KR101009219B1 - Exterior connector gender of mobile communication apparatus, and system for saving money in ic card and money transaction system using the connector gender - Google Patents

Abstract

The present invention relates to an external conversion gender of a mobile communication terminal, a prepaid IC card charging system and a financial transaction system using the same. In the prepaid IC card charging system for charging a prepaid IC card with a charge through communication between a charging server performing charge authentication processing of a prepaid IC (Integrated Circuit) card according to the present invention and a mobile communication terminal, A prepaid IC card which is provided and communicates with an external device through the provided metal contact and stores a predetermined charge; An external conversion that includes a card socket to which the prepaid IC card is detachably mounted and a terminal connection part detachably connected to the mobile communication terminal, and performs signal conversion so that communication is performed between the prepaid IC card and the mobile communication terminal. With gender; When the power is supplied to the external conversion gender and a card charging instruction is detected by the user, the external conversion gender requests the prepaid IC card to receive the card identification information, and the charging server uses the received card identification information. Requesting the charging authentication process of the prepaid IC card and receiving a charge authentication processing completion message from the charging server, transmitting a charge storage command signal to the prepaid IC card through the external conversion gender; It is characterized by including.

Description

EXTERIOR CONNECTOR GENDER OF MOBILE COMMUNICATION APPARATUS, AND SYSTEM FOR SAVING MONEY IN IC CARD AND MONEY TRANSACTION SYSTEM USING THE CONNECTOR GENDER}

The present invention relates to an external conversion gender of a mobile phone, a prepaid IC card charging system and a financial transaction system using the same, and more particularly, an external conversion of a mobile phone that processes signal conversion so that communication between a prepaid IC card and a mobile phone is performed. A gender and a prepaid IC card charging system for charging a prepaid IC card using the same, and a financial transaction system for performing a predetermined financial processing.

With the promotion of online commerce and the development of electronic financial transaction technology, various payment methods are provided.

For example, a user who purchases a product or service may pay the cost in cash, but may also pay by wire transfer or by using a credit card, especially for transactions online.

Among the various payment methods, a number of prepaid IC cards are recently used.

The prepaid IC card is pre-stored with a predetermined charge. The payment device, which is in contact or contactless communication with the prepaid IC card, is a method of deducting an amount corresponding to the cost of goods or services from the charge of the prepaid IC card. Make a payment.

In this way, the prepaid IC card allows the payment to be made using a pre-stored charge, so that the payment can not be made through the network in real time, so that the payment process can be made quickly, and the network has a failure. In this case, communication between the prepaid IC card and the payment device can be maintained, and thus it is widely used because there is no problem in processing the payment.

However, such a prepaid IC card is inconvenient to find a designated place where a rechargeable card reader is installed in order to charge the charge.

On the other hand, in online commerce using the Internet (for example, when shopping at a shopping mall), users who have a general IC card (for example, a credit card) having a size according to the ISO 7810 specification may use their credit card information. That is, the payment was made only by directly inputting information such as credit card number, expiration date and other related information to the online shopping mall server.

Of course, when the financial chip embedded in the mobile terminal is used, the mobile terminal can read and transmit the information contained in the financial chip, so that a predetermined financial transaction can be made. It is inconvenient to manually enter IC card information for direct financial transactions (such as shopping mall payment).

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned disadvantages, and an object thereof is to provide a prepaid IC card charging system for reducing the time and space constraints in charging a prepaid IC card, and an IC card. A financial transaction system for automatically extracting and transmitting financial transaction information in a used financial transaction, and an external conversion gender of the prepaid IC card charging system and a mobile communication terminal used in the financial transaction system.

In order to achieve the above object, a prepaid IC card for charging a prepaid IC card through a communication between a charging server performing a charging authentication process of a prepaid IC (Integrated Circuit) card and a mobile communication terminal according to the present invention. The charging system includes a prepaid IC card having a metal contact, communicating with an external device through the provided metal contact, and storing a predetermined charge; An external conversion that includes a card socket to which the prepaid IC card is detachably mounted and a terminal connection part detachably connected to the mobile communication terminal, and performs signal conversion so that communication is performed between the prepaid IC card and the mobile communication terminal. With gender; When the power is supplied to the external conversion gender and a card charging instruction is detected by the user, the external conversion gender requests the prepaid IC card to receive the card identification information, and the charging server uses the received card identification information. Requesting the charging authentication process of the prepaid IC card and receiving a charge authentication processing completion message from the charging server, transmitting a charge storage command signal to the prepaid IC card through the external conversion gender; It is configured to include.

In addition, in order to achieve the above object, a financial transaction system including a financial transaction processing server for processing a financial transaction using predetermined information of an IC (Integrated Circuit) card transmitted from a mobile communication terminal according to the present invention includes a metal contact point. An IC card provided with and communicating with an external device through the provided metal contact, the IC card including necessary information for a financial transaction; An external conversion gender including a card socket to which the IC card is detachably mounted and a terminal connection part detachably connected to the mobile communication terminal, and performing signal conversion to perform communication between the IC card and the mobile communication terminal; When power is supplied to the external conversion gender and a user's financial transaction command is detected, the IC card is transmitted to the IC card through the external conversion gender to receive necessary information for financial transactions, and the received financial transaction necessary information is transmitted to the financial transaction. And a mobile communication terminal which transmits to the processing server and requests financial transaction processing.

In addition, in order to achieve the above object, an external conversion gender of a mobile communication terminal according to the present invention includes a card socket to which a prepaid integrated circuit (IC) card is detachably mounted; A terminal connection unit detachably connected to the mobile communication terminal; The power supplied from the mobile communication terminal through the terminal connection unit is supplied to a prepaid IC card mounted in the card socket, and is received through the control signal and the card socket of the mobile communication terminal received through the terminal connection unit. And a control unit for converting the response signals of the prepaid IC card into the communication formats of the prepaid IC card and the mobile communication terminal, respectively, and controlling the converted signals to be transmitted through the card socket and the terminal connection unit, respectively. .

As described above, according to the present invention, even if there is no separate card reader device, the prepaid IC card can be charged with only the mobile communication terminal and the external conversion gender. Since it is easy, it is excellent in user convenience in charging a plurality of prepaid IC cards.

In addition, by using predetermined information stored in the IC card when performing a financial transaction online, it is possible to reduce the inconvenience of the user having to directly enter the corresponding information for financial transactions.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In the prepaid IC card charging system using the external conversion gender of the mobile communication terminal according to an embodiment of the present invention, the charging server 400, the prepaid IC card 100, and the mobile communication terminal 300 are illustrated in FIG. 1. , An external conversion gender 200 is included.

The charging server 400 performs charging authentication processing of the prepaid IC card 100. For example, the charging server 400 is connected to a charging terminal provided at a transportation card charging station through a network to perform charging authentication processing of a prepaid transportation card. It performs the function of charging server. However, the charging server 400 according to the present embodiment has a difference in that charging authentication of the prepaid type transportation card is performed by receiving predetermined information from the mobile communication terminal 300 instead of the conventional charging terminal.

The prepaid IC card 100 is an IC card in which a predetermined charge is stored in advance, wherein an IC card is an IC (Integrated Chip) embedded therein to transmit predetermined information through communication with the outside through a predetermined metal contact. Or a card that performs a function of updating internal information.

In this embodiment, the prepaid IC card 100 is provided with a metal contact conforming to the International Organization for Standardization (ISO) 7816-2 specification, and the prepaid IC card 100 communicates with an external device through the metal contact. do.

Conforming to the ISO 7816-2 specification means that the metal provided on the card having a size according to the ISO 7810 specification (for example, ISO7810 ID-1, that is, about 86 mm wide and about 54 mm long) as shown in FIG. 2. This means that the position and size of the contacts follow the ISO 7816-2 specification.

ISO 7810 and ISO 7816 are already standardized open specifications and will not be described in more detail.

The external conversion gender 200 includes a card socket in which the prepaid IC card 100 is detachably mounted and a terminal connection part detachably connected to the mobile communication terminal 300, and the prepaid IC card 100 and the mobile communication terminal. Signal conversion is performed such that communication is performed between the 300.

An example of a functional block of the external conversion gender 200 is shown in FIG. 3A.

As shown in the figure, the external conversion gender 200 uses a USB module 210 for communicating with the mobile communication terminal 300 by a universal serial bus (USB) method and a power supplied from the mobile communication terminal 300. Signals to the prepaid IC card 100 through the power supply module 230 to transfer to each unit, an 8-pin card socket 260 on which the prepaid IC card 100 is mounted, and an 8-pin card socket 260. It comprises a card control module 210 to perform the transmission and reception. In addition, a switch 240 for supplying or cutting off the power supplied from the mobile communication terminal 300 to the prepaid IC card 100 may be further included.

The USB module 210 and the power module 230 of the figure constitute a terminal connection portion connected to the mobile communication terminal 300, and also the USB module 210, the power module 230, the card control module 210 It acts as a kind of control unit and performs signal conversion so that communication is performed between the mobile communication terminal 300 and the prepaid IC card 100.

For example, the USB module 210 receiving the USB communication signal received from the mobile terminal 300 transmits the USB signal to the card control module 210, and the card control module 210 transmits the USB signal to the prepaid IC card. Converts the signal into a signal for controlling the 100 and transmits it to the prepaid IC card 100, and vice versa, a signal according to the ISO 7816-3 and ISO 7816-4 specifications received from the prepaid IC card 100; The card control module 210 transmits a corresponding signal to the USB module 210, and the USB module 210 converts the signal into a USB communication signal and transmits the signal to the mobile communication terminal 300.

4A to 4C illustrate an example of an external form of an external conversion gender 200 that performs such a function, and a coupling state of the prepaid IC card 100 and the mobile communication terminal 300.

4A illustrates a state in which the prepaid IC card 100 is mounted in the external conversion gender 200, and FIG. 4B illustrates a state in which the prepaid IC card 100 is mounted in the external conversion gender 200. The external conversion gender 200 is coupled to the mobile communication terminal 300 while the prepaid IC card 100 is mounted.

At this time, the external conversion gender 200 may be provided with a mounting guide 262 in the card socket 260 indicating the insertion mounting position of the prepaid IC card 100, and also provided with a protective cover 271. When not in use, the terminal connector 281 is protected, and in use, the protective cover 271 is rotated to expose the terminal connector 281 and then connected to the mobile communication terminal 300 (see FIGS. 4B and 4C). In addition, the external conversion gender 200 may further include a light emitting diode (LED) 291 and 292 indicating an operation state.

An example of the internal structure of the external conversion gender 200 is shown in FIGS. 5A and 5B.

FIG. 5A illustrates a top surface of a transverse cross section A-A 'of the external conversion gender 200 of FIG. 4A, and FIG. 5B illustrates a vertical cross section B-B' of the external conversion gender 200 of FIG. 4B. The figure shown.

That is, the card socket 260 of the external conversion gender 200 has a socket pin 263 that contacts each of the metal contacts provided in the prepaid IC card 100 in accordance with the International Organization for Standardization (ISO) 7816-2 specification. A rubber pad may be further provided as a card fixing unit 264 which is provided and which fixes the movement of the prepaid IC card 100 mounted thereon.

That is, the rubber pad is provided as an elastic member to apply elastic pressure to the prepaid IC card 100 mounted on the card socket 260, and thus the prepaid IC card 100 may move easily after being mounted on the card socket 260. Perform the function to prevent it from falling out.

In this embodiment, the rubber pad is provided as the card fixing unit 264 as an example, but it can be replaced by a locking device that fixes the movement of the prepaid IC card 100 to be mounted.

On the other hand, the mobile communication terminal 300 includes a portable wireless communication terminal such as a mobile phone, PDA (Personal Digital Assistants), and not only functions such as voice calls and web browsing with the other party, but also includes an external conversion gender driving application. When the external conversion gender 200 is connected, the external conversion gender 200 may communicate with the external conversion gender 200.

That is, the mobile communication terminal 300 supplies power to the external conversion gender 200 through the connection with the external conversion gender 200, and when the connection state of the external conversion gender 200 is detected, the conversion gender driving application is executed. Run it.

The mobile communication terminal 300 communicates with the external conversion gender 200 using the conversion gender driving application executed as described above. In this case, the external conversion gender 200 is received from the mobile communication terminal 300 as described above. The signal is converted into a signal of the prepaid IC card 100 format so that the communication is substantially performed between the mobile communication terminal 300 and the external conversion gender 200.

An example of a functional block of the mobile communication terminal 300 is illustrated in FIG. 3B.

As shown in the figure, the mobile communication terminal 300 includes a mobile communication module 310, a storage unit 320, a key input unit 340, a gender interface unit 360, a display unit 350, and a control unit 330. It is configured to include.

The mobile communication module 310 forms a communication channel with the base station 500 so that communication through the mobile communication network 502 is performed, and the key input unit 340 is provided with a keypad (not shown) to command a user. The display unit 350 outputs a screen according to a predetermined function of the mobile communication terminal 300.

The gender interface unit 360 is an interface unit for communicating with the external conversion gender 200, and preferably corresponds to a 24-pin charging interface provided for battery charging of the mobile communication terminal 300. That is, if the existing 24-pin interface provided in the mobile communication terminal 300 is used for the gender interface unit 360 of the present embodiment, additional cost may be reduced.

The mobile communication terminal 300 may use only 4 pins of the 24 pins when communicating with the external conversion gender 200 via the USB method.

That is, pins 10 and 15 of the 24 pins of the charging interface may be used as pins for USB communication, and pins 21 and 22 may be used for supplying power to the external conversion gender 200.

The storage unit 320 includes various applications and setting information for the operation of the mobile communication terminal 300. In particular, the storage unit 320 further includes a dedicated application for performing communication with the external conversion gender 200.

The control unit 330 controls the overall operation of each unit of the mobile communication terminal 300. In particular, when the connection of the external conversion gender 200 is detected through the gender interface unit 360, the conversion gender driving stored in the storage unit 320 is driven. The application is executed to perform an operation process according to the user's card charging command.

That is, when the user detects a card charging command, the controller 330 requests the prepaid IC card 100 through the external conversion gender 200 to receive the card identification information, and charges the card using the received card identification information. The server 400 requests the charging authentication processing of the prepaid IC card 100, and when the charging authentication processing completion message is received from the charging server 400, the prepaid IC card 100 is transmitted to the prepaid IC card 100 through the external conversion gender 200. It performs the function of transmitting the charge storage command signal.

Hereinafter, a charging process of the prepaid IC card 100 using the external conversion gender 200 of the mobile communication terminal 300 according to an embodiment of the present invention will be described with reference to FIG. 6.

In the present embodiment, it is assumed that the prepaid IC card 100 is mounted with the external conversion gender 200 and the external conversion gender 200 is connected to the mobile communication terminal 300.

When power is supplied from the mobile communication terminal 300 to the external conversion gender 200 (step S1), the external conversion gender 200 performs an initialization operation for communication (step S3). Here, the initialization operation may include, for example, a process of supplying power to each part of the external conversion gender 200 or a process of processing a time delay so that a crystal for generating a clock included in the external conversion gender 200 is stabilized. This may be included.

The external conversion gender 200 also supplies power to the prepaid IC card 100 (step S5), and the timing at which power is supplied to the prepaid IC card 100 may be changed. That is, power may be supplied at the time when communication between the actual mobile communication terminal 300 and the prepaid IC card 100 is performed.

The external conversion gender 200 transmits a connection signal to the mobile communication terminal 300 (step S7). In this case, the connection signal is a signal indicating that power is supplied to the external conversion gender 200 and is operating. Of course, it is possible to use the voltage level on the communication line that changes with the power supply as a connection signal without the need to generate the power supply.

The mobile communication terminal 300 recognizes the external conversion gender 200 according to the reception of the connection signal (step S9), and executes a dedicated application for controlling the external conversion gender 200, that is, the conversion gender driving application (step S11). ).

In this case, the conversion gender driving application directly communicates with the external conversion gender 200, so the name of the conversion gender driving application is referred to as a conversion gender driving application. It is for obtaining predetermined information from the prepaid IC card 100 or charging the prepaid IC card 100 with a charge. Hereinafter, this conversion gender driving application is involved in all functions related to charging a predetermined amount of the prepaid IC card 100.

The mobile communication terminal 300 establishes communication with the external conversion gender 200 (step S13), for example, when communicating with the external conversion gender 200 in a USB manner, the USB included in the external conversion gender 200 is provided. Establish communication with module 210.

Here, the establishment of communication means a state in which the devices are recognized and ready for communication through the corresponding devices.

When the user selects the charging mode (step S15), the mobile communication terminal 300 displays a menu for inputting the charged amount on the display 350 (step S17), and the user enters the prepaid IC card 100. When a charge is requested by inputting an amount to be charged (step S19), the mobile communication terminal 300 first transmits the card identification information and the charge balance request signal to the external conversion gender 200 (step S21).

The external conversion gender 200 converts the signal received from the mobile communication terminal 300 to the prepaid IC card 100 communication method by the USB method (step S23). In the following communication process between the mobile communication terminal 300 and the prepaid IC card 100, such a signal conversion process in the external conversion gender 200 is naturally included, so a description and illustration thereof will be omitted.

The external conversion gender 200 transmits the converted signal to the prepaid IC card 100 (step S25).

The prepaid IC card 100 extracts the requested card identification information and the charging balance from the mobile communication terminal 300 and transmits it to the mobile communication terminal 300 via the external conversion gender 200 (step S27).

Here, the authentication process between the mobile communication terminal 300 and the prepaid IC card 100 may be further included before the transmission and reception of information is performed. For example, a password input and a transmission process for obtaining predetermined information included in the prepaid IC card 100 may be included.

Upon receiving the card identification number and the charge balance information from the prepaid IC card 100, the mobile communication terminal 300 generates a charge request message and transmits it to the charge server 400 (step S29). The charge request message may include a charge amount requested by the user and a card identification number.

The charging server 400 transmits a charging request response message to the mobile communication terminal 300 after performing the charging authentication process according to the charging request message (step S31). At this time, the charging server 400 may perform the payment processing according to the request of the mobile communication terminal (300).

That is, the user may perform a prepayment process for the amount corresponding to the amount of money that the user wants to be charged in the prepaid IC card 100 so that the amount may be included in the mobile communication fee.

When the charging request response message is received from the charging server 400, the mobile communication terminal 300 sums the amount of money requested by the user and the remaining charge received from the prepaid IC card 100 (step S33). A charge update message including the amount of money is transmitted to the prepaid IC card 100 via the external conversion gender 200 (step S35).

The prepaid IC card 100 updates the charge (step S37) and transmits the charging result message to the mobile communication terminal 300 through the external conversion gender 200 (step S39), and the mobile communication terminal 300 The charging result message is displayed on the display unit 350 so that the user can check it (step S41).

Accordingly, the user of the mobile communication terminal 300 does not need to go to the charging station to charge his prepaid IC card 100, but only after mounting the prepaid IC card 100 in the external conversion gender 200. Since it is only necessary to perform a predetermined operation in connection with the mobile communication terminal 300, there is an advantage that less time and space constraints for charging the prepaid IC card 100.

Hereinafter, a financial transaction process using the external conversion gender 200 of the mobile communication terminal 300 according to another embodiment of the present invention will be described with reference to FIG. 7.

This embodiment is the same as the previous embodiment in that the external conversion gender 200 'is connected to the mobile communication terminal 300', but the IC card 100 'mounted on the external conversion gender 200' It is not necessary to be a prepaid IC card 100 in which a predetermined charge is stored, and predetermined information (for example, a card number and an expiration date) for a financial transaction (product payment or bank transaction) is stored in the IC card. There is a difference between the foregoing embodiment in that the mobile communication terminal 300 'communicates with the financial transaction processing server 400' instead of the charging server 400.

That is, the overall configuration of the system of the present embodiment is the same as in FIG. 1 except that the functions of the components are different as described above, and thus the overall configuration according to the present embodiment will be omitted. That is, the configuration of the present embodiment can be sufficiently inferred through the configuration of the previous embodiment (FIGS. 1 to 5B).

In the description of the present embodiment, detailed descriptions of the same functions as those of the previous embodiment may be omitted.

First, since steps S51 to 63 correspond to the processes from step S1 to step S13 in FIG. 6, description thereof is omitted.

After detecting the user's financial transaction mode selection (step S65), the mobile communication terminal 300 'displays a menu for the financial transaction mode on the display 350 (step S67).

In this case, the financial transaction mode includes all the financial transactions that enable a bank account transfer or a balance inquiry through communication with a bank, as well as a product purchased in an online shopping mall and payment settlement immediately.

When purchasing a product in an online shopping mall, a process of displaying a menu for a financial transaction mode may be omitted. That is, when a product is purchased at an online shopping mall through the wireless Internet, the state in which the wireless web browser is executed may correspond to a state in which the financial transaction mode menu is displayed by detecting the financial transaction mode selection.

Subsequently, when the user detects the payment request (step S69), the mobile communication terminal 300 requests the prepaid IC card 100 through the external conversion gender 200 for necessary information for payment (step S71), and the prepaid type The IC card 100 extracts the requested necessary information for payment and transmits it to the mobile communication terminal 300 through the external conversion gender 200 (step S73).

The mobile communication terminal 300 having received the necessary information for payment transmits a payment request message including the necessary information for payment to the financial transaction processing server 400 '(step S75).

The financial transaction processing server 400 ′ performs payment processing using the information included in the payment request message and transmits the message to the mobile communication terminal 300 as a result (step S77).

The mobile terminal 300 displays the payment processing result message so that the user can check it (step S79).

For example, when purchasing an item in a shopping mall, the mobile communication terminal 300 reads the card number and the card expiration date information from the IC card and transmits the information to the shopping mall server as the financial transaction processing server, thereby making payment processing based on the information. Can be lost.

This avoids the need to manually enter the information each time a user buys an item.

Of course, such an implementation requires that the mobile communication terminal 300 automatically input a card number to a specific input field (for example, a card number input field) included in a web page of a shopping mall displayed on the mobile communication terminal 300. In particular, it is desirable that a specific input field on the web page of each shopping mall be included on each web page in a consistent form.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. It is to be understood that such variations and modifications are intended to be included in the scope of the appended claims.

1 is a schematic configuration diagram of a prepaid IC card charging system using an external conversion gender of a mobile communication terminal according to an embodiment of the present invention;

2 is a diagram illustrating an example of a prepaid IC card conforming to the ISO 7816-2 specification of FIG. 1;

3A and 3B illustrate functional blocks of the external conversion gender and the mobile communication terminal of FIG. 1, respectively.

4A to 4C are diagrams illustrating an example of an external conversion gender, a prepaid IC card, an external appearance of a mobile communication terminal, and a coupling state thereof in FIG. 1;

5A and 5B are cross-sectional views of the external conversion gender of FIG. 1, respectively.

6 is a diagram illustrating a charging process of a prepaid IC card using an external conversion gender of a mobile communication terminal according to an embodiment of the present invention.

7 is a diagram illustrating a financial transaction process using an external conversion gender of a mobile communication terminal according to another embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

100: (prepaid) IC card 200: external conversion gender

300: mobile communication terminal 400: charging server

500: base station 502: mobile communication network

210: USB module 220: card control module

230: power module 240: switch

260: card socket 310: mobile communication module

320: storage unit 330: control unit

340: key input unit 350: display unit

360: gender interface 261: card socket opening

262: mounting guide 271: protective cover

281: terminal connection part 291,292: LED

263: socket pin 264: card fixing portion

Claims (6)

A prepaid IC card charging system for charging a prepaid IC card with a charge through communication between a charging server performing charge authentication processing of a prepaid IC (Integrated Circuit) card and a mobile communication terminal, A prepaid IC card having a metal contact and communicating with an external device through the provided metal contact and having a size according to ISO7810 ID-1 specification in which a predetermined charge is stored; A card socket having a mounting guide for inducing a detachable mounting position of the prepaid IC card, a card fixing portion for limiting movement of the mounted prepaid IC card, and a socket pin in contact with a metal contact of the prepaid IC card; An external conversion gender configured to include a terminal connection part detachably connected to the mobile communication terminal, and perform signal conversion to allow communication between the prepaid IC card and the mobile communication terminal; When the power is supplied to the external conversion gender and a card charging instruction is detected by the user, the external conversion gender requests the prepaid IC card to receive the card identification information, and the charging server uses the received card identification information. Requesting the charging authentication process of the prepaid IC card and receiving a charge authentication processing completion message from the charging server, transmitting a charge storage command signal to the prepaid IC card through the external conversion gender; Prepaid IC card charging system using an external conversion gender of the mobile communication terminal comprising a. The method of claim 1, The mobile communication terminal receives the charge balance information together with the card identification information from the prepaid IC card, requests the charging server for the charging authentication process of the prepaid IC card using the received card identification information, and the charging is performed. Upon receiving the charge authentication processing completion message from the server, the prepaid IC card receives a charge storage command signal including a charge amount obtained by adding a charge amount of a charge requested by the user to a charge balance of the prepaid IC card through the external conversion gender. Prepaid IC card charging system using an external conversion gender of the mobile communication terminal, characterized in that for transmitting to. delete A card holding portion and a metal of the prepaid IC card having a mounting guide on one side to guide the removable mounting position of the prepaid IC card having a size according to the ISO7810 ID-1 specification and limiting the movement of the mounted prepaid IC card. A card socket having socket pins in contact with the contacts; A terminal connection unit detachably connected to the mobile communication terminal; The power supplied from the mobile communication terminal through the terminal connection unit is supplied to a prepaid IC card mounted in the card socket, and is received through the control signal and the card socket of the mobile communication terminal received through the terminal connection unit. The response signal of the prepaid IC card is converted into the communication formats of the prepaid IC card and the mobile communication terminal, respectively, and the converted signals are controlled to be transmitted through the card socket and the terminal connection unit, respectively. Transmits the card identification information request signal received from the mobile communication terminal to the prepaid IC card, and transmits the card identification information received from the prepaid IC card to the mobile communication terminal, and is received from the mobile communication terminal. Sends a deposit save command signal to the prepaid IC card External conversion gender of the mobile communication terminal comprises a control unit for. The method of claim 4, wherein The terminal connection unit includes a connection pin that contacts each of four pins of the 24 pins provided in the battery charging interface of the mobile communication terminal, The control unit performs Universal Serial Bus (USB) communication with the mobile communication terminal through a connection pin of the terminal connection unit, and performs communication according to ISO 7816 with the prepaid IC card through the card socket. External conversion gender for mobile communication terminals. delete

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