use indicator that indicates a settlement device that is in use and has not yet completed settlement processing based on the acquired registration data, and a call-back control means that controls the recall of registration data from the in-use settlement device to the registration device in response to an operation on the in-use indicator.

Another aspect of the present invention is a registration device that includes a registration data output means for outputting registration data related to registered products to a settlement device that performs settlement processing based on the registration data in response to a customer's operation, a display means for displaying an in-use indicator that indicates a settlement device that is in use and has not yet completed settlement processing based on the acquired registration data, and a recall control means for controlling the recall of registration data from the settlement device in use to the registration device in response to an operation on the in-use indicator.

Also, one aspect of the present invention is a program for a product sales data processing system that causes a first computer to function as a registration device where products are registered, and causes a second computer to function as a settlement device that performs settlement processing based on registration data related to products registered by the registration device in response to a customer's operation, and causes the first computer to function as a display means that displays an in-use indicator that indicates a settlement device in an in-use state where settlement processing based on acquired registration data has not yet been completed, and as a call-back control means that controls the call-back of registration data from the in-use settlement device to the registration device in response to an operation on the in-use indicator, and causes the second computer to function as a registration data output means that outputs registration data from the in-use settlement device to the registration device in response to control of the call-back control means.

Another aspect of the present invention is a program for causing a computer serving as a registration device where products are registered to function as registration data output means for outputting registration data relating to registered products to a settlement device that performs settlement processing based on the registration data in response to a customer's operation, display means for displaying an in-use indicator that indicates a settlement device that is in use and has not yet completed settlement processing based on the acquired registration data, and recall control means for controlling the recall of registration data from the settlement device in use to the registration device in response to an operation on the in-use indicator.

According to the present invention, in a product sales data processing system equipped with a registration device and a settlement device, the effect of efficiently recalling registration data from the settlement device to the registration device can be obtained.

1 is a diagram illustrating an example of the configuration of a POS system according to a first embodiment. 1 is a diagram showing an example of the appearance of a registration device and a settlement device in a first embodiment. FIG. FIG. 2 is a diagram illustrating an example of the configuration of a registration device in the first embodiment. FIG. 2 is a diagram illustrating an example of the configuration of a settlement device in the first embodiment. FIG. 13 is a diagram showing an example of a product registration screen in the first embodiment. 10 is a flowchart illustrating an example of a process procedure executed by the registration device in relation to a recall in the first embodiment. FIG. 13 is a diagram showing an example of the display of a settlement tab in the second embodiment. 13 is a flowchart illustrating an example of a processing procedure executed by the registration device in relation to displaying a settlement tab in the second embodiment. 13 is a flowchart illustrating an example of a processing procedure executed by the registration device in the second embodiment in relation to recalling registration data. FIG. 23 is a diagram showing an example of a product registration screen corresponding to corrected registration data in the eighth modified example.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
First Embodiment
Fig. 1 shows an example of the configuration of a POS system 1 (an example of a product sales data processing system) according to this embodiment. The POS system 1 shown in the figure includes a management device 10, one registration device 20, and two settlement devices 30-1 and 30-2.
In the following description, unless there is any particular need to distinguish between the settlement devices 30-1 and 30-2, they will be referred to as settlement device 30.
The management device 10, the registration device 20, and the settlement device 30 are connected to each other via a wired or wireless LAN (Local Area Network) 11.

The configuration of the POS system 1 shown in the figure is just an example. For example, the POS system 1 may include two or more registration devices 20, or one or three or more settlement devices 30. The POS system 1 of this embodiment may not include the management device 10.
In addition, if the configuration of the POS system 1 does not include the management device 10, another device (for example, if there are multiple registration devices 20, a single representative registration device 20) may be made to function as the management device 10.

The management device 10 is an information processing device that manages the POS system 1, and manages the registration devices 20 and the settlement devices 30 in the POS system 1, and manages various information such as a product master. The management device 10 appropriately transmits the latest product master to the registration devices 20 and each settlement device 30. The product master is a file that stores product information such as product identification information (e.g., JAN code), product name (product name, item name), sales price, discount information, etc. for each product.
The management device 10 acquires a product master reflecting the latest product information from an external source (e.g., a headquarters server, a removable storage medium) and transmits it to the registration device 20 and each settlement device 30 as appropriate.

The registration device 20 executes a product registration process for registering a product to be purchased. The product is registered, for example, by using a scanner to read a barcode attached to the product or by operating a preset button or the like displayed on a product registration screen.
The registration device 20 also generates and stores data related to the registered products and information used for settlement (hereinafter referred to as registration data).

The registration data includes registration data identification information for identifying the registration data, the registration date and time, product identification information for each registered product, the product name, sales price, discount information, a transaction point (purchase point number) indicating the number of products to be purchased, and a total price (total amount) of the products to be purchased. The registration data may further include registration device identification information for identifying the registration device 20 that generated the registration data (i.e., the registration device 20 that registered the products related to the registration data).
When the POS system 1 has multiple registration devices 20, the registration device identification information is used, for example, when the settlement device 30 identifies the registration device 20 with which it is communicating.

The registered data is used for the settlement process in the settlement device 30. The settlement process is a process in which the price of the registered products is paid and settled selectively using cash, electronic money, credit card, etc.

In this embodiment, there are multiple settlement devices 30, and one of the multiple settlement devices 30 executes the settlement process using the product registration data generated by the registration device 20. The following first and second designation modes can be used to specify the settlement device 30 that should execute the settlement process from among the multiple settlement devices 30.

The first designation manner is a manner in which a store clerk uses the registration device 20 to designate the settlement device 30 that will execute the settlement process.
That is, the store clerk performs an operation to specify a settlement device 30 on the registration device 20, thereby specifying one of the multiple settlement devices 30 that is to execute the settlement process.
In addition, the registration device 20 may be configured to display operation information indicating the operation status of each settlement device 30, so that when a store clerk selects a settlement device 30 on the registration device 20, the operation status of each settlement device 30 can be checked.

When a store clerk designates a settlement device 30, registration data including the product registration data generated in the registration device 20 is transmitted to the designated settlement device 30 via the LAN 11. In other words, when a settlement device 30 is designated following the product registration process, the registration device 20 transmits registration data including the product registration data based on the product registration process to the designated settlement device 30.
In this embodiment, the registration device 20 transmits the registration data directly to the settlement device 30 , but the registration data may be transmitted to the settlement device 30 via the management device 10 .

The second designated mode is a mode in which a medium for payment processing (a receipt (registered trademark)) is issued from the registration device 20, and the receipt handed over by the store clerk is read by the customer by one payment device 30.
That is, the customer designates one of the multiple payment devices 30 that will carry out the payment process by having the payment device 30 read the bill handed to him by the store clerk.
On the receipt, a registration device ID indicating the registration device 20 that issued the receipt and the registration data are printed in the form of a code, either a barcode (one-dimensional code) or a two-dimensional code. When the settlement device 30 reads the code on the receipt, it obtains the product registration data from the registration data indicated by the read code.

In the following, we will explain the POS system 1 of this embodiment by taking as an example a case in which the settlement device 30 that should execute the settlement process is specified in the first specification mode.

The settlement device 30 executes the settlement process in response to the customer's operation. When the settlement process is completed, the settlement device 30 notifies the registration device 20 of the completion of the settlement process.

Next, examples of the configuration of the registration device 20 and the settlement device 30 will be described with reference to FIGS.
Fig. 2 is a perspective view showing an example of the appearance of the registration device 20 and the settlement device 30. Fig. 3 is a block diagram showing an example of the configuration of the registration device 20. Fig. 4 is a block diagram showing an example of the configuration of the settlement device 30.

As shown in FIG. 3, the registration device 20 includes a CPU (Central Processing Unit) 201, a memory unit 202, a RAM (Random Access Memory) 203, a scanner unit 204, a store clerk display unit 205, a customer display unit 205a, an operation unit 206, a communication unit 207, a buzzer 208, a printing unit 209, and a card reader 210. These can communicate with each other via a bus.

The CPU 201 is a central processing unit that controls the operation of the registration device 20 by reading and executing programs stored in the storage unit 202 .
The storage unit 202 is an auxiliary storage device for the CPU 201, and stores various types of information used by the CPU 201, including programs.

The RAM 203 is a main storage device for the CPU 201 and stores various information, for example, the RAM 203 stores product master data acquired from the management device 10, registration data generated after the product registration process, and the like.
The scanner unit 204 optically reads the barcode (product code) attached to the product.

The store clerk display unit 205 is a touch panel (for example, a liquid crystal touch panel) and displays various information for the store clerk.
For example, the store clerk display unit 205 displays a product registration screen on which preset buttons associated with product information (product code, etc.) are arranged.

The customer display unit 205a displays various information for customers. For example, the customer display unit 205a displays the price of registered products. The customer display unit 205a may be a touch panel (e.g., a liquid crystal touch panel).

The operation unit 206 has various operation buttons (subtotal key, current total key, number entry key, correction key, preset key, etc.) for operating the registration device 20. For example, when an operation button (preset key) is operated, the operation unit 206 accepts operation input for product information (product code, etc.) that is previously set and registered in that preset key.

The communication unit 207 communicates with other devices via the LAN 11 .
The buzzer 208 generates a buzzer sound when it is necessary for a store clerk to confirm an operation.
The printing unit 209 prints and issues media as necessary. For example, the printing unit 209 can print and issue accounting tickets.

The card reader 210 is a device that reads information from an RFID (Radio Frequency Identifier) tag in the form of an IC (Integrated Circuit) card, for example.

Figure 2 shows an example of the external appearance of the registration device 20, which includes a scanner unit 204, a display unit for store clerks 205, an operation unit 206, a printing unit 209, and a card reader 210.

As shown in FIG. 4, the settlement device 30 includes a CPU 301, a memory unit 302, a RAM 303, a scanner unit 304, a display unit 305, an operation unit 306, a communication unit 307, a buzzer 308, a printing unit 309, a settlement unit 310, a sign pole 311, a human detection sensor 312, and a card reader 313. These can communicate with each other via a bus.

The CPU 301 is a central processing unit, and controls the operation of the settlement device 30 by reading and executing programs stored in the memory unit 302 .
The storage unit 302 is an auxiliary storage device for the CPU 301, and stores various types of information used by the CPU 301, including programs.

The RAM 303 is a main storage device for the CPU 301 and stores various information therein. For example, the RAM 303 stores the product master acquired from the management device 10 and the registration data acquired from the registration device 20.
The scanner unit 304 optically reads, for example, a code (a barcode or a two-dimensional code) printed on a bill or a code (a membership code) attached to a membership card or the like.

The display unit 305 is a touch panel (e.g., a liquid crystal touch panel) that displays various information. For example, the display unit 305 displays a settlement screen on which the total amount is displayed, etc.

The operation unit 306 has various operation buttons (such as a correction key and a preset key) for operating the settlement device 30. For example, the operation unit 306 accepts corrections to operation inputs by operating an operation button (correction key).

The communication unit 307 communicates with other devices via the LAN 11 .
When an error or the like occurs, the buzzer 308 generates a buzzer sound to notify the user of the error.
The printing unit 309 prints and issues media. For example, when the payment process (i.e., the payment of the purchase amount of the products) is completed, the printing unit 309 prints and issues a payment-completed receipt for the customer to take home.

The settlement unit 310 performs processing related to settlement (clearance). In this embodiment, the settlement unit 310 can handle at least one of the following types of settlement: cash settlement, credit card settlement, and electronic money settlement.
To accommodate payment in cash, the settlement unit 310 is equipped with a change machine. The change machine is equipped with a banknote insertion port for inserting and ejecting banknotes, a coin insertion port for inserting coins, and a change ejection port for ejecting change. The settlement unit 310 executes payment in cash using the change machine, and outputs the result of the execution of the payment (for example, information indicating whether the payment has been established) to the CPU 301 via the bus.
Furthermore, in the case where payment is made by credit card, the payment section 310 is provided with a credit card reader and performs settlement processing using information read by the credit card reader.
Furthermore, in the case where payment is made using electronic money, the settlement unit 310 is provided with an electronic money reader and performs settlement processing using information read by the electronic money reader.

The sign pole 311 has indicator lights of multiple colors, and by turning on or blinking these indicator lights, it notifies the user that the settlement device 30 is the device designated by the store clerk or that it can be operated.
The human detection sensor 312 is a sensor that detects the presence of a person (customer) within a specified range in front of the settlement device 30.

The card reader 313 is a device that reads information from an RFID tag in the form of an IC card, for example.

Figure 2 shows the external configuration of the settlement device 30, which includes a scanner unit 304, a display unit 305, an operation unit 306, a printing unit 309, a settlement unit 310, a sign pole 311, and a card reader 313.

The POS system 1 of this embodiment, which is equipped with the registration device 20 and settlement device 30 as described above, is configured to be able to recall registration data. Recalling registration data means that after sending registration data to the settlement device 30, the settlement process that the settlement device 30 should execute based on the registration data is put on hold or stopped, and the transmitted registration data is returned to the registration device 20. Recalls are generally performed in response to, for example, canceling an item registered by the registration device 20 or registering an additional item for further purchases.

The recall operation performed by the store clerk to recall the registered data in this embodiment will be described below.
5 shows an example of a product registration screen displayed on the clerk display unit 205 of the registration device 20. Note that the settlement machine list button BT2 and the last call back button BT3 shown in the figure are arranged in accordance with the modified example described below, and therefore will not be described in this embodiment.
The product registration screen in the figure has a structure in which sheets (product registration sheets) showing product registration contents corresponding to each transaction are stacked. Each product registration sheet has a tab (product registration tab: an example of a heading area). In the figure, three product registration tabs TAB1-1, TAB1-2, and TAB1-3 are displayed. The product registration screen in the figure has a structure in which these three product registration sheets are stacked.
The product registration tabs TAB1-1, TAB1-2, and TAB1-3 display numbers indicating the registration order numbers. The registration order numbers indicate the order in which product registration was started. In the figure, the product registration tabs TAB1-1, TAB1-2, and TAB1-3 display registration order numbers "1,""2," and "3," respectively. This indicates that the order in which product registration was started is the transaction corresponding to the product registration tab TAB1-1, followed by the transaction corresponding to the product registration tab TAB1-2, and then the transaction corresponding to the product registration tab TAB1-3.
In the following description, when there is no need to distinguish between the individual product registration tabs TAB1-1, TAB1-2, TAB1-3, etc., they will be referred to as product registration tab TAB1.

In this embodiment, the fact that three product registration tabs TAB1 are displayed as shown in the figure indicates that there are three transactions for which product registration has not yet been completed (product registration in progress) in the registration device 30. The store clerk can register the product for the corresponding transaction by operating the product registration sheet that is placed at the forefront among these three product registration sheets. The product registration for the transaction corresponding to the product registration sheet placed below the forefront is in a state where the product registration is pending.
By performing an operation (touch operation) on the product registration tab TAB1, the store clerk can move the product registration sheet with the operated product registration tab TAB1 to the front and perform product registration for the transaction corresponding to the product registration sheet moved to the front. In other words, the store clerk can select the product registration sheet corresponding to any one of multiple registered product transactions by operating the product registration tab TAB1 to be active, and perform product registration operation for the transaction corresponding to the active product registration sheet.

In the figure, a product registration sheet with a product registration tab TAB1-1 is shown in an active state. In the active product registration sheet, a product button area AR10 is arranged. In the product button area AR10, a product button corresponding to each product is arranged. For example, the product name indicating the corresponding product is displayed on the product button.
In the product registration operation, the sales clerk can specify the product to be registered by operating the product button. Specifically, if the sales clerk wants to specify a product with the product name "Product B" as the product to be registered, the sales clerk can operate the product button labeled "Product B" among the product buttons arranged in the product button area AR10. By operating the product button for "Product B,""ProductB" is specified as the product to be registered. Next, the sales clerk can perform an operation to input, for example, the quantity of "Product B." The sales clerk can register products sequentially by performing the above operations for each purchased product.

The product registration sheet in the figure shows that two products have been registered at the current stage. Specifically, the registered product list area AR11 of the product registration sheet in the figure shows that two products have been registered in that order: "Product A" and "Product B". The registered product area AR12 shows information about "Product B", which was registered last. The total amount area AR13 shows that the total number of products registered so far is "2", and that the total amount of these two products is 1,900 yen.

Furthermore, on the product registration screen, settlement device designation buttons BT1-1 and BT1-2 are arranged. The settlement device designation buttons BT1-1 and BT1-2 correspond to the settlement devices 30-1 and 30-2, respectively, and are buttons for performing an operation to designate the settlement device 30 that will execute the settlement process (a settlement device designation operation).
In addition, when there is no particular distinction between the settlement device designation buttons BT1-1 and BT1-2, they will be described as settlement device designation button BT1.

The settlement device designation button BT1 shows the current status of the corresponding settlement device 30. In the figure, a badge displaying "Waiting" is placed on the settlement device designation button BT1-1. The state of this settlement device designation button BT1-1 indicates that the settlement device 30-1 is waiting for the start of settlement processing. In other words, the settlement device 30-1 at this time does not store any unprocessed registered data, and is waiting to receive new registered data.
Furthermore, a badge displaying "In Use" is placed on the settlement device designation button BT1-2, and a lane is drawn around the letters "Settlement Machine 2" on the settlement device designation button BT1-2. This state of the settlement device designation button BT1-2 indicates that the settlement device 30-2 is in a state where settlement processing based on the acquired registered data has not been completed (an example of an in-use state). A state where settlement processing has not been completed refers to a state where settlement processing has been started with the acquired registered data as the processing target but the settlement processing has not yet been completed, or a state where registration data has been acquired from the registration device 20, but settlement processing with the acquired registered data as the processing target has not yet been started.
In addition, depending on the state of the settlement device 30 as described above, for example, the color, pattern, etc. of the settlement device designation button BT1 itself may be displayed so as to change.

For example, when the operation of registering all products for a transaction corresponding to the product registration sheet with the product registration tab TAB1-1 in the figure is completed, the store clerk selects the settlement device 30 that will execute the settlement process based on the registration data corresponding to that transaction. At this time, by looking at the settlement device designation button BT1, the store clerk can see that settlement device 30-1 is on standby and settlement device 30-2 is in use.

In this embodiment, an example is given in which the upper limit of the number of registration data that the settlement device 30 can accept is "1". Therefore, even if new registration data is transmitted from the registration device 20 while the settlement device 30 is executing settlement processing based on one registration data received from the registration device 20, the settlement device 30 will not accept the transmitted registration data as a processing target.

In this case, settlement device 30-1 is in use, so registration data cannot be sent to settlement device 30-1. Meanwhile, settlement device 30-2 is in a standby state. In a standby state, settlement device 30-2 can accept registration data that has been sent. Therefore, in this case, the store clerk selects settlement device 30-2 as the settlement device 30 that will execute the settlement process. Then, as a settlement device designation operation, the store clerk operates the settlement device designation button BT1-2 that corresponds to settlement device 30-2.

In response to an operation performed on the settlement device designation button BT1-2 as a settlement device designation operation, the registration device 20 transmits registration data for the transaction corresponding to the product registration sheet with the product registration tab TAB1-1 to the settlement device 30-2 and instructs the settlement processing.
In response to the transmission of the registration data to the settlement device 30-2 as described above, the product registration sheet with the product registration tab TAB1-1 displayed on the registration device 20 up until now may be erased from the product registration screen. Instead, a product registration sheet with, for example, the product registration tab TAB1-2 may be displayed in the foreground.
In addition, when the product registration sheet with the product registration tab TAB1-2 is displayed in the foreground in this manner, the registration order number displayed in the product registration tab TAB1-2 advances from "2" to "1," and the registration order number displayed in the product registration tab TAB1-2 advances from "3" to "2."

The recall operation in this embodiment includes an operation on the settlement device designation button BT1 located on the above-mentioned product registration screen. That is, the settlement device designation button BT1 in this embodiment is used to designate the settlement device 30 that will execute the above-mentioned settlement process, as well as to select the settlement device 30 to which the registration data to be recalled is to be sent.

A specific example of the recall operation in the state of the product registration screen in the figure is as follows.
In the state of the product registration screen in the figure, the settlement device 30-2 is in an unfinished state (during settlement processing, or before settlement processing has started) for the registration data transmitted from the registration device 20. Then, a store clerk receives a request to register additional products or cancel some of the registered products from a customer of a transaction corresponding to the registration data currently being processed by the settlement device 30-2.
The store clerk who receives the request operates the settlement device designation button BT1-2 corresponding to the settlement device 30-2 to which the registration data is to be sent, in order to correct the corresponding registration data.
Here, the settlement device designation button BT1-2 in the figure is shown to be in the "in use" state. In this embodiment, the operation on the settlement device designation button BT1 in the "in use" state is one operation included in the recall operation, and is an operation to select the settlement device 30 to which the registration data to be recalled is output (recall target selection operation). In the example of the figure, the settlement device designation button BT1-1 indicates "standby" (waiting), and the settlement device designation button BT1-2 indicates "in use". For this reason, the settlement device designation button BT1-2 is the only option for the recall target selection operation. However, for example, if both the settlement device designation buttons BT1-1 and BT1-2 indicate "in use", both the settlement device designation buttons BT1-1 and BT1-2 are options for the recall target selection operation.

In response to the recall target selection operation being performed using the settlement device designation button BT1-2 as described above, a recall confirmation dialogue box is displayed so as to be superimposed on the product registration screen.
The recall confirmation dialog box is a dialog box for confirming with the store clerk whether or not to execute the recall process. Although not shown in the figure, the recall confirmation dialog box displays a message prompting the store clerk to confirm whether or not to execute the recall of the registered data from the settlement device 30 selected by the store clerk through the recall target selection operation.
In addition, the recall confirmation dialogue box may have, for example, a "Yes" button and a "No" button. The "Yes" button is a button that the store clerk operates when instructing the execution of the recall of the registered data. The "No" button is a button that the store clerk operates when canceling the execution of the recall of the registered data.

When the store clerk sees the recall confirmation dialogue box displayed, if the clerk determines that the settlement device 30 selected by the recall target selection operation is correct and that it is OK to perform the recall, he or she presses the "Yes" button (recall instruction operation).
In response to the above-mentioned recall instruction operation being performed, the registration device 20 executes the recall process. That is, in this case, the registration device 20 transmits a request to return the registered data to the settlement device 30-2 corresponding to the settlement device designation button BT1-2 where the recall target selection operation was performed. In response to receiving the return request, the settlement device 30-2 transmits the registered data that has not yet been processed to the registration device 20 that sent the return request. The settlement device 30-2 deletes the registered data transmitted in response to the return request, or excludes it from the settlement process. In this way, the registration data transmitted to be returned from the settlement device 30 is received by the registration device 20, thereby performing the recall.

The registration device 20, which has acquired the registration data recalled from the settlement device 30 as described above, uses the recalled registration data to display a transaction correction screen. The store clerk can make corrections such as adding products or canceling some of the products by operating the transaction correction screen. When the correction is complete, the registration device 20 transmits the registration data reflecting the corrected contents to the settlement device 30 that sent the recalled registration data. The settlement device 30 starts settlement processing based on the newly received registration data.
The registration data may be automatically transmitted to the settlement device 30 by the registration device 20, or may be transmitted in response to a transmission instruction operation by a store clerk. The destination settlement device 30 may be the settlement device 30 that transmitted the recalled registration data, or may be determined by the registration device 20 in response to an instruction operation of the settlement device by the store clerk, the status of the settlement device 30, etc.

On the other hand, if, for example, due to an operational error, the store clerk mistakenly selects the item to be recalled (operating the ``in use'' settlement device designation button BT1), or if the customer withdraws their request to correct the transaction when the recall confirmation dialog box is displayed, the store clerk can simply operate the ``No'' button in the recall confirmation dialog box.
In response to the operation of the "No" button, the registration device 20 closes the recall confirmation dialog box and returns the product registration screen to the state before the recall confirmation dialog box was displayed.

In the above-described recall operation, the store clerk can specify the settlement device 30 to which the registered data is to be recalled by operating the settlement device designation button BT1, which indicates the "in use" status. In other words, in the recall operation of this embodiment, the store clerk can declare the recall of registered data and specify the registered data to be recalled by operating the settlement device designation button BT1, which indicates the "in use" status.
This eliminates the need for the store clerk to perform, as a recall operation, for example, an operation of displaying an unsettled list screen showing a list of transactions corresponding to registration data for which processing has not been completed, and an operation of selecting the transaction to be corrected from the displayed unsettled list screen. In other words, in this embodiment, the operational procedure performed by the store clerk as a recall operation is simplified, and the recall operation is performed efficiently.

An example of a process procedure executed by the registration device 20 in this embodiment in relation to a recall will be described with reference to the flowchart of FIG.
Step S101: With the product registration screen displayed, the registration device 20 waits for an operation to be performed on the settlement device designation button BT1 indicating the "in use" state. In other words, the registration device 20 waits for a recall target selection operation to be performed.
Step S102: In response to the recall target selection operation, the registration device 20 controls the store clerk display unit 205 to display a recall confirmation dialogue box superimposed on the product registration screen.
Step S103: While the recall confirmation dialog box is displayed, the registration device 20 determines whether or not an operation has been performed on the "Yes" button arranged in the recall confirmation dialog box, i.e., whether or not a recall instruction operation has been performed.

Step S104: When a recall instruction operation is performed, the registration device 20 performs a process of recalling the registration data.
In other words, the registration device 20 transmits a request for return of the registration data to the settlement device 30 selected by the recall target selection operation in step S101, and receives the registration data transmitted from the settlement device 30 in response to the return request.
Step S105: Having acquired the registration data through the recall process in step S104, the registration device 20 closes the recall confirmation dialog box displayed in step S102.
Step S106: The registration device 20 also uses the recalled registration data to display a transaction correction screen. After displaying the transaction correction screen, the registration device 20 can change the contents of the recalled registration data in response to an operation for correcting a transaction (such as adding a product or canceling a part of a product) performed on the transaction correction screen, and transmit the changed registration data to the settlement device 30 to instruct settlement processing.

Step S107: On the other hand, if the "No" button located in the call back confirmation dialog box is operated to cancel the call back declaration, the registration device 20 determines that the call back instruction operation was not performed in step S103. In this case, the registration device 20 erases the call back confirmation dialog box displayed in step S102, and returns the display on the store clerk display unit 205 to the state of the product registration screen with the contents before the call back confirmation dialog box was displayed.

Second Embodiment
Next, a second embodiment will be described. An example of a recall operation in this embodiment will be described with reference to Fig. 7. This figure shows an area where the product registration tab TAB1 is displayed on the product registration screen of this embodiment. Note that the other areas of the product registration screen of this embodiment other than those shown in Fig. 5 may be the same as those shown in Fig. 5.

In the registration device 20 of this embodiment, the operation of registering a commodity corresponding to one transaction and the settlement device designation operation (operation on the settlement device designation button BT1 indicating the “standby” state) performed upon completion of the registration of a commodity in one transaction may be similar to that of the first embodiment.
Furthermore, in this embodiment, in response to a settlement device designation operation being performed, a settlement tab (an example of a heading area) indicating that the settlement device 30 designated by the settlement device designation operation is in use is displayed on the product registration screen.

7 shows an example of the display of the payment tabs, in which one product registration tab TAB1-1 and two payment tabs TAB2-1 and TAB2-2 are displayed.
As described in the first embodiment above, the product registration tab TAB1-1 is a tab attached to a product registration sheet corresponding to a transaction in which a product is being registered in the registration device 20. In the example shown in the figure, the product registration tab TAB1-1 is selected, and the product registration sheet to which the product registration tab TAB1-1 is attached is displayed in the foreground.
For example, from the state shown in the figure, if an operation is performed to put on hold the product registration of the transaction corresponding to the product registration tab TAB1-1 and to register a product for another transaction, in addition to the product registration tab TAB1-1, settlement tabs TAB2-1, and TAB2-2 shown in the figure, a product registration tab TAB1 corresponding to the other transaction will be displayed.

The settlement tab TAB2-1 shows that the settlement device 30-1 is in use, as the guide display GD of "Settlement Machine 1" indicating the settlement device 30-1 is displayed. Also, the settlement tab TAB2-2 shows that the settlement device 30-2 is in use, as the guide display GD of "Settlement Machine 2" indicating the settlement device 30-2 is displayed. That is, the example in the figure shows that both the settlement devices 30-1 and 30-2 are currently in use.
In the following description, when there is no need to distinguish between the individual settlement tabs TAB2-1, TAB2-2, etc., they will be referred to as settlement tab TAB2.

The settlement tab TAB2 displayed as above will be erased when the settlement process in the corresponding settlement device 30 is completed.

In this embodiment, when performing a recall operation to recall registered data, the store clerk first operates the settlement tab TAB2 corresponding to the settlement device 30 that was the destination of the registered data to be recalled. Specifically, in the example shown in the figure, when the store clerk is trying to recall registered data from settlement device 30-1, the store clerk operates the settlement tab TAB2-1 corresponding to settlement device 30-1. When the store clerk is trying to recall registered data from settlement device 30-2, the store clerk operates the settlement tab TAB2-2 corresponding to settlement device 30-2.
That is, in this embodiment, an operation for selecting an object to be recalled (declaration of recall of registered data and specification of registered data to be recalled) is performed by an operation on the settlement tab TAB2.

In response to an operation on the settlement tab TAB2, a call back confirmation dialogue box is displayed on the store clerk display unit 205 so as to be superimposed on the product registration screen. The display format of the call back confirmation dialogue box may be the same as that of the first embodiment. Therefore, the call back confirmation dialogue box of this embodiment also displays a confirmation message and has a "Yes" button and a "No" button.
If the store clerk wishes to recall the registered data, he or she operates the "Yes" button (recall instruction operation). In response to the recall instruction operation, the registration device 20 executes the recall process as in the first embodiment, displays a transaction correction screen using the recalled registered data, and handles the correction of the transaction.
On the other hand, if the store clerk wishes to cancel the recall of the registration data, he or she operates the "No" button. The registration device 20 then closes the recall confirmation dialogue box and returns to the state of the product registration screen before the recall confirmation dialogue box was displayed.

As in the first embodiment, with this type of recall operation, the store clerk does not need to perform the operations of displaying the unsettled list screen showing a list of transactions corresponding to the registered data for which processing has not yet been completed, and selecting the transaction to be corrected from the displayed unsettled list screen. This simplifies the operational procedure performed by the store clerk as a recall operation, and the recall operation is performed efficiently.

According to the above explanation, in this embodiment, there is no particular need for the sheet with the settlement tab TAB2 to be moved to the forefront and displayed on the product registration screen. For this reason, the sheet with the settlement tab TAB2 does not need to include significant information like the product registration sheet. Specifically, the settlement tab TAB2 may be accompanied by a sheet with only the background, for example. Alternatively, only the settlement tab TAB2 may be displayed and no sheet may be attached to the settlement tab TAB2.

Alternatively, as a variation of this embodiment, a sheet with the settlement tab TAB2 may be configured to display a transaction correction screen based on the recalled registered data when the registered data from the corresponding settlement device 30 is recalled.
In this case, the following display may be made in response to an operation on the "Yes" button in the recall confirmation dialog box (recall instruction operation) following an operation on the settlement tab TAB2 (recall target selection operation). In other words, the sheet with the settlement tab TAB2 attached may be moved to the front, and a transaction correction screen based on the recalled registered data may be displayed on the frontmost sheet.

An example of a process procedure executed by the registration device 20 of the present embodiment in relation to displaying the settlement tab will be described with reference to the flowchart of FIG.
First, an example of a process procedure executed by the registration device 20 in relation to starting the display of the settlement tab TAB2 will be described.
Step S201: The registration device 20 waits for a settlement device designation operation (operation on the settlement device designation button BT1 indicating "standby") to be performed.
Step S202: In response to the store clerk performing a settlement device designation operation in response to the completion of registration of a product corresponding to one transaction, the registration device 20 transmits registration data corresponding to one transaction in which registration of the product has been completed to the settlement device 30 designated by the settlement device designation operation.
Step S203: The registration device 20 also displays a settlement tab TAB2 on the product registration screen, which indicates that the settlement device 30 to which the registration data was sent in step S202 is "in use."

Next, with reference to the same figure, an example of a processing procedure executed by the registration device 20 in relation to erasing the displayed settlement tab TAB2 will be described.
Step S301: The registration device 20 waits for the settlement process corresponding to one transaction to be completed in the settlement device 30. Each time the settlement process corresponding to one transaction is completed, the settlement device 30 transmits a notice to that effect (a settlement process completion notice) to the registration device 20. When the settlement process completion notice is received, the registration device 20 can determine that the settlement process has been completed in the settlement device 30 to which the received settlement process completion notice was sent.
Step S302: When the registration device 20 determines that the settlement process has been completed at the settlement device 30, it erases the settlement tab TAB2 corresponding to the settlement device 30 for which the settlement process has been completed from the product registration screen.

Next, an example of a process performed by the registration device 20 in relation to recalling registration data will be described with reference to a flowchart of FIG.
Step S401: The registration device 20 waits for an operation on any of the payment tabs TAB2 displayed on the product registration screen, that is, for an operation to select a recall target.
Step S402: In response to the recall target selection operation, the registration device 20 controls so that a recall confirmation dialogue box is displayed superimposed on the product registration screen.
Step S403: While the recall confirmation dialog box is displayed, the registration device 20 determines whether or not an operation (recall instruction operation) has been performed on the "Yes" button located in the recall confirmation dialog box.

Step S404: When a recall instruction operation is performed, the registration device 20 performs a process of recalling the registration data.
Step S405: The registration device 20, which has acquired the registration data by the recall process in step S404, erases the recall confirmation dialog box displayed in step S402. In addition, as a result of the registration data being recalled, the settlement device 30 that sent the registration data to be recalled changes from a "in use" state to a settlement process pending or "standby" state. Therefore, the registration device 20 also erases the settlement tab TAB2 on which the operation corresponding to step S401 was performed.
Step S406: The registration device 20 displays a transaction correction screen using the recalled registration data.

Step S407: On the other hand, if an operation is performed on the "No" button located in the callback confirmation dialog box, the registration device 20 determines that a callback instruction operation was not performed in step S403, and closes the callback confirmation dialog box displayed in step S402.

Third Embodiment
Next, a third embodiment will be described. In the following description of this embodiment, reference will be made to FIG.
In the product registration screen of this embodiment, settlement tabs TAB2-1 and TAB2-2 corresponding to the settlement devices 30-1 and 30-2 are constantly displayed.
In this embodiment, the display mode of the settlement tab TAB2 is changed according to the state of the corresponding settlement device. That is, when the corresponding settlement device 30 is in a "standby" state, the settlement tab TAB2 is displayed in a predetermined mode corresponding to this state, and when in a standby "in use" state, the settlement tab TAB2 is displayed in a predetermined mode corresponding to this state. By changing the display mode in this way, the settlement tab TAB2 can show the current state of the corresponding settlement device 30, such as whether it is on standby or in use.

Then, in this embodiment, as a settlement device designation operation performed in response to the completion of product registration, an operation is performed on the settlement tab TAB2 indicating the "standby" state. As a specific example, when a store clerk completes the registration of products for one transaction, the store clerk checks the state of the settlement tab TAB2 to confirm that the settlement device 30 is in the "standby" state. In this case, since the settlement tab TAB2-1 corresponding to settlement device 30-1 was in the standby state, the store clerk decided that the settlement device 30 that will execute the settlement process is settlement device 30-1. In this case, the store clerk performs an operation on the settlement tab TAB2-1 corresponding to settlement device 30-1 among the settlement tabs TAB2.
In this way, in response to a settlement device designation operation being performed on the settlement tab TAB2-1 in the "standby" state, the registration device 20 transmits registration data corresponding to the product registration for the current transaction to the settlement device 30-1 corresponding to the settlement tab TAB2-1 that was operated.
In response to the transmission of the registration data, the settlement tab TAB2-1 on which the operation as the settlement device designation operation has been performed changes from a state indicating the previous "standby" state to a state indicating "in use."

According to the above description, in this embodiment, the settlement device can be designated by operating the settlement tab TAB2. In addition, in this embodiment, the status of each settlement device 30 is also shown by the display mode of the settlement tab TAB2. For this reason, in this embodiment, for example, the settlement device designation button BT1 located on the product registration screen of FIG. 5 may be omitted.

In addition, in this embodiment, the registered data can be recalled by operating the settlement tab TAB2, which indicates the "in use" state.
As a specific example, when a customer of a transaction corresponding to the registration data currently being processed by settlement device 30-1 requests correction of the product registration details, such as registering additional products or canceling some of the registered products, the following occurs.
When a request to correct the registered details is received, the settlement tab TAB2-1 corresponding to the settlement device 30-1 indicates the "in use" state and is in a state where it can accept the recall target selection operation. Therefore, in this case, the store clerk operates the settlement tab TAB2-1 to recall the registered data corresponding to the customer who requested the correction of the product registration details.
In this embodiment, in response to an operation on the settlement tab TAB2-1, a recall confirmation dialog box is displayed in the same manner as in the second embodiment. The store clerk performs a recall instruction operation by operating the "Yes" button in the recall confirmation dialog box, causing the registration device 20 to recall the registered data from the settlement device 30-1. When the registered data is recalled, a transaction correction screen is displayed, and the store clerk can perform an operation to change the registered contents of the product.

<Modification>
A modification of this embodiment will now be described.
[First Modification]
In the above-described embodiment, when there are multiple sheets with tabs, the sheets are arranged so as to be stacked. However, for example, the multiple sheets may be arranged one by one in a planar direction so that they can be simultaneously viewed on the screen.

[Second Modification]
The transmission of registration data from the registration device 20 to the settlement device 30 in response to the settlement device designation operation may be performed via another information processing device such as the management device 10. Similarly, the transmission and reception of information between the registration device 20 and the settlement device 30 regarding the recall of registration data may also be performed via another information processing device.

[Third Modification]
In each of the above embodiments, the recall operation is performed to recall the registration data corresponding to the registration device 20. In other words, the registration data that one registration device 20 can recall is the registration data that it has performed the product registration process and transmitted to the settlement device 30, and the registration data that another registration device 20 has performed the product registration process and transmitted to the settlement device 30 is not recalled.
However, a recall operation for one registration device 20 may be configured to recall to the one registration device not only the registration data transmitted to the settlement device 30 by that one registration device, but also the registration data transmitted to the settlement device 30 by other registration devices 20. This allows a store clerk to recall the registration data on the spot and correct it in response to a request from a customer who has registered a product on a registration device other than the one he or she operates.

In this modified example, a payment machine list button BT2 may be arranged on the product registration screen as shown in Fig. 5. When the store clerk wishes to recall registration data corresponding to a registration device 20 other than the registration device 20 that the store clerk is operating, the store clerk operates the payment machine list button BT2.
In response to the operation of the settlement machine list button BT2, the registration device 20 displays a list of settlement device designation buttons (settlement machine list screen) corresponding to each of the other registration devices 20. The settlement device designation buttons displayed on the settlement machine list screen also show the current status of the corresponding settlement device 30. That is, if the settlement device is on standby, a "standby" badge is displayed, and if the registration data has been received but the settlement process has not been completed, a "in use" badge is displayed. Looking at such a settlement machine list screen, the store clerk operates the settlement device designation button corresponding to the registration data that needs to be corrected. In response to the operation of the settlement device designation button, the corresponding registration data is transmitted from the designated settlement device 20 to the registration device 20 operated by the store clerk. The registration device 20 displays a transaction correction screen based on the received registration data. The store clerk can correct the registration data by operating the displayed transaction correction screen. In this way, one registration device 20 can recall and correct the registration data corresponding to the other registration devices 20.

The above example corresponds to the case where this modified example is applied to the first embodiment. In contrast, when this modified example is applied to the second or third embodiment, the corresponding settlement tab TAB2 can be displayed for each of the other registration devices 20 in response to the operation of the settlement machine list button BT2. By operating the settlement tab TAB2 corresponding to the registered data that needs to be corrected from among the displayed settlement tabs TAB2, the store clerk can display the transaction correction screen for the registered data that needs to be corrected on the registration device 20 that he or she is operating, and correct the registered data.

[Fourth Modification]
A registered machine list button (not shown) may be arranged on the product registration screen. When the clerk operates the registered machine list button, a registered machine list screen showing a list of other registration devices 20 is displayed. The clerk operates the registration device designation button that performed the product registration corresponding to the registration data to be corrected, among the registration device designation buttons corresponding to the other registration devices 20 presented on the displayed registered machine list screen. In response to the operation of the registration device designation button, a settlement machine list screen corresponding to each of the other registration devices 20 is displayed, for example, as in the third modified example above. The clerk operates the settlement device designation button corresponding to the registration data to be corrected, among the settlement device designation buttons presented on the settlement machine list screen, to display a transaction correction screen, and can perform correction operations on the transaction correction screen.

[Fifth Modification]
In addition, a store clerk may perform an operation to select another store clerk (operator) operating another registration device 20, so that the registration data transmitted to the settlement device 30 by the other registration device 20 operated by the selected other store clerk can be recalled to the registration device 20 operated by the store clerk and corrected.

[Sixth Modification]
Furthermore, a button for recalling registered data may be provided on the product registration screen in correspondence with a transaction (last transaction) for which product registration has been completed at the registration device 20 but settlement has not been completed at the settlement device 30. As an example of such a button, Fig. 5 shows a Last Recall button BT3. If the transaction for which a correction has been requested is the last transaction corresponding to the registration device 20 that the store clerk operates, the Last Recall button BT3. In response to the operation of the Last Recall button BT3, the registration device 20 recalls the registered data corresponding to the last transaction and displays a transaction correction screen.
The recall refers to registration data that has been transmitted from the registration device 20 to the settlement device 30 and that has not been processed by the settlement device 30. For this reason, recall is often performed for the transaction in which product registration was last completed by the registration device 20, i.e., the immediately preceding transaction. Thus, by making it possible to recall registration data corresponding to the immediately preceding transaction with a single button operation, as in this modified example, the efficiency of the recall operation is improved.

[Seventh Modification]
The recall operation may be prohibited if, after the settlement device 30 transmits the registration data to be corrected, a product corresponding to a new transaction is being registered (for example, a subtotal operation has not yet been performed since the product registration started). This prevents the product registration of a new transaction from being interrupted, thereby reducing the possibility of an operational error by a store clerk when registering products for a new transaction.

[Eighth Modification]
For example, when a customer has put purchased items in two baskets and is receiving product registration, the store clerk may mistakenly believe that the product registration for one transaction has been completed for the first basket, and may perform a settlement device selection operation when the registration of the first basket is completed, only to later realize that there was a second basket. In response to such a case, for example, when a recall is performed, the store clerk may be allowed to select whether or not to combine the transaction currently being registered with the transaction corresponding to the registration data to be corrected.
In this case, if an operation to select the sum is performed, the registration device 20 executes a correction to the recalled registration data by integrating the results of the current product registration process. In other words, in this case, for example, the transactions of the first basket and the transactions of the second basket can be integrated into one transaction.
As an example, when the same customer purchases two baskets and receives product registration, the first basket contains two products, product A and product B. The clerk completes the registration of the two products, product A and product B, in the same manner as in the example of FIG. 5 for the first basket, performs a settlement device designation operation, and transmits the registration data to the settlement device 30. After this, the clerk realizes that the transaction for which product registration is currently being performed is a transaction for the same customer as the transaction for which product registration was completed immediately before when the clerk completes the registration of products C and D among the products in the second basket for the same customer. In this case, the clerk performs an operation to recall the registration data corresponding to the first basket from the settlement device 30. The registration device 20 displays a correction screen for the recalled registration data. The clerk performs an operation on the correction screen to select the integration of the registration contents corresponding to the transaction for the second basket currently being registered with the registration data to be corrected (i.e., the transaction corresponding to the first basket). In response to the operation, the registration device 20 executes a process for correcting the transaction by integrating information about the product currently registered in the registration data to be corrected, corresponding to the transaction currently being registered, into product registration data corresponding to one transaction. After executing such a correction process, the registration device 20 displays a product registration screen reflecting the integrated product registration data.

10 shows a product registration screen on which the integrated product registration data in the above example is reflected. In the product registration screen in the figure, the integrated product registration data is reflected as follows. That is, the registered product list area AR11 shows that, as a result of the registration of products up to now, following the first "product A" and the second "product B" corresponding to the first basket, "product C" has been registered as the third product corresponding to the second basket, and "product D" has been registered as the fourth product.
In addition, as shown in the figure, in the registered product list area AR11, the display mode may be changed, for example by using different background colors, between the items of the products corresponding to the registration data to be corrected recalled from the settlement device 30 (i.e., the products registered corresponding to the first basket) and the items of the products registered under the transaction in which the products are being registered (i.e., the products registered corresponding to the second basket). By changing the display mode in this way, the store clerk can easily distinguish between the products corresponding to the registration data recalled from the settlement device 30 and the products that have been registered so far under the transaction in which the products are being registered.
In the example shown in the figure, the order of the product items in the registered product list area AR11 is the order of the product registered corresponding to the first basket, the product registered corresponding to the second basket, and so on, following the chronological order (oldest first) of the transactions in which the products were registered. However, the order of the product items in the registered product list area AR11 may be the opposite to the above, following the order of the most recent transactions in which the products were registered, such as the product registered corresponding to the second basket, the product registered corresponding to the first basket, and so on. In this case, the product items may be arranged so that the order of product registration through the first and second baskets is reversed, or the order of the group of products registered corresponding to the first basket and the group of products registered corresponding to the second basket may be reversed, and the order of the product items in each group may be arranged according to the registration order.
The registered product area AR12 shows information about the last registered product, "Product D." The total amount area AR13 shows that the total number of products registered so far is "4," and that the total amount of these four products is 3,000 yen.
With the product registration screen of the figure displayed, the store clerk can further register unregistered products in the second basket. As a result, when the registration of the products in the second basket is completed, product registration data is obtained in which the products in the first basket and the products in the second basket are combined into one transaction. Then, the registration data including this product registration data is processed by the settlement device 30, so that the customer can settle the purchases in the first and second baskets as one transaction.

[Ninth Modification]
In each of the above embodiments, the manner in which a settlement device 30 that will execute the settlement process is designated from among the multiple settlement devices 30 includes a manner in which a store clerk designates the settlement device 30 that will execute the settlement process using the registration device 20 (first designation manner), and a manner in which a settlement receipt to be handed to a customer is issued from the registration device 20, and the customer has one settlement device 30 read the settlement receipt handed to them by the store clerk (second designation manner). However, the manner in which a settlement device 30 is designated is not limited to the above-mentioned manner. For example, the settlement device 30 may be designated as follows.
In one embodiment, in response to an operation performed on a send button displayed on the store clerk display unit 205 upon completion of product registration (or an operation that declares completion of product registration), the registration device 20, for example, inquires about the status of the settlement devices 30 to recognize settlement devices 30 that are capable of settlement processing (for example, no failures have occurred and the settlement devices 30 are not in use), and selects one settlement device 30 from among the settlement devices 30 that are not in use according to a predetermined rule (for example, in order of settlement device number).The registration device 20 then transmits settlement information to the selected settlement device 30 and instructs it to execute settlement processing.
As another embodiment, a priority order for settlement processing is set in advance for the settlement devices 30. Then, in response to completion of product registration, the clerk display unit 205 displays a display that enables operation of a send button that instructs transmission of settlement information to the settlement device 30. In response to operation of the send button, the registration device 20 checks whether the settlement device 30 is capable of settlement processing in the order according to the set priority order, and if it is not confirmed that settlement processing is possible, it checks the settlement device 30 that is next in priority order. Then, the registration device 20 transmits settlement information to the settlement device 30 that was first confirmed to be capable of settlement processing, and instructs it to execute settlement processing.

<Overview of the embodiment>
As described above, one aspect of this embodiment is a product sales data processing system (e.g., POS system 1) comprising a registration device 20 in which products are registered, and a settlement device 30 in response to a customer's operation and which performs settlement processing based on registration data relating to the products registered by the registration device 20, and which is equipped with a display means for displaying an in-use indicator (e.g., a settlement device designation button BT1 or a settlement tab TAB2) indicating that the settlement device 30 is in use and has not yet completed settlement processing based on the acquired registration data, and a call-back control means for controlling the recall of registration data from the settlement device 30 in use to the registration device 20 in response to an operation on the in-use indicator.
According to the above configuration, when recalling registered data, for example, it is not necessary to perform an operation to display the unsettled transaction list screen and an operation to select the transaction to be corrected from the unsettled transaction list screen, and the operation procedure performed by the store clerk as the recall operation is simplified. This allows the registered data to be recalled efficiently.

Also, one aspect of this embodiment is the above-mentioned product sales data processing system, in which the display means displays a button (for example, a settlement device designation button BT1) indicating a settlement device that is in use as an in-use indication.
According to the above configuration, the recall operation can be performed on the button displayed to indicate a settlement device that is in use, making the recall operation easier.

Furthermore, one aspect of this embodiment is the above-mentioned product sales data processing system, in which the above-mentioned button is a settlement device designation button BT1 where a settlement device designation operation is performed to designate the settlement device 30 that will execute the settlement process, and the display means changes the settlement device designation button BT1 where the settlement device designation operation has been performed to a mode indicating that it is in use.
According to the above configuration, the settlement device designation button BT1, which is provided for the operation of designating the settlement device 30 that will execute the settlement process, can also be used for the operation of recalling. This makes it possible to provide an easy-to-operate operation screen.

Moreover, one aspect of this embodiment is the above-mentioned product sales data processing system, in which the display means, as an in-use indication, displays a settlement device 30 that is in use based on the registration data of the corresponding transaction in a heading area (e.g., settlement tab TAB2) corresponding to the sheet on a product registration screen that includes a sheet corresponding to each transaction.
According to the above configuration, an operation for recalling registered data can be performed on a tab attached to a sheet arranged corresponding to each transaction on the product registration screen.

Furthermore, one aspect of this embodiment is the above-mentioned product sales data processing system, in which, in response to a settlement instruction operation (e.g., a settlement device designation operation) that instructs a settlement process being performed on a product registration screen including a sheet to which a heading area corresponding to each settlement device 30 is associated, the display means changes the heading area in which the settlement instruction operation was performed to a state indicating that the corresponding settlement device 30 is in use, and the call-back control means controls the recall of registration data from the settlement device 30 in use to the registration device 20 in response to an operation on the in-use indication.
According to the above configuration, the settlement tab TAB2 corresponding to each settlement device is displayed, and the settlement tab TAB2 allows the store clerk to identify whether each settlement device 30 is in use or not. In addition, the settlement tab TAB2 can be operated to recall registered data.

One aspect of this embodiment is a registration device that includes a registration data output means for outputting registration data related to registered products to a settlement device 30 that performs settlement processing based on the registration data in response to a customer's operation, a display means for displaying an in-use indicator that indicates a settlement device that is in use and has not yet completed settlement processing based on the acquired registration data, and a recall control means for controlling the recall of the registration data from the settlement device in use to the registration device in response to an operation on the in-use indicator.

One aspect of this embodiment is a program for causing a computer of a product sales data processing system, which includes a registration device 20 where products are registered and a settlement device 30 that performs settlement processing based on registration data related to products registered by the registration device 20 in response to a customer's operation, to function as a display means for displaying an in-use indicator that indicates a settlement device that is in use and has not yet completed settlement processing based on the acquired registration data, and as a recall control means for controlling the recall of registration data from the settlement device 30 in use to the registration device 20 in response to an operation on the in-use indicator.

One aspect of this embodiment is a program for causing a computer acting as a registration device where products are registered to function as registration data output means for outputting registration data relating to registered products to a settlement device that performs settlement processing based on the registration data in response to a customer's operation, display means for displaying an in-use indicator that indicates a settlement device that is in use and has not yet completed settlement processing based on the acquired registration data, and recall control means for controlling the recall of registration data from the settlement device in use to the registration device in response to an operation on the in-use indicator.

In addition, a program for realizing the functions of the above-mentioned registration device 20 or settlement device 30 may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read into a computer system and executed to perform the processing of the above-mentioned registration device 20 or settlement device 30. Here, "reading a program recorded on a recording medium into a computer system and executing it" includes installing the program into a computer system. The "computer system" here includes hardware such as an OS and peripheral devices. In addition, the "computer system" may include multiple computer devices connected via a network including the Internet, WAN, LAN, dedicated lines, and other communication lines. In addition, the "computer-readable recording medium" refers to portable media such as flexible disks, optical magnetic disks, ROMs, and CD-ROMs, and storage devices such as hard disks built into a computer system. In this way, the recording medium storing the program may be a non-transient recording medium such as a CD-ROM. In addition, the recording medium also includes a recording medium provided inside or outside the computer that can be accessed from a distribution server in order to distribute the program. The code of the program stored in the recording medium of the distribution server may be different from the code of the program in a format executable by a terminal device. In other words, the format in which the program is stored on the distribution server does not matter as long as the program can be downloaded from the distribution server and installed in a form that can be executed on the terminal device. The program may be divided into multiple parts, each of which may be downloaded at a different time and then combined on the terminal device, or each of the divided programs may be distributed by a different distribution server. Furthermore, the term "computer-readable recording medium" includes a storage medium that holds a program for a certain period of time, such as a volatile memory (RAM) inside a computer system that becomes a server or client when a program is transmitted over a network. The program may also be a program that realizes part of the above-mentioned functions. Furthermore, the program may be a so-called difference file (difference program) that can realize the above-mentioned functions in combination with a program already stored in the computer system.

1 POS system, 10 Management device, 11 LAN, 20 Registration device, 30 (30-1, 30-2) Settlement device 301 CPU, 202 Memory unit, 203 RAM, 204 Scanner unit, 205 Display unit for store clerks, 205a Display unit for customers, 206 Operation unit, 207 Communication unit, 208 Buzzer, 209 Printing unit, 210 Card reader, 301 CPU, 302 Memory unit, 303 RAM, 304 Scanner unit, 305 Display unit, 306 Operation unit, 307 Communication unit, 308 Buzzer, 309 Printing unit, 310 Settlement unit, 311 Sign pole, 312 Human detection sensor, 313 Card reader

Claims (4)

A product sales data processing system including a registration device for registering products in response to an operation by a store clerk , and a payment device for performing a payment process in response to an operation by a customer based on registration data related to the products registered by the registration device,
The registration device includes a call-back control means for executing call-back control so that registration data is called back from the settlement device in use to the registration device;
a display control means for displaying a screen corresponding to an operation for registering a commodity, in such a manner that a first operator for causing the recall control means to recall the registration data of the immediately preceding transaction in which the commodity registration was last completed in the registration device in response to one operation being performed, and a second operator for performing an operation to specify the settlement device to be recalled;
A product sales data processing system comprising : a registration data output means for outputting registration data relating to the products registered in response to an operation by a store clerk to a payment device which performs a payment process based on the registration data in response to an operation by a customer ;
a recall control means for executing recall control so that the registration data is recalled from the settlement device in an in-use state where settlement processing based on the acquired registration data has not been completed to the registration device;
a display control means for displaying a screen corresponding to an operation for registering a commodity, in such a manner that a first operator for causing the recall control means to recall the registration data of the immediately preceding transaction in which the commodity registration was last completed in the registration device in response to one operation being performed, and a second operator for performing an operation to specify the settlement device to be recalled;
A registration device comprising : A computer as a registration device provided in a product sales data processing system including a registration device for registering products in response to an operation by a store clerk and a payment device for performing a payment process based on registration data related to the products registered by the registration device in response to an operation by a customer ,
a recall control means for executing recall control so as to recall registration data from the settlement device in a used state to the registration device ;
A display control means for displaying a screen corresponding to an operation for registering a commodity, in such a manner that a first operator, which causes the recall control means to recall the registration data of the immediately preceding transaction in which the commodity registration was last completed in the registration device in response to one operation being performed, and a second operator, which is used to perform an operation for designating a settlement device to be recalled, are arranged.
A program to function as a A computer as a registration device that registers products in response to operations by a store clerk ,
a registration data output means for outputting registration data relating to the registered products to a payment device which performs a payment process based on the registration data in response to an operation by a customer ;
a recall control means for executing recall control so as to recall the registration data from the settlement device in use where settlement processing based on the acquired registration data has not yet been completed to the registration device ;
A display control means for displaying a screen corresponding to an operation for registering a commodity, in such a manner that a first operator, which causes the recall control means to recall the registration data of the immediately preceding transaction in which the commodity registration was last completed in the registration device in response to one operation being performed, and a second operator, which is used to perform an operation for designating a settlement device to be recalled, are arranged.
A program to function as a

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