KR20060002654A - Apparatus and method of representating description language for multimedia contents protection and management - Google Patents

Abstract

The present invention relates to a language expression method and apparatus for protecting and managing multimedia contents during a content life cycle such as creation, consumption, delivery, and editing in a distribution process of digital multimedia contents using wired and wireless networks. It describes the elements that perform the action, and classifies the restriction element that restricts the multimedia content and the transfer element that constitutes the negotiation action between peers, and protects and manages the restriction and delivery of the content itself.

MPEG-21, IPMP, Rights Expression language (REL), DID, Rights Management, Digital Rights Management (DRM), Contents Protection, Multimedia Contents

Description

Apparatus and method of representating Description Language for Multimedia contents protection and management}             

1 is a block diagram showing the multimedia framework structure of MPEG-21.

2 is a schematic diagram showing the relationship between peers in MPEG-21.

3 is a diagram illustrating the basic elements of IPMP in the language expression method for the protection and management of multimedia content according to the present invention.

4 is a diagram illustrating restriction elements in a language expression method for protecting and managing multimedia content according to the present invention.

FIG. 5 is a diagram illustrating host information elements in a language expression method for protecting and managing multimedia content according to the present invention.

6 is a diagram illustrating a method element in a language expression method for protecting and managing multimedia content according to the present invention.

FIG. 7 is a diagram illustrating a transfer element in a language expression method for protecting and managing multimedia content according to the present invention.

8 is a diagram illustrating a source peer element in a language expression method for protecting and managing multimedia content according to the present invention.

9 is a diagram illustrating a trust session element in a language expression method for protecting and managing multimedia content according to the present invention.

10 is a block diagram illustrating a language expression apparatus for protecting and managing multimedia content according to the present invention.

Explanation of symbols on the main parts of the drawings

11: IPMP Manager

12: log engine

13: tool manager

The present invention provides systematic copyright protection, resource protection and management during the life cycle of digital multimedia content generation, consumption, and extinction, and can support IPMP functions within the MPEG-21 multimedia framework. A method and apparatus for language expression for protection and management.

Recently, the rapid development of the Internet environment and the high speed and broadband of the network environment have made it possible for all users to use multimedia contents. In addition, as piracy and illegal use of multimedia contents are also rapidly increasing, interest in illegal use and duplication of contents is also rapidly increasing.

Since the late 1990s, some international standardization organizations have been researching standardization to protect intellectual property rights and control and prevent piracy of multimedia. The most representative standard is Digital Rights Management (DRM).

The DRM defines a protection scheme for the safe distribution and prevention of illegal copying of various digital contents distributed through the web. In order to protect digital contents from online piracy of commercial data spread through a file exchange program, It is difficult to prevent violations by violating the violators.

In addition, since the late 1990s when the DRM research began, the multimedia contents distribution business through the Internet has been rapidly growing. To solve the fundamental copyright infringement problem of digital only such as hidden piracy behind this rapid growth. In order to satisfy the needs of consumers, authors, and distributors within the multimedia content lifecycle, the market needs to absorb basic element technologies such as digital watermarking technology and encryption into DRM. Developed.

The early DRM market was mainly focused on the world's standardization organizations, among which the most active ones were the Motion Picture Expert Group (MPEG) ¹¹ http://www.mpeg.org, DOI (Digital Object Identification). ²² http://www.doi.org, inopers of data in e-commerce systems ³³ http://www.indecs.org, Open e-Book Forum (OeBF) ⁴⁴ http: //www.openebook. org, W3C consortium (world wide web consortium) ⁵⁵ http://www.w3c.org, XML rights markup language (XrML) ⁶⁶ http://www.xrml.org, Open Digital Rights Language (ODRL) ⁷⁷ http: / /www.odrl.org and EBX (e-Business eXchange working group) ⁸⁸ http://www.ebx.com. Each has developed its own DRM system.

The DRM system developed in this way is developed to meet the market pursued by each standardization organization, and is limitedly developed for specific target markets such as digital sound source service, digital movie service, e-book and digital library. It is.

As such, DRM has been constructed as a system applied under a specific environment for each field, and compatibility with each other in programs such as different system environments or different user applications has emerged as a problem. Accordingly, inconvenience of the user has increased.

The present invention has been proposed to solve the above-mentioned conventional problems, and its object is to provide systematic copyright protection, resource protection and management during the life cycle of digital multimedia content generation, consumption, and extinction. It is to provide a language expression method and apparatus for protecting and managing multimedia contents that can support the IPMP function in the multimedia framework.

In addition, an object of the present invention is to provide a language expression method and apparatus for the protection and management of multimedia content that can ensure the user to use properly paid for the right to use properly.

In addition, the present invention goes beyond the concept of digital rights management (DRM) to form a broader concept of a multimedia framework, maximizing the interoperability of hardware and software (required from the user and producer's point of view) An object of the present invention is to provide a language expression method and apparatus for protecting and managing multimedia contents that can solve all problems.

Another object of the present invention is to provide a method and apparatus for expressing a language for protecting and managing multimedia content so that multimedia content can be most efficiently protected and managed using an XML language.

As a constitutional means for achieving the above object of the present invention, the present invention is to protect and manage the multimedia content during the life cycle of creation, consumption, delivery, editing, etc. in the distribution process of digital multimedia content using wired or wireless network In the language expression method to

Expressing the IPMP information as a constraint element that restricts the multimedia contents by describing elements that substantially perform IPMP actions; And

In the peer-to-peer communication, the step of expressing the IPMP information as a transfer element consisting of the elements constituting the negotiation,

Expressing the IPMP information as the constraint element and expressing the IPMP information as the transfer element may be selectively applied in the distribution process of the digital multimedia contents.

In addition, in the language expression method for protecting and managing the multimedia content, the method may be expressed in an XML language, and the multimedia content applied to the step of expressing IPMP information with the constraint is Contents Digital item (CDI). The multimedia content to which IPMP information expressed as a transfer element is added is a context digital item (XDI).

Further, in the language expression method for protecting and managing the multimedia content, expressing the IPMP information with the restriction element may include host information (HostInfo) describing a user who is allowed to access the digital item of the multimedia content to be restricted. And target information defining a digital item to be protected and constrained, and method information defining a mechanism and a tool used to protect and constrain the digital item. May include other constraints therein, in which case, IPMP processing is repeatedly performed, and the host information is described using a rights expression language (REL), and the target is a position value. Wherein the method is the name of the mechanism or tool used to constrain the digital item, And an identifier indicating a method URI type, characterized in that the technology to the position of the identifier.

Further, in the language expression method for protecting and managing the multimedia content, the step of expressing IPMP information as the transfer element comprises: a source peer describing characteristics of a transmitting peer in peer-to-peer communication; Trust session information describing information about a trusted session in which peer-to-peer communication occurs, and a destination peer describing the characteristics of the peer that will respond to the IPMP state with the source peer in peer-to-peer communication. Information and request information required for negotiation for constraint separation and interoperability of IPMP in multimedia content delivered between peers, wherein the source peer information describes a method of restricting a digital item used by a sender. A method that describes method information and basic information about the source peer that the sender is using. Performance information and host information describing the sender personal information required for the authentication process, wherein the destination peer information is described as address information indicating the location information of the peer that will respond to the request of the source peer in the peer-to-peer communication. The trust session information is characterized by a method describing a mechanism and a tool for creating a trust session between peers, and time information represented by the time of the start point and the end point at which the trust session is formed.

In addition, expressing IPMP information as the transfer element may be applied to a negotiation process of a query, a request, and a response made between peers, thereby maximizing interoperability between peers.

In addition, the present invention provides an MPEG-21 system in which IPMP information is added to a digital item by a language expression method for protecting and managing the above-mentioned multimedia contents.

The present invention also provides a digital multimedia distribution system in which IPMP information is added to a digital item by a language expression method for protecting and managing the above-mentioned multimedia contents.

In addition, the present invention provides a language expression apparatus for protecting and managing multimedia contents during a content life cycle of generation, consumption, delivery, editing, etc. in a distribution process of digital multimedia contents using wired or wireless networks, An IPMP manager which receives the input, detects the added constraint, and performs IPMP processing; A log engine for logging the used IPMP functions or responding to incident reports; And a tool manager for searching for and providing a tool required for IPMP processing of the IPMP manager.

In the apparatus, the IPMP manager comprises a job scheduler for manipulating / driven communication between peers / peers, and extracting the constraint / protection element of the received digital item to perform XML parsing; An IPMP analyzer for parsing the IPMP elements extracted from the job scheduler; And an IPMP database for storing IPMP information extracted from the job scheduler, wherein the tool manager comprises: a tool database for storing tools required for IPMP processing; And a tool finder that searches for and provides the tool according to the request of the IPMP manager.

Hereinafter, a language expression method and apparatus for protecting and managing multimedia content according to the present invention will be described in detail with reference to the accompanying drawings.

In the method and apparatus of the present invention, the multimedia content includes all existing data such as text, image, audio, and the like, and composite data and a group of data in which they are combined.

MPEG-21 is a comprehensive multimedia framework standard that can service digital contents such as multimedia such as audio, video, and graphics, e-books, broadcasting, and digital cinema.It is based on copyright protection and interoperability. It is being classified into three elements, and standardization work is underway to propose technology for each element.

1 is a block diagram showing the elements of the framework of MPEG-21. The seven elements constituting the framework between User A and User B are an abstract and interoperable uniform with flexibility for the declaration of digital items. Content processing to define the DI declarations that are created, DI Identification and Description, and standard interfaces (or protocols) for managing, authoring, and searching for using digital items and descriptions; Content Handing and Usage, Intellectual Property Management and Protection (IPMP) for copyright protection and management of digital items, and terminals and telecommunications networks to provide transparent interconnectivity for accessing digital items over a network or terminal. terminal and network, text, voice, graphics, video, etc. to effectively express multimedia How to consist of content representation (content representation), delivery, norms, procedures, incident reporting (Event Eeproting) making measurements (metrics) and interfaces with respect to the model covering the areas.

In the above, the users A and B may include all producers, distributors, and consumers of multimedia content.

The present invention relates to the definition of the expression language (DL) of IPMP as a component of such a framework.

IPMP is a form of DRM defined within the MPEG standard. In general, the composition of MPEG IPMP may be considered as a fused form of conditional access and DRM. The end user's decryption key-based conditional access is included in the encryption and decryption functions such as determining whether or not to decrypt or deny the digital content data encrypted by the Yes / No system. This includes the concept of DRM, which requires users to meet certain requirements related to the use of their content, such as licenses to users who meet the requirements, their identity identified, and the availability of a given license.

In addition, the present invention allows the IPMP framework for MPEG-n content to allow the MPEG-n terminal to manage one or more IPMP system (IPMP Tool).

Figure 3 shows the basic elements for IPMP technology according to the language expression method for the protection and management of multimedia content according to the present invention.

Referring to FIG. 3, the language expression method for protecting and managing multimedia content according to the present invention is a basic element for protecting and managing multimedia content, and has IPMP 100 as an upper element and a lower element in DI. It defines a restriction element 200 that constrains, and a transfer element 300 that communicates between peers. The two elements 200 and 300 cannot be used simultaneously and are optionally used.

In the above, IPMP 100 is served as the root element for complete description and may be used as the top level element.

The constraint element 200 describes the constraints and protected features of DI in relation to the target's information, methodological characteristics, and host user information. The constraint element 200 may include itself as a component therein in case of repetitive constraints.

In addition, the transfer element 300 is an element used for conversation or communication between MPEG-21 IPMP peers, and includes interoperable transaction features, messages from internal feeder communication, IPMP state, destination peer, and trust session state. And the like. The transfer element 300 is an element that applies a method for querying, responding to, and requesting information necessary for applying IPMP. Through the application of the transfer element 300, interoperability, adaptation, and authentication with other MPEG-21 peers are possible.

The following shows an example of the syntax of the root element (IPMP (100)).

Here, briefly referring to the method of expressing the MPEG-21 DI, the DI may be divided into a Content DI (CDI) expressed to represent content according to its contents, and a Context DI (XDI) composed of metadata and related information. have. Most multimedia contents are in the form of CDI. However, in case of communication between MPEG-21 peers or transmission of related information to other places, they form the form of XDI.

Due to these factors, in the present invention, as shown in FIG. 3, the elements representing the IPMP are classified into the constraint element 200 and the transfer element 300.

In other words, the restriction element 200 is used to express many IPMP methods and IPMP tools that should be used for the protection of the content. Can be.

In addition, the transfer element 300 is used as a support method for interoperability, which is one of the most important elements in the multimedia framework. The element 300 is used for communication between inter-peers, in which case the transfer element 300 can be used only once.

The transfer element 300 is divided into three methods according to the communication negotiation process. The negotiation process includes authentication, trust management, interoperability, and IPMP adaptation for the peer. This is the most basic process for supporting adaptation. The three cases used in the negotiation process are Query, Request, and Response, and the content that is actually expressed varies according to each case.

Referring to the diagram of FIG. 2, in the case of a query, a request is made to the other peer for desired information. In the case of a request, the information of the peer is already available through a query or other process. It is the process of asking for the necessary information when it is known. The response is used in the process of providing related IPMP information in response to the query or request.

Next, FIG. 4 is a diagram showing specific elements describing the constraint element 200. The constraint element 200 substantially describes elements that perform IPMP actions, and is defined as a host information (HostInfo) 210, a target 220, and a method 230. In addition, the constraint 200 may have another constraint 200 'inductively defined therein. In addition, the constraint 200 is identified by a unique ID value distinguished from other constraints. The following shows an example of the syntax of the constraint element 200 according to the above definition.

In the host information (HostInfo) 210 is defined to identify the user allowed to access the DI to be constrained to identify, it may describe the user state using the Rights Expression Language (REL). . As shown in FIG. 5, the host information 210 may be represented by using r: Principal information 211 that is already used in the REL. In addition, in some cases, it may be supported by a group (allPrincipals) 212 to be a subject as a group. In FIG. 5, a key holder (213), which is the remaining element defining the host information 210, is one of the lower elements of the host information (HostInfo) 210 already defined by the REL. The described host information (HostInfo) is supplemented.

An example of a syntax describing the host information is shown below.

Next, the target 220, which is an element representing the constraint element, defines an object to be protected or restricted, ID, and may be expressed in the form of a position value.

The following shows an example of the syntax for expressing the target 220 element.

In the above syntax, 'mimeType' is a media type value indicating the type of resource as defined in RFC 2045.

The locationType representing the target 220 may also be expressed as an ID value for identifying the target or a URL in which the target exists.

Finally, the method 230 of the elements representing constraint 200 defines the mechanisms or tools used to protect or constrain DI, and is defined as an extension of the method type. The method of this constraint can define the performance of IPMP and can use the MPEG standard or other standard. In addition, the method 230 may include other method elements.

FIG. 6 shows an element describing the method 230 described above, wherein the method 230 includes a Name 231 describing the name of the mechanism or tool used to constrain DI, and An identifier 232 indicating which URI type the method name is, and a location 233 describing the location of the method identifier 232. The ID value of 230 is expressed as a unique value.

In addition, the method 230 may include other method 234 elements.

The following shows an example of the method syntax described according to the above.

Next, the transfer 300 will be described among the elements representing the IPMP 100.

7 is a diagram illustrating the structure of the transfer 300.

Referring to FIG. 7, the transfer 300 includes a source peer 310, a trusted trust session 320, a destination peer 330, and a request information 340. The following syntax shows an example of the syntax of the transfer 300 expressed as such elements.

Among the components of the transfer 300, the source peer 310 is a factor defining a transmitting peer in internal peer-to-peer communication, and is a feature of a transmitting peer requesting CDI transmission or requesting an IPMP capability, a tool, or a DRM system. Describe. In the above, the transmitting user information and the terminal performance will be used for authentication of communication, and the location information of the receiving peer is generally known. The structure of this source peer 310 is described in more detail below.

Next, the destination peer 330 is an element that describes the third peer, which is a new target peer to respond to the IPMP status instead of the reception peer, as shown in FIG. In general, the destination peer 330 matches the reception peer, but since the source peer knows that the reception peer does not have the corresponding IPMP information, the destination peer 330 can request the IPMP information through the destination peer. have. Here, the negotiation procedure between the reception peer and the destination peer is not considered. This procedure can be a new negotiation procedure using the transfer element. The destination peer 330 is described as an address element indicating a location of a destination, and may be expressed as, for example, the following syntax.

As a next element, the request information 340 is an element describing information requested for negotiation for resolution or interoperability of IPMP constraints in DI. The request information is information necessary for a source peer and is obtained from a receiving peer or a destination peer. An example of the syntax of the request information 340 is shown.

Next, the trust session 320 describes a reliable session information for communication between internal peers, and describes how to create a trust session. At this time, for trust management, the trust session can confirm whether the state of the session is a trust. When a new trust session is created, it must be expressed when the trust session starts. In addition, we describe a method for assuming a trust case. In this case, it is not necessary to use the protocol of XDI for communication between MEPEG-21 peers. 9 is a diagram illustrating the elements described in the trust session 320. The method is largely composed of a method 321 describing a mechanism and a tool for creating a trust session, and time information 322 representing time information in which a trust session is formed. . The method 321 element of the trust session 320 includes the name 321a of the mechanism and tool that creates the trust session, an identifier 321b that indicates the URI type of the qualified name 321a, and the method 321. It consists of a position 321c with respect to the identifier 321a of, and may include another method 321d as an internal element. The method 321 is described by a unique ID value in the digital item. The time information 322 is described as the start date / time and the end date / time of the trust session 320.

An example of the syntax describing the trust session 320 is shown below.

Next, the source peer 310 of the elements of the transfer 300 will be described in more detail with reference to FIG. 8.

FIG. 8 is a diagram illustrating elements describing the source peer 310. The source peer 310 includes a method 311 describing a method of constraining DI used by the sender, and a source peer used by the sender. The terminal performance 312 describing basic information and the host information 313 describing the sender personal information required for authentication processing are represented. In the above, the method 311 is the same as described above, the mechanism for constraining DI and the name of the tool (311a), the identifier (311b) indicating the URI type of the prescribed tool and the location (311c) of the identifier (311b) And other methods 311d.

The terminal performance 312 can be used by borrowing elements that can be expressed in MPEG-4 IPMP. The performance information describing the performance of the transmitter and the MPEG4IPMP 312a describing the terminal ID type information flowing from the MPEG-4 at this time are described. It is represented by 312b. The performance information 312b may be expressed as a MIME media type that identifies the type of resource as defined in RFC2045.

The following shows an example of the syntax for describing the source peer 310.

The language expression method for protecting and managing multimedia content of the present invention defined as described above may be performed in a device configured as shown in FIG. 10.

10 is a block diagram illustrating a language expression apparatus for protecting and managing multimedia content according to the present invention.

Referring to FIG. 10, a language expression apparatus for protecting and managing multimedia content according to the present invention includes an IPMP manager 11, a log engine 12, and a tool manager 13.

The IPMP manager 11 includes a job scheduler 111, an IPMP analyzer 12, an IPMP database 113, and an IPMP BO 114.

The job scheduler 111 receives the DI from the outside and performs the IPMP process. First, the job scheduler 111 detects the constraint, performs the IPMP process on the detected constraint, and stores the DI in the DI storage 15. The job scheduler 111 is a central processor of the IPMP manager 11. The job scheduler 111 drives peer-to-peer communication, intra-peer communication, checks constraints / protective elements, and delivers XML parsing. In communication, peer-to-peer communications and intra-peer communications are manipulated. The job scheduler 111 transfers and stores the IPMP information extracted from the input DI to the IPMP database 113 and stores the processed DI in the external DI storage 15.

The IPMP analyzer 112 performs XML parsing on the IPMP elements extracted by the job scheduler 111 to check the constraints and the protection elements. More specifically, the IPMP analyzer 112 interprets XPath, XML digital signature, XML encryption, and the like, performs XML parsing, confirms the location of constraints and protections, and creates a necessary work order.

The IPMP database 114 stores IPMP status information, environment information, basic operation information, and encryption / encoding information extracted from the job scheduler 111.

The log engine 12 is a means of invoking the IPMP function, and logs the used IPMP function or responds to an event report of MPEG_21.

The tool manager 13 includes a tool finder 131 and a tool database 132 as means for providing a tool required for IPMP processing in the IPMP manager 11.

The tool database 132 stores tools required for IPMP processing, and the tool finder 131 finds and provides the required tools.

The language expression apparatus 10 for protecting and managing multimedia contents according to the present invention described above performs IPMP processing on DI input and output while communicating with other components 14 and the DI storage 15 in the MPEG-21 system. .

Next, an example to which the multimedia content protection and management language expression method according to the present invention is applied will be described.

First, the following XML notation shows the IPMP DL schema expressed according to the present invention.

Next, XML examples of DI with license and DI with IPMP constraint are shown in detail.

The XML notation below represents the license and resource constraints in DI.

The XML notation below is an example related to communication and represents a query process.

The XML notation below represents the response process.

The following XML notation represents the request process.

The XML representation below illustrates trust management.

The XML notation below represents a digital item.

As described above, the present invention provides an IPMP function within the MPEG-21 multimedia framework for copyright protection, resource protection, and management of content generated during the entire life cycle such as generation, consumption, and destruction of digital multimedia content. I can support you.

In addition, the present invention can ensure that the user reasonably paid for the right to use paid properly, to maximize the interoperability (hardware and software) interoperability (interoperability) and to support it, the basic of MPEG-21 It can fulfill the requirements faithfully and solve all the problems required from the user's point of view and the producer's point of view.

In addition, the present invention enables the most efficient multimedia content protection and management using the XML language.

Claims (24)

In the distribution process of digital multimedia contents using wired and wireless network, in the language expression method for protecting and managing the multimedia contents during the life cycle of creation, consumption, delivery, editing, etc. Expressing the IPMP information as a constraint element that substantially limits the elements that perform IPMP and restricts the multimedia contents; And In the peer-to-peer and peer-to-peer communication, a step of expressing the IPMP information as a transfer element consisting of elements that make up the negotiation behavior between peers, Expressing the IPMP information as the constraint element and expressing the IPMP information as the transfer element are selectively expressed and applied in the distribution process of the digital multimedia content. . The method of claim 1 wherein the method is A language expression method for protecting and managing multimedia content, which is expressed in an XML language. 2. The method of claim 1, wherein the multimedia content applied to expressing the IPMP information with the constraint element is a content digital item (CDI). The method of claim 1, The constraint element is a language expression method for protecting and managing multimedia content, characterized in that it is identified as an ID uniquely provided in a digital item of the multimedia content. The method of claim 1, wherein expressing IPMP information with the constraint Host information (HostInf) describing the users allowed to access the digital item of the multimedia content to be constrained, Target information defining the digital item to be protected and constrained, and used to protect and constrain the digital item. A method for expressing and protecting a multimedia content, characterized in that it is a step described by method information defining a defined mechanism and tool. The method of claim 5, The constraint may include other constraints therein, In this case, the language expression method for protecting and managing multimedia content, characterized in that IPMP processing is repeatedly performed. The method of claim 5, wherein expressing IPMP information with the constraints And expressing a user state using the rights expression language (REL). The method of claim 5, wherein expressing IPMP information with the constraints And a method of expressing the target as a location value. The method of claim 5, wherein expressing IPMP information with the constraints And describing the target as a URL in which the target exists. 6. The method of claim 5, wherein in the step of expressing IPMP information as the constraint The method protects multimedia content, characterized by the name of the mechanism or tool used to constrain the digital item, an identifier indicating what URI type the method of the prescribed name is, and the location of the identifier. How to express language to manage. The method of claim 1, wherein the multimedia content applied to the step of expressing IPMP information as the transfer element is a ConteXt Digital Item (XDI). The method of claim 1, wherein the step of expressing IPMP information as the transfer element is In peer-to-peer communication, a source peer describing characteristics of a sending peer, trust session information describing information about a trusted session in which peer-to-peer communication is performed, and peer-to-peer communication. A request describing the destination peer information describing the characteristics of the peer that will respond to the IPMP status as the source peer, and the request information necessary for negotiation for constraint separation and interoperability of IPMP in the multimedia contents delivered between the peers. And a step of describing information. The method of claim 12, wherein the source peer information is Represented by method information describing the method of restricting digital items used by the sender, terminal performance information describing basic information about the source peer used by the sender, and host information describing the sender personal information required for authentication processing. A language expression method for protecting and managing multimedia content. The method of claim 12, wherein the destination peer information is A method of expressing language for protecting and managing multimedia content, characterized in that it is described with address information indicating the position information of a peer to respond to a request of a source peer in inter-peer communication. The method of claim 12, wherein the trust session information is A method of describing a mechanism and tool for creating a trust session between peers, and a time expression expressed by the time information represented by the time of the starting and ending points at which the trust session is formed. The method of claim 13, wherein the method element of the source peer For protecting and managing multimedia content, characterized by the name of the mechanism or tool used to constrain the digital item, an identifier indicating what URI type the method of the prescribed name is, and the location of the identifier. Language expression method. The method of claim 13, wherein the terminal performance component A method of expressing language for protecting and managing multimedia content using borrowable elements in MPEG-4 IPMP. 16. The method of claim 15, wherein the method element of the trust session is And a name of a mechanism and tool for creating a trust session, an identifier indicating a URI type of the prescribed name, and a location for the identifier. The method of claim 1, wherein the step of expressing IPMP information as the transfer element is A language expression method for protecting and managing multimedia content, which is applied to a negotiation process of a query, a request, and a response made between peers. 20. The MPEG-21 system according to any one of claims 1 to 19, wherein IPMP information is added to a digital item by a language expression method for protecting and managing the multimedia contents. 20. The digital multimedia distribution system according to any one of claims 1 to 19, wherein IPMP information is added to a digital item by a language expression method for protecting and managing the multimedia contents.  In the language expression apparatus for protecting and managing multimedia contents during the content life cycle of generation, consumption, delivery, editing, etc. in the distribution process of digital multimedia contents using wired and wireless networks, An IPMP manager which receives a digital item from the outside, detects an added constraint, and performs IPMP processing; Log engines that log IPMP functions used or respond to incident reports; And And a tool manager for locating and providing a tool required for IPMP processing by the IPMP manager. 23. The system of claim 22 wherein the IPMP manager is A job scheduler that manipulates / drives communication between peers / peers, and extracts the constraints / protective elements of the received digital items to perform XML parsing; An IPMP analyzer for parsing the IPMP elements extracted from the job scheduler; And And an IPMP database for storing the IPMP information extracted by the job scheduler. 23. The method of claim 22, wherein the tool manager A tool database for storing tools required for IPMP processing; And And a tool finder that searches for the tool according to the request of the IPMP manager and provides the tool to the IPMP manager.

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