KR20060073327A - Mobile communication terminal for providing mp3 data in identification information changing and method therefor - Google Patents

Abstract

The present invention relates to a mobile communication terminal and method for converting and reproviding MP3 data when identification information is changed.

The present invention provides a mobile communication terminal that accesses an MP3 purchase history server through a mobile communication network to download and use MP3 data, and includes a plurality of numeric keys, text keys, call keys, and end keys to dial, select menus, Provide key selection function for call termination and command input, select MP3 data service mode of the mobile communication terminal, input user's unique identifier for connection with MP3 purchase history server when identification information is changed, user A key input unit as function selection means for selecting, storing, deleting, and reproducing a desired MP3 data from among a list of MP3 data provided from the MP3 purchase history server for inputting an authentication number for confirmation; Provides an interface screen for displaying power usage, radio wave reception strength, the overall operating state of the mobile communication terminal, providing an MP3 data service, and displaying input / output of authentication information for confirmation of the user. A display unit; Executes a function of storing, deleting, and playing the wireless Internet browser for accessing the MP3 purchase history server and the MP3 data downloaded from the MP3 purchase history server, and accessing the MP3 purchase history server when identification information is changed; Built-in MP3 execution program for transmitting and receiving the unique identifier and authentication information for user confirmation, and the function of receiving and storing the MP data that is converted and transmitted to match the changed identification information from the MP3 purchase history server. Memory; And controlling data to be transmitted and received according to a predetermined communication protocol, controlling access to the MP3 purchase history server using the wireless Internet browser stored in the memory, and driving the MP3 execution program to execute the MP3 data service. It provides a mobile communication terminal for providing MP3 data when changing identification information, characterized in that it comprises a microprocessor for controlling to provide.

According to the present invention, when the user replaces the mobile communication terminal or changes the phone number, there is an effect of reusing the MP3 data remaining in the valid period by solving the problem of duplication of previously purchased MP3 data.

MP3, DRM, Replacement, Content, Authentication

Description

Mobile communication terminal for providing MP3 data when identification information is changed and mobile communication terminal for providing MP3 data in identification information changing and method therefor}

1 is a block diagram showing the configuration of a system for providing an MP3 data service for a mobile communication terminal according to an embodiment of the present invention;

2 is a block diagram showing an internal configuration of a mobile communication terminal using MP3 data downloaded from an MP3 purchase history server according to an embodiment of the present invention;

3 is a flowchart illustrating a method of providing a download service of MP3 data when changing identification information of a mobile communication terminal according to an exemplary embodiment of the present invention.

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

200: program memory 210: internal memory

220: mode state storage unit 230: microprocessor

240: key input unit 250: display unit

260: digital signal processing unit 270: baseband conversion unit

280: speaker 290: microphone

291 antenna 292 RF signal processing unit

The present invention relates to a mobile communication terminal and method for converting and reproviding MP3 data when identification information is changed. More specifically, when the mobile terminal accesses the MP3 purchase history server through the mobile communication network, the MP3 data is provided when the identification information is changed to download and use specific MP3 data from the MP3 data service provided by the MP3 purchase history server. It relates to a mobile communication terminal and a method thereof.

With the rapid development of computer, electronic and communication technologies, various wireless communication services using wireless networks have been provided. The most basic wireless communication service is a wireless voice call service that provides a voice call wirelessly between mobile terminal users regardless of time and place. In recent years, wireless Internet services have emerged, in which a mobile terminal user can use Internet services through a wireless communication network.

As the number of mobile service subscribers exploded, most people now receive more than one mobile service. Accordingly, in addition to simple voice calls, text and voice message transmission services, mobile contents providing services that download and use various contents such as games, wallpaper, and ringtones to the mobile communication terminal through the Internet or a mobile communication network are active. Is being used. When the user selects the desired content from the content server, the wireless content service transmits the selected content to the mobile communication terminal, and the mobile communication service company charges the cost of providing the content to the user. Specifically, a user accesses a wireless Internet server of a mobile communication company or a content provider using a program or an ARS service that can use a wireless Internet service, and then selects desired content. The wireless Internet server transmits the contents to the user's mobile terminal according to a protocol such as WAP (Wireless Application Protocol) or ME (Mobile Explorer), and the mobile terminal stores the contents in the storage space of the mobile terminal. do.

When the user uses the MP3 data service to which DRM (Digital Rights Management) is applied in the mobile terminal, when the user replaces the mobile terminal or changes the phone number, the MP3 data, which has been previously purchased and stored in the mobile terminal, is regenerated There is a problem that cannot be used. Here, the DRM includes both software and hardware that provide an infrastructure system that encrypts digital content, protects copyright, enforces payment approval, and restricts usage rights. do. Detailed technologies applied to DRM include encryption / decryption technology, management of encryption keys, authentication procedures and processing, illegal distribution monitoring and tracking, control of usage rules, collection and payment of royalties.

MP3 data service using DRM encrypts MP3 data by using unique number or phone number of mobile communication terminal. Therefore, when a user purchases MP3 data from a content server, the MP3 data is encrypted using a unique number or a phone number of the mobile communication terminal, and when the MP3 data is reproduced on the mobile communication terminal, the unique number or phone of the mobile communication terminal. The procedure is confirmed using the number.

Therefore, when the user replaces the mobile communication terminal or changes the phone number, even if the MP3 data previously stored and stored remain valid, the user cannot purchase the same content again because the purchase cannot be avoided. do.

In order to solve this problem, the present invention, when changing the identification information of the mobile communication terminal in the mobile terminal using a unique identifier (resident registration number, ID, password, etc.) to the MP3 purchase history server through the mobile communication network After verifying the authentication process by accessing, the purpose is to be able to download and use the MP3 previously purchased from the MP3 data service provided from the MP3 purchase history server.

In order to achieve the above object, the present invention provides a mobile communication terminal connected to an MP3 purchase history server through a mobile communication network to download and use MP3 data, and includes a plurality of numeric keys, text keys, call keys, and end keys. Keying function for dialing, menu selection, call termination, and command input, selecting an MP3 data service mode of the mobile communication terminal, and a user for connecting to the MP3 purchase history server when identification information is changed. As a function selection means for executing a function of storing, deleting, and reproducing the MP3 data desired from a list of MP3 data provided from the MP3 purchase history server, inputting a unique identifier of a user, inputting an authentication number for user confirmation, and the like. A key input unit; Provides an interface screen for displaying power usage, radio wave reception strength, the overall operating state of the mobile communication terminal, providing an MP3 data service, and displaying input / output of authentication information for confirmation of the user. A display unit; Executes a function of storing, deleting, and playing the wireless Internet browser for accessing the MP3 purchase history server and the MP3 data downloaded from the MP3 purchase history server, and accessing the MP3 purchase history server when identification information is changed; Built-in MP3 execution program for transmitting and receiving the unique identifier and authentication information for user confirmation, and the function of receiving and storing the MP data that is converted and transmitted to match the changed identification information from the MP3 purchase history server. Memory; And controlling data to be transmitted and received according to a predetermined communication protocol, controlling access to the MP3 purchase history server using the wireless Internet browser stored in the memory, and driving the MP3 execution program to execute the MP3 data service. It provides a mobile communication terminal for providing MP3 data when changing identification information, characterized in that it comprises a microprocessor for controlling to provide.

According to another object of the present invention, in the method for downloading MP3 data by accessing the MP3 purchase history server through a mobile communication network, (a) the MP3 execution program of the mobile communication terminal to replace the mobile communication terminal or telephone If the identification information is changed by changing the number, transmitting the unique identifier of the user to the MP3 purchase history server according to a user's command to access the MP3 purchase history server; (b) the MP3 execution program of the mobile communication terminal receiving an SMS including a generation authentication number for confirmation of the user from the MP3 purchase history server; (c) the MP3 execution program of the mobile communication terminal transmitting the transmission authentication number entered by the user after viewing the generated authentication number included in the SMS to the MP3 purchase history server; (d) determining, by the MP3 purchase history server, whether the authentication procedure of the user was successful by comparing the transmission authentication number transmitted from the mobile communication terminal with the generated authentication number generated and transmitted by the MP3 purchase terminal; (e) if it is determined that the authentication procedure for confirmation of the user has been successfully performed, the MP3 purchase history server converts the MP3 data selected by the user according to the replaced mobile communication terminal or the changed phone number. Transmitting by; And (f) updating, by the MP3 purchase history server, database information of the MP3 data. The MP3 purchase history server provides a download service of MP3 data when the identification information of the mobile communication terminal is changed.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a block diagram showing the configuration of a system for providing an MP3 data service for a mobile communication terminal according to a preferred embodiment of the present invention.

As shown in FIG. 1, a system for providing an MP3 data service for a mobile communication terminal 100 according to a preferred embodiment of the present invention includes a mobile communication terminal 100, a computer system 110, a mobile communication network 120, Internet 130, MP3 purchase history server 140, and the like.

The mobile communication terminal 100 according to the preferred embodiment of the present invention not only makes a phone call by wireless communication with the other party via the mobile communication network 120 but also accesses the wireless Internet by using the provided information retrieval function. The terminal can search. The mobile communication terminal 100 may be a PDA (Personal Digital Assistant), cellular phone, PCS (Personal Communication Service) phone, GSM (Global System for Mobile) phone, W-CDMA (Wideband CDMA) phone, CDMA-2000 phone, MBS ( Mobile Broadband System) phones and the like. Here, MBS phone refers to a mobile phone to be used in the fourth generation system currently being discussed. In addition, in order for the mobile communication terminal 100 to access the wireless Internet through a wireless Internet network and receive multimedia data, a browser capable of transmitting and receiving data with the wireless Internet using a predetermined protocol should be installed. These browsers include WAP browsers based on the Wireless Application Protocol (WAP), Microsoft Internet Explorer (MIE) based on HTML using the HTTP protocol, and Handheld Device Transport Protocol (HDTP) I-mode. , BREW (Binary Runtime Environment for Wireless), SK Telecom 'NATE' and the like, but is not limited thereto.

The mobile communication terminal 100 accesses the MP3 purchase history server 140 and downloads MP3 data using a wireless Internet browser embedded in the mobile communication terminal 100.

When the identification information is changed, such as the replacement of the mobile communication terminal 100 or the change of the phone number, the mobile communication terminal 100 according to the present invention uses the mobile communication to download MP3 data from the MP3 purchase history server 140 again. After receiving the SMS (Short Messaging Service) for the authentication number of the service provider, and inputs the received authentication number to the mobile communication terminal 100 to transmit to the MP3 purchase history server 140 to process the authentication process of the user.

Here, the change of the identification information means that the user replaces the mobile communication terminal 100 or changes the telephone number. The mobile communication terminal 100 provides an MP3 data service menu for storing, transmitting, deleting, and playing MP3 data downloaded from the MP3 purchase history server 140, and an application program capable of executing such a function. Is installed.

The computer system 110 may be a general personal computer (PC), a notebook computer, or the like, and may include a general modem, a public switched telephone network (PSTN) network, a cable modem and a wired broadcasting network, a LAN card and a LAN network, a LAN card, and an enterprise. You can connect to the external Internet via an intranet or the like.

In the embodiment of the present invention, when the identification information of the mobile communication terminal 100 is changed, the authentication procedure for checking the user inputs a unique identifier (resident registration number, ID, password, etc.) of the user to establish the mobile communication network 120. When accessing the MP3 purchase history server 140 through, the mobile communication terminal 100 receives the SMS for the authentication number from the MP3 purchase history server 140, the user inputs the authentication number to the mobile communication terminal 100 By transmitting to the MP3 purchase history server 140, the MP3 purchase history server 140 is to perform the authentication procedure.

As another example of the authentication process using the computer system 110, the MP3 purchase history server 140 via the Internet 130 by inputting the user's unique identifier (resident registration number, ID, password, etc.) in the computer system 110 ), The SMS for the authentication number is transmitted from the MP3 purchase history server 140 to the mobile communication terminal 100, and the user inputs the authentication number displayed on the mobile communication terminal 100 into the computer system 110. By doing this, the authentication procedure of the user can be processed.

When the authentication of the user is completed and the MP3 data is selected from the mobile communication terminal 100, the MP3 purchase history server 140 converts the MP3 data stored in the name of the user to match the changed identification information, and then the corresponding mobile communication. Transmission to the terminal 100.

The mobile communication network 120 is a conventional network for voice calls, that is, a base station (BS), a mobile telephone switching office (MTSO), a home location register (HLR), a network management system ( In addition to the NMS (Network Management System), and additional components such as WAP gateway that enables the transmission and reception of content for mobile communication, so that the user through the mobile communication terminal 100 MP3 purchase history server 140 to the MP3 data In the case of downloading, the corresponding MP3 data is transmitted to the user's mobile communication terminal 100.

The Internet 130 is a communication network that provides a connection path for the computer system 110 to access and transmit data to and from the MP3 purchase history server 140. The Internet 130 includes various services existing in the TCP / IP protocol and higher layers, that is, HTTP. (HyperText Transfer Protocol), File Transfer Protocol (FTP), Domain Name System (DNS), Simple Mail Transfer Protocol (SMTP), Simple Network Management Protocol (SNMP), Network File Service (NFS), and Network Information Service (NIS). It provides an open computer network structure.

MP3 purchase history server 140 is connected to the Internet 130 or mobile communication network 120, the user via the computer 130 or mobile communication terminal 100 via the Internet 130 or mobile communication network 120 In response to the request for information retrieval received from the mobile terminal, the information corresponding to the request is provided to the computer system 110 or the mobile communication terminal 100 via the Internet 130 or the mobile communication network 120. In addition, the MP3 purchase history server 140 stores the list of MP3 data purchased by the user and the expiration date as database information. If necessary, the MP3 purchase history server 140 may store / manage the MP3 data itself purchased by the user. In addition, the present invention provides an interface screen for providing an MP3 data service to the computer system 110 or the mobile communication terminal 100 connected to the MP3 purchase history server 140. Here, the database of the MP3 purchase history server 140 has a general data structure implemented in a storage space (hard disk or memory) of a computer system by using a database management program, and can freely search, delete, edit, and add data. It has a form of data storage that can be done.

The MP3 purchase history server 140 transmits MP3 data to the mobile communication terminal 100 or the computer system 110 at the request of the user, transmits and receives authentication information for confirmation of the user, and changes the identification information. A MP3 conversion program for retrieving MP3 data and converting and transmitting the MP3 data according to the changed identification information is stored.

2 is a block diagram illustrating an internal configuration of a mobile communication terminal which downloads and uses MP3 data from an MP3 purchase history server according to an exemplary embodiment of the present invention.

The mobile communication terminal 100 according to the preferred embodiment of the present invention includes a program memory 200, an internal memory 210, a mode state storage unit 220, a microprocessor 230, a key input unit 240, and a display unit ( 250, a digital signal processor 260, a baseband converter 270, a speaker 280, a microphone 290, an antenna 291, an RF signal processor 292, and the like.

The program memory 200 includes an operating system (OS) software having a real-time processing function for the operation of the mobile communication terminal 100 and call processing software for processing functions related to call processing. Is stored. In addition, the program memory 200 stores and executes the MP3 data downloaded from the MP3 purchase history server 140 and the wireless Internet browser that can access the MP3 purchase history server 140 and receive the MP3 data service. An MP3 execution program for displaying a list of MP3 data purchased and stored, and generating and transmitting an SMS for an authentication number for user authentication when the identification information is changed is stored. Here, the change of the identification information means that the user replaces the mobile communication terminal 100 or changes the telephone number. Since the MP3 data of the MP3 purchase history server 140 is encrypted using a unique number or a phone number of the mobile communication terminal 100 when the user purchases the MP3 data, the mobile communication terminal 100 may be replaced or the phone number may be changed. If you change it, you won't be able to use the MP3 data you've purchased before. Therefore, in order to use previously purchased MP3 data stored in the MP3 purchase history server 140, there must be an authentication procedure for user confirmation.

When the identification information is changed, in order to receive the MP3 data purchased before the remaining valid period from the MP3 purchase history server 140, the MP3 execution program provides an interface screen for using the MP3 data service, and the MP3 purchase history The server 140 receives a list of previously purchased MP3 data, downloads user-selected MP3 data, and plays, deletes, or stores MP3 data. In addition, the MP3 execution program accesses the MP3 purchase history server 140 via the mobile communication network 120 using a unique identifier (resident registration number, ID, password, etc.) of the mobile subscriber, connected MP3 purchase history server SMS 140 for the authentication number for the user's authentication is sent, and the received authentication number is input again and transmitted to the MP3 purchase history server 140 to perform the authentication process for the user's confirmation.

Meanwhile, the MP3 execution program may be mounted in the program memory 200 in the production stage of the mobile communication terminal, or may be downloaded and installed by accessing a mobile communication service provider server through a wireless Internet connection.

The internal memory 210 is a concept including a ROM, an EEPROM, a RAM, a flash memory, a volatile, a nonvolatile memory, and the like. Any one of the internal memory 210 may be used. It is mounted on a substrate. In general, an operating program and a system program of the microprocessor 230 are stored in the ROM region, and may be electrically erased or stored again as needed. In addition, the ROM stores variable and state information of a program generated in connection with driving various software such as an MP3 execution program installed in the program memory 200.

EEPROM (EEPROM) is a memory that can be electrically erased or re-stored, non-volatile memory in which data for storage, such as NAM (Number Assignment Module) parameters, telephone numbers, names, short messages are recorded.

In addition, the internal memory 210 typically serves as a data buffer when executing an operation program of the mobile communication terminal 100, and temporarily stores data input by the key input unit 240 or moves externally. Data such as text or image received by the communication terminal 100 and MP3 data downloaded from the MP3 purchase history server 140 according to an embodiment of the present invention are stored.                     

The mode state storage unit 220 stores the current operation mode of the mobile communication terminal 100 selected by the key input unit 240 as a state flag (0, 1, 2, ...), and the microprocessor ( 230 updates the state storage unit 220 by allocating a unique state flag for each mode to distinguish whether the mobile communication terminal 100 is a reception mode, an outgoing mode, a storage mode, or a call mode. do. In particular, the MP3 data service mode according to an embodiment of the present invention is stored as a status flag.

The microprocessor 230 controls the overall operation of the mobile communication terminal 100 so that the communication protocol is processed according to a predetermined protocol of transmission and reception data with reference to the state flag stored in the mode state storage unit 220. In particular, the microprocessor 230 controls the mobile communication terminal 100 to access the MP3 purchase history server 140 by using a wireless Internet browser, and if the MP3 data service mode is selected by the key input unit 240, the program memory The MP3 execution program stored in the 200 is driven to receive a list of MP3 data from the MP3 purchase history server 140, and selects and downloads the desired MP3 data, and controls the functions such as storing, deleting, and playing. . When the user replaces the mobile communication terminal 100 or changes the phone number, the microprocessor 230 inputs the user's unique identification number (resident registration number, ID, password, etc.) to the MP3 purchase history server 140. Access to the control, to retrieve the previously purchased MP3 data, receiving the SMS for the authentication number for authentication of the user from the MP3 purchase history server 140, and receives the received authentication number back to the mobile communication terminal 100 Input and control to transmit to MP3 purchase history server 140 performs a user authentication procedure.

To this end, the microprocessor 230 executes instructions for driving the MP3 execution program. When the MP3 data service mode is selected, the microprocessor 230 generates the function mode control signal and transmits it to the mode state storage unit 220 to transmit the mode state storage unit 220. ) Mode is updated.

The key input unit 240 includes a plurality of numeric keys, character keys, call keys, and end keys to provide a key selection function for dialing or menu selection, call termination, and command input. Accordingly, when the user selects the MP3 data service mode of the mobile communication terminal 100 by operating a numeric key, a function key, a cursor movement key, etc. included in the key input unit 240, and connects to the MP3 purchase history server 140. MP3 data service will be available. In addition, the key input unit 240 functions to receive the SMS for the authentication number from the MP3 purchase history server 140 and input the received authentication number using a numeric key or the like.

The display unit 250 displays the overall operating state of the mobile communication terminal 100 including the degree of use of power, the reception strength of radio waves, and the date and time. In addition, according to an embodiment of the present invention, the display unit 250 displays an interface screen for providing an MP3 data service and an input window for inputting an authentication number for authentication of a user.

The digital signal processor 260 (DSP: Digital Signal Processor (DSP)) is an audio data processing function that encodes or decodes audio data exchanged with the baseband converter 270. It is a digital signal processing processor that executes and executes an equalize function for noise reduction of multipath. In addition, the digital signal processor 260 receives the received message data RX DATA from the baseband converter 170.

The baseband converter 270 converts signals transmitted and received with the speaker 280, the microphone 290, and the RF signal processor 292 into baseband signals, and performs digital-to-analog conversion and analog-to-digital conversion processing. And so on. Accordingly, the baseband converter 270 converts the audio data received from the DSP 260 into an audio signal and outputs the audio signal to the speaker 280, or converts the audio signal input from the microphone 290 into audio data and converts the audio data into a DSP. 260).

In addition, the baseband converter 270 converts the transmission message data TX DATA input from the microprocessor 230 into a transmission message signal TXIQ and outputs it to the RF signal processor 292 or the RF signal processor 292. The received message signal RXIQ, which is inputted from the RXQ, is converted into the received message data RX DATA and output to the DSP 260. The baseband converter 270 automatically controls a gain for the power POWER of the RF signal processor 292 (AGC).

The speaker 280 outputs an audio signal output from the baseband converter 270 as an audible sound, and converts a microphone 290 voice input into an audio signal.

The antenna 291 transmits an RF signal to the air, or transmits an RF signal received from the air to the RF signal processor 292.

The RF signal processor 292 converts a transmission message signal into a radio frequency (RF) signal and outputs it to the antenna 291, or converts an RF signal applied from the antenna 291 into a reception message signal RXIQ. Output to the baseband converter 270.

3 is a flowchart illustrating a method of providing a download service of MP3 data when changing identification information of a mobile communication terminal according to an exemplary embodiment of the present invention.

When a user purchases MP3 data using a wireless mobile communication network, the MP3 data is encrypted using a unique number or a phone number of the mobile communication terminal 100, and when the user reproduces it in the mobile communication terminal 100, Enter the mobile terminal unique number or phone number to verify. Therefore, when the user replaces the mobile communication terminal 100 or changes the phone number, the purchased MP3 data cannot be used even if the valid period remains (S300). After the user replaces the mobile communication terminal 100 or changes the phone number, the MP3 purchase history server 140 through the mobile communication network 120 using the user's unique identifier (resident registration number, ID, password, etc.) (S302). The user searches for desired MP3 data among previously purchased MP3 data in the connected MP3 purchase history server 140. MP3 purchase history server 140 transmits the SMS for the authentication number for the confirmation of the mobile terminal user to the mobile communication terminal (100) (S304). When the SMS for the authentication number is transmitted to the mobile communication terminal 100, the user inputs the authentication number to the mobile communication terminal 100 again and transmits the authentication number to the MP3 purchase history server 140 (S306). The MP3 purchase history server 140 checks the authentication procedure of the mobile communication terminal user by comparing the authentication number transmitted by the user with the mobile communication service subscriber information (S308). That is, the authentication process for checking whether the user's mobile communication terminal 100 and the phone number and identity match. When the authentication process is successful in the MP3 purchase history server 140, the MP3 purchase history server 140 converts the previously purchased MP3 data to match the mobile terminal 100 or the changed phone number information replaced by the user. It transmits to the mobile communication terminal, and updates the database in which the MP3 data of the MP3 purchase history server 140 is stored (S310 and S312).

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, according to the present invention, when the user replaces the mobile communication terminal or changes the phone number, it is possible to reuse the MP3 data remaining in validity period by solving the problem of duplication of previously purchased MP3 data. It works.

Claims (9)

In the mobile communication terminal to access the MP3 purchase history server through the mobile communication network to download and use the MP3 data, It provides a number of key keys for dialing, menu selection, call termination, and command input with a number of keys, text keys, call keys, and end keys, and selects the MP3 data service mode of the mobile communication terminal. When the identification information is changed, the user inputs a unique identifier of a user for accessing the MP3 purchase history server, an authentication number for user confirmation, and the MP3 data desired from among the list of MP3 data provided from the MP3 purchase history server. A key input section as function selection means for executing selection, storage, deletion, and playback functions; Provides an interface screen for displaying power usage, radio wave reception strength, the overall operating state of the mobile communication terminal, providing an MP3 data service, and displaying input / output of authentication information for confirmation of the user. A display unit; Executes a function of storing, deleting, and playing the wireless Internet browser for accessing the MP3 purchase history server and the MP3 data downloaded from the MP3 purchase history server, and accessing the MP3 purchase history server when identification information is changed; Built-in MP3 execution program for transmitting and receiving the unique identifier and authentication information for user confirmation, and the function of receiving and storing the MP data converted and transmitted to match the changed identification information from the MP3 purchase history server. Memory; And Control transmission and reception of data according to a predetermined communication protocol, control access to the MP3 purchase history server using the wireless Internet browser stored in the memory, and drive the MP3 execution program to operate the MP3 data service. Microprocessor controlled to provide A mobile communication terminal for providing MP3 data when the identification information is changed, characterized in that it comprises a. The method of claim 1, The identification information change is a mobile communication terminal for providing MP3 data when changing the identification information, characterized in that the user replaces the mobile communication terminal or change the telephone number. The method of claim 1, The unique identifier is a mobile communication terminal for providing MP3 data when changing the identification information, characterized in that one of the user's social security number, ID, password. The method of claim 1, The MP3 purchase history server stores the list of MP3 data purchased by the user and the expiration date as database information, and transmits the MP3 data to the mobile communication terminal or the user's computer system at the request of the user. When the identification information is changed, the MP3 conversion program for transmitting and receiving the unique identifier and the authentication information for confirmation of the user, and converts and transmits the MP3 data selected by the user according to the converted identification information is stored A mobile communication terminal for providing MP3 data at the time of changing the identification information, characterized in that. The method of claim 1, wherein the mobile communication terminal. Receiving the SMS including the authentication number for the user's confirmation from the MP3 purchase history server, and inputting the received authentication number again to the MP3 purchase history server to perform the authentication procedure of the user A mobile communication terminal providing MP3 data when identification information is changed. In the method of downloading the MP3 data by connecting to the MP3 purchase history server through a mobile communication network, (a) The MP3 execution program of the mobile communication terminal transmits the unique identifier of the user to the MP3 purchase history server according to a user's command when identification information is changed by replacing the mobile communication terminal or changing a phone number. Accessing a purchase history server; (b) the MP3 execution program of the mobile communication terminal receiving an SMS including a generation authentication number for confirmation of the user from the MP3 purchase history server; (c) the MP3 execution program of the mobile communication terminal transmitting the transmission authentication number entered by the user after viewing the generated authentication number included in the SMS to the MP3 purchase history server; (d) determining, by the MP3 purchase history server, whether the authentication procedure of the user was successful by comparing the transmission authentication number transmitted from the mobile communication terminal with the generated authentication number generated and transmitted by the MP3 purchase terminal; (e) if it is determined that the authentication procedure for confirmation of the user has been successfully performed, the MP3 purchase history server converts the MP3 data selected by the user according to the replaced mobile communication terminal or the changed phone number. Transmitting by; And (f) updating, by the MP3 purchase history server, database information of the MP3 data; And providing a download service of MP3 data when identification information of the mobile communication terminal is changed. The method of claim 6, And the unique identifier is one or more of a social security number, an ID, and a password of the user. The method of claim 6, The SMS including the generated authentication number is transmitted through the mobile communication terminal, and the inputted received authentication number is transmitted again to the MP3 purchase history server through a separate computer system. A method of providing a download service of MP3 data when changing identification information of a terminal. The method of claim 6, The MP3 execution program of the mobile communication terminal displays a list of MP3 data stored in the mobile communication terminal or the MP3 purchase history server, and transmits information on the MP3 data selected by the user to the MP3 purchase history server. And providing the download service of the MP3 data when the identification information of the mobile communication terminal is changed.

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