Commodity sales data processing apparatus, commodity sales data processing method, and program

Abstract

To register goods in an appropriate manner.SOLUTION: A goods sales data processor includes goods registration means, goods determination means, quantity determination means, and notification means. The goods registration means registers goods to be purchased by a customer. The goods determination means determines whether or not registered goods include quantity-restricted goods, when conditions that allow the sale of the quantity-restricted goods with a quantity limit set for sale at a preferential price lower than the normal price are satisfied. The quantity determination means determines whether the quantity of the quantity-restricted goods exceeds the quantity limit when the quantity determination means determines that the quantity-restricted goods are included in the goods determination. The notification means notifies that the quantity-restricted goods that are not sold at the preferential price are included when the quantity determination determines that the quantity limit is exceeded.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a merchandise sales data processing apparatus, a merchandise sales data processing method, and a program.

Background Art

[0002] Conventionally, in a store or the like, for example, a product may be sold at a discounted price lower than the normal price. Among the products sold at the discounted price, there are quantity-limited products with a limit on the quantity sold at the discounted price. Quantity-limited products may be sold to customers who meet certain special sale conditions, such as store members or customers who possess a coupon. For example, a quantity-limited product may be sold at a discounted price (e.g., 10 yen off) up to one item per transaction, with the special sale condition being that the customer is a member. In other words, for such quantity-limited products, even if a member purchases two items at the same time, one item will be sold at the discounted price and the other will be sold at the normal price.

[0003] As a related technique, there is known a merchandise sales data processing apparatus that notifies an operator of the normal price and the special sale price of a special sale restricted product when the quantity of the special sale restricted product in a transaction exceeds the limit (see, for example, Patent Document 1 below).

[0004] Here, a merchandise sales data processing apparatus (for example, a POS (Point Of Sales) register) may have a condition (hereinafter referred to as a "special sale condition") such as reading member information after registering a quantity-limited product. Before the special sale condition is satisfied, the merchandise sales data processing apparatus registers the quantity-limited product at the normal price regardless of whether the quantity of the quantity-limited product is within the quantity limit. Then, after registering the quantity-limited product, when the special sale condition is satisfied, the merchandise sales data processing apparatus registers the product within the quantity limit at the discounted price and the product exceeding the quantity limit at the normal price as one item each.

Prior Art Documents

Patent Documents

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-121940 [Summary of the Invention] [Problems to be Solved by the Invention]

[0006] However, in the prior art, when the special sale conditions are met after registering quantity-limited products, even if the products within the quantity limit and the products exceeding the quantity limit among the quantity-limited products are registered separately, the store staff may not notice that products exceeding the quantity limit have been registered. For example, if there are products registered after registering quantity-limited products, since the products registered later are displayed in the registered product list, the store staff may not notice that products exceeding the quantity limit among the quantity-limited products have been registered.

[0007] As a result, the store staff cannot confirm with the customer the customer's intention to purchase regarding products exceeding the quantity limit, and products that the customer does not wish to purchase may be registered. Thus, there has been a problem in that the prior art may not be able to perform product registration suitably.

[0008] The present invention has been made in view of such circumstances, and an object thereof is to provide a technique capable of suitably performing product registration. [Means for Solving the Problems]

[0009] In order to solve the above-described problems, a product sales data processing apparatus according to an aspect of the present invention includes: a product registration unit that registers products purchased by customers; a product determination unit that determines whether a quantity-limited product, which is sold at a preferential price lower than the normal price and has a quantity limit for the sale, is included in the already registered products when the condition for enabling the sale of the quantity-limited product is satisfied; a quantity determination unit that determines whether the quantity of the quantity-limited product exceeds the quantity limit when it is determined in the product determination that the quantity-limited product is included; a notification unit that notifies that there is a quantity-limited product that is not sold at the preferential price when it is determined in the quantity determination that the quantity exceeds the quantity limit; and a display unit that displays the same registered products in a single registered product list regardless of the registered quantity, wherein when it is determined in the quantity determination that the quantity exceeds the quantity limit, the display unit displays the quantity-limited product at the preferential price within the quantity limit and the quantity-limited product at the normal price that exceeds the quantity limit in separate registered product lists, respectively. The product sales data processing apparatus is characterized by this.

Brief Description of the Drawings

[0010]

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Mode for Carrying Out the Invention

[0011] (Embodiment) FIG. 1 is a network configuration diagram of a POS (Point Of Sales) system according to an embodiment of the present invention. The POS system 1 can be introduced into various stores such as supermarkets, home centers, convenience stores, and various supply stores. The POS system 1 shown in FIG. 1 includes a store controller (store computer, management device) 10, a monitoring terminal 11, and three POS terminals 20-1, 20-2, and 20-3. Hereinafter, when there is no particular distinction between the POS terminals 20-1, 20-2, and 20-3, they are referred to as the POS terminal 20.

[0012] The store controller 10, the monitoring terminal 11, and the POS terminal 20 are communicably connected via a LAN (Local Area Network) 55. The store controller 10 records various types of information such as the items, prices, inventory status, sales history, deposit and withdrawal records, member information, discount information, etc. of the products in the store.

[0013] The monitoring terminal 11 displays the status (operation mode, processing status, etc.) of the POS terminal 20 and controls the POS terminal 20. The POS terminal 20 is a register for registering and settling products. The POS terminal 20 is an example of a product sales data processing device. In the POS system 1, the number of POS terminals 20 is three, but it may also be one or four or more.

[0014] (Configuration of the POS terminal 20) Next, the configuration of the POS terminal 20 will be described with reference to FIGS. 2 and 3. FIG. 2 is a diagram showing an installation example of the POS terminal 20. FIG. 3 is a diagram showing an example of the hardware configuration of the POS terminal 20. In FIGS. 2 and 3, the same parts are denoted by the same reference numerals.

[0015] FIG. 2(A) is a perspective view of the POS terminal 20 as seen from the customer side. FIG. 2(B) is a perspective view of the POS terminal 20 as seen from the store clerk side. As shown in FIG. 2(A), a counter 230 is placed on the right side of the POS terminal 20 as seen from the customer side. The counter 230 can place a shopping basket. Although the counter 230 is omitted in the illustration, it may also be placed on the left side of the POS terminal 20 as seen from the customer side of FIG. 2(A). That is, the counter 230 may be placed on both sides of the POS terminal 20.

[0016] In addition, the POS terminal 20 is provided with a sign pole 220. The sign pole 220 is provided with a light-emitting unit. The light-emitting unit of the sign pole 220 is, for example, a lamp or an LED (light emitting diode), and can be lit in a predetermined color and a predetermined lighting mode. The lighting mode of the sign pole 220 indicates that the POS terminal 20 is in use or indicates a notification for calling a store clerk. The sign pole 220 is provided at the highest position of the POS terminal 20, and it is possible for a store clerk not around the POS terminal 20 to recognize the lighting mode.

[0017] Hereinafter, with reference to FIG. 2, a configuration example of the POS terminal 20 shown in FIG. 3 will be described. The POS terminal 20 includes a CPU (Central Processing Unit) 201, a ROM (Read Only Memory) 202, a RAM (Random access Memory) 203, a hard disk 204, a customer-side display unit 205, a customer-side scanner unit 206, a card payment unit 208, a change dispenser 209, a store clerk-side display unit 210, a key operation unit 211, a store clerk-side scanner unit 212, a printing unit 213, an audio output unit 214, and a communication unit 215. These can communicate with each other via a bus.

[0018] The CPU 201 is a central processing unit, and controls the operation of the POS terminal 20 by reading out and executing various programs stored in the ROM 202. The various programs include a product sales data processing program according to the present embodiment. The ROM 202 is a read-only memory, and stores various information used by the CPU 201 including programs.

[0019] The RAM 203 is a memory that can be read from and written to, and stores various types of information. For example, the RAM 203 stores information acquired from the outside (such as product masters acquired from the store controller 10) and information generated during processing. This information includes, for example, registration information (registration data) generated during a registration process for registering products and settlement information generated during a settlement process for settling registered products (purchased products).

[0020] The hard disk 204 stores various types of information. The hard disk 204 may store, for example, programs executed by the CPU 201 instead of the ROM 202. Also, instead of the RAM 203, it may store information acquired from the outside or information generated during processing.

[0021] The customer-side display unit 205 is a touch display for customers. The customer-side display unit 205 displays various types of information to customers and accepts various inputs from customers.

[0022] The customer-side scanner unit 206 is a scanner unit for customers and optically reads various types of information. For example, the customer-side scanner unit 206 optically reads barcodes (such as product codes) attached to products and codes (barcodes, two-dimensional codes, etc.) printed on accounting vouchers (registered trademarks). In addition to the above, the customer-side scanner unit 206 may read codes (barcodes, two-dimensional codes, etc.) printed on vouchers (product vouchers, coupon vouchers, discount vouchers) and various cards (for example, membership cards, point cards, etc.). Note that product registration is not limited to registration by reading codes by the customer-side scanner unit 206. For example, it is also possible to display a preset key (a button for ordering a product) corresponding to a product on the customer-side display unit 205 and register the product when the preset key is operated (pressed) by the customer.

[0023] The card settlement unit 208 is a settlement mechanism for various cards. The various cards include credit cards, prepaid cards which are a form of electronic money, and point cards. The prepaid card stores (charges) an amount (remaining balance). The card settlement unit 208 includes a card recognition unit (reader), a display unit, and an operation unit. The card recognition unit magnetically or electrically reads information on various cards. The read information is used for the settlement of purchased goods. Note that the card recognition unit can also recognize information used for the settlement of the current purchased goods, such as when using the held points of a point card. Also, the card recognition unit can recognize information not used for the settlement of the current purchased goods, such as when adding points to a point card.

[0024] Note that the card settlement unit 208 of the present embodiment includes a card recognition unit, a display unit, and an operation unit, but is not limited thereto, and it suffices if it includes at least a card recognition unit. Also, the card recognition unit is compatible with non-contact cards (IC cards) and contact cards (IC cards, magnetic cards).

[0025] The change machine 209 (cash settlement unit) is a settlement mechanism using cash and has an inlet for bills and coins and an outlet for bills and coins. The change machine 209 calculates the amount of money inserted into the inlet, calculates the change amount which is the difference between the inserted amount and the purchase amount, and discharges the change from the outlet. The change machine 209 faces the customer side and accepts various operations and the insertion of cash from the customer. Note that the change machine 209 has a sensor for detecting bills and coins inserted into the inlet. The sensor detects that bills and coins have been inserted into the inlet and detects the number of each denomination.

[0026] The clerk-side display unit 210 is a touch display for clerks. The clerk-side display unit 210 displays various information to the clerk and accepts various inputs from the clerk.

[0027] The key operation unit 211 is composed of various keys (hardware keys, buttons). The key operation unit 211 receives various inputs from the store clerk. The key operation unit 211 includes numeric keys for inputting numbers, keys corresponding to the products to be registered, keys for switching modes, and the like.

[0028] The store clerk scanner unit 212 is a scanner unit for store clerks and optically reads various information. For example, the store clerk scanner unit 212 optically reads the barcode attached to the product and the store clerk code attached to the store clerk's name tag. In addition to the above, the store clerk scanner unit 212 may read the code printed on the receipt voucher, the product vouchers, and the codes printed on various cards.

[0029] Note that the registration of products is not limited to the registration by reading the code by the store clerk scanner unit 212. For example, a key corresponding to a product (for example, a key corresponding to a sports newspaper, etc.) may be arranged on the key operation unit 211, and the product may be registered when the key is operated (pressed) by the store clerk. Also, a preset key corresponding to the product may be displayed on the store clerk display unit 210, and the product can be registered when the preset key is operated by the store clerk.

[0030] The printing unit 213 prints and outputs various media (receipts, receipts, accounting vouchers, etc.). The printing unit 213 can change the direction of the media outlet. Specifically, the printing unit 213 has a rotatable mechanism and is configured such that the media outlet faces from the store clerk side to the customer side and also from the customer side to the store clerk side. Note that the direction of the media outlet may be manually changeable or may be automatically changeable according to the switching of the operation mode. The printing unit 213 may be provided with a sensor for detecting the correctness of the direction of the printing outlet.

[0031] The voice output unit 214 outputs voice. For example, the voice output unit 214 outputs voice guidance, warning sounds, and the like. The voice guidance and warning sounds are related to, for example, product registration and settlement. The communication unit 215 is an interface for transmitting and receiving information with other devices (the store controller 10, the monitoring terminal 11, and other POS terminals 20).

[0032] (Overview of each operation mode) Next, the operation modes of the POS terminal 20 will be described. The POS terminal 20 operates in any one of a plurality of operation modes. The plurality of operation modes are operation modes during normal business (operation modes related to registration processing and settlement processing). Specifically, the plurality of operation modes are a normal mode, an accounting dedicated mode, and a full self-service mode. Hereinafter, each of the normal mode, the accounting dedicated mode, and the full self-service mode will be briefly described.

[0033] (Normal mode) The normal mode is an operation mode in which the registration of products on the store clerk side (hereinafter sometimes referred to as "product registration") and the settlement on the customer side are enabled, and the product registration on the customer side is disabled. That is, the normal mode is an operation mode in which the registration process on the store clerk side is executed without executing the registration process on the customer side. In the product registration on the store clerk side, the registration of purchased products is performed using the store clerk side scanner unit 212, the store clerk side display unit 210, and the key operation unit 211. Also, in the normal mode, settlement is possible, such as the insertion of currency (banknotes and coins) and the reading of various cards. Note that in the normal mode, it is possible to start settlement (for example, the insertion of currency) even when the product registration process is being performed. However, in this specification, the settlement in the normal mode will be described as being started after the product registration is completed as a principle. Note that hereinafter, the settlement in the normal mode may be referred to as "face-to-face settlement".

[0034] Also, in the normal mode, it is possible to transmit registration information to other POS terminals 20. Transmitting registration information to other POS terminals 20 means sending the registration information generated in the registration process to other POS terminals 20 (POS terminals 20 in the accounting-only mode) capable of performing settlement processing. Also, in the normal mode, it is possible to issue accounting tickets. Issuing an accounting ticket means encoding the registration information and the like generated in the registration process and printing and outputting it on a printing medium (accounting ticket). Other POS terminals 20 can perform settlement processing by reading the code of the accounting ticket.

[0035] (Accounting-only mode) The accounting-only mode is an operation mode in which product registration on the clerk side and the customer side is disabled and customer-side settlement is enabled. Specifically, the accounting-only mode is an operation mode in which receiving registration information from other POS terminals 20 (POS terminals 20 in the normal mode), reading accounting tickets, and inserting money are enabled, and product registration on the clerk side and the customer side is disabled. Receiving registration information from other POS terminals 20 is a function of receiving the registration information generated in the registration process of other POS terminals 20. Reading an accounting ticket means reading the code printed on the accounting ticket or the encoded information. The accounting-only mode is an operation mode in which registration processing is not executed on the self-terminal and settlement processing is executed exclusively based on the registration information generated on other POS terminals 20. Note that in the accounting-only mode, transmitting registration information to other POS terminals 20 and issuing accounting tickets are disabled.

[0036] (Full self-service mode) The full self-service mode is an operation mode that disables product registration on the store staff side and enables product registration and settlement on the customer side. Specifically, the full self-service mode is an operation mode premised on the registration process on the customer side. In the customer-side product registration, the purchased products are registered using the customer-side scanner unit 206 and the customer-side display unit 205. Also, the full self-service mode is an operation mode capable of performing the settlement process on the self-terminal. Specifically, the full self-service mode is an operation mode that enables product registration and currency input on the customer side. Note that in the full self-service mode, the transmission of registration information to other POS terminals 20 and the issuance of accounting vouchers are disabled.

[0037] (An example of the special sale restricted product table) Next, with reference to FIG. 4, the special sale restricted product table will be described. FIG. 4 is an explanatory diagram showing an example of the special sale restricted product table. Here, in this specification, "special sale" means selling goods at a price lower than the normal price. "Special sale" is not limited to selling goods at a low price with limited period or quantity. "Special sale" also includes selling goods at a low price without limiting the period or quantity. Also, the "special sale price" indicates that it is lower than the normal price and is an example of a preferential price. The "special sale restricted product" is a product for which a limit is set on the sales quantity at a special sale price lower than the normal price and is an example of a quantity-restricted product. The special sale restricted product table 400 shown in FIG. 4 is stored, for example, in the store controller 10. However, the special sale restricted product table 400 may be stored in the POS terminal 20 or may be stored in an external server device.

[0038] As shown in FIG. 4, the special sale restricted product table 400 includes items such as product code, special sale restricted product, special sale conditions, normal price, special sale information, and quantity limit. The information associating the information of each item is the special sale restricted product information. The product code is a code assigned to each product and is identification information for uniquely identifying the product. The special sale restricted product indicates the product name of the special sale restricted product. The special sale conditions are the conditions for the special sale. Specifically, the special sale conditions are conditions such as being a member, a coupon being applicable, and the purchase amount being a certain amount or more.

[0039] The normal price is the normal price when the special sale restricted product is not on special sale. In other words, it is the price of the special sale restricted product when the special sale conditions are not met. The special sale information is information regarding the discount from the normal price. Specifically, the special sale information is, for example, information indicating 10% OFF, a ¥50 discount, 20% OFF, etc. with respect to the normal price. The quantity limit is the upper limit quantity sold at the special sale price when the special sale conditions are met.

[0040] Taking an example to explain, the special sale restricted product information 400a indicates that, on the condition of being a member, up to 3 bottles of "○○ Juice" will be sold at a 10% discount from the normal price. Specifically, the special sale restricted product information 400a shows that the product code is "○○○○", the special sale restricted product name is "○○ Juice", the special sale condition is "member", the normal price is "¥100", the special sale information is "10% OFF", and the quantity limit is "3 bottles".

[0041] (Regarding the functional configuration performed by the POS terminal 20 when a special sale restricted product is registered) Next, the functional configuration performed by the POS terminal 20 when a special sale restricted product is registered will be described. Hereinafter, the description will be based on the premise that face-to-face settlement is performed in the normal mode. Also, in this embodiment, as an example of the product sales data processing device, the POS terminal 20 will be taken as an example for description. However, the product sales data processing device is not limited to the POS terminal 20 and can also be a ticket vending machine (for example, a touch panel type ticket vending machine).

[0042] The POS terminal 20 includes a product registration unit, a product determination unit, a quantity determination unit, a notification unit, and a subtraction unit. These functional units are realized by the CPU 201. That is, when the CPU 201 executes a predetermined program (for example, a product sales data processing program), these functions are realized.

[0043] The product registration unit registers the products purchased by the customer. The product registration unit registers products based on, for example, the content received by the store clerk display unit 210 or the key operation unit 211 in response to the store clerk's operation, or the content read by the store clerk scanner unit 212 from the barcodes attached to the products.

[0044] When the special sale conditions for selling restricted-sale products are met, the product determination unit determines whether the registered products already registered by the product registration unit include restricted-sale products. The special sale conditions are conditions that can be met, for example, during the registration of products by the product registration unit (from the start of product registration to the start of settlement). Specifically, the special sale conditions include the condition of obtaining member information or coupon information when there are already registered products. In addition, the special sale conditions include the condition that the purchase amount is equal to or more than a certain amount when there are already registered products.

[0045] The product determination is, for example, a determination of whether restricted-sale product information including the same product code as the product code of the registered product is stored in the restricted-sale product table 400 (see FIG. 4). Note that the product determination is not performed when the special sale conditions are not met. Also, in this embodiment, the product determination is not performed at the timing when the restricted-sale product is registered, but at the timing when the special sale conditions are met. Note that when the special sale conditions are met first (the "prior special sale conditions" described later are met), the product determination is performed at the timing when the restricted-sale product is registered.

[0046] When it is determined in the product determination that the limited-sale products are included, the quantity determination unit performs a quantity determination on whether the quantity of the registered limited-sale products exceeds the quantity limit. Specifically, the quantity determination refers to the limited-sale product table 400 (see FIG. 4) to determine whether the quantity of the registered limited-sale products exceeds the quantity limit included in the limited-sale product information.

[0047] When it is determined in the quantity determination that the quantity limit is exceeded, the notification unit performs a notification (hereinafter referred to as "special-sale exclusion notification") that there are limited-sale products that are not sold at the special-sale price (hereinafter referred to as "special-sale excluded products"). The special-sale exclusion notification is a notification indicating that there are special-sale excluded products by display or voice. For example, the notification unit causes a pop-up to be displayed on the store staff display unit 210 to perform the special-sale condition notification.

[0048] Note that when it is determined in the quantity determination that the quantity limit is not exceeded, the notification unit may perform a notification that there are limited-sale products sold at the special-sale price. Also, even when it is determined in the quantity determination that the quantity limit is exceeded, since there are limited-sale products sold at the special-sale price, the notification unit may perform a notification that there are limited-sale products sold at the special-sale price. In this case, for example, the notification unit may perform a notification that there are limited-sale products sold at the special-sale price together with the special-sale exclusion notification.

[0049] Note that the special sale conditions (hereinafter referred to as "pre-sale conditions") may be established before the product registration by the product registration department. The pre-sale conditions are established, for example, by the POS terminal 20 reading member information or coupon information before the product registration. Even when the pre-sale conditions are established, product determination and quantity determination are performed. When the pre-sale conditions are established, product determination and quantity determination are performed at the timing of product registration. Therefore, when the pre-sale conditions are established and it is determined in the quantity determination that the quantity limit is exceeded, a message indicating that a special sale excluded product is to be registered is displayed on the display screen. As a result, the store clerk can grasp that there is a special sale excluded product at the same time as the product registration. Therefore, when the pre-sale conditions are established and it is determined in the quantity determination that the quantity limit is exceeded, the notification unit may not perform the special sale exclusion notification. However, this is not the only case. Even when the pre-sale conditions are established and it is determined in the quantity determination that the quantity limit is exceeded, the notification unit may perform the special sale exclusion notification.

[0050] (Regarding the display of the registered product list) In the present embodiment, the POS terminal 20 includes a display unit. The display unit is, for example, the store clerk side display unit 210. However, the display unit may be the customer side display unit 205. The display unit displays a registered product list indicating the registered products registered by the product registration department. The registered product list is a display indicating the registered products, and for example, is a display indicating the product name, unit price (normal price), purchase amount of the product, discount amount, special sale information (10% OFF, etc.).

[0051] The registered product list is a list capable of displaying a certain number of registered products on the screen. The registered product list, for example, displays the most recently registered product and the products registered earlier based on the product in chronological order. Specifically, when the number of registered products exceeds a certain number, when a new product is registered, among the already registered products, the products registered earlier are no longer displayed on the screen in order. Note that the registered product list may be able to change the number of displayed products according to settings and the like. For example, the registered product list may display all the registered products.

[0052] When it is determined in the quantity determination that the quantity exceeds the quantity limit, the notification unit causes the registered product list to display a special sale restricted product at a special sale price within the range of the quantity limit (hereinafter referred to as "special sale target product") and a special sale restricted product at the normal price that exceeds the quantity limit (special sale excluded product), respectively. For example, the notification unit causes the registered product list to display the special sale target product and the special sale excluded product separately.

[0053] Here, for example, when the number of registered products exceeds a certain number, there may be a case where the special sale restricted product is not displayed on the current display screen. In this case, the notification unit causes the registered product list to display the special sale target product and the special sale excluded product instead of the products on the currently displayed registered product list.

[0054] In addition, the notification unit makes a display indicating that the special sale restricted product at the normal price (special sale excluded product) is not sold at the special sale price. Specifically, the notification unit causes the display area where the special sale excluded product is displayed to be displayed in a mode different from the display area where normal products are displayed (for example, a prominent mode). Note that the display indicating that the special sale excluded product is not sold at the special sale price may be, for example, a display notifying to that effect using characters, symbols, or the like.

[0055] (Regarding the change in the quantity of the special sale restricted product) In this embodiment, the POS terminal 20 includes a reception unit. The reception unit is, for example, the store clerk side display unit 210 or the key operation unit 211. The reception unit receives a change in the quantity of registered products. Further, the reception unit receives a change in the quantity of limited-time sale restricted products. When the reception unit receives a change in the quantity of limited-time sale restricted products, and as a result, a limited-time sale restricted product that had exceeded the quantity limit no longer exceeds the quantity limit, the notification unit notifies to that effect. Specifically, for example, when the quantity limit of a limited-time sale restricted product is "3" and the quantity of the registered limited-time sale restricted product is "5", and a change in the quantity that sets the quantity of the registered limited-time sale restricted product to "3" is received, it is notified that there are no more products excluded from the limited-time sale. The mode of this notification is display or voice. When the mode of notification is display, the mode of this notification may be, for example, in the form of characters or symbols.

[0056] Further, when the reception unit receives a change that reduces the quantity of a limited-time sale restricted product, the subtraction unit reduces the quantity of the limited-time sale restricted product that exceeds the quantity limit. For example, when there are products excluded from the limited-time sale, even if the reception unit receives a change that reduces the quantity of the products subject to the limited-time sale, the subtraction unit preferentially reduces the quantity of the products excluded from the limited-time sale.

[0057] (An example of the process related to the notification of products excluded from the limited-time sale performed by the POS terminal 20) FIG. 5 is a flowchart showing an example of the process related to the notification of products excluded from the limited-time sale performed by the POS terminal 20. In FIG. 5, the POS terminal 20 determines whether or not it satisfies the limited-time sale conditions (step S501). Note that satisfying the limited-time sale conditions means obtaining member information or coupon information, or the purchase amount being equal to or more than a certain amount. The POS terminal 20 waits until it satisfies the limited-time sale conditions (step S501: NO). When it satisfies the limited-time sale conditions (step S501: YES), the POS terminal 20 determines whether or not there are already registered products (registered products) (step S502).

[0058] If there are no registered items (step S502: NO), that is, if the special sale conditions are met before the items are registered, the POS terminal 20 ends the process as it is. If there are registered items (step S502: YES), the POS terminal 20 determines whether the registered items include special sale restricted items (step S503). If the registered items do not include special sale restricted items (step S503: NO), the POS terminal 20 ends the process as it is. If the registered items include special sale restricted items (step S503: YES), the POS terminal 20 determines whether the quantity of the special sale restricted items exceeds the quantity limit (step S504).

[0059] If the quantity of the special sale restricted items does not exceed the quantity limit (step S504: NO), the POS terminal 20 proceeds to step S508. If the quantity of the special sale restricted items exceeds the quantity limit (step S504: YES), a special sale exclusion notification (notification that there are special sale excluded items) is issued (step S505). Then, the POS terminal 20 displays the special sale excluded items (the special sale restricted items are sold at the normal price) (step S506). Further, the POS terminal 20 displays that the special sale excluded items are not sold at the special sale price (step S507). Then, the POS terminal 20 displays the special sale target items (the special sale restricted items are sold at the special sale price) (step S508) and ends the series of processes.

[0060] (An example of the quantity change process of special sale restricted items performed by the POS terminal 20) Figure 6 is a flowchart showing an example of the quantity change process of special sale restricted items performed by the POS terminal 20. In Figure 6, the POS terminal 20 determines whether it has received a subtraction of registered items (step S601). The POS terminal 20 waits until it receives a subtraction of registered items (step S601: NO). When it receives a subtraction of registered items (step S601: YES), the POS terminal 20 determines whether the item for which the subtraction was received is a special sale restricted item (step S602).

[0061] If the item for which subtraction is accepted is a special sale restricted item (Step S602: YES), the POS terminal 20 determines whether the quantity of the special sale restricted item exceeds the quantity limit (Step S603). If the quantity of the special sale restricted item exceeds the quantity limit (Step S603: YES), the POS terminal 20 subtracts the quantity of the item excluded from the special sale (Step S604).

[0062] Then, the POS terminal 20 displays the quantity after subtraction (Step S605) and ends a series of processes. In Step S602, if the item for which subtraction is accepted is not a special sale restricted item (Step S602: NO), the POS terminal 20 subtracts the quantity of the accepted item (Step S606) and proceeds to Step S605. Also, in Step S603, if the quantity of the special sale restricted item does not exceed the quantity limit (Step S603: NO), the POS terminal 20 proceeds to Step S606.

[0063] (An example of the screen displayed on the clerk-side display unit 210 of the POS terminal 20) Next, an example of the screen displayed on the clerk-side display unit 210 of the POS terminal 20 will be described with reference to FIGS. 7 to 11. FIGS. 7 to 11 are explanatory diagrams showing an example of the screen displayed on the clerk-side display unit 210 of the POS terminal 20. FIG. 7(A) shows the screen when 5 bottles of "XX Juice", which is a special sale restricted item, are registered. Specifically, the screen shown in FIG. 7(A) includes a registered item column 701, a registered item list 702, a total amount column 703, a total points column 704, and preset keys 705.

[0064] The registered item column 701 is a display area where the item most recently registered by the clerk (for example, "XX Juice") is displayed. The registered item list 702 is an area where information about the items registered by the clerk is displayed. In FIG. 7(A), the registered item list 702 shows that "XX Juice" is registered, that "XX Juice" is a special sale restricted item, the quantity and unit price (￥100) of "XX Juice", etc.

[0065] The total amount column 703 is a display area where the total amount of registered products (e.g., ¥500) is displayed. The total count column 704 is a display area where the total count of registered products (e.g., 5 items) is displayed. The preset key 705 is a button for accepting setting changes indicated by the displayed content or accepting registration of products indicated by the displayed content. In FIG. 7, the preset key 705 indicates a button for accepting setting changes. However, the preset key 705 can be switched to a button for accepting product registration according to the operation of the store clerk.

[0066] The preset key 705 includes a member card reading button 705a for reading the member card. In FIG. 7(A), when the store clerk presses the member card reading button 705a and reads the member card (member information) using the store clerk side scanner unit 212, the screen shown in FIG. 7(B) is transitioned to.

[0067] As shown in FIG. 7(B), a special sale exclusion notice 710 is displayed on the store clerk side display unit 210. Here, the registered product "○○ Juice" is a special sale restricted product with a quantity limit of "3" for members (see FIG. 4). The current quantity of "○○ Juice" registered is "5", that is, it exceeds the quantity limit of "3", and for the excess amount (2), the special sale becomes invalid. For this reason, as shown in FIG. 7(B), when the POS terminal 20 acquires the member information, the special sale exclusion notice 710 is displayed on the store clerk side display unit 210. The special sale exclusion notice 710 indicates that there is a product for which the special sale has become invalid because the quantity limit of the special sale restricted product has been exceeded. In FIG. 7(B), when the confirmation button 711 is pressed, the screen shown in FIG. 8(A) is transitioned to. In FIG. 7(B), since the POS terminal 20 offers a special sale price for the three "○○ Juices" indicated by the quantity limit of "3", when the POS terminal 20 acquires the member information, it may also display a notice on the store clerk side display unit 210 indicating that there is a special sale restricted product sold at the special sale price.

[0068] The screen shown in Fig. 8(A) includes a member display 801, registered product lists 702a and 702b, a total amount column 703, and a selection reminder notice 810. The member display 801 shows member information obtained by reading the member card. Specifically, the member display 801 shows the member number and the member name.

[0069] The registered product list 702a shows three copies of "XX Juice" that are the products subject to the special sale among the special sale restricted products of "XX Juice". The registered product list 702b shows two copies of "XX Juice" that are the products excluded from the special sale among the special sale restricted products of "XX Juice". In this way, on the store clerk side display unit 210, the registered product list 702a showing the products subject to the special sale and the registered product list 702b showing the products excluded from the special sale are separately displayed. Also, the display area of the registered product list 702b is displayed in a different manner from the display area where normal products and products subject to the special sale are displayed.

[0070] Also, on the registered product list 702a, special sale information indicating 10% OFF, that three copies of "XX Juice" are products subject to the special sale, the amount of discount, etc. are displayed. Also, on the registered product list 702b, that two copies of "XX Juice" are products excluded from the special sale and the total amount for two copies are displayed. The total amount column 703 shows the amount (￥470) obtained by subtracting the discount amount (￥30) for the products subject to the special sale from the amount (￥500) displayed in Fig. 7(A).

[0071] The selection prompt notification 810 indicates a notification that prompts the selection of processing for the special sale exclusion items. The selection prompt notification 810 includes a regular price button 811, a special sale price button 812, and a subtraction button 813. The regular price button 811 is a button that accepts registration at the regular price as it is. The special sale price button 812 is a button that accepts the registration of the special sale exclusion item as a special sale target item. Note that the special sale price button 812 may be displayed only when an authorized store employee such as the store manager operates it. The subtraction button 813 is a button that accepts the subtraction of the special sale exclusion item. In FIG. 8(A), the store employee asks the customer about the processing for the special sale exclusion item and presses one of the buttons according to the customer's answer. For example, assume that the customer tells the store employee that they do not want to purchase (subtract) the special sale exclusion item. Then, when the store employee presses the subtraction button 813, the screen shown in FIG. 8(B) is transitioned to.

[0072] In the example shown in FIG. 7, the case where five "○○ Juice", which are special sale restricted items, are displayed in the registered item list 702 has been described. However, if a plurality of other items are registered after the five "○○ Juice" are registered, the five "○○ Juice" may not be displayed in the registered item list 702. Even in this case, if the member information is read and there are special sale exclusion items, the special sale exclusion notification 710 shown in FIG. 7(B) is performed, and as shown in FIG. 8(A), the special sale target items and the special sale exclusion items may be displayed separately, such as in the registered item lists 702a and 702b.

[0073] As shown in FIG. 8(B), a subtraction acceptance screen 820 is displayed on the store employee side display unit 210. The subtraction acceptance screen 820 includes a quantity display 821 and a quantity change button 822. When the store employee operates the quantity change button 822, the quantity corresponding to the operation is displayed on the quantity display 821. At this time, there are three "○○ Juice" that are special sale target items and two "○○ Juice" that are special sale exclusion items among the special sale restricted items. Among these, the quantity of the special sale exclusion items (two) will be preferentially subtracted.

[0074] The store clerk presses the quantity change button 822 the number of times corresponding to the customer's response regarding the number of items of the limited-time sale items to be purchased. For example, when the number of items of the limited-time sale items to be purchased is set to "3" (when the number of items excluded from the limited-time sale is set to "0"), the store clerk presses the quantity change button 822 so that the quantity display 821 shows "3". Then, when the confirmation button 823 is pressed, the screen shown in Fig. 9(A) is transitioned to.

[0075] As shown in Fig. 9(A), an invalidation release notice 900 is displayed on the store clerk side display unit 210. The invalidation release notice 900 indicates that there are no items excluded from the limited-time sale among the limited-time sale items. Also, the total amount column 703 shows the amount (￥270) after subtracting the amount for the items excluded from the limited-time sale (￥200). The total points column 704 shows the total number of items (e.g., 3 points) after subtracting the points for the items excluded from the limited-time sale (2 points). In Fig. 9(A), when the confirmation button 901 is pressed, the screen returns to the screen where item registration is possible. Then, when further items are registered, the screen shown in Fig. 9(B) is transitioned to.

[0076] Fig. 9(B) shows the screen when 10 "○○ oranges", which are limited-time sale items, are registered. In the registered item column 701, "○○ oranges" and the amount (￥500) are displayed. Also, in the registered item list 702a, there is a display regarding the already registered "○○ juice", specifically, the limited-time sale information indicating a 10% discount, that 3 "○○ juices" are limited-time sale target items, the amount of discount, etc. are displayed.

[0077] In addition, the registered product list 702b displays information about the recently registered "○○ oranges". Specifically, it shows that "○○ oranges" are special sale restricted products and that 10 "○○ oranges" are registered. The total amount column 703 shows the total amount (￥770) obtained by adding the amount of 10 "○○ oranges" (￥500) to the total amount of 3 "○○ juices" (￥270). The total points column 704 shows the total points (13 points) obtained by adding the points of 10 "○○ oranges" (10) to the points of 3 "juices" (3). In Fig. 9(B), when more products are registered, the screen shown in Fig. 10(A) is transitioned to.

[0078] Fig. 10(A) shows the screen when 1 "○○ melon" is registered. The registered product column 701 displays "○○ melon" and the amount (￥1000). The registered product list 702c displays information regarding the registration of the recently registered "○○ melon", specifically indicating that 1 "○○ melon" is registered. The total amount column 703 shows the total amount (￥1770) obtained by further adding the amount of 1 "○○ melon" (￥1000). The total points column 704 shows the total points (14 points) obtained by further adding the points of 1 "○○ melon" (1).

[0079] Here, the registered product "○○ oranges" is a special sale restricted product with a quantity limit of "6" for customers whose purchase amount exceeds ￥1000 (see Fig. 4). Since the "○○ melon" is registered, the total amount (purchase amount) exceeds ￥1000. Also, the quantity of the registered "○○ oranges" is "6", that is, it exceeds the quantity limit of "10". For the excess amount over the quantity limit ("4"), the special sale becomes invalid.

[0080] Therefore, as shown in Fig. 10(B), a special sale exclusion notice 710 is displayed on the store staff display unit 210. The special sale exclusion notice 710 indicates that there is a product for which the special sale has become invalid because the quantity limit of the special sale restricted product (○○ oranges) has been exceeded. In Fig. 10(B), when the confirmation button 711 is pressed, the screen shown in Fig. 11(A) is transitioned to.

[0081] The screen shown in FIG. 11(A) includes registered product lists 702a to 702d, a total amount column 703, and a selection reminder notice 810. The registered product list 702b shows six "XX oranges" that are the products subject to the special sale among the special sale restricted products "XX oranges". The registered product list 702c shows four "XX oranges" that are the products excluded from the special sale among the special sale restricted products "XX oranges".

[0082] In this way, the registered product list 702b showing the products subject to the special sale and the registered product list 702c showing the products excluded from the special sale are displayed separately. Also, the display area of the registered product list 702c is displayed in a different manner from the display area where normal products and products subject to the special sale are displayed.

[0083] Also, on the registered product list 702b, special sale information indicating 20% OFF, that six "XX oranges" are products subject to the special sale, the amount of discount, etc. are displayed. Also, on the registered product list 702c, that four "XX oranges" are products excluded from the special sale and the total amount for four are displayed.

[0084] The total amount column 703 shows the amount (￥1710) obtained by subtracting the discount amount (￥60) for the products subject to the special sale from the amount (￥1770) displayed in FIG. 10(A). Suppose the store clerk asks the customer about the handling of the products excluded from the special sale and presses the normal price button 811 according to the customer's answer. In this case, the screen shown in FIG. 11(B) is transitioned to.

[0085] In the example shown in FIG. 10, the case where ten "○○ oranges", which are special sale restricted items, are displayed in the registered product list 702b has been described. However, if a plurality of other products are registered after the ten "○○ oranges" are registered, the ten "○○ oranges" may not be displayed in the registered product list 702b. Even in this case, when the purchase amount exceeds ¥1000 and there are special sale excluded items, the special sale exclusion notification 710 shown in FIG. 10(B) is performed, and as shown in FIG. 11(A), the registered product lists 702b and 702c are split and displayed so that the special sale target products and the special sale excluded products are shown separately.

[0086] FIG. 11(B) shows a screen when four "○○ oranges" are registered as special sale excluded items (regular price). The display area of the registered product list 702c is displayed in the same manner as the display area where normal products and special sale target products are shown.

[0087] By displaying the screens shown in FIGS. 7 to 11, it is possible to make the store clerk notice that there are special sale excluded items among the special sale restricted items. Then, the store clerk can ask the customer about the handling of the special sale excluded items. Therefore, since the customer's purchase intention regarding the special sale excluded items can be confirmed, it is possible to prevent the registration of products that the customer does not wish to purchase.

[0088] (An example of a receipt issued by the POS terminal 20) FIG. 12 is an explanatory diagram showing an example of a receipt issued by the POS terminal 20. As shown in FIG. 12, on the receipt 1200, the purchase date and time, receipt number, store clerk's information, product information 1201 to 1204 regarding the purchased products, deposit amount, change, etc. are printed. The product information 1201 shows the purchase details regarding "○○ juice". Specifically, the product information 1201 includes the price of three bottles of "○○ juice" and the discount amount reduced by 10% due to the special sale condition of being a member.

[0089] Product information 1202 shows the purchase details regarding "○○ oranges". Specifically, product information 1202 includes the price of 6 "○○ oranges", the discount amount which became 20% off according to the special sale condition that the purchase amount exceeded ¥1000, etc. Product information 1203 shows the purchase details regarding "○○ oranges". Specifically, product information 1203 includes the price of 4 "○○ oranges", the statement that it was not subject to the special sale due to quantity limitation, etc. Product information 1204 shows the purchase details regarding "○○ melons". Specifically, product information 1204 includes the price of 1 "○○ melon", etc.

[0090] By issuing such a receipt 1200, customers can easily grasp whether there are products subject to the special sale or products excluded from the special sale for the special sale restricted products.

[0091] As described above, in this embodiment, when the quantity of the special sale restricted product exceeds the quantity limitation, the POS terminal 20 performs a special sale exclusion notification to notify that there is a special sale excluded product that is not sold at the special sale price. Thereby, the store clerk can be made aware that the special sale excluded product is registered. And the store clerk can ask the customer about the handling of the special sale excluded product. Therefore, since the purchase intention of the customer can be confirmed for the special sale excluded product, it is possible to suppress the situation where a product that the customer does not wish to purchase is registered. For this reason, according to this embodiment, product registration can be suitably performed.

[0092] Also, in this embodiment, the special sale condition is set to obtain member information or coupon information during the product registration. Thereby, even when the POS terminal 20 obtains member information or coupon information when the customer presents a membership card or coupon during the product registration, when there is a special sale excluded product, the special sale exclusion notification can be performed.

[0093] In addition, in the present embodiment, the special sale condition is that the purchase amount reaches a certain amount or more during the registration of the product. As a result, when the purchase amount reaches a certain amount or more during the registration of the product, if there is a special sale exclusion product, a special sale exclusion notification can be issued.

[0094] In addition, in the present embodiment, when there is a special sale exclusion product, the POS terminal 20 is configured to display the special sale target product and the special sale exclusion product in the registered product list respectively. Specifically, the special sale target product and the special sale exclusion product are displayed separately in the registered product list. This makes it easier for the store clerk to recognize the special sale target product and the special sale exclusion product. In addition, the POS terminal 20 can display the details of each of the special sale target product and the special sale exclusion product. Therefore, the store clerk can easily and comprehensively grasp the details of each.

[0095] In addition, in the present embodiment, the POS terminal 20 is configured to display that the special sale exclusion product is not sold at the special sale price. This makes it easier for the store clerk to recognize that there is a special sale exclusion product.

[0096] In addition, in the present embodiment, when the POS terminal 20 accepts a change in the quantity of the special sale restricted product and there is no longer a registration of the special sale exclusion product, the POS terminal 20 is configured to notify the store clerk of this fact. This enables the store clerk to recognize that the registration of the special sale exclusion product has disappeared. As a result, it is possible to more reliably prevent a situation where a product that the customer does not wish to purchase is registered.

[0097] In addition, in the present embodiment, when a change to reduce the quantity of the special sale restricted product is accepted, the POS terminal 20 reduces the quantity of the special sale exclusion product. This can prevent a situation where the registration of the special sale exclusion product remains while the registration of the special sale target product disappears, and thus can prevent a situation that is disadvantageous to the customer.

[0098] (Modification Example of the Embodiment) Next, modifications of the embodiments will be described. In each of the following modifications, the same reference numerals will be given to the content described in the above-described embodiments, and the description will be omitted as appropriate.

[0099] (Modification 1) In the above-described embodiment, a configuration in which a quantity limit for special sales is provided for special sales restricted items has been described. In addition to or instead of such a configuration, in Modification 1, a configuration in which a quantity limit for points given by purchasing special sales restricted items is provided for special sales restricted items will be described. In Modification 1, a point is a privilege given to a customer by awarding 1 point for each purchase of 1 special sales restricted item.

[0100] (An example of a special sales restricted item table according to Modification 1) FIG. 13 is an explanatory diagram showing an example of a special sales restricted item table according to Modification 1. The special sales restricted item table 1300 shown in FIG. 13 is different from the special sales restricted item table 400 shown in FIG. 4 in that it includes an item of "quantity limit for points". Note that the item of "quantity limit for special sales" in the special sales restricted item table 1300 has the same content as the item of "quantity limit" in the special sales restricted item table 400, and the item name is changed to avoid confusion with the "quantity limit for points".

[0101] The quantity limit for points indicates the limit of the sales quantity of special sales restricted items that are the target of point awarding. Specifically, for example, when the quantity limit for points is "5", up to 5 sales of a single special sales restricted item will be awarded 1 point each, that is, up to 5 points will be awarded. In other words, when the quantity limit for points is "5", no points will be awarded when the sales quantity of the special sales restricted item reaches 6 or more.

[0102] To illustrate with an example, the special sale restricted product information 1300a indicates that, on the condition of being a member, up to 3 bottles of "XX Juice" will be sold at a 10% discount off the normal price. Also, the special sale restricted product information 1300a indicates that, on the condition of being a member, up to 5 bottles of "XX Juice" will be given 1 point each.

[0103] In Modification Example 1, for the special sale restricted product "XX Juice", if the purchase is within 3 bottles, it will be sold at the special sale price and 3 points will be given. That is, if the purchase is within 3 bottles, two benefits of special sale and points can be obtained.

[0104] Also, for "XX Juice", if the purchase is 4 or 5 bottles, it will not be sold at the special sale price, and 4 or 5 points will be given. That is, if the purchase is 4 or 5 bottles, only one benefit of points can be obtained.

[0105] Also, for "XX Juice", if the purchase is 6 bottles or more, it will not be sold at the special sale price and no points will be given. That is, if the purchase is 6 bottles or more, no benefits can be obtained.

[0106] In Modification Example 1, the special sale restricted products are displayed in different registered product lists according to the number of benefits obtained. Hereinafter, with reference to FIG. 14, an example of the screen displayed on the clerk side display unit 210 of the POS terminal 20 according to Modification Example 1 will be described.

[0107] (An example of the screen displayed on the clerk side display unit 210 of the POS terminal 20 according to Modification Example 1) FIG. 14 is an explanatory diagram showing an example of the screen displayed on the clerk side display unit 210 of the POS terminal 20 according to Modification Example 1. FIG. 14(A) shows the screen when 6 bottles of the special sale restricted product "XX Juice" are registered.

[0108] In FIG. 14(A), assume that the member card reading button 705a is pressed and the member card (member information) is read using the store clerk side scanner unit 212. Then, when the special sale exclusion notice 710 (see FIG. 7(B)) is displayed and further the confirmation button 711 (see FIG. 7(B)) is pressed, the screen shown in FIG. 14(B) is transitioned to.

[0109] The registered product list 702a shows three copies of "○○ Juice" that are subject to the special sale among the special sale restricted products and are also eligible for point awarding. Specifically, the registered product list 702a displays special sale information indicating 10% OFF, that the three copies of "○○ Juice" are special sale target products, the amount of price reduction, and that 3 points will be awarded.

[0110] The registered product list 702b shows two copies of "○○ Juice" that are excluded from the special sale among the special sale restricted products and are also eligible for point awarding. Specifically, the registered product list 702b displays that the two copies of "○○ Juice" are special sale excluded products, the total amount of the two copies, and that 2 points will be awarded.

[0111] The registered product list 702c shows one copy of "○○ Juice" that is excluded from the special sale among the special sale restricted products and is not eligible for point awarding. Specifically, the registered product list 702c displays that the one copy of "○○ Juice" is a special sale excluded product and the amount of the one copy.

[0112] As described above, in Modification Example 1, the registered product list 702a indicating that two benefits are granted, the registered product list 702b indicating that one benefit is granted, and the registered product list 702c indicating that no benefit is granted are separately displayed. Note that the display area of the registered product list 702b is displayed in a manner different from the display area where normal products and products subject to special sales are displayed. Also, the display area of the registered product list 702c may be displayed in a manner different from the display area where normal products, products subject to special sales, and products excluded from special sales are displayed.

[0113] Note that in Modification Example 1, when a membership card (member information) is read using the store clerk scanner unit 212, if there is a special sales restricted product for which points are not granted (hereinafter referred to as a "point-excluded product") registered, a notification to that effect (hereinafter referred to as a "point-excluded notification") may be made.

[0114] Also, when the point-excluded notification is made, a selection prompting notice 810 may be displayed to prompt a selection of processing for the point-excluded product. Further, in this case, a normal price button 811, a special sales price button 812, and a subtraction button 813 may be displayed to accept a selection of processing for the point-excluded product.

[0115] (Regarding the functional configuration of the POS terminal 20 according to Modification Example 1) Next, the functional configuration of the POS terminal 20 according to Modification Example 1 will be described. In Modification Example 1, a quantity limit for point awarding (hereinafter referred to as a "quantity limit for points") is provided for special sales restricted products. When it is determined in product determination that a special sales restricted product is included, the quantity determination unit performs a quantity determination for points to determine whether the quantity of the special sales restricted product exceeds the quantity limit for points.

[0116] When it is determined that the quantity for points exceeds the quantity limit for points in the quantity determination for points, the notification unit causes the registered product list to display the limited-time sale restricted products (products eligible for points) within the range of the quantity limit for points and the limited-time sale restricted products (products excluded from points) that exceed the quantity limit for points. For example, the notification unit causes the products eligible for points and the products excluded from points to be displayed separately.

[0117] According to Modification 1, when the quantity of the limited-time sale restricted products exceeds the quantity limit for points, the registered product list is configured to display the products eligible for points and the products excluded from points. Thereby, it is possible to make it easier for the store clerk to recognize the products eligible for points and the products excluded from points among the limited-time sale restricted products. For this reason, the store clerk can ask the customer about the handling of the products excluded from points. Therefore, since the purchase intention of the customer can be confirmed for the products excluded from points, it is possible to suppress the registration of products that the customer does not wish to purchase.

[0118] (Modification 2) In the above-described embodiment, regardless of the total points, the configuration in which the limited-time sale restricted products are divided and displayed as the limited-time sale target products and the limited-time sale excluded products has been described. In addition to or instead of such a configuration, in Modification 2, a configuration will be described in which when the total points reach the upper limit number, the limited-time sale restricted products may not be divided and displayed as the limited-time sale target products and the limited-time sale excluded products.

[0119] In Modification Example 2, the POS terminal 20 has a predetermined upper limit on the total number of registrable items. That is, the POS terminal 20 has a predetermined upper limit on the number of levels of the displayable registered item list. This upper limit is, for example, 250. In other words, the maximum number of levels of the displayable registered item list is 250 levels. Therefore, if it is divided and displayed into special sale target items and special sale excluded items and exceeds 250 levels, even if there are special sale target items and special sale excluded items, they cannot be divided and displayed. For this reason, in Modification Example 2, when it is divided and displayed into special sale target items and special sale excluded items and exceeds 250 levels, an error is displayed. Also, when it is divided and displayed into special sale target items and special sale excluded items and exceeds 250 levels, restricted special sale items cannot be registered separately as special sale target items and special sale excluded items.

[0120] (An example of the screen displayed on the clerk side display unit 210 in Modification Example 2) FIG. 15 is an explanatory diagram showing an example of the screen displayed on the clerk side display unit 210 of the POS terminal 20 according to Modification Example 2. FIG. 15(A) shows the screen when 5 "XX Juice", which is a restricted special sale item, is registered at the 250th level of the registered item list 702. Specifically, on the registered item list 702e, it is shown that 5 "XX Juice", which is a restricted special sale item, are registered, as well as the amount (￥500), unit price (￥100), etc. Also, the total points column 704 indicates that the total points of the registered items are 250 points.

[0121] In FIG. 15(A), when the clerk presses the member card reading button 705a and reads the member card (member information) using the clerk side scanner unit 212, the screen shown in FIG. 15(B) is transitioned to.

[0122] As shown in FIG. 15(B), an error notification 1500 indicating that the special sale has been invalidated is displayed on the clerk-side display unit 210. The error notification 1500 is a notification that is displayed because if it is divided and displayed for the special-sale target products and the special-sale excluded products, it will exceed 250 lines, and thus cannot be divided and displayed for the special-sale target products and the special-sale excluded products. When the error notification 1500 is displayed, for example, the clerk can inform the customer that the special sale has been invalidated, and depending on the customer's response, it is possible to subtract the special-sale restricted products or cancel other registered products.

[0123] Note that in the above description, the case where the special-sale restricted products are displayed in the current registered product list has been described. However, there may also be a case where the special-sale restricted products are registered at a line number (for example, the 100th line) that is not displayed in the current registered product list. In this case as well, the error notification 1500 is displayed. For example, if the special-sale restricted products are registered at the 100th line and would exceed 250 lines when divided and displayed for the special-sale target products and the special-sale excluded products, the special-sale target products and the special-sale excluded products cannot be divided and displayed. Therefore, in such a case as well, the error notification 1500 is configured to be displayed.

[0124] (Regarding the functional configuration of the POS terminal 20 according to Modification Example 2) Next, the functional configuration of the POS terminal 20 according to Modification Example 2 will be described. The registered product list has a preset upper limit number (for example, 250) of displayable registered products. Even when it is determined in the quantity determination of the special-sale restricted products that the quantity limit has been exceeded, if the special-sale target products and the special-sale excluded products are each displayed in the registered product list and this would exceed the upper limit number, the notification unit displays an error.

[0125] According to Modification Example 2, it is possible to notify the store clerk that there is a special sale restricted item for which the special sale has become invalid because the total score has reached the upper limit. Then, the store clerk can ask the customer about the handling of the special sale restricted item. Therefore, regarding the special sale restricted item, since the customer's intention to purchase can be confirmed, it is possible to prevent a situation where an item that the customer does not wish to purchase is registered.

[0126] (Modification Example 3) In the above-described embodiment, the configuration for performing the special sale exclusion notification 710 using the store clerk side display unit 210 has been described. In addition to or instead of such a configuration, in Modification Example 3, a configuration for performing the special sale exclusion notification 710 using the customer side display unit 205 will be described.

[0127] In Modification Example 3, when the POS terminal 20 satisfies the special sale conditions such as obtaining member information and the quantity limit of the special sale restricted item is exceeded, the POS terminal 20 causes the customer side display unit 205 to display the special sale exclusion notification 710. Further, when the special sale exclusion notification 710 is to be displayed on the customer side display unit 205, the POS terminal 20 may accept a selection of the handling of the special sale excluded item from the customer or accept a subtraction of the special sale restricted item. Specifically, the POS terminal 20 may also cause the customer side display unit 205 to display a selection prompting notification 810 (see FIG. 8(A)), a subtraction acceptance screen 820 (see FIG. 8(B)), an invalidation cancellation notification 900 (see FIG. 9(A)), etc. Note that it is desirable that the special sale price button 812 included in the selection prompting notification 810 be displayed when an authorized store clerk such as the store manager operates. Therefore, when the selection prompting notification 810 is to be displayed on the customer side display unit 205, the special sale price button 812 may not be displayed.

[0128] In addition, the special sale exclusion notification 710 may be performed using the customer-side display unit 205 even when the POS terminal 20 is controlled in the full self-service mode. In the full self-service mode, the customer is to read coupon information. Therefore, when the coupon is in a paper medium, it may be necessary to collect the coupon. In this case, the POS terminal 20 may call a store clerk when the coupon information is read. Also, for example, if the coupon is a one-time barcode, since it is not necessary to collect the coupon, the store clerk may not be called.

[0129] According to Modification Example 3, among the special sale restricted items, it is possible to directly notify the customer that a special sale excluded item is registered. Therefore, it is possible to suppress the registration of items that the customer does not wish to purchase.

[0130] (Modification Example 4) In the above-described embodiment, the POS system 1 in which the POS terminal 20 receives a product registration operation has been described. In Modification Example 4, a shopping system in which a mobile terminal operated by a customer receives a product registration operation will be described. In Modification Example 4, the shopping system includes a mobile terminal, a settlement device, and a cloud server. The mobile terminal may be a terminal device owned by the customer or a terminal device lent by the store. Also, the mobile terminal may be installed in a shopping cart or held by the customer.

[0131] In the shopping system, the product read by the mobile terminal is registered in the cloud server. Then, at the time of settlement, the settlement device receives registration information used for settlement from the cloud server, and settlement is performed. Hereinafter, the flow from product registration to settlement in the shopping system will be briefly described. (1) The customer uses the camera function of the mobile terminal to read the product code (for example, barcode) attached to the product. When the mobile terminal reads the product code, it transmits the product code information indicated by the read product code to the cloud server. (2) The cloud server stores cart information including cart identification information for identifying the customer (mobile terminal). When the cloud server receives product code information from the mobile terminal, it stores the product indicated by the product code information in the cart information. Note that the mobile terminal transmits the product code information to the cloud server each time at the timing when the product code is read. However, the mobile terminal may sequentially store the read product code information and transmit the product code information to the cloud server all at once at the timing when it receives the start of settlement. (3) When the registration of the product to be purchased is completed, the customer presses the settlement start button displayed on the mobile terminal. When the mobile terminal receives the pressing of the settlement start button, it encodes the cart identification information (for example, a two-dimensional code) and displays it on the display unit (touch panel) of the mobile terminal. (4) Then, the customer causes the reading unit of the settlement device to read the two-dimensional code. When the settlement device reads the two-dimensional code, it transmits the cart identification information indicated by the read two-dimensional code to the cloud server and makes a transmission request for the registration information necessary for settlement to the cloud server. (5) When the cloud server receives the transmission request for the registration information from the settlement device, it specifies the cart information using the cart identification information received together with the transmission request and generates the registration information. Then, the cloud server transmits the generated registration information to the settlement device. (6) When the settlement device receives the registration information from the cloud server, it starts the settlement using the received registration information.

[0132] Next, in Modification Example 4, the case where a special sale exclusion notice (refer to the special sale exclusion notice 710 in FIG. 7(B)) is displayed on the display unit of the mobile terminal will be described. In Modification Example 4, the cloud server includes a product registration unit, a product determination unit, a quantity determination unit, a notification unit, and a subtraction unit. The product registration unit registers the product in the cart information based on the content (product code) read by the mobile terminal. The product determination unit determines whether a special sale restricted product is included in the registered products already registered in the cart information when coupon information is obtained or when the purchase amount reaches a certain amount or more (when the special sale condition is satisfied).

[0133] When the quantity determination unit determines that a special sale restricted item is included in the product determination, it performs a quantity determination on whether the quantity of the special sale restricted item registered in the cart information exceeds the quantity limit. When the notification unit determines that the quantity limit is exceeded in the quantity determination, it controls to transmit information indicating that a special sale exclusion notification (notification that there is a special sale exclusion item) is to be performed to the mobile terminal.

[0134] When the mobile terminal receives information indicating that a special sale exclusion notification is to be performed, it displays the special sale exclusion notification on the display unit of the mobile terminal. Also, the mobile terminal displays a registered product list based on the control of the cloud server (notification unit). Further, the mobile terminal is provided with a reception unit (touch panel), and by the function of the reception unit, it accepts a change in the quantity of the registered product and transmits information indicating the change in quantity to the cloud server. When the subtraction unit of the cloud server receives information indicating a change in quantity from the mobile terminal, it subtracts the quantity of the special sale restricted item that exceeds the quantity limit. The mobile terminal displays on the display unit a screen in which the quantity of the special sale restricted item has been subtracted based on the instruction of the subtraction unit.

[0135] In this way, in the shopping system, it is possible to display a special sale exclusion notification on the display unit of the mobile terminal. As a result, during the shopping process, the customer can be made aware that a special sale exclusion item is registered. And since the customer can perform quantity changes and the like, it is possible to prevent the customer from registering a product that they do not wish to purchase.

[0136] Also, in Modification Example 4, the special sale exclusion notice (refer to the special sale exclusion notice 710 in FIG. 7(B)) is not limited to being displayed on the mobile terminal. For example, the special sale exclusion notice (refer to the special sale exclusion notice 710 in FIG. 7(B)) may be displayed on the settlement device in addition to or instead of the mobile terminal. Specifically, after starting the settlement (after receiving the registration information from the cloud server), the settlement device may obtain member information and coupon information by reading the member card or coupon presented by the customer. In this case, the settlement device transmits the obtained member information and coupon information to the cloud server. When the cloud server receives the member information and coupon information, it performs product determination and quantity determination. Then, when the notification unit of the cloud server determines that the quantity limit is exceeded in the quantity determination, it controls to transmit information indicating that a special sale exclusion notice (a notice indicating that there are special sale exclusion products) is to be issued to the settlement device.

[0137] When the settlement device receives information indicating that a special sale exclusion notice is to be issued from the cloud server, it displays the special sale exclusion notice on the display unit (touch panel) of the settlement device. Also, the settlement device displays a registered product list based on the control of the notification unit of the cloud server. Further, the settlement device includes a reception unit (touch panel), and by the function of the reception unit, it accepts changes in the quantity of the registered products and transmits information indicating the quantity change to the cloud server. When the subtraction unit of the cloud server receives information indicating a quantity change from the settlement device, it subtracts the quantity of the special sale restricted products that exceed the quantity limit. The settlement device displays a screen showing the subtraction of the quantity of the special sale restricted products on the display unit based on the instruction of the subtraction unit.

[0138] In this way, in the shopping system, it is possible to display a special sale exclusion notice on the display unit of the settlement device. Thereby, at the time of settlement, the customer can be made aware that special sale exclusion products are registered. And since the customer can make quantity changes and the like, it is possible to prevent the registration of products that the customer does not wish to purchase.

[0139] In the shopping system, although the configuration in which the customer picks up the product and registers it and then makes the payment has been described, it is not limited to this. For example, a configuration in which the customer registers the product in advance, places an order, and makes the payment at the store terminal (payment device) may also be possible. In the case of such a configuration, when the payment device reads the membership card or coupon presented by the customer at the time of payment, it may transmit the membership information and coupon information to the cloud server, and based on the instructions of the cloud server, display a special sale exclusion notice. Even in such a configuration, it is also possible for the mobile terminal to display the special sale exclusion notice. Specifically, when the mobile terminal acquires the coupon information, it may transmit the coupon information to the cloud server and display the special sale exclusion notice based on the instructions of the cloud server.

[0140] Hereinafter, a summary of the embodiments will be described. [Technical Field] Product sales data processing device, product sales data processing method, and program The present invention relates to a product sales data processing device, a product sales data processing method, and a program. [Background Art] Conventionally, in stores and the like, for example, products may be sold at a discounted price lower than the normal price. Among the products sold at a discounted price, there are quantity-limited products with a limit on the quantity sold at the discounted price. Quantity-limited products may be sold, for example, to customers who meet certain special sale conditions, such as store members or customers who hold coupon tickets. To give an example, a quantity-limited product is a product that is sold at a discounted price (for example, 10 yen off) with a limit of one item per transaction, with the special sale condition being that the customer is a member. In other words, for such quantity-limited products, even if a member purchases two items at the same time, one item will be sold at the discounted price and the other item will be sold at the normal price. As a related technology, there is known a product sales data processing device that notifies the operator of the normal price and the special sale price of a special sale restricted product when the quantity of the special sale restricted product in a transaction exceeds the limit (see, for example, Patent Document 1 below). Here, a product sales data processing device (for example, a POS (Point Of Sales) register) may have a condition (hereinafter referred to as a "special sale condition") such as reading member information after registering a quantity-limited product. Before the special sale condition is satisfied, the product sales data processing device registers the quantity-limited product at the normal price regardless of whether the quantity of the quantity-limited product is within the quantity limit. Then, after registering the quantity-limited product, when the special sale condition is satisfied, the product within the quantity limit is set at the preferential price, and the product exceeding the quantity limit is set at the normal price as it is, and each is registered as one product. [Prior Art Documents] [Patent Documents] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-076016 [Summary of the Invention] [Problems to be Solved by the Invention] However, in the prior art, when the special sale condition is satisfied after registering the quantity-limited product, even if the products within the quantity limit and the products exceeding the quantity limit among the quantity-limited products are registered separately, the store clerk may not notice that the products exceeding the quantity limit have been registered. For example, when there is a product registered after registering the quantity-limited product, since the later-registered product is displayed in the registered product list, the store clerk may not notice that the products exceeding the quantity limit among the quantity-limited products have been registered. As a result, the store clerk cannot confirm the customer's intention to purchase for the products exceeding the quantity limit, and products that the customer does not wish to purchase may be registered. Thus, in the prior art, there is a problem that the registration of products may not be performed suitably. The present invention has been made in view of such circumstances, and an object thereof is to provide a technology capable of suitably performing product registration. [Means for Solving the Problems] In order to solve the above-described problems, a product sales data processing device according to an aspect of the present invention A product registration means for registering products purchased by customers, a product determination means for determining whether a quantity-limited product, which is sold at a discounted price lower than the normal price and has a quantity limit, is included in the already registered products when the conditions for selling the quantity-limited product are met, a quantity determination means for determining whether the quantity of the quantity-limited product exceeds the quantity limit when it is determined in the product determination that the quantity-limited product is included, and a notification means for notifying that there is a quantity-limited product that is not sold at the discounted price when it is determined in the quantity determination that the quantity limit is exceeded. A product sales data processing device characterized by comprising the above. According to the above configuration, it is possible to make the store clerk aware that a quantity-limited product that is not sold at a discounted price is registered. Then, the store clerk can ask the customer about the processing of the quantity-limited product. Therefore, since it is possible to confirm the customer's intention to purchase regarding the quantity-limited product, it is possible to suppress the registration of products that the customer does not wish to purchase. For this reason, product registration can be suitably performed. In the above configuration, the condition may be to obtain member information or coupon information when there are already registered products. According to the above configuration, even when the product sales data processing device obtains member information or coupon information when the customer presents a membership card or coupon during the product registration process, it can notify that there is a quantity-limited product that is not sold at a discounted price when there is such a product. In the above configuration, the condition may be that the purchase amount reaches a certain amount or more when there are already registered products. According to the above configuration, when the purchase amount reaches a certain amount or more during the product registration process, it can notify that there is a quantity-limited product that is not sold at a discounted price when there is such a product. In the above configuration, a display means for displaying a registered product list indicating the registered products is further provided, and when it is determined in the quantity determination that the quantity limit is exceeded, the notification means causes the registered product list to display the quantity-limited product at the preferential price within the range of the quantity limit and the quantity-limited product at the normal price exceeding the quantity limit, respectively. According to the above configuration, it is possible to make it easier for the store clerk to recognize the quantity-limited products sold at the preferential price and the quantity-limited products not sold at the preferential price. Further, the product sales data processing device can display the respective details of the quantity-limited products sold at the preferential price and the quantity-limited products not sold at the preferential price. Therefore, the store clerk can easily and in detail grasp the respective details. In the above configuration, the notification means may perform a display indicating that the quantity-limited product at the normal price is not sold at the preferential price. According to the above configuration, it is possible to make it easier for the store clerk to recognize that there is a quantity-limited product not sold at the preferential price. In the above configuration, a reception means for receiving a change in the quantity of the quantity-limited product is further provided, and when the quantity-limited product that exceeded the quantity limit no longer exceeds the quantity limit due to the change in quantity being received by the reception means, the notification means may notify to that effect. According to the above configuration, it is possible to make the store clerk recognize that the registration of the quantity-limited product not sold at the preferential price has disappeared. Thereby, it is possible to more reliably prevent a product that the customer does not wish to purchase from being registered. In the above configuration, when a change for reducing the quantity of the quantity-limited product is received by the reception means, a subtraction means for reducing the quantity of the quantity-limited product exceeding the quantity limit may be further provided. According to the above configuration, it is possible to suppress a situation where the registration of quantity-limited products not sold at a preferential price remains and the registration of quantity-limited products not sold at a preferential price disappears. Therefore, it is possible to suppress what is disadvantageous to the customer. In order to solve the above problems, a product sales data processing method according to another aspect of the present invention is such that a computer used in a product sales data processing device executes a product registration step of registering a product purchased by a customer, and when a condition for enabling the sale of a quantity-limited product with a quantity limit provided for sale at a preferential price lower than the normal price is satisfied, a product determination step of determining whether or not the quantity-limited product is included in the registered products already registered, a quantity determination step of determining whether or not the quantity of the quantity-limited product exceeds the quantity limit when it is determined in the product determination that the quantity-limited product is included, and a notification step of notifying that there is the quantity-limited product not sold at the preferential price when it is determined in the quantity determination that the quantity exceeds the quantity limit. The product sales data processing method is characterized by this. According to the above configuration, it is possible to make the store clerk notice that there is a quantity-limited product not sold at a preferential price registered. Then, the store clerk can ask the customer about the processing of the quantity-limited product. Therefore, regarding the quantity-limited product, since the customer's intention to purchase can be confirmed, it is possible to suppress the registration of a product that the customer does not wish to purchase. For this reason, product registration can be suitably performed. In order to solve the above problems, a program according to another aspect of the present invention causes a computer used in a product sales data processing device to function as a product registration means for registering products purchased by customers, a product determination means for determining whether or not the quantity-limited products, which are sold at a preferential price lower than the normal price and have a quantity limit for sales, are included in the already registered products when the conditions for selling the quantity-limited products are satisfied, a quantity determination means for determining whether or not the quantity of the quantity-limited products exceeds the quantity limit when it is determined in the product determination that the quantity-limited products are included, and a notification means for notifying that there are quantity-limited products that are not sold at the preferential price when it is determined in the quantity determination that the quantity exceeds the quantity limit. The program is characterized by this. According to the above configuration, it is possible to make the store clerk aware that quantity-limited products that are not sold at the preferential price are registered. Then, the store clerk can ask the customer about the processing of the quantity-limited products. Therefore, since it is possible to confirm the customer's intention to purchase regarding the quantity-limited products, it is possible to suppress the registration of products that the customer does not wish to purchase. For this reason, product registration can be suitably performed.

[0141] Also, in the above product sales data processing device, The quantity-limited products are provided with a quantity limit for point awarding (hereinafter referred to as "quantity limit for points"). When it is determined in the product determination that the quantity-limited products are included, the quantity determination means performs a quantity determination for points to determine whether or not the quantity of the quantity-limited products exceeds the quantity limit for points. When it is determined in the quantity determination for points that the quantity exceeds the quantity limit for points, the notification means may display, in the registered product list, the quantity-limited products within the range of the quantity limit for points and the quantity-limited products that exceed the quantity limit for points. According to the above configuration, it is possible to make it easier for the store clerk to recognize the quantity-limited products eligible for point awarding and the quantity-limited products not eligible for point awarding. Therefore, the store clerk can ask the customer about the handling of the quantity-limited products not eligible for point awarding. Accordingly, regarding the quantity-limited products, since the customer's purchase intention can be confirmed, it is possible to suppress the registration of products that the customer does not wish to purchase.

[0142] Also, in the above-described product sales data processing apparatus, the registered product list has a preset upper limit number of displayable registered products, If the notification means displays both the quantity-limited product at the preferential price within the quantity limit and the quantity-limited product at the normal price exceeding the quantity limit in the registered product list even when it is determined in the quantity determination that the quantity limit is exceeded, and if the upper limit number is exceeded, an error may be displayed. According to the above configuration, it is possible to make the store clerk aware that there are quantity-limited products for which sales at the preferential price are invalidated. And the store clerk can ask the customer about the handling of the quantity-limited products. Accordingly, regarding the quantity-limited products, since the customer's purchase intention can be confirmed, it is possible to suppress the registration of products that the customer does not wish to purchase.

[0143] Note that in the above description, the product registration unit, the product determination unit, the quantity determination unit, the notification unit, the subtraction unit, the display unit, and the reception unit have been described as configurations provided in the POS terminal 20. These functional units may be provided in other computer devices. For example, these functional units may be provided in the store controller 10, may be provided in the monitoring terminal 11, or may be provided in other computer devices (for example, external servers). Also, the computer device having these functional units is not limited to one, and may be a plurality of units. For example, one computer device may have some of these functional units, and another computer device may have other functional units.

[0144] Specifically, in the shopping system shown in Modification Example 4, the product registration unit, the product determination unit, the quantity determination unit, the notification unit, and the subtraction unit are provided in the cloud server. Further, the display unit and the reception unit are provided in a mobile terminal or a settlement device. In this way, it is possible to provide each unit in a different device.

[0145] In the above description, as an example of the product sales data processing device, the POS terminal 20 that receives operations related to the settlement type and the insertion of cash from the customer has been described. However, the product sales data processing device is not limited to this. For example, the product sales data processing device may be a register device having a drawer, and specifically, it may be a register device in which a store clerk inserts cash and takes out change.

[0146] Note that, in order to implement the POS terminal 20 described above, a program may be recorded on a computer-readable recording medium, and the program may be read into a computer system and executed. Here, the "computer system" shall include hardware such as an OS and peripheral devices. Further, the "computer-readable recording medium" shall mean a portable medium such as a flexible disk, a magneto-optical disk, a ROM, a CD-ROM, etc., or a storage device such as a hard disk built into a computer system. Furthermore, the "computer-readable recording medium" shall also include a volatile memory (RAM) inside a computer system that becomes a server or a client when a program is transmitted via a network such as the Internet or a communication line such as a telephone line, and holds the program for a certain period of time. Also, the above program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the "transmission medium" for transmitting the program shall mean a medium having a function of transmitting information such as a network (communication network) such as the Internet or a communication line (communication wire) such as a telephone line. Also, the above program may be for realizing a part of the functions described above. Furthermore, it may be a so-called difference file (difference program) that can realize the functions described above in combination with a program already recorded in a computer system.

Explanation of Signs

[0147] 1…POS system 10…Store controller 11…Monitoring terminal 20…POS terminal 201…CPU 202…ROM 203…RAM 204…Hard disk 205…Customer-side display unit 206…Customer-side scanner unit 208…Card settlement unit 209…Change dispenser 210... Store staff display unit 211... Key operation unit 212... Store staff scanner unit 213... Printing unit 214... Voice output unit 215... Communication unit

Claims

1. A product registration means for registering a product code and a quantity; a display means for displaying in one field the registered product indicated by the product code and the registered quantity indicated by the quantity registered by the product registration means; a product determination means for determining whether the registered product is a limited quantity product that is sold at a special sale price within a maximum quantity range; a quantity determination means for determining whether or not the registered quantity exceeds the upper limit quantity when the product determination means determines that the registered product is a product with a quantity limit; Preparation, The display means includes: When the quantity determination means determines that the registered quantity exceeds the upper limit quantity, a quantity-limited product that is equal to or less than the upper limit quantity and a quantity-limited product that is greater than the upper limit quantity are displayed in separate columns, In the column displaying the quantity-limited products that exceed the upper limit, a notice is displayed indicating that the special sale price does not apply. A product sales data processing device comprising:

2. A computer used in a product sales data processing device, A product registration step of registering a product code and a quantity; a first display step of displaying in one column the registered product indicated by the product code and the registered quantity indicated by the quantity registered in the product registration step; a product determination step of determining whether the registered product is a limited quantity product that is sold at a special sale price within a maximum quantity range; a quantity determination step of determining whether or not the registered quantity exceeds the upper limit quantity when the registered product is determined to be a quantity-limited product in the product determination step; a second display step of displaying, in a case where it is determined in the quantity determination step that the registered quantity exceeds the upper limit quantity, a quantity-limited product equal to or less than the upper limit quantity and a quantity-limited product exceeding the upper limit quantity in separate columns, and displaying a message indicating that the special sale price does not apply in the column displaying the quantity-limited product exceeding the upper limit quantity; A merchandise sales data processing method comprising the steps of:

3. A computer of a product sales data processing device, A product registration means for registering a product code and a quantity; a display means for displaying in one field the registered product indicated by the product code and the registered quantity indicated by the quantity registered by the product registration means; a product determination means for determining whether the registered product is a limited quantity product that is sold at a special sale price within a maximum quantity range; a quantity determination means for determining whether or not the registered quantity exceeds the upper limit quantity when the product determination means determines that the registered product is a product with a quantity limit; Function as a The display means is When the quantity determination means determines that the registered quantity exceeds the upper limit quantity, a quantity-limited product that is equal to or less than the upper limit quantity and a quantity-limited product that is greater than the upper limit quantity are displayed in separate columns, In the column displaying the quantity-limited products that exceed the upper limit, a notice is displayed indicating that the special sale price does not apply. A program characterized by:

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