Patent Description:
Conventionally, when purchasing merchandise abroad, a traveler looks at the price displayed in the local currency and pays for the merchandise. When the travel destination is Japan, for example, the traveler needs to look at the price displayed in Japanese yen to make payment. If the traveler uses his/her credit card to make payment, the amount of payment will be determined at a later date at an exchange rate at a time point determined by a credit card company.

<CIT> relates to a mobile terminal that can display a price in a home currency of its user after converting a price in a foreign currency identified in an image captured by the camera of the mobile terminal.

There has been a problem, however, in the above-described traditional method that the amount of payment in the home currency is difficult to ascertain. When the travel destination is Japan, for example, with the price displayed in Japanese yen, the traveler does not know the price in his/her home currency. If the traveler uses a credit card to make payment, the amount of payment will be fixed at a later date at an exchange rate at a time point determined by the credit card company, and therefore the traveler will not know the amount of payment at the time of making payment.

To solve the above issue and achieve a purpose of the embodiments, a settlement system according to claim <NUM> and a settlement method according to claim <NUM> are provided.

The present embodiments produce an effect of allowing a user to purchase merchandise in his/her home currency while checking the price in the home currency.

Embodiments of a settlement system and a settlement method according to the present invention will be described in detail below with reference to the drawings. The settlement system and settlement method according to the present invention, however, should not be limited by these embodiments.

In the following description, the outline of a settlement system <NUM> according to the first embodiment, the configuration of a server <NUM>, and the configuration of a merchant device <NUM> will be described in order, and finally the effects of the first embodiment will be discussed. In the following description of the embodiment, a credit card is used for the purchase of merchandise. The purchase is not limited thereto, however, and merchandise may be purchased using a debit card or a QR code (trademark).

<FIG> is a diagram showing the outline of a settlement system according to the first embodiment. The settlement system <NUM> according to the first embodiment includes a server <NUM>, a merchant device <NUM>, a terminal <NUM>, a payment gateway <NUM>, and a credit card company <NUM>. The configuration of <FIG> is presented merely as an example, and therefore the detailed configuration and the number of devices are not limited thereto.

The settlement system <NUM> offers services with which, when charging a purchase to a credit card at a merchant overseas, the user can check the amount of payment in his/her home currency and make the purchase in the home currency based on the presently fixed exchange rate.

In the following description with reference to <FIG>, a situation of an American credit card user traveling to Japan will be discussed. In this example, the home country of the user is the United States, and therefore the United States is denoted as the first country and Japan is denoted as the second country.

The server <NUM> of the settlement system <NUM> reports the exchange rate good for a certain period of time to devices in the credit-card affiliated merchants, at certain occasions. The server <NUM> may report the exchange rate of the day daily. The server <NUM> may determine in any manner the exchange rate to be reported.

The server <NUM> performs control to determine the amount of payment to the merchant device <NUM> based on the sales information reported by the merchant device <NUM> and the exchange rate of the purchase time and pay the determined amount to the merchant device <NUM> in the currency of the second country, which is the home currency for the merchant device <NUM>. For instance, the server <NUM> receives the user's payment from the payment gateway <NUM> in dollars (US dollars), converts the currency from US dollars to Japanese yen, and pays to a Japanese merchant device <NUM> in Japanese yen.

The merchant device <NUM> is an information processor that realizes settlement for credit-card affiliated merchants at which settlements can be made on credit cards, and the merchant device <NUM> may be realized by a server or a cloud system. Based on the exchange rate reported by the server <NUM>, the merchant device <NUM> performs control in a manner such that the amount of payment for the purchased merchandise is displayed on the terminal <NUM> in the currency of the first country designated by the user. For instance, the merchant device <NUM> calculates the amount of payment in dollars from the price in Japanese yen of an item that the credit card user wishes to purchase and the exchange rate, and displays the calculated amount of payment in dollars on the terminal <NUM> of the credit card user.

Furthermore, if the credit card user purchases merchandise on a credit card, the merchant device <NUM> notifies the server <NUM> of the sales information in the currency of the first country, calculated based on the exchange rate reported by the server <NUM>. The credit-card affiliated merchants are not limited to convenience stores and other bricks-and-mortar shops, but may be electronic commerce (EC) sites that conduct sales operations on websites.

The terminal <NUM> is a smart device such as a smartphone or a tablet, which is a mobile terminal apparatus capable of communicating with a server through a wireless communication network. The terminal <NUM> may be an information processing apparatus such as a desktop personal computer (PC) or notebook PC. The terminal <NUM> has a function of specifying the current location through the use of a positioning system such as a global positioning system (GPS) and outputting the location information indicating the specified location.

The payment gateway <NUM> includes an information processor or the like configured to offer services of overall credit card settlement transactions including data processing and transaction processing, to merchants in the non-face-to-face market of credit card shopping. The payment gateway <NUM> may be implemented by a server or a cloud system. The credit card company <NUM> includes an information processor or the like configured to perform a credit card settlement, which is a deferred payment for the purchase of merchandise. This information processor may be implemented by a server or a cloud system.

With the settlement system <NUM>, an amount of payment can be displayed on the terminal <NUM> when the credit card user purchases merchandise in a foreign travel destination country. In addition, the amount of settlement can be fixed to the price in the home currency displayed at the time of purchase. Furthermore, with the settlement system <NUM>, the credit card payment flow remains unchanged for the credit card user from the conventional flow. Purchases in a foreign country therefore can be made in the same manner as purchases in the home country with the credit card.

Here, using the example of <FIG>, a processing flow up to the completion of the payment for purchased merchandise will be explained in a situation of a credit card user selecting a credit card settlement for the merchandise purchased at a merchant. As shown in <FIG>, the server <NUM> reports the exchange rate of the day daily to the merchant device <NUM> of the credit-card affiliated merchant (see (<NUM>) in <FIG>). Upon receipt of an exchange rate from the server <NUM>, the merchant device <NUM> stores this exchange rate.

Furthermore, upon receipt of a request to display the price from the terminal <NUM>, the merchant device <NUM> performs control in a manner such that the price of the merchandise (amount of payment) will be displayed on the terminal <NUM> in the currency (e.g. US dollars) designated by the user based on the exchange rate reported by the server <NUM> (see (<NUM>) in <FIG>).

For instance, upon receipt of an image of an article that the user wishes to purchase from the terminal <NUM>, the merchant device <NUM> performs control in such a manner as to identify the price of the article contained in this image, calculate the amount of payment in the currency designated by the user from the price of the article and the exchange rate, and display on the terminal <NUM> the amount of payment for the article in the currency designated by the user (e.g., in US dollars).

<FIG> is a diagram showing an example of a price displayed in the home currency on a terminal. In the example of <FIG>, the terminal <NUM> takes with a camera an image of articles laid out at a merchant shop such as a convenience store, and sends the image to the merchant device <NUM>. The merchant device <NUM> displays prices in both Japanese yen and US dollars on the image of the article on the terminal <NUM>. The displayed prices are the amount of actual payment that the credit card user is going to make, including fees for the credit card transaction, and therefore may differ from the prices displayed at the merchant. Moreover, the fees may vary among the merchants.

If the credit card user selects a settlement for the purchased merchandise on a credit card in the home currency (US dollars) of the credit card user (see (<NUM>) in <FIG>), the merchant device <NUM> notifies the server <NUM> of the sales information regarding the purchase of the merchandise in the home currency (US dollars) (see (<NUM>) in <FIG>). The merchant device <NUM> further requests authorization from the payment gateway <NUM> for the credit card settlement (see (<NUM>) in <FIG>).

The payment gateway <NUM> notifies the credit card company <NUM> of this authorization request (see (<NUM>) in <FIG>). Thereafter, the credit card company <NUM> notifies the payment gateway <NUM> of the authorization result (see (<NUM>) in <FIG>). The payment gateway <NUM> notifies the merchant device <NUM> of this authorization result (see (<NUM>) in <FIG>). If the authorization result raises no problems, the credit-card affiliated merchant hands over the article to the credit card user (see (<NUM>) in <FIG>).

The credit card company <NUM> notifies the payment gateway <NUM> of the result of the sales information relating to the credit card settlement (see (<NUM>) in <FIG>). The payment gateway <NUM> notifies the merchant device <NUM> of the result of the sales information (see (<NUM>) in <FIG>).

Thereafter, the credit card user makes a payment to the credit card company in the home currency (US dollars) of the credit card user in the same manner as in the conventional system (see (<NUM>) in <FIG>). The credit card company <NUM> remits the amount in US dollars to the payment gateway <NUM> (see (<NUM>) in <FIG>). Then, the payment gateway <NUM> remits the amount in US dollars to the server <NUM> (see (<NUM>) in <FIG>). The processing in (<NUM>) to (<NUM>) of <FIG> is the same as that of the conventional credit card settlement.

When the server <NUM> confirms the receipt of the amount in US dollars, the currency is converted (see (<NUM>) in <FIG>) so that the amount in Japanese yen can be remitted to the credit-card affiliated merchant. Here, fees for currency conversion may be imposed. In the case of the credit card user wishing to return the purchased article, the merchant device <NUM> returns the amount at the same exchange rate as the rate at the time of purchasing.

As mentioned above, the processing in (<NUM>) to (<NUM>) of <FIG> is the same as when the credit card user makes a payment to the credit card company <NUM> on a credit card in the home country. That is, the processing flow for the credit card user and the credit card company <NUM> is the same when a purchase is made on a credit card in the settlement system <NUM> according to the present embodiment and when a purchase is made in the home country as usual.

The settlement system <NUM> offers services with which, when charging merchandise to a credit card at a merchant in a foreign country, the user can ascertain the amount of payment in his/her home currency at the time of making payment. In addition, with the settlement system <NUM>, the amount of settlement can be fixed to the amount at the time of purchasing. Thus, the credit card user can safely make purchases without being concerned about a risk of exchange rate fluctuations.

Next, the configuration of the server <NUM> will be described with reference to <FIG> is a block diagram showing an exemplary configuration of the server according to the first embodiment. As illustrated in <FIG>, the server <NUM> includes a communication processing unit <NUM>, a controller <NUM>, and a storage unit <NUM>. The processing of the components of the server <NUM> will be described below. The functions of the server <NUM> may be divided and assigned to multiple apparatuses.

The communication processing unit <NUM> controls communications relating to various types of information. The communication processing unit <NUM> may control the communications between the merchant device <NUM> of the credit-card affiliated merchant and the payment gateway <NUM>.

The storage unit <NUM> stores data and programs necessary for various processing performed by the controller <NUM>. In particular, the storage unit <NUM> includes a sales information storage unit 13a, as a component relevant to the present embodiment. The storage unit <NUM> may be a semiconductor memory element such as a random access memory (RAM) and a flash memory, or a storage device such as a hard disk and an optical disk.

The sales information storage unit 13a stores information relating to the sales of the credit-card affiliated merchant. As shown in <FIG>, for example, the sales information storage unit 13a stores, as information relating to sales when a credit card settlement is selected, the "purchaser name" indicating the name of the purchaser who has purchased an article, "article name" indicting the name of the article purchased, the "sales amount" effected by the purchase of the article, a "purchase time/date" indicating the time and date of the purchase, and an "exchange rate at purchase" indicating the exchange rate applicable at the time of the purchase, in association with each other. In the example of <FIG>, the sales information storage unit 13a stores the rate of yen to US dollars as an exchange rate at the time of purchase.

The controller <NUM> includes an internal memory for storing required data and programs defining various processing procedures, thereby implementing various processing. In particular, the controller <NUM> includes a rate notification unit 12a and a payment controller 12b as components closely related to the present embodiment. Here, the controller <NUM> is an electronic circuit such as a central processing unit (CPU) and a micro processing unit (MPU), or an integrated circuit such as an application specific integrated circuit (ASIC) and a field programmable gate array (FPGA).

The rate notification unit 12a reports exchange rates to the merchant device <NUM> of the credit card affiliated merchant at a predetermined occasion. The rate notification unit 12a may report, for example, the exchange rate of the day daily to the merchant device <NUM>. Alternatively, the rate notification unit 12a may report the exchange rate applicable to individual credit card users for a certain period of time, to the merchant device <NUM>. For instance, the rate notification unit 12a may report, as an exchange rate applicable a credit card user who is traveling abroad for a certain period of time, a fixed exchange rate applicable during his/her traveling period to the merchant device <NUM>.

The payment controller 12b performs control to determine the amount of payment to the merchant device <NUM> based on the sales information reported by the merchant device <NUM> and the exchange rate of the purchase time and pay the determined amount to the merchant device <NUM> in the currency of the second country, which is the home currency for the merchant device <NUM>.

If the credit card user makes a payment to the credit card company <NUM> in the currency of the first country, and the amount in the first currency is remitted from the credit card company <NUM> to the payment gateway <NUM>, the payment controller 12b reads the sales information stored in the sales information storage unit 13a, calculates the amount of payment in the second currency from the sales amount in the read-out sales information and the exchange rate at the time of the credit card user purchasing the article, and pays to the merchant device <NUM> the remaining amount in the currency of the second country after subtracting a predetermined fee from the amount of payment.

Next, by referring to <FIG>, the configuration of the merchant device <NUM> will be described. <FIG> is a block diagram showing an exemplary configuration of a merchant device according to the first embodiment. The merchant device <NUM> includes a communication processing unit <NUM>, a controller <NUM>, and a storage unit <NUM>, as illustrated in <FIG>. The processing of the components of the merchant device <NUM> will be described below. The functions of the merchant device <NUM> may be divided and assigned to multiple apparatuses.

The communication processing unit <NUM> controls communications relating to various types of information. The communication processing unit <NUM> may control the communications between the server <NUM> and the terminal <NUM>.

The storage unit <NUM> stores data and programs necessary for various types of processing performed by the controller <NUM>. In particular, the storage unit <NUM> includes a merchandise list storage unit 23a, an exchange rate storage unit 23b, and a sales information storage unit 23c as components closely related to the present embodiment. The storage unit <NUM> may be a semiconductor memory element such as a RAM and a flash memory, or a storage device such as a hard disk and an optical disk.

The merchandise list storage unit 23a stores a list of merchandise articles available in the credit-card affiliated merchant. As shown in <FIG>, the merchandise list storage unit 23a may store, for each credit-card affiliated merchant, the articles for sale in association with the "article names" indicating the names of the articles and "article prices" indicating the retail prices of the articles.

The exchange rate storage unit 23b stores the exchange rate information reported by the server <NUM>. If the server <NUM> reports the exchange rate daily, the exchange rate storage unit 23b stores the date and the exchange rate in association with each other. If the applied exchange rates differ from user to user of the credit card, the exchange rate storage unit 23b stores the credit card users and exchange rates in association with each other.

The sales information storage unit 23c stores information relating to the sales of the credit-card affiliated merchant. For instance, the sales information storage unit 23c stores, as information relating to sales when a credit card settlement is selected, the "purchaser name", "article name", "sales amount", "purchase time/date", and "exchange rate at purchase" in the same manner as in the aforementioned <FIG>.

The controller <NUM> includes an internal memory for storing required data and programs defining various processing procedures, thereby implementing various types of processing. In particular, the controller <NUM> includes an exchange rate storage unit 22a, a display controller 22b, and a sales notification unit 22c as components closely related to the present embodiments. Here, the controller <NUM> is an electronic circuit such as a central processing unit (CPU) and a micro processing unit (MPU), or an integrated circuit such as an application specific integrated circuit (ASIC) and a field programmable gate array (FPGA).

Upon receipt of an exchange rate from the server <NUM>, the exchange rate storage unit 22a stores the received exchange rate in the exchange rate storage unit 23b. For instance, the exchange rate storage unit 22a receives the exchange rate daily from the server <NUM>, and stores the date and the exchange rate in association with each other in the exchange rate storage unit 23b.

Based on the exchange rate reported by the server <NUM>, the display controller 22b performs control in a manner such that the amount of payment for the purchased article is displayed on the terminal <NUM> of the user in the currency of the first country designated by the user. For instance, upon receipt of an image of an article that the user wishes to purchase from the terminal <NUM>, the display controller 22b performs control in such a manner as to identify the price of the article contained in this image, calculate the amount of payment in the currency designated by the user from the price of the article and the exchange rate, and display the amount of payment in the currency designated by the user on the image. Here, the display controller 22b calculates the amount of payment by adding on the fees for the server <NUM> and fees that vary in accordance with the credit card companies and merchants to display the amount. The amount of payment displayed by the display controller 22b is the exact amount that the user will actually pay.

Furthermore, if the user meets certain conditions, the display controller 22b may offer a preferential exchange rate to the user so that the amount of payment can be discounted. For instance, if the user has an electronic coupon issued by the merchant, the display controller 22b may change the exchange rate in accordance with the description of the coupon and calculate a discounted amount of payment.

Moreover, the display controller 22b may offer a discount on the amount of payment in accordance with the user's purchase history. In particular, the display controller 22b may refer to the sales information storage unit 23c and, if the purchase history includes a purchase of a specific high-value article or a purchase of a predetermined amount or more, offer a discount and calculate the amount of payment for the purchase made during a predetermined period of time.

Furthermore, the display controller 22b may offer a discount on the amount of payment based on a status of membership that varies in accordance with the number of times of use, the total purchase amount, and the like. The status of membership may be raised in stages, for example, when the number of times of use of the payment system <NUM> exceeds a predetermined threshold value or when the total purchase amount exceeds a predetermined amount. The display controller 22b may calculate a discounted amount of payment by changing the exchange rate in accordance with the status of membership.

The display controller 22b may further offer a discount on the amount of payment in accordance with an alliance stamp rally. A stamp rally may be held commonly among multiple merchants. The display controller 22b may change the exchange rate in accordance with the stamps collected at the stamp rally and calculate a discounted amount of payment.

More specifically, upon receipt of an image of an article the user wishes to purchase from the terminal <NUM>, the display controller 22b analyzes the image to identify the name of the article contained in the image. The display controller 22b may be the one that performs the processing of the image analysis, or may request an external device to perform the processing. The display controller 22b identifies the price of the article corresponding to the article name from the merchandise list storage unit 23a. Thereafter, the display controller 22b performs control to read an applicable one of the exchange rates, calculate the amount of payment in the currency of the first country from the price of the article, the exchange rate, and the fees, and display the calculated amount of payment on the image.

The display controller 22b may perform control to acquire positional information from the terminal <NUM>, identify from this positional information the merchant at which the terminal <NUM> is located, calculate the amount of payment in the currency of the first country for the purchase of the article in accordance with the price of the article and fees of the identified merchant, and display the calculated amount of payment on the terminal <NUM>.

The display controller 22b may acquire positional information from the terminal <NUM>, identify the merchant at which the terminal <NUM> is located based on the positional information, read the merchandise list corresponding to the identified merchant from the merchandise list storage unit 23a, and identify the price of the article corresponding to the article name from the merchandise list of the identified merchant. The display controller 22b also identifies the fees of the identified merchant if the fees vary depending on the merchants. Thereafter, the display controller 22b performs control to read the applicable one of the exchange rates, calculate the amount of payment in the currency of the first country from the price of the article, the exchange rate, and the fees, and display the calculated amount of payment on the image of the article.

If the credit card user purchases the article on a credit card, the sales notification unit 22c notifies the server <NUM> of the sales information in the currency of the first country that has been calculated based on the exchange rate reported by the server <NUM>. If the user, who is a foreign traveler, selects a credit card settlement in the home currency, the sales notification unit 22c stores in the sales information storage unit 23c the sales information in the currency of the first country that has been calculated based on the exchange rate reported by the server <NUM>, and notifies the server <NUM> of the sales information.

The server <NUM> of the settlement system <NUM> according to the first embodiment reports an exchange rate to a merchant device <NUM> in the credit-card affiliated merchant at certain occasions. The merchant device <NUM> performs control in a manner such that, based on the exchange rate reported by the server <NUM>, the amount of payment for the purchase of an article will be displayed on the terminal <NUM> in the currency of the first country designated by the user. Furthermore, if the user purchases the article on a credit card, the merchant device <NUM> notifies the server <NUM> of the sales information in the currency of the first country that has been calculated based on the exchange rate reported by the server <NUM>. The server <NUM> determines the amount of payment to the merchant device <NUM> based on the sales information reported by the merchant device <NUM> and the exchange rate at the time of the purchase, and pays the determined amount to the merchant device <NUM> in the currency of the second country, which is the home currency for the merchant device <NUM>. According to the present embodiments, the user can purchase an article in his/her home currency while checking the price in the home currency.

Furthermore, upon receipt of an image of an article that the user wishes to purchase from the terminal <NUM>, the merchant device <NUM> identifies the price of the article contained in the image, calculates the amount of payment for the purchase of the article in the currency of the first country from the price of the article and the exchange rate, and displays the calculated amount of payment on the image of the article. Thus, when the user starts up a predetermined application on the terminal <NUM> and takes with the camera of the terminal <NUM> an image of an article that the user wishes to purchase, the amount of payment in the home currency is displayed on the terminal <NUM>. Thus, the user can easily check the price in the home currency.

The server <NUM> reports the exchange rate applicable to individual users for a predetermined period of time to the merchant device <NUM>. In this manner, the settlement system <NUM> can fix the exchange rate applicable for a predetermined period of time, for example, to a credit card user who travels abroad for this period so that the exchange rate can be fixed for a specific credit card user during the traveling period.

Furthermore, the merchant device <NUM> performs control to acquire positional information from the terminal <NUM>, identify from this positional information the merchant at which the terminal <NUM> is located, calculate the amount of payment in the currency of the first country for the purchase of the article in accordance with the price of the article and fees of the identified merchant, and display the calculated amount of payment on the image. Thus, in the settlement system <NUM>, even when the price of an article and fees differ from merchant to retailer, the price at a targeted merchant can be displayed in the user's home currency on the terminal <NUM>.

The components of each apparatus illustrated in the drawings are only to represent conceptual functions, and may not be always physically configured as illustrated in the drawings. That is, specific forms of the distribution and integration of the apparatuses are not limited to those illustrated in the drawings. All or part of the apparatuses may be configured to be functionally or physically distributed or integrated in units as desired in accordance with various loads, usage conditions, and the like. Furthermore, all or part of the processing functions performed in the apparatuses may be realized by the CPU and a program analyzed and implemented by the CPU, or may be realized as hardware by wired logic.

Among the processes described in the present embodiment, all or part of the processes described as being automatically performed may be manually performed, or all or part of the processes described as being manually performed may be automatically performed with a commonly known method. In addition, the processing procedures, the control procedures, the specific names, and the information including various types of data and various parameters shown in the specification and the drawings can be freely changed, unless otherwise specified.

It is also possible to create a program by describing the processing executed by the apparatuses in the above embodiment in a computer-executable language. For example, a program may be created by describing the processing executed by the server <NUM> according to the embodiment in a computer-executable language. If this is the case, the same effects as those of the above-described embodiment can be achieved by the computer executing the program. Such a program may be stored in a computer-readable storage medium so that the same processing as that of the above-described embodiment can be realized by a computer reading and executing the program stored in the storage medium.

<FIG> is a diagram showing a computer configured to implement programs. As illustrated in <FIG>, the computer <NUM> may include a memory <NUM>, a CPU <NUM>, a hard disk drive interface <NUM>, a disk drive interface <NUM>, a serial port interface <NUM>, a video adaptor <NUM>, and a network interface <NUM>. These components are coupled to one another by way of a bus <NUM>.

As illustrated in <FIG>, the memory <NUM> includes a read only memory (ROM) <NUM> and a RAM <NUM>. The ROM <NUM> stores a boot program such as the basic input output system (BIOS). The hard disk drive interface <NUM> is coupled to a hard disk drive <NUM> as illustrated in <FIG>. The disk drive interface <NUM> is coupled to the disk drive <NUM>, as illustrated in <FIG>. For instance, a removable storage medium such as a magnetic disk or an optical disk is inserted into the disk drive <NUM>. The serial port interface <NUM> may be coupled to a mouse <NUM> and a keyboard <NUM>, as illustrated in <FIG>. The video adaptor <NUM> may be coupled to a display <NUM>, as illustrated in <FIG>.

Here, the hard disk drive <NUM> may store an OS <NUM>, an application program <NUM>, a program module <NUM>, and program data <NUM>, as illustrated in <FIG>. That is, the above program may be stored in the hard disk drive <NUM> as a program module in which instructions to be executed by the computer <NUM> are described.

The various data described in the above embodiment may be stored as program data in the memory <NUM> or the hard disk drive <NUM>. Then, the CPU <NUM> reads the program module <NUM> and the program data <NUM> stored in the memory <NUM> and the hard disk drive <NUM>, as necessary, onto the RAM <NUM>, and thereby executes various processing procedures.

The program module <NUM> and the program data <NUM> relating to the program are not limited to those stored in the hard disk drive <NUM>, and may be stored in a removable storage medium and read out by the CPU <NUM> by way of a disk drive or the like. Alternatively, the program module <NUM> and the program data <NUM> relating to the program may be stored in a different computer connected via a network (e.g., Local Area Network (LAN) and Wide Area Network (WAN)) and read out by the CPU <NUM> by way of the network interface <NUM>.

Claim 1:
A settlement system (<NUM>) comprising:
a server (<NUM>) comprising:
a rate notification unit (12a) configured to report, at a predetermined occasion, an exchange rate between a currency of a first country and a second country,
wherein
the settlement system also comprises a merchant device (<NUM>),
the exchange rate is applicable for a predetermined period of time to the merchant device (<NUM>),
the server comprises a payment controller (12b) configured to perform control to determine an amount of payment to be made to the merchant device (<NUM>), based on sales information reported by the merchant device (<NUM>) and an exchange rate at a time of purchase, and pay the determined amount to the merchant device (<NUM>) in a currency of a second country, the currency of the second country being a home currency for the merchant device (<NUM>),
the merchant device (<NUM>) comprises:
a display controller (22b) configured to, if a request from a mobile terminal apparatus (<NUM>) of a user is received, perform control, based on a fixed exchange rate reported by the server (<NUM>), to display on the mobile terminal apparatus (<NUM>) of the user an amount of payment for purchase of an article in a currency of a first country designated by the user; and
a sales notification unit (22c) configured to, if the user purchases the article, notify the server (<NUM>) of the sales information in the currency of the first country, the sales information being calculated by the display controller based on the exchange rate reported by the server (<NUM>),
the display controller (22b) performs control in such a manner as to identify, based on receipt of an image of an article that the user wishes to purchase from the mobile terminal apparatus (<NUM>), a price of the article contained in the image, calculate the amount of payment for purchase of the article in the currency of the first country based on the price of the article and the exchange rate, and display the calculated amount of payment on the image.