• ETRI Journal
• /
• v.29 no.4
• /
• pp.539-541
• /
• 2007

As the number of digital content service providers increases, a variety of digital rights management (DRM) systems appear without supporting interoperability. The lack of interoperability in DRM systems causes inconvenience to customers, especially when they want to play content through multiple devices manufactured by different vendors. In this letter, we propose a novel method to support interoperability between different DRM systems. The proposed technique aims to build an open framework structure which satisfies DRM vendors' requirements by enhancing the security of intellectual property management and the protection tools.

• ETRI Journal
• /
• v.27 no.5
• /
• pp.595-607
• /
• 2005

The widespread use of the Internet has led to the problem of intellectual property and copyright infringement. Digital rights management (DRM) technologies have been developed to protect digital content items. Digital content can be classified into static content (for example, text or media files) and dynamic content (for example, VOD or multicast streams). This paper deals with the protection of a multicast stream on set-top boxes connected to an IP network. In this paper, we examine the following design and architectural issues to be considered when applying DRM functions to multicast streaming service environments: transparent streaming service and large-scale user environments. To address the transparency issue, we introduce a 'selective encryption scheme'. To address the second issue, a 'key packet insertion scheme' and 'hierarchical key management scheme' are introduced. Based on the above design and architecture, we developed a prototype of a multicasting DRM system. The analysis of our implementation shows that it supports transparent and scalable DRM multicasting service in a large-scale user environment.

• Journal of Digital Convergence
• /
• v.10 no.1
• /
• pp.357-364
• /
• 2012

For the resistance of the closed intellectual property license from the Free Software Movement. It's free and also can adapt have been widely used. Software for the resistance of the closed intellectual property rights have been promoted by the free software movement. Implementation of the proposed changes in the license that anyone can freely use the software and adapt open source software is widely used. The product of open source software can reduce development time and cost. Many people who use it will improve, verification and developed. However, indiscriminate use of these advantages, as well as the risk of dispute is high. This study is analyzed open source software dispute cases for piracy protection and will show duly open source software available to users by user environment.

• Proceedings of the Korean Society of Broadcast Engineers Conference
• /
• 2005.11a
• /
• pp.233-235
• /
• 2005

멀티미디어 콘텐츠를 저작, 생성, 전달을 통해 최종 소비에 이르기까지 콘텐츠를 보호하고 안전하게 다루기 위해 MPEG-21 IPMP(Intellectual Property Management and Protection)가 표준을 정의하고 있으며 현재 FCD(Final Committee Draft) 단계까지 표준화가 이루어졌다. 우리는 MPEG-21 IPMP에서 규정한 FCD규격에 따라 멀티미디어 콘텐츠와 그에 대한 저작권을 보호 관리하는 시스템을 개발하였다. 제안한 MPEG-21 기반 REL및 IPMP 보호 관리 시스템은 크게 보호 관리 메타데이터 생성부, 통합 제어 관리부, 디지털 아이템 암호화부, 네트워크 인터페이스부의 4부분으로 구성된다. 이 시스템은 먼저 라이센스 서버를 통해 MPEG-21 REL(Rights Expression Language) 규격에 맞는 라이센스 정보가 담긴 문서를 파싱하는 기능을 가지며 오디오 또는 비디오 워터마크가 적용된 멀티미디어콘텐츠에 대해 MPEG-21 IPMP 기반의 메타데이터를 생성하고 보호 관련 REL및 IPMP 메타데이터와 멀티미디어 콘텐츠를 Remuxing 하여 전송되며 멀티미디어 콘텐츠 및 하나의 패키징된 DID는 암호화하여 최종 소비자에게 전송한다.

• The Journal of the Korea institute of electronic communication sciences
• /
• v.17 no.1
• /
• pp.193-200
• /
• 2022

In this study, the intellectual property rights of digital contents (creations) are protected by using block chain technology that cannot be damaged or forged. So, we build a blockchain-based content sales revenue tracking system and platform that activates the transaction and distribution of digital content (creation). We developed an API server that can be used for content registration and revision history management smart contract, license management smart contract according to content purchase, content inquiry function through files and hashes, and web and APP services. Through this, it is possible to prove the relationship between the rights of the creators of digital content creations and protect the rights of the creators.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• v.9 no.2
• /
• pp.619-622
• /
• 2005

When Digital Contents goes through production${\cdot}$delivery${\cdot}$consumption, MPEG(Moving Picture Expers Group)-21 IPMP(Intellectual Property Management and Protection) defines standard which have defined by FCD(Final Committee Draft) level to keep the Digital Contents in safety. And development of system which applied to latest standard to protect and manage the broadcasting contents is required. Currently, the system to protect and manage the broadcast contents consists of fourth organizations which means production server, tool server, license server, consumption server. In this paper, we made production server to parse REL(Right Expression Language) document that has right information for content from license server, and create metadata based on MPEG-21 IPMP about the content that applied to watermark. then, after it do remuxing, transmit the protected data to consumption server.

• The KIPS Transactions:PartC
• /
• v.11C no.6 s.95
• /
• pp.731-738
• /
• 2004

With the increase of digital content usages, the protection for digital content and intellectual property becomes more important. The DRM(digital rights management) technologies are applicable to protect not only any kind of digital contents but also intellectual property. Besides such techniques are required for recorded digital broadcasting contents due to introduction of digital broadcasting techniques and storage devices such as personal video recorder. The conventional protection scheme for broadcasting content is the CAS(conditional access system) by which the access of viewer is controlled on the specific channels or programs. The CAS prohibits the viewer from delivering the digital broadcasting content to other person, so it results in restriction of superdistribution on the digital broadcasting content. In this paper, for broadcast targeting unspecfic many people, we will design the service model of the protection and distribution of digital broadcasting content using encryption and license by employing the concept of DRM. The results of implementation are also shown to verify some functions of each component. An implemented system of this paper has some advantages that the recording of broadcast content is allowed on set-top-box and superdistribution is available by consumer. Hence it provides content providers and consumers with trustworthy environment for content protection and distribution.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.10 no.6
• /
• pp.1003-1010
• /
• 2006

The usage increase of digital contents required solution for protection technology and interoperability of system. MPEG(Moving Picture Experts Group) proposed MPEG-21 Multimedia Frameworks. MPEG-21 IPMP is standard that provides the means to enable digital item and rights information to be persistently managed and protected across networks and devices. In this paper, MPEG-21 IPMP based system to protect digital contents designed by four structures of license server, production server, consumption server, tool server. License server create rights information document using the XML-based REL about multimedia contents of users. Production server makes a digital item by packaging multimedia resource and metadata, which is combined by REL information and IPMP information of multimedia resource. Consumption server takes care of the functions of players that use digital item, and tool server was implement to transmit for missing tool that might occur in all procedures.

• Journal of Digital Convergence
• /
• v.10 no.5
• /
• pp.185-191
• /
• 2012

This study deals with the technical approach related to the protection of digital video contents copyright, which has currently become a major issue in the digital contents market. With the production and distribution of digital video contents rapidly increasing, various policies and technical approaches are being made in relation to the protection of intellectual property rights. The technical approach from a DRM (Digital Rights Management) perspective was made from various angles, but its limitations have also been exposed in terms of convenience and quality. In this study, rather than the existing encoding certification and watermark technologies, it introduces technical approaches from a content-based copy detection method, while suggesting a copy detection method using the representative color sequence. In particular, this study takes into consideration the distribution environment of the domestic video market and deals with the technical approach in a direction that can control the illegal distribution of high quality videos.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• v.9 no.2
• /
• pp.623-626
• /
• 2005

The technique of developing Digital Contents have still not be a standard, and it is cause some problems in the Digital Contents's creating, circulation and consumption, So solve the problem, MPEG suggest MPEG-21 framework. In the standard, The IPMP take charge of the Digital Contents's protection and management, and also it is the same as the rights expression language REL and the dictionary defining the word of REL. But. the study of the IPMP is later than the study of REL and RDD, such as the other study of the MPEG-21 standard. So, there is few system based REL and RDD. In this paper, in order to management and protect contents right. So facing the latest standard, we designed and implementation the Tool Server and the License Server based on REL/RDD.