• Proceedings of the Korea Multimedia Society Conference
• /
• 2002.11b
• /
• pp.408-411
• /
• 2002

본 논문에서는 MPEG-21 프레임 워크상에서 이용되는 기본 단위인 디지털 아이템을 생성하는 디지털 아이템 생성기의 구현에 대하여 논하였다. 디지털 아이템은 MPEG-21 표준에 정의된 디지털 아이템 선언에 기반하여 생성하였으며, 제작된 디지털 아이템 생성기의 유효성을 확인하기 위해 방송용 컨텐츠에 대해 적용하였다. 이 생성기는 MPEG-21 프레임워크 기반 시스템에 적용이 가능하다.

• Proceedings of the Korea Multimedia Society Conference
• /
• 2004.05a
• /
• pp.782-785
• /
• 2004

ISO/1EC 21000-15 MPEG-21 이벤트 리포팅은 멀티미디어 프레임워크 내에서 보고 가능한 모든 이벤트 및 상호작용에 대한 표준적 측정방법 및 인터페이스를 제공하는 MPEG-21의 주요 요소 기술이다. 본 논문에서는 MPEG-21 이벤트 리포팅의 체계 및 DI로서의 구조, 피어 구조를 분석 제시한다. 나아가 현재 표준화 기술 동향을 분석함으로써 향후 이벤트 리포팅에 대한 표준화 방향을 제시하고자 한다.

• Journal of Broadcast Engineering
• /
• v.8 no.1
• /
• pp.80-90
• /
• 2003

Today, thanks to the spread of Internet and the development of various multimedia technologies, broadcasting environment is changing in a way to merging broadcasting and communication environment. In such a new environment, transparent delivery and interoperability between different technologies become an important issue. In ISO/IEC MPEG meeting, MPEG-21 has been established. In MPEG-21, it is discussed actively about big picture to build an infrastructure for the delivery and consumption of multimedia contents. In this paper, we have applied Digital Item in MPEG-21 to broadcasting contents. Broadcasting Digital Item is generated using MPEG-7 MDS for the description of resources as well as Digital Item Declaration, and Digital Item Identification. Furthermore, we develop Digital Item generation system and parsing system. In experiment, we verify the usefulness of Broadcasting Digital Item by generating an education video contents and consuming it at different user environments.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2006.05a
• /
• pp.1085-1088
• /
• 2006

MPEG-21 멀티미디어 프레임워크의 주요 기술 중 하나인 이벤트 리포팅은 MPEG-21 내에서 사용자, 피어, 디지털아이템 사이에서 발생하는 모든 보고 가능한 이벤트에 대한 정보를 공유하기 위한 표준적인 측정 방법과 인터페이스를 제공한다는 점에서 그 중요성을 가진다. 현재 MPEG을 중심으로 MPEG-21 이벤트 리포팅에 대한 연구가 진행되고 있으나 이를 구현한 예가 극히 드물다. 본 논문은 MPEG-21의 이벤트 리포팅 표준 기술을 바탕으로 이벤트 리포트 요구 생성 도구의 설계 및 구현 그리고 구현 결과에 대해 논하였다. 이벤트 리포트 요구 생성 도구는 메인 프레임, 입력 다이얼로그, 그리고 생성 프로세스로 구성되어 있다. 이벤트 리포트 요구의 표현언어는 XML이며 XML 표준 문법과 이벤트 리포트 요구 디지털 아이템 구조에 맞게 생성되도록 설계되었다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
• /
• 2019.06a
• /
• pp.276-278
• /
• 2019

현재 IoT 분야에서는 블록 체인 도입을 적극적으로 하고 있으며 자동화된 거래를 활성화하기 위해 스마트 컨트랙트를 적극 활용하려는 움직임이 많다. MPEG-IoMT(Internet of Media Thing)는 미디어를 다루는 사물인터넷 간에 미디어 데이터 또는 가공된 데이터를 전송하는 표준이다. MPEG-IoMT 에서 블록체인을 도입하기 전에 앞서 컨트랙트와 관련된 MPEG-21 에 대해 전반적으로 살펴보고 MPEG-21 를 활용하여 MPEG-IoMT 내 블록체인 도입 및 스마트 컨트랙트 표현에 대한 표준화 방향성을 제시하고자 한다.

• 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.

• 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 Broadcast Engineering
• /
• v.8 no.4
• /
• pp.392-398
• /
• 2003

In this paper, we propose the structure of multimedia file format based on MPEG-21 standard and the method to address a media resource within the file. The proposed multimedia file format supports the backward compatibility with MPEG-4 and the efficient addressing a media resource from a Digital Item that is XML-based MPEG-21 content. Also, the proposed multimedia file format can provide the functionality to package various types of media contents structurally and efficiently in digital broadcasting, Internet, and wireless environment. In addition, it can be a base model for multimedia file format that can be used for many different purposes such as integration and usage of metadata and multimedia contents.

• Journal of Broadcast Engineering
• /
• v.8 no.4
• /
• pp.399-409
• /
• 2003

In this paper, we present an Event Reporting which is one of the major items of MPEG-21 and exemplify two digital data broadcasting use case scenarios, and according1y we propose the Event Reporting message structure for MPEG-21 broadcasting contents that is based on these use case scenarios. Every interaction with a Digital Item in the multimedia framework can be called an Event. The need to standardize Event Reporting within the Multimedia Framework arise from the need to monitor and communicate amongst Peers and Users the Events relating to Digital Items and/or the programs and devices that operate on them at any given time. However, there are a number of difficulties in providing an accurate report about an Event. Different observers of the Event may have vastly different perspectives. In this paper, we describe a structure and vision of the Event Reporting. Besides we show the activities on MPEG-21 Event Reporting standardization.

• Journal of the Institute of Electronics Engineers of Korea SD
• /
• v.43 no.2 s.344
• /
• pp.60-75
• /
• 2006

The MPEG-21 Multimedia Framework initiative aims to support a wide range of networks and devices in the delivery and consumption of multimedia resources. One of the primary goals of MPEG-21 is universal multimedia access (UMA) through Digital Item Adaptation (DIA), which supports multimedia streaming to heterogeneous devices ensurung the same readability and seamlessness. We pioneer power saving of luminal devices with MPEG-21 DIA, so that the MPEG-21 DIA can also be used to support power saving, even though the framework is not primarily designed for power reduction and only limited power awareness is defined by DIA. We introduce several power-saving techniques conforming to MPEG-21 DIA specifications and show the dependency relation among introduced techniques. We achieve energy savings of up to $66\%$ in hand-held multimedia devices with minor QoS (quality of service) degradation.