• Title/Summary/Keyword: IPTV

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Analysis of Mobility and Security Requirements for Mobile IPTV (모바일 IPTV의 이동성에 대한 침해 분석 및 대응방안)

  • Lee, Sun-Young
    • The Journal of the Korea Contents Association
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    • v.10 no.5
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    • pp.37-44
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    • 2010
  • The mobility is one of the most important factor for mobile IPTV. However, mobility is highly vulnerable to eavesdropping and unauthorized access. Generally mobility of mobile services is based on handover techniques. But we showed that mobile IPTV must use other techniques to confirm mobility. In this paper, we analyzed security of wibro mobile IPTV from the viewpoint of mobility. We considered DCAS host must include new addresses of mobile devices. We analyzed total number of authentication for the proposed method. So we showed that proposed method was more efficient than wibro-mobile IPTV. We compared the security of our proposal to the security requirements of TTA.

A Case Study for IPTV Regulation Trends (해외의 IPTV 규제동향)

  • MIn, Dae Hong
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2012.10a
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    • pp.518-521
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    • 2012
  • IPTV는 IP를 기반으로 한 초고속인터넷을 기반으로 제공되는 미디어 서비스로서, 국내에 널리 확산된 초고속인터넷을 기반하여 급속도로 확산되고 있는 추세에 있다. 특히, 국내에 IPTV서비스가 본격적으로 상용서비스를 제공한지 3년이라는 시간이 경과하면서, 2012년 8월 500만 가입자를 돌파하여 국내의 주요 방송미디어 매체로 등극하였다. 하지만 IPTV는 도입초기부터 많은 법규제 논란이 제기되어 기존의 방송법이 아닌 인터넷멀티미디어방송사업법(이하 IPTV법)을 별도로 제정하여 IPTV를 규제하고 있다. 이는 IPTV가 기존의 방송과는 달리 VOD 및 양방향서비스 등과 같은 비선형 서비스 및 부가서비스 제공이 가능하기 때문에 기존법으로는 규제가 어렵기 때문이다. 해외의 경우에는 IPTV에 대해서 정도의 차이는 있지만 기존 방송의 규제틀안에서 차별화를 하는 방향으로 규제가 이루어지고 있다. 유럽은 EU의 '국경없는 TV지침(TWFD)이 확대 개정된 시청각 미디어지침(AVMSD)을 근간으로 규제를 하고 있는데, 이 지침에 따라 EU 역내국가들은 방송미디어서비스를 선형서비스와 비선형서비스로 구분하고 있다. 기존 방송이 해당되는 선형서비스에 대해서는 강한 규제를, VOD와 같은 비선형 서비스에 대해서는 약한 규제를 적용하고 있다. 미국은 IPTV를 다채널 유료방송시장(MVPD)의 일종으로 구분하고 케이블방송과는 별개의 서비스로 구분하고 있으며, 주 단위의 IPTV 면허를 필요로 한다. 따라서 IPTV는 위성방송이나 케이블방송과 같이 콘텐츠 규제를 받게된다. 캐나다는 규제당국인 CTRC가 공공방송, 사적방송, 공동체 섹터로 구분하여 면호규제를 시행하며, 콘텐츠 규제는 CTRC와 업계의 자율규제를 통해 시행하고 있는데, IPTV와 같은 뉴미디어에 대해서는 규제의 예외를 인정하고 있다.

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IPTV Evolution and Extension of Customer Needs (IPTV의 진화와 고객니즈의 확장에 대한 연구)

  • Sim, Jin-Bo;Jung, Duk-Hwa
    • The Journal of the Korea Contents Association
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    • v.9 no.3
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    • pp.215-224
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    • 2009
  • This study includes literature research and empirical study with the subject of experts in order to anticipate the direction of IPTV evolution, the extension of customer needs, and the technology related to needs themselves. According to the results of the study, it is expected that IPTV will evolve as a converged media platform that integrates the demands of communication, information, and entertainment; and the customer needs for IPTV will be extended from the basic needs for previous TV(high quality and low cost) to 4A(Any Time, Any Where, Any Contents, Any Device) needs. In particular, as the IPTV evolves, the needs for customization(Any Contents needs) will be regarded most importantly among the 4A needs; this implies that what matters is how contents are created and distributed in order for the IPTV to take priority in competition afterwards.

Analysis of Differences in Teachers' Perception on Educational Attributes and Effects of IPTV

  • LEEM, Junghoon;KIM, Seri;HAN, Seungyeon;SUNG, Eunmo
    • Educational Technology International
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    • v.11 no.1
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    • pp.1-26
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    • 2010
  • The purpose of this study was to identify differences in teachers perception on educational attributes and effectiveness of IPTV according to demographic factors. To investigate possibility of educational application, the participants of the study were teachers selected from IPTV initiative schools in elementary and middle levels nationwide. 55 teachers participated from 22 IPTV model schools nationwide, which were 9 elementary schools, 6 middle schools, 7 high schools. As results of research, there were some significant foundings. In terms of the perception on educational attributes of IPTV, there are explicit perceptional difference between "capital area teachers" and "the other regional teachers". However, there were no significant difference according to school level. Perception of male teachers were more positive than those of female teachers. Also, there were no significant difference according to teaching experience. On the other hand, in terms of the perception on educational effects of IPTV, we could conclude that teachers from metropolitan cities have more negative perception on IPTV than teachers from other kinds of cities have. Regardless of school levels, teachers showed merely fair perception on effectiveness of IPTV. There was significant difference between male teachers and female teachers in perception on educational effectiveness. Also, Results showed no significant differences according to teaching experiences. Future tasks for the development of IPTV strategies require specific need analysis of teachers and collaborative works of policy makers, teachers, researchers, and IPTV service providers.

Open IPTV Platform using Overlay Multicast and Content Delivery Network (오버레이 멀티캐스트 및 콘텐츠 전달 네트워크를 적용한 개방형 IPTV 플랫폼)

  • Jung, Seung-Moon;Kang, Im-Chul;Jeon, Jin-Han
    • The Journal of the Korea Contents Association
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    • v.9 no.12
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    • pp.528-536
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    • 2009
  • Recently, the importance of IPTV providing multimedia service over IP based networks managed to provide the required level of quality of service and experience, security, interactivity and reliability has been gradually increasing by the commercialization of its service. However, the original purposes of IPTV service - contents are produced and consumed anytime, anywhere, and over any device at the same time - have not been satisfied by service providers because most services offered by service providers depend on closed IPTV platform. In this paper, we propose an open IPTV service platform that an individual or small company can easily produce contents and offer IPTV service independently from the existing closed IPTV platform.. The proposed IPTV platform exploits overlay multicast scheme to offer reasonable service under the environment where network bandwidth and processor resource are limited. It also uses CDN-like scheme to ensure the quality of transmitted contents. The performance evaluation shows that the proposed IPTV platform has the possibility of being an open IPTV platform considering its results such as the quality of transmitted contents, the transmission rate, the channel zapping time, and so on. It also shows that proposed IPTV platform could be applied to real IPTV service with continuous enhancement of its functions and user interfaces.

A Study for the Development of IPTV-based Learning Scenarios : Focused on Self-Regulated Learning Strategies (IPTV기반 학습 시나리오 개발 연구 - 자기조절학습전략 중심으로 -)

  • Choi, Hyung-Shin;Kim, Ji-Sim;Kim, Jeong-Hwa;Yang, Myung-Og
    • Journal of The Korean Association of Information Education
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    • v.14 no.4
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    • pp.571-588
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    • 2010
  • IPTV, a convergence service of broadcasting and communication, draws an attention as an educational media that provides various advantages including top quality of screen, easy access, and protection from harmful contents. In addition, a successful IPTV learning requires learners' active participations. Yet, the research on educational applications of IPTV is at the early stage focusing on teachers and developers' perspectives. Therefore, the present study conducted a survey on learners' current IPTV usage and intentions to use. Reflecting the results of the survey, we developed learner-centered IPTV learning scenarios based on self-regulated learning strategies and suggested its implementations.

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A Review on the IPTV Regulatory Regime and Market Performance (IPTV 시장성과와 관련 규제제도의 검토)

  • MIn, Dae Hong;Kim, Sung Chul
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2012.10a
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    • pp.511-514
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    • 2012
  • IPTV는 기술적으로 TV에 PC적 기능이 더해지고 인터넷 프로토콜(IP)을 통해 인터넷과 연결되는 서비스로, 국내 초고속인터넷의 속도가 VDSL, 광랜과 같은 서비스의 등장으로 최대 100Mbps에 이르러 동영상 콘텐츠의 실시간 스트리밍 서비스가 가능한 환경이 구현되었다. IPTV 도입을 통해 산사건 방송, VOD 등의 기본적인 서비스뿐만 아니라, 양방향 광고, IPTV 민원발급 및 IPTV 공공서비스 제공 등 다양한 응용서비스의 개발 및 활성화를 기대하였다. 또한 IPTV를 통해 유료방송의 경쟁을 촉진시키고 케이블TV의 디지털 전환을 촉진시킴으로써 시청자들의 복지를 향상시킨다는 취지도 함께 있었다. 정량적으로는 IPTV가입자가 2012년에 이르러 보수적으로 290만가구, 낙관적으로는 450만 가구에 이를 것으로 예상하였으며, 관련 시장규모도 동년도에 약 7,515억원에 이를 것으로 전망하였다. 하지만, 2011년 말이 이미 450만 가입자를 돌파하고 2012년 8월 500만 가입자를 유치하면서 IPTV 서비스는 본격적인 mass market을 형성해 나가고 있다. IPTV 시장이 확대해 나가면서 유료방송 가입가구 수도 증가하였는데, 도입당시인 2008년 말 1,740만 가구가 유료방송에 가입하여 104%의 보급률을 보였으나 2011년 6월말 현재 가구수 대비 유료방송 가입자구수는 127%로 증가하였다. 이렇게 IPTV서비스 시장이 확대되고는 있으나, 정부의 신규 서비스에 대한 과도한 요금규제, IPTV와 경쟁하는 케이블방송사(SO) 계열의 콘텐츠 사업자(CP)들의 방송채널 공급거절 및 지상파 방송사의 과도한 재전송 대가, 전국 권역사업자인 IPTV에 대한 권역별 가입자점유율 규제, IPTV의 차별성으로 내세웠던 T-Commerce 및 양방향 광고에 대한 규제는 앞으로 개선해 내가야할 과제이다. 이에 본고는 IPTV의 시장성과를 조망하고, 시장의 지속성장을 위해 필요한 제도개선 방향을 살펴보았다.

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A comparison study on characteristics of IPTV and digital CATV subscribers (IPTV가입자와 디지털 CATV가입자의 특성비교에 관한 연구)

  • Ryu, Gui-Yeol;Rhee, Eun-Jun;Lee, Hyun-Woo
    • Journal of the Korean Data and Information Science Society
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    • v.23 no.4
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    • pp.665-675
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    • 2012
  • The object of study is to compare the characteristics of IPTV (Internet protocol television) subscribers and digital CATV (Community antenna television) subscribers. We used the adjusted residuals. We did gang survey for 100 subscribers in Seoul, Kyeonggi or Incheon regions. Compared to digital CATV, IPTV seems to have appropriate contents for interactive services and high satisfaction level for cost, but high dissatisfaction level for channels. Digital CATV subscribers would know and subscribe passively, compared to IPTV subscribers. IPTV subscribers are more satisfied than digital CATV subscribers even though IPTV is higher cost. Main content of digital CATV is sports, which is not interactive contents. People think IPTV is an innovative service which let subscribers see wanted contents always, but digital CATV is an extension of CATV. So digital CATV cannot use advantages of interactive services. Even though two services are almost same, they are very different in recognition.

A Study on Next-Generation IPTV Multimedia Transmission Scheme (차세대 IPTV 멀티미디어 전송기법 연구)

  • Park, Byung-Joo
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.9 no.2
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    • pp.21-28
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    • 2009
  • To provide IPTV service successfully, we have to guarantee quality of service (QoS). However, in IPTV service, when we change channels, channel zapping delay will cause lower subscriber's satisfaction. Also, we can not provide IPTV service efficiently by limited bandwidth problem. In this paper, we propose a new enhanced IPTV transmission scheme to solve the two types problems using RACR (Robust Aggregation Control Router) which can control bandwidth and channel zapping time.

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Study for IPTV based NGN applying Identity management apply (NGN 기반 IPTV 서비스에서의 IdM의 적용방안)

  • Lee, Young-Pyo;Park, Jun-Su;Kim, Hee-Dong;Jang, Jae-Young
    • 한국정보통신설비학회:학술대회논문집
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    • 2009.08a
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    • pp.301-304
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    • 2009
  • 현재의 IPTV 시비스는 VoD+PPV와 같이 단순한 형태로 서비스를 제공하고 있다. IPTV 서비스 사업자들은 IPTV의 새로운 수익모델인 양방항성 통신특성에 최적화된 서비스를 제공해야 한다. 양방향 통신의 대표적인 서비스로는 T-commerce가 있다. T-commerce 서비스 제공시 IPTV 가입자의 정보가 제3의 서비스 사업자로 전송되기 때문에 개방된 IP망에서 가입자의 정보가 전송되므로 개인정보보호의 중요성이 커지게 될 것이다. 양방향 서비스를 제공하면서 개인정보보호를 유지하는 방안으로 ID를 통합적으로 관리하는 기술인 IdM(Identity Management)을 IPTV에 적용하는 방안이 고려되고 있다. 본 논문에서는 NGN(Next Generation Network)기반 IPTV의 IdM 적용방안에 대해 기술한다.

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