KR100974663B1 - Slot device connecting mobile phone for operating smart card and method thereof - Google Patents

Abstract

Disclosed are a slot device and a method of operating the same, connected to a mobile communication terminal and operating a smart card. The present invention provides a smart card operating method in a slot device connected to a mobile communication terminal, the method comprising: connecting to the mobile communication terminal; Confirming whether the smart card is connected to the slot device and transmitting the smart card mounting confirmation result information to the mobile communication terminal; If the smart card supports an IC-USB interface, activating the IC-USB interface; And relaying data communication between the mobile communication terminal and the smart card through the IC-USB interface, wherein the mobile communication terminal is connected to the external smart card through the slot device. It may include a card operating method. According to the present invention, in a slot device for relaying communication of a mobile communication terminal having 20 or 24 connection terminals and a smart card having 8 contacts, the contact point of the slot device connected to the smart card according to the interface type of the smart card. There is an effect that can be changed.

Slot Device, Interface, USB, Smart Card, USIM

Description

Slot device connecting mobile phone for operating smart card and operating method thereof {Slot device connecting mobile phone for operating smart card and method}

The present invention relates to a service for operating a smart card in a slot device that connects a mobile communication terminal and a smart card. More particularly, the present invention relates to a slot device that uses an external smart card in a slot device and uses the application. It is about.

Smart cards such as Subscriber Identify Module (SIM) cards, User Identify Module (UIM) cards, and User Subscriber Identify Module (USIM) cards are cards that store subscriber identification and authentication information. When installed, any terminal can be used as its own terminal without distinction between mobile communication terminals.

Because these smart cards are usually mounted inside the phone's case, the user must remove the case from the phone and then remove the existing smart card in order to fit the new smart card into the phone. The trend towards miniaturization of phones has made it difficult to mount large capacity smart cards inside mobile phones.

In addition, although a large capacity USIM technology is spreading for continuous use of user content in connection with WCDMA terminal mobility, it has no service compatibility with the current terminal due to the application of a new interface. That is, the conventional high-capacity USIM uses 8 contacts of ISO 7816, which is used by the existing USIM. However, pin assignments are incorrect as the IC-USB standard is adopted for the high speed interface.

Therefore, there is a need for a device that can connect a large capacity smart card to an external mobile phone, but can be mapped to an existing 20-pin or 24 USB port. In addition, there is a need for a device capable of applying a pin arrangement for a high-capacity, high-speed interface adopted as a standard in a current terminal.

Accordingly, the present invention has been made to solve the above problems, and provides a slot apparatus and method for relaying communication of a mobile communication terminal having 20 pins or 24 connection terminals and a smart card having 8 contacts. will be.

In addition, the present invention is to provide a slot device and method for changing the contact point of the slot device connected to the smart card according to the interface type of the smart card.

According to an aspect of the present invention, the present invention provides a smart card operating method in a slot device connected to a mobile communication terminal, the method comprising: connecting to the mobile communication terminal; Confirming whether the smart card is connected to the slot device and transmitting the smart card mounting confirmation result information to the mobile communication terminal; If the smart card supports an IC-USB interface, activating the IC-USB interface; And relaying data communication between the mobile communication terminal and the smart card through the IC-USB interface, wherein the mobile communication terminal is connected to the external smart card through the slot device. It can provide a card operation method.

According to another aspect of the present invention, the present invention can provide a recording medium in which instructions executable in the digital processing apparatus are implemented by the above method and in which a program can be read by the digital processing apparatus.

According to another aspect of the present invention, the present invention provides a slot device connected to a mobile communication terminal for operating a smart card, comprising: at least one first connection unit to which the smart card is mounted; A second connection part electrically connected to a connection terminal of the first connection part and coupled to the mobile communication terminal; And checking whether the smart card is connected to the slot device to transmit the smart card mounting confirmation result information to the mobile communication terminal, and relaying the activation of the smart card according to an activation command input to the mobile communication terminal. A control unit; And a pin arrangement changing unit configured to check whether the smart card supports a USB interface and to change the pin arrangement of a region connected to the smart card according to whether the smart card supports the USB interface. A slot device for relaying communication between the mobile communication terminal and the activated smart card may be provided through the first connection unit.

According to the present invention, it is possible to provide a slot apparatus and method for relaying communication between a mobile communication terminal having 20 pins or 24 connection terminals and a smart card having 8 contacts.

In addition, the present invention can provide a slot device and method for changing the contact point of the slot device connected to the smart card according to the interface type of the smart card.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention. In the following description of the present invention, when it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

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

1 is a view for explaining the communication mechanism between the terminal and the smart card according to the prior art.

As shown in Fig. 1, communication between a terminal and a smart card according to the prior art follows a half duplex mode communication method in the form of request / response using a syntax defined in the ISO 7816 standard. In general, the transmission scheme defined in the ISO 7816 standard supports low-speed data communication, eg, 9.6 kbps, using serial bidirectional transmission lines.

The ISO 7816 standard provides two transport protocols.

One of them, the T = 0 protocol, is a transmission protocol used in the early days of ISO 7816 and follows the asynchronous half-duplex byte transmission scheme.

The remaining T = 1 protocols are called block transfer protocols, and there is room for some improvement in security compared to byte transfer protocols. Since adopting T = 0 protocol in GSM's 11.11 Subscriber Identification Module (SIM), next-generation credit card EMVs have adopted both T = 0 and T = 1 protocols.

Referring to FIG. 1, a command is initiated by a terminal, and a card operating system (Card OS) embedded in a smart card interprets a command received from the terminal to update a state of data stored in the smart card, Sends a response to the received command to the terminal.

ISO 7816-7 provides a command message and a response message transmitted and received between a terminal and a smart card using a conventional application protocol data unit (APDU).

Currently, the high-speed communication interface between the terminal and the smart card, which is being targeted for 3GPP Release 7, includes the SWP interface for RF as well as the serial interface of ISO 7816.

Conventional USIM, where USIM is a form of smart card, generally means a subscriber authentication module mounted on a terminal supporting WCDMA, which is a third-generation asynchronous wireless access method, which is a contact type and a contactless type. In order to simultaneously support different types of modems, different modems are used, and logical channels for each type are separated to provide services.

In the following description will be described with respect to the present invention including a slot device that is an external module that controls the communication between the smart card and the mobile communication terminal in the middle.

2 is a diagram schematically illustrating a configuration of a system for operating a plurality of smart cards using a slot device according to an embodiment of the present invention.

Referring to FIG. 2, a system for operating a smart card using a slot device according to the present embodiment may include a smart card 200, a slot device 300, and a mobile communication terminal 400.

The smart card 200 is a smart card having functions such as user authentication, saving money, global roaming, and electronic commerce, and can be combined with the mobile communication terminal 400 through the slot device 300 to be described later. The smart card 200 coupled through the slot device 300 may perform contact communication with the mobile communication terminal 400 according to the ISO 7816 standard or a high speed communication interface. In addition, the smart card 200 may perform contactless communication with an external device, for example, an automated teller machine (ATM) according to the ISO-14443 standard method.

The smart card 200 according to the present embodiment may be mounted in a plurality of slot devices or may be embedded in the mobile communication terminal 400.

The slot device 300 allows the smart card 200 to be coupled to the outside of the mobile communication terminal 400. To this end, one side of the slot device 300 may be implemented to be coupled to the smart card 200, the other side of the slot device 300 may be implemented to be coupled to the mobile communication terminal 400. As shown, the slot device may be equipped with a plurality of smart cards.

The mobile communication terminal 400 may perform contact communication with the smart card 200 coupled through the slot device 300. In this case, the mobile communication terminal 400 may perform contact communication with the smart card 200 according to the ISO 7816 standard or a high speed communication interface.

3 is a functional block diagram showing a configuration of a slot apparatus 300 according to an embodiment of the present invention, Figure 4 is a first connection having a pin arrangement defined in ISO 7816-2 according to an embodiment of the present invention FIG. 5 is a diagram illustrating a structure of a first connection unit capable of simultaneously supporting a USB interface and an RF interface according to an embodiment of the present invention.

Referring to FIG. 3, the slot apparatus 300 according to the present exemplary embodiment may include a controller 310, a first connector 320, a second connector 330, and a pin arrangement changer 340.

The first connection part 320 may be coupled to the contact part 22 of the smart card 200. To this end, the first connector 320 may be configured as a socket in which a plurality of contact terminals are arranged at a position corresponding to each contact of the smart card 200.

The pin arrangement of the first connector 320 may vary according to a communication interface with the smart card 200. For example, depending on the USB communication method with the smart card 200, it may be an 8 pin contact of ISO 7816, or may be provided with a contact according to the IC-USB standard for a high speed interface.

First, a case in which the first connector 320 according to the present embodiment has a pin arrangement of an 8-pin contact of ISO 7816 will be described with reference to FIG. 4.

ISO 7816 part 2 defines the arrangement and location of the electrical contacts. That is, define the purpose, location and electrical characteristics of the metal contact of the smart card. The smart card defined in ISO 7816 part 2 is composed of a total of eight (Pin), each pin arrangement is as shown in FIG.

C1 (Vcc, 410) is a pin that provides operating power to a microprocessor chip on a smart card via a power line.

C2 (RST) 420 is a pin that receives a predetermined reset signal from a device that communicates with a smart card via a predetermined reset line. The microprocessor on the smart card, i.e., the card operating system, is C2. Upon receiving the reset signal through 420, a series of reset commands is started.

C3 (CLK, 430) is a pin that provides a clock signal to the microprocessor chip of the smart card through the clock signal line. Here, the clock signal may provide a common framework for the communication speed of the smart card and data communication between the smart card and an external interface device such as a terminal such as a mobile terminal.

C5 (GND, 450) is a pin that provides a common electrical ground between the external interface device and the smart card.

C6 (Vpp, 460) is a pin that provides the programming power used to program the EEPROM (Electrically-Erasable Programmable Read-Only Memory) of the first smart card.

In particular, C6 460, which provides the EEPROM programming voltage, has been widely used in the early stages, but is not used due to the recent development of semiconductor technology.

C7 (I / O) 470 is an input / output pin for providing a half-duplex communication channel between the smart card reader and the smart card.

Reserved for Future Use (RFU, 440) and C8 (Reserved for Future Use: RFU, 580) are reserved pins for future use and have no special features defined yet.

In addition, a case in which the first connector 320 according to the present embodiment has a pin arrangement of an 8-pin contact of the IC-USB standard will be described with reference to FIG. 5.

C1 510, C2 520, C3 530, C5 550, and C7 570 shown in FIG. 5 are respectively C1 410, C2 420, and C3 ( 430, C5 450, and C7 470 have the same function and electrical characteristics, so a description of the corresponding pin will be omitted in the description of this drawing.

C4 (USB +, 540) and C8 (USB-, 580) according to the present embodiment may be used as pins for providing a high speed communication interface of IC-USB.

The C5 660 is used as a pin for providing a full duplex single wire protocol (SWP) between the smart card and the NFC module. In general, an over-the-air (OTA) method is used as a technology for wirelessly transmitting information on the smart card 200. In particular, the OTA technology may be used for the purpose of issuing a credit card and a traffic card to the smart card 200 through wireless.

In the present exemplary embodiment, the case in which the first connection unit 320 and the smart card 200 are combined in a one-to-one manner is described as an example. However, according to another exemplary embodiment, a plurality of first connection units 320 may be provided. Of course, a plurality of smart cards 200 may be mounted accordingly.

The second connector 330 may be combined with the connector of the mobile communication terminal 400. To this end, the second connector 330 may include a plurality of connection terminals. At this time, the number and arrangement of connection terminals may follow the external terminal connection standard of the mobile communication terminal 400.

Specifically, according to the external terminal connection standard of the mobile communication terminal 400, the second connection portion 330 may include 20 or 24 connection terminals, 20 communication terminals when communicating according to the interface according to ISO 7816 Looking at the function of the seven connection terminals (D1 ~ D7) corresponding to 1 to 7 of the [Table 1].

Connection terminal function D1 GND D2 Power D3 UART Tx D4 UART Rx D5 Reserved D6 Reserved D7 Device-Sense / Detect

Referring to [Table 1], it can be seen that the connection terminal D1 is provided with a ground reference voltage, and the connection terminal D2 is a connection terminal provided with a voltage from the mobile communication terminal 400. The connection terminal D3 may be a connection terminal for transmitting data to the mobile communication terminal 400, and the connection terminal D4 may be a connection terminal for receiving data from the mobile communication terminal 400.

When the smart card 200 does not support the IC-USB interface, the slot device 300 may transmit an application mounted on the smart card 200 to the mobile communication terminal 400 according to the interface according to ISO 7816.

In this case, low-speed communication is inevitably compared to the IC-USB interface, and the Tx / Rx terminals of the second connection unit 330 corresponding to the connection terminals of the mobile communication terminal 400 are separated into D3 and D4, respectively. Since the first connection unit 320 connected to the smart card 200 performs both transmission and reception with one I / O, the first connection unit 320 must branch and transmit it to the mobile communication terminal 400.

  Meanwhile, it can be seen that the connection terminals D5 and D6 are preliminary connection terminals to which no special function is assigned, and the connection terminal D7 is a connection terminal for recognizing the slot apparatus 300. Here, a resistor of a predetermined size may be connected to the connection terminal D7.

The remaining connection terminals except for the connection terminal D7 may be connected to a contact having a corresponding function among the plurality of contacts of the first connection part 320, respectively. Specifically, the connection terminal D1 may be connected to the contact C5 receiving the ground reference voltage, the connection terminal D2 may be connected to the contact C1 receiving the voltage required for driving the smart card 200, and the connection terminals D3 and D4 may be connected to the data. Can be connected with contact C7 for input / output. In addition, the connection terminal D5 may be connected to the contact C3 receiving the clock signal, and the connection terminal D6 may be connected to the contact C2 receiving the reset signal.

In addition, when the second connection unit 330 communicates according to the IC-USB interface, matching of 20 or 24 connection terminals D1 to D24 and the eight contacts C1 to C8 of the first connection unit 320 is as follows. Table 2 is as follows.

Connection terminal function Contact D1 GND C5 D2 Power C1 D15, D16 Tx, Rx C7 D19 USB + C4 D18 USB- C8 D2 or D12 CLR C3 D2 or D12 RST C2

 In Table 2, the connection terminal D1 may be connected to a contact C5 provided with a ground reference voltage, and the connection terminal D2 may be connected to a contact C1 provided with a voltage required to drive the smart card 200, and the connection terminals D15 and D16 may be connected to each other. Can be connected to contact C7 for data input / output. In addition, the connection terminal D2 or D12 may be connected to the contact C3 receiving the clock signal, and the connection terminal D2 or D12 may be connected to the contact C2 receiving the reset signal.

In addition, the connection terminals D19 and D18 are pins for providing a high speed communication interface of the IC-USB, and can be connected to the contacts C4 (USB +, 540) and C8 (USB-, 580), respectively.

The pin arrangement changing unit 340 changes the pin arrangement of the first connection unit 320 according to the communication interface method between the first connection unit 320 and the smart card 200. That is, when the smart card 200 supports the IC-USB interface for high speed communication, USB communication is performed through C4 and C8 among eight contacts connected with the smart card, and C6 supports RF communication. This is as described in FIG. 5.

In addition, when the smart card 200 does not support the IC-USB interface, it changes to the pin arrangement as described in Figure 4 according to the ISO 7816 interface, in order to use the application of the smart card 200 Serial data can be received through C7 among the eight contacts connected to the smart card.

6 is a flowchart illustrating a smart card operating method in a slot device connected to a mobile communication terminal according to an embodiment of the present invention.

In operation 610, the slot apparatus 300 is connected to the mobile communication terminal 400. Specifically, the mobile communication terminal 400 drives a WiPI application mounted therein to recognize a control signal for confirming whether the external slot device 300 is connected through transmission and reception with the slot device 300. Can be.

In operation 620, the slot apparatus 300 may determine whether the smart card 200 is mounted in the slot apparatus 300, and notify the mobile communication terminal 400 of this.

In operation 630, the slot apparatus 300 relays the activation of the smart card 200. In detail, when a command for instructing activation of the user's smart card 200 is input to the mobile communication terminal 400, a method of transmitting power and a clock provided from the mobile communication terminal 400 to the smart card 200. Can be relayed.

In operation 640, the slot apparatus 300 determines whether the smart card 200 supports a IC-USB interface. If the smart card 200 supports the IC-USB interface, in step 650, the slot device 300 connects to the smart card 200 (the first connection unit 320 according to the present embodiment). ) Can be allocated as shown in FIG.

At this time, the USB communication with the smart card 200 is made through the C4 and C8 of the eight contacts of the first connection.

If the smart card 200 does not support the IC-USB interface, in step 660, the slot device 300 allocates eight connection terminals for connecting the smart card 200 to eight according to ISO-7816 as shown in FIG. 4. Can be.

At this time, in order to use the application of the smart card 200 to receive data through the serial (serial) through the C7 of the eight contacts connected to the smart card, the connection terminal of the mobile communication terminal 400 is as described above. As it is divided into a transmission (Tx) terminal and a reception (Rx) terminal, the slot device 300 must branch the serial data received from the smart card 200 and transmit to the mobile communication terminal 400, respectively.

In operation 670, data communication may be relayed by reading various information mounted in the smart card 200 according to the interface type of the smart card 200 and transmitting the information to the mobile communication terminal 400. Can be.

Meanwhile, according to another embodiment of the present invention, when two or more smart cards 200 are connected to the mobile communication terminal 400 through the slot device 300, user authentication is performed on one of the smart cards 200. In addition, the remaining smart card 200 may perform only USB communication.

For example, although a user authentication is performed by using a first smart card mounted in the mobile communication terminal 400 and connected to a mobile communication network, it is assumed that an external second smart card is mounted through the slot device 300.

Once the mobile communication terminal 400 determines whether to authenticate the user of the second smart card and communicates with the mobile communication network by using the second smart card, the application connected to the mobile communication network of the first smart card may be deactivated. Can be.

However, when the user authentication of the second smart card is not performed, the mobile communication terminal 400 communicates with the mobile communication network using the first smart card, but communicates with the second smart card in order to use various applications stored therein. Can be.

The method of the present invention as described above may be implemented in a program and stored in a computer-readable recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.).

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the invention may be varied and varied without departing from the scope of the invention.

1 is a view for explaining the communication mechanism between the terminal and the smart card according to the prior art.

2 is a view schematically showing the configuration of a system for operating a plurality of smart cards using a slot device according to an embodiment of the present invention.

3 is a functional block diagram showing the configuration of a slot apparatus 300 according to an embodiment of the present invention.

4 is a view showing a structure of a first connection part having a pin arrangement defined in ISO 7816-2 according to an embodiment of the present invention.

5 is a diagram illustrating a structure of a first connection unit capable of simultaneously supporting a USB interface and an RF interface according to an embodiment of the present invention.

6 is a flowchart illustrating a smart card operating method in a slot device connected to a mobile communication terminal according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

200: smart card 300: slot device

400: mobile communication terminal

310: control unit 320: first connection unit

330: second connecting portion 340: pin arrangement changing portion

Claims (14)

In the smart card operating method in a slot device connected to a mobile communication terminal, Connecting the slot device to the mobile communication terminal; Confirming whether the smart card is connected to the slot device and transmitting the smart card mounting confirmation result information to the mobile communication terminal; If the smart card supports an IC-USB interface, activating the IC-USB interface; And Relaying data communication between the mobile communication terminal and the smart card through the IC-USB interface; The mobile communication terminal is connected to the smart card through the slot device, The activation is smart card operating method, characterized in that the power and clock is provided to the smart card from the mobile communication terminal. The method of claim 1, The IC-USB interface includes a USB interface and an RF interface, The IC-USB interface is a smart card operating method characterized in that it is provided through the C4 and C8 of the eight contacts connected to the smart card. The method of claim 1, If the smart card does not support the IC-USB interface, Activate the pin arrangement of the area connected with the smart card to the ISO-7816 interface type, Receives serial data through C7 among the eight contacts of ISO-7816, Branching the serial data and transmitting the serial data to the transmit (Tx) and receive (Rx) terminals of the mobile communication terminal, Smart card operating method characterized in that for relaying the USB communication of the mobile communication terminal and the activated smart card. delete The method of claim 1, When at least one other smart card is connected to the mobile communication terminal or the slot device, Selecting one of the smart card and one or more other smart cards for user authentication; And And relaying a process of blocking user authentication of the remaining smart cards except for the selected smart card. delete A slot device connected to a mobile communication terminal and operating a smart card, At least one first connection unit to which the smart card is mounted; A second connection part electrically connected to a connection terminal of the first connection part and coupled to the mobile communication terminal; And A control unit which checks whether the smart card is connected to the slot device, transmits the smart card mounting confirmation result information to the mobile communication terminal, and relays activation of the smart card according to an activation command input to the mobile communication terminal; ; And A pin arrangement changing unit for checking whether the smart card supports a USB interface and changing a pin arrangement of an area connected to the smart card according to whether the smart card supports the USB interface; Relaying communication between the mobile communication terminal and the activated smart card through the first connection unit; The activation is a slot device, characterized in that the power and clock is provided to the smart card from the mobile communication terminal. The method of claim 7, wherein If the smart card supports the USB interface, Switch the pin arrangement of the area connected with the smart card to the USB interface type, And relaying USB communication between the mobile communication terminal and the activated smart card. The method of claim 8, The USB interface includes a USB interface and an RF interface, The USB interface is a slot device, characterized in that provided through the C4 and C8 of the eight contacts connected to the smart card. The method of claim 8, If the smart card does not support the USB interface, Assign the pin arrangement of the area connected with the smart card to eight contacts of the ISO-7816 interface type, Receives serial data through C7 among the eight contacts, Branching the serial data and transmitting the serial data to the transmit (Tx) and receive (Rx) terminals of the mobile communication terminal, And repeating data communication between the mobile communication terminal and the activated smart card. delete The method of claim 8, Eight contact points of the first connecting portion is connected to the connection terminal having a corresponding function of the twenty or twenty-four connecting terminals of the second connecting portion, respectively. The method of claim 12, The eight contacts C1 of the first connector are connected to D2 of the second connector to receive the voltage necessary for driving the smart card. Eight contact points C3 of the first connector are connected to D5 of the second connector to receive a clock signal. The method of claim 8, The control unit When at least one other smart card is connected to the mobile communication terminal or the slot device, Select one of the smart card and one or more other smart cards for user authentication, And relaying a process of blocking user authentication of the remaining smart cards except for the selected smart card.

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