• 한국정보통신설비학회:학술대회논문집
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• 2007.08a
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• pp.127-131
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• 2007

본 논문에서 제안하고자 하는 IPTV 채널캐슁 서비스는 IPTV 서비스의 품질요소인 QoE(Quality of Experience)의 개선을 목적으로 하고 있다. IPTV 채널캐슁 방법은 IPTV 서비스가 실시간 방송 및 VOD(Video On Demand)등 다양한 패턴의 서비스를 선택하는 사용자의 채널요구 패턴을 반영한 인접채널(adjacent-channel)을 멀티캐스트하면, 사용자의 채널전환요구시 제어메시지 전송 및 스위칭에 소요되는 대기시간을 줄여 사용자의 채널전환지연시간을 개선할 수 있다. 이를 위하여 본 논문에서는 LRFU(Least Recently Frequently Used) 알고리즘에 기반한 MCA(Multicast Channel Agent)을 제안하며, MCA을 구성모듈에 대한 설명을 기술한다.

• 한국IT서비스학회:학술대회논문집
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• 2009.05a
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• pp.479-482
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• 2009

방송통신 융합 환경에서 공공서비스를 제공하기 위한 표준화나 규격정립이 안되어 있어 현 시점에서 대국민 서비스를 제공하기 위해서는 IPTV 사업자별로 별도의 IPTV 서비스 개발 및 제공이 필요하며, 이에 따른 중복투자 및 운영의 비효율성이 우려된다. IPTV기반 방통융합공공서비스를 제공함에 있어 공공기관과 IPTV사업자들의 중복투자를 막고 효율적인 서비스 제공을 위해 복수의 공공기관과 복수의 IPTV사업자간 효율적인 서비스연동 및 통신망 연동을 위한 체계 정립이 필요하다. 또한 One Source Multi-use 구현을 위한 ACAP-J기반의 서비스 표준플랫폼 정립을 통한 상호 연계 방안 확립이 요구된다. 이에 본 논문에서는 ACAP-J기반의 One Source Multi-use를 위한 양방향VOD형 공공서비스 제공 방안과 관련 규격을 제안한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2010.11a
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• pp.1339-1341
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• 2010

디지털 TV 시대를 맞아 다양한 형태의 사용자와 상호작용할 수 있는 콘텐츠의 개발이 활성화되고 있고, 이에 따른 IPTV 의 활성화와 함께 방송 콘텐츠의 2 차 이용에 사용되는 VOD 의 제작과 활용이 높아지고 있다. 제작되는 VOD 는 2 차 이용을 위해 영화, 드라마, 다큐 등 다양한 콘텐츠를 포함하고 있는데, 이를 시청하기 위해서는 반드시 다운로드를 받아야 한다. 이러한 다운로드는 1 차적인 사용자 인증 및 기기 인증 후에는 일방적인 전송을 수행하고, 이미 다운로드 되어 있는 파일은 별도의 처리 없이 재생이 가능하기 때문에 VOD 의 불법적인 배포에 대응하기 어렵다. 따라서 VOD 콘텐츠가 다운로드 된 후, 반복 재생 시에 영상에 포함된 인증 정보를 통해 콘텐츠의 보호를 위한 모델을 제안한다.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.43 no.5 s.347
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• pp.7-16
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• 2006

IPTV is referred to the service which provide integrated IPTV services for providing video, 10/100-Mbit/sec Internet, voice, video-on-demand (VOD), and other broadband applications including home security, video conferencing, and telemedicine. All services are integrated into an IP (Internet Protocol) architecture designed specifically for Gigabit Ethernet FTTH systems, HFC or xDLC. It is absolutely necessary that telecon operators provide IP video delivery platforms that enable service providers to transform their business. With their own products, they can better manage their existing services and generate new revenues from broadcast TV, movies on demand and multimedia. Triple-play is a combination of broadcast, telephony and broadband services offered through IPTV networks. With cable operators allowed to offer a triple-play bundle, the nation's telecom operators are beginning to get a little anxious. Cable operators assert that triple-play is a must-have and natural extension of the cable service bundle. The Korean Cable TV Association asserts that the triple-play model is of paramount importance to the cable industry's future growth. But the telecom sector considers itself unfairly disadvantaged, saying they cannot compete until regulatory issues are resolved. The start of web-based television in Korea may still be some time off with a confrontation between the nation's IT regulator and broadcasting sector over the service's legal boundaries shows no signs of being resolved my time soon. korea should be is the fastest-growing provider of IPTV solutions in the industry, with over worldwide customers.

• Journal of Broadcast Engineering
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• v.14 no.1
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• pp.15-27
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• 2009

As various portable digital devices are developed, the space of the TV audience is expanding. We propose a structure of broadcasting control in VOD service in which viewers can resume the viewing of digital broadcasting contents in different devices after they have stopped the viewing to move to another place. Then we design a session and resource management system of VOD for this control. In particular, we design the session management of each consumer and simulate the seamless VOD connection model.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2010.11a
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• pp.276-277
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• 2010

Web2.0의 고도화와 소셜미디어의 진화에 따라 웹 기반 콘텐츠에 대한 다양한 활용이 시도되고 있다. 또한, IPTV 부분에서는 기존의 TV기반에서 Web기반, Mobile기반 서비스로 확산되고 있다. 이러한 멀티디바이스 환경과 웹기반 콘텐츠의 IPTV 활용 서비스를 위해서는 콘텐츠에 대한 정의와 이를 표현하기 위한 메타데이터에 대한 정의가 필요하다. 이를 위해서 관련 표준화 단체를 분석한 후 이들이 제공하는 콘텐츠 메타데이터의 연관관계를 비교 분석하였다. IPTV 서비스를 위한 콘텐츠 메타데이터는 TV AnyTime Phase1 을 바탕으로 각 표준기구의 네트워크 상황과 서비스 방식에 따라 선택적으로 적용하고 있으며, VOD 서비스를 위해서는 CableLab의 ADI 메타데이터를 적용하고 있다. 향후 멀티디바이스 환경에서 IPTV 서비스를 위해서는 메타데이터에 대한 확장 연구가 필요하다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.05a
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• pp.781-784
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• 2009

IPTV, which is convergence of Communication and Broadcasting, has improved quickly recently. This service can provide high quality and various services to their customers, such as choosing channels freely, VOD and many kinds of Interactive service. As the technology of IPTV rapid development, more and more people worry about its disadvantages during the spread and apply, for instance, the illegal application, illegal copy, access authority abuse and the danger of the IPTV contents. This paper will provide the solution to solve these problems, through the Public Key Certificate of PKI(Public Key Infrastructure) and the Attribute Certificate of PMI(Privilege Management Infrastructure).

• 한국HCI학회:학술대회논문집
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• 2009.02a
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• pp.1038-1044
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• 2009

Interests for User Interface directly influencing on usability are also growing as the competition between DCATV and IPTV come to the surface, according to getting activated Interactive TV market. Therefore, this study has the purpose to understand mental models of users for Interactive TV service & Interface. The methods for this study are as follows. First, as the step considering literature study, we compared differences between DCATV and IPTV and caught up the concepts of DCATV and IPTV among some types of Interactive TV. Second, we examinated and analysed Hello TV, C&M, Broad&TV, MegaTV, myLGtv as the step of analysis for examples for Interactive TV. Third, as the step of researches observing users we analysed usability problems caused by differences of mental models between DCATV and IPTV. As a result, we could find there are some differences for mental model of users in Interface & services between DCATV and IPTV Especially, it was found that users feel confused very much regarding perception of real time broadcasting and VOD. We regards this findings can be used as basic for concept makings of Interactive TV, when TV interface is developed in the future.

• Journal of Broadcast Engineering
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• v.23 no.6
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• pp.931-938
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• 2018

D-CATV VOD service provides various contents such as drama and movie with high quality regardless of time and place. As the usage time of the VOD service increases, the viewing time of real-time terrestrial broadcasting is shortened. As the demand for VOD service is high and the number of digital users is increasing, the VOD market is rapidly growing. Therefore this study investigates the age and gender analysis of digital cable TV users and analyzed the usage patterns and audience cases of users. VOD service has been shown to be used by many users for the first time through remote control and free coupons. Non-users of VOD service did not use it because of charge and did not feel the necessity, but some non-users did not recognize the free VOD service.

• Journal of Digital Convergence
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• v.15 no.9
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• pp.471-477
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• 2017

This paper deals with the viewing rate trends of digital media service special reference to terrestrial real time broadcasting of IPTV. In a few years, TV viewership of young people is decreasing, the audience viewing rate of the terrestrial broadcasting which is the representative of the media decreases, and the change of the broadcasting industry is progressing. Especially after the terrestrial broadcaster 's VOD holdback was extended, the viewer' s movement on the competitive channel & mobile media was rapidly progressing. Researcher assumed that the viewing rate of the terrestrial real-time broadcasting has influenced the comprehensive channel, CJ E&M subsidiary channels. As a result, researcher verified using statistical methodological time series analysis and regression analysis. Based on these results, researcher expects media players to prepare policies for viewers' satisfaction and symbiotic growth of markets.