KR100793283B1 - Method and System for Reproducing Multimedia Content Stored in Mobile Communication Terminal in Gray Area - Google Patents

Abstract

The present invention relates to a system and method for providing reproduction of a multimedia multimedia content part of a DDRM stored in a mobile communication terminal in an area where real time is not available.

The present invention provides a microprocessor for controlling the overall operation of voice transmission and reception of data, and performing control related to encrypted multimedia contents and authorization objects, and storing the encrypted multimedia contents and authorization objects and including the digital rights manager. It includes a program storage unit that stores an agent (Digital Rights Management Agent, hereinafter referred to as 'DRM Agent'). It is used to input a short message and memory that stores basic programs necessary for driving a mobile communication terminal. The actual time can be obtained from a mobile communication terminal including a key input unit having a function key button, a display unit displaying an operation state of the mobile communication terminal on a screen, a microprocessor, a memory, a key input unit, and a display unit. Claims [1] A method of providing multimedia content stored in a mobile terminal in a non-existent region, the method comprising the steps of: (a) transmitting a multimedia content and an authority object encrypted by an authority issuing server at the request of the mobile terminal to the mobile terminal; ; (b) retrieving an authority object and storing and driving the DRM agent in a program storage unit, wherein the DRM agent checks whether the mobile communication terminal exists in the service area; (c) requesting the microprocessor to update the actual time information (Auth-Time) every predetermined time when it is determined in step (b) that the mobile communication terminal exists in the service area; And (d) if it is determined in step (b) that the mobile communication terminal does not exist in the service area, start a count program supported by the DRM agent to generate current time information, and finally, while the mobile terminal is present in the service area. A time limit of the DRM stored in the mobile communication terminal in an area where real time is not available, comprising updating the real time information by adding current time information to the final real time information based on the updated final real time information. A method of providing playback of multimedia content is provided.

According to the present invention, a digital rights manager agent (hereinafter referred to as a "DRM agent") is transmitted from a rights issuing server for issuing rights to multimedia contents to a mobile communication terminal, and the DRM agent transmitted to the mobile communication terminal. Retrieves the authentication information and the authentication period of the authorization object, and if the mobile communication terminal exists in the shadowed area or the unserviceable area, the multimedia content is played by executing the count program supported by the DRM agent. Even if a mobile communication terminal exists in an unserviceable area or a shadow area, the mobile communication service provider has the effect of creating new added value by activating a content provider.

Mobile communication terminal, multimedia contents, DRM, authentication time

Description

System and method for providing playback of DDR limited-time multimedia content stored in a mobile communication terminal in an area where no real time is available {Method and System for Reproducing Multimedia Content Stored in Mobile Communication Terminal in Gray Area}

1 is a diagram schematically illustrating a system for providing reproduction of a DDR M multimedia part multimedia content stored in a mobile communication terminal in an area where real time is not available according to a preferred embodiment of the present invention;

FIG. 2 is a schematic diagram illustrating an internal structure of a mobile communication terminal providing reproduction of a multimedia content of a DDRM limited period stored in a mobile communication terminal in an area where real time is not available according to a preferred embodiment of the present invention; FIG.

FIG. 3 is a flowchart illustrating a process of providing reproduction of a DDR M multimedia part multimedia content stored in a mobile communication terminal in an area where real time is not available according to an exemplary embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

100: mobile communication terminal 110: mobile communication network

112: wireless base station 114: mobile communication switching center

116: data core network 120: short message service center

130: Authorization Server 132: Authorization Database

140: Inter-Working Function (IWF) 150: Gateway

160: Internet 170: multimedia content server

180: content issuing server 210: microprocessor

220: memory 230: program storage unit

240: mode state storage unit 250: key input unit

260: display unit 270: digital signal processing unit

280: baseband converter 282: speaker

284: microphone 290: RF signal processing unit

292: antenna

The present invention relates to a system and method for providing reproduction of a multimedia multimedia content part of a DDRM stored in a mobile communication terminal in an area where real time is not available. In more detail, a digital rights manager agent (hereinafter referred to as a "DRM agent") is transmitted to a mobile communication terminal by a rights issuing server for issuing rights to multimedia contents, and the DRM agent transmitted to the mobile communication terminal. Retrieves the authentication information and the authentication period of the authorization object, and if the mobile terminal does not receive the actual time information because it exists in the shadowed area or the unserviceable area, it executes a count program supported by the DRM agent The present invention relates to a system and a method for providing a reproduction of a DDR M-limited multimedia content stored in a mobile communication terminal in an area where an actual time of reproduction cannot be obtained.

The mobile communication system has been developed through the first generation analog AMPS (Advanced Mobile Phone System) method and the second generation cellular (Cellular) / Personal Communication Service (PCS) method. The third generation mobile communication system IMT-2000 (International Mobile Telecommunication 2000), which is enacted as a standard in ITU-R, is commercially available. IMT-2000 is CDMA 2000 1X, 3X, EV-DO, Wideband CDMA (WCDMA), etc., and is used in IS-95A and IS-95B networks by using the IS-95C network that has evolved from the existing IS-95A and IS-95B networks. It is a service that can provide wireless Internet at a transmission speed of up to 144 Kbps, much faster than the supportable data transfer rate of 14.4 Kbps or 56 Kbps. In particular, by using IMT-2000 service, it is possible to provide various multimedia services (AOD, VOD, etc.) at a faster speed as well as improving existing voice and wireless broadcasting service (WBS) service quality.

In addition, recently, as a part of overcoming the limitations in providing the wireless Internet service of the above-described mobile communication system, a portable Internet system (HPi: High Speed) capable of using high-speed wireless Internet service at a low cost while moving Development of the Portable Internet System or WiBro: Wireless Broadband Internet System. The portable internet system uses various types of portable terminals such as laptops, PDAs, and handheld PCs to access various types of information and contents by accessing the Internet in indoor and outdoor stationary environments and mobile environments at walking speeds and low to medium speeds. It is a service. In addition, it enables mobile subscribers to use the wireless Internet while moving at a speed of 60 km / h, provides a downlink transmission speed of 24 Mbps, and a downlink transmission of 50 Mbps using a multiple input multiple output (MIMO) system. It is an IP (Internet Protocol) based wireless data system that can provide speed.

The mobile subscriber can use the mobile communication system to carry voice communication while carrying the mobile communication terminal, and wirelessly access the Internet through the mobile communication system using the wireless Internet technology to transmit text, images, Multimedia data services such as voice or video are provided. The wireless Internet allows a mobile subscriber to search and download a variety of information by accessing the Internet using a mobile communication terminal without time or space constraints.

Recently, with the development of the Internet and multimedia data technology, a content provider (CP) that provides various contents such as multimedia communication, network game, and video game has emerged, and various services provided by the content provider are provided as mobile communication terminals. The number of mobile subscribers to use has increased.

In addition, the hardware of the mobile communication terminal continues to evolve in accordance with the service provided. Early models only supported voice calls and short message services, but the camera was installed on the mobile terminal so that users could take pictures, and the mobile communication terminal was equipped with a module capable of playing sound. In recent years, hardware development has been continued up to the mobile communication terminal equipped with a module capable of reproducing and receiving satellite broadcasting.

As the software and hardware of the mobile communication terminal develop, the multimedia contents provided to the mobile communication terminal also diversify. As contents provided to mobile terminals have been diversified, more users using illegal contents have increased, and content providers have been using Digital Rights (DRM) produced by the Open Mobile Alliance (OMA), a wireless Internet standardization organization, to prevent illegal distribution of contents. Management) technology.

DRM technology encrypts multimedia content provided to a mobile communication terminal using encryption technology so that only authorized users can use the multimedia content. When the mobile communication terminal requests the download of the multimedia content to use the multimedia content, the content issuing server transmits the multimedia content to the rights issuing server so that the rights issuing server encrypts the multimedia content and uses the encrypted multimedia content. Rights Object) is generated, and the created rights object and the encrypted multimedia content are combined and transmitted to the mobile communication terminal. At this time, the authorization object includes authentication information about the encrypted multimedia content and information on the authentication period.

Actual time information is required to reproduce the encrypted multimedia content in the mobile communication terminal. The mobile communication terminal receives the actual time information (Auth-Time) from the mobile communication network to allow the mobile communication terminal to play the multimedia content.

However, in the related art, there is a problem in that the encrypted multimedia content cannot be played when the mobile communication terminal receiving the encrypted multimedia content and the authorization object is located in a shaded area or an unserviceable area that cannot use the mobile communication service.

In order to solve this problem, the present invention transmits a digital rights manager agent (hereinafter referred to as a 'DRM agent') to a mobile communication terminal from a rights issuing server for issuing rights to multimedia contents. DRM agent retrieves the authentication information and authentication period of the authorization object, and if the mobile terminal does not receive the actual time information because it exists in the shadowed area or the unserviceable area, the DRM agent supports the counting program supported by the DRM agent. It is an object of the present invention to provide a system and method for providing reproduction of a multimedia multimedia content of a DDR M terminal stored in a mobile communication terminal in an area where the actual time for executing multimedia content is not available.

In order to achieve the above object, according to the first object of the present invention, there is provided a microprocessor for controlling the overall operation process related to voice transmission and reception and data transmission and reception, and for performing control related to the encrypted multimedia content and the authorization object; It includes a program storage unit that stores the rights object and stores the Digital Rights Management Agent (hereinafter referred to as 'DRM Agent') included in the rights object, and stores basic programs necessary to drive the mobile communication terminal. Key input unit having a function key button for inputting a short message and calling a specific function, a display unit for displaying an operation state of a mobile communication terminal on a screen, a microprocessor, a memory, a key input unit and a display unit Claims [1] A method of providing multimedia content stored in a DRM time limit multimedia content stored in a mobile communication terminal in an area where an actual time cannot be obtained from a mobile communication terminal, the method comprising: (a) multimedia encrypted by the authority issuing server at the request of the mobile communication terminal; Transmitting a content and an authority object to a mobile communication terminal; (b) retrieving an authority object and storing and driving the DRM agent in a program storage unit, wherein the DRM agent checks whether the mobile communication terminal exists in the service area; (c) requesting the microprocessor to update the actual time information (Auth-Time) every predetermined time when it is determined in step (b) that the mobile communication terminal exists in the service area; And (d) if it is determined in step (b) that the mobile communication terminal does not exist in the service area, start a count program supported by the DRM agent to generate current time information, and finally, while the mobile terminal is present in the service area. A time limit of the DRM stored in the mobile communication terminal in an area where real time is not available, comprising updating the real time information by adding current time information to the final real time information based on the updated final real time information. A method of providing playback of multimedia content is provided.

In addition, according to a second object of the present invention, in a mobile communication terminal providing reproduction of encrypted multimedia content stored in a mobile communication terminal in an unserviceable area, an overall operation process related to voice transmission and reception and transmission and reception of data in the mobile communication terminal And a connection request signal for the mobile communication terminal to access the multimedia content server to the mobile communication network, and store a Digital Rights Management Agent (DRM agent) in the program storage unit. A microprocessor performing a function; Stores various types of applications downloaded by the mobile terminal user and the software required to drive the mobile terminal, including electrically erasable programmable read only memory (EEPROM), flash memory and random access memory (RAM). Memory; And an application loader located in memory for loading an application, a download manager managing download of an application required by a mobile communication terminal, a mobile terminal call processing software, a mobile financial service, a content providing service, and Provides a mobile communication terminal that provides the playback of multimedia content in a non-serviceable area, characterized in that it includes an application software supporting a wireless Internet service including an e-government service, and includes a program storage unit for storing a DRM agent. .

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals have the same reference numerals 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.

In addition, hereinafter, the present invention will be described under the assumption that a code division multiple access (CDMA) 2000 system is used as the mobile communication system. However, the CDMA 2000 system is a system designated for convenience of description and the mobile communication system used in the present invention is not limited thereto.

FIG. 1 is a schematic diagram of a system for providing reproduction of a DDRM multimedia content stored in a mobile communication terminal in an area where real time is not available according to a preferred embodiment of the present invention.

According to a preferred embodiment of the present invention, a system for providing reproduction of a multimedia content of a DMM term stored in a mobile communication terminal in an area where real time is not available may include a mobile communication terminal 100, a wireless base station 112, a mobile communication switching center ( 114, data core network 116, short message service center 120, authorization server 130, subscriber database 132, network interworking device 140, gateway 150, Internet 160, multimedia content The server 170 and the content issuing server 180 are included.

The mobile communication terminal 100 according to the preferred embodiment of the present invention is connected to the mobile communication network 110 by a wireless communication function to perform a normal voice call by wireless communication with another mobile communication terminal 100 or a landline telephone. In addition to providing, the mobile communication terminal 100 capable of transmitting and receiving a short message, a multimedia message, etc. using the short message service center 120.

Here, the mobile communication terminal is a PDA (Personal Digital Assistant), cellular phone, PCS (Personal Communication Service) phone, Hand-Held PC (GSM), Global System for Mobile (GSM) phone, W-CDMA (Wideband CDMA) It may be a phone, a CDMA-2000 phone, a mobile broadband and system (MBS) phone, and the like. The type may be determined according to the type of mobile communication system constituting the mobile communication network 110. Here, MBS phone refers to a mobile phone to be used in the fourth generation system currently being discussed.

The mobile communication terminal 100 accesses the multimedia content server 170 using a wireless data service or a wireless internet service provided by the mobile communication network 110, requests the multimedia content provided by the multimedia content server 170, and Receives the encrypted multimedia content and the authority object which are combined and transmitted by the authority issuing server 180.

In this case, the right object is a program for decrypting the encrypted multimedia content, authentication information for the encrypted multimedia content, information on the authentication period of the encrypted multimedia content, and a Digital Rights Management Agent (DRM Agent). ).

In the present invention, the DRM agent is a program for managing encrypted multimedia contents. The DRM agent searches for a rights object, obtains authentication information on the encrypted multimedia content, and information on the authentication period of the encrypted multimedia content, and performs a mobile communication network every predetermined time. Receive real time information (Auth-Time) from the 110 and update.

In addition, when the mobile communication terminal 100 is present in a shadowed area or an unserviceable area, the DRM agent starts a count program supported by the DRM agent to update the actual time information last updated by the mobile communication terminal 100 in the service area. The current time is counted based on the reference, and the current time is added to the real time information so that the multimedia content can be played even in a shadowed area or an unserviceable area.

To this end, the mobile communication terminal 100 creates a short message or a multimedia message as well as the basic configuration as the mobile communication terminal 100 for using the voice communication service and the wireless data service or the wireless Internet service provided by the mobile communication network 110. And a message application capable of performing operations such as editing, modifying, storing, and deleting, and transmitting and receiving a short message or a multimedia message using the short message service center 120 and outputting it to the screen.

In addition, the mobile communication terminal 100 accesses the multimedia content server 170 using the mobile communication network 110 to view and select various multimedia contents, and to request a download. Protocol, Microsoft Internet Explorer (MIE) based on HTML using HTTP protocol, Handheld Device Transport Protocol (HDPT), NTT DOKOMO's i-Mode or SK Telecom's 'NATE' Is equipped with a browser.

The mobile communication network 110 includes a wireless base station 112, a mobile switching center (MSC) 114, and a data core network (DCN) 116, and includes a mobile communication terminal 100. It is connected wirelessly and connected to the authority issuing server 130 and the short message service center 120, the mobile communication terminal 100 performs a mobile communication service, such as voice communication service, wireless data service or wireless Internet service, message service It performs various functions to make it possible.

Here, the radio base station 112 performs a location registration function, a function of allocating a radio channel, various functions necessary for radio call processing such as handoff, and the like. The mobile switching center 114 performs basic and additional service processing for providing a voice communication service, receiving and originating call processing of a subscriber, location registration procedure and handoff procedure, and interworking with other networks. The data core network 116 includes a high speed data service for providing packet data communication service, an internet / intranet access service, a virtual private network (VPN) access service, a simple IP and a mobile IP service, Performs Point-to-Point Protocol (PPP) authentication, billing, and packet compression.

Short message service center 120 is implemented as a network server, using a mobile communication network 110 to send and receive numbers, letters, etc. in both directions between the mobile communication terminal 100 and a variety of text delivery system (not shown) in both directions Short Message Service (SMS) that delivers messages, and Multimedia Message Service (MMS) that delivers multimedia messages such as pictures, images, and videos other than simple text or voice messages. to provide.

The authority issuing server 130 according to the preferred embodiment of the present invention receives and encrypts the multimedia content requested by the mobile communication terminal 100 from the content issuing server 180, and generates a rights object for the encrypted multimedia content. It transmits to the mobile communication terminal 100.

The authorization issuing database 132 is a program for encrypting multimedia content transmitted from the content issuing server 180 under the control of the authorization object server 130, an authorization object application for generating an authorization object for the encrypted multimedia content, and authorization. Database that stores the data needed to create objects. Here, a database refers to a data structure implemented in a storage space of a computer system by using a database management system (DBMS) program, and data storage for freely searching, deleting, editing, and adding data. It means form. Such a database uses a relational database management system (RDBMS) such as Oracle, Informix, Sybase, Microsoft Structured Query Language (MS SQL) or DB2 for the purpose of the present invention. It can be implemented to suit the needs and has appropriate fields or elements to perform functions such as storing, searching, deleting, editing, and adding data.

The manganese interworking device 140 is located between the wireless communication system and the wired communication system, and the mobile communication terminal 100 transmits a wireless communication signal to access the multimedia content server 170 using the mobile communication network 110. Provides an interface for converting wireless data of the terminal 100 into wired data or converting wired data transmitted from the multimedia content server 170 to the mobile communication terminal 100 into wireless data, and includes a packet system and a circuit. (Circuit) Functions to convert protocol between systems. In general, the manganese interworking device 140 is directly connected to the mobile communication switching center 114 to connect a wired communication network and a wireless communication network.

The gateway 150 performs a process such as communication code conversion or protocol conversion between the mobile communication network 110 and the wired internet network so as to quickly retrieve and display information on the wired Internet, thereby enabling the mobile communication network 110 and the PSTN (Public Switched Telephone). Network, Public Switched Data Network (PSDN), Integrated Services Digital Network (ISDN), Broad ISDN (B-ISDN), Intelligent Network (IN), Public Land Mobile Network (PLMN), etc. To perform.

On the other hand, the gateway 150 includes a WAP (Wireless Application Protocol) gateway, the WAP gateway and the WAP gateway using the mobile communication network 110 to access the multimedia content server 170, the WAP browser is installed; Via the internet 160. Here, the WAP gateway receives an Internet service request from the mobile communication terminal 100 by the WAP protocol, converts the WAP gateway into a Transmission Control Protocol / Internet Protocol (TCP / IP) protocol, and transmits it to the multimedia content server 170. On the contrary, the response data from the multimedia content server 170 is received by the TCP / IP protocol, converted into the WAP protocol, and transmitted to the mobile communication terminal 100.

Internet 160 is a connection path for the mobile communication terminal 100 to access the web page provided by the mobile communication company via the mobile communication network 110 to register the necessary service in the mobile communication terminal 100 when the wireless Internet access To provide a network. Or, when the wired Internet access through the computer provides a connection path to facilitate data transfer through a web browser.

The multimedia content server 170 is a server that provides various multimedia contents to the mobile communication terminal 100. A web page showing a list of various multimedia contents for the mobile communication terminal 100 to view and select the multimedia contents. Or provide a Wap Page.

The content issuing server 180 according to a preferred embodiment of the present invention is a server for transmitting the multimedia content selected by the mobile communication terminal 100 to the authority issuing server 130, and the multimedia content download request signal from the multimedia content server 170. Receives and transmits the multimedia content to the authority issuing server 130.

FIG. 2 is a diagram schematically illustrating an internal structure of a mobile communication terminal that provides playback of a DDR M multimedia part multimedia content stored in a mobile communication terminal in an area where real time is not available according to a preferred embodiment of the present invention.

According to an exemplary embodiment of the present invention, a mobile communication terminal 100 that provides reproduction of a multimedia multimedia content part of a DDR type stored in a mobile communication terminal in an area where real time is not available may include a microprocessor 210, a memory 220, and a program. The storage unit 230, the mode state storage unit 240, the key input unit 250, the display unit 260, the digital signal processor 270, the baseband converter 280, the speaker 282, and the microphone 284. A wireless application protocol (WAP), which is an Internet access protocol, a Microsoft Internet Explorer (MIE) based on HTML using an HTTP protocol, a handheld device, and an RF signal processing unit 290 and an antenna 292. The mobile communication network 110 may be connected using a browser for wireless Internet access such as a handheld device transport protocol (HDPT), NTT DOCOMO's 'i-Mode', or SK Telecom's 'NATE'. The Internet 160 can be accessed via. Among the Internet access protocols used in the mobile communication terminal 100, MIE uses m-HTML, which is a shortened version of HTML, and in the case of i-Mode, a language called compact HTML (c-HTML), which is a subset of HTML. Use

The microprocessor 210 controls the overall operation of the voice communication and data transmission and reception in the mobile communication terminal 100. In addition, the microprocessor 210 transmits a connection request signal for the mobile communication terminal 100 to access the multimedia content server 170 to the mobile communication network 110, and transmits the encrypted multimedia transmitted from the authority issuing server 180. The content is stored in the memory 220 and the digital rights manager agent (hereinafter referred to as a "DRM agent") is searched for in the program storage unit 230 by searching for a rights object transmitted from the rights issuing server 180. Save function.

In addition, the microprocessor 210 performs a function of acquiring the authentication information and the authentication period of the multimedia content encrypted by searching for the authorization object by the request of the DRM agent and providing the information to the DRM agent.

The memory 220 includes an electrically erasable programmable read only memory (EEPROM), a flash memory, a random access memory (RAM), and the like. The memory 220 includes a basic program required for driving the mobile communication terminal 100 and a mobile program. The encrypted multimedia content received by the communication terminal 100 from the authority issuing server 130 is stored. The flash memory includes a real time operating system, a mobile terminal call processing software, multimedia coloring software, a short message application for creating and checking a short message, and a DRM agent for managing encrypted multimedia contents. There is a program storage unit 230 is stored, etc., the software of the program storage unit 230 is loaded into the RAM and driven.

In the present invention, the DRM agent is a program for managing encrypted multimedia contents. The DRM agent searches for a rights object, obtains authentication information on the encrypted multimedia content, and information on the authentication period of the encrypted multimedia content, and performs a mobile communication network every predetermined time. Receive real time information (Auth-Time) from the 110 and update.

In addition, when the mobile communication terminal 100 is present in a shadowed area or an unserviceable area, the DRM agent starts a count program supported by the DRM agent to update the actual time information last updated by the mobile communication terminal 100 in the service area. The current time is counted based on the reference, and the current time is added to the real time information so that the multimedia content can be played even in a shadowed area or an unserviceable area.

To this end, when the mobile communication terminal 100 is present in the service area, the DRM agent requests the microprocessor 210 to update the actual time information (Auth-Time) every predetermined time, and the mobile communication terminal 100 In case of rebooting, the request for updating of actual time information is requested every predetermined time on the basis of the reboot time. If the mobile communication terminal 100 is present in the shadowed area or the unserviceable area, the DRM agent supports the count program based on the last actual time information updated when the mobile communication terminal 100 is in the service area. It is activated to generate current time information, update the actual time information by adding the generated current time information to the final actual time information, and store the current time information every fixed time.

In addition, when the mobile terminal 100 reboots in a shadowed area or a service unavailable area, the DRM agent stores the last current time information last stored before the mobile terminal 100 reboots. In addition, the actual time information is updated.

The mode state storage unit 240 stores the current operation mode of the mobile communication terminal 100 selected by the key input unit 250 as a state flag (eg, 0, 1, 2, ...). That is, the microprocessor 210 has a unique state flag for each mode to distinguish the standby mode, the origination mode, the search mode, the call mode, the general incoming mode, the multimedia coloring service incoming mode, and the like of the mobile communication terminal 100. The mode state storage unit 240 is updated by allocating a.

The key input unit 250 includes a number key for inputting a number such as a phone number, a button for inputting a character, and a function key button for calling a specific function. The mobile communication terminal 100 includes a key input unit ( 250) to compose a short message.

The display unit 260 displays an operation state of the mobile communication terminal 100 including a power supply state, a radio wave reception strength, a date and time, and a menu item for executing an application and the mobile communication terminal 100 wirelessly. A screen for downloading various content applications from a data service is displayed, and a screen of a short message application for checking a short message received by the mobile communication terminal 100 and creating a short message is displayed.

The digital signal processor 270 (DSP: Digital Signal Processor) functions as an equalizer for coding or decoding a voice signal and removing multipath noise, and for processing sound data and decoding a caller-specific multimedia content. Means a digital signal processing processor to perform. In addition, the digital signal processor 270 exchanges speech data with the baseband converter and receives digital data (RX DATA) including caller-designated multimedia content received from the baseband converter.

The baseband converter 280 converts a signal transmitted / received between the RF signal processor 290 and the digital signal processor 270, the speaker 282, and the microphone 284 into a baseband band signal, Performs functions such as digital to analog conversion (DAC) and analog to digital conversion (ADC). The baseband converter 280 transmits the transmission data TXIQ to the RF signal processor 290, and controls the power of the RF signal processor 290 or automatically controls its gain. The RF signal processor 290 receives the received signal RFIQ.

The RF signal processor 290 demodulates and amplifies the RF signal received from the antenna 292, modulates a transmission signal applied from the baseband converter, and transmits the modulated signal to a radio wave space. The speaker 282 outputs acoustic data transmitted from the baseband converter as an audible sound, and the microphone 284 converts a user's voice input into an electrical signal.

FIG. 3 is a flowchart illustrating a process of providing reproduction of a DDR M multimedia part multimedia content stored in a mobile communication terminal in an area where real time is not available according to an exemplary embodiment of the present invention.

In response to the request of the mobile communication terminal 100, the multimedia content and the rights object encrypted by the authorization issuing server 130 are transmitted to the mobile communication terminal 100 (S300).

In this case, the right object is a program for decrypting the encrypted multimedia content, authentication information for the encrypted multimedia content, information on the authentication period of the encrypted multimedia content, and a Digital Rights Management Agent (DRM Agent). ).

In the present invention, the DRM agent is a program for managing encrypted multimedia contents. The DRM agent searches for a rights object, obtains authentication information on the encrypted multimedia content, and information on the authentication period of the encrypted multimedia content, and performs a mobile communication network every predetermined time. Receive real time information (Auth-Time) from the 110 and update.

In addition, when the mobile communication terminal 100 is present in a shadowed area or an unserviceable area, the DRM agent starts a count program supported by the DRM agent to update the actual time information last updated by the mobile communication terminal 100 in the service area. The current time is counted based on the reference, and the current time is added to the real time information so that the multimedia content can be played even in a shadowed area or an unserviceable area.

To this end, when the mobile communication terminal 100 is present in the service area, the DRM agent requests the microprocessor 210 to update the actual time information (Auth-Time) every predetermined time, and the mobile communication terminal 100 In case of rebooting, the request for updating of actual time information is requested every predetermined time on the basis of the reboot time. If the mobile communication terminal 100 is present in the shadowed area or the unserviceable area, the DRM agent supports the count program based on the last actual time information updated when the mobile communication terminal 100 is in the service area. It is activated to generate current time information, update the actual time information by adding the generated current time information to the final actual time information, and store the current time information every fixed time.

In addition, when the mobile terminal 100 reboots in a shadowed area or a service unavailable area, the DRM agent stores the last current time information last stored before the mobile terminal 100 reboots. In addition, the actual time information is updated.

The mobile communication terminal 100 receiving the encrypted multimedia content and the authorization object searches for the authorization object and stores the DRM agent in the program storage unit 230, and the DRM agent is operated by the mobile communication terminal 100 in the service area. Check whether there exists (S302).

If it is determined in step S302 that the mobile communication terminal 100 exists in the service area, the DRM agent requests the microprocessor 210 to update the actual time information every predetermined time, and the DRM agent requests that the mobile communication terminal 100 be in the service area. Check whether it exists in (S304).

If it is determined in step S302 that the mobile communication terminal 100 does not exist in the service area, the DRM agent starts the count program supported by the DRM agent to generate current time information, and the mobile communication terminal 100 exists in the service area. The current time information is updated by adding the current time information to the last actual time information on the basis of the last updated real time information, and the current time information generated by the count program is stored every predetermined time (S306).

After step S306, the DRM agent checks whether the mobile communication terminal 100 exists in the service area and determines that the mobile communication terminal 100 does not exist in the service area, and repeats step S306 (S308).

If it is determined in step S308 that the mobile communication terminal 100 exists in the service area, the DRM agent ends the count program and requests the microprocessor 210 to update the actual time information to update the actual time information (S310).

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 scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

As described above, according to the present invention, a digital rights manager agent (hereinafter referred to as a "DRM agent") is transmitted from a rights issuing server for issuing rights to multimedia contents to a mobile communication terminal. The DRM agent sent to the device retrieves the authentication information and the authentication period of the authorization object, and if the mobile terminal exists in the shadowed area or the unserviceable area, it runs a count program supported by the DRM agent to play the multimedia content. Even if a mobile communication terminal exists in an unserviceable area or a shadow area during the certification period of a multimedia content, the mobile communication service provider has an effect of creating new added value through activation of a content provider.

Claims (11)

A microprocessor that controls overall operations related to voice transmission and reception and transmission and reception of data, and performs control related to encrypted multimedia content and rights objects, and a digital rights manager that stores the encrypted multimedia content and the rights object and is included in the rights object. It includes a program storage unit that stores an agent (Digital Rights Management Agent, hereinafter referred to as 'DRM Agent'). It is used to input a short message and memory that stores basic programs necessary for driving a mobile communication terminal. A mobile communication device comprising a key input unit having a function key button, a display unit for displaying an operation state of the mobile communication terminal on a screen, the microprocessor, the memory, the key input unit, and the display unit. In the area can not obtain the actual time at the end of the method of providing DRM fixed-term reproduction of the multimedia contents stored in the mobile terminal, (a) transmitting, by the authorization issuing server, the encrypted multimedia content and the authorization object to the mobile terminal at the request of the mobile communication terminal; (b) retrieving the rights object and storing and driving the DRM agent in the program storage unit, wherein the DRM agent checks whether the mobile communication terminal exists in a service area; (c) requesting the microprocessor to update actual time information (Auth-Time) every predetermined time when it is determined in step (b) that the mobile communication terminal exists in the service area; And (d) if it is determined in step (b) that the mobile communication terminal does not exist in the service area, a current time information is generated by starting a count program supported by the DRM agent; Updating the real time information by adding the current time information to the last real time information on the basis of the last real time information last updated while being present. And providing the reproduction of the DRM-terminal multimedia content stored in the mobile communication terminal in an area where real time is not available. The method of claim 1, wherein the authority object, An area where real time is not available, comprising a program for decrypting the encrypted multimedia content, authentication information for the encrypted multimedia content, information on an authentication period of the encrypted multimedia content, and the DRM agent Providing multimedia data stored in the mobile terminal of the DDR time limit. The method of claim 1, wherein the DRM agent, A program for managing the encrypted multimedia contents, wherein the authority object is searched for to obtain authentication information about the encrypted multimedia contents and information about an authentication period of the encrypted multimedia contents, and to the microprocessor every predetermined time. A method for providing reproduction of a DDRM multimedia content stored in a mobile communication terminal in a region where real time is not available, wherein the real time information is requested. The method of claim 1, In the step (c), the DRM agent stores the real time information when the real time information is updated, and every predetermined time on the basis of the time of rebooting when the mobile communication terminal is rebooted. And requesting the microprocessor to update the real time information. The method of claim 1, wherein the DRM time limit multimedia content is stored in the mobile communication terminal in a region where no real time is available. The method of claim 1, After step (c) or after step (d), The DRM agent periodically checks whether the mobile communication terminal exists in the service area. The method of providing DRM multimedia content playback stored in the mobile communication terminal in an area where real time is not available. . The method of claim 1, In the step (d), when the mobile communication terminal does not exist in the service area, the current time information generated by the DRM agent is stored every predetermined time, and the mobile communication terminal does not exist in the service area. In case of rebooting, the DRM agent cannot obtain the real time, wherein the DRM agent updates the real time information by adding the last current time information last stored before the mobile communication terminal reboots to the final real time information. 12. A method for providing reproduction of DDR multimedia term multimedia content stored in a mobile communication terminal in a region. The method of claim 1, After the step (d), if the mobile terminal enters the service area, the count program is terminated, and the actual time information is updated by requesting the microprocessor to update the real time information. A method for providing reproduction of a multimedia multimedia content stored in a mobile terminal in an area where time is not available. A mobile communication terminal for providing reproduction of encrypted multimedia content stored in a mobile communication terminal in a non-service area, Control the overall operation of the voice communication and data transmission and reception in the mobile communication terminal, and transmits a connection request signal for accessing the multimedia content server to the mobile communication network, the digital rights manager agent (Digital Rights Management) A microprocessor configured to store an agent (hereinafter referred to as a "DRM agent") in a program storage unit; Various types of applications downloaded by the user of the mobile terminal and the software required to drive the mobile terminal, including EEPROM (Electrically Erasable Programmable Read Only Memory), Flash Memory and Random Access Memory (RAM). A memory for storing the; And An application loader which is located in the memory and loads the application, a download manager which manages the download of the application required by the mobile communication terminal, the mobile communication terminal call processing software, a mobile financial service, Program storage unit for storing the DRM agent and the application software for supporting the wireless Internet services, including content providing services and e-government services A mobile communication terminal providing playback of multimedia content in a non-serviceable area, comprising: a. The method of claim 8, wherein the microprocessor, At the request of the DRM agent, the mobile terminal checks whether the mobile communication terminal exists in the service area, updates the actual time information (Auth-Time), and starts a count program if the mobile communication terminal does not exist in the service area. And controlling to generate current time information. The method of claim 9, wherein the actual time information, Information required for playing the encrypted multimedia content, the microprocessor is received and stored in the mobile communication network at the request of the DRM agent, and the actual time information when the mobile communication terminal does not exist in the service area A mobile terminal providing playback of multimedia content in an unserviceable area, wherein when the mobile communication terminal is present in the service area, the real time information is updated by adding current time information to the last stored real time information. Communication terminal. The method of claim 9, wherein the current time information, When the mobile communication terminal does not exist in the service area, the DRM agent starts and generates a count program to update the actual time information. .

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