KR101306819B1 - Drm converter system and platform server system and operating methods thereof - Google Patents

Abstract

The present invention relates to a digital copyright conversion system, a platform system, and an operation method, and converts a source DRM content into a target DRM content that can be played on a target terminal through a process of converting the source DRM content into a standard attribute by a fish agent located in a client area. As a result, there is an effect of reducing the load of the entire platform system and distributing resources, and a content sharing effect of immediately using contents provided by a plurality of CSPs in a specific terminal.

DRM, INTEROPERABILITY, RIGHT, CONVERTER

Description

Digital copyright conversion system and platform system and operation method {DRM CONVERTER SYSTEM AND PLATFORM SERVER SYSTEM AND OPERATING METHODS THEREOF}

1 is a view illustrating a relationship of use between a conventional content and a terminal playback standard difference

2 is a state diagram in which a conventional DRM cannot be reproduced in another terminal;

3 is a conceptual diagram illustrating DRM conversion according to the present invention;

4 is a functional diagram of a digital copyright conversion system according to the present invention;

5 is a flowchart illustrating a method of operating a digital copyright conversion system according to the present invention;

6 is a functional configuration diagram of a platform system according to the present invention,

7 is a detailed functional configuration diagram of a converter agent according to the present invention;

8 is a detailed functional configuration diagram of a fish agent according to the present invention;

9 is a flowchart illustrating a method for operating a platform system according to the present invention;

10 is a conceptual diagram of reproducing specific DRM contents of the present invention in each terminal.

          ** Explanation of symbols on the main parts of the drawing **

100: source CSP 110: platform system

120: target CSP 130: source terminal

140: target terminal 150: public network

160: mobile communication system 170: mobile terminal

The present invention relates to a digital copyright conversion system, a platform system, and an operation method. In particular, the platform system converts and provides source DRM content to target DRM content, so that a user can share various contents as desired DRM content. It is about.

DIGITAL RIGHT MANAGEMENT (DRM) is a technology that prevents illegal copying and distribution of multimedia digital contents such as audio and video generated by digital technology without the permission of the copyright holder.

Digital contents are finally used in computers, PDAs, portable terminals, MP3 players, set-top boxes, and the like (hereinafter terminals). Recently, the use of digital contents is rapidly expanding.

Since DRM, which protects the copyright of digital contents, does not yet have a unified standard, several DRM schemes exist and are implemented with unique technologies that are distinguished for each DRM scheme and are not compatible with each other.

Important attributes of digital content include specifications such as format and encoding level, and are a very important factor in determining whether or not playback is possible in a terminal.

In one embodiment, the format specifications of the digital audio content, such as AVI, WMA, RA, MP3, and the like, encoding standards, such as 192 Kbps, 384 Kbps, 1 Mbps, and can be produced in a variety of playback standards by selection Can be.

Therefore, even if the content of the same content, the type, format, encoding standard, etc. of the DRM can be made and supplied differently.

The provision of the digital contents of the DRM for free and for free is referred to as a content service provider (CONSPTS SERVICE PROVIDER: CSP).

These CSPs provide digital contents to which one or two types of DRMs are applied, and only one or two types of formats and encoding standards of the contents are supported. In particular, some CSP contents are played only on terminals designated by the CSP. .

FIG. 1 is a diagram illustrating usage relations based on a difference between playback contents of a conventional content and a terminal. Since each CSP provides a different DRM type, format, and encoding of the content, the types of terminals should be different and designated as specific terminals. In some cases.

Each CSP uses a specific type of terminal or a specific type of terminal to increase content purchase loyalty.

In other words, unless the terminal is associated with the CSP providing the content, the content cannot be used to increase the loyalty of the customer.

For example, the user 1's terminal may use the content provided by CSP 1 in the A method DRM and MP3 data formats, and to use the content provided by the CSP 2, as shown on the right side of the user 2. Since an additional terminal must be purchased, an additional expensive terminal must be purchased to use the content.

Such market conditions hinder the distribution of content, and the user has a problem in that the usable content and the unusable content are generated by the type of content and the type of DRM.

2 is a diagram illustrating a state in which a content cannot be reproduced in a terminal when a DRM type is different as a conventional example.

Each carrier (CSP) uses its own DRM to differentiate itself from other carriers and has limited content. For example, content from Disneyland works is provided by CSP 1, not by CSP 2. In 3, there is a difference in the distribution of contents ownership due to the inability to supply Latin music.

If the content of the DRM type, data format, encoding standard, etc. provided by the connected CSP cannot be reproduced by using the current hardware and software of the terminal, the terminal should be changed since it is not compatible.

In particular, portable terminals generally support one or two types of DRM due to limitations in hardware and software, power consumption, and the like.

In addition, even in the content of a reproducible data format, there is a difference in the encoding level due to constraints such as the number of clocks of the microprocessor and the processing speed and amount of the memory.

Even in the case of a desktop or a notebook computer, it is difficult to support all kinds of DRMs, and digital contents that do not support playback standards cannot be used even if purchased, thereby reducing the selection range of contents available in one terminal.

In order to solve this problem, it is possible to create and manage the content data as many as the number of contents multiplied by the number of cases by DRM type, data format, encoding type, etc., but in theory, As many DRM servers should be provided as DRM types, it can be seen that this is not feasible.

Therefore, in order to expand the content market and provide smooth services, it is necessary to develop a DRM Interoperability Platform (DIP) that supports various DRM applied contents.

The present invention converts contents of DRMs having different playback specifications into a designated DRM method by the platform system. In particular, the distributed agent process is performed by a fish agent in the client area. The purpose of the present invention is to provide a digital copyright conversion system, a platform system, and an operation method which reduce the load and allow the user to use all contents at a low cost.

The present invention devised to achieve the above object, the source CSP for providing the source DRM content at the request of the platform system; A platform system for inputting source DRM content from a source CSP, converting and recording and providing target DRM content in a server area and a client area; A target CSP providing source DRM content at the request of the platform system and requesting conversion of the source DRM content into target DRM content; The present invention proposes a configuration that includes a target terminal for requesting a platform system to convert source DRM content into target DRM content, and receive and play the same.

In addition, the present invention devised to achieve the above object, the process of inputting the source DRM content from the CSP, when converting the DRM of the content by the platform system; Updating the version of the platform system if it is necessary to compare and update the DRM version of the input content with the conversion program version of the platform system; We present a configuration that includes the process of decrypting the DRM of the input content to generate the original content, convert it to standard attributes, and convert it to target DRM content and output it.

In addition, the present invention devised to achieve the above object, the database server for recording the DRM playback standard information of the terminal and the content mapping information of each CSP, and the content information converted to the target DRM by the CMS method; A converter agent for inputting source DRM content from the CSP, converting the target DRM content into a target DRM content, recording the data in a CMS manner, and providing the target terminal to a target terminal; A fish agent converting the source DRM contents into target DRM contents, recording them in a secure state in its own storage area, providing the target terminal to the target terminal, and located in the client area; An update server for receiving and updating the DRM program of the converter agent and the fish agent from the CSP with the latest version; We present a configuration that includes a DI server that controls and monitors the operation of the fish agent, authorizes data, and records log information.

In addition, the present invention has been made in order to achieve the above object, the source process receiving a DRM conversion of the source content from the target terminal by the D-I server and receiving the source DRM content from the source CSP; Updating the agent by controlling the update server if the version of the provided source DRM content is compared with the program version of the agent; Checking the DRM specification information of the target terminal and converting the source DRM content into the target DRM content; The configuration includes a process of recording the converted target DRM content in a database method on a database server and outputting the same to a target terminal.

Hereinafter, a digital copyright conversion system, a platform system, and an operation method according to the present invention will be described with reference to the accompanying drawings.

3 is a conceptual diagram illustrating DRM conversion according to the present invention, FIG. 4 is a functional configuration diagram of a digital copyright conversion system according to the present invention, and FIG. 5 is a digital copyright conversion according to the present invention. 6 is a functional diagram of a platform system according to the present invention, FIG. 7 is a detailed functional diagram of a converter agent according to the present invention, and FIG. 8 is a detailed function of a fish agent according to the present invention. FIG. 9 is a flowchart illustrating a method of operating a platform system according to the present invention, and FIG. 10 is a state diagram of playback of each terminal regardless of the source DRM content of the present invention.

Referring to Figure 3, the operational concept of the present invention, the first DRM CSP server provides the DRM content, the second A DRM CSP server provides the A DRM content, the third B The DRM CSP server provides only B DRM content.

Also, the DRM terminal (DEVICE or TERMINAL) plays only DRM content, the A DRM terminal plays only A DRM content, and the B DRM terminal plays only B DRM content.

For example, the A DRM terminal cannot reproduce DRM content and B DRM content.

The present invention relates to a technology for converting DRM contents of each CSP into DRM contents that can be reproduced by each terminal and using DRM Interoperability (DI) PLATFORM by a server of a DRM INTEROPERABILITY and a PC CLIENT.

Referring to Figure 4, the digital copyright conversion system according to the present invention will be described: a source CSP (100) for providing source DRM content at the request of a platform system;

A converter agent (MASTER AGENT) for converting the source DRM content into a target DRM content and providing the terminal to the terminal (CSP) or the terminal and controlling the recording to the database server in a CMS manner that supports both CASHING and SWAPPING; A PC agent that converts source DRM content into target DRM content, provides the terminal to the terminal, and records the content in a security management state; It includes a DI server that provides operation information to the fish agent, controls the entire operation, and records log information. The source DRM is input from the source CSP 100, converted into a target DRM, recorded, and output. A platform system 110;

A target CSP 120 requesting, receiving, and using the source DRM content converted into the target DRM content in the platform system 110;

A target terminal 140 which requests, receives, and uses the source DRM contents by the platform system 110 to convert the source DRM contents into target DRM contents;

A public network 150 providing a platform system 110 with a connection path to another source CSP, a data system, a communication system, etc .;

A mobile communication system 160 connected to the platform system 110 to convert the DRM content into a target DRM content, and to request and download the DRM content;

The mobile terminal 170 is connected to the mobile communication system 160 to download and play the selected content.

In addition, the source terminal 130 may provide the source DRM content like the source CSP 100 and may be the target terminal 140.

Referring to Figure 5, when explaining the operation method of the digital copyright conversion system according to the present invention, the platform system 110 checks whether a signal for requesting the conversion of the DRM of the specified content is input (S100), the source CSP (100) Or (S110) inputting source DRM content to the platform system when requesting DRM conversion from the source terminal 130;

It is determined whether the version of the platform system needs to be updated by comparing the DRM version of the input content with the version (VERSION) of the DRM conversion operation program included in the converter agent and the fish agent of the platform system 110 (S120). ; If it is determined that the version of the platform system needs to be updated, downloading and updating the latest version of the DRM conversion program from the source CSP (S130), updating the corresponding DRM version of the platform system;

Decrypting the input content to generate an original content file before applying the DRM (S140); Converting or mapping a right (permission) property by DRM of the original content into a standard property (MAPPING) (S150); The standard attribute content is converted into the target DRM content (S160) and outputs.

4 and 5, the digital copyright conversion system and its operation method according to the present invention will be described in detail.

The present invention relates to means for converting DRM-applied content that cannot be directly played by a target terminal that plays selected content to content of a directly playable DRM.

The present invention also relates to a system and a method for using specific DRM content not directly supported by a target terminal.

In addition, the CSP enables users to select a wide range of content while maintaining the current content providing form, thereby activating distribution.

In addition, the DRM conversion of the content is selectively converted in the client area and the server area.

In addition, even in the case of contents of the same DRM, contents which cannot be reproduced due to differences in data format, encoding level, etc. are reproduced.

Referring to the operating method of such a system in detail, the target terminal 140 including the target terminal CSP 120 or the public network 150 and the mobile terminal 170 connected through the mobile communication system 160, The client accesses the platform system 110 and requests the designated DRM content to be converted into DRM content that can be reproduced (S100).

The platform system 110 may be a source CSP 100 connected directly to the Internet, a wired or wireless public network, or input source DRM content from the source terminal 130 (S110).

The platform system 110 confirming the program version (VERSION) of the input source DRM content, checks and compares the corresponding program version of each agent that reads and analyzes the input DRM content.

As a result of comparing the versions, when the agent version of the platform system 110 is low and needs to be updated to the latest version (S120), the source CSP 100 is accessed to receive the latest version program of the corresponding DRM and update (UPDATE). (S130).

The platform system 110 updated with the latest version of the DRM reads and decodes the source DRM content and generates an original file before the DRM is applied (S140).

These original files contain the attributes of RIGHT OBJECT (RO) granted by DRM, and the attributes of usage rights or permissions include, for example, the total time, expiration date, and total permission to use the content. Number of times, remaining number of times, and so on.

The platform system decodes and removes the source DRM from the source DRM content, and converts the content converted into the original file into a content file of standard attribute (S150).

Among the attributes (RO) assigned by the source DRM, some standard attributes cannot be converted, and the corresponding database is searched and mapped to the same or as similar attributes.

At this time, the platform system 110 confirms the playback specification including the target DRM information, data format, encoding level, etc. of the target CSP 120 or the target terminal 140 by database search.

The content of the standard attribute is converted into the content of the target DRM that can be reproduced by the target CSP 120, the target terminal 140, or the mobile terminal 170 by the platform system 110, and is provided or output (S160). .

Therefore, the terminal can select and play desired DRM content.

6 to 8, when describing the platform system according to the present invention, the playback specification information of the terminal and the content information converted into the target DRM are recorded by the CMS method, and the content mapping information of each provider (CSP) is recorded. Database server (DI DATA BASE)

Input the source DRM content from the CSP, convert it to the target DRM content, record it in CMS, and provide it to the target CSP or the target terminal, which decodes the DRM of the input source content and converts it into the original content including the property (RO). A DRM input unit; A license mapper that converts the attributes of the original content into standard attributes; It consists of a DRM output unit that converts the content of the standard attribute to the target DRM content and outputs, and when the fish agent does not perform the DRM conversion in the client area, the converter agent (DI CONVERTER AGENT) is located in the server area and replaced,

Converting the source DRM content into the target DRM content, recording in a secure state, and providing the target DRM content to the target terminal, the DRM input unit for decrypting the DRM of the input source content and converting the source DRM content into the original content; A license mapper that converts the attributes of the original content into standard attributes; It consists of a DRM output unit that converts the contents of standard attributes into target DRM contents and outputs them, and is connected to the converter agent of the server area through the fish client and the public network via the network and is located in the client area to perform DRM conversion. AGENT),

An update server (DI UPDATE) for receiving and updating the DRM program of the converter agent and the fish agent from the CSP as the latest version, and

A management server (DI ADMINISTRATOR) which controls the update server to maintain and manage the program of each functional unit to the latest version, and to remotely control and manage the platform system based on the web,

When the fish agent is located in the client area and is remotely connected, the fish client (DI PC CLIENT) transmits and receives operation information and control signals without error.

It is a configuration that includes a DI server that applies operational information and control signals to the fish agent and records log information.

The DRM input unit and the DRM output unit of the converter agent and the fish agent are composed of a plurality of functional units for inputting and outputting respective DRM system content signals.

Referring to FIG. 9, a method of operating a platform system according to the present invention is described by the D-I server to receive a request for conversion of designated DRM content from a target CSP or a target terminal (ST100), and to retrieve a specified source DRM content from a source CSP. (ST110) source process that is provided by

Comparing the version of the source DRM content with the DRM program version installed in the agent by the D server (ST120); If the version of the source DRM content is high, requesting a version update of the agent program by controlling the update server (ST130); Receiving and providing operation program information of the source DRM from the source CSP by the update server (ST140); Updating the agent by the source DRM management program (ST150);

Searching the database by the D-I server and confirming the DRM information of the target terminal (ST160), and applying the DRM information of the target terminal and the source DRM content to the agent and requesting conversion to the target DRM content (ST170); Decrypting the source DRM content by the agent, generating the original content, converting it into a standard property, and converting it into a target DRM content (ST180);

Notifies the D-I server that the agent has been converted to the target DRM content (ST190); Recording the DRM content converted by the agent under the control of the DI server in a CMS manner (ST200); And outputting the converted DRM content to the target terminal (ST210).

Hereinafter, the platform system and its operation method according to the present invention will be described in detail with reference to FIGS. 5 to 9.

The platform system 110 may be located in a server area and, by selection, may separately separate the fish agent 114 and place it in a client area, and may be connected through a public network including the Internet.

The management server connects and controls and manages the platform system 110 on a web basis, and maintains and manages each program of the system to be installed with the latest version.

The data server records the playback specification including the DRM of the terminal and is applied from the converter agent 112 and records the converted target DRM content in a CMS (CONTENTS MANAGEMENT SYSTEM) method that supports both the CASHING method and the SWAPPING method. do.

The terminal includes an MP3 player, a PC, a portable terminal, a PDA, and the like.

The converter agent 112 and the fish agent 114 input and decrypt the source DRM contents, convert or map the contents into standard attribute contents, encrypt and convert the target DRM contents, and record them, and output them to a designated target terminal. Is the same.

Referring to FIG. 7 and FIG. 8, the configuration of the converter agent and the fish agent will be described in more detail. A number of functional units for inputting source DRM content are provided as many as DRM types.

That is, no matter what DRM content is applied, each readable DRM input module is provided with as many as the number of DRM types present.

In addition, even in the case of the DRM output module is provided as many as the number of the type of DRM present.

The D-I server under the control of the management server monitors the DRM input unit (DRM IN) and the output unit (DRM OUT), updates the program with the latest version, and maintains and manages the latest version in each functional unit.

The DRM input module generates a source content file before the DRM is applied, inputs the source DRM content and removes the DRM, and at the same time, the attributes of the rights or ROs applied by the DRM were applied. Is detected.

The license mapper (LICENSE MAPPER) provided in each of the agents 112 and 114 converts the attribute of the original content including the usage right RO into the authority of the standard attribute.

If the conversion is not possible in the process of converting the source property to the standard property, the database is searched and mapped to the similar property. The similar attribute includes a period of use, a number of times of use, an expiration date, or a number classified by each DRM.

For example, among the attributes, the specific DRM is limited to the usage time, but the other DRM may be limited to the frequency of use or the expiration date.

As another example, a number for classifying the same song of the same singer in each DRM may be different from each other.

In this case, the attribute needs to be mapped to search the database server, find and replace the corresponding one, or replace with a similar attribute.

At this time, the D-I server searches the database server, checks the DRM information of the target terminal (including the target CSP), and applies it to the converter agent and the fish agent, respectively.

The content converted to the standard attribute by the license mapper is applied to the DRM output unit.

At this time, the DRM output unit, the DRM output unit is selected based on the target DRM information retrieved by the D-I server.

The DRM output unit converts the content of the input standard attribute into the content encrypted by the target DRM.

The converter agent under the control of the D-I server records the content converted into the target DRM to the designated target terminal while simultaneously recording the content converted into the target area of the database by the CMS method.

In addition, the fish agent under the control of the D-I server records the content converted into the target DRM in its own area in a secure state and outputs the same to the designated target terminal.

The fish agent may be remotely connected through a public network including the Internet, located in the client area, through a master agency and a fish client located in the server area.

At this time, according to the policy (POLICY) of the CSP operating the platform system 110, the fish agent 114 that can be located in the client area can be operated or suspended.

When the operation of the fish agent 114, which can be located in the client area, is suspended, the master agency functions to convert the source DRM content into the target DRM content and output or provide the designated target terminal in place of the function. .

The method of providing the target DRM content converted by the fish agent or the converter agent to the target terminal is transmitted to the infrared, Bluetooth, mobile communication, wired, etc. by the provided interface or modem.

Referring to FIG. 9, the operating method of the platform system will be described in more detail. A signal for requesting the conversion of the designated DRM content from the target terminal including the target CSP into the target DRM content is recognized by the DI server of the platform system (ST100). ).

The D-I server requests the provision of the source DRM content from the source CSP and is provided by a download method (ST110).

The management server monitors each program version of the platform system, compares the version of the input source DRM content with each other, and determines whether it needs to be updated (ST120), and if necessary, controls the update server to update. Request (ST130).

The update server requests the source CSP to provide the latest version information of the corresponding DRM, receives it by downloading or the like (ST140), and updates the version of the agent (ST150).

The D-I server searches the database server, checks DRM of the target terminal including the target CSP, and playback specification information including the data format and encoding level (ST160), and sends the target DRM content to the agents 112 and 114. Request conversion (ST170).

The fish agent including the converter agent decrypts the input source DRM content, so that the source information and the attribute information of the usage right from which the source DRM is removed are converted into a file, converted or mapped to standard attribute information, and the designated target DRM content. In step ST180, the ID server notifies that the conversion to the target DRM content is completed, and receives the corresponding control (ST190).

The converted target DRM content is recorded in the database server in a CMS manner by a converter agent under the control of the D-I server, and recorded in its own memory area in a secure state by the fish agent (ST200). It is output or provided to the terminal (ST210).

As such, the information recorded in the allocated memory areas of the database server and the fish agent has an advantage of being immediately provided by a search without a conversion process when there is a corresponding content request from another target terminal.

Referring to FIG. 10, a description will be given of a state in which a terminal can play back data regardless of the source DRM content of the present invention. A provider CSP1 encrypts and provides an MP3 data format with an A scheme DRM and 192 Kbps. Company B provides WMA data format contents encrypted with B type DRM and 128 Kbps.

Target terminals include computers, MP3 players, and portable terminals.

The computer can decrypt A and B DRM formats and play encrypted content in MP3 and WMA data formats, 192 and 128 Kbps.

The MP3 player decrypts the A system DRM and plays the MP3 data format, contents encrypted in 192 Kbps.

The mobile terminal (PHONE) decrypts the B-type DRM and plays back contents encrypted in WMA format, 128 Kbps.

According to the prior art, as an example, the MP3 player can use and play the content provided by the A company, and the mobile terminal can use and play the content provided by the B company. All contents of operators could be used and played.

However, when using the platform system of the present invention having a DI server, a converter, an update server, and the like, there is an advantage in that each DRM content is shared by all terminals.

According to the present invention having the above-described configuration, since the contents of the DRM system which are different between the CSPs are converted into the reproduction standard of the terminal, the terminal has a convenient effect of using various contents in a shared state.

In addition, since the CSP can provide the provided content to any kind of DRM terminal, the transaction of the content is activated, thereby reducing the distribution cost.

In addition, since the DRM is converted by the fish agent in the client area, there is an industrial use effect of distributing resources and reducing loads throughout the system.

In addition, there is a convenient effect of using the same DRM to play content having different reproduction standards such as data format and encoding level.

Claims (21)

A source CSP providing source DRM content at the request of the platform system; A platform system for inputting source DRM content from the source CSP, converting and recording and providing target DRM content in a server area and a client area; A target CSP providing source DRM content at the request of the platform system and requesting conversion of the source DRM content into target DRM content; A target terminal for requesting the platform system to convert source DRM content into target DRM content, and receiving and playing the target DRM content; Including, The platform system, A converter agent for converting the source DRM content into a target DRM content and providing the target CSP or the target terminal to the target terminal and recording the data in a database server in a CMS manner that supports CASHING and SWAPPING; A fish agent converting the source DRM content into a target DRM content, providing the target DRM content to a target terminal, recording the secure data in its own area, and located in a client area; A die server controlling the operation of the fish agent, recording log information, and transmitting data; Digital copyright conversion system comprising a. The method of claim 1, A mobile communication system accessing the platform system and transmitting the converted target DRM content to a mobile terminal; Digital copyright conversion system is configured to include more. delete The method of claim 1, wherein the target terminal, Digital copyright conversion system, characterized in that the configuration containing at least one of the infrared module, Bluetooth module, mobile communication module, wired communication module. When converting the DRM of the content by the platform system, inputting source DRM content from the CSP; Updating the version of the platform system if it is necessary to compare and update the DRM version of the input content with the conversion program version of the platform system; Decoding the DRM of the input content, generating original content, converting the content into standard attributes, and converting the target content into target DRM content and outputting the converted content; Operation method of the digital copyright conversion system comprising a. The method of claim 5, wherein the updating process, Comparing the DRM version of the input content with the versions of the DRM conversion programs provided in the master and the fish agent of the platform system to determine whether it is necessary to update the version of the platform system; If it is determined that the version of the platform system needs to be updated, downloading and updating the latest version of the DRM conversion program from the CSP; Operating method of the digital copyright conversion system comprising a. The method of claim 5, wherein the output process, Generating original content by decoding the DRM of the input content; Converting an attribute by DRM of the original content into a standard attribute; Converting the standard attribute contents into target DRM contents and outputting the converted target attribute contents; Operating method of the digital copyright conversion system comprising a. The method of claim 7, wherein If you can't convert to the standard attribute, And searching the database server for mapping to a similar attribute including a period of use, a number of times of use, an expiration date, or a number classified in each DRM. A database server for recording the DRM reproduction standard information of the terminal and the content mapping information of each CSP, and for recording the content information converted into the target DRM by a CMS method; A converter agent inputting the source DRM content from the CSP, converting the target DRM content into a target DRM content, recording the data in a CMS manner, and providing the target terminal to a target terminal; A fish agent that converts the source DRM content into a target DRM content, writes it to its own storage area in a secure state, provides it to a target terminal, and is located in a client area; An update server for receiving and updating the DRM programs of the converter agent and the fish agent from the CSP to the latest version; A server for controlling and monitoring the operation of the fish agent, authorizing data, and recording log information; Platform system is configured to include. The method of claim 9, wherein the converter agent, A DRM input unit which decodes the input source DRM content and converts the source DRM content into original content; A license mapper for converting an attribute of the original content into a standard attribute; A DRM output unit for converting the contents of the standard attribute into the contents of the target DRM; Platform system comprising a configuration comprising a. The method of claim 9, wherein the fish agent, A DRM input unit which decodes the input source DRM content and converts the source DRM content into original content; A license mapper for converting an attribute of the original content into a standard attribute; A DRM output unit for converting the contents of the standard attribute into the contents of the target DRM; Platform system comprising a configuration comprising a. The method of claim 10 or 11, wherein the DRM input unit, And a module for inputting and decoding the source DRM content is provided for each DRM scheme. The method of claim 10 or 11, wherein the DRM output unit, And a module for inputting the content of the standard attribute and converting the content of the standard attribute into the content of the target DRM is provided for each DRM scheme. The method of claim 9, wherein the fish agent, And controlling the die server to connect to a converter agent in a server area through a public network while being located in a client area. A source process of receiving a DRM conversion of the source content from the target terminal by the D-i server and receiving the source DRM content from the source CSP; Comparing the provided version of the source DRM content with a program version of the agent to update the agent by controlling an update server if the version is new; Checking the DRM specification information of the target terminal and converting source DRM contents into target DRM contents; Recording the converted target DRM content to a database server in a CMS manner and outputting the same to a target terminal; Operating method of the platform system configured to include. The method of claim 15, wherein the updating process, Comparing, by the DI server, a version of source DRM content with a DRM program version installed in an agent; Requesting to update the program version of the agent by controlling an update server if the version of the source DRM content is high; Requesting and receiving program information of a source DRM from a source CSP by the update server; Updating an agent by the source DRM program; Operating method of the platform system comprising a. The method of claim 15 or 16, wherein the updating process, And comparing the version of the source DRM content with the version of the DRM program installed in the agent and confirming the same version. The method of claim 15, wherein the conversion process, Searching the database by the D-i server and confirming DRM information of a target terminal; Requesting to convert the identified DRM information and the source DRM content of the target terminal to the agent into target DRM content; Decrypting, by the agent, source DRM content, generating original content, converting it into a standard attribute, and converting the target DRM content into a target DRM content; Operating method of the platform system comprising a. The method of claim 18, wherein the converted target DRM content, If the conversion agent occurs in the database server in the CMS method, and if the occurrence of the fish agent operating in the platform system, characterized in that to record in its own memory area in a secure state. The method of claim 15, wherein the output process, Notifying the D-i server that the agent has been converted to target DRM content by the agent; Recording the DRM content converted by the agent controlled by the D-I server in a CMS method; Outputting the converted DRM content to a target terminal; Operating method of the platform system, characterized in that it is included. The method of claim 20, wherein the CMS scheme, Operating method of the platform system, characterized in that both the CASHING and SWAPPING is recorded in the database server.

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