• Proceedings of the Korean Information Science Society Conference
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• 2005.11b
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• pp.634-636
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• 2005

본 논문은 UPnP 기반의 홈 네트워크 환경에서 미디어 서비스를 이용하는 사용자가 위치 이동에 따라 AV 서비스 단말의 전환을 요구하는 경우 QoS 저하 없이 유연하게 상호연동 서비스하기 위한 UPnP AV 확장 서비스 모델을 제안한다. 사용자는 AV 서비스를 받기 위하여 기존의 이동단말기기 뿐만 아니라 일반 데스크탑, 그리고 셋탑박스 등의 다양한 형태의 단말환경을 상호연동하여 유기적으로 연결하여 사용할 수 있다. 하나의 단말환경에서 제공되던 미디어 컨텐츠는 미디어 랜더러와 컨트롤 포인트에 의해 다른 단말 환경에서 사용자의 조작 없이 미디어를 연속하여 제공 받을 수 있으며, 사용자는 이러한 UPnP AV 서비스를 별도의 설정 없이 이용할 수 있다. 논문에서 제안된 UPnP AV 확장 서비스는 사용자의 이동에 따라 단말에서 컨텐츠 재생을 위한 미디어 랜더러와 서로 다른 단말의 미디어 랜더러에 서비스하기 위한 컨트롤 포인트 그리고 각기 다른 단말장치로 컨텐츠가 제공되기 위한 미디어 서버로 구성된다. UPnP 포럼에서 정의하는 표준 서비스에 UPnP 프로토콜의 특성을 이용한 SwithingModule을 미디어 랜더러에 구현하여, 사용자의 이동 상황에 따라 AV 서비스를 받기 위한 미디어 전환 서비스를 지원한다.

• Journal of the Korea Computer Industry Society
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• v.5 no.9
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• pp.1017-1024
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• 2004

In this paper, we propose the progressed interworking method between H.323 and SlP, then explain the improved property. The VolP(Voice over Internet Protocol) technology which is able to use a voice service through internet is more cheaper then existing telephone charges, and is easil)· accept the various of multimedia services from internet. Previous connectionmethod of VoIP used H.323 protocol, but it is very complex to connection establishment. so, the SIP(Session Initiation Protocol) protocol that propose in SIP-Working Group is in use recently. Therefore, we need new interworking methodology between H.323 and SIP Products. In this thesis, the progress interworking method between H.323 and SIP are Propose, then interpret unnecessary packet delay for call setup and improved feature of message exchange.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.11 no.1
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• pp.114-123
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• 2007

As a promising technology that enables ubiquitous computing and will lead the information technology industries of the next generation, the new field of sensor networks is one of the most active research topics today. From now on, each node, the network formation, and even the sensor network itself will interact with the generic network and evolve dynamically according to environmental changes, in a process of continual creation and extinction. In this paper, we propose a address-Internetworking scheme for interactive networking between a sensor network and the Internet based on the TCP port-numbers. The proposed scheme enables internetworking between a sensor network address scheme based on Zigbee and the Internet address scheme based on the Internet Protocol version 6 (IPv6). We implement the proposed address-Internetworking scheme using Berkeley TinyOS, Mica Motes, and IP. In addition we verify the proposed scheme by an interconnection experiment, which involves wireless sensor networks and the Internet, using IPv4/IPv6.

• Communications of the Korean Institute of Information Scientists and Engineers
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• v.19 no.4
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• pp.16-25
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• 2001

• 정보화사회
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• s.104
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• pp.17-19
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• 1996

앞으로 2010년대에는 DAVIC의 VOD 대화식이 도입되면서 멀티미디어의 새로운 시대로 많은 발전이 있을 것으로 예상된다.

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 2004.07a
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• pp.477-477
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• 2004

• TTA Journal
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• s.109
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• pp.82-93
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• 2007

홈네트워크 보안 기술은 디지털 생활의 질을 향상하고 신뢰성있고 상호연동이 가능한 홈네트워크 디바이스 및 서비스의 구현을 위해 요구되는 핵심 기술이다. 홈네트워크 보안과 연관된 국제표준화 기구 또는 사실표준화 단체는 ITU-T, UPnP, DSL 포럼 등을 들 수 있다. 본 고에서는 홈네트워크 보안 표준과 연관되는 이들 국제 표준화 기구와 사실 표준화 단체의 동향을 살펴본다.

• Journal of Korea Game Society
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• v.13 no.3
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• pp.31-46
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• 2013

TV has evolved into thin and wide shaped due to the huge sales of LCD. And it makes many houses own large TV easily. After that TV technology focuses on large and high-definition screen. Recently majority of TV market is that of smart TV which is equipped with internet and GPOS(General Purpose Operating System) so people can install several applications on TV. Yet smart TV's remote controllers are not suitable for several applications. Especially there is no way to provide people with sufficient interactivity with game contents of TV. In this paper, we proposed new methodology for interworking between smart TV and smart device to enhance interactivity of smart TV platform game.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.28 no.5C
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• pp.548-554
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• 2003

Interoperability is ole the most important factors for a successful integration of the speech network. To accomplish communication between endpoints employing different speech coders, decoder and encoder of each endpoint coder should be placed in tandem. However, tandem coder often produces problems such as poor speech quality, high computational load, and additional transmission delay. In this paper, we propose an efficient transcoding algorithm that can provide interoperability to the networks employing ITU-T G.723.1［1］and TIA IS-127 EVRC［2］speech coders. The proposed transcoding algorithm is composed of four parts: LSP conversion, open-loop pitch conversion, fast adaptive codebook search, and fast fixed codebook search. Subjective and objective quality evaluation confirmed that the speech quality produced by the proposed transcoding algorithm was equivalent to, or better than the tandem coding, while it had shorter processing delay and less computational complexity, which is certified implementing on TMS320C62x.

• Korean Journal of Construction Engineering and Management
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• v.10 no.6
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• pp.88-98
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• 2009

Construction industries have increasingly utilized Building information Modeling (BIM) technologies. Interoperability - the capability for BIM data to run from one computer application to another in the life cycle of a project has become one of the principal research areas. Enhancing interoperability inevitably requires information structures that are standardized throughout the construction industries. As a candidate of the data exchange standard, Industry Foundation Classes (IFC) has been developed and several researches recently performed to measure its richness of digital data exchange. But doubts have been brought up whether IFC meets a sufficient level of interoperability since the research result revealed a number of cases of information misrepresentation and loss. This research presents the lessons learned from the interoperability tests of three widely used 3D design applications including Graphisoft's Archicad, Autodesk's Revit, and Bentley's Bentley Architecture. One building's architectural and structural design data were modeled with the three tools and exchanged through IFC respectively for interoperability test.