KR100684031B1 - Data communication system, data communication device and data communicating method - Google Patents

Abstract

A data communication system, a data communication terminal, and a data communication method are provided to connect a computer and a data communication terminal and also connect the data communication terminal and a mobile terminal through a wireless network, thereby transmitting a data file of the computer through a single wireless communication system. The first local area communication module processes a communication protocol that requires an authentication procedure to establish the first communication network. The second local area communication module processes a communication protocol that does not require the authentication procedure to establish the second communication network, and transmits/receives network connection information of the first local area communication module through the second communication network. A transmission interface module is connected with an external terminal and transits data between the external terminal and the first local area communication module.

Description

Data communication system, data communication terminal and data communication method

1 is a block diagram schematically showing the components of a data communication system according to an embodiment of the present invention;

2 is a block diagram schematically showing the components of a data communication terminal according to a first embodiment of the present invention;

3 is a block diagram schematically illustrating components of a Near Field Communication (NFC) module according to an embodiment of the present invention.

4 is a block diagram schematically illustrating components of a Bluetooth module according to an embodiment of the present invention;

5 is a diagram illustrating a protocol stack configuration of Bluetooth according to an embodiment of the present invention.

6 is a block diagram schematically showing the components of a data communication terminal according to a second embodiment of the present invention.

7 is a block diagram schematically illustrating the components of a mobile communication terminal according to an embodiment of the present invention.

8 is a structural diagram illustrating a connection structure of a data communication terminal, a mouse, and a computer according to an embodiment of the present invention.

9 is a perspective view illustrating a form in which the components of the data communication terminal according to the embodiment of the present invention are mounted.

10 is a data flow diagram illustrating an authentication procedure, a setup process, and data transmission in a data wireless communication method according to an embodiment of the present invention.

<Explanation of symbols for main parts of drawing>

1300,2300: Data communication terminal 1310,2310: NFC module

1320,2320: Bluetooth module 1330,2330: storage module

1340, 2340: USB hub 1350, 2350: USB port

The present invention relates to a data communication system and a data communication method using a data communication terminal, and more particularly, to a system, an apparatus, and a method for authentication and data transmission in short-range wireless data communication such as Bluetooth and NFC.

Recently, with the development of the communication field, attention has been focused on the short-range wireless communication method.

Short-range wireless communication is within 100m from information and communication devices such as computers, printers, telephones and facsimile, as well as home appliances such as TVs and refrigerators, such as Bluetooth, IRDA, and Shared Wireless Access Protocol (SWAP). Refers to a wireless interface standard capable of wireless data communication at a distance.

In particular, among short-range wireless communication, Bluetooth has a wide range of applications, and can be used for connecting computers and peripheral devices, mobile communication terminals, headphones, access cards, local area networks, etc., and two-way communication is possible. There is an advantage.

Since the Bluetooth standard is designed for use in a mobile environment, all the information is transmitted through a non-complementary radio medium, which requires an authentication process. Authentication is largely required for authentication and authorization. Divided by.

Access qualification authentication refers to a device identification process performed between terminals in order to form a network network, and the use authority authentication means that a user of an external device can use the corresponding application program for each application in a state where the connection between the external device and the corresponding device is established. The process of determining whether or not.

In other words, when the access qualification is made, the other device is connected with the corresponding device, and then the corresponding application is used through authentication of authorization while exchanging packets, and a separate encryption process is used to transmit information. Information can be protected by doing so.

Therefore, the data communication by the conventional Bluetooth module is a process that requires the user to input the authentication information and use information, and if the user transmits payment, personal information exchange, secret information, separate encryption (for example, password, social security number) It is inconvenient for the general public to use because it requires a credit card number.

In addition, in order for the data communication terminal to receive necessary data from an external device and deliver the necessary data to the mobile communication terminal, a communication system must be provided between the external device and the data communication terminal, and between the data communication terminal and the mobile communication terminal.

In addition, as described above, since the user must input personal information, authentication information, etc., authentication, and device identification every time the user is connected to the Bluetooth network, it lacks speed and requires a relatively large amount of computation.

As this is a problem directly related to the speed and convenience which are the most important in wireless data communication, there is a need for improvement.

The present invention provides a data communication terminal that receives a data file on a computer and transmits the data file to a mobile communication terminal through a wireless network, and improves the connection configuration and connection processing between the wired network and the wireless network and enables efficient device / user authentication. Provides a data communication terminal capable of fast short-range data communication.

In addition, the present invention connects a data communication terminal that can be used as a computer and a peripheral device of the computer, and connects the data communication terminal and the mobile communication terminal to a wireless network to transmit a data file on the computer by a single wireless communication system Provide a data communication system.

In addition, the present invention is provided with a heterogeneous wireless network, one side of the wireless network to handle data communication, the other side of the wireless network to separate the functions to handle the complex authentication process of the one side of the wireless network quickly and conveniently It provides a data communication method for network connection and file transfer.

The data communication terminal according to the present invention comprises a first short-range communication module for processing a communication protocol requiring an authentication procedure to form a first communication network; A second short-range communication module for processing a communication protocol that does not require an authentication process to form a second communication network, and transmitting and receiving network connection information of the first short-range communication module through the second communication network; It is connected to an external terminal, and includes a transmission interface module for transmitting data between the external terminal and the first local area communication module.

A data communication system according to the present invention comprises a computer having a communication port and storing a data file; A first near field communication module for processing a communication protocol requiring an authentication procedure to form a first communication network; A second short-range communication module for processing a communication protocol that does not require an authentication process to form a second communication network, and transmitting and receiving network connection information of the first short-range communication module through the second communication network; A data communication terminal including a transmission interface module for connecting the first near-field communication module to the computer through the communication port; And a third local area communication module and a fourth local area communication module corresponding to the first local area communication module and the second local area communication module of the data communication terminal to receive data from the computer through the data communication terminal. It includes a mobile communication terminal.

The data communication method according to the present invention comprises a first short-range communication module for processing a communication protocol requiring an authentication procedure to form a first communication network, and a second communication network for processing a communication protocol not requiring an authentication procedure. 2. A data communication system comprising a data communication terminal and a mobile communication terminal having at least two local area communication modules, wherein the second local area communication module of the data communication terminal and the second local area communication module of the mobile communication terminal perform the authentication procedure. Processing a communication protocol that is not needed to form a second communication network; The first short-range communication module of the data communication terminal and the first short-range communication module of the mobile communication terminal are connected to each other through the second short-range communication module of the data communication terminal and the second short-range communication module of the mobile communication terminal. Transmitting and receiving network connection information between a first local area communication module and a first local area communication module of the mobile communication terminal; And when the network connection information is confirmed, forming a first communication network by a first local area communication module of the data communication terminal and a first local area communication module of the mobile communication terminal.

Hereinafter, a data communication system, a data communication terminal, and a data communication method according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram schematically illustrating components of a data communication system 1000 according to an exemplary embodiment of the present invention.

Referring to FIG. 1, a data communication system 1000 according to an exemplary embodiment of the present invention includes a computer 1100, a network 1200, a data communication terminal 1300, and a mobile communication terminal 1400.

The computer 1100 is provided in a public place such as a library or a cultural center, and a communication fee and an authentication process are required because a usage fee is charged to receive data stored in the computer 1100.

The network 1200 is a transmission medium for connecting the data communication terminal 1300 and the computer 1100 in the present invention, a communication port such as a USB hub (Universal Serial Bus Hub), USB port (Universal Serial Bus Port) is used. Can be.

The data communication terminal 1300 and the mobile communication terminal 1400 having a plurality of local area communication modules have a corresponding local area communication module and process a unique communication protocol to form a communication network, and perform data communication through the communication network. Perform.

Many short-range communication modules are classified into two types according to the types of communication protocols. The first is a short-range communication module that processes a "communication protocol requiring an authentication procedure." The second is a communication protocol that does not require an authentication procedure. Is a short-range communication module for processing.
The communication protocol (hereinafter referred to as "first communication protocol") that does not require the authentication procedure, for example, such as a traffic card, the communication module is in contact with each other or the communication module enters within a communication distance of several cm to several tens of cm If not, it refers to a protocol that can form a communication network by only identifying the device (that is, contact or contactless, and does not require a separate authentication process because it is a peer-to-peer method) without a separate authentication process.
In addition, the communication protocol (hereinafter referred to as "second communication protocol") that requires the authentication procedure, a plurality of communication modules (not peer-to-peer method) is located within a communication distance of several tens of meters to hundreds of meters It refers to a protocol that forms a communication network through identification, connection setup, and authentication procedures.

An NFC module may be used as a local area communication module that processes the first communication protocol to form a communication network, and a Bluetooth module may be used as a local area communication module that forms the communication network by processing the second communication protocol.

Accordingly, the data communication terminal 1300 connected to the computer 1100 and the network 1200 transmits the data file stored in the computer 1100 to the data communication terminal 1300 through the network 1200 and the data communication. The terminal 1300 performs data communication through the NFC network and the Bluetooth network formed by the mobile communication terminal 1400, the NFC module, and the Bluetooth module by processing a communication protocol.

The components of the data communication terminal 1300 and the mobile communication terminal 1400 included in the data communication system will be described.

2 is a block diagram schematically illustrating the components of the data communication terminal 1300 according to the first embodiment of the present invention.

Referring to FIG. 2, the data communication terminal 1300 according to the first embodiment of the present invention includes an NFC module 1310, a Bluetooth module 1320, a storage module 1330, a USB hub 1340, and a USB port 1350. It is configured to include).

First, the NFC module 1310 is connected to the Bluetooth module 1320 to process the second communication protocol to form a Bluetooth communication network, to process the first communication protocol to form an NFC communication network, the Bluetooth through the NFC communication network Transmits and receives network connection information of the module 1320.

The NFC protocol refers to a communication standard that can be used at a distance of 10 cm or less between communication devices, and 13.56 MHz of an Industrial Scientific Medical (ISM) band is adopted as a frequency of a carrier wave used by the NFC communication standard. Can be.

Hereinafter, look at the components and functions of the NFC module.

3 is a block diagram schematically illustrating components of an NFC module 1310 according to an embodiment of the present invention.

Referring to FIG. 3, the NFC module 1310 according to the embodiment of the present invention includes an antenna 1315, a receiver 1311, a demodulator 1312, a decoder 1313a, a data processor 1314, and an encoder ( 1313b), selector 1316, modulator 1317a, load modulator 1317b, detector 1318, and electromagnetic wave output unit 1319.

The antenna 1315 is composed of a closed loop coil and outputs electromagnetic waves by changing the current flowing through the coil. In addition, a current flows through the antenna 1315 by changing the magnetic flux passing through the antenna 1315 coil.

The receiver 1311 receives a current flowing through the antenna, performs tuning and detection, and transmits the signal to the demodulator 1312. The demodulator 1312 demodulates a signal supplied from the receiver 1311 to decode the signal. In operation 1313a, the decoder 1313a decodes the signal received from the demodulator 1312 and transfers the data obtained as a result to the data processor 1314.

The data processor 1314 processes the data according to the data command received from the decoder 1313a, and transmits data to be transmitted to another device to the encoder 1313b.

The encoder 1313b encodes the data received from the data processor 1314 and transmits the data to the selector 1316. The selector 1316 is one of the modulator 1317a or the load modulator 1317b. Either one is selected, and the signal received from the encoding unit 1313b is output to the selected side.

Herein, the selector 1316 selects the modulator 1317a or the load modulator 1317b according to a control signal, and the control signal is an active mode and a passive in accordance with an operation state of the NFC module 1310. It has a passive mode.

The active mode is a communication method in which two communicating devices transmit data while transmitting a unique RF magnetic field. In the passive mode, only one device (a device that initiates communication) of the two communicating devices has a unique RF magnetic field. And other devices (receiving devices) use load modulation to transmit data.

For example, when two communication devices having the NFC module 1310 perform short-range communication, a communication device that starts communication is called an "initiator" and a device that receives communication is called a "target". do.

In this case, when the communication mode is the passive mode and the communication device is the target, the selector 1316 selects the load modulator 1317b, and when the communication mode is the active mode or the communication mode is the passive mode and the communication device is selected. Is an initiator, the selector 1316 selects a modulator 1317a.

Accordingly, the signal output from the encoder 1313b is transmitted to the load modulator 1317b through the selector 1316 when the communication mode is the passive mode and the communication device is the target. Is transmitted to the modulator 1317a through the selector 1316.

The electromagnetic wave output unit 1319 adjusts the current flowing through the antenna so that the output signal radiated from the antenna has a single frequency. The modulator 1317a modulates a carrier wave as a current flowing through the antenna according to a signal transmitted from the selector 1316. Accordingly, the antenna emits an electromagnetic wave that modulates a carrier wave according to data that the data processor 1314 outputs to the encoder unit 1313b.

The load modulator 1317b changes the impedance when the coil of the antenna is viewed from the outside according to a signal supplied from the selector 1316. When an RF device is formed around the antenna by another device outputting electromagnetic waves as a carrier wave, the impedance is changed to change the RF magnetic field around the antenna.

Accordingly, a carrier wave, which is an electromagnetic wave output from another device, is modulated according to a signal supplied from the selection unit 1316, and the data processing unit 1314 changes the output data of the encoder 1313b in the form of an electromagnetic wave. Send to

Here, the modulation scheme of the modulator 1317a and the load modulator 1317b may employ, for example, Amplitude Shift Keying (ASK). However, the modulation method of the modulator 1317a and the load modulator 1317b is not limited to ASK, but may adopt a method such as phase shift keying (PSK) or quadrature amplitude modulation (QAM).

The detector 1318 receives a current flowing through the antenna 1315 similarly to the receiver 1311, and detects a magnetic flux density of the antenna 1315 according to the received current.

Referring back to FIG. 2, the Bluetooth module 1320 exchanges the network connection information with the NFC module 1310, and a Bluetooth network is formed using mutually confirmed network connection information. It performs data communication with NFC network separately.

The network connection information includes device identification information and authentication key information of the Bluetooth module. The device identification information means a device number of the Bluetooth module 1320, and the authentication key information is a data packet information. It may be a link key programmed to be generated each time a key and a Bluetooth module 1320 are connected.

The Bluetooth protocol refers to a communication standard that can transmit and receive data using a frequency of 2.4 GHz over a short range of about 10 m to 100 m. This communication standard handles crosstalk occurring when the same frequency is used, or identifies between devices. It contains the specifications as agreed for.

Hereinafter, the components and functions of the Bluetooth module 1320 will be described.

4 is a block diagram schematically illustrating components of a Bluetooth module 1320 according to an embodiment of the present invention.

Referring to FIG. 4, the Bluetooth module 1320 according to the embodiment of the present invention includes a data processor 1321, a controller 1322, an RF processor 1323, and an antenna 1324.

The data processor 1321 processes the data transmitted from the controller 1322, and stores the processed data in a flash memory, a RAM, or the like.

The controller 1322 processes a low band frequency (eg, 2.4 GHz band frequency), sets a group in a communication period to control a communication sequence, sets a communication channel to configure a wireless network, and controls transmission and reception of Bluetooth communication. do.

The RF processor 1323 is connected to the controller 1322 to amplify an output signal and transmit the amplified signal through the antenna 1324, and performs a band filter process on a frequency of the 2.4 GHz band received from the antenna 1324. .

That is, the RF processor 1323 separates the amplified signal and the filtered signal and transmits the data in a manner of separating and transmitting the full-duplex method.

The function of the Bluetooth module 1320 is controlled according to the protocol of Bluetooth, so the configuration of the protocol stack of Bluetooth will be described.

5 is a diagram illustrating a protocol stack configuration of Bluetooth according to an embodiment of the present invention.

Referring to FIG. 5, the protocol stack of Bluetooth according to an embodiment of the present invention includes a Bluetooth Radio layer, a Baseband layer, a Link Management Protocol (LMP) layer, a Host Controller Interface (HCI), and a Logical Link Control and Adaptation (L2CAP). Protocol (RFCOMM) layer, Cable Replacement Protocol (RFCOMM) layer, Service Discovery Protocol (SDP) layer, TCS Telephony Control Protocol Specification Binary (BIN) layer, AT command layer, Point-t-Point (PPP) layer, TCP / UDP / IP It is composed of layer, WAP / WAE layer, Object Exchange Protocol (OBEX) layer, and vCard / vCalender layer.

The Bluetooth Radio layer defines a physical channel and uses a frequency of 2.4 GHz to 2.484 GHz.

The baseband layer defines a physical channel and is responsible for frequency hopping. Since the data in the packet state uses the frequency hopping spread spectrum method, Bluetooth plays a role of synchronizing a clock with a hopping frequency of a terminal equipped with a Bluetooth module using an inquiry and paging method.

The baseband layer provides two physical connection methods, which are classified into SCO (Synchronous Connection Oriented) used for data communication and voice communication and Asynchronous Connection Less (ACL) mainly used for data communication.

The LMP layer establishes a link between terminals equipped with a Bluetooth module and functions for security. For example, it functions to generate, exchange, check, manage piconet connection, and control the baseband packet size.

The L2CAP layer is located above the baseband and provides a service that plays a multi-communication function, division and combination of data, and group abstraction for the upper protocol stack.

The SDP layer provides a service for pre-determining the use of the Bluetooth module, and by using the SDP layer, it is possible to grasp the information and the contents of the service provided by the terminal having each Bluetooth module to communicate between the terminals. To be.

The RFCOMM layer is a protocol that replaces serial transmission such as RS-232C connecting a modem. The RFCOMM layer supports RS-232C control or data signals on a baseband to a higher protocol requiring a serial transmission function.

The TCS BIN layer defines a call control signal for establishing voice or call data between Bluetooth devices.

The AT command layer controls a mobile phone or a modem, the PPP layer is defined to establish a one-to-one connection of a Bluetooth device, the TCP / UDP / IP layer enables Internet access, and the WAP / WAE The layer is used to provide Internet contents or additional services to a mobile communication terminal through a wireless network.

The OBEX layer is a protocol for exchanging data using a client / server model, and the vCard / vCalender layer is a protocol for defining electronic business cards, personal calendar input, schedule management, and the like.

Referring back to FIG. 2, the storage module 1330 provides a temporary storage space when data is transmitted and received, and is a nonvolatile memory that stores data transmitted from the network 1200 even after the network 1200 is disconnected. For example, a flash memory may be used.

In addition, the USB hub 1340 connects the Bluetooth module 1320 with the external computer 1100 through the network 1200, and transmits a data file between the external computer 1100 and the Bluetooth module 1320. It is the transmission interface to transmit. In addition, the NFC module 1310 is connected to the Bluetooth module 1320 through the USB hub 1340.

In addition, the USB port is a connection means for providing a network 1200 between the data communication terminal 1300 and the external computer 1100.

The NFC module 1310 and the Bluetooth module 1320 are connected to the USB hub 1340 and the serial cable, respectively, to receive data transferred to the USB hub 1340 independently, and the NFC module 1310 and An operation amount processed by the Bluetooth module 1320 may be reduced.

6 is a block diagram schematically illustrating components of a data communication terminal according to a second embodiment of the present invention.

Referring to FIG. 6, the data communication terminal 2300 according to the second embodiment of the present invention includes an NFC module 2310, a Bluetooth module 2320, a storage module 2330, a USB hub 2340, and a USB port 2350. It is configured to include.

The function of each component is as described above and only the connection structure is different, The NFC module 2310, the Bluetooth module 2320, the storage module 2330, the USB hub 2340, and the USB The ports 2350 are sequentially arranged and the storage module 2330 is connected to the USB hub 2340.

The arrangement sequence can arrange the components in the order in which the wireless communication network is formed (NFC network formation, Bluetooth network formation) to efficiently perform data transmission, and can secure autonomy of circuit arrangement.

The data communication system 1000 is a system for exchanging data between the data communication terminals 1300 and 2300 and the mobile communication terminal 1400. The components of the mobile communication terminal 1400 will be described. In the following description of the data communication terminal, the codes of the data communication terminal of FIG. 6 are omitted.

7 is a block diagram schematically illustrating the components of a mobile communication terminal 1400 according to an embodiment of the present invention.

Referring to FIG. 7, the mobile communication terminal 1400 according to the embodiment of the present invention includes a mode conversion switch 1410, an RF transceiver 1420, an NFC module 1430, a Bluetooth module 1440, and a user I / F ( 1450, and a mobile station modem (MSM) module 1460.

The mode conversion switch 1410 performs a switching operation according to a switching control signal, and separates a signal according to whether a signal transmitted and received is an RF communication, a Bluetooth communication, or an NFC communication, according to a usage mode of the mobile communication terminal 1400.

The RF (Radio Frequency) transceiver 1420 converts a voice and data signal to be transmitted from the mobile communication terminal 1400 into an RF signal, and converts an RF signal received by the mobile communication terminal 1400 into an IF (Intermediated Frequency). Convert to a signal.

The NFC module 1430 and the Bluetooth module 1440 correspond to the NFC module 1310 and the Bluetooth module 1320 of the data communication terminal 1300.

That is, the NFC module 1430 processes the first communication protocol to form an NFC network with the NFC module 1310 of the data communication terminal 1300, and the network of the Bluetooth module 1440 through the NFC network. The authentication procedure is performed between the Bluetooth modules 1320 and 1440 by transmitting the access information.

The Bluetooth module 1440 checks network connection information, and a Bluetooth network is formed with the Bluetooth module 1320 of the data communication terminal 1300 and data is transmitted through the Bluetooth network.

The user I / F 1450 is an interface for inputting user information and setting information necessary for a data communication process and transmits command data input by the user to the MSM module 1460.

The MSM module 1460 defines an address map that allocates an interface with an external device such as a memory and an address required to perform an internal operation. Thus, an interface between an external device such as a memory and an internal device of the MSM module 1460 is defined. It provides a function of the USB hub 1340.

In the following, the data communication terminal 1300 will be described in which the connection structure connected to the external computer 1100 and the network 1200 and the components of the data communication terminal 1300 are mounted.

8 is a structural diagram illustrating a connection structure of a data communication terminal 1300, a mouse, and a computer 1100 according to an embodiment of the present invention, Figure 9 is a data communication terminal 1300 according to an embodiment of the present invention ) Is a perspective view illustrating a form in which the components of) are mounted.

Referring to FIG. 8, the connection structure of the data communication terminal 1300, the mouse, and the computer 1100 according to an embodiment of the present invention includes a first embodiment (a) of a mouse connected to the data communication terminal 1300, and a mouse. There is a second embodiment (b) directly connected to the computer 1100.

The housing of the data communication terminal 1300 has a flat thickness having a predetermined thickness (eg, within 5 cm), and the NFC module 1310, the Bluetooth module 1320, the storage module 1330, and the USB hub 1340. ), The USB port 1350 is accommodated therein, and the upper plate H1 of the housing part is made of a shape and a material for enabling a sensing operation of a mouse.

Accordingly, the top plate H1 of the data communication terminal 1300 may be used as a mouse pad by sensing a mouse and the mouse may be connected to the USB hub having a plurality of ports (a).

In addition, the data communication terminal 1300 may be used only as a mouse pad and a mouse may be directly connected to the computer 1100 (b).

9, the NFC module 1310, the Bluetooth module 1320, the storage module 1330, and the USB hub 1340 are mounted in the data communication terminal 1300 according to an embodiment of the present invention. have.

The NFC module 1310 is mounted in the center of the housing part, the antenna of the NFC module 1310 is disposed around the NFC module 1310 in a closed loop shape, and the housing part has four side plates H2 and a top plate H1. ) And the bottom plate (H3).

As the antenna of the NFC module 1310 increases in size, transmission and reception performance is improved, and thus, the housing part may have a mouse pad form (flat plate having a predetermined thickness) to increase the transmission / reception rate of the NFC module 1310.

10 is a data flow diagram illustrating an authentication procedure, a setup process, and data transmission in a data wireless communication method according to an embodiment of the present invention.

First, the NFC module 1310 (NFC1) of the data communication terminal 1300 and the NFC module 1430 (NFC2) of the mobile communication terminal 1400 form an NFC network by transmitting and processing an NFC protocol packet ( S10).

When the NFC network is formed, the Bluetooth module 1440 (BT2) of the mobile communication terminal 1400 is BT1 device identification information (the data communication terminal 1300) to the NFC module 1430 of the mobile communication terminal 1400. The device identification information of the Bluetooth module 1320 of the) transmits a request signal (S11), the NFC module 1430 of the mobile communication terminal 1400 receiving the BT1 device identification information request signal is the The BT1 device identification information request signal is transmitted to the NFC module 1310 of the data communication terminal 1300 (S12).

Next, the NFC module 1310 of the data communication terminal 1300 transmits the received BT1 device identification information request signal to the Bluetooth module 1320 (BT1) of the data communication terminal 1300 (S13), The Bluetooth module 1320 of the data communication terminal 1300 transmits BT1 device identification information to the NFC module 1310 of the data communication terminal 1300 (S14).

In addition, the NFC module 1320 of the data communication terminal 1300 transmits the BT1 device identification information to the NFC module 1430 of the mobile communication terminal 1400 via the NFC network (S15). The NFC module 1430 of the terminal 1400 transmits the received BT1 device identification information to the Bluetooth module 1440 of the mobile communication terminal 1400 (S16).

In addition, the Bluetooth module 1440 of the mobile communication terminal 1400 is a BT2 device identification information (device identification information of the Bluetooth module 1440 of the mobile communication terminal 1400) NFC module of the mobile communication terminal 1400. In operation S17, the NFC module 1430 of the mobile communication terminal 1400 transfers the received BT2 device identification information to the NFC module module 1310 of the data communication terminal 1300 through an NFC network. Transmit (S18).

In addition, the NFC module module 1310 of the data communication terminal 1300 transmits BT2 device identification information to the Bluetooth module 1320 of the data communication terminal 1300 (S19), and of the data communication terminal 1300. The Bluetooth module 1320 transmits an ACK (Acknowledge) signal to the NFC module 1310 of the data communication terminal 1300 (S20).

In addition, the NFC module 1310 of the data communication terminal 1300 transmits the transmitted ACK signal to the NFC module 1430 of the mobile communication terminal 1400 through the NFC network (S21), the mobile communication terminal ( The NFC module 1430 of the 1400 transmits an ACK signal to the Bluetooth module 1440 of the mobile communication terminal 1400 (S22).

After the device identification, the Bluetooth module 1440 of the mobile communication terminal 1400 transfers the BT2 authentication key information to the NFC module 1430 of the mobile communication terminal 1400 (S23), and the mobile communication terminal ( NFC module 1430 of 1400 transmits the BT2 authentication key information to the NFC module 1310 of the data communication terminal 1300 through the NFC network (S24).

In addition, the NFC module 1320 of the data communication terminal 1300 transfers the received BT2 authentication key information to the Bluetooth module 1320 of the data communication terminal 1300 (S25) and the data communication terminal 1300. The Bluetooth module 1320 checks network connection information (device identification information and authentication key information) (S26) and transfers the BT1 authentication key information to the NFC module 1310 of the data communication terminal 1300 (S27).

In addition, the NFC module 1310 of the data communication terminal 1300 transmits the BT1 authentication key information to the NFC module 1430 of the mobile communication terminal 1400 through an NFC network (S28), and the mobile communication terminal ( NFC module 1430 of 1400 transmits the BT1 authentication key information to the Bluetooth module 1440 of the mobile communication terminal 1400 (S29).

When the transmission and reception of the authentication key information ends, the Bluetooth module 1440 of the mobile communication terminal 1400 checks network connection information (device identification information and authentication key information) and forms a Bluetooth network (S30).

In addition, when the Bluetooth network is formed, the Bluetooth module 1320 of the data communication terminal 1300 and the Bluetooth module 1440 of the mobile communication terminal 1400 to correspond to the type of data file to be transmitted through the Bluetooth network. Set up Bluetooth by transmitting setup information according to a service usage type such as a printer, a fax, a headset (S31).

After the setup process, the Bluetooth module 1320 of the data communication terminal 1300 and the Bluetooth module 1440 of the mobile communication terminal 1400 transmit a data file through the Bluetooth network (S32).

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.

According to the present invention, when performing a data communication having a relatively long communication distance, such as Bluetooth and difficult authentication process, the user by processing a network connection using a heterogeneous network having a shorter communication distance and simplified authentication procedures like NFC This eliminates the hassle of setting network access information and provides a data communication terminal that can process network access quickly.

In addition, the data communication terminal according to the present invention is a computer peripheral device connected by a cable such as a USB, it is possible to connect other peripheral devices such as a mouse to the computer through the hub function to the mouse pad using the antenna mounting area Since it can be used, there is an effect of providing a lot of convenience to the computer in addition to the basic communication functions.

In addition, according to the data communication method according to the present invention, the authentication of the communication module for file transfer is achieved by simply contacting a mobile communication terminal with a protocol type communication module that does not require an authentication procedure with a computer peripheral device. Automatically processed and authentication is processed, the user can move around the computer to download the file to the mobile terminal, so anyone in the public place can easily process the authentication and use the data.

Claims (16)

A first near field communication module for processing a communication protocol requiring an authentication procedure to form a first communication network; A second short-range communication module for processing a communication protocol that does not require an authentication process to form a second communication network, and transmitting and receiving network connection information of the first short-range communication module through the second communication network; And a transmission interface module connected to an external terminal and transmitting data between the external terminal and the first local area communication module. The method of claim 1, wherein the first short-range communication module Send and receive the network connection information with the second local area communication module, and form the first communication network using the mutually confirmed network connection information, and if formed in the first communication network, data communication is separately performed with the second communication network. A data communication terminal, characterized in that performing. The method of claim 1, wherein the first short-range communication module Data communication terminal, characterized in that the Bluetooth module. The method of claim 1, wherein the second near field communication module Data communication terminal, characterized in that the NFC module for performing the authentication procedure of the communication device. The method of claim 1, And the second short range communication module is connected to the first short range communication module through the transmission interface module. The method of claim 1, wherein the transmission interface module Data communication terminal, characterized in that the USB hub (Universal Serial Bus Hub) having a plurality of ports. The method of claim 1, And a storage module connected to the transmission interface module to provide a storage space when transmitting and receiving data. The method of claim 1, wherein the transmission interface module, the first near field communication module, the second near field communication module Data communication terminal, characterized in that sequentially connected. The method of claim 1, wherein the first local area communication module, the second local area communication module and the transmission interface module The data communication terminal is accommodated in a flat housing portion having a predetermined thickness, wherein the upper plate of the housing portion is formed in the form of a mouse pad. The method of claim 6, wherein the second near field communication module And a antenna mounted in the center of the housing and arranged around the second near field communication module in a closed loop form. The method of claim 1, wherein the network connection information is And a device identification information and authentication key information unique to the first local area communication module. A computer having a communication port and storing a data file; A first near field communication module for processing a communication protocol requiring an authentication procedure to form a first communication network; A second short-range communication module for processing a communication protocol that does not require an authentication process to form a second communication network, and transmitting and receiving network connection information of the first short-range communication module through the second communication network; A data communication terminal including a transmission interface module for connecting the first near-field communication module to the computer through the communication port; And A third short distance communication module and a fourth short distance communication module corresponding to the first short distance communication module and the second short distance communication module of the data communication terminal, respectively, to transfer data of the computer through the data communication terminal; Data communication system including a communication terminal. 13. The mobile communication terminal of claim 12, wherein the mobile communication terminal And a data communication terminal capable of automatically transmitting and receiving data between the computer and the mobile communication terminal during the authentication process of the mobile communication terminal. At least a first near field communication module for processing a communication protocol requiring an authentication procedure to form a first communication network, and a second near field communication module for processing a communication protocol not requiring an authentication procedure to form a second communication network; In a data communication system comprising a data communication terminal and a mobile communication terminal, Forming a second communication network by processing a communication protocol that does not require the authentication procedure by the second short range communication module of the data communication terminal and the second short range communication module of the mobile communication terminal; The first short-range communication module of the data communication terminal and the first short-range communication module of the mobile communication terminal are connected to each other through the second short-range communication module of the data communication terminal and the second short-range communication module of the mobile communication terminal. Transmitting and receiving network connection information between a first local area communication module and a first local area communication module of the mobile communication terminal; And And when the network connection information is confirmed, forming a first communication network by a first local area communication module of the data communication terminal and a first local area communication module of the mobile communication terminal. 15. The method of claim 14, wherein transmitting and receiving network connection information of the first local area communication module through the second communication network Transmitting and receiving device identification information of a first local area communication module of the data communication terminal and the first local area communication module of the mobile communication terminal; And And transmitting and receiving authentication key information of the first short-range communication module of the data communication terminal and the first short-range communication module of the mobile communication terminal. 15. The method of claim 14, wherein forming the second communication network Setting up a second local area communication module of the data communication terminal and a second local area communication module of the mobile communication terminal so as to correspond to a type of data file to be transmitted through the second communication network; And And the data is transmitted between the second local area communication module of the data communication terminal and the second local area communication module of the mobile communication terminal when the setup process is completed.

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