KR20110125758A - Data storing device for near field communication - Google Patents

Data storing device for near field communication Download PDF

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Publication number
KR20110125758A
KR20110125758A KR1020100045295A KR20100045295A KR20110125758A KR 20110125758 A KR20110125758 A KR 20110125758A KR 1020100045295 A KR1020100045295 A KR 1020100045295A KR 20100045295 A KR20100045295 A KR 20100045295A KR 20110125758 A KR20110125758 A KR 20110125758A
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KR
South Korea
Prior art keywords
nfc
contact
data storage
interface
memory card
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Application number
KR1020100045295A
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Korean (ko)
Inventor
김동영
Original Assignee
주식회사 에스엠이네트웍스
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Priority to KR1020100045295A priority Critical patent/KR20110125758A/en
Publication of KR20110125758A publication Critical patent/KR20110125758A/en

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    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0723Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10297Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves arrangements for handling protocols designed for non-contact record carriers such as RFIDs NFCs, e.g. ISO/IEC 14443 and 18092

Abstract

PURPOSE: A data storing device for supporting local wireless communication is provided to obtain a local wireless communication function such as an NFC to a specific electronic device. CONSTITUTION: An SD(Secure Digital) card interface(210) performs data input/output according to a certain SD card protocol. An NFC(Near Field Communication) interface(220) performs local wireless communication according to an RF communication protocol according to the signal of the SD card interface. A storing unit(230) stores data inputted through the SD card interface.

Description

DATA STORING DEVICE FOR NEAR FIELD COMMUNICATION}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data storage device in the form of a memory card, wherein the data storage device provides a short range wireless communication function to a specific electronic device while being inserted into a slot of the specific electronic device.

Near Field Communication (NFC) technology is a kind of contactless short-range wireless communication technology that can transmit data at low power in a short distance by using RFID technology using a frequency of 13.56 MHz band, proposed by the NFC Forum. Using the NFC protocol. With NFC communication technology, when two or more terminals are brought close together without the user's artificial manipulation, various contents data as well as authentication data can be exchanged.

On the other hand, the third generation mobile communication terminal must be equipped with a USIM card to be authenticated, and payment through NFC and NFC technology is possible. Since data can be transmitted and received, the USIM card and the NFC communication apparatus must exist in the mobile communication terminal for authentication and data transmission and reception using the mobile communication terminal.

However, most older mobile communication terminals are not able to attach such USIM cards, and even in the latest mobile communication terminals, the USIM card can be attached but the NFC communication device is not built in many times. In order to make payment through authentication data and to transmit / receive various contents data in the USIM card with other terminals, it is possible to attach a USIM card and purchase a new mobile communication terminal with a built-in NFC communication device.

In order to solve the problems of the conventional mobile communication terminal, an embodiment in which the NFC communication apparatus 21, the smart card 22, and the antenna 23 are embedded in the battery pack 20 of the mobile communication terminal. 6 uses an integrated battery pack 20 having the same configuration.

However, in the prior art as shown in FIG. 6, since the integrated battery bag 20 needs to be purchased and installed instead of the existing battery pack, it is difficult to spread because of the high price of the battery pack. There is a problem of manufacturing an integrated battery pack of various shapes used in each model. In addition, since there is no method for the mobile communication terminal to control the NFC communication apparatus 21 located in the battery pack, the integrated battery pack 20 only performs the function of a passive RF tag. This means that the illustrated conventional technology cannot fully utilize the NFC native functions.

An object of the present invention is to provide a data storage device that provides a short range wireless communication function such as NFC to a specific electronic device while being inserted into a slot of a specific electronic device.

A data storage device according to an aspect of the present invention includes a memory card interface for performing data input and output according to a predetermined memory card protocol; An NFC interface for performing short range wireless communication according to a predetermined RF communication protocol according to a signal applied to the memory card interface; And a storage unit which stores data input through the memory card interface.

Herein, the NFC interface selects one of a passive mode (Card Emulation mode), an active mode (Reader / Writer mode), and a peer-to-peer mode according to a signal applied to the memory card interface. And, in the selected mode, it is possible to perform short-range wireless communication according to the NFC protocol.

The data storage device may further include a security module that can be accessed through a predetermined authentication process through the NFC interface.

Here, the data storage device may further comprise a protocol conversion unit for converting a signal applied to the memory card interface into an NFC control signal and transferring it to the NFC interface.

Here, the protocol conversion unit, a control file storage unit for storing a file input through the memory card interface; And an NFC control signal generator for analyzing the file stored in the control file storage to generate the NFC control signal.

The control file storage unit may be a partial region of the storage unit.

The protocol conversion unit may further include an NFC response unit for storing a response to performing an NFC operation in the control file storage unit.

Here, the data storage device may have a form of conductor strips arranged in a line, and may further include a memory card slot contact portion connecting an external memory card slot to the memory card interface.

Here, the data storage device has a form of a pair of conductor strips, and further comprises an RF antenna contact portion connecting the external RF antenna and the NFC interface, or has a form of a conductor strip, the external RF Transmitting and receiving a signal, and may further comprise an RF strip antenna connected to the NFC interface.

The data storage device may include a contact interface for performing data communication according to a predetermined contact IC protocol; And a contact pad having six conductor strip shapes and connecting an external contact IC slot to the contact interface.

The contact interface may receive identification information or an encryption key of the data storage device and record the identification information or an encryption key in the security module or the storage unit.

According to another aspect of the present invention, a data storage device includes a case having a rectangular plate-like shape; A memory card slot contact portion having a form of conductor strips arranged in a line near one side of one surface of the case and being in contact with an external memory card slot; A contact pad having a shape of six conductor strips formed on one surface of the case and capable of contacting an external contact IC slot; An RF antenna contact having a form of a pair of conductor strips formed on one side or the other side of the case and connected to an external RF antenna; And an internal circuit block mounted in the case and storing information obtained by processing signals input to the memory card slot contact, the contact pad, and the RF antenna contact.

The data storage device may further include a conversion case having an external shape of the USIM and having a groove into which the case may be inserted.

According to another aspect of the present invention, a data storage device includes a case having a rectangular plate-like shape; A memory card slot contact portion having a form of conductor strips arranged in a line near one side of one surface of the case and being in contact with an external memory card slot; A contact pad having a shape of six conductor strips formed on one surface of the case and capable of contacting an external contact IC slot; An RF strip antenna positioned at an opposite side of the memory card slot contact portion of the case to transmit and receive an RF signal for NFC wireless communication; And an internal circuit block mounted in the case and storing information obtained by processing signals input to the memory card slot contact, the contact pad, and the RF strip antenna.

The data storage device may further include a conversion case having an external shape of the USIM and having a groove into which the case may be inserted.

The data storage device of the present invention according to the above configuration has an advantage of easily providing a short range wireless communication function to the specific electronic device by inserting it into a memory card slot or the like of a specific electronic device.

1 is a block diagram illustrating a detailed configuration of a data storage device that may be implemented as an SD card type according to an embodiment of the present invention.
FIG. 2 is a conceptual diagram illustrating an example of a detailed configuration of the protocol converter of FIG. 1 and a software hierarchy of an external device corresponding thereto; FIG.
3 is a plan view showing the external appearance of the data storage device according to an embodiment of the present invention;
4 is a conceptual diagram illustrating a shape in which the data storage device of FIG. 3 is coupled to a conversion case so as to be used as a USIM card.
5A and 5B are a plan view and a rear view of an external view of a data storage device according to another embodiment of the present invention.
Figure 6 is a block diagram showing a battery pack for giving the NFC function to the mobile phone according to the prior art.

1 illustrates a detailed configuration of a data storage device that may be implemented as an SD card type according to an embodiment of the present invention.

The illustrated data storage device 100 includes an SD card interface 210 as a memory card interface for inputting or outputting data in accordance with an SD card protocol; NFC interface 220 for performing NFC communication as short-range wireless communication according to the signal applied to the SD card interface; A storage unit 230 storing data input through the SD card interface 210; And a security module 240 accessible through a predetermined authentication process through the NFC interface 220.

The SD card interface 210 is configured to input / output data corresponding to an SD card protocol, which is a communication control signal according to a standard standard for a secure digital (SD) card, and is implemented as a single hardware such as a dedicated IC. May be implemented in hardware and / or software modules. In the drawing, the SD card interface 210 may perform an operation of recording or reading data in the storage unit 230 according to the SD card protocol.

The data storage device 100 has a form of conductor strips arranged in a line, and connects the SD card slot to the SD card interface 210 as an external memory card slot. 120 may be further provided. The SD card slot contact unit 120 may follow a general SD card standard, a mini SD card standard, or a micro SD card standard.

The storage unit 230 is a component for storing information desired by a user for a long time, and may be implemented as NAND, EEPROM, or the like having a relatively large capacity and a nonvolatile storage memory. The storage unit 230 is intended to provide an inherent function of a Secure Digital (SD) card as a mass portable storage device, and may be a storage area accessible by the SD card interface 210. In another implementation, the storage unit 230 may be accessed by the NFC interface 220 as well as the SD card interface 210.

The security module 240 may be implemented as an independent single chip (for example, a smart chip) that performs a prescribed encryption algorithm for security. In the case of a security module implemented with a high-performance smart chip used in a Mega SIM, etc., a large amount of nonvolatile memory may be provided therein.

The security module 240 may store an identification ID for identifying the data storage device and / or an encryption key for the encryption algorithm when issuing the data storage device 100 of the present embodiment. Alternatively, the security module 240 implemented as a single chip may use the identification number of the single chip as the identification ID.

The security module 240 may perform the encryption algorithm in response to the NFC protocol. To this end, the security module 240 may receive a command for security processing from the NFC interface 220.

The NFC interface 220 is a configuration for inputting / outputting data corresponding to the NFC protocol, which is a communication control signal according to a standard standard for NFC communication, and implemented as a single hardware such as a dedicated IC, or hardware and / or software. It can be implemented as a module.

At the present time, the key to implementing NFC devices is a dedicated IC called an NFC chip. The NFC chip, sometimes called the NFC controller or NFC router, is being developed and marketed by several companies. NFC interface 220 of the present embodiment may be provided with the NFC chip.

In order for the NFC interface 220 to perform NFC communication, the NFC interface 220 needs to be connected to an RF antenna 140 for transmitting and receiving an RF signal. The RF antenna 140 may be provided in the data storage device 100 in the form of a loop antenna or an RF microstrip antenna, or may be provided in an external electronic device in which the data storage device 100 is installed. In the latter case, the data storage device 100 may have a form of a pair of conductor strips, and may further include an RF antenna contact portion connecting the RF antenna of the external electronic device to the NFC interface.

In NFC, when two devices to communicate with each other enter an operating volume, the intention to communicate with each other is assumed, and a communication procedure is started. This concept maximizes user convenience.

NFC devices usually operate in three modes. One is a reader / writer mode in which the device acts as a terminal, the other is a peer-to-peer mode in which the device exchanges data with each other, and a passive device in which the device behaves like a contactless card. Mode (Card Emulation mode).

Active mode allows NFC devices to read cards, tags, and smart posters, and P2P mode to send and receive large amounts of data such as business cards and digital content with other NFC devices. Finally, it is possible to make a payment by touching a card terminal with a NFC-enabled mobile phone using the manual mode.

The NFC interface 220 may select one of a passive mode, an active mode, and a P2P mode according to a signal applied through the memory card interface, and perform short-range wireless communication in the selected mode.

The NFC interface 220 of the data storage device 100 of the present embodiment, in response to a command according to the SD protocol applied to the SD card interface 210, performs NFC wireless communication as short-range wireless communication according to the NFC standard. can do. Accordingly, the user may control the operation of the NFC interface 220 by using an external device (eg, a mobile phone or a PC) connected to the data storage device through the SD card interface 210. That is, the user may operate the external device to control the NFC function of the data storage device 100. This gives the user the same feeling as performing the NFC function of the external device.

To this end, the illustrated data storage device 100 may further include a protocol converter 260 for converting and relaying a control signal between the SD card interface 210 and the NFC interface 220. Alternatively, the NFC interface 220 or the SD card interface 210 may be implemented to have the function of the protocol converter 260.

Meanwhile, the data storage device 100 illustrated in FIG. 1 may further include a contact interface 270 that performs data communication according to a contact protocol according to a standard (eg, ISO 7816) for a contact IC. have. The contact interface 270 may access the security module 240 through the contact interface 270, and / or access the storage 230 through the contact interface 270. It can be configured to do so. Alternatively, the data storage device 100 may further include other hardware (eg, an IC) that performs security and / or storage functions for the contact interface 270. In addition, the data storage device 100 may further include a contact pad 160 connecting the contact IC slot of the external device to the contact interface 270. For example, the contact pad 160 may have the form of six conductor strips.

The contact interface 270 may perform an authentication process or input / output necessary data with an external contact IC card terminal using a contact protocol. For example, the electronic money may be stored in the security module 240, and the like may be contacted with an external contact IC card payment terminal using the contact interface 270 to perform a payment with the electronic money.

However, the current situation of dissemination of a terminal for a contact IC card is not good, so the data storage device 100 of this embodiment is unlikely to be used as a contact IC card. However, due to the characteristics of a more secure contact IC card, the issuer for issuing a smart card is often issued using a contact protocol for the contact IC card. Therefore, the contact interface 270 is more useful when used in the issuing process of the data storage device 100 itself. Upon issuance, the contact interface 270 receives the identification information (eg, identification ID) and / or encryption key of the data storage device 100 itself, and receives the security module 240 and / or the storage 230. ) Can be recorded. A detailed issuance process using the contact interface 270 will be described later.

2 illustrates an example of a detailed configuration of the protocol converter 260 and a software hierarchy of the external device 1000 corresponding thereto. Hereinafter, an example of a protocol conversion operation of the protocol conversion unit 260 will be described with reference to FIG. 2.

The SD protocol is for recording data in a relatively large memory, and the SD card interface 210 has a storage space (address area) for storing data input according to the SD protocol. The storage space may be an address area for the internal memory and / or the storage 230 of FIG. 1.

In this embodiment, a specific area of the storage space allocated to the SD card interface 210 is used to record the NFC command for the NFC interface 220. To this end, the protocol conversion unit 260 may include a control file storage unit 262 for storing information input through the SD card interface 210 as the specific area; And an NFC control signal generator 264 for generating a control signal for the NFC interface 220 by interpreting the information stored in the control file storage 262.

In the illustrated embodiment, the control file storage unit 262 is a partial region of the storage unit 230, but for the convenience of explanation and understanding, the control file storage unit 262 applies a classification according to its function, and thus the detailed configuration of the protocol conversion unit 260 is provided. The elements are expressed separately.

In another implementation, the control file storage unit 262 may be a memory (eg, a register) in hardware constituting the protocol conversion unit 260, or the SD card interface 210 and / or an NFC interface ( 220 may be an internal memory (eg, a register).

Meanwhile, in another implementation, the NFC interface 220 may perform the function of the NFC control signal generator 264, and the NFC control signal generator 264 may be omitted. The protocol conversion unit 260 may further include an NFC response unit 266 for storing a response to performing an NFC operation in the control file storage unit 262.

The external device 1000 (for example, mobile phone or PC) connected to the data storage device 100 of the present embodiment may, when a user commands the NFC function of the data storage device, includes a file including the corresponding NFC command ( NFC command file) and writes the generated NFC command file to the control file storage unit 262 using the SD protocol. To this end, the external device 1000 may be provided with software (for example, a driver) to perform the function.

The NFC control signal generator 264 may periodically search the control file storage unit 262 to check whether a file including the NFC control signal exists. The NFC control signal generation unit 264 opens a file recorded in the control file storage unit 262, confirms a command from the external device 1000, and converts the file into a control signal according to the NFC protocol. The converted control signal may be output to the NFC interface 220.

The above description will be specifically described as an operation when the data storage device according to the spirit of the present invention is mounted in the micro SD card slot of the mobile phone as the external device 1000. The mobile phone is provided with an application 1020 for controlling a data storage device according to the spirit of the present invention, and an SD driver 1040 is installed as software for accessing a general SD card connected to the micro SD slot. .

A user of the mobile phone wants to transmit an image stored in another mobile phone using the PtoP function of NFC. That is, the application 1020 may perform a PtoP image transmission function. When a user executes the application 1020 for NFC image transmission of the mobile phone, the application 1020 generates a file (NFC command file) containing a command to operate in a PtoP mode, and uses an SD protocol. The generated NFC command file is stored in the control file storage unit 262 in the data storage device 100.

Next, when the NFC control signal generation unit 264 in the data storage device 100 confirms that the file is recorded in the control file storage unit 262, the NFC control signal generation unit 264 reads and opens the recorded NFC command file. . The NFC control signal generator 264 generates an NFC control signal for a command to operate in the PtoP mode described in the NFC command file and outputs the NFC control signal to the NFC interface 220 in the data storage device 100.

The NFC interface 220 receiving the control signal forms an NFC wireless communication channel with another external mobile phone in a PtoP mode by using the RF antenna 140 illustrated in FIG. 1, and performs an NFC operation on the command. Create a report of the content, and delivers to the NFC response unit (266). The NFC response unit 266 generates a file (NFC response file) including the report contents and records the generated file in the control file storage 262.

The application 1020 periodically stores whether the NFC response file is stored in the control file storage unit 262 after storing the NFC command file in the control file storage unit 262 in the data storage device 100. Can be checked If the application 1020, the NFC response file is stored in the control file storage unit 262, it may be read to obtain the report content described therein.

According to the above-described process, the application 1020 having obtained a report on the establishment of an NFC wireless communication channel with the other mobile phone selects an image to be transmitted to the other mobile phone according to the user's manipulation of the mobile phone. And instructs information and a transmission command about the selected image to be transmitted in the form of an NFC command file in a similar manner to that described above (that is, the NFC command file is stored in the control file storage unit 262), and a response thereto ( NFC response file).

Here, according to the storage location of the image to be transmitted, the form of sending information on the image to be transmitted may be one of the following three types.

First, when the image to be transmitted is stored in an area directly accessible by the NFC interface 220, the information about the image to be transmitted may be area information (eg, an address of an image storage location) in which the image is stored. have. Here, the area directly accessible by the NFC interface 220 may be an internal storage area of the security module 240 of FIG. 1 that the NFC interface 220 may access, or the NFC interface 220 may be connected to the area of FIG. 1. In an implementation of a structure in which the storage unit 230 is directly accessible, the storage unit 230 may be a partial storage area of the storage unit 230.

Second, when the image to be transmitted is stored in an area where the NFC interface 220 cannot directly access, the information about the image to be transmitted may be all or part of image data to be transmitted. In this case, the image to be transmitted itself may be divided (or at once) transmitted through the control file storage unit 262. That is, after obtaining the image data to be transmitted, the application 1020 may insert all or a portion of the image data to be transmitted into the NFC command file and store it in the control file storage unit 262.

In the above descriptions, the area in which the NFC command file is stored in the control file storage unit 262 and the area in which the NFC response file is recorded may be the same or different according to implementation. In addition, in order to secure a storage area of the control file storage unit 262, a file (NFC command file and / or NFC response file) recorded in the control file storage unit 262 is the NFC control signal generation unit 264. ) May be deleted after the application 1020 confirms.

3 illustrates the appearance of an embodiment of a data storage device according to the spirit of the present invention.

The illustrated data storage device 100-1 includes a case 101 having a similar shape to a rectangular plate; The micro SD card slot contact portion 120 has a shape of conductor strips ss1 to ss8 arranged in a line near one side of one surface of the case 101 and is a memory card slot contact portion that may contact an external memory card slot. ; A contact pad having a shape of six conductor strips (cs1 to cs 6) formed on one surface of the case 101 and capable of contacting an external contact IC slot; An RF antenna contact having a form of a pair of conductor strips (as1, as2) formed on one surface or the other surface of the case 101 and connected to an external RF antenna; And an internal circuit block 200 mounted inside the case 101 and storing information obtained by processing signals input to the micro SD card slot contact 120, a contact pad, and an RF antenna contact. Can be.

Here, the internal circuit block 200 may include components of the internal circuit block 200 shown in FIG. 1.

The case 101 may have a shape of a general micro SD card. Currently widely used micro SD cards have a form in which zigzag bends are formed on one of the long sides having a rectangular shape. Therefore, the case 101 shown also has the same form.

The micro SD card slot contact portion 120 also has the same shape as a micro SD card of a general standard, which is advantageous to ensure compatibility as a micro SD card.

The illustrated micro SD card slot contact portion 120 has a form of conductor strips ss1 to ss8 arranged in a line, and connects a micro SD card slot of an external device with a memory card interface in the internal circuit block 200. It is a physical structure.

The illustrated RF antenna contact has a form of a pair of conductor strips as1 and as2, and is a physical structure that connects an external RF antenna to an NFC interface in the internal circuit block 200.

The illustrated contact pad has the form of six conductor strips cs1 to cs6, and is a physical structure that connects an external contact IC slot with a contact IC interface in the internal circuit block 200.

The contact pad of ISO 7816 standard consists of eight terminals, including two spare terminals. However, although the contact pad of the ISO 7816 standard has been proposed a long time ago, it is not easy to find a case where it is actually used. Compared to contactless smart cards, the inconvenience of contact is neglected by the average consumer. The only field in which the contact pad of the ISO 7816 standard is relatively widely used is the USIM of a mobile phone.

First, the USIM will be briefly described. A subscriber identify module (SIM) card is a form of use of a smart card defined as above, and is a smart card for authentication of a terminal user mounted on a mobile communication terminal, and provides various services such as billing and security functions. Can provide. Here, the subscriber identity module (SIM) card is started in Europe adopting the Global System for Mobile communication (GSM) scheme, while the code division multiple access (CDMA) camp proposes a functionally identical smart card. The term UIM (user identify module) is used to distinguish it from the SIM. In addition, USIM (user subscriber identify)

module) is a more extended term that accepts both SIM and UIM. As ITU-2000's IMT-2000 radio access standard is approved in synchronous and asynchronous manner, it is now possible to implement roaming using different radio access standards. As a practical method, the USIM standard for user authentication is actively being promoted. In this specification, SIM uses USIM, a term that can collectively refer to UIM.

The data storage device 100-1 of this embodiment corresponds to the position of six contacts in use of the contact pad of the ISO 7816 standard so that it can be connected to the contact card slot for the contact pad of the ISO 7816 standard. The contact pads in the form of six conductor strips cs1 to cs6 may be provided. Two conductor strips may also be formed on the two contact portions which are used as spares instead of the contact pads of the ISO 7816 standard. However, it is advantageous to omit them as shown in the drawings in terms of manufacturing cost.

The contact pad provided in the data storage device 100-1 of this embodiment may have a purpose for use as a contact smart card, and may also have a purpose for use as a USIM card which is widely used at present. have. However, since the micro SD card and the USIM card differ in appearance, they can use a kind of adapter case without being used as it is.

FIG. 4 illustrates a shape in which the data storage device 100-1 of FIG. 3 is coupled to the conversion case 900 so that the data storage device 100-1 may be used as a USIM card. As illustrated, when the data storage device 100-1 of the present embodiment is coupled to the conversion case 900, it has a form of a USIM. Here, the conversion case 900 has an external shape of the USIM, and has a groove in which the case 101 of the data storage device 100-1 may be inserted.

Compared to the six conductor strips cs1 to cs6 constituting the contact pad of the data storage device and the contact pad 2100 of the ISO 7816 standard attached to the general USIM 2000, the ISO 7816 standard The positions of the six contacts cp1 to cp6 except for the two reserved contacts cp7 and cp8 reserved for the contact pad 2100 of It can be seen that it corresponds to the position. As a result, when the data storage device 100-1 is inserted into the USIM slot of an external device (eg, a mobile phone) while being coupled to the conversion case 900, the six conductor strips cs1 to cs6. The contact pad made of) can be used to perform contact data communication according to the ISO 7816 standard.

The data storage device 100-1 coupled to the conversion case 900 of the type shown in FIG. 4 is not inserted into the USIM slot of the mobile phone, but rather is issued by the data storage device 100-1 itself. Can be used in Here, "issuing" means "issuing a certificate" in the dictionary meaning, but "issuing" a smart card means issuing a card to a user and granting permission to use the card. Due to the nature of the smart card includes performing a security procedure for granting the right to use. More specifically, in the electronic / computer processing process, 'issuance' means performing a security procedure for granting the right use right. For example, the 'security procedure' may include each smart card (data storage device of the present embodiment). In addition, the method may include assigning identification information (eg, identification ID) to a kind of smart card) and / or storing a security key required for authentication of each data storage device.

The issuer of the USIM card according to the prior art, which has been widely spread, performs an issuing task by using a contact card method of the ISO 7816 standard, rather than an SD card method or an NFC method. When using the contact pads (cs1 ~ cs6) of the data storage device 100-1 coupled to the conversion case 900 as shown, using the issuer of the USIM card according to the prior art, the idea of the present invention The data storage device 100-1 may be issued.

That is, when the data storage device 100-1 shown in FIGS. 3 and 4 is inserted into a micro SD card slot of an electronic device (eg, a mobile phone) without an NFC interface, the data storage device 100-1 may support the NFC function. While effective, there is an advantage that can be issued at a low cost by using the issuer of the USIM card according to the prior art.

For example, the data storage device 100-1 shown in FIGS. 3 and 4 may be used to provide an NFC function to the mobile phone by being inserted into a micro SD card slot of the mobile phone. In this case, the mobile phone does not need to implement hardware for the NFC function, but the application 1020 for the NFC function shown in FIG. 2 must be installed, and the data storage device 100-1 is a micro SD card. When inserted into the slot, an RF loop antenna having a physical structure in contact with the antenna contact of the data storage device 100-1, which is composed of a pair of conductor strips as1 and as2, must be provided.

Since the application 1020 is easy to install as an application program of the mobile phone, and the loop antenna has a low implementation cost in the form of a battery pack, the data storage device 100-1 of the present embodiment can be used as a mobile device. The cost of giving NFC functionality to the phone can be reduced.

However, the data storage device according to the embodiment shown in FIG. 3 requires a mobile phone equipped with a loop antenna for RF communication, which acts as a limitation in granting an NFC function to a mobile phone without a conventional NFC function.

The data storage device 100-2 according to another embodiment illustrated in FIGS. 5A and 5B may provide an NFC function to all mobile phones in which a micro SD slot exists and in which additional applications can be installed.

The illustrated data storage device 100-2 includes a case 102 having a similar shape to a rectangular plate; The micro SD card slot contact portion 120 has a shape of conductor strips ss1 to ss8 arranged in a line near one side of one surface of the case 102, and is a memory card slot contact portion that may contact an external memory card slot. ; A contact pad having a shape of six conductor strips (cs1 to cs 6) formed on one surface of the case 102 and capable of contacting an external contact IC slot; An RF strip antenna (SA) located on the opposite side of the micro SD card slot contact portion 120 of the case 102 and serving as a kind of micro strip antenna for transmitting and receiving RF signals for NFC wireless communication; And an internal circuit block 200 mounted inside the case 102 to store information obtained by processing signals input to the micro SD card slot contact unit 120, a contact pad, and an RF strip antenna SA. It may include.

The data storage device 100-2 of FIG. 5 is also coupled to the conversion case 900 as shown in FIG. 4, and is a contact type IC card slot (eg, mobile phone, USIM card issuer) of an external device. USIM card slot) can be used.

Components other than the RF strip antenna SA are similar to those of FIG. 3, and thus detailed descriptions thereof will be omitted.

A general micro SD card is inserted into a micro SD card slot of an external device by a user pushing the opposite side of the micro SD card slot contact. As a result, the opposite side of the micro SD card slot contact portion is often exposed from the micro SD card slot of the external device. In this embodiment, the RF strip antenna SA is formed on the opposite side of the micro SD card slot contact, thereby improving transmission and reception sensitivity of the RF strip antenna SA.

The RF strip antenna SA may be manufactured in a shape having high transmission and reception sensitivity in a frequency band (for example, 13.56 MHz) for NFC communication.

It should be noted that the above embodiment is for the purpose of illustration and not for the purpose of limitation. In addition, those skilled in the art will understand that various embodiments are possible within the scope of the technical idea of the present invention.

100: data storage device 120: SD card slot contact
140: RF antenna 160: contact pad
200: internal circuit block 210: SD card interface
220: NFC interface 230: storage unit
240: security module 260: protocol conversion unit

Claims (15)

  1. A memory card interface for performing data input and output according to a predetermined memory card protocol;
    An NFC interface for performing short range wireless communication according to a predetermined RF communication protocol according to a signal applied to the memory card interface; And
    A storage unit for storing data input through the memory card interface
    Data storage device comprising a.
  2. The method of claim 1,
    The NFC interface,
    And selecting one of a passive mode, an active mode, and a PtoP mode according to a signal applied to the memory card interface, and performing short-range wireless communication according to NFC protocol in the selected mode.
  3. The method of claim 1,
    Security module that can be accessed through a predetermined authentication process through the NFC interface
    Data storage device further comprising.
  4. The method of claim 1,
    Protocol conversion unit for converting the signal applied to the memory card interface to the NFC control signal to transfer to the NFC interface
    Data storage device further comprising.
  5. The method of claim 4, wherein
    The protocol conversion unit,
    A control file storage unit for storing a file input through the memory card interface; And
    NFC control signal generation unit for generating the NFC control signal by analyzing the file stored in the control file storage unit
    Data storage device comprising a.
  6. The method of claim 5, wherein
    The control file storage unit,
    The data storage device is a partial area of the storage unit.
  7. The method of claim 5, wherein
    The protocol conversion unit,
    NFC response unit for storing a response to the NFC operation to the control file storage unit
    Data storage device further comprising.
  8. The method of claim 1,
    Memory card slot contacts that have the form of conductor strips arranged in a line and connect an external memory card slot with the memory card interface
    Data storage device further comprising.
  9. The method of claim 1,
    RF antenna contacts having a pair of conductor strips and connecting an external RF antenna to the NFC interface
    Data storage device further comprising.
  10. The method of claim 1,
    An RF strip antenna having a conductor strip shape, transmitting and receiving an external RF signal, and connected to the NFC interface.
    Data storage device further comprising.
  11. The method of claim 3, wherein
    A contact interface for performing data communication in accordance with a predetermined contact IC protocol; And
    Contact pads in the form of six conductor strips that connect an external contact IC slot to the contact interface
    Data storage device further comprising.
  12. The method of claim 11,
    The contact interface,
    And receiving identification information or an encryption key of the data storage device and writing the identification information or the encryption key to the security module or the storage unit.
  13. Rectangular plate-like shaped case;
    A memory card slot contact portion having a form of conductor strips arranged in a line near one side of one surface of the case and being in contact with an external memory card slot;
    A contact pad having a shape of six conductor strips formed on one surface of the case and capable of contacting an external contact IC slot;
    An RF antenna contact having a form of a pair of conductor strips formed on one side or the other side of the case and connected to an external RF antenna; And
    An internal circuit block mounted inside the case and storing information obtained by processing signals input to the memory card slot contact, the contact pad, and the RF antenna contact;
    Data storage device comprising a.
  14. Rectangular plate-like shaped case;
    A memory card slot contact portion having a form of conductor strips arranged in a line near one side of one surface of the case and being in contact with an external memory card slot;
    A contact pad having a shape of six conductor strips formed on one surface of the case and capable of contacting an external contact IC slot;
    An RF strip antenna positioned at an opposite side of the memory card slot contact portion of the case to transmit and receive an RF signal for NFC wireless communication; And
    An internal circuit block mounted inside the case and storing information obtained by processing signals input to the memory card slot contact, a contact pad, and an RF strip antenna
    Data storage device comprising a.
  15. The method according to claim 13 or 14,
    Conversion case having a contour of the USIM and having a groove into which the case can be fitted
    Data storage device further comprising.
KR1020100045295A 2010-05-14 2010-05-14 Data storing device for near field communication KR20110125758A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160139511A (en) 2015-05-28 2016-12-07 권순원 Smart phone memory cover
KR102072676B1 (en) * 2018-10-08 2020-02-03 이현우 Smart phone case with card and music album with video and music

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160139511A (en) 2015-05-28 2016-12-07 권순원 Smart phone memory cover
KR102072676B1 (en) * 2018-10-08 2020-02-03 이현우 Smart phone case with card and music album with video and music

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