KR20060117769A - Method and apparatus for handing over the right of using on using drm - Google Patents

Abstract

A method and a device for a use right transfer service based on DRM(Digital Rights Management) are provided to transfer a use right stored in a use right box of a sender terminal to a receiver terminal by using the DRM-based communication network. A use right receiver receives use right transfer information from the sender terminal through a DRM server. An authentication information receiver receives authentication information from the DRM server based on the use right transfer information. A transfer information receiver receives transfer processing information from the DRM server based on the use right transfer information. A transfer processor transfers the use right based on the transfer processing information. A transmitter transmits a transfer text message to the receiver terminal based on the transferred use right. A callback signal receiver receives a callback signal from a mobile terminal. A use right transmitter transmits the transferred use right to the mobile terminal by using a channel formed according to the callback signal.

Description

DRM-based usage rights transfer service method and device {Method and Apparatus for handing over the right of using on using DRM}

1 is a view schematically showing the configuration of a use right transfer service using a DRM-based transfer service management server according to an embodiment of the present invention.

2 is a diagram illustrating a configuration of a mobile terminal to which a DRM module is applied for providing a use right transfer service according to an embodiment of the present invention.

3 is a block diagram showing a transfer service management server according to an embodiment of the present invention.

Figure 4 is a module configuration diagram of the transfer service management server according to an embodiment of the present invention.

Figure 5 is a flow chart illustrating a procedure for the use of the transfer of the user right transfer authority terminal according to an embodiment of the present invention.

6 is a signal flow diagram illustrating a usage right transfer service procedure using the transfer service management server according to an exemplary embodiment of the present invention.

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

101... Transferor terminal 103... Assignee terminal

105... Network 107... DRM server

109... Transfer Service Management Server

The present invention relates to a DRM based usage right transfer service method and apparatus.

In recent years, with the development of the Internet, various contents, that is, digitalization of materials such as still images, moving pictures, and voices, which are necessary for writing multimedia software, can easily obtain desired materials compared to the past. There are many opportunities.

However, since the easy copying and distribution of contents accelerates the size of contents providers and contents producers, the demand and development of contents protection technology is increasing rapidly. In this regard, Digital Rights Management (DRM), which protects, secures, and manages digital content, that is, prevents the illegal use of digital content in circulation, and is concerned with the use of protected content. Technologies are developed in the areas of technology and services that continue to protect and manage the rights and interests of copyright holders and licensees. Digital copyright protection technologies for the protection of such digital content and free / paid services include Digital Rights Management (DRM) technology, Digital Watermarking, Digital Object Identifier (DOI), and Interoperability of Data. in E-Commerce System) offers its own technologies and solutions. In detail, the digital watermarking technology is widely used for copyright verification, and is a technology for protecting copyright by inserting information related to copyright in content. However, such digital watermarking technology has a problem in that content cannot be protected when digital copyright protection technology intercepts and reproduces or reproduces playback on a computer or other portable device (PD). Therefore, there is a demand for a technology that satisfies the needs of content providers and producers who want to protect their ownership and copyrights more completely. In addition, DRM technology, which recently appeared, refers to a technology for protecting copyright of digital content and distributing and managing copyright and content. In detail, it refers to a technology for preventing illegal distribution and duplication of multimedia contents, allowing only legitimate users to use the contents, and managing copyrights of multimedia contents through user management and billing services. The functions of DRM can be divided into the protection of digital contents, the management of usage rules, and the management of billing system, and different companies with DRM technology are developing technologies using different methods.

It is an object of the present invention to provide a method and apparatus for transferring usage rights stored in a usage right box of a transferee terminal to a transferee terminal using a DRM-based communication network.

Another object of the present invention is to provide a method and apparatus for transferring a use right using a transfer service management server and transmitting the transfer right to a transferee terminal.

Another object of the present invention is to provide a method and apparatus for transmitting the resultant information transferred from the transfer service management server to the transferer terminal to delete the use authority of the transfered transferer terminal.

In order to achieve the above object, according to an aspect of the present invention, in the method for providing a service transfer authority usage service performed in the transfer service management server coupled with the transferee terminal, the DRM server and at least one assignee terminal through a communication network; Receiving use authority transfer information from the assignee terminal through the DRM server, receiving authentication information from the DRM server based on the use authority transfer information, and transfer processing information from the DRM server based on the use authority transfer information Receiving, the transfer of the usage rights based on the transfer processing information, Transmitting a transfer text message to the transferee terminal based on the transfered usage rights, Receiving a callback access signal from the mobile terminal Step, using the channel formed by the callback connection signal And transmitting the transfer usage right to the mobile terminal and transmitting the transfer processing result information to the transferer terminal based on the transfer processing signal, wherein the transfer processing result information deletes the transferred usage right. The method may provide a method for providing a use right transfer service.

In a preferred embodiment, the assignee terminal may select a use right to transfer and request transfer of use rights. The use authority transfer information may include the use authority information selected by the assignee terminal and an identifier of the assignee terminal. In addition, the method may further include the step of including a function of confirming the use authority of the transferred content based on the authentication information. The method may further include including a function of confirming DRM phone information of the assignee terminal based on the authentication information. The authentication information may be information on a mobile terminal including a DRM module based on an OMA 2.0 based encryption scheme. In addition, the DRM server may be characterized by using an Open Mobile Alliance (OMA) 2.0 based encryption scheme. In addition, the step of transmitting the transfer text message to the assignee terminal may be characterized in that performed by the DRM server.

According to another aspect of the present invention, in the transfer service management server coupled with the assignee terminal, the DRM server and at least one assignee terminal through a communication network and providing a use right transfer service, transfer of the use right from the assignee terminal through the DRM server Means for receiving information, means for receiving authentication information from a DRM server based on the use right transfer information, means for receiving transfer processing information from a DRM server based on the use right transfer information, based on the transfer processing information Means for transferring the usage right, means for transmitting a transfer text message to the assignee terminal based on the transferred usage right, means for receiving a callback access signal from the mobile terminal, and using a channel formed by the callback access signal To transfer the transfer right to the mobile terminal And means for transmitting the transfer processing result information to the assignee terminal based on the transfer processing signal, wherein the transfer processing result information can provide the transfer service management server, wherein the transfer authority is deleted. have.

According to another aspect of the present invention, a transfer service management server, which is coupled with a transferor terminal, a DRM server, and at least one assignee terminal through a communication network and provides a use right transfer service, includes a memory in which a program is stored, And a processor configured to execute the program in combination, wherein the processor receives, by the program, use authority transfer information from the assignee terminal through a DRM server, authentication information from a DRM server based on the use authority transfer information. Receiving step, Receiving the transfer processing information from the DRM server based on the use authority transfer information, Transferring the use authority based on the transfer processing information, Transfer character based on the transferred use authority Sending a message to the assignee terminal; Receiving a callback access signal from a terminal, transmitting a transfer usage right to the mobile terminal using a channel formed by the callback access signal, and transmitting transfer processing result information to the assignee terminal based on the transfer processing signal In addition, the transfer processing result information may be characterized in that for performing the deletion of the transfer authority.

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

1 is a diagram schematically illustrating a configuration of a use authority transfer service using a DRM-based transfer service management server according to an exemplary embodiment of the present invention.

Referring to FIG. 1, a usage right transfer service according to the present invention includes a transferor terminal 101, a transferer terminal 103, a communication network 105, a DRM server 107, and a transfer service management server 109.

The assignee terminal 101 and the assignee terminal 103 are mobile terminals for performing mobile communication via the communication network 105, and are equipped with a mobile platform including a DRM module and store a use right according to the present invention. Include. In addition, the assignee terminal 101 and the assignee terminal 103 include a function of sending and receiving a message. The assignee terminal 103 communicates with the transfer service management server 109 through a wired or wireless communication network, and receives a message from the transfer service management server 109 to output the message in the form of a bulletin board in a standby mode. Includes features In addition, the assignor terminal 101 further includes a function of receiving the transfer processing result information from the transfer service management server and deleting the use authority of the assignor terminal. The assignee terminal 101 and the assignee terminal 103 may include a mobile phone PDA phone, a smart phone, a notebook computer, a tablet PC, and the like.

The DRM server 107 is connected to the communication network 105 and is connected to the transfer service management server 109 for the transfer of the use right according to the present invention. When the transfer service management server 109 transfers usage rights to the assignee terminal 103, the DRM server 107 encrypts the content and interprets the encrypted content (right object: RO). It is responsible for creating). In addition, the DRM server 107 includes a function of transmitting a transfer text message to the assignee terminal 103 after the transfer of the corresponding use right. In particular, in the present invention, the encryption scheme provided by the DRM server 107 may be based on OMA (Open Mobile Alliance) 2.0. The OMA (Open Mobile Alliance) 2.0 type of encryption is one of the world's standards among the content encryption method, so a person having ordinary knowledge in the field related to the encryption method can easily know the detailed description thereof will be omitted.

The transfer service management server 109 includes a function of receiving the use right transfer information from the transferee terminal 101 through the DRM server 107 and transferring the use right to the transferee terminal 103. The transfer service management server 109 includes a function of receiving transfer processing information from the DRM server 107 to transfer the use right to the transferee terminal 103. Here, the transfer processing information includes a content ID, the assignee's user contract number, the assignee's user contract number, and a purchase identification value for distinguishing duplicate purchases. In addition, the transfer service management server 109 further includes a function of transmitting a transfer text message to the transferee terminal 103 and receiving a callback connection from the transferee terminal 103 receiving the transfer text message and transferring the transferred usage right. The transfer service management server 109 includes a function of transmitting the transfer processing result information to the transferer terminal 101 through the DRM server 107 in order to delete the transfer right of the transfer.

A method of providing a service according to the present invention will be described with reference to the above configuration as follows.

First, the transferor terminal 101 selects a use right to be transferred from the use right storage box in the transfer terminal 101 to request the use right transfer. The transferor terminal 101 requesting the transfer of the use right transfers the use right transfer information to the transfer service management server 109 through the DRM server 107. The transfer service management server 109 receiving the use right transfer information performs the authority to check the transfer content use authority using the DRM server 107, check the DRM phone information of the transferee terminal 103, and transfer the authority of the use authority. The transfer text message is transmitted to the terminal 103. The assignee terminal 103 receiving the transfer text message may call the transfer service management server 109 to receive the transfer usage right and complete the use authority transfer service. The transfer service management server 109 transmitting the transfer use right transmits the transfer processing result information to the transferee terminal 103 through the DRM server 107. At this time, the transfer right from the transfer processing result information is transferred from the transfer terminal terminal 101 having received the transfer processing result information.

2 is a diagram illustrating a configuration of a mobile terminal to which a DRM module is applied for providing a use right transfer service according to an embodiment of the present invention.

Referring to FIG. 2, the terminal platform includes a memory 200, an OEM HAL I / O area 210, a native area 220, a WIPI area 230, and a DRM module 240.

The terminal platform includes the functions of the existing terminal platform as it is, including GVM, SK-VM, KVM, MAP, BREW, and WIPI. In addition, the terminal platform further includes a function of receiving a right of use by callback access to the transfer service management server when receiving the transfer text message according to the present invention.

The memory 200 stores personal certificates, usage rights, DRM contents, general contents, and the like, and the information is usually stored in an included ROM area and can be erased as necessary. Electrically erasable ROMs include EEPROM, flash memory, and the like. The memory 200 also includes a RAM that temporarily stores data generated during execution of various operation programs. In addition, the memory 200 further includes a function of storing a message received from the content purchase service management server.

The OEM HAL I / O area 210 includes a WIPI HAL API and is connected to the native area 220 and the WIPI area 230. The WIPI HAL API is a collection of WIPI HAL APIs supported by the platform used by the application developer. In addition, the WIPI HAL API includes a C API and a Java API to provide convenience for program developers.

The native area 220 is connected to the content library 222, the content player 224, and the KUN Browser 226. The content storage box 222 performs a user interface function of the mobile terminal for providing content information. The content player 224 performs a software function on the mobile terminal for executing the content. The KUN Browser 226 performs a web browser function that supports general wired pages as well as existing wireless pages.

The WIPI region 230 includes a WIPI code and an extended WIPI and is connected to the DRM module 240.

The DRM module 240 includes a usage rights library 231, a personal certificate library 232, an application performance management (233), a DRM D / L Agent 234, a DRM content 235, a DRM application 236, and DRM Agent 237 is included.

The usage rights library 231 serves as a user interface for managing usage rights. Here, the usage right may have multiple usage rights in one content, and is a key to solve the encrypted content. In addition, the usage right is inputted with information such as a period and a date during which the content can be used. The personal certificate library 232 performs a function of requesting a certificate from the user to the DRM server and downloading the personal certificate to the terminal. Here the personal certificate is only downloaded once. The personal certificate further includes the ability to encrypt the content certificate and to unencrypt the already encrypted usage rights encryption. The APM 233 downloads the WIPI content in association with the DRM application 235 and the DRM content 236 as an application for managing the mobile terminal. The DRM modules are all executed in RAM by the APM 233 connected to the WIPI during terminal operation. The DRM Agent 237 is an application mounted on the mobile terminal and performs a DRM related task. The DRM Agent 237 performs the function of checking the personal certificate to determine whether to execute the DRM content in conjunction with the DRM D / L Agent 234. In addition, the DRM Agent 237 includes an XML Parser and an Encryption Library, and can be wirelessly upgraded using the WIPI platform. In addition, both the DRM D / L Agent 234 and the DRM Agent 237 can be written as a DLL for WIPI.

The configuration of the user terminal to which the DRM module is applied consists of configuring the KUN Browser in the OEM to implement various services, including the DRM encryption module on the WIPI for WIPI applications, and configuring the KUN Browser in the OEM. In the form of including DRM encryption module in native for WIPI application in user terminal, configuring KUN Browser in OEM and incorporating DRM encryption module in WIPI for WIPI application and OEM content player in user terminal. KUN Browser in the user terminal and DRM encryption module included in Native for WIPI application and OEM content player in the user terminal, KUN Browser in the WIPI configuration and DRM encryption module in the WIPI for WIPI application in the user terminal. Build KUN Browser on Form and WIPI And it can implement a form of a function module in the DRM encryption modules Native as WIPI eopeulrikeyisyeonreul destination at the user terminal.

3 is a block diagram showing a transfer service management server according to an embodiment of the present invention.

Referring to FIG. 3, the transfer service management server may include a memory system 320, at least one central processing unit (CPU) 310, an input device 330, and a communication device coupled to the memory system 320 to perform high-speed operation. 340 may be included.

The central processing unit 310 includes an Arithmetic Logic Unit (ALU) 312 for performing calculations, a register 314 for temporary storage of data and instructions, and a controller 316 for controlling the operation of the transfer service management server. do. The central processing unit 310 includes Digital, Alpha, MIPS Technology, NEC, IDT, Siemens, etc. MIPS, Intel and Cyrix, AMD, and Nexgen. It could be a processor with a variety of architectures, such as the company's x86 and IBM's and Powerola's PowerPC.

The memory system 320 generally includes a high speed main memory 322, a type of storage medium such as random access memory (RAM) and read only memory (ROM), and a floppy disk, a hard disk, a tape, a CD-ROM, a flash memory, and the like. Auxiliary memory 324 in the form of a long-term storage medium and a device for storing data using electrical, magnetic, optical or other storage media. In addition, the main memory 322 may include a video display memory for outputting an image through the display device.

In addition, the input device 330 includes a keyboard, a mouse, and the like. The mouse may include, for example, a physical transducer such as a touch screen or a microphone. The communication device 340 includes a communication interface for communicating with a DRM server and a mobile terminal.

4 is a module configuration diagram of the transfer service management server according to an embodiment of the present invention.

Referring to FIG. 4, the transfer service management server may transmit / receive a transmission / reception processing module 432 for processing wired / wireless communication with the DRM server and the mobile terminal, and use the transfer contents through the DRM server when receiving the use authority transfer information from the transferee terminal. User rights management module 434 to check the authority and confirm that the transferee terminal is a DRM phone, the transfer processing module 436 to transfer the use authority using the DRM server and the user terminal for callback access to the transfer service management server Message generation module 438 for generating a short message to send may be included. Looking at the overall configuration of the transfer service management server according to an embodiment of the present invention through such an application module as follows.

The transfer service management server can use various operating systems (OS) as the OS of the system. The OS provides a high level command to an application program interface (API) 400 to control the operation of each application module 430.

The transfer service management server includes a high level command processor 410 for identifying each corresponding application module 430 according to a high level command provided from the API 400, decoding the high level command, and providing the decoded high level command to a corresponding place. do. The application module controller 420 controls the operation of the application module 430 according to the command provided from the high level command processor 410. That is, the high level command processing unit 410 identifies whether there is an application module 430 corresponding thereto according to the high level command provided through the API 400, and corresponds to the case where the corresponding application module 430 exists. Decoded by a command that can be recognized by the application module 430 is transmitted to the corresponding mapping unit or controls the transmission of the message. Here, the application module 430 includes a transmission / reception processing module 432, an authentication processing module 434, a content management module 436, and a message generating module 438. The application module controller 420 includes mapping units 421, 423, 425, and 427 and interface units 422, 424, 426, and 428 for each application module, respectively.

The transmission / reception processing module mapping unit 421 may receive a high-level command for performing wired / wireless communication with the content providing server or the user terminal from the high level command processing unit 410, and may process the transmission / reception processing module 432. Maps to a device level command and provides it to the transmit / receive processing module 432 via the transmit / receive processing module interface 422. In addition, the transmission and reception processing module 432 may include a physical transmission interface for data transmission and reception with the content providing server as needed. In this case, the physical transport interface includes a communication interface such as SS7 voice network interworking interface or TCP / IP network interworking interface.

When the usage right management module mapping unit 423 receives the usage right transfer information from the transferee terminal, the usage right management module mapping unit 423 confirms the use authority of the transfer content through the DRM server and confirms that the transferee terminal is the DRM phone. The usage right management module mapping unit 423 includes a function of storing usage authority transfer information of a user and managing charging information. That is, the usage right management module mapping unit 423 receives a high level command for storing and outputting usage authority transfer information from the high level command processing unit 410, so that the device management module 434 can recognize the device level. Command, and provides it to the permission management module 434 through the permission management module interface 424.

The transfer processing module mapping unit 425 transfers the use authority using the DRM server. That is, the transfer processing module mapping unit 425 may receive a high level command for processing the usage authority transfer information received from the user terminal by the high level command processing unit 410, and may be recognized by the transfer processing module 436. Maps to a level command and provides it to the transfer processing module 436 via the transfer processing module interface 426.

The message generating module mapping unit 427 is a part for generating a short message to be transmitted to the user terminal for callback access to the transfer service management server. That is, the message generating module mapping unit 427 receives a high level command for generating a short message from the high level command processing unit 410, maps it to a device level command that the message generating module 438 can recognize, and then maps it to a device level command. The message generating module 438 is provided to the message generating module 438 through the message generating module interface 428.

FIG. 5 is a flowchart illustrating a procedure of a use authority transfer service performed by a assignor terminal according to an exemplary embodiment of the present invention.

Referring to FIG. 5, first, the assignee terminal executes the usage right locker using the software in the terminal (step 501). The assignee terminal selects a use right to be transferred from the use right box in the assigning terminal to request the use right transfer (step 503). When the transferee terminal requests the transfer of the selected usage right, the transferee terminal inputs the telephone number of the transferee terminal and transmits the use authority transfer information to the transfer service management server through the DRM server (step 505). The usage right transfer information includes the selected usage right information and the telephone number information of the assignee terminal. Thereafter, the assignee terminal receives transfer processing result information on the use authority transfer information from the transfer service management server through the DRM server (step 507). In the assignee terminal having received the transfer result information, the transfer of the use right transferred from the transfer result information is deleted (step 509). If the assignee terminal does not receive the transfer process result information, the transfer returns to step 505.

6 is a signal flow diagram illustrating a usage right transfer service procedure using the transfer service management server according to an exemplary embodiment of the present invention.

Referring to FIG. 6, first, the assignee terminal selects a use right to be transferred from the use right locker in the assigning terminal to request the use right transfer (step 601). The assignee terminal requesting the transfer of the use right transfers the use right transfer information to the transfer service management server through the DRM server (step 603 and step 605). The usage right transfer information includes the selected usage right information and the telephone number information of the assignee terminal. Receiving the use right transfer information, the transfer service management server requests the authentication to the DRM server to check the content use right information to be transferred and the DRM phone information of the transferee terminal and receives the authentication information (step 607, step 609). . Receiving the authentication information, the transfer service management server verifies the authority to use the transfer content based on the authentication information (step 611). In addition, the transfer service management service server confirms that the assignee terminal is a DRM phone by using the authentication information (step 613). After the confirmation process, the transfer service management server requests transfer to the DRM server and receives transfer information from the DRM server (step 615 and step 617). Thereafter, the transfer service management server transfers the usage right by using the received transfer processing information (step 619). Here, the transfer process transfers the use right by using the assignee's user contract number, the assignee's user contract number, the content ID, and the purchase identification value that can distinguish the duplicate purchase. The transfer service management server that transfers the usage right transmits the transfer text message to the transferee terminal (step 621). Here, the transfer service management server may transmit the transfer text message through the DRM server. The assignee terminal receiving the transfer text message calls back to the transfer service management server (step 623), and receives the transfer usage right from the transfer service management server (step 625). The assignee terminal receives the transferred use right from the transfer service management server to complete the use right transfer service (step 627). The transfer service management server transmits the transferred use right to the transferee terminal and then transmits the transfer processing result information to the transferer terminal through the DRM server (step 629 and step 631). In the assignee terminal that has received the transfer processing result information, the use right transferred from the transfer processing result information is deleted (step 633).

The present invention is not limited to the above embodiments, and many variations are possible by those skilled in the art within the spirit of the present invention.

According to the present invention, it is possible to provide a method and apparatus for transferring a use right stored in a use right box of a assignee terminal to a assignee terminal using a DRM-based communication network.

According to the present invention can provide a method and apparatus for using the transfer service management server to transfer the transfer of the use right to the transferee terminal.

According to the present invention can provide a method and apparatus for transmitting the result information transferred from the transfer service management server to the transferer terminal to delete the use authority of the transferee terminal.

Claims (10)

In the method for providing a use rights transfer service performed by the transfer service management server coupled with the transferee terminal, the DRM server and at least one transferor terminal through a communication network, Receiving use authority transfer information from the assignee terminal through a DRM server; Receiving authentication information from a DRM server based on the use authority transfer information; Receiving transfer processing information from a DRM server based on the use right transfer information; Transferring a usage right based on the transfer processing information; Transmitting a transfer text message to a transferee terminal based on the transferred use right; Receiving a callback access signal from the mobile terminal; Transmitting a transfer usage right to the mobile terminal using a channel formed by the callback access signal; And And transmitting the transfer processing result information to the assignee terminal based on the transfer processing signal. The transfer processing result information is to delete the transferred use right Method of providing a transfer of rights, characterized in that. The method of claim 1, The assignee terminal selects a use right to transfer and requests the transfer of use right Method of providing a transfer of rights, characterized in that. The method of claim 1, The use authority transfer information includes the use authority information selected by the assignee terminal and the identifier of the assignee terminal. Method of providing a transfer of rights, characterized in that. The method of claim 1, Confirming the use rights of the transferred content through the DRM server based on the authentication information; Containing more Method of providing a transfer of rights, characterized in that. The method of claim 1, Including the function of checking the DRM phone information of the assignee terminal based on the authentication information; Containing more Method of providing a transfer of rights, characterized in that. The method of claim 1, The authentication information is information of a mobile terminal including a DRM module based on an OMA 2.0 based encryption scheme. Method of providing a transfer of rights, characterized in that. The method of claim 1, The DRM server uses an encryption scheme based on OMA (Open Mobile Alliance) 2.0. Method of providing a transfer of rights, characterized in that. The method of claim 1, The step of transmitting the transfer text message to the assignee terminal is performed by a DRM server Method of providing a transfer of rights, characterized in that. A transfer service management server coupled with a transferor terminal, a DRM server, and at least one assignee terminal through a communication network and providing a use right transfer service, Means for receiving use authority transfer information from the assignee terminal via a DRM server; Means for receiving authentication information from a DRM server based on the usage right transfer information; Means for receiving transfer processing information from a DRM server based on the use right transfer information; Means for transferring a usage right based on the transfer processing information; Means for transmitting a transfer text message to a transferee terminal based on the transferred use right; Means for receiving a callback connection signal from the mobile terminal; Means for transmitting a transfer usage right to the mobile terminal using a channel formed by the callback connection signal; And Means for transmitting the transfer processing result information to the assignee terminal based on the transfer processing signal, The transfer processing result information is to delete the transferred use right Transfer service management server, characterized in that. A transfer service management server coupled with a transferor terminal, a DRM server, and at least one assignee terminal through a communication network and providing a use right transfer service, A memory in which a program is stored; A processor coupled to the memory to execute the program; The processor by the program, Receiving use authority transfer information from the assignee terminal through a DRM server; Receiving authentication information from a DRM server based on the use authority transfer information; Receiving transfer processing information from a DRM server based on the use right transfer information; Transferring a usage right based on the transfer processing information; Transmitting a transfer text message to a transferee terminal based on the transferred use right; Receiving a callback access signal from the mobile terminal; Transmitting a transfer usage right to the mobile terminal using a channel formed by the callback access signal; And And transmitting the transfer processing result information to the assignee terminal based on the transfer processing signal. The transfer processing result information is to delete the transferred use right System for running.

Images