KR20090017235A - Smart card - Google Patents

Abstract

A smart card is provided to develop the new smart card service through the information and the various applications. A smart card(100) is mounted on a mobile communications terminal(200) and is electrically connected. The mobile communications terminal comprises a smart card mounting device(210), a smart card controller(220) and a host processor(230). The smart card is mounted in the smart card mounting device and performs data communications with a host processor through the smart card controller. The smart card comprises a card controller(110), a card memory(130), an input-output part(120), an overhead operation part(140), and a local area network part(150). The smart card controller comprises a host interface(226), a card interface(228), a control controller(222) and a controller memory(224).

Description

Smart card {Smart card}

An embodiment discloses a smart card.

Currently, information communication technology and various network technologies including mobile communication terminals are being developed, and in particular, user authentication and payment processing are emerging as important fields in terms of electronic commerce.

Problems such as complicated procedures for user authentication and payment and the stealing of personal information have been the subject of technical interest, and smart cards have been proposed as one of means to solve such problems.

Smart card is used in many fields such as credit card, hospital authentication service card, transportation card, IMT-2000 card.

An example of such a smart card is a SIM (SIM) card. The communication method of a mobile communication terminal currently commercialized in Europe is GSM (Global System for Mobile Communication), which is a time division multiple access method. The card is applied to the GSM system.

The SIM card has a microprocessor, a cryptographic processor and a memory chip, and contains most of the information necessary to operate a mobile communication terminal. Data, including network number, is embedded.

In addition, the SIM card may transmit and receive various data through communication with a mobile communication terminal, and perform user authentication with high security by processing an encryption algorithm of a symmetrical / asymmetric key.

The SIM card is operated by a contactless ISO14416 processor and a contactless ISO14443 processor supporting 13.56MHz RFID.

Therefore, existing smart cards including SIM cards are limited to RFID tag technology, and only one-way transmission of low capacity data such as tag information is possible.

In addition, the smart card is dependent on the 8-pin socket of the ISO7816 standard when mounted on the mobile communication terminal, the antenna pins for RF communication (RF1, RF2), data input / output pins (I / O), clock signal input pins (CLK), 8 pins, such as reset signal input pin (RST), power pin (Vcc), ground pin (GND), SWP pin, are used only for their own purposes, so it is a big limitation to expand the function of smart card by mounting other communication modules. .

For this reason, it is difficult to develop a new application by extending the communication function of the smart card and interworking with the mobile communication terminal.

The embodiment provides a smart card and smart card mounting apparatus that extends communication functions and facilitates development of new applications by introducing a new pin structure away from the conventional 8-pin type structure.

The embodiment provides a smart card that extends communication capabilities to facilitate the download and upgrade of data and software and to develop new applications.

The embodiment provides a smart card capable of providing an optional communication function to a mobile communication terminal.

The smart card according to the embodiment processes the protocol to communicate with the host processor of the mobile communication terminal, the card control unit for executing an application program; A short range communication unit performing data communication with the card control unit or the host processor and forming a short range wireless network with an external communication module; And an input / output unit electrically connected to the host processor including a data input terminal, a data output terminal, and a data input / output terminal of the card control unit.

The smart card mounting apparatus according to the embodiment communicates with a host processor of a mobile communication terminal, performs data communication with a card controller for executing an application program, the card controller or the host processor, and forms a short range wireless network with an external communication module. A mounting groove for detachably coupling a smart card including an input / output unit electrically connected to the host processor, including a short-range communication unit, a data input terminal, a data output terminal, and a data input / output terminal of the card control unit; And a plurality of terminals formed in the mounting groove and electrically connected to the host processor and connected to data input terminals, data output terminals, and data input / output terminals of the card control unit, respectively.

According to the smart card and smart card mounting apparatus according to the embodiment has the following effects.

First, since a variety of communication systems can be implemented inside the smart card as well as the introduction of a new pin structure, it is possible to develop a new application and provide various application services linked to a mobile communication terminal.

Second, according to the embodiment, it is possible to develop a new smart card service through a variety of information and applications, it is possible to develop an application service linked to the mobile communication terminal.

Third, by implementing an additional communication function in the smart card, and differentiates the smart card products according to the communication function to be mounted on the mobile communication terminal, the mobile communication terminal can be provided with an optional communication function. Therefore, the size of the mobile communication terminal can be minimized and the production cost can be reduced.

With reference to the accompanying drawings will be described in detail with respect to the smart card and smart card mounting apparatus according to the embodiment.

The smart card according to the embodiment has been described using an example of a subscriber identity module (SIM) card that performs functions such as authentication, terminal operation, and payment. However, the smart card is not limited thereto. In the case of an IC card interworking with a mobile communication terminal, it can be applied to both.

1 is a block diagram schematically illustrating components of a smart card 100 according to an embodiment.

1, the smart card 100 according to the embodiment is mounted on the terminal, for example, a mobile communication terminal 200, such as a mobile phone and electrically connected, the smart card mounting apparatus 210 to the mobile communication terminal 200 The smart card controller 220 and the host processor 230 are provided.

The smart card 100 is mounted on the smart card mounting apparatus 210 and performs data communication with the host processor 230 through the smart card controller 220.

The smart card 100 includes a card controller 110, a card memory 130, an input / output (I / O) unit 120, an auxiliary operation unit 140, a near field communication unit (NFC), and the like. The smart card controller 220 includes a host interface 226, a card interface 228, a controller controller 222, and a controller memory 224.

The host processor 230 refers to a processor such as a CPU and an MCU of the mobile communication terminal 200 and controls data read / write of the smart card 100.

In addition, the host processor 230 controls the smart card controller 220 and communicates with the smart card 100 to read or write data of the smart card 100.

At this time, communication protocols such as "ISO 7816" and "ISO 14443" are used.

The host interface 226 of the smart card controller 220 communicates with the host processor 230 and is connected to RS-232 to process UART (Universal Asynchronous Receiver / Transmitter) communication.

The card interface 228 is connected in parallel with the smart card 100 to handle the asynchronous half deuplex mode.

The card interface 228 has a structure that is connected in parallel with the smart card 100 through the terminal of the smart card mounting device 210.

The controller controller 222 controls the transmission and reception of data by interworking the host interface 226 and the card interface 228, and transmits a clock signal and a reset signal of the host processor 230 to the smart card 100. The controller memory 224 is a space in which data transmitted and received between the host processor 230 and the smart card 100 is stored.

The smart card mounting apparatus 210 will be described later with reference to FIG. 5.

Next, the smart card 100 according to the embodiment will be described.

The smart card 100 has a form of a plastic card in which a plurality of integrated circuit (IC) chips and passive elements are embedded.

The input / output unit 120 has eight terminals that can be divided into three types as follows.

First, the data input (Rx) terminal, the data output (Tx) terminal, the antenna terminal of the short-range communication unit 150, the second, the data input / output (IO) terminal of the card control unit 110, the reset signal terminal, the clock signal terminal, third, There is a power terminal and a ground terminal connected to the local area communication unit 150 and the card control unit 110.

In particular, the data input terminal and the data output terminal of the short-range communication unit 150 is to use the antenna communication pins (RF1, RF2) of the 8-pin type socket of the ISO7816 standard, the antenna terminal using a SWP (Single Wire Protocol) terminal will be.

The terminal structure of the input / output unit 120 will be described in detail with reference to FIG. 4.

The card control unit 110 processes communication protocols such as "ISO 7816" and "ISO 14443", APDU (Application Protocol Data Unit) commands and response structures, directory structures, security command structures, security processing procedures, payment processing procedures, and the like. do.

The card controller 110 communicates with the host processor 230 and executes an application program on an elementary file (EF) and a dedicated file (DF).

The card controller 110 operates on an operating system such as a chip operating system (COS) and processes application programs such as terminal operation, user authentication, and payment.

The card memory 130 records terminal operation information, password information, authentication information, payment information, user information, phone number, network information, and the like, and includes an operating system for driving the card controller 110.

The card memory 130 may include various memory devices such as a flash memory, an electrically erasable and programmable read only memory (EEPROM), and a random access memory (RAM) according to the type of smart card.

In addition, the card controller 110 reads or writes data in the card memory 130 according to the command of the host processor 230, and transmits the read data to the smart card controller 220.

The auxiliary operation unit 140 shares the functions of the card control unit 110 and may be provided as, for example, a cryptographic processor.

The auxiliary operation unit 140 has an infrastructure for generating a random number of a cipher by a CSN (Chip Serial Number) unique number, records a cipher key in a DF, and encrypts a plurality of cryptographic algorithms such as PKI and 3DES, and a cryptographic dedicated cryptocurrency. (cryto) process the process.

The local area communication unit 150 forms a NFC communication network by processing a peer-to-peer near field communication protocol.

The short range communication unit 150 may communicate with an external communication module, that is, an external NFC device through an NFC communication network, and transmit data to the card control unit 110 or the host processor 230.

The NFC protocol refers to a communication standard that can be used at a close distance of about several tens of centimeters between communication devices, and the frequency of the carrier used by the NFC communication standard is 13.56 of the Industrial Scientific Medical (ISM) band. MHz and the like can be used.

Therefore, the smart card 100 according to the embodiment can be operated as a reader as well as an RFID card function.

The external NFC communication module may be mounted in a device such as a computer or a mobile communication terminal, and the short-range communication unit 150 performs data communication with the external NFC communication module to perform terminal operation information, password information, authentication information, Application applications such as payment information, user information, phone numbers, network information, operating systems, and games may be received.

Therefore, the user can easily upgrade data or programs related to the operation of the mobile communication terminal only by bringing the mobile communication terminal 200 equipped with the smart card 100 according to the embodiment to an external device.

2 is a block diagram schematically illustrating the components of the local area communication unit 150 provided in the smart card 100 according to the embodiment.

Referring to FIG. 2, the short range communication unit 150 includes an antenna 151, a detector 152, a load modulator 153, a receiver 154, a selector 155, an encoder 156, and a modulator ( 157, an electromagnetic wave output section 158, a demodulation section 159, a decoding section 160, and a data processing section 161.

In an embodiment, the antenna 151 is an external antenna provided in the mobile communication terminal 200. When the smart card 100 is mounted in the mobile communication terminal 200, the short-range communication unit 150 is an input / output unit ( It may be connected to the antenna 151 through the antenna terminal of the 120.

The receiver 154 tunes and detects a received signal and transmits the detected signal to the demodulator 159. The demodulator 159 demodulates a signal supplied from the receiver 154 to the decoder 160. To pass.

In addition, the decoder 160 decodes the signal received from the demodulator 159 and transfers the decoded data to the data processor 161.

The data processor 161 interprets the data received from the decoder 160, generates transmission data, and transmits the data to the encoder 156.

The encoder 156 encodes the data transmitted from the data processor 161 and transmits the encoded data to the selector 155, and the selector 155 transmits the transmitted data to the modulator 157 or the load modulator ( 153). At this time, the selection signal is transmitted from the data processor 161. The selective transfer of data to the modulator 157 or the load modulator 153 is for operating the short range communication unit 150 in an active mode or a passive mode.

In the active mode, two communicating devices transmit data while transmitting a unique RF magnetic field. In the passive mode, only one device that initiates communication transmits an RF magnetic field and the other device uses load modulation. This is the way the signal is processed.

The electromagnetic wave output unit 158 adjusts the current flowing through the antenna 151 so that the output signal has a single frequency. The modulator 157 modulates a signal transmitted from the selector 155 on a carrier wave.

The load modulator 153 changes the impedance of the antenna 151 according to the signal supplied from the selector 155. For example, when a signal is received, an RF magnetic field is formed around the antenna 151 and the impedance is changed. Accordingly, the carrier of the received signal may be modulated according to the signal supplied from the selector 155. The detector 152 detects the magnetic flux density of the antenna 151 according to the current of the received signal.

3 is a top view illustrating a form in which components of the smart card 100 are mounted on a substrate, and FIG. 4 is a view illustrating a terminal structure of the smart card 100 according to the embodiment.

3 and 4, an IC chip and a passive element constituting the card control unit 110, the card memory 130, the auxiliary operation unit 140, and the short-range communication unit 150 are mounted on a substrate, and an input / output is provided on the bottom of the substrate. The unit 120 is formed. The terminal of the input / output unit 120 may be connected to the IC chip mounted on the upper surface side of the substrate through the via hole.

Referring to FIG. 4, the smart card 100 according to the embodiment includes a total of eight terminals 120a to 120h. Hereinafter, the eight terminals 120a to 120h are referred to as first terminals 120a to 8h 120h in order from the sin side to the bottom right.

The first terminal 120a receives power from the host processor 230 through the smart card controller 220 and transfers the power to the card control unit 110 and the local area communication unit 150.

The second terminal 120b is a terminal to which a reset signal for driving the card control unit 110 is input, and the third terminal 120c is a terminal to which a clock signal is input.

The fourth terminal 120d is a terminal for transmitting the transmission data of the local area communication unit 150 to the host processor 230, and the eighth terminal 120h hosts the reception data of the neighborhood communication unit 150. The terminal receives an input from the processor 230.

The fifth terminal 120e is a ground terminal connected to the ground pins of the card control unit 110 and the short-range communication unit 150, and the sixth terminal 120f is an antenna terminal.

The mobile communication terminal 200 has a built-in antenna 151 for the local area communication unit 150, the antenna 151 is provided as a single-ended loop antenna.

Smart card mounting device 210 has a terminal corresponding to the terminal of the smart card 100, one side of the antenna 151 is connected to the terminal of the mounting device 210 corresponding to the sixth terminal (120f) The other side of the antenna 151 is connected to a terminal of the mounting apparatus 210 corresponding to the fifth terminal 120e.

Therefore, when the smart card 100 is inserted into the mounting apparatus 210, the short-range communication unit 150 may be connected to the antenna 151 through the sixth terminal 120f.

Since the smart card 100 according to the embodiment may be connected to an external antenna through a terminal without having a built-in antenna, its size may be greatly reduced.

The seventh terminal 120g is a data input / output terminal of the card control unit 110, and unlike the local area communication unit 150, the data amount is small and has a single stack structure, so that the seventh terminal 120g can communicate with the host processor 230 through one terminal.

5 is a perspective view illustrating a structure of a smart card mounting apparatus 210 to which the smart card 100 is mounted according to an embodiment.

Referring to FIG. 5, the smart card 100 according to the embodiment is detached / mounted on the rear portion of the main body of the mobile communication terminal 200 into which a battery pack (not shown) is inserted. It is formed in the back part.

The mounting groove 212 of the smart card mounting device 210 provides a space into which the smart card 100 is inserted, and the "a" shaped protrusions 211 formed at the left and right ends of the mounting groove 212 are smart. It guides and fixes the card 100.

Therefore, the smart card 100 may slide along the protrusion 211 and may be seated and fixed in the mounting groove 212.

The printed circuit board on which the smart card controller 220 is implemented is located in the main body region where the mounting groove 212 is formed, and the bottom surface of the mounting groove 212 is electrically connected to the smart card controller 220. Terminals are formed.

The terminal is connected to a terminal of the mounted smart card 100 to function to energize the smart card 100 and the smart card controller 220.

Therefore, the terminal of the smart card mounting apparatus 210 is formed at a position corresponding to the terminal of the smart card 100, the type and structure thereof are as shown in the following table.

Smart Card Mounting Device (210) Smart card (100) Terminal type 5th terminal 210e First terminal 120a Power terminals 6th terminal (210f) Second terminal 120b Reset signal terminal 7th terminal (210g) Third terminal 120c Clock signal terminal 8th terminal (210h) 4th terminal (120d) Data output terminal of local area communication unit First terminal 210a 5th terminal 120e Ground terminal Second terminal 210b 6th terminal (120f) Antenna terminals Third terminal 210c 7th terminal (120g) Data input / output terminal of card control unit 4th terminal 210d 8th terminal (120h) Data input terminal of local area communication unit

The present invention has been described above with reference to the preferred embodiments, which are merely examples and are not intended to limit the present invention, and those skilled in the art to which the present invention pertains do not depart from the essential characteristics of the present invention. It will be appreciated that various modifications and applications are not possible that are not illustrated above. For example, each component specifically shown in the embodiment of the present invention can be modified. And differences relating to such modifications and applications will have to be construed as being included in the scope of the invention defined in the appended claims.

1 is a block diagram schematically showing the components of a smart card according to an embodiment;

Figure 2 is a block diagram schematically showing the components of the local area communication unit provided in the smart card according to the embodiment.

3 is a top view illustrating a form in which the components of the smart card according to the embodiment are mounted on a substrate.

4 is a diagram illustrating a terminal structure of a smart card according to the embodiment;

5 is a perspective view showing the structure of a smart card mounting apparatus is mounted smart card according to the embodiment.

Claims (11)

A card controller which processes a protocol to communicate with a host processor of a mobile communication terminal and executes an application program; A short range communication unit performing data communication with the card control unit or the host processor and forming a short range wireless network with an external communication module; And And a data input terminal, a data output terminal, and a data input / output terminal of the card control unit, the input / output unit electrically connected to the host processor. The method of claim 1, A card memory in which smart card information is recorded; The card control unit is a smart card for controlling data input and output of the card memory. The method of claim 2, wherein the card memory Smart card including at least one of the card operating system, terminal operation information, password information, authentication information, payment information, user information, network information. The method of claim 1 wherein the protocol is Smart cards that include at least one of the "ISO 7816" standard and the "ISO 14443" standard. According to claim 1, wherein the card control unit Smart cards that handle applications associated with one or more of security processing, payment processing, terminal operations, and authentication procedures. The method of claim 1, Smart card comprising a secondary computing unit for sharing the function of the card control unit, performing a password processing function. The method of claim 1, wherein the input and output unit And a power terminal and a ground terminal connected to the short range communication unit and a card control unit. A reset signal terminal and a clock signal terminal connected to the card control unit; Smart card comprising an antenna terminal connected to the short-range communication unit. The method of claim 7, wherein the short-range communication unit One side is connected to the antenna terminal, A smart card comprising a single ended loop antenna connected to the ground terminal at the other end. In the smart card mounting apparatus formed in the mobile communication terminal, A local area communication unit that communicates with a host processor of the mobile communication terminal, executes an application program, performs data communication with the card control unit or the host processor, and forms a local area wireless network with an external communication module; A mounting groove having a data input terminal, a data output terminal, and a data input / output terminal of the card control unit to detachably couple a smart card including an input / output unit electrically connected to the host processor; And And a plurality of terminals formed in the mounting groove and electrically connected to the host processor and connected to data input terminals, data output terminals, and data input / output terminals of the card control unit. The method of claim 9, The input / output unit includes a power terminal connected to the local area communication unit and a card control unit, a ground terminal, a reset signal terminal connected to the card control unit, a clock signal terminal, and an antenna terminal connected to the local area communication unit. , The terminal formed in the mounting groove is a smart card mounting apparatus including a plurality of terminals respectively connected to the power terminal, ground terminal, reset signal terminal, clock signal terminal, antenna terminal. The method of claim 9, A smart card mounting apparatus comprising a protrusion for guiding the smart card to be inserted into the mounting groove and fixing the inserted smart card.

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