JP7744879B2 - Sales data processing device and program - Google Patents

Description

Embodiments of the present invention relate to a sales data processing device and program.

Traditionally, there has been a so-called tax exemption system in place where businesses operating export goods sales outlets (duty-free shops) exempt sales items such as goods and services from consumption tax and other taxes on the items they sell to non-residents such as foreign tourists. The tax exemption applies to items purchased by the same non-resident at the same store on the same day. To be eligible for tax exemption, the total amount of either general goods or consumables, or both, must be 5,000 yen or more.

Tax-free transactions are carried out using sales data processing devices such as POS terminals equipped with electronic tax-free functionality, and transaction data showing the details of the transaction is stored in the sales data processing device. The sales data processing device also makes it possible to cancel transactions and return products, and performs cancellation processes such as deleting transaction data or subtracting cash registers depending on the transaction content.

Some duty-free shops are equipped with multiple sales data processing devices. In these cases, each sales data processing device stores transaction data for tax-exempt transactions made on its own sales data processing device locally, and also stores the transaction data on a network-connected server. In this configuration, when a tax-exempt transaction is made, each sales data processing device can determine whether the transaction meets the tax-exempt conditions based on the total amount of the transaction and the total amounts of other transactions involving the same non-resident stored on the server.

However, if a tax-exempt transaction is canceled or the product is returned, the total amount will also change. For example, if the same non-resident makes multiple transactions at the same store using different sales data processing devices, and the cancellation of one transaction causes the total amount to fall below 5,000 yen, the other transactions will no longer meet the tax-exempt conditions.

In this case, the operator must perform operations such as removing the transaction data of other transactions that do not meet the tax-exemption conditions from the tax-exempt scope, but the sales data processing device that performs the cancellation process does not make it easy to check other transactions that do not meet the tax-exemption conditions, so there is room for further improvement in terms of convenience.

For example, if a cancellation process performed on a sales data processing device causes transaction data stored on another sales data processing device to no longer meet the tax-exempt conditions, that transaction data will have to be manipulated, but the operator may not be able to easily confirm that the transaction no longer meets the tax-exempt conditions, which could delay response. This could result in discrepancies in the transaction details between the transaction data stored on the sales data processing device and the transaction data stored on the server.

The problem that this invention aims to solve is to provide a sales data processing device and program that can easily identify transactions that do not meet the tax-exemption conditions.

The sales data processing device of the embodiment is a sales data processing device connected via a network to a server device that associates and stores transaction data indicating a breakdown of tax-free transactions performed on each of a plurality of sales data processing devices, transaction identification information that can identify the tax-free transactions, and user identification information that can identify the user who performed the tax-free transactions. The sales data processing device includes a first acquisition means that acquires product identification information that can identify the products, a second acquisition means that acquires user identification information that can identify the users, a tax-free declaration means that declares a tax-free transaction, and, when a tax-free transaction is declared by the tax-free declaration means, a tax-free system that exempts the tax-free transaction from tax based on the total price of the products corresponding to each of the product identification information acquired by the first acquisition means and the total price of other tax-free transactions related to the user identification information acquired by the second acquisition means, which are stored in the server device. a determination means for determining whether the above conditions are met; a payment means for executing payment processing for the product corresponding to each of the product identification information at a price excluding tax or a price including tax depending on the determination result of the determination means; a storage means for storing transaction data of the tax-free transaction settled by the payment means in the server device in association with the transaction identification information of the tax-free transaction and the user identification information acquired by the second acquisition means; a cancellation means for accepting a cancellation instruction for the tax-free transaction or the product settled in the tax-free transaction and executing a cancellation process in accordance with the cancellation instruction on the transaction data to be processed; and a first output control means for outputting information about another tax-free transaction that does not meet the conditions of the tax-free system if the cancellation process executed by the cancellation means results in the server device detecting that the other tax-free transaction does not meet the conditions of the tax-free system.

FIG. 1 is a schematic diagram of a POS system according to an embodiment. FIG. 2 is a diagram illustrating an example of a hardware configuration of a server device according to the embodiment. FIG. 3 is a diagram showing an example of a data configuration of a tax-free category file according to the embodiment. FIG. 4 is a diagram showing an example of the data configuration of the tax exemption conditions file according to the embodiment. FIG. 5 is a diagram showing an example of the data configuration of the tax-free transaction management file according to the embodiment. FIG. 6 is a diagram illustrating an example of the hardware configuration of a POS terminal according to an embodiment. FIG. 7 is a diagram illustrating an example of a data configuration of a product master file according to the embodiment. FIG. 8 is a diagram showing an example of the data configuration of a transaction management file according to the embodiment. FIG. 9 is a diagram illustrating an example of the functional configuration of a POS terminal and a server device according to an embodiment. FIG. 10 is a diagram illustrating an example of a transaction using the POS system of the embodiment. FIG. 11 is a diagram illustrating an example of a receipt for a store clerk according to the embodiment. FIG. 12 is a flowchart illustrating an example of sales data processing performed by the POS terminal of the embodiment. FIG. 13 is a flowchart illustrating an example of a cancellation process performed by the POS terminal 2 according to the embodiment.

Embodiments of a sales data processing device and program will be described in detail below with reference to the accompanying drawings. In the following embodiments, an example is shown in which the sales data processing device and program are applied to a POS (Point of Sales) terminal installed in an export goods sales outlet (duty-free shop). Furthermore, in the embodiments, "products" are used as examples of items for sale, but the items for sale are not limited to products. The items for sale may also be "services."

Figure 1 is a schematic diagram of a POS system 1 according to an embodiment. As shown in Figure 1, the POS system 1 includes multiple POS terminals 2 and a server device 4. The POS terminals 2 and the server device 4 are connected via a network 3 such as a LAN (Local Area Network).

Figure 2 shows an example of the hardware configuration of the server device 4. The server device 4 includes a computer-based control unit 400 that includes a CPU (Central Processing Unit) 41, ROM (Read Only Memory) 42, RAM (Random Access Memory) 43, etc.

The control unit 400 is connected to a communication I/F (interface) 50 via a bus 49. The server device 4 communicates with multiple POS terminals 2 via the communication I/F 50 and the network 3 (see Figure 1). A controller 44 is also connected to the control unit 400 via the bus 49. A keyboard 45, a display unit 46, and a printer 47 are connected to the controller 44. A hard disk drive (HDD) 48 is also connected to the control unit 400 via the bus 49.

The HDD 48 stores various programs that cause the server device 4 to perform specified operations. The HDD 48 also stores data files such as a tax-exempt category file 481, a tax-exempt condition file 482, and a tax-exempt transaction management file 483.

Figure 3 is a diagram showing an example of the data configuration of the tax-free category file 481. As shown in Figure 3, the tax-free category file 481 has data items for the tax-free category code and the tax-free category name. The tax-free category name is set with data indicating "general goods," "consumables," and "non-tax-free." Here, "consumables" is data indicating the category of tax-free goods related to consumables such as food, beverages, medicines, and cosmetics. "General goods" is data indicating the category of tax-free goods used in everyday life other than consumables. "Non-tax-free" is data indicating the category of goods not eligible for tax-free exemption. In the example of Figure 3, the tax-free category code corresponding to "general goods" is set to "01." The tax-free category code corresponding to "consumables" is set to "02." The tax-free category code corresponding to "non-tax-free" is set to "03."

Figure 4 shows an example of the data structure of the tax-free conditions file 482. As shown in Figure 4, the tax-free conditions file 482 has data items for the tax-free category code and the tax-free conditions. The tax-free conditions are the conditions under which tax-free items are actually treated as tax-free.

In the example shown in Figure 4, the tax-free conditions for tax-free category code "01", i.e., the tax-free conditions for general goods, are that the total amount (excluding tax) for one day at the same store is 5,000 yen or more. Furthermore, the tax-free conditions for tax-free category code "02", i.e., the tax-free conditions for consumables, are that the total amount (excluding tax) for one day at the same store is 5,000 yen or more and 500,000 yen or less. Furthermore, even if the amounts of both the general goods and consumables are less than 5,000 yen, if the total amount is 5,000 yen or more, the general goods are treated as consumables, and the tax-free conditions for tax-free category code "02" are applied.

Figure 5 shows an example of the data structure of the tax-free transaction management file 483. As shown in Figure 5, the tax-free transaction management file 483 has data items such as register number, user ID, transaction number, transaction details, and tax-free flag.

The register number is an example of device identification information that can identify the POS terminal 2 that performed the transaction. In this embodiment, a unique register number is pre-assigned to each POS terminal 2. Note that the identification information for the POS terminal 2 is not limited to this, and may also be, for example, a serial number or IP address.

The user ID is an example of user identification information that can identify the user who performed the transaction. The user ID is the passport number and name written on the passport held by the non-resident user.

The transaction number is an example of transaction identification information that can identify each transaction performed at the POS terminal 2 corresponding to the register number. The transaction number is issued, for example, by the POS terminal 2 that performs the transaction. Note that in this embodiment, the transaction number is a unique number that is not duplicated at each POS terminal 2, but this is not limited to this, and the transaction number may also be a unique number that is not duplicated within POS terminals 2 with the same register number.

The transaction details store information indicating the breakdown of the products purchased in the transaction with the transaction number. For example, the transaction details include product information (product code, product name, price, tax-free category code, etc.) of the product purchased by the user, payment information (total amount, deposit amount, change amount, etc.), and date and time information indicating the date and time the transaction took place. The tax-free flag is binary information used to identify whether the transaction corresponding to the transaction number meets the tax-free conditions. The tax-free flag is set to valid (e.g., "1") if the tax-free conditions are met, and set to invalid (e.g., "0") if the tax-free conditions are not met.

Hereinafter, the set of register number, user ID, transaction number, transaction details, and tax-exempt flag will also be referred to as "tax-exempt transaction data." Furthermore, the set of tax-exempt transaction data, excluding the register number and user ID, will also be referred to as "transaction data."

The control unit 400 of the server device 4 determines whether a transaction performed at the POS terminal 2 satisfies the tax exemption conditions based on the tax exemption conditions file 482, and returns the determination result to the POS terminal 2. The control unit 400 of the server device 4 also stores and manages transaction data for tax-exempt transactions (hereinafter referred to as tax-exempt transactions or simply transactions) performed at each POS terminal 2 as tax-exempt transaction data in the tax-exempt transaction management file 483. In this embodiment, a tax-exempt transaction refers to a transaction for which the tax exemption declaration key 211, described below, has been entered, regardless of whether the tax exemption conditions are met.

Next, we will explain the POS terminal 2. The POS terminal 2 is assigned a unique register number and is located at the checkout area. When an operator operates the POS terminal 2, the POS terminal 2 performs registration processing and payment processing for the products being sold.

The registration process involves optically reading code symbols such as barcodes attached to products being sold and combining them into a product code, displaying product information such as the product name and price of that product code, and storing the product information including the product code in RAM 33 or the like. The payment process involves displaying the total amount based on the product information stored in RAM 33 or the like during the registration process, calculating and displaying the change based on the deposit received from the customer, instructing the change dispenser to dispense the change, and issuing a receipt with the product information and payment information printed on it.

Figure 6 is a diagram showing an example of the hardware configuration of a POS terminal 2. As shown in Figure 6, the POS terminal 2 has a computer-configured control unit 300 made up of a CPU 31, ROM 32, RAM 33, etc. The CPU 31 executes various arithmetic processes and controls each unit. The ROM 32 permanently stores and saves fixed data. The RAM 33 stores rewritable variable data and is used as a work area. The RAM 33 contains a registration table T and the like that stores product information for product codes read from products, for example. The CPU 31, ROM 32, and RAM 33 are connected via a bus 34.

The control unit 300 is connected to the keyboard 21, display unit 22, printer 23, card reader/writer (R/W) 24, scanner 25, passport reader 27, etc. via a bus 34 and controller 35.

The keyboard 21 has various keys arranged in blocks. The various keys include, for example, numeric keys for entering product codes and amounts, a PLU key for specifying various products, a confirmation key for confirming numbers entered using the numeric keys, and a clear key. The keyboard 21 also has a tax exemption declaration key 211, a subtotal key 212, a closing key 213, and a cancel key 214.

The tax exemption declaration key 211 is a key for declaring a tax exempt transaction. The subtotal key 212 is a key for declaring the calculation of the total amount. The closing key 213 is a key for declaring that the sales transaction will be closed with cash. The cancel key 214 is a key for canceling a registered product or declaring the cancellation of a transaction.

The display unit 22 is a liquid crystal display device having a touch panel on the display surface.
The scanner 25 is a device that optically reads code symbols such as barcodes and two-dimensional codes attached to products.

The passport reader 27 is a reader device that reads information stored in a passport. For example, the passport reader 27 has an optical character recognition (OCR) function that optically reads character strings such as a passport number printed on a passport.

The control unit 300 is also connected to a memory unit 26, which is a storage device, via a bus 34. The memory unit 26 is composed of a hard disk drive (HDD), flash memory, etc., and retains its stored contents even when the power is turned off. The memory unit 26 stores various programs that can be executed by the CPU 31, as well as setting information. The memory unit 26 also stores data files such as a product master file 261 and a transaction management file 262.

Figure 7 is a diagram showing an example of the data structure of the product master file 261. As shown in Figure 7, the product master file 261 has data items such as product code, product name, price, and tax-free category code. Here, the product code is an example of product identification information that can identify each product. Data such as the product name, price, and tax-free category code are associated with the product code as product information that indicates the type and attributes of the product. The product name indicates the name of the product corresponding to the product code. The price indicates the price excluding tax of the product corresponding to the product code. The tax-free category code corresponds to the tax-free category code described in Figure 3, and indicates whether the product corresponding to the product code belongs to general goods, consumables, or non-tax-free goods.

Figure 8 is a diagram showing an example of the data structure of the transaction management file 262. As shown in Figure 8, the transaction management file 262 has data items such as transaction number, transaction details, tax exemption flag, and tax exemption declaration key flag. Here, a set of transaction number, transaction details, and tax exemption flag corresponds to transaction data.

The transaction number is an example of transaction identification information that can identify each transaction made at one's own POS terminal 2. The transaction details store product information indicating the breakdown of products purchased in the transaction corresponding to the transaction number, payment information, etc. The tax exemption flag is binary information that identifies whether the transaction corresponding to the transaction number meets the tax exemption conditions.

The tax exemption declaration key flag is binary information used to identify whether or not the tax exemption declaration key flag has been input. The tax exemption declaration key flag is set to valid (e.g., "1") when the tax exemption declaration key flag has been input, and is set to invalid (e.g., "0") when the tax exemption declaration key flag has not been input. In other words, for transactions that meet the tax exemption conditions, the tax exemption flag and tax exemption declaration key flag are set to valid. Furthermore, for transactions that do not meet the tax exemption conditions despite the input of the tax exemption declaration key, the tax exemption flag is set to invalid and the tax exemption declaration key flag is set to valid. Furthermore, for normal transactions, the tax exemption flag and tax exemption declaration key flag are set to invalid.

In the case of a tax-free transaction, the POS terminal 2 will obtain a user ID from the user's passport, and the obtained user ID may be associated with the corresponding transaction number and stored in the transaction management file 262.

Returning to Figure 6, the control unit 300 is further connected to a communication interface (I/F) 28 via a bus 34. The communication interface 28 communicates data with a higher-level device, the server device 4, via a network 3.

With the above configuration, the control unit 300 executes the program stored in the memory unit 26 to control each unit, such as the keyboard 21, display unit 22, printer 23, card reader/writer 24, scanner 25, memory unit 26, passport reader 27, and communication I/F 28, and performs predetermined processing.

Next, we will explain the functional configuration of the POS terminal 2 and server device 4. Figure 9 is a diagram showing an example of the functional configuration of the POS terminal 2 and server device 4.

As shown in FIG. 9, the POS terminal 2 includes a registration unit 301, a tax exemption processing unit 302, a payment processing unit 303, a cancellation processing unit 304, a display output unit 305, and a print output unit 306.

Some or all of the functional components of the POS terminal 2 may be software components implemented through cooperation between the processor (e.g., CPU 31) of the POS terminal 2 and a program stored in memory (e.g., ROM 32, memory unit 26). Also, some or all of the functional components of the POS terminal 2 may be hardware components implemented by a dedicated circuit or the like installed in the POS terminal 2.

The registration unit 301 is an example of a first acquisition means. The registration unit 301 registers the product code and product information of the product to be sold. Specifically, the registration unit 301 drives the scanner 25 via the controller 35 and acquires the product code read by the scanner 25. The registration unit 301 also acquires product information from the product master file 261 based on the product code, and registers the acquired product information in the registration table T in the RAM 33.

The tax exemption processing unit 302 is an example of a second acquisition unit, a tax exemption declaration unit, and a determination unit. The tax exemption processing unit 302 declares a tax exempt transaction in response to input of the tax exemption declaration key 211 and performs processing related to tax exemption. Specifically, the tax exemption processing unit 302 drives the passport reader 27 via the controller 35 and obtains the user ID, such as the passport number, read by the passport reader 27. The tax exemption processing unit 302 also sends a condition determination request to the server device 4, including the user ID and information based on the product information registered in registration table T, and obtains from the server device 4 the determination result as to whether the tax exemption conditions are met. Based on the determination result obtained from the server device 4, the tax exemption processing unit 302 determines whether the tax exemption transaction performed at its own POS terminal 2 satisfies the tax exemption conditions.

If the tax exemption conditions are met, the tax exemption processing unit 302 works in cooperation with the payment processing unit 303 to execute payment processing at the tax-exempt price excluding consumption tax, etc. (hereinafter also referred to as tax exemption processing). Specifically, the tax exemption processing unit 302 executes tax exemption processing for product information registered in registration table T that is determined to meet the tax exemption conditions and has a tax exemption category code including "01" or "02". Furthermore, if the tax exemption conditions are not met, the tax exemption processing unit 302 executes payment processing at the tax-inclusive price including consumption tax, etc.

The tax exemption processing unit 302 may transmit, as a condition determination request, product information with tax exemption category codes "01" and "02" from among the product information registered in registration table T. The tax exemption processing unit 302 may also transmit, as a condition determination request, the total price of products calculated for general goods and consumables based on product information with tax exemption category codes "01" and "02" from among the product information registered in registration table T.

The payment processing unit 303 is an example of a payment means and a storage means. In response to input from the closing key 213, the payment processing unit 303 performs payment processing for the product based on the product information registered in the registration table T. Furthermore, when the payment processing is completed, the payment processing unit 303 stores the transaction data for the transaction related to the payment processing in the transaction management file 262.

In addition, the payment processing unit 303 works in cooperation with the tax exemption processing unit 302 to perform payment processing (tax exemption processing) at a price exclusive of tax, excluding consumption tax, etc. In this case, the payment processing unit 303 stores transaction data in which the tax exemption flag and tax exemption declaration key flag are set to active in the transaction management file 262. Furthermore, even if the tax exemption declaration key 211 is input, if the payment processing is performed at a price including tax, the payment processing unit 303 sets the tax exemption flag to inactive and stores transaction data in which the tax exemption declaration key flag is set to active in the transaction management file 262. Note that if the payment processing is performed as a normal transaction, the payment processing unit 303 stores transaction data in which the tax exemption flag and tax exemption declaration key flag are set to inactive in the transaction management file 262.

In addition, when the payment processing unit 303 sets the tax exemption declaration key flag to enabled, the transaction data for that transaction is stored in the server device 4, and the transaction data is sent to the server device 4 along with the register number of the POS terminal 2 itself, the user ID of the user who performed the transaction, etc.

The cancellation processing unit 304 is an example of a cancellation means and a first output control means. When the cancellation key 214 is input, the cancellation processing unit 304 executes cancellation processing, such as canceling a transaction or returning a product, in accordance with a separately input operation indicating the cancellation content. Specifically, when the transaction number for the transaction to be processed is input, the cancellation processing unit 304 identifies the transaction data corresponding to the transaction number from the transaction management file 262. Next, the cancellation processing unit 304 executes cancellation processing according to the cancellation content based on the identified transaction data. For example, when the cancellation processing unit 304 cancels the transaction itself, it deletes the transaction data to be processed from the transaction management file 262 or moves it to another management file. Furthermore, for example, when the cancellation processing unit 304 cancels (returns) a product, it executes a register-minus process that deletes the product code of the product to be canceled from the transaction data to be processed.

Furthermore, if the transaction data identified from the transaction management file 262 is a tax-exempt transaction, the cancellation processing unit 304 sends a condition determination request including the transaction number of the transaction data and the cancellation details to the server device 4. The cancellation processing unit 304 then obtains from the server device 4 the determination result as to whether the tax-exempt conditions are met after the cancellation processing, and determines whether the tax-exempt conditions are met after the cancellation processing based on the determination result.

For example, when canceling a transaction itself, the cancellation processing unit 304 sends a condition determination request to the server device 4, specifying the transaction number to be canceled and an instruction to cancel the transaction. Also, when processing the return of a specific product purchased in a specific transaction, the cancellation processing unit 304 sends a condition determination request to the server device 4, specifying the transaction number of the transaction, the product code or product information of the product to be returned, and an instruction to cancel the product.

If the tax exemption conditions are still met after the cancellation process, the cancellation processing unit 304 executes the cancellation process on the identified transaction data. The cancellation processing unit 304 then transmits instruction information to the server device 4 instructing the execution of the cancellation content.

Furthermore, if the tax exemption conditions are not met after the cancellation process, the cancellation processing unit 304 displays a confirmation screen on the display unit 22 informing the user that the tax exemption conditions are not met. If an instruction to execute the cancellation process is given after displaying the confirmation screen, the cancellation process is executed based on the identified transaction data.

Furthermore, the cancellation processing unit 304 determines whether there are any other transactions that do not satisfy the tax exemption conditions due to the failure of the tax exemption conditions, and if so, outputs information about the other transactions that do not satisfy the tax exemption conditions via the display output unit 305 and print output unit 306. Here, the information about the other transactions is preferably information that can identify the other transactions that do not satisfy the tax exemption conditions, such as the transaction number of the relevant transaction, the register number of the POS terminal 2 that performed the transaction, and the total amount of the transaction. Note that in this embodiment, the cancellation processing unit 304 determines whether there are any other transactions that do not satisfy the tax exemption conditions based on information about the other transactions sent from the server device 4 along with the determination result that the tax exemption conditions were not satisfied.

The display output unit 305 controls the display output of the display unit 22. For example, the display output unit 305 displays an operation screen on the display unit 22 to assist in operating the POS terminal 2. The display output unit 305 also displays information about each registered product on the display unit 22 based on the data registered in the registration table T. The display output unit 305 also works in cooperation with the tax exemption processing unit 302 to display the results of the tax exemption condition determination on the display unit 22, and to display information about transactions that do not meet the tax exemption conditions on the display unit 22.

The print output unit 306 controls the print output of the printer 23. For example, the print output unit 306 works in cooperation with the payment processing unit 303 to output information indicating the transaction details to the printer 23 and instruct it to print a receipt. The print output unit 306 also works in cooperation with the tax exemption processing unit 302 to output information regarding transactions that do not meet the tax exemption conditions to the printer 23 and instruct it to print a receipt. Hereinafter, receipts printed with information regarding transactions that do not meet the tax exemption conditions will also be referred to as "clerk receipts" to distinguish them from receipts for customers on which the transaction details are printed.

On the other hand, the server device 4 includes a tax exemption condition determination unit 401 and a data management unit 402.

Some or all of the functional configuration of the server device 4 may be software configurations realized by cooperation between the processor (e.g., CPU 41) of the server device 4 and programs stored in memory (e.g., ROM 42, HDD 48). Also, some or all of the functional configuration of the server device 4 may be hardware configurations realized by dedicated circuits or the like installed on the server device 4.

The tax exemption conditions determination unit 401 determines whether a tax exempt transaction performed at each POS terminal 2 satisfies the tax exemption conditions based on the tax exemption conditions file 482. Specifically, in response to a condition determination request sent from the POS terminal 2, the tax exemption conditions determination unit 401 determines whether the transaction details indicated in the condition determination request satisfy the tax exemption conditions, and returns the determination result to the POS terminal 2.

For example, when product information is included in the condition determination request, the tax exemption condition determination unit 401 calculates the total price of products with tax exemption category codes "01" and "02" included in the product information, and determines whether this total price meets the tax exemption conditions in the tax exemption condition file 482. Furthermore, based on the user ID included in the condition determination request, the tax exemption condition determination unit 401 searches the tax exempt transaction management file 483 for tax exempt transaction data including that user ID. The tax exemption condition determination unit 401 then determines whether the sum of the total price of the searched tax exempt transaction data and the total price of the product information included in the condition determination request meets the tax exemption conditions in the tax exemption condition file 482. The tax exemption condition determination unit 401 searches for tax exempt transaction data with a transaction date and time on the same day as the date on which the condition determination request was received.

If the tax exemption conditions determination unit 401 determines that the tax exemption conditions are met, it sends information to the POS terminal 2 notifying that the tax exemption conditions are met. If it determines that the tax exemption conditions are not met, the tax exemption conditions determination unit 401 sends information to the POS terminal 2 notifying that the tax exemption conditions are not met.

Furthermore, for example, if the condition determination request includes cancellation details, the tax exemption condition determination unit 401 determines whether the total amount, minus the transaction or product amounts specified in the cancellation details, satisfies the tax exemption conditions in the tax exemption conditions file 482.

Specifically, when the tax-free condition determination unit 401 identifies the tax-free transaction data corresponding to the transaction number specified in the cancellation details from the tax-free transaction management file 483, it calculates the total amount after the cancellation process based on that tax-free transaction data. For example, if the transaction itself is canceled, the tax-free condition determination unit 401 sets the total amount of the identified tax-free transaction data to zero. Also, for example, if a specific product is canceled, the tax-free condition determination unit 401 calculates the total amount by subtracting the price of the product to be canceled.

Furthermore, the tax-exemption conditions determination unit 401 searches for other tax-exempt transaction data that includes the user ID based on the user ID included in the identified tax-exempt transaction data.The tax-exemption conditions determination unit 401 then determines whether the sum of the total amount of the tax-exempt transaction data after the cancellation process and the total amount of the other tax-exempt transaction data that was searched satisfies the tax-exemption conditions in the tax-exemption conditions file 482.

If the tax exemption conditions determination unit 401 determines that the tax exemption conditions are met, it sends information to the POS terminal 2 notifying that the tax exemption conditions are met. If it determines that the tax exemption conditions are not met, the tax exemption conditions determination unit 401 sends information to the POS terminal 2 notifying that the tax exemption conditions are not met. If there is other tax exempt transaction data for which the tax exemption conditions have not been met due to the cancellation process, the tax exemption conditions determination unit 401 sends information such as the register number, transaction number, and total amount included in that other tax exempt transaction data to the POS terminal 2, along with information notifying that the tax exemption conditions are not met.

The data management unit 402 manages the data in the tax-free transaction management file 483. For example, the data management unit 402 stores transaction data sent from the POS terminal 2 in the tax-free transaction management file 483. Specifically, when a set of register number, user ID, and transaction data is sent from the POS terminal 2, the data management unit 402 stores the set as tax-free transaction data in the tax-free transaction management file 483.

In addition, the data management unit 402 executes a cancellation process on the tax-free transaction data to be processed in response to a cancellation instruction sent from the POS terminal 2. For example, when a cancellation instruction is received for a transaction specifying a transaction number, the data management unit 402 deletes the tax-free transaction data for the corresponding transaction number from the tax-free transaction management file 483 or moves it to another management file. Also, for example, when a cancellation instruction is received for a product specifying a transaction number and product code, the data management unit 402 executes a register-minus process to delete the product code of the specified product from the tax-free transaction data for the corresponding transaction number. Note that if, as a result of the cancellation process, there is tax-free transaction data for which the tax-free conditions are not met, the data management unit 402, in cooperation with the tax-free condition determination unit 401, sets the tax-free flag of the tax-free transaction data for which the tax-free conditions are not met to invalid.

Next, an example of the operation of the POS terminal 2 and server device 4 will be described using Figures 10 and 11.

Figure 10 is a diagram schematically illustrating an example of a transaction using the POS system 1. First, as shown in Figure 10(a), assume that a transaction with transaction number "0001" is made at the POS terminal 2 with register number "01." In this transaction, the user purchases merchandise (general merchandise or consumables) totaling 5,000 yen. If the tax exemption declaration key 211 is entered and a user ID is obtained during the transaction, the tax exemption processing unit 302 of the POS terminal 2 with register number "01" sends a condition determination request to the server device 4, including the registered merchandise information, user ID, etc. In this case, the total amount of the merchandise information included in the condition determination request is 5,000 yen or more, satisfying the tax exemption conditions in the tax exemption condition file 482. Therefore, the tax exemption condition determination unit 401 of the server device 4 determines that the tax exemption conditions are met and sends the determination result to the POS terminal 2 with register number "01."

When the POS terminal 2 with register number "01" receives the determination result from the server device 4, the tax exemption processing unit 302 cooperates with the payment processing unit 303 to complete the tax exemption process for 5,000 yen. The payment processing unit 303 of the POS terminal 2 with register number "01" then transmits the transaction data for the transaction to the server device 4, along with its own register number "01" and the user ID of the user who performed the transaction. The data management unit 402 of the server device 4 stores the transaction data, etc. transmitted from the POS terminal 2 with register number "01" as tax-exempt transaction data in the tax-exempt transaction management file 483.

Continuing with FIG. 10(b), let's assume that the same user as in FIG. 10(a) makes a transaction with transaction number "0006" at the POS terminal 2 with register number "02." In this transaction, the user purchases merchandise (general merchandise or consumables) totaling 100 yen. If the tax-exemption declaration key 211 is entered during the transaction and a user ID is obtained, the tax-exemption processing unit 302 of the POS terminal 2 with register number "02" sends a condition determination request to the server device 4, including the registered merchandise information, user ID, etc. In this case, the sum of the total amount of the tax-exempt transaction data for the transaction in FIG. 10(a) and the total amount of the merchandise information included in the condition determination request is 5,000 yen or more, satisfying the tax-exemption conditions in the tax-exemption conditions file 482. Therefore, the tax-exemption condition determination unit 401 of the server device 4 determines that the tax-exemption conditions are met and sends the determination result to the POS terminal 2 with register number "02."

When the POS terminal 2 with register number "02" receives the determination result from the server device 4, the tax exemption processing unit 302 cooperates with the payment processing unit 303 to complete the tax exemption process for 100 yen. The payment processing unit 303 of the POS terminal 2 with register number "02" then transmits the transaction data for the transaction to the server device 4, along with its own register number "02" and the user ID of the user who performed the transaction. The data management unit 402 of the server device 4 stores the transaction data, etc. transmitted from the POS terminal 2 with register number "02" as tax-exempt transaction data in the tax-exempt transaction management file 483.

10(c), the same user as in the transactions in FIGS. 10(a) and 10(b) conducts a transaction with transaction number "0015" at the POS terminal 2 with register number "03." In this transaction, the user purchases merchandise (general merchandise or consumables) totaling 200 yen. If the tax exemption declaration key 211 is entered during the transaction and a user ID is obtained, the tax exemption processing unit 302 of the POS terminal 2 with register number "03" sends a condition determination request to the server device 4, including the registered merchandise information, user ID, etc. In this case, the sum of the total amount of the tax exemption transaction data for the transactions in FIGS. 10(a) and 10(b) and the total amount of the merchandise information included in the condition determination request is 5,000 yen or more, satisfying the tax exemption conditions in the tax exemption conditions file 482. Therefore, the tax exemption condition determination unit 401 of the server device 4 determines that the tax exemption conditions are met and transmits the determination result to the POS terminal 2 with register number "03."

In the POS terminal 2 with register number "03", which receives the judgment result from the server device 4, the tax exemption processing unit 302 cooperates with the payment processing unit 303 to complete the tax exemption process for 200 yen. The payment processing unit 303 of the POS terminal 2 with register number "03" then transmits the transaction data for the transaction to the server device 4, along with its own register number "03" and the user ID of the user who performed the transaction. The data management unit 402 of the server device 4 stores the transaction data, etc. transmitted from the POS terminal 2 with register number "03" as tax-exempt transaction data in the tax-exempt transaction management file 483.

Next, in Figure 10(d), let's assume that the same user who performed the transactions in Figures 10(a)-(c) returns the product purchased in the transaction in Figure 10(a) (transaction number "0001") at the POS terminal 2 with register number "01." In this case, the operator of the POS terminal 2 with register number "01" enters the cancel key 214, and then enters the transaction number of the transaction to be canceled, which is written on the customer receipt or the like.

The cancellation processing unit of the POS terminal 2 with register number "01" sends the entered transaction number and a condition determination request instructing the server device 4 to cancel the transaction with that transaction number. In this case, the total amount of the tax-free transaction data for the transactions in Figures 10(a) to (c), minus the total amount of the tax-free transaction data for the transaction in Figure 10(a), "5,000 yen," is "300 yen," which does not satisfy the tax-free conditions in the tax-free condition file 482. Therefore, the tax-free condition determination unit 401 of the server device 4 determines that the tax-free condition is not met and sends this determination result to the POS terminal 2 with register number "03."

In this case, since the transactions in Figures 10(b) and (c) do not meet the tax exemption conditions, the tax exemption condition determination unit 401 of the server device 4 reads the transaction number, register number, total amount, etc. from the transaction data related to the transactions in Figures 10(b) and (c), and transmits this, along with the determination result, to the POS terminal 2 with register number "01."

When the POS terminal 2 with register number "01" receives the determination result from the server device 4, the cancellation processing unit 304 displays the contents of the determination result on the display unit 22. For example, if the determination result indicates that the tax exemption conditions are not met, the cancellation processing unit 304 displays a screen on the display unit 22 to confirm whether or not to continue the cancellation process. If an instruction is given to continue the cancellation process, the cancellation processing unit 304 executes the cancellation process by, for example, deleting the transaction data of the corresponding transaction stored in the transaction management file 262. The operator then refunds the amount of the returned product, "5,000 yen," minus the tax amount for the transactions in Figures 10 (b) and (c) that did not meet the tax exemption conditions, to the user, thereby completing the return.

Furthermore, when the cancellation processing unit 304 executes the cancellation processing, it sends a cancellation instruction to the server device 4, specifying the transaction number to be processed and the cancellation details. When the data management unit 402 of the server device 4 receives the cancellation instruction, it executes the cancellation processing by deleting the relevant transaction data based on the instructed details. Furthermore, as a result of the cancellation processing, the data management unit 402 of the server device 4 sets the tax exemption flag of tax-exempt transaction data that does not meet the tax exemption conditions to invalid. For example, if the tax-exempt transaction data with transaction numbers "0006" and "0015" do not meet the tax exemption conditions, the tax exemption flag associated with this tax-exempt transaction data is set to invalid.

Furthermore, if there is another transaction that does not meet the tax exemption conditions as a result of executing the cancellation process, the cancellation processing unit 304 cooperates with the print output unit 306 to print out information about the other transaction that does not meet the tax exemption conditions as a receipt for the store clerk. Specifically, in the example of Figure 10, the cancellation processing unit 304 prints out information about the transactions in Figures 10(b) and (c) as a receipt for the store clerk.

Figure 11 shows an example of a receipt for store clerk. As shown in Figure 11, the receipt for store clerk prints information about transactions that do not meet the tax-free conditions, such as the register number of the POS terminal 2 where the transaction was made, the transaction number, and the transaction amount (total amount). This information can be printed based on information notified from the server device 4.

After checking the clerk receipt, the operator enters the transaction number written on the clerk receipt into the POS terminal 2 corresponding to the register number written on the clerk receipt and performs an operation to disable the tax-exempt flag, for example. For example, in the case of the clerk sheet shown in Figure 11, the operator performs an operation to disable the tax-exempt flag for the transaction data with transaction number "0006" on the POS terminal 2 corresponding to register number "02." Also, for example, the operator performs an operation to disable the tax-exempt flag for the transaction data with transaction number "0015" on the POS terminal 2 corresponding to register number "03."

This allows the transaction data (tax-free transaction data) stored in the server device 4 to be matched with the transaction data stored in each POS terminal 2, ensuring data consistency.

Below, an example of the processing performed by the POS terminal 2 will be described with reference to Figures 12 and 13.

Figure 12 is a flowchart showing an example of sales data processing performed by the POS terminal 2. First, the control unit 300 determines whether a product code identifying a product has been input (step S11). If a product code has been input (step S11; Yes), the registration unit 301 obtains product information for the product corresponding to the input product code from the product master file 261 based on the input product code (step S12). Next, the registration unit 301 registers the obtained product information in registration table T and returns processing to step S11.

If it is determined that a product code has not been entered (Step S11; No), the control unit 300 determines whether the tax exemption declaration key 211 has been entered (Step S13). If the tax exemption declaration key has been entered (Step S13; Yes), the tax exemption processing unit 302 reads the user ID that identifies the user via the passport reader 27 (Step S14). Next, the tax exemption processing unit 302 stores the read user ID in RAM 33 or the like, and returns the process to Step S11.

If it is determined that the tax exemption declaration key 211 has not been entered (step S13; No), the control unit 300 determines whether or not a payment execution instruction has been issued by operating the closing key 213 or the like (step S15). If a payment execution instruction has not been issued (step S15; No), the control unit 300 returns the process to step S11.

If an instruction to execute payment is given (Step S15: Yes), the payment processing unit 303 determines whether the tax exemption declaration key 211 has been input (Step S16). For example, the payment processing unit 303 determines whether the tax exemption declaration key 211 has been input based on whether the user ID is stored in RAM 33. Note that the tax exemption declaration key 211 may be input after an instruction to execute payment is given.

If the tax exemption declaration key 211 has not been entered (Step S16: No), the payment processing unit 303 executes payment processing for the product at the tax-inclusive price based on the product information registered in registration table T (Step S17). The payment processing unit 303 then associates the transaction data for the transaction with a transaction number that identifies the transaction and stores it in the transaction management file 262 (Step S18), and terminates this processing. Note that in Step S18, the transaction data is stored with the tax exemption flag and tax exemption declaration key flag set to disabled.

On the other hand, if the tax exemption declaration key 211 has already been entered (Step S16: Yes), the tax exemption processing unit 302 sends a condition determination request to the server device 4, including the product information registered in the registration table T and the user ID, etc., stored in RAM 33 (Step S19).

When the server device 4 receives the condition determination request, the tax exemption condition determination unit 401 determines whether the tax exemption conditions are met based on the total amount calculated based on the product information and the total amounts of other transactions stored in association with the user ID, and sends the determination result to the POS terminal 2 that made the request. The tax exemption processing unit 302 then determines whether the tax exemption conditions are met based on the determination result sent from the server device 4 (step S20).

If the tax-free conditions are not met (Step S20: No), the payment processing unit 303 executes payment processing for the product at the tax-inclusive price based on the product information registered in registration table T (Step S21). The payment processing unit 303 then proceeds to Step S23 to store the transaction data for the transaction.

Also, if the tax exemption conditions are met (step S20; Yes), the payment processing unit 303, in cooperation with the tax exemption processing unit 302, executes payment processing for the product at the price excluding tax based on the product information registered in registration table T (step S22), and proceeds to step S23.

In step S23, the payment processing unit 303 stores the transaction data of the transaction in the transaction management file 262 in association with the transaction number that identifies the transaction (step S23). In step S23, the transaction data that was payment processed in step S21 is stored with the tax exemption flag set to disabled and the tax exemption declaration key flag set to enabled. Furthermore, the transaction data that was payment processed (tax exemption processing) in step S22 is stored with the tax exemption flag and tax exemption declaration key flag set to enabled.

The reason why transaction data (tax-free transaction data) is sent to the server device 4 even when the tax-free conditions are not met is because the tax-free conditions may be met when added together with other future transactions by the same user. As a result, regardless of which POS terminal 2 a transaction is made at, by referencing past tax-free transaction data stored in the server device 4, it is possible to determine whether the tax-free conditions are met based on the total amount including transactions made at other POS terminals 2.

Figure 13 is a flowchart showing an example of the cancellation process performed by the POS terminal 2. First, the control unit 300 waits until the cancellation key 214 is input (step S31; No). When the cancellation key 214 is input (step S31; Yes), the cancellation processing unit 304 waits until the transaction number of the transaction to be canceled is input (step S32; No). When the transaction number is input (step S32; Yes), the cancellation processing unit 304 determines whether transaction data corresponding to the input transaction number exists in the transaction management file 262 (step S33).

If there is no transaction data corresponding to the input transaction number (Step S33: No), the cancellation processing unit 304 returns the process to Step S31. In other words, in this embodiment, the transaction to be canceled can be canceled at the POS terminal 2 where the transaction to be canceled was made. Note that if there is no transaction data corresponding to the transaction number, the cancellation processing unit 304 may display a message on its own POS terminal 2 informing users that there is no transaction data to be canceled.

If transaction data corresponding to the entered transaction number exists (Step S33; Yes), the cancellation processing unit 304 determines whether the tax exemption declaration key flag associated with the transaction data is valid (Step S34). If the tax exemption declaration key flag is invalid (Step S34; No), the cancellation processing unit 304 determines that the transaction is a normal transaction, performs cancellation processing on the transaction data to be processed according to the cancellation content entered separately (Step S35), and terminates this processing.

Also, if the tax exemption declaration key flag is enabled (step S34; Yes), the cancellation processing unit 304 determines whether the tax exemption flag is enabled (step S36).

Here, if the tax exemption flag is invalid (Step S36; No), the cancellation processing unit 304 executes cancellation processing according to the separately input cancellation content on the transaction data to be processed (Step S37). Next, the cancellation processing unit 304 transmits a cancellation instruction including the transaction number, cancellation content, etc. to the server device 4 in order to reflect the cancellation processing executed in Step S37 in the corresponding transaction data (tax-exempt transaction data) stored in the server device 4 (Step S38), and terminates this processing.

As a result, the data management unit 402 of the server device 4 executes the cancellation process specified in the instruction for the tax-free transaction data (transaction data) in question in response to the cancellation instruction sent from the POS terminal 2.

On the other hand, if the tax exemption flag is enabled (Step S36: Yes), the cancellation processing unit 304 sends a condition determination request including the transaction number, cancellation details, etc. to the server device 4 (Step S39). When the server device 4 receives the condition determination request, the tax exemption condition determination unit 401 calculates the total amount of the transaction based on the transaction data of the transaction corresponding to the specified transaction number if the cancellation processing instructed in the cancellation details is performed. The tax exemption condition determination unit 401 also adds up the calculated total amount and the total amount of other transactions including the user ID corresponding to the specified transaction number, and determines whether the tax exemption conditions are met based on this total amount. The tax exemption condition determination unit 401 then sends the determination result to the POS terminal 2 that made the request. Note that if the cancellation processing would result in the tax exemption conditions of other transactions not being met, the tax exemption condition determination unit 401 sends the determination result and information about the other transactions for which the tax exemption conditions are not met (transaction number, register number, total amount, etc.) to the POS terminal 2 that made the request.

Then, the cancellation processing unit 304 determines whether the tax exemption conditions are met based on the determination result sent from the server device 4 (step S40). If the tax exemption conditions are met (step S40; Yes), the cancellation processing unit 304 proceeds to step S37 and performs cancellation processing according to the cancellation content on the transaction data to be processed.

On the other hand, if the tax exemption conditions are not met (Step S40; No), the cancellation processing unit 304 displays a message on the display unit 22 confirming that the tax exemption conditions are no longer met (Step S41) and waits for input from the operator. If an operation to stop the cancellation process is input here (Step S42; No), the cancellation processing unit 304 terminates this process.

Furthermore, if an operation to execute a cancellation process is input (Step S42; Yes), the cancellation processing unit 304 executes a cancellation process according to the cancellation content on the transaction data to be processed (Step S43). Next, the cancellation processing unit 304 transmits a cancellation instruction including the transaction number, cancellation content, etc. to the server device 4 in order to reflect the cancellation process executed in Step S43 in the corresponding transaction data (tax-exempt transaction data) stored in the server device 4 (Step S44).

Next, the cancellation processing unit 304 determines whether there is a transaction that does not satisfy the tax exemption conditions based on the determination result of the server device 4 (step S45). If there is no transaction that does not satisfy the tax exemption conditions (step S45; No), the cancellation processing unit 304 terminates this process.

If there is a transaction that does not meet the tax-free conditions (Step S45: Yes), the cancellation processing unit 304 outputs a receipt for the store clerk on which information about the transaction that does not meet the tax-free conditions is printed (Step S46), and this process ends.

As described above, when a tax-free transaction is performed on the POS terminal 2 of this embodiment by operating the tax-free declaration key 211, the POS terminal 2 determines whether the tax-free transaction satisfies the tax-free conditions based on the total amount of the tax-free transaction and the total amount of other tax-free transactions related to the same user stored in the server device 4. Depending on the result of this determination, the POS terminal 2 then executes the payment process for the registered product at the tax-exempt price or the tax-inclusive price. The POS terminal 2 then stores the transaction data of the tax-free transaction settled in the payment process in the server device 4, in association with the transaction number and user ID.

In addition, when each POS terminal 2 of this embodiment receives an instruction to cancel a tax-free transaction or an item paid for in a tax-free transaction by operating the cancel key 214, it executes a cancellation process in accordance with the cancellation command on the transaction data to be processed. If the POS terminal 2 executes a cancellation process on the server device 4 that does not meet the tax-free conditions due to the cancellation process executed by the POS terminal 2 itself, it outputs information about the other tax-free transaction. For example, the POS terminal 2 outputs the transaction number of the tax-free transaction that does not meet the tax-free conditions, the register number of the POS terminal 2 where the tax-free transaction was performed, the total amount, etc.

This allows the operator of the POS terminal 2 to easily check other transactions that do not meet the tax-free conditions, making it easy to identify the relevant transaction data and the POS terminal 2 on which the transaction was made. In this way, with the POS terminal 2 of this embodiment, if the transaction data of another transaction stored in another POS terminal 2 no longer meets the tax-free conditions due to, for example, a cancellation process executed on the POS terminal 2 itself, the transaction data can be easily identified and manipulated. Therefore, in this embodiment, it is possible to ensure consistency between the transaction data stored in the sales data processing device and the transaction data stored in the server device 4.

The above-described embodiments can be modified as needed by changing some of the configurations or functions of the above-described devices. Therefore, below, several modifications of the above-described embodiments will be described as other embodiments. Below, differences from the above-described embodiments will be mainly described, and detailed descriptions of commonalities with the contents already described will be omitted. The modifications described below may be implemented individually or in appropriate combinations.

(Variation 1)
In the above embodiment, information about a transaction that no longer satisfies the tax-exemption conditions due to a cancellation process is output. However, there may also be existing transactions that satisfy the tax-exemption conditions due to a newly executed payment process. For example, among the transactions (a) to (c) illustrated in FIG. 10, suppose the same user first executes transactions (b) and (c) and then executes transaction (a) last. In this case, transactions (b) and (c) do not satisfy the tax-exemption conditions, but transaction (a) satisfies the tax-exemption conditions for all of transactions (a) to (c). In this case, the POS terminal 2 that executes transaction (a) cannot easily confirm transactions (b) and (c), which satisfy the tax-exemption conditions.

Therefore, if there is another transaction for which the tax exemption conditions are met as a result of the newly performed payment process, the system may be configured to output information about that other transaction, as in the above-described embodiment.

Specifically, the tax exemption condition determination unit 401 of the server device 4 determines whether the tax exemption conditions are met in response to a condition determination request sent from the tax exemption processing unit 302, as in the above-described embodiment. If the tax exemption condition determination unit 401 determines that the conditions are met, it determines whether other transactions by the same user for which the tax exemption conditions had not previously been met have now met the tax exemption conditions, and if so, it sends information about those other transactions, along with the determination result, to the POS terminal 2 that made the request.

On the other hand, when payment processing (tax exemption processing) is performed, the tax exemption processing unit 302 of the POS terminal 2 cooperates with the payment processing unit 303 to determine, based on information sent from the server device 4, whether there are any other transactions for which the tax exemption conditions have been met. The tax exemption processing unit 302 then displays or prints out information about the other transactions for which the tax exemption conditions have been met as a receipt for the store clerk. In other words, the tax exemption processing unit 302 functions as an example of second output control means.

This allows the operator of the POS terminal 2 to easily check other transactions for which the tax exemption conditions have been met, making it easy to identify the relevant transaction data and the POS terminal 2 on which the transaction was carried out. In this way, with the POS terminal 2 of this modified example, if the transaction data of another transaction stored in another POS terminal 2 meets the tax exemption conditions, for example, due to the tax exemption processing executed on the POS terminal 2 itself, the operator can easily identify and manipulate that transaction data. Therefore, in this embodiment, it is possible to ensure consistency between the transaction data stored in the sales data processing device and the transaction data stored in the server device 4.

(Variation 2)
In the above embodiment, the tax exemption conditions determination unit 401 provided in the server device 4 determines whether the tax exemption conditions are met based on the tax exempt transaction data stored in the server device 4. However, the present invention is not limited to this. For example, each POS terminal 2 may be provided with a functional unit similar to the tax exemption conditions determination unit 401, so that each POS terminal 2 individually determines whether the tax exemption conditions are met based on the tax exempt transaction data stored in the server device 4.

In this case, the server device 4 functions, for example, as a database server that stores and manages tax-free transaction data, and the tax-free condition determination unit 401 provided in each POS terminal 2 references the tax-free transaction data stored in the server device 4 and determines whether a transaction performed at that device satisfies the tax-free conditions. In this case, the tax-free condition determination unit 401 of the POS terminal 2 functions as an example of a determination means.

In this case, the server device 4 functions, for example, as a database server that stores and manages tax-free transaction data, and the tax-free condition determination unit 401 provided in each POS terminal 2 references the tax-free transaction data stored in the server device 4 and determines whether a transaction performed at that device satisfies the tax-free conditions. In this case, the tax-free condition determination unit 401 of the POS terminal 2 functions as an example of a determination means.

(Variation 3)
In the above-described embodiment, each POS terminal 2 is capable of canceling transaction data stored in its own POS terminal 2, but this is not limited to this, and the configuration may also be such that it is possible to handle transaction data stored in other POS terminals 2.

For example, if a transaction executed at another POS terminal 2 no longer satisfies the tax exemption conditions due to the execution of the cancellation process, the cancellation processing unit 304 accesses that other POS terminal 2 based on the register number notified by the server device 4. The cancellation processing unit 304 then invalidates the tax exemption flag for the transaction data with the transaction number that no longer satisfies the tax exemption conditions, among the transaction data stored in the transaction management file 262 of the accessed POS terminal 2.

As a result, if a transaction executed at another POS terminal 2 no longer meets the tax exemption conditions due to the execution of a cancellation process, the POS terminal 2 can automatically manipulate the transaction data related to that transaction, thereby improving convenience. Note that the cancellation processing unit 304 may also be configured to display a screen on the display unit 22 prompting the operator for confirmation when manipulating the transaction data, and manipulate the transaction data related to the other transaction when instructed to do so.

The various programs used in the sales data processing device of this embodiment and its variations may be provided as installable or executable files recorded on a computer-readable recording medium such as a CD-ROM, flexible disk (FD), CD-R, or DVD (Digital Versatile Disk), and may be loaded and executed on the sales data processing device's HDD, flash ROM, etc.

The program may also be stored on a computer connected to a network such as the Internet and provided by downloading it via the network.

In the above embodiments and variations thereof, the configuration of the sales data processing device and program have been described, but the embodiments and variations thereof are presented as examples and are not intended to limit the scope of the invention. These new embodiments and variations may be embodied in a variety of other forms, and various omissions, substitutions, and modifications may be made without departing from the spirit of the invention. These embodiments and variations thereof are included within the scope and spirit of the invention, as well as within the scope of the invention and its equivalents as set forth in the claims.

REFERENCE SIGNS LIST 1 POS system 2 POS terminal 3 Network 4 Server device 301 Registration unit 302 Tax exemption processing unit 303 Settlement processing unit 304 Cancellation processing unit 305 Display output unit 306 Print output unit 401 Tax exemption condition determination unit 402 Data management unit

JP 2016-91214 A

Claims (6)

A sales data processing device connected via a network to a server device that stores transaction data indicating a breakdown of tax-free transactions performed in each of a plurality of sales data processing devices, transaction identification information that can identify the tax-free transactions, and user identification information that can identify the users who performed the tax-free transactions, in association with each other;
a first acquisition means for acquiring product identification information capable of identifying a product;
a second acquiring means for acquiring user identification information capable of identifying a user;
a tax exemption declaration instrument for declaring tax exempt transactions;
a determination means for determining, when a tax-free transaction is declared by the tax-free declaration means, whether or not the tax-free transaction satisfies the conditions of a tax-free system for exempting tax, based on the total price of the products corresponding to each of the product identification information acquired by the first acquisition means and the total price of other tax-free transactions related to the user identification information acquired by the second acquisition means, which are stored in the server device;
a payment means for executing payment processing for the product corresponding to each of the product identification information at a tax-exempt price or a tax-inclusive price according to the determination result of the determination means;
a storage means for storing transaction data of the tax-free transaction settled by the payment means in the server device in association with transaction identification information of the tax-free transaction and the user identification information acquired by the second acquisition means;
a cancellation means for receiving a cancellation instruction for the tax-free transaction or the product paid for in the tax-free transaction, and executing a cancellation process in accordance with the cancellation instruction on the transaction data to be processed;
a first output control means for outputting information on another tax-free transaction that does not satisfy the conditions of the tax-free system when the server device detects another tax-free transaction that does not satisfy the conditions of the tax-free system due to the cancellation process executed by the cancellation means;
A sales data processing device comprising: The sales data processing device described in claim 1, wherein the first output control means outputs transaction identification information of other tax-exempt transactions that do not meet the conditions of the tax-exempt system as information about such other tax-exempt transactions. The sales data processing device described in claim 2, wherein the first output control means outputs the total price of the products included in the transaction data of other tax-free transactions that do not meet the conditions of the tax-free system as information about the other tax-free transactions. the server device stores the transaction data indicating the breakdown of the tax-free transaction in association with device identification information capable of identifying the sales data processing device in which the tax-free transaction was made;
4. The sales data processing device according to claim 2, wherein the first output control means outputs device identification information of the sales data processing device in which the other tax-free transaction was conducted as information regarding the other tax-free transaction that does not meet the conditions of the tax-free system. The sales data processing device of claim 1 further comprises a second output control means that, if another tax-free transaction that satisfies the conditions of the tax-free system is present on the server device as a result of the payment processing executed by the payment means, outputs information about that other tax-free transaction. A computer of the sales data processing device connected via a network to a server device that stores transaction data indicating a breakdown of tax-free transactions performed by each of a plurality of sales data processing devices, transaction identification information that can identify the tax-free transactions, and user identification information that can identify the users who performed the tax-free transactions, in association with each other;
a first acquisition means for acquiring product identification information capable of identifying a product;
a second acquiring means for acquiring user identification information capable of identifying a user;
a tax exemption declaration instrument for declaring tax exempt transactions;
a determination means for determining, when a tax-free transaction is declared by the tax-free declaration means, whether or not the tax-free transaction satisfies the conditions of a tax-free system for exempting tax, based on the total price of the products corresponding to each of the product identification information acquired by the first acquisition means and the total price of other tax-free transactions related to the user identification information acquired by the second acquisition means, which are stored in the server device;
a payment means for executing payment processing for the product corresponding to each of the product identification information at a tax-exempt price or a tax-inclusive price according to the determination result of the determination means;
a storage means for storing transaction data of the tax-free transaction settled by the payment means in the server device in association with transaction identification information of the tax-free transaction and the user identification information acquired by the second acquisition means;
a cancellation means for receiving a cancellation instruction for the tax-free transaction or the product paid for in the tax-free transaction, and executing a cancellation process in accordance with the cancellation instruction on the transaction data to be processed;
a first output control means for outputting information on another tax-free transaction that does not satisfy the conditions of the tax-free system when the server device detects another tax-free transaction that does not satisfy the conditions of the tax-free system due to the cancellation process executed by the cancellation means;
A program to make it function as such.