KR20030004206A - Method for implementing p2p based wired and wireless drm system for digital content distribution - Google Patents

Abstract

PURPOSE: A method for constructing a wire/wireless integrated DRM(Digital Rights Management) system based on the P2P(Peer-to-Peer) for distributing the digital contents is provided to use or distribute the digital contents for the mobile communication by using a mobile device as well as to distribute the DRM contents between PCs using a wired Internet network. CONSTITUTION: An original source and the authority information are uploaded to a packager through the Internet network in order to secure the rights for the digital contents created by a user. The packager transmits the authority information to a clearing house, and packages the source and the authority information. In order to use the charged DRM contents, the PC and a mobile terminal such as a PDA(Personal Digital Assistant) or a cellular phone search and download the desired contents by connecting to a CDS(Contents Distribution Server) or a wire/wireless linked P2P network(S7-S9). The contents are used through an exclusive viewer/player embedded into the terminal after paying the charge and obtaining a license(S10-S13).

Description

METHOOD FOR IMPLEMENTING P2P BASED WIRED AND WIRELESS DRM SYSTEM FOR DIGITAL CONTENT CONTRIENT CONTRIENT DISTRIBUTION}

The present invention relates to a P2P-based wired / wireless integrated digital rights management (DRM) system construction method for digital content distribution, and in particular, DRM system via wired Internet as well as download digital content to which DRM is applied through a wireless network using a mobile phone or PDA The present invention relates to a method for constructing a P2P-based wired / wireless integrated DRM system for digital content distribution that can be used after payment and can be retransmitted to another user through a P2P network of a wired or wireless network.

In general, DRM distributes content through the wired Internet, so clients that will use the content also become PCs connected to the wired network. DRM-applied content refers to content in which original original content (digital content such as pictures, photos, music, etc.) is inserted into original pure content (pictures, photos, music, etc.).

There are two ways to assign additional information (meta information), such as copyright, to the content. The first is a watermarking technique that inserts information into the content itself. It should be indistinguishable and should be able to extract the inserted information later even if other users arbitrarily modify the watermarked content. These contents can be viewed or heard by general viewers and players, but a separate program must be written to recognize and extract the inserted information. This watermarking technique cannot prevent unauthorized copying, but is very useful for identifying who is the original author of unauthorized copying, modification, and distribution. Another method is to insert in the header of the content, which is encrypted and packaged because the public can easily separate the header information. In this way, even if the packaged contents are copied without permission, the header information is encrypted, and thus becomes useless if the decryption key is not received through the license. Therefore, this method is a method commonly used in DRM because it shows the rights of original authors and prevents illegal use through unauthorized copying.

P2P is a peer-to-peer network that is different from the existing Server-Client concept. Until now, content distribution and services have been provided by general users through a server provided by a specific company through their PCs. The server provides services to all users, and the user requests services from the server as a client. .

This is in line with the existing system of strict separation between supplier and consumer. When a large number of clients are concentrated on the server, bottlenecks occur, the system is overloaded, or the service is determined by the server's capabilities. There was a problem that all users had a problem in receiving the service.

In contrast, P2P is not a provider and a consumer, and a computer is a supplier and a consumer, that is, a server and a client. These types of application services include Napster, Gnutella, and Sori, which resulted in the rapid spread of free content.

There are three types of P2P systems, depending on their form. One is pure P2P, and there is no dedicated server in any form. It is like Gnutella or Sori Sea2. The centralized type keeps only the location and index information of each peer, and finds the location of the peer through this server when searching, and the actual transmission and reception of the content occurs between the peer and the peer without passing through the server. It is efficient for the search and management of peers. Napster and Sori are the methods, but if peers illegally distribute paid contents, legal measures such as server closure are made, so pure P2P type is preferred. In another form, there are several small servers in a hybrid form, which are connected in a hierarchical manner.

Figure 1a is a conventional DRM system showing a content distribution system via a general Internet network over the wire, Figure 1b shows a conventional wired P2P and Server-Client configuration diagram.

<Content source upload order>

1. The copyright holder, along with his copyright information, uploads the original source (digital content) to the packager through his PC connected to the wired internet network.

2. The Packager performs watermarking that inserts copyright information into the original source itself.

3. The packager encrypts copyright information and packages it in a watermarked content header.

4. The packaged content is uploaded to a content distribution server (CDS) via the Internet.

5. At the same time, copyright information corresponding to this content is transmitted to the Clearing House.

<Contents Procedure>

1. Use your PC to access the CDS connected to the Internet.

2. Search the CDS content list and download the desired content.

3. Payment for the downloaded content will be paid through the Clearing House.

4. Obtain a license with a decryption key at the Clearing House.

5. Use (view or listen) the downloaded content.

<Billing order>

1. The user transmits usage information on the downloaded content to the Clearing House.

2. In the Clearing House, the fee is determined according to the usage type and the corresponding content.

3. The user pays the price.

4. The Payment Server collects the fee determined by the Clearing House from the user.

5. The payment server distributes the charged fee to the original author, content processor, content distributor, and network operator according to the distribution policy.

<Redistribution and Use Order>

1. Redistribute the content you download (whether it has a license or not) to other users through your PC connected to the Internet, not the Content Distribution Server (CDS).

2. The user downloads the DRMized content from another user.

3. Pay for the downloaded content according to the usage type through Clearing House.

4. Obtain a license with a decryption key at the Clearing House.

5. Use (view or listen) the downloaded content.

However, the existing wired Internet-based Digital Rights Management (DRM) system is suitable for PC contents, and there is a problem in that mobile contents cannot be used or redistributed through mobile terminals, and as the rapid spread of free contents is achieved through P2P, In order to spread paid content, redistribution should be done through P2P network, not the existing server-client concept, but current DRM does not.

The present invention has been proposed to solve the problems of the prior art, and an object of the present invention is to perform the DRM on the existing wired Internet to be linked to each other over the air and to distribute paid content as a server-client concept on the existing wired Internet. In addition to the wired / wireless interworking P2P format, mobile content can be downloaded and used in addition to the existing DRM system using a wired internet network using mobile devices such as PDAs and mobile phones. In the distribution of wired / wireless interworking DRM contents, the server of the existing wired network is redistributed to the client as well as the method of grafting the existing wired P2P network, which is very advantageous for content distribution, to the DRM system, and also supports the wireless P2P as well as the existing wired P2P network. Metaphor Built P2P-based wired and wireless unified DRM system for digital content distribution method suitable for integrated content business line to provide.

Figure 1a is a diagram of a conventional digital rights management system (DRM).

Figure 1b is a conventional Server-Client and P2P system configuration.

Figure 2 is a wired and wireless integrated DRM system system configuration according to the present invention.

3A to 3B are flowcharts illustrating a source registration and content usage method of a wired / wireless interworking DRM system according to an embodiment of the present invention.

4 is a DRM content viewer screen of a mobile communication device (Phone, PDA) according to the present invention.

<Explanation of symbols on the main parts of the drawing>

1: Packager 2: Content Distribution Server (CDS)

3: clearing house 4: payment server

5: Client / Superdistribution

DRM: Digital Rights Management

In order to achieve the object of the present invention, the present invention comprises a packager, content distribution server, clearing house, payment server, client / super-distribution in wired and wireless Internet and P2P network, and provides digital content such as photos, cartoons, music, etc. In wired / wireless integrated digital rights management (DRM) system for PC-to-PC, PC-to-mobile, and mobile-to-mobile for paid distribution: (a) Securing the rights to digital content created by oneself Uploading the original source with the copyright information to the packager via an internet network connected to a PC for transmitting the copyright information to the clearinghouse and packaging the source and copyright information; And (b) access the content distribution server (CDS) through a mobile terminal such as a PDA or a phone as well as a PC to use the paid DRM content, or access a wired / wireless interworking P2P network to search for desired content and then Peer-to-peer (P2P) based wired / wireless integrated D. R. for digital content distribution comprising the step of downloading to the terminal and using the content through a dedicated viewer / player embedded in the terminal after payment and license acquisition. It provides a method of building an M (DRM) system.

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

Referring to FIG. 2, the wired / wireless integrated DRM system according to the present invention includes a packager (1), a content distribution server (CDS) (2), a clearing house (3), and a payment server ( It consists of a Payment Server (4) and a Super-Distribution (5).

A packager (1) for encapsulating and uploading a source (original digital content) from a wired Internet network using a copyright holder's own PC with the copyright holder's copyright information; A storage location for distributing the packaged content to the content distribution server (CDS) 2 and distributing it to various users, and for retrieving and downloading the users; A clearing house (3) for storing copyright information received from the packager separately from the packaged content and managing license information and billing information when a user requests a license for use after downloading the content; A payment server 4, which is responsible for actually charging the user and distributing it to related parties such as the original author and the content provider according to the result processed by the clearing house 3; Super user who downloads the desired content from the content distribution server (CDS) 2, obtains the billing and license through the clearing house 3, and then redistributes the content downloaded by the general user to another user. It consists of distribution (5).

3A to 3B are flowcharts illustrating a method for establishing a DRM system in a wired / wireless network according to an embodiment of the present invention.

Packager, Content Distribution Server, Clearing House, Payment Server, Client / Super-Distribution in the wired / wireless internet and P2P network. In PC-to-PC, PC-to-mobile, and mobile-to-mobile integrated DRM (Digital Rights Management) system for distributing digital contents such as comics and music for a fee: Digital contents created by oneself Uploading the original source with the copyright information to the packager via an internet network connected to a PC to secure a right to the packager, the packager transmitting the copyright information to the clearinghouse and packaging the source and copyright information; And (b) access the content distribution server (CDS) through a mobile terminal such as a PDA or a phone as well as a PC to use the paid DRM content, or access a wired / wireless interworking P2P network to search for desired content and then After downloading to the terminal and paying the fee and obtaining the license, the content is used through a dedicated viewer / player built into the terminal.

Referring to FIG. 3B, the mobile terminal accesses the P2P network to use the paid DRM content (S7) and finds the super-distributions connected to the peer-to-peer (P2P) through a wired or wireless network. Searching for the desired content (S8, S9); Downloading and storing the content retrieved from the wired / wireless P2P network to its mobile terminal (S10); Accessing the clearing house to the mobile terminal and transmitting various information (content ID in a content distribution server (CDS), content usage method, etc.) of the downloaded and received user authentication (S11); The clearing house requesting the mobile terminal for the charging thereof based on this, and the user obtaining a license after paying a fee to the mobile terminal (S12); And the mobile terminal uses the content through a built-in dedicated viewer / player (S13).

4 shows a DRM content viewer screen of a mobile communication device (Phone, PDA) according to the present invention.

Unlike the general DRM system, the wired / wireless integrated DRM system according to the present invention considers not only a PC user but also a user of the mobile communication device (Phone and PDA, etc.) through wired / wireless interworking, and content registration is performed in a remote packager through a PC. Searching for and downloading content and using DRMized content is a system that can be used as a mobile device via a wireless network as well as a PC. In addition, in performing the function of Super-Distribution, the downloaded user's PC is distributed as a server and the PC, PDA and Phone connected to the P2P network in connection with the wired / wireless interworking P2P network serves as a server that provides contents to other users. In addition, it can also act as a client that can download the contents of any PC, PDA, Phone users connected to the P2P network to their terminal.

Accordingly, the present invention refers to a DRM system applied in a wired / wireless integrated environment by applying mobile DRM and mobile P2P for distribution of mobile content to an existing DRM system.

As described above, the P2P-based wired / wireless integrated DRM system for digital content distribution according to the present invention is a wired / wireless integrated DRM system using mobile devices as well as DRM content distribution between PCs using the existing wired Internet network. It is a system that can be used and distributed.

Therefore, it is possible to spread the monetization work for all contents by utilizing the monetization characteristics of mobile contents that are relatively less objectionable to users as well as the generalization of the contents for general PC contents, which is possible through the technical support called DRM. In addition, although the existing monetization policy did not help the spread of paid content, it is expected to contribute to the spread of paid content by incorporating a P2P into the super-distribution of DRM.

Claims (3)

Packager, content distribution server (CDS), clearing house, payment server, client / super-distribution in the wired / wireless internet and P2P network. In the wire-wireless integrated digital rights management system (DRM) system of the PC-to-PC, PC-to-mobile, mobile-to-mobile method for distributing digital contents such as comics and music for a fee; (a) after uploading the original source with copyright information to the packager via an internet network connected to a PC to secure the rights to the digital content created by the user, the packager transmits the copyright information to the clearing house, Packaging copyright information; And (b) In order to use paid DRM content, access the content distribution server (CDS) with a mobile terminal such as a PDA or a phone as well as a PC or access a wired / wireless interworking P2P network to search for the content desired by the user and then use the terminal. Peer-to-peer (P2P) based wired / wireless integration for digital content distribution comprising the step of using the content through a dedicated viewer / player built into the terminal after the payment and license acquisition after downloading to the D.M.M. How to build a (DRM) system. The method of claim 1, wherein step (b) In order to use the paid DRM content, the mobile terminal accesses the P2P network (S7) and finds the super-distributions connected to the peer-to-peer (P2P) through a wired or wireless network and searches for the desired content among them. Steps S8 and S9; Downloading and storing the content retrieved from the wired / wireless P2P network to its mobile terminal (S10); Accessing the clearing house to the mobile terminal and transmitting various information (content ID in a content distribution server (CDS), content usage method, etc.) of the downloaded and received user authentication (S11); The clearing house requesting the mobile terminal for the charging thereof based on this, and the user obtaining a license after paying a fee to the mobile terminal (S12); And The mobile terminal comprises the step of using the content through the built-in dedicated viewer / player licensed content (S13), P2P-based wired and wireless integrated DRM system construction method for digital content distribution. The method of claim 1, Digital D content distribution, characterized in that it comprises a mobile DRM content dedicated viewer to check the license obtained from the clearing house in the mobile terminal such as PDA and Phone to decrypt the downloaded content and use the content. P2P based wired / wireless integrated DRM system construction method.