Product sales data processing device

Abstract

To ensure that item registration is made efficiently.SOLUTION: An item sales data processor includes: registration means for registering items corresponding to acquired item identification information; display means capable of displaying a quantity change screen for specifying the number of identical items to be registered; and control means for displaying the quantity change screen on the display means in response to registration of a predetermined plurality of identical items by the registration means.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a product sales data processing device. [Background technology]

[0002] BACKGROUND ART There is known a technology for a self-payment terminal (full self-checkout) in which a customer performs various operations for executing product sales data processing by himself / herself (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-205023 Summary of the Invention [Problem to be solved by the invention]

[0004] In a fully self-service product sales data processing device, the customer is required to perform an operation to register the products to be purchased, and it is preferable that product registration be performed efficiently.

[0005] The present invention has been made in view of the above circumstances, and has as its object to enable efficient product registration. [Means for solving the problem]

[0006] One aspect of the present invention for solving the above-mentioned problems is a product sales data processing device that includes a registration means for registering a product corresponding to acquired product identification information, a display means capable of displaying a quantity change screen for specifying the number of identical products to be registered, and a control means for causing the display means to display the quantity change screen in response to the registration of a predetermined number of identical products by the registration means. [Brief explanation of the drawings]

[0007] [Figure 1]1 is a network configuration diagram of a POS system according to an embodiment of the present invention. [Figure 2] 1 is a diagram illustrating an example of installation of a POS terminal according to an embodiment of the present invention. [Figure 3] 1 is a diagram illustrating an example of the appearance of a POS terminal according to an embodiment of the present invention. [Figure 4] FIG. 2 is a diagram illustrating an example of the configuration of a POS terminal according to the present embodiment. [Figure 5] FIG. 10 is a diagram showing an example of a product registration screen in the present embodiment. [Figure 6] FIG. 10 is a diagram showing an example of a quantity input screen in the present embodiment. [Figure 7] 10 is a flowchart illustrating an example of a processing procedure executed by a POS terminal in the present embodiment in relation to product registration. [Figure 8] FIG. 10 is a diagram showing an example of a quantity input screen in a first modified example of the embodiment. [Figure 9] FIG. 10 is a diagram showing an example of a quantity input screen in a second modified example of the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] <Embodiment> [POS system configuration example] Fig. 1 is a network configuration diagram of a POS (Point Of Sales) system according to one embodiment of the present invention. The POS system 1 shown in Fig. 1 includes three POS terminals 20-1, 20-2, and 20-3, a store controller 10, and a management device 30, all of which are communicatively connected via a LAN 11. Hereinafter, when there is no need to distinguish between the POS terminals 20-1, 20-2, and 20-3, they will be collectively referred to as the POS terminal 20.

[0009] The POS system 1 can be introduced into various stores, but the following description will be given taking as an example a case where the POS system 1 is introduced into a convenience store.

[0010] The store controller 10 is installed, for example, in the backroom of a store and stores a product master. The product master is information in which product information for each product sold in the store is registered. For example, when performing product registration processing, the POS terminal 20 uses information such as the product name and price of the product registered using the product master.

[0011] The management device 30 stores, for example, transaction results for the POS terminal 20. The management device 30 may also execute control to realize predetermined functions of the POS terminal 20 and the store controller 10. The management device 30 may be installed in the store, or may be provided as a cloud server outside the store.

[0012] Figure 2 is a diagram showing an example of installation of the POS terminal 20. Figure 2(A) is a perspective view of the POS terminal 20 etc. as seen from the customer side. Figure 2(B) is a perspective view of the POS terminal 20 etc. as seen from the store clerk side. As shown in Figure 2(A), a counter is placed to the right of the POS terminal 20 as seen from the customer side.

[0013] Fig. 3 is a diagram showing an example of the appearance of a POS terminal. Fig. 3(A) is a perspective view of the POS terminal 20 as seen from the customer side. Fig. 3(B) is a perspective view of the POS terminal 20 as seen from the store clerk side. Fig. 4 is a diagram showing an example of the configuration of the POS terminal 20. In Fig. 3 and Fig. 4, the same parts are given the same reference numerals.

[0014] An example of the configuration of the POS terminal 20 shown in Fig. 4 will be described below with reference to Fig. 2 and Fig. 3. The POS terminal 20 includes a CPU 201, a ROM 202, a RAM 203, a hard disk 204, a customer display unit 205, a customer scanner unit 206, a card reader 208, a change dispenser 209, a store clerk display unit 210, a key operation unit 211, a store clerk scanner unit 212, a printing unit 213, an audio output unit 214, a communication unit 215, an imaging unit 216, and a sign pole 217. These can communicate with each other via a bus.

[0015] The CPU 201 is a central processing unit that controls the operation of the POS terminal 20 by reading and executing programs stored in the ROM 202 . The ROM 202 is a read-only memory that stores various types of information used by the CPU 201, including programs.

[0016] The RAM 203 is a read / write memory that stores various information. For example, the RAM 203 stores information acquired from the outside (e.g., a product master acquired from the store controller 10) and information generated during processing (e.g., registration information generated during the registration process, settlement information generated during the settlement process, etc.). In the following description, either or both of the registration information and the settlement information may be referred to as transaction information.

[0017] The hard disk 204 stores various types of information. For example, the hard disk 204 may store programs executed by the CPU 201 instead of the ROM 202. Furthermore, the hard disk 204 may store information acquired from the outside or information generated during processing instead of the RAM 203. Instead of the hard disk 204, a storage device such as an SSD (Solid State Drive) may be provided.

[0018] The customer-side display unit 205 is a touch display for customers, which displays various information to customers and accepts various inputs from customers. The customer-side scanner unit 206 is a scanner unit for customer use, and optically reads, for example, barcodes (product codes, etc.) attached to products.

[0019] Although the customer-side scanner unit 206 is used when a customer registers a product, the customer may register the product by other methods. For example, if an order button for a product is displayed on the customer-side display unit 205, the customer can operate (press) the order button to register the product.

[0020] The card reader 208 is capable of reading information from various cards (credit cards, transportation cards, etc.) and executing processing corresponding to payment. The card reader 208 is also capable of reading information from membership cards, point cards, etc. The card reader 208 of this embodiment may include, for example, a card recognition unit (reading unit), a display unit, and an operation unit, but it is sufficient if it includes at least a card recognition unit.

[0021] The change machine 209 (cash settlement unit) is a cash settlement mechanism that has an input port for banknotes and coins and an output port for banknotes and coins, calculates the amount of money inserted into the input port, calculates the change amount, which is the difference between the input amount and the purchase amount, and dispenses the change from the output port.

[0022] The store clerk side display unit 210 is a touch display for the store clerk, and displays various information to the store clerk and receives various inputs from the store clerk. The key operation unit 211 is made up of various keys (buttons) and receives various inputs from the store clerk. The store clerk scanner unit 212 is a scanner unit for store clerks, and optically reads, for example, barcodes (product codes, etc.) attached to products and store clerk codes attached to store clerk name tags.

[0023] Although the clerk-side scanner unit 212 is used when the clerk registers a product, the clerk may register the product by other methods. For example, if a key corresponding to a product (such as a key corresponding to a sports newspaper) is arranged on the key operation unit 211, the clerk can operate (press) that key to register the product. Also, if a preset key corresponding to a product is displayed on the clerk-side display unit 210, the clerk can operate that preset key to register the product.

[0024] The printing unit 213 is a printing unit that ejects media, and prints and issues various media such as receipts. The printing unit 213 is a single printing unit that can be rotated to face from the store clerk side to the customer side, or from the customer side to the store clerk side (the direction of the media issuing port). The orientation of the printing unit 213 may be changed manually, or may be changed automatically (mechanically controlled, etc.) in response to, for example, a transition in operating mode. The correctness of the orientation of the printing unit 213 may be detected by a sensor or the like.

[0025] The audio output unit 214 outputs audio. For example, the audio output unit 214 outputs audio guidance and the like. The communication unit 215 transmits and receives information to and from other devices (other POS terminals 20, store controller 10).

[0026] The imaging unit 216 is provided to capture an image of a customer performing operations related to the transaction from a position adjacent to the customer. The captured image captured by the imaging unit 216 can be used as a monitoring image for monitoring the customer performing the transaction. The POS terminal 20 can also store the captured image captured by the imaging unit 216 in a storage device such as the hard disk 204.

[0027] The sign pole 217 is a part that lights up in a predetermined pattern and color to give a predetermined notification to store staff.

[0028] [Overview of each operation mode] Next, the operation modes of the POS terminal 20 will be described. The POS terminal 20 has a plurality of operation modes. Specifically, the POS terminal 20 has four operation modes (normal mode, full self-service mode, double scan mode, and semi-self-service mode). Note that the operation modes described below are operation modes related to accounting during normal business (operation modes related to product registration processing and settlement processing), and do not include a counting mode for counting and inquiring about sales and inventory, a maintenance mode for store clerks or maintenance personnel to perform setup and maintenance work, a training mode for training new employees, etc. In this embodiment, the term "accounting" is a concept that includes, for example, from product registration in one transaction to settlement (payment) of the registered product. In the following description, as a separate approach from the classification of the above-mentioned four operation modes, the mode in which the POS terminal 20 executes the product registration process may be referred to as the registration mode, and the mode in which the POS terminal 20 executes the settlement process may be referred to as the settlement mode.

[0029] [Normal mode] The normal mode is an operation mode in which the clerk side executes the registration process and the customer side executes the settlement process. That is, in the normal mode, the clerk side is in the registration mode and the customer side is in the settlement mode. In other words, the POS terminal 20 operates in the registration and settlement mode when viewed from the entire process from the registration process to the settlement process.

[0030] In the normal mode, the clerk registers the purchased items of the customer on the clerk side (clerk side scanner unit 212, clerk side display unit 210, key operation unit 211). In other words, the POS terminal 20 executes the registration process of the purchased items by the operation of the clerk (operation of the clerk side scanner unit 212, clerk side display unit 210, key operation unit 211, etc.).

[0031] When the clerk has completed the registration process, the customer checks the total amount of the purchased items on the clerk-side display unit 210, and settles the bill by inserting coins into the change dispenser 209 or operating the card reader 208. In other words, the POS terminal 20 executes the settlement process according to the customer's operation (inserting coins into the change dispenser 209, operating the card reader 208), etc.

[0032] The customer may wait until the registration process is completed by the store clerk (until the total amount is confirmed), or may insert money into the change dispenser 209 before the registration process is completed. In other words, the POS terminal 20 can accept deposits during the registration process.

[0033] The store clerk may wait until the customer has completed the payment (until the customer has received the change and receipt), or may register the items purchased by the next customer. In other words, the POS terminal 20 can register the items purchased by the next customer while the payment is being processed. The store clerk may also be absent while the customer is paying. In other words, the store clerk may finish serving the customer while the customer is paying.

[0034] Furthermore, if there is change, the POS terminal 20 controls the dispenser 209 to dispense the change and change notes to prevent the customer from forgetting to take the change. After a sensor or other device detects that the customer has removed the change and change notes, the POS terminal 20 controls the printing unit 213 to issue a receipt. This is also true in other operating modes. As described above, in normal mode (as well as double scan mode), a store clerk may or may not be present in front of the customer receiving the change. If a store clerk is present, the above-described control does not necessarily need to be performed (i.e., the dispensing of change and change notes and the issuance of a receipt may be performed simultaneously, or the receipt may be issued first). Furthermore, the timing of dispensing change and change notes and issuing a receipt may be controlled depending on the current operating mode and the presence / absence of a store clerk (for example, the presence / absence of a store clerk is detected by a sensor).

[0035] [Full Selfie Mode] The full self-service mode is an operation mode in which the customer side performs the registration process and the settlement process. That is, in the full self-service mode, the customer side is in both the registration mode and the settlement mode. In other words, the POS terminal 20 operates in the registration and settlement mode when viewed from the entire process from the registration process to the settlement process.

[0036] In the full self-service mode, the customer registers the purchased items on the customer side (customer side scanner unit 206, customer side display unit 205). That is, the POS terminal 20 executes the registration process of the purchased items by the customer's operation (scanning by the customer side scanner unit 206, touching the customer side display unit 205).

[0037] When the registration process is completed, the customer checks the total amount of the purchased items on the customer side display unit 205 and settles the bill by inserting coins into the change dispenser 209 or, in the case of credit card payment, operating the card reader 208. In other words, the POS terminal 20 executes the settlement process according to the customer's operation (inserting coins into the change dispenser 209, operating the card reader 208).

[0038] As described above, in the full self-service mode, the customer performs both the registration process and the payment process, but this does not mean that the store clerk cannot do anything. In other words, even when the POS terminal 20 is operating in the full self-service mode, the store clerk code can be scanned using the store clerk scanner unit 212. Furthermore, even when the POS terminal 20 is operating in the full self-service mode, various information can be displayed on the store clerk display unit 210. For example, during operation in full self-service mode, the clerk-side display unit 210 may be configured to display the same screen as that displayed on the customer-side display unit 205, depending on the registration process and payment process being performed on the customer side. In other words, the clerk-side display unit 210 may display a mirrored version of the content displayed on the customer-side display unit 205. This allows the clerk to understand what operations the customer is performing and the processing status of the POS terminal 20 in full self-service mode.

[0039] [Double Scan Mode] The double scan mode is an operation mode in which the registration process is performed on both the clerk side and the customer side, and the settlement process is performed on the customer side. That is, in the double scan mode, both the clerk side and the customer side are in registration mode, and the customer side is in settlement mode. In other words, the POS terminal 20 operates in the registration and settlement mode when viewed from the entire process from registration to settlement.

[0040] In double scan mode, the clerk registers the purchased items on the clerk side (clerk scanner unit 212, clerk display unit 210, key operation unit 211), and the customer registers the purchased items on the customer side (customer scanner unit 206, customer display unit 205). In other words, the POS terminal 20 executes the registration process of the purchased items through operations by the clerk (scanning with clerk scanner unit 212, touching the clerk display unit 210, pressing the key operation unit 211, etc.) and operations by the customer (scanning with customer scanner unit 206, touching the customer display unit 205).

[0041] When the registration process is completed, the customer checks the total amount of the purchased items on the customer side display unit 205 and settles the bill by inserting coins into the change dispenser 209 or, in the case of credit card payment, operating the card reader 208. In other words, the POS terminal 20 executes the settlement process according to the customer's operation (inserting coins into the change dispenser 209, operating the card reader 208).

[0042] The store clerk may wait until the customer completes the payment (until the customer receives the change and receipt), or may register the items purchased by the next customer. In other words, the POS terminal 20 can register the items purchased by the next customer while the payment is being processed. The store clerk may also be absent while the customer is paying. In other words, the store clerk may finish serving the customer while the customer is paying.

[0043] [Semi-selfie mode] The semi-self-service mode is an operation mode for two or more POS terminals 20, in which the registration process is performed by the store clerk at at least one POS terminal 20, and the settlement process is performed by the customer at another POS terminal 20. That is, in the semi-self-service mode, one or more POS terminals 20 are in the registration-only mode, and the other one or more POS terminals 20 are in the settlement-only mode.

[0044] In the semi-self mode, the store clerk registers the purchased items of the customer on the store clerk side (store clerk scanner unit 212, store clerk display unit 210, key operation unit 211) of the POS terminal 20 in the registration-only mode. In other words, the POS terminal 20 executes the registration process of the purchased items by the operation of the store clerk (operation of the store clerk scanner unit 212, store clerk display unit 210, key operation unit 211, etc.).

[0045] When the clerk has completed the registration process, the customer moves to the POS terminal 20 in the settlement-only mode, checks the total amount of the purchased items on the clerk-side display unit 210, and settles the bill by inserting coins into the change machine 209 or operating the card reader 208. In other words, the POS terminal 20 executes the settlement process according to the customer's operation (inserting coins into the change machine 209, operating the card reader 208), etc.

[0046] When the registration process is completed at the POS terminal 20 in the registration-only mode, the customer moves from the POS terminal 20 in the registration-only mode to the POS terminal 20 in the settlement-only mode, and the information necessary for the settlement process (such as the registration information generated at the POS terminal 20 in the registration-only mode) is supplied to the POS terminal 20 to which the customer has moved.

[0047] The destination POS terminal 20 (the POS terminal 20 in the settlement-only mode that executes the settlement process) may be specified by the POS terminal 20 in the registration-only mode. Alternatively, a medium (a medium on which a barcode or the like for obtaining information necessary for the settlement process is printed) may be issued by the POS terminal 20 in the registration-only mode, and the POS terminal 20 in the settlement-only mode that reads the medium may be set as the destination POS terminal 20.

[0048] In the semi-self-service mode, after the store clerk has transmitted the registration information, the store clerk can register the next customer's purchase. Also, after the store clerk has transmitted the registration information, the store clerk may be absent.

[0049] [Quantity input screen display] In the case of the POS terminal 20 set to the full self-service mode, the customer himself performs the operations required for the transaction, from product registration to payment. When a customer uses the POS terminal 20 in full self-service mode to make a purchase, there may be cases where the products the customer is purchasing include multiple items of the same item. In such cases, the customer can register the products by reading the product code for each of the multiple items of the same item. However, when the breakdown of the same products includes a large number of items per item, or when there are multiple items purchased in multiple quantities, the operation of reading the product code for each of the multiple items of the same item may become cumbersome.

[0050] For example, when registering multiple items of the same product, a quantity input screen may be displayed, allowing the customer to input the number of items to be registered for which the product code has been read, at their own discretion, and to specify the number to be registered. By inputting the number to be registered by operating the quantity input screen, it becomes unnecessary to register the same product one by one. However, in this case, the customer needs to perform an operation to display the quantity input screen, which increases the number of operational steps the customer needs to take when registering products, and may actually reduce operational efficiency.

[0051] Therefore, in this embodiment, the POS terminal 20 in the full self-service mode is configured to automatically display a quantity input screen when a predetermined number of identical products are consecutively registered during product registration. The display of the quantity input screen in this embodiment will be described below.

[0052] 5 shows an example of a product registration screen displayed on the customer-side display unit 205 of the POS terminal 20 in full self-service mode. The product registration screen in the figure includes a registration guidance area AR11, a registered product area AR12, and a payment transition instruction button BT12.

[0053] The registration guidance area AR11 is an area where customers are given guidance regarding product registration. In addition, the registration guidance area AR11 displays messages, images, etc., guiding customers to perform product registration operations by having the customer-side scanner unit 206 read the barcode (which may be another code such as a two-dimensional code) attached to the product to be registered.

[0054] In addition, in the registration guidance area AR11 of the same figure, an item designation registration instruction button BT11 is located to display a screen (item designation registration screen) for specifying and registering the item for the product to be registered if the product to be registered does not have a barcode attached. When the item designation registration instruction button BT11 is operated, the item designation registration screen is displayed, and the customer can register the product by selecting the product to be registered from the product items displayed on the displayed item designation registration screen. Note that a registration-compatible imaging unit (camera) compatible with product registration may be provided in the POS terminal 20, and product registration may be enabled by identifying the product based on an image captured by the registration-compatible imaging unit. In this case, the product may be identified by the POS terminal 20 or by a higher-level device of the POS terminal 20, such as the management device 30.

[0055] In the following explanation, an example will be given in which a customer registers a product by performing an operation to have the customer-side display unit 205 read the product code attached to the product to be registered.

[0056] The registered product area AR12 is an area where information about the products registered up to now is presented. In the registered product area AR12 in the same figure, a list item for each registered product, the number of registered products (number of registered products (number of purchased products)), and the total price of the registered products are displayed. In this case, the registered product area AR12 shows that one mineral water has been registered. That is, the registered product area AR12 has one list item corresponding to one mineral water, the number of registered items shows "1 item", and the total price shows "98 yen" corresponding to the one registered mineral water.

[0057] Additionally, a surveillance image IM is displayed at the bottom left of the product registration screen in the figure. The surveillance image IM displays an image captured by the imaging unit 216 corresponding to the current time. By displaying the surveillance image IM in this manner, customers are made aware that they are being monitored by imaging while they are paying. This helps to prevent fraudulent behavior by customers.

[0058] As shown in the figure, when one mineral water item has been registered, the customer registers another mineral water item of the same type as the next product. In other words, the customer has performed an operation to have the customer-side scanner unit 206 read the product code of the same mineral water item twice in succession, during the previous registration and this registration. As a result, the same product has been registered twice in succession. In this way, if the same mineral water product is registered twice in a row, it is possible that even more of the same mineral water product will be registered. In such cases, it is highly likely that product registration will be more efficient if customers are allowed to specify (input) the number of mineral water products they wish to register. Therefore, in response to the fact that the same product has been registered twice in succession, the POS terminal 20 in this embodiment displays on the customer side display unit 205 a quantity input screen corresponding to the registered product.

[0059] Fig. 6 shows an example of the quantity input screen. The quantity input screen in Fig. 6 is displayed in response to the registration of another mineral water from the state in Fig. 5, resulting in the second consecutive registration of mineral water.

[0060] 10, a quantity input operation area AR20 and a back button BT22 are arranged on the quantity input screen. Also on the quantity input screen, a monitoring captured image IM is arranged.

[0061] The quantity input operation area AR20 is an area where an operation to input (specify) the registration quantity for the most recently registered product (item) is performed. In the quantity input operation area AR20, a product information area AR21, a quantity area AR22, a number input operation area AR23, and a confirm button BT21 are arranged.

[0062] The product information area AR21 is an area where information about the product for which the quantity is to be input is presented. Specifically, the product information area AR21 in the figure presents the product name and price (unit price) of the product for which the quantity is to be input.

[0063] The quantity area AR22 is an area where the number of registered items input by the customer's operation is displayed. The quantity input screen in the same figure shows the initial display state. In this case, the same mineral water product has already been registered twice in succession through previous product registrations. Therefore, the quantity area AR22 on the initial quantity input screen displays "2" as the registered number, indicating that two identical mineral water products have already been registered through previous registrations.

[0064] The number entry operation area AR23 is an area where the operation of inputting the number of items to be registered is performed. Numeric keys are arranged in the number entry operation area AR23. A customer can input the number of items to be registered by operating the number key corresponding to the number of items to be registered. For example, if a total of four bottles of mineral water are to be registered, the customer operates the number key "4". In response to the operation of the number key "4", the number displayed in the number area AR22 changes from "2" to "4".

[0065] In the initial display state, the number displayed in the number area AR22 indicates the number of items that have already been registered. Therefore, it is possible to adopt the idea that a number equal to or less than the number displayed in the number area AR22 in the initial display state does not need to be entered as the number of items to be registered. Therefore, the POS terminal 20 may be configured not to accept operations of numeric keys corresponding to numbers equal to or less than the number displayed in the quantity area AR22 in the initial display state.

[0066] Conversely, the POS terminal 20 may be configured to allow input of numbers less than "2", which is the number of mineral waters already registered, as the registration number. For example, if a customer intended to purchase two bottles of mineral water, but when the quantity entry screen is displayed, changes his / her mind and decides to purchase only one bottle, the customer enters "1" as the registration quantity. In other words, in this case, the product registration information can be changed to reduce the number of the same product that has been registered up to that point.

[0067] In addition to the numeric keys in the number entry operation area AR23, a plus button and a minus button may be provided so that the number to be registered can be increased or decreased by one.

[0068] The enter button BT21 is a button that is operated to confirm the registration number by the number displayed in the number area AR22. After the customer has finished inputting the registration number, the customer operates the enter button BT21. In response to the operation of the decision button BT21, the POS terminal 20 clears the quantity input screen and transitions to displaying a product registration screen. The displayed product registration screen reflects the registration number of the mineral water product input in response to the operation on the quantity input screen. Specifically, when "4" is entered as the registration quantity by operating the quantity input screen, four list items corresponding to individual mineral waters are arranged in the registered product area AR12. Alternatively, the number of registered items and the price corresponding to the number of registered items may be displayed to reflect that four items have been registered in the list item corresponding to one mineral water. In addition, in the same registered product area AR12, the number of registered items indicates "4 items," and the total price of the registered products indicates "392 yen," which is equivalent to four bottles of mineral water.

[0069] On the other hand, if the customer intends to register only two bottles of mineral water and does not need to register any more, there is no need to input the number of bottles on the quantity input screen. In this case, the customer operates the back button BT22. In response to the operation of the back button BT22, the POS terminal 20 cancels the registration quantity input by the operation performed on the quantity input screen and returns to the display of the product registration screen. In this case, two mineral waters have been registered so far. Therefore, the displayed product registration screen reflects the result of registering two mineral waters. In addition, when the customer intends to register two mineral waters as described above, the confirm button BT21 may be operable in addition to the back button BT22. In this case, the POS terminal 20 confirms the number of registrations to be "2" and then transitions (returns) to the display of the product registration screen. In this case, the displayed product registration screen also reflects the result of the registration of two mineral waters.

[0070] [Example of processing procedure] 7 shows an example of a processing procedure executed by the POS terminal 20 in relation to product registration. The processing in this figure starts when the POS terminal 20 displays a product registration screen on the customer-side display unit 205 and waits for product registration to be performed.

[0071] Step S101: The POS terminal 20 waits for product registration to be performed while displaying the product registration screen. Step S102: When the customer causes the customer-side scanner unit 206 to read the product code of the product to be registered in response to an operation by the customer to have the customer-side scanner unit 206 read the product code, the POS terminal 20 executes product registration processing. That is, the POS terminal 20 acquires product information associated with the product code read by the customer-side scanner unit 206 from the product master stored in the store controller 10. The POS terminal 20 includes the acquired product master in the product registration information for this transaction.

[0072] Step S103: The POS terminal 20 refers to the product registration result of this step S102 and the product registration result of the previous step S102, and determines whether the current product registration has resulted in the same product being registered twice in a row.

[0073] Step S104: If it is determined in step S103 that the same product has been registered twice in succession, the POS terminal 20 displays a quantity input screen on the customer-side display unit 205. The quantity input screen displayed in step S104 is a quantity input screen for inputting the quantity of the product registered in the last step S102.

[0074] Step S105: The POS terminal 20 accepts a quantity input operation performed on the displayed quantity input screen.

[0075] Step S106: The POS terminal 20 also determines whether or not a cancel operation has been performed while the quantity input screen is being displayed. The cancel operation is an operation on the back button BT22 on the quantity input screen.

[0076] Step S107: If it is determined in step S106 that the cancel operation has not been performed, the POS terminal 20 further determines whether or not a confirmation operation has been performed to instruct the confirmation of the input registration quantity. The confirmation operation is an operation on the decision button BT21. If it is determined that the confirmation operation has not been performed, the process returns to step S105.

[0077] Step S108: If it is determined in step S107 that the confirmation operation has been performed, the POS terminal 20 updates the product registration information so that the input registration number for the product for which the quantity is to be input is reflected.

[0078] Step S109: After the process of step S108, or if it is determined in step S106 that a cancel operation has been performed, the POS terminal 20 clears the quantity input screen and displays the product registration screen. When the process reaches step S109 after the process of step S108, the POS terminal 20 displays a product registration screen that reflects the contents of the product registration information updated in step S108. On the other hand, if the process reaches step S109 because it is determined in step S106 that a cancel operation has been performed, the POS terminal 20 displays a product registration screen that reflects the product registration results up to the final step S102.

[0079] Step S110: After the process of step S109, or if it is determined in step S101 that product registration has not been performed, or if it is determined in step S103 that the same product has not been registered twice consecutively, the POS terminal 20 determines whether a checkout instruction operation has been performed. The checkout instruction operation is an operation performed using the checkout instruction button BT12 on the product registration screen. If it is determined that the settlement transition instruction operation has not been performed, the process returns to step S101.

[0080] Step S111: If it is determined in step S110 that the settlement transition instruction operation has been performed, the POS terminal 20 transitions to the settlement process.

[0081] <Modification> Although the embodiments of the present invention have been described above, the device configuration, data configuration, processing flow, display and output aspects, etc. can be changed or modified as appropriate, for example, as in the following modified examples. In addition, the following modified examples can be combined as appropriate.

[0082] [First Modification] Fig. 8 shows an example of the quantity input screen of this modified example. In this figure, the same parts as in Fig. 6 are given the same reference numerals and their explanations will be omitted. The quantity input screen in the figure shows the initial display state when it is displayed in response to the same mineral water product being registered twice in succession, as in the example of the above embodiment.

[0083] In the initial display state of the quantity input screen of this modified example, the quantity area AR22 is blank. The customer operates the quantity input operation area AR23 to input a number corresponding to the registered quantity of the target product into the blank quantity area AR22. In this modified example, the POS terminal 20 may also allow a number equal to or less than "2", which is the number of mineral waters that have already been registered, to be input as the registration number. Alternatively, in this modified example, the POS terminal 20 may also not allow a number equal to or less than "2", which is the number of mineral waters that have already been registered, to be input as the registration number.

[0084] [Second Modification] Fig. 9 shows an example of the quantity input screen of this modified example. In Fig. 9, the same parts as in Fig. 6 are given the same reference numerals and their explanations are omitted. As in the example of the above embodiment, the quantity input screen in Fig. 9 shows the initial display state when it is displayed in response to the same mineral water product being registered twice in succession.

[0085] The quantity area AR22 of the quantity input screen of this modified example includes a registered quantity area AR221 and a remaining quantity area AR222. The registered quantity area AR221 is an area that indicates the number of products (registered quantity) that have been registered up until the time the quantity input screen is displayed. The registered quantity indicated in the registered quantity area AR221 may not be changeable.

[0086] The remaining quantity area AR222 is an area where the remaining quantity, which is the total number of products for which the customer is trying to register a quantity input target minus the number of products already registered, is entered. In other words, the remaining quantity area AR222 is an area where the customer enters the number of products that remain to be registered out of the total number of products for which the customer is trying to register a quantity input target. The customer can enter the remaining quantity in the remaining quantity area AR222 by operating the quantity input operation area AR23.

[0087] As a specific example, if a customer wishes to purchase a total of four bottles of mineral water, the customer inputs the remaining quantity of "2" into the remaining quantity area AR222, and then operates the decision button BT21. If the customer intends to purchase two bottles of mineral water in total, the customer can leave the remaining quantity blank or enter "0" before pressing the confirm button BT21. Alternatively, in this case, the customer can press the back button BT22 to return to the product registration screen.

[0088] [Third Modification] In this modified example, when the quantity input screen is displayed and a customer performs an operation to have the customer-side scanner unit 206 read the product code of the same product as the product for which the quantity is to be input corresponding to the quantity input screen, the POS terminal 20 may add the read product to the registered number on the displayed quantity input screen.

[0089] [Fourth Modification] In the above embodiment, the quantity input screen is displayed when the same product is registered twice. That is, in the above embodiment, the condition for displaying the quantity input screen is stipulated as the number of times the same product has been registered (number of times the same product has been registered) being two. In this modified example, the number of times the same product has been registered as a condition for displaying the quantity input screen may be set to a predetermined number greater than two. Depending on the trends in products sold in a store, even if a customer purchases multiple items of the same product, it may be the case that the number of times the same product is registered is limited to two or three. In such cases, if the number of times the same product is registered is set to two, as in the embodiment, even if the quantity input screen is displayed, there will be few opportunities to enter the registration number on the quantity input screen, which may actually reduce the efficiency of product registration. In such cases, for example, by setting the number of times the same product is registered to four, it becomes easier to achieve the effect of improving the efficiency of product registration by displaying the quantity input screen.

[0090] [Fifth Modification] In the above embodiment, the condition for displaying the quantity input screen is that the same product has been registered multiple times in succession. In this modified example, the quantity input screen may be displayed in response to the fact that the same product has been registered a predetermined number of times, even if not consecutively, in the product registration so far. Specifically, in this modified example, if the number of times the same product can be registered is set to three, for example, after mineral water is registered twice in a row, a product other than mineral water is registered a certain number of times, and then mineral water is registered again. In other words, mineral water is registered for the third time. In response to this third registration of mineral water, the POS terminal 20 displays a quantity input screen in which the quantity of mineral water is to be input.

[0091] However, even if the same product is registered a certain number of times, if many other products are registered while the same product is registered multiple times, it may not be possible to expect a significant increase in the efficiency of product registration even if a quantity input screen is displayed and the customer is asked to input the quantity. Therefore, in this modification, for example, when the same product registration count is registered for a certain same product, if the number of other registered products is equal to or greater than a predetermined number in the time series from the first registration of the same product to the next registration of the same product (registration waiting period), the POS terminal 20 may not display the quantity input screen. In this case, the POS terminal 20 continues to display the product registration screen and waits for the next product registration.

[0092] The POS terminal 20 may not display the quantity input screen if the number of other products registered during the entire registration waiting period is equal to or greater than a predetermined number. Alternatively, the POS terminal 20 may not display the quantity input screen when the number of other products registered during a predetermined number of registration waiting periods or more is equal to or greater than a predetermined number. Alternatively, the POS terminal 20 may not display the quantity input screen if the number of other products registered during a specific registration waiting period among the registration waiting periods is equal to or greater than a predetermined number. As a specific example of this case, the POS terminal 20 may set the last registration waiting period as the specific registration waiting period. In this case, the POS terminal 20 may not display the quantity input screen only if the number of other products registered between the current registration of the same product and the previous registration of the same product is equal to or greater than a predetermined number.

[0093] In addition, instead of determining whether the number of other products registered during the registration waiting period is greater than or equal to a predetermined number, the POS terminal 20 may determine whether to display the quantity input screen based on whether the time that has elapsed during the registration waiting period is greater than or equal to a predetermined number.

[0094] [Sixth Modification] In the above embodiment, the back button BT22 is operated to close the quantity input screen without finalizing the registration quantity. In this modified example, when the quantity input screen is displayed and the operation to input the registered quantity or remaining quantity is possible, if the customer causes the customer-side scanner unit 206 to read the product code of any of the products that the customer has not yet registered, the POS terminal 20 may erase the quantity input screen without confirming the registered quantity that was input on the quantity input screen. This allows the customer to erase the quantity input screen and continue registering subsequent products without operating the back button BT22, by simply having the customer-side scanner unit 206 read the product code of another product other than the same product. In addition, when the quantity input screen is displayed, even if the customer side scanner unit 206 reads the product code of the same product for which the quantity is to be input on the quantity input screen, the quantity input screen may be erased without confirming the registered quantity that was input on the quantity input screen.

[0095] [Seventh Modification] Some products have a limit on the number of items that can be purchased, or are not suitable for multiple or large purchases by customers, or are difficult to anticipate multiple or large purchases (multiple purchase restricted items). Examples of multiple purchase restricted items include items with a limit on the number of items that can be purchased per customer, or heavy or large items such as bags of rice or bedding (blankets, futons). Publications such as books and newspapers may also be included as multiple purchase restricted items. Since it is difficult to anticipate a single customer purchasing the same item multiple times, if the same publication is registered multiple times, it is highly likely that the customer made a mistake in registering it the second or subsequent times. For the above-mentioned products, it is rare that multiple items are purchased, so it is not efficient to set up the screen to display the quantity input screen.

[0096] Therefore, in this modified example, the quantity input screen may not be displayed for products with multiple purchase restrictions. To achieve this, for example, a display setting flag that specifies whether or not to display the quantity input screen for each product may be stored in the product master. When a product is registered, the POS terminal 20 references the display setting flag of the product to be registered, and if the referenced display setting flag indicates that display is prohibited, the POS terminal 20 does not display the quantity input screen even if the conditions for displaying the quantity input screen are met.

[0097] In addition, whether or not to display the quantity input screen may be set depending on the business hours, the day of the week, or whether or not to display the quantity input screen may be set depending on whether or not the customer is a member of the store. In addition, there are products that are likely to be purchased in large quantities by one customer for a limited time, such as special sale items or chocolates sold a few days before Valentine's Day. Therefore, even if the quantity input screen for a specific product is normally set not to be displayed, it may be set to display the quantity input screen for such products only for a certain period (time period).

[0098] [Eighth Modification] Although this is not a multiple purchase restricted product, a customer may register multiple different items (similar related products) that are similar in appearance in a single transaction. In such a case, the customer may mistakenly believe that the different similar related products are the same product. In this case, if a quantity input screen is displayed after one similar related product has been registered a predetermined number of times, the customer may mistakenly enter the quantities of all the items that are similar related products into the quantity input screen. In this case, the product registration results may differ from the breakdown of the products that the customer actually intends to purchase. Therefore, in this modified example, for example, information indicating a similar relationship (similarity relationship information) is added to products that are similar in a product master or the like. Furthermore, even if product A of a certain item has been registered a predetermined number of times, the POS terminal 20 may not display the quantity input screen corresponding to product A if product B that is similar to product A has already been registered. This makes it possible to avoid a customer erroneously entering the total number of product B registered earlier and product A registered later on the quantity input screen. Furthermore, such similar related products may also be treated as products with multiple purchase restrictions, and the quantity input screen may not be displayed even if they are registered a predetermined number of times or more.

[0099] [Ninth Variation] In the case of a product with a purchase limit, the POS terminal 20 may display the quantity input screen when the conditions for displaying the quantity input screen are met, and then allow the user to input a quantity up to the upper limit set for the product in question on the displayed quantity input screen.

[0100] [Tenth Modification] In addition, for sale items or items that are likely to be purchased in large quantities by a single customer for a limited period of time, the POS terminal 20 may be configured to display a quantity input screen for inputting the quantity of the first item when the product code of the first item is read.

[0101] [Eleventh Modification] For example, the product registration screen of Fig. 5 may be configured to allow a customer to declare that they will purchase multiple copies of the same product. Specifically, a multiple purchase declaration button that accepts an operation to declare that they will purchase multiple copies of the same product may be placed at a predetermined position on the product registration screen. The POS terminal 20 may display a quantity input screen for inputting the quantity of the product whose product code was read immediately before or after the multiple purchase declaration button was operated. In this case, the POS terminal 20 may change the display mode of the multiple purchase declaration button, such as by flashing, emitting light, changing color, etc., in response to the registration of a predetermined number of the same product, to highlight the same product. This notifies the customer that if they wish to register even more of the same product, they can operate the multiple purchase declaration button to display a quantity input screen and input the number of products to be registered. In addition, in addition to highlighting the multiple purchase declaration button, or instead of highlighting the multiple purchase declaration button, the POS terminal 20 may display a message informing the customer that by operating the multiple purchase declaration button, a quantity input screen will be displayed where the customer can input the number of items to be registered.

[0102] [12th Modification] A plurality of quantity input screens may be prepared. These may include the quantity input screens shown in FIGS. 6, 8, and 9. In this case, for example, customer-screen correspondence information may be stored that associates a quantity input screen of one of the plurality of types with each customer's membership identification information. The customer-screen correspondence information may be stored in the POS terminal 20, or may be stored in a higher-level device of the POS terminal 20, such as the management device 30. Furthermore, the customer-screen correspondence information may be registered, for example, by a customer operating the POS terminal 20 to select a quantity input screen with the ease of use, design, etc. that they prefer. When registering a product, a customer enters member identification information recorded on a member card or the like into the POS terminal 20. When the conditions for displaying the quantity input screen are met, the POS terminal 20 accesses the customer-screen correspondence information to identify the mode of the quantity input screen associated with the entered member identification information. The POS terminal 20 then displays the identified mode of the quantity input screen. In this way, in this modified example, a quantity input screen can be displayed according to the customer's preferences. The POS terminal 20 may also be configured to allow a store clerk to register the quantity input screen he or she wishes to use. In this case, the POS terminal 20 or the higher-level device stores store clerk-screen correspondence information that associates store clerk identification information with the appearance of the quantity input screen. In this case, when a store clerk needs to operate the quantity input screen, for example to assist a customer, the store clerk identification information on the store clerk ID card is read by the POS terminal 20. The POS terminal 20 accesses the store clerk-screen correspondence information, identifies the mode of the quantity input screen associated with the read store clerk identification information, and displays the identified quantity input screen.

[0103] [13th Modification] For example, the decision as to whether or not to display the quantity input screen may be made by a predetermined higher-level device (management device 30, store controller 10, cloud server, etc.) based on information indicating the product registration results sent from the POS terminal 20, and the higher-level device may instruct the POS terminal 20 to display the quantity input screen.

[0104] [14th Modification] The configurations of this embodiment and the above-described modified examples can also be applied to a product sales data processing system in which a customer uses a mobile terminal to register products, by displaying a quantity input screen on the mobile terminal. The mobile terminal used by the customer may be a smartphone or tablet terminal carried by the customer. In this case, for example, a terminal holder to which the mobile terminal can be attached / detached may be attached to the shopping cart, and the customer may attach their mobile terminal to the terminal holder and use it while shopping (registering products). The mobile terminal used by the customer may also be a smartphone or tablet terminal provided by the store and permanently attached to the shopping cart. In addition, the configurations of the above embodiments and each of the above variations may also be applied to a product registration device in a product sales data processing system that includes a product registration device that registers products in response to operations by a store clerk, and a settlement device that settles the payment for products registered by the product registration device in response to operations by a customer.

[0105] The configurations of the above embodiment and each of the above modifications may also be applied to a POS terminal in which the same clerk performs both product registration and payment. In this case, when the clerk registers a predetermined number of the same product, a quantity input screen for the clerk is displayed. At this time, as in the eleventh modification, the quantity input screen may be displayed in a format associated with the clerk identification information entered into the POS terminal by the clerk as the person handling the product.

[0106] The configurations of the above-described embodiments and modifications may also be applied to a weighing pricing device. A weighing pricing device is a product sales data processing device that calculates the price of a product based on the weight measured for the product placed on a weighing platform and the unit price by weight, and generates product pricing information for the product including the calculated price. Such weighing pricing devices may be capable of calculating the price based on the unit price and the number of products without weighing them, for example, for non-weighed products such as apples sold individually. Such non-weighed products can be designated as products to be registered, for example, by operating a product key (preset key) arranged on a product selection screen displayed on the display unit of the weighing pricing device. Such weighing pricing devices may display a quantity input screen in which the number of products to be entered is to be entered, for example, when the same product has been selected by operating the product key a predetermined number of times or more.

[0107] <Summary of the embodiment> [Technical field] The present invention relates to a product sales data processing device. [Background technology] BACKGROUND ART There is known a technology for a self-payment terminal (full self-checkout) in which a customer performs various operations for executing product sales data processing by himself / herself (see, for example, Patent Document 1). [Prior art document] [Patent documents] [Patent Document 1] JP 2020-205023 A [Summary of the Invention] [Problem to be solved by the invention] In a fully self-service product sales data processing device, the customer is required to perform an operation to register the products to be purchased, and it is preferable that product registration be performed efficiently. The present invention has been made in view of the above circumstances, and has as its object to enable efficient product registration.

[0108] [Means for solving the problem] (1) One aspect of this embodiment is a product sales data processing device that includes a registration means for registering a product corresponding to acquired product identification information (e.g., a product code), a display means (e.g., customer-side display unit 205) capable of displaying a quantity change screen for specifying the number of identical products to be registered, and a control means for causing the display means to display the quantity change screen (e.g., a quantity input screen) in response to the registration of a predetermined number of identical products by the registration means.

[0109] According to the above configuration, when a predetermined number of identical products are registered, a quantity input screen (quantity change screen) can be displayed, which allows the customer to input the number of registered products for the same product. This allows the customer to complete the registration of the same product by inputting the number of registered products through the quantity input screen, without having to register the same product one by one, when there are many identical products to be registered. This allows for efficient product registration.

[0110] (2) One aspect of this embodiment is a product sales data processing device as described in (1), in which the control means causes the display means to display the quantity change screen in response to the registration of a predetermined number of identical products in succession.

[0111] According to the above configuration, the quantity input screen can be displayed on the condition that a predetermined number of identical products have been registered consecutively. This allows customers to register a large number of identical products by registering the first predetermined number of products consecutively, and then display the quantity input screen. In other words, customers can register a large number of identical products efficiently in a short amount of time.

[0112] (3) One aspect of this embodiment is a product sales data processing device as described in (1) or (2), which is equipped with a code symbol reading means (e.g., customer side scanner unit 206) capable of reading a code symbol (e.g., a product code) attached to a product as the product identification information, and the control means displays the quantity change screen in response to the registration of a predetermined number of identical products as a result of the code symbol of the same product being read by the code symbol reading means a predetermined number of times.

[0113] According to the above configuration, by registering a product by having the customer side scanner unit 206 read the product code attached to the product, a quantity input screen can be displayed in response to the registration of a predetermined number of identical products. This allows the product registration operation to be combined with the operation of registering a product by having the customer-side scanner unit 206 read the product code and inputting the number of items to be registered on the quantity input screen, thereby improving the efficiency of product registration.

[0114] (4) One aspect of this embodiment is a product sales data processing device described in any one of (1) to (3), wherein the control means displays the quantity change screen (e.g., the quantity input screen in Figures 6 and 8) that accepts input of the total number of identical products to be registered.

[0115] According to the above configuration, the customer can specify the number of the same product to be registered by inputting the number of the same product that the customer wishes to purchase into the quantity change screen.

[0116] (5) One aspect of this embodiment is a product sales data processing device described in any one of (1) to (3), wherein the control means displays the quantity change screen (e.g., the quantity input screen of Figure 9) that accepts input of the remaining number of units obtained by subtracting the specified number of units from the total number of units to be registered for the same product.

[0117] According to the above configuration, the customer can specify the number of the same product to be registered by inputting the remaining number of the same product to be registered from the number of the same product that has already been registered on the quantity input screen.

[0118] (6) One aspect of this embodiment is a product sales data processing device described in any one of (1) to (5), wherein the control means erases the quantity change screen when product identification information is acquired while the quantity change screen is displayed and the number can be input (e.g., variant 6).

[0119] According to the above configuration, the customer can erase the quantity change screen without confirming the input of the number of items to be registered by performing an operation to have the customer-side scanner unit 206 read the next item to be registered without operating the back button BT22.

[0120] (7) One aspect of this embodiment is a product sales data processing device described in any one of (1) to (6), comprising a settlement means for processing the settlement of registered products based on a customer's operation, and a product identification information reading means for reading the product identification information in response to an operation of the customer to read the product identification information, and the control means for displaying the quantity change screen on the display means corresponding to the customer.

[0121] According to the above configuration, in a self-service product sales data processing device in which the customer registers products and settles the account themselves, it is possible to provide a function to display a quantity change screen in which the customer can input the number of the same product to be registered when the customer registers a predetermined number of the same product. This configuration improves the efficiency of product registration in a self-service product sales data processing device.

[0122] Note that programs for implementing the functions of the POS terminal 20, store controller 10, management device 30, etc. described above may be recorded on a computer-readable recording medium, and the programs may be loaded into a computer system and executed to perform the processing of the POS terminal 20, store controller 10, management device 30, etc. Here, "loading a program recorded on a recording medium into a computer system and executing it" includes installing the program on a computer system. The term "computer system" here includes hardware such as an operating system and peripheral devices. The term "computer system" may also include multiple computer devices connected via a network, including communication lines such as the Internet, a WAN, a LAN, and a dedicated line. The term "computer-readable recording medium" refers to portable media such as floppy disks, optical magnetic disks, ROMs, and CD-ROMs, as well as storage devices such as hard disks built into a computer system. Thus, the recording medium storing the program may be a non-transitory recording medium such as a CD-ROM. The term "recording medium" also includes internal or external recording media accessible from a distribution server for distributing the program. The program code stored on the distribution server's recording medium may be different from the program code executable on the terminal device. In other words, the format in which the program is stored on the distribution server does not matter as long as it can be downloaded from the distribution server and installed in a form that is executable on the terminal device. The program may be divided into multiple parts, each of which may be downloaded at different times 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" also includes a storage medium that stores a program for a certain period of time, such as volatile memory (RAM) within a computer system that serves as a server or client when a program is transmitted over a network. The program may also be one that realizes part of the functions described above.Furthermore, the above-mentioned functions may be realized in combination with a program already recorded in the computer system, that is, a so-called differential file (differential program). [Explanation of symbols]

[0123] 1 POS system, 10 store controller, 20 (20-1, 20-2, 20-3) POS terminal, 30 management device, 201 CPU, 202 ROM, 203 RAM, 204 hard disk, 205 customer side display unit, 206 customer side scanner unit, 208 card reader, 209 change dispenser, 210 store clerk side display unit, 211 key operation unit, 212 store clerk side scanner unit, 213 printing unit, 214 audio output unit, 215 communication unit, 216 imaging unit, 217 sign pole

Claims

1. a registration means for registering a product corresponding to the acquired product identification information; a display means capable of displaying a quantity change screen for specifying the number of the same product to be registered; a control means for causing the display means to display the quantity change screen in response to the registration of the same product being performed a predetermined number of times consecutively by the registration means; The control means displays the predetermined number of times as the registered number of items to be input by the customer on the initial display of the quantity change screen. Product sales data processing device.

2. The control means causes the display means to display the quantity change screen in response to the registration of the same product being made three or more times in succession. The product sales data processing device according to claim 1 .

3. The quantity change screen includes a first operator for returning to the registration screen display and a second operator for confirming the displayed registration quantity.

3. The product sales data processing device according to claim 1.

4. The registration means confirms the initially displayed registered quantity when the first operator is operated without changing the registered quantity from the initially displayed state on the quantity change screen. The merchandise sales data processing device according to claim 3 .

5. The control means displays the quantity change screen for accepting input of the remaining number obtained by subtracting the number of registered units in the initial display from the total number of units to be registered for the same product. The product sales data processing device according to any one of claims 1 to 4.

6. The control means controls whether or not to display the quantity change screen depending on whether the same product that has been registered by the registration means a predetermined number of times in succession is a specific product. The product sales data processing device according to any one of claims 1 to 5.

7. A computer as a product sales data processing device, a registration means for registering a product corresponding to the acquired product identification information; a display means capable of displaying a quantity change screen for specifying the number of the same product to be registered; a control means for displaying the quantity change screen on the display means in response to the registration of the same product being performed a predetermined number of times consecutively by the registration means, and for displaying the predetermined number of times as the number of registrations to be input by the customer on the initial display of the quantity change screen; A program to function as a

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