KR100788603B1 - Communication apparatus and method between smart card equipped with software component and mobile communication terminal - Google Patents

Abstract

An apparatus and a method for communication between a smart card, in which a software component is installed, and a mobile terminal are provided to drive applications on a smart card by installing a software component in the smart card only and arranging a branch bridge for communication between a mobile terminal and the smart card. An apparatus for communication between a smart card(200) and a mobile terminal(100) comprises a branch bridge(130), a device management part(220), and device driving parts(230-1-230-n+1). The branch bridge(130), installed in the mobile terminal(100), stores IDs for I/O interface devices(110-1-110-n). The branch bridge(130) adds a device ID to a signal/data supplied from an I/O interface device and transmits it to the smart card(200). The branch bridge(130) confirms an I/O interface device, based on a device ID contained in a data format transmitted from the smart card(200), and transmits a signal/data to the confirmed I/O interface device. The device management part(220), installed in the smart card(200), confirms a device driving part, based on a device ID contained in a data format transmitted from the mobile terminal(100), and transmits a signal/data to the confirmed device driving part. The branch bridge(130) adds a device ID to a signal/data supplied from a device driving part and transmits it to the mobile terminal(100). The device driving parts(230), installed in the smart card(200) in one-to-one correspondence with the I/O interface devices(110-1-110-n), receive signals/data from corresponding I/O interface devices and transfer them to active applications. The device driving parts(230) receive signals/data from active applications and transfer them to the device management part(220).

Description

TECHNICAL APPARATUS AND METHOD BETWEEN SMART CARD EQUIPPED WITH SOFTWARE COMPONENT AND MOBILE COMMUNICATION TERMINAL}

1 is a view showing the internal structure of a conventional mobile communication terminal and a smart card.

2 is a view showing the internal structure of a mobile communication terminal and a smart card according to the present invention.

3 is a schematic view showing the configuration of a communication device between a smart card and a mobile communication terminal equipped with a software component according to an embodiment of the present invention.

4 is a process diagram illustrating a communication method between a smart card and a mobile communication terminal equipped with a software component according to an embodiment of the present invention.

5A to 5D are exemplary views illustrating a data format exchanged between a mobile communication terminal and a smart card.

*** Explanation of symbols for the main parts of the drawing ***

100. mobile communication terminal, 110. I / O interface device, 120. multimedia device,

130. Branch Bridge, 140/210. Interface, 200. smart card,

220. Device manager, 230. Device driver, 240. Application

The present invention relates to a communication device and a method between a smart card equipped with a software component and a mobile communication terminal. In particular, a software component mounted on both a host and a smart card can be mounted only on a smart card to drive an application. The present invention relates to a communication device and a method between a smart card equipped with a component and a mobile communication terminal.

In general, smart cards are portable cards incorporating microprocessors, memory, and various applications using integrated circuit technology in a credit card-sized plastic card. The smart cards are classified into memory cards and CPU-embedded cards according to whether they have a memory and a CPU.

As described above, the smart card has a built-in encryption algorithm, which enables identification, mutual authentication, encryption of I / O data, and storage of information.It provides high security and portability for financial settlement, program storage, identification, medical card use, etc. It is used in fields where sex and convenience are required.

In addition, the smart card is embedded in the mobile communication terminal to enable financial settlement, transportation fee payment, credit card settlement, and the like.

As described above, in order to provide functions such as financial settlement, transportation fee payment, credit card payment, etc. in a mobile communication terminal having a smart card, an application processor, an operating system (OS), a platform that performs the corresponding function on the smart card, etc. The applications must be loaded.

That is, in order to operate an application that provides additional functions such as financial payment, transportation fee payment, credit card payment, and the like in a mobile communication terminal with a smart card, related software components are moved on the smart card as well as shown in FIG. 1. Also on the communication terminal, software components mounted on the card and corresponding software components capable of communicating with each other should be mounted.

As described above, in the related art, there is a problem in that related software components must be mounted on both the mobile communication terminal and the smart card embedded in the mobile communication terminal.

On the other hand, as the memory size of the smart card is increased due to the development of semiconductor technology, various applications mounted on the mobile communication terminal have gradually moved to the smart card.

Accordingly, there is a demand for a technology that allows software components mounted on both a mobile communication terminal and a smart card to be mounted only on a smart card so as to drive an application.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described needs, and includes an I / O interface device provided in a mobile communication terminal by mounting a software component only on a smart card and having a branch bridge for mediating communication between the mobile communication terminal and the smart card. Smart card with a software component that transmits signals and data received from the smart card to the smart card side, and transmits the signals and data received from the smart card to the corresponding I / O interface device to run the application on the smart card; It is an object of the present invention to provide a communication apparatus and method between mobile communication terminals.

In order to achieve the above object, a communication device between a smart card equipped with a software component and a mobile communication terminal according to an embodiment of the present invention includes a baseband processor, an I / O interface device, and a hardware including only a memory. It is provided on the communication terminal and stores identification information for each I / O interface device, and transmits the device identification information to the smart card by adding the device identification information to the signal / data authorized from the I / O interface device. A branch bridge for transmitting the signal / data to the identified I / O interface device based on the device identification information included in the data format received from the; The signal is provided on a smart card on which a software component including an operating system (OS), a platform, and an application is mounted, and is determined based on device identification information included in a data format received from the mobile communication terminal. A device manager for transmitting the data to the mobile communication terminal by adding device identification information to the signal / data received from the device driver; One-to-one correspondence with the I / O interface device is provided on the smart card, and the signal / data received from the corresponding I / O interface device is transmitted to the activated application, and the signal / It is preferable to include a device driving unit for transmitting data to the device manager.

Further, the branch bridge transmits the device identification information to the smart card by adding the device identification information to the signal / data received from the I / O interface device, and communicates the data format appended with the device identification information between the mobile communication terminal and the smart card. After converting the interface data format suitable for the interface to the smart card and deleting the interface related information from the interface data format received from the smart card, the device identification information included in the data format received from the smart card is added. It is desirable to transmit the signal / data to the I / O interface device identified on the basis.

The device manager, upon receiving the interface data format from the mobile communication terminal, deletes the interface related information from the interface data format, and then based on the device identification information included in the data format received from the mobile communication terminal. And transmits the signal / data to the determined device driver and transmits the device identification information to the mobile communication terminal by adding device identification information to the signal / data received from the device driver, wherein the data format to which the device identification information is appended is transmitted. It is preferable to convert the interface data format suitable for the communication interface between the smart card and the smart card to be transmitted to the mobile communication terminal.

Preferably, the mobile communication terminal and the smart card further include an interface unit for transmitting and receiving the interface data format.

The platform and OS mounted on the smart card are preferably an open platform and an open OS that support installation and deletion processing of various applications (or data) even after card issuance.

Meanwhile, in the communication method between a smart card equipped with a software component and a mobile communication terminal according to an embodiment of the present invention, the I / O interface device receives a signal / data inputted from an I / O interface device in a branch bridge provided in the mobile communication terminal. Adding identification information assigned to the / O interface device, and then converting the interface data format to be transmitted to the smart card; The device management unit on the smart card receiving the interface data format transmitted by the mobile communication terminal deletes the interface related information, and the signal / data through the device driver determined based on the device identification information added to the signal / data. Transmitting to the active application; When the device driver that receives the signal / data from the application that performed the operation based on the signal / data transmits the signal / data to the device manager, the device manager adds device identification information to the signal / data. Converting the interface data format and transmitting the converted interface data to the mobile communication terminal; The branch bridge receiving the interface data format transmitted from the smart card side deletes the interface related information and transfers the signal / data to the identified I / O interface device based on the device identification information added to the signal / data. It is preferred to include a process to.

Further, the transmitting of the signal / data to the smart card in the mobile communication terminal may include: adding identification information of the I / O interface device to the signal / data received from the I / O interface device; Converting a data format appended with the device identification information into an interface data format suitable for a communication interface between the mobile communication terminal and a smart card; Preferably, the interface data format is transmitted to the smart card.

The transmitting of the signal / data to the application by the device manager may include: deleting interface related information from an interface data format received from the mobile communication terminal; Identifying a device driver to which the signal / data is to be transmitted based on device identification information appended to the signal / data from which the interface related information is deleted, and transmitting the signal / data to the identified device driver; And transmitting the signal / data from the device driver to an active application.

In the transmitting of the signal / data from the smart card to the mobile communication terminal, the application receives the signal / data from the device driver to perform an operation based on the signal / data, and the signal according to the result. Transferring data to a corresponding device driver (the device driver to process the signal / data); Transmitting the signal / data to the device manager by the device driver; Attaching, by the device manager, device identification information to the signal / data received from the device driver; Converting a data format appended with the device identification information into an interface data format suitable for a communication interface between the mobile communication terminal and a smart card; Preferably, the interface data format is transmitted to the mobile communication terminal.

The transmitting of the signal / data to the I / O interface device in the branch bridge may include: deleting interface related information from an interface data format received from the smart card; Identify the I / O interface device to which the signal / data is to be transmitted based on device identification information appended to the deleted signal / data and transmit the signal / data to the identified I / O interface device. It is preferable that the step comprising the.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the communication device and method between a smart card and a mobile communication terminal equipped with a software component according to an embodiment of the present invention.

2 is a road showing an internal structure of a mobile communication terminal and a smart card according to the present invention, a baseband processor, an input / output (I / O) interface device (keyboard, display, camera, etc.) and an application on a mobile communication terminal that is a host. Only hardware such as a processor, a memory, a device driver, and the like are mounted, and software components such as an operating system (OS), a platform, and an application are mounted only on a smart card.

Here, the platform mounted on the smart card is preferably equipped with an open platform that supports processing such as installation and deletion of various applications (or data) even after issuing the card, and the OS is also preferably equipped with an open OS.

3 is a road schematically showing the configuration of a communication device between a smart card and a mobile communication terminal equipped with a software component according to an embodiment of the present invention, the mobile communication terminal 100 is a keyboard, display, microphone, speaker, camera, etc. I / O interface devices (110: 110-1, 110-2, 110-3, ..., 110-n), the multimedia device 120, the branch bridge (130), the interface unit ( 140).

In such a configuration, the I / O interface device 110: 110-1, 110-2, 110-3,..., 110-n receives a branch bridge 130 by receiving various input signals necessary for performing an operation from a terminal user. ) And output data received from the branch bridge 130 and the multimedia apparatus 120, or drive according to the control signal received from the branch bridge 130, and then output the data to the branch bridge 130. Is applied.

The multimedia device 120 analyzes the multimedia data received from the smart card 200 through the branch bridge 130 and transmits the multimedia data to the output interface device, but the image data included in the multimedia data is a display and included in the multimedia data. Audio data is delivered to the speaker.

Branch bridge 130 identifies identification (ID) for each I / O interface device (110: 110-1, 110-2, 110-3, ..., 110-n) and identification for multimedia device (120). After storing the information, if I / O interface devices 110: 110-1, 110-2, 110-3, ..., 110-n receive input signals or data necessary for performing the operation, I / O Device identification information (identification of the I / O interface device that has transmitted the input signal or data) to the input signal or data received from the O interface device (110: 110-1, 110-2, 110-3, ..., 110-n) Information), and converts the data format in which the device identification information is added to the input signal or data into an interface data format suitable for the communication interface between the mobile communication terminal 100 and the smart card 200, and then converts the converted interface data format into an interface. The smart card 200 is transmitted through the unit 140.

In addition, when the branch bridge 130 receives the interface data format from the smart card 200 through the interface unit 140, the branch bridge 130 deletes the interface related information from the received interface data format, and the interface related information is added to the deleted data format. Based on the attached device identification information, after grasping the I / O interface device or the multimedia device 120 to which the control signal or data authorized from the smart card 200 is transmitted, the identified I / O interface device 110 or The control signal or data received from the smart card 200 is applied to the multimedia apparatus 120.

Meanwhile, the interface unit 140 transmits the interface data format received from the branch bridge 130 to the smart card 200, and applies the interface data format received from the smart card 200 to the branch bridge 130. .

On the other hand, the smart card 200 mounted in the mobile communication terminal 100 that is a host includes an interface unit 210, a device manager 220, and a plurality of device drivers 230: 230-1, 230-2, and 230-. 3, 230-4..., 230-n, 230-(n + 1), and applications 240: 240-1, 240-2, 240-3,.

In such a configuration, the interface unit 210 applies the interface data format received from the mobile communication terminal 100 to the interface manager 220, and applies the interface data format received from the interface manager 220 to the mobile communication terminal. Transmit to (100) side.

When the device manager 220 receives the interface data format from the mobile communication terminal 100 that is the host through the interface unit 210, the device manager 220 deletes the interface related information from the received interface data format and deletes the interface related information. Based on the device identification information added to the identification information, the device driver 230 to which the input signal or data received from the mobile communication terminal 100 is to be applied is identified, and then the device driver 230 is identified from the mobile communication terminal 100. Apply the received input signal or data.

In addition, when the device manager 220 receives a control signal or data from the device driver 230, the device manager 220 matches the device identification information (the device driver that has transmitted the control signal or data) to the control signal or data received from the device driver 230. The data format in which the device identification information is added to the control signal or data, and converts the data format into an interface data format suitable for the communication interface between the mobile communication terminal 100 and the smart card 200, and then converts the data format. The interface data format is transmitted to the mobile communication terminal 100 through the interface unit 210.

Meanwhile, the device drivers 230: 230-1, 230-2, 230-3, 230-4,..., 230-n, and 230-(n + 1) are provided in the mobile communication terminal 100 as a host. One-to-one correspondence and provision of the I / O interface devices 100: 110-1, 110-2, 110-3, ..., 110-n and the multimedia device 120 to receive signals and data received from the corresponding devices. The processor transmits the processed signal to an active application or transmits a control signal or data received from the corresponding application to the device manager 220.

In addition, each of the applications 240: 240-1, 240-2, 240-3,..., 240-m performs an operation corresponding to the input signal or data received from the device driver 230. When there is a control signal or data to be transmitted to the mobile communication terminal 100 as a host, the control signal or data is transmitted to the device driver 230.

4 is a flowchart illustrating a communication method between a smart card and a mobile communication terminal equipped with a software component according to an embodiment of the present invention.

First, when the branch bridge 130 receives an input signal or data necessary for performing an operation from the I / O interface device 110 (S10), the branch bridge 130 uses I / O interface device-specific identification information to store the I / O interface device. The device format information (identification information of the I / O interface device which transmitted the input signal or data) is added to the input signal or data input from the O interface device 110 (S12), and the data format to which the device identification information is added is transferred to the mobile communication. After converting the interface data format suitable for the communication interface between the terminal 100 and the smart card 200 (S14), the converted interface data format is transmitted to the smart card 200 through the interface unit 140 (S16). ).

In operation S16, the device manager 220 receiving the interface data format transmitted by the mobile terminal 100 as a host through the interface unit 210 deletes interface-related information from the received interface data format (S18). ), Based on the device identification information added to the data format from which the interface related information is deleted, the device driver 230 to which an input signal or data received from the mobile communication terminal 100 is transmitted is identified (S20), and the identified device The driver 230 transmits an input signal or data received from the mobile communication terminal 100 (S22).

The device driver 230 receiving the input signal or data from the device manager 220 through the process S22 may transmit the received input signal or data to the active application 240 or process the input signal or data. After activating the application 240 transmits an input signal or data to the application (240) (S24).

After receiving the input signal or data from the device manager 220 through the process S24, the application 240 performs an operation based on the received input signal or data (S26), and then the control signal or data according to the result. To transmit to the device driver 230 (S28).

In operation S28, the application 240 knows the I / O interface device 110 that will receive the control signal or data according to the processing result, and thus, the device driver 230 matching the corresponding I / O interface device 110. Control signal or data.

The device driver 230 receiving the control signal or data from the application 240 through the process S28 transmits the control signal or data received from the application 240 to the device manager 220 (S30), and the device driver. The device manager 220 receiving the control signal or data from the 230 adds the device identification information (identification information of the I / O interface device to receive the control signal or data) to the control signal or data (S32). After converting the data format in which the device identification information is added to the data into an interface data format suitable for the communication interface between the mobile communication terminal 100 and the smart card 200 (S34), the interface data format is converted into the interface unit 210. Through the transmission to the mobile communication terminal 100 (S36).

Meanwhile, the interface data format transmitted by the device manager 220 included in the smart card 200 through the interface unit 210 to the mobile communication terminal 100 as a host through the interface S36 is the interface unit 140. The branch bridge 130 is received through the branch bridge 130. When the branch bridge 130 receives the interface data format from the smart card 200 through the interface unit 140, the interface related information is deleted from the received interface data format. In operation S38, the I / O interface device or the multimedia device 120 to which the control signal or data authorized from the smart card 200 is transmitted is based on the device identification information added to the data format from which the interface related information is deleted. After checking (S40), the control scene received from the smart card 200 to the identified I / O interface device 110 or multimedia device 120 Or forwards the data (S42).

Through the process S42, the I / O interface device 110 or the multimedia device 120, which receives the control signal or data from the branch bridge 130, processes and outputs the received data, or according to the received control signal. The operation is performed (S44).

Hereinafter, a communication process between a smart card equipped with a software component according to the present invention and a mobile communication terminal will be described with reference to FIGS. 5A to 5D.

First, when a menu key input is input through the keyboard device 110-3 of the I / O interface device 110, the branch bridge 130 displays the keyboard device in data (menu key data) as shown in FIG. 5A. After converting the data format to which the identification information assigned to 110-3 is added and adding the keyboard identification information to the interface data format suitable for the communication interface between the mobile communication terminal 100 and the smart card 200, the converted interface The data format is transmitted to the smart card 200 through the interface unit 140.

As described above, the interface data format transmitted by the mobile communication terminal 100 is received by the device manager 220 through the interface unit 210 provided in the smart card 200, the device manager 220 Deletes interface-related information from the received interface data format, transfers the data to the keyboard driver 230-4 based on the keyboard identification information added to the data format from which the interface-related information is deleted, and the device manager 220. The keyboard driver 240-4 receiving data (menu key data) from the screen activates the menu application 240-1 that manages the menu based on the received data.

The menu application 240-1 activated by the keyboard driver 230-4 outputs menu screen data to the multimedia driver 230-1, and the multimedia driver 230-1 outputs the menu application 240-1. The menu screen data received from) is transferred to the device manager 220.

As described above, when the device manager 220 receives the menu screen data from the multimedia driver 230-1, the device manager 220 adds multimedia device identification information to the received menu screen data as shown in FIG. 5B, and adds the menu screen data to the menu screen data. After converting the data format appended with the multimedia device identification information into an interface data format suitable for the communication interface between the mobile communication terminal 100 and the smart card 200, the converted interface data format is converted through the interface unit 210 through the mobile communication terminal. Send to 100.

Meanwhile, the branch bridge 130 receiving the interface data format from the smart card 200 through the interface unit 140 deletes the interface related information from the received interface data format and adds the interface related information to the deleted data format. Based on the identification information of the multimedia device, the menu screen data received from the smart card 200 is transferred to the multimedia device 120.

As described above, the multimedia apparatus 120 that receives the menu screen data from the branch bridge 130 processes the received menu screen data and outputs the processed menu screen data to the display device 110-1.

Meanwhile, the terminal user selects a desired menu by referring to the menu screen displayed on the display device 110-1. When the media player menu is mapped to the 3 key on the menu screen, the terminal user presses the 3 key. Select the media player menu.

Accordingly, the keyboard device 110-3 transmits the third key data to the branch bridge 130, and the branch bridge 130 that receives the third key data from the keyboard device 110-3 is shown in FIG. 5C. Similarly, the data format to which the identification information assigned to the keyboard device 110-3 is added to the third key data and the keyboard identification information is added is the interface data format corresponding to the communication interface between the mobile communication terminal 100 and the smart card 200. After the conversion, the converted interface data format is transmitted to the smart card 200 through the interface unit 140.

As described above, the interface data format transmitted by the mobile communication terminal 100 is received by the device manager 220 through the interface unit 210 provided in the smart card 200, the device manager 220 Deletes interface-related information from the received interface data format, transfers the data to the keyboard driver 230-4 based on the keyboard identification information added to the data format from which the interface-related information is deleted, and the device manager 220. The keyboard driver 230-4 receiving data (key number 3 data) from the controller transmits the received data to the currently activated menu application 240-1.

On the other hand, when the menu application 240-1 receives the third key data from the keyboard driver 230-4, the menu application 240-1 executes the media player mapped to the third key. 2) is activated, and the media player application 240-2 activated by the menu application 240-1 outputs the media player screen data and the multimedia file to the multimedia driver 230-1.

As described above, the multimedia driver 230-1 that receives the media player screen data and the multimedia file from the media player application 240-2 may transmit the media player screen data and the multimedia file received from the media player application 240-2. To the device manager 220, the device manager 220 adds the multimedia device identification information to the media player screen data and the multimedia file received from the multimedia driver 230-1, as shown in FIG. 5D, and the multimedia device. After converting the data format appended with identification information into an interface data format suitable for the communication interface between the mobile communication terminal 100 and the smart card 200, the converted interface data format is converted through the interface unit 210 to the mobile communication terminal 100. To send).

Meanwhile, the branch bridge 130 receiving the interface data format from the smart card 200 through the interface unit 140 deletes the interface related information from the received interface data format and adds the interface related information to the deleted data format. Based on the identification information of the multimedia device, the media player screen data and the multimedia file received from the smart card 200 are transferred to the multimedia device 120.

As described above, the multimedia device 120 that receives the media player screen data and the multimedia file from the branch bridge 130 processes the received media player screen data and the multimedia file to transfer the image data to the display device 110-1. The audio data is output to the speaker device 110-2.

The communication device and method between the smart card and the mobile communication terminal equipped with the software component of the present invention can be implemented in various modifications within the scope of the technical idea of the present invention without being limited to the above-described embodiment.

According to the communication device and method between the smart card and the mobile communication terminal equipped with the software component of the present invention as described above, the branch bridge for mounting the software component only on the smart card, and mediates the communication between the mobile communication terminal and the smart card The device identification information is added to the signal and data received from the I / O interface device provided in the mobile communication terminal and transmitted to the smart card, and the device identification information added to the signal and data received from the smart card is referred to. By sending to the I / O interface device, it is possible to run an application on a smart card.

Claims (10)

It is provided on a mobile communication terminal equipped only with hardware including a baseband processing unit, an I / O interface device, and a memory, and stores identification information for each I / O interface device, and is applied from the I / O interface device. A branch that transmits the signal / data to the I / O interface device identified based on the device identification information included in the data format received from the smart card, by adding the device identification information to the received signal / data. A bridge; The signal is provided on a smart card on which a software component including an operating system (OS), a platform, and an application is mounted, and determined based on device identification information included in a data format received from the mobile communication terminal. A device manager for transmitting the data to the mobile communication terminal by adding device identification information to the signal / data received from the device driver; One-to-one correspondence with the I / O interface device is provided on the smart card, and the signal / data received from the corresponding I / O interface device is transmitted to the activated application, and the signal / Communication device between a smart card and a mobile communication terminal equipped with a software component comprising a device driver for transmitting data to the device manager. The method of claim 1, wherein the branch bridge, The device identification information is added to the signal / data received from the I / O interface device and transmitted to the smart card, but the data format to which the device identification information is added is converted into an interface data format suitable for the communication interface between the mobile communication terminal and the smart card. Convert it and send it to the smart card, After deleting interface-related information from the interface data format received from the smart card, the signal / data is transmitted to the I / O interface device identified based on the device identification information included in the data format received from the smart card. A communication device between a smart card and a mobile communication terminal equipped with a software component, characterized in that. The method of claim 1, wherein the device management unit, When the interface data format is received from the mobile communication terminal, the interface related information is deleted from the interface data format, and then the device driver is determined based on the device identification information included in the data format received from the mobile communication terminal. Transmit signals / data, The device identification information is added to the signal / data received from the device driver and transmitted to the mobile communication terminal, and the data format including the device identification information is converted into an interface data format suitable for the communication interface between the mobile communication terminal and the smart card. And a smart card equipped with a software component and a mobile communication terminal for transmitting to the mobile communication terminal. The method of claim 2 or 3, wherein the mobile communication terminal and the smart card, And an interface unit for transmitting / receiving the interface data format, respectively. The platform and the OS mounted on the smart card, A communication device between a smart card and a mobile communication terminal equipped with a software component, which is an open platform and an open OS that supports installation and deletion processing of various applications (or data) even after card issuance. In the branch bridge provided in the mobile communication terminal, adding identification information allocated to the I / O interface device to the signal / data received from the I / O interface device, converting the interface data format, and transmitting the converted data to the smart card; ; The device management unit on the smart card receiving the interface data format transmitted by the mobile communication terminal deletes the interface related information, and the signal / data through the device driver determined based on the device identification information added to the signal / data. Transmitting to the active application; When the device driver that receives the signal / data from the application that performed the operation based on the signal / data transmits the signal / data to the device manager, the device manager adds device identification information to the signal / data. Converting the interface data format and transmitting the converted interface data to the mobile communication terminal; The branch bridge receiving the interface data format transmitted from the smart card side deletes the interface related information and transfers the signal / data to the identified I / O interface device based on the device identification information added to the signal / data. A communication method between a smart card and a mobile communication terminal equipped with a software component comprising a step of performing. The method of claim 6, wherein the transmitting of the signal / data from the mobile communication terminal to the smart card comprises: Adding identification information of the I / O interface device to the signal / data received from the I / O interface device; Converting a data format appended with the device identification information into an interface data format suitable for a communication interface between the mobile communication terminal and a smart card; And transmitting the interface data format to the smart card. The method of claim 6, wherein the transmitting of the signal / data from the device manager to the application comprises: Deleting interface related information from an interface data format received from the mobile communication terminal; Identifying a device driver to which the signal / data is to be transmitted based on device identification information appended to the signal / data from which the interface related information is deleted, and transmitting the signal / data to the identified device driver; And transmitting, by the device driver, the signal / data to an activated application. The method of claim 6, wherein the transmitting of the signal / data from the smart card to the mobile communication terminal comprises: Performing an operation based on the signal / data in an application that receives the signal / data from the device driver, and transferring the signal / data according to the result to the corresponding device driver (the device driver to process the signal / data) Wow; Transmitting the signal / data to the device manager by the device driver; Attaching, by the device manager, device identification information to the signal / data received from the device driver; Converting a data format appended with the device identification information into an interface data format suitable for a communication interface between the mobile communication terminal and a smart card; And transmitting the interface data format to the mobile communication terminal. The method of claim 6, wherein the transmitting of the signal / data to the I / O interface device in the branch bridge comprises: Deleting interface related information from an interface data format received from the smart card; Identify the I / O interface device to which the signal / data is to be transmitted based on device identification information appended to the deleted signal / data and transmit the signal / data to the identified I / O interface device. And a smart card equipped with a software component and a mobile communication terminal.

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