• Information and Communications Magazine
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• v.30 no.3
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• pp.73-79
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• 2013

최근 인터넷 트래픽 폭증 문제가 대두되면서 네트워크 자원의 효율적인 활용을 통한 데이터 전달이 중요한 이슈로 부각되고 있다. 이런 관점에서, 대표적인 핵심 미래인터넷 구조인 콘텐트 중심 네트워크에서의 핵심 응용인 적응적 비디오 스트리밍 기법에 대한 연구가 필요한 시점이다. 본 고에서는 현재 인터넷에서 사용되고 있는 적응적 비디오 스트리밍 기법이 콘텐트 중심 네트워크 환경에서 동작할 경우 발생하는 다양한 문제점들을 실험을 통해 살펴보고, 향후 연구 주제를 논의한다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2004.11a
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• pp.155-158
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• 2004

고정된 위치에 있거나 이동중인 수신자들에게 고품질의 멀티미디어 콘텐트를 제공하기 위하여 지상파 DTV를 위시하여 디지털위성방송, 지상파 및 위성 DMB 등 다양한 방식의 방송 서비스들이 가까운 장래에 우리 생활의 일부분이 되리라고 예견되고 있다. 이러한 서비스들은 방송과 통신의 융합환경에 맞추어 맞춤형 방송의 형태로 이용될 것이며, 이는 텔레매틱스나 홈 네트워크 등과 같은 다른 정보 전달 체계와 결합하여 보다 고도화된 정보사회의 중심적인 역할을 할 수 있을 것이다. 본 논문은 방송 통신 융합 환경에서의 DTV의 주요한 한 가지 역할로서 DTV 기반의 흠 네트워크를 제안하고, 그러한 흠 네트워크에서 멀티미디어 콘텐트를 공유하기 위한 두 가지 방안에 대해서 논한다. 첫 번째 방안은 홈 서버 기능을 하는 DTV PVR에서 단 한번의 복호 과정과 스케일러블 코딩 과정을 통하여 가정 내의 모든 기기들이 실시간으로 방송 콘텐트를 공유하는 방법이고, 다른 한 가지 방안은 전체 방송시스템 비디오 부호화 규격을 스케일러블 부호화 기법을 적용한 단일 표준으로 통합하는 방안이다. 본 논문을 출발점으로 하여 이와 같은 논의가 활발하게 이루어지기를 기대한다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.40 no.9
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• pp.1776-1785
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• 2015

Content Centric Network (CCN) has been introduced as a new paradigm due to a shift of users's perspective of using Internet from host-centric to content-centric. On the other hand, a demand for video streaming has been increasing. Thus, Adaptive streaming has been introduced and researched for achieving higher user's satisfaction. If an architecture of Internet is replaced with CCN architecture, it is necessary to consider adaptive video streaming in CCN according to the demand of users. However, if the same rate decision algorithm used in Internet is deployed in CCN, there are a limitation of utilizing content store (CS) in CCN router and a problem of reflecting dynamic requirements. Therefore, this paper presents a framework adequate to CCN protocol and cache utilization, adapting content naming method of exploiting regular expression to the rate decision algorithm of the existing adaptive streaming. In addition, it also improves the quality of video streaming and verifies the performance through dynamic expression strategies and selection algorithm of the strategies.

• Journal of the Korea Society of Computer and Information
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• v.25 no.4
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• pp.87-95
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• 2020

In this paper, we examine the problems of the current Internet due to the development of network services and the expansion of network bandwidth. The current Internet has been used for a long time because it is composed of TCP / IP, but fundamental problems such as bandwidth, transmission rate, and security have not been solved. Therefore, the future network must be prepared through continuous investment and maintenance. In order to overcome this problem, we will propose a way to overcome the above problems and upgrade by converting the current Internet Protocol into the next generation network. Currently, many researches on next-generation networks have been conducted, but there are not many studies in Korea, and research on next-generation networks will be a very important task for the future development of the Internet service industry at the national level. In this paper, we propose an advanced internet environment through the advantages of various next generation protocols.

• 한국HCI학회:학술대회논문집
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• 2009.02a
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• pp.818-825
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• 2009

Edutainment is the one of important factors to study interactive TV for children, and it is a big portion in kid's marketing and education market as well. The aim of this study is to design interactive TV for children to maximize edutainment effects by researching children's behaviors. The analysis of children's behaviors with educational effects should be focused to apply designing user experience to propose new ideas of interactive TV. Through observing children's behaviors and interaction with other media, such as books, CD players, digital camera, and so on, TV can be reanalyzed as reliable media, which is creative interactive TV for children with proposals of user experience structure and interaction solution. TV has been changed from analog TV to IPTV and it will be different with network and interactive solution.

• Journal of Advanced Navigation Technology
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• v.18 no.6
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• pp.648-652
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• 2014

The core of existing IT industry has been multimedia contents based on internet network. But nowadays, ubiquitous technology which combines sensors and network technology is emerging and is called USN (ubiquitous sensor network). Health care industry is one of suitable areas for USN application. In this paper, sensor network for baby care is proposed. The proposed baby care system consists of bluetooth network to transfer information which comes from various sensors like falling detecting, crying and fever detecting sensor to keep infant's status safe from external-potential threats. The effectiveness of the implemented system is showed through demonstration.

• Proceedings of the Korea Contents Association Conference
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• 2009.05a
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• pp.731-736
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• 2009

Hyperlink is a directly followable reference within a hypertext document. With a help of it, we can get information conveniently and save the cost for obtaining content in internet. KISTI(Korea Institute of Science and Technology Information) applied the hyperlink to GTB(Global Trends Brief service). GTB gatehers quickly the latest information of science, technology and market which is necessary to policy maker, businessman and researcher. This report explained the method how applied hyperlink to GTB and showed the examples.