• The Journal of the Korea institute of electronic communication sciences
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• v.4 no.4
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• pp.253-258
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• 2009

The union of broadcasting and telecommunication is developing by the rapid advance of communications technology and the digitalization of broadcasting. IPTV appears as a standard service of the union of broadcasting and telecommunication because it uses more extended broadband which enables people to watch TVs and uses various communication services at the same time. Therefore, I would like to study the structure of IPTV services, some technical issues for high-quality services and propose solutions.

• Journal of Broadcast Engineering
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• v.13 no.4
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• pp.528-543
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• 2008

Internet Protocol Television (IPTV) provides an interactive and personalized service for realizing integrated broadcasting and telecommunication services. Set-top box (SIB) connected to TV is an essential component required for IPTV and has a unique hardware identifier used in identification and authentication. It means that subscriber authentication based on box-level identification is inconsistent with IPTV's main intention of providing personalized services. The proposed solution is to provide an opportunity to use the flexible user-centric authentication mechanism through Java Card applets in IPTV application server and 3G networks. This paper suggests personalized services by moving the user's private data and authentication management beyond the STB to a truly personalized device, the ubiquitous mobile phone. In addition, this paper presents effectiveness and security analysis for verifying the proposal.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2011.11a
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• pp.102-105
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• 2011

2008년 처음 IPTV 서비스가 시작된 이후 IPTV 콘텐츠 호환성 확보와 단말 이동성 확보를 통한 IPTV 서비스 활성화 및 전체적인 비용 절감을 위해 많은 표준화 이슈들이 있었고 현재까지 표준화가 일부 완료 및 진행중이다. IPTV는 짧은 시간에 급격히 발전하였고 사업이 활성화 되었기 때문에 표준의 적용을 위한 준비 기간이 짧고 표준의 검증이 이루어지지 않은 상태이다. 그래서 표준을 적용한 시스템에 문제가 생길 수 있고 이는 많은 자원 낭비와 콘텐츠 호환성과 단말 이동성이 점점 늦어지는 원인이 되고 있다. 이에 본 논문은 표준을 적용한 플랫폼과 솔루션들이 상용화 되기전에 표준 적용 개발 제품의 표준 적합성을 시험해보고 표준 기술을 검증하여 표준을 정립하기 위하여 국내 IPTV 표준 중 "IPTV 서비스 탐색 및 전송방식 표준[3]"을 적용한 플랫폼과 솔루션을 검증하기 위한 시험 환경을 구축하고 시험규격을 개발하였다.

• Convergence Security Journal
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• v.14 no.2
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• pp.11-16
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• 2014

Recently, request of IPTV was increase. It is a multi-screen service by used TV, PC, and smart-phones. Especially, IPTV and smart-phone linked multi-screen service are very growth by user's recommends. Now, IPTV have a security service partial and multi-screen service. But smart-phone and multi-screen service don't have security service. And authentication service for smart-phone and IPTV linked multi-screen service is don't.. Therefore, We propose that user authentication system for multi-screen service with IPTV and multi-device linked authentcation services. Our proposed system base on Kerberos, so proposal is easy and fast about user authentication. This have simple procedures and more secure services against of PKI. So, our system can support secure multi-screen services against various security threats in multi-screen environments.

• Journal of the Korea Society of Computer and Information
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• v.17 no.6
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• pp.183-190
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• 2012

Internet Protocol Television(IPTV) is the use of an IP broadband network to deliver television (cable TV type) services to the end user. Traditional telecommunications service providers as well as alternate service providers and Internet service providers can utilize their IP networks (and broadband consumer access) to deliver broadcast TV, Video on Demand (VOD) and other Internet services to the consumer. As digital technologies progress, illegal copy and redistribution of IPTV content become easier and simpler. Therefore it is required to protect IPTV content or service. In this paper, we analyze the security threats and requirements. We also discuss related issues and solutions for IPTV.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.47 no.6
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• pp.49-57
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• 2010

In the near future IPTV services will be emerged the various types through Internet, but IMS based IPTV service is one of the very attractive IPTV services. This paper describes the interconnecting architectures of Web based IPTV contents provider to IMS(IP Multimedia System) network and describes the three difference architectures as method to find its IP address. One is the architecture using DNS or HSS to find IP address of Web based IPTV contents provider and connecting gateway function to I-CSCF in IMS. The other is the architecture connecting gateway AS to ISC interface of S-CSCF in IMS. This paper describes the characteristics of traffic generating due to interconnect the Web contents provider, and the traffic model of each architectures. The proposed each architecture is emulated the session establishment delay characteristics in CoD service of IPTV by the simulation. This paper shows that the architecture connecting gateway AS to ISC interface of S-CSCF is the excellent method compare to other two methods in view of the session establishment delay.

• Journal of Digital Contents Society
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• v.10 no.1
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• pp.61-71
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• 2009

While the broadband network and multimedia technology are being developed, the commercial market on digital contents as well as IPTV has been widely spreading. Especially IPTV is providing various useful services since it makes using multimedia contents easier and more convenient by combining the strong points of both TV and PC system. Until now, IPTV system has been focused on VoD service as a general usages. However, various IPTV services are recently demanded since they can have special features for some specific places and occasions. So in this paper, we propose a design of the download based IPTV system using user-specific channel management. At first, program contents previously scheduled by users are downloaded and are played at settop-box according to the prescribed time table. This system has some advantages of giving users easy access to any wanted media contents in anytime that is IPTV's characteristics. And we can increase stability of services by using time slot distributed download for contents. Because this service can be constructed and maintained at relatively low cost, we confirm that this service model is more suitable to some companies with small infrastructure and special purposes. Accordingly, in this paper, we look into necessary elements and define some protocols for system in order to help other developer build this system.

• Information and Communications Magazine
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• v.24 no.4
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• pp.49-58
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• 2007

컨버전스시대의 꽃이라고 할 수 있는 IPTV 서비스는 세계 유수의 통신 사업자들을 중심으로 현재 빠르게 추진되고 있다. 이러한 IPTV 서비스의 세계적 추세에서 우리나라는 자타가 공인하는 세계 제일의 브로드밴드 강대국으로서, 이는 향후 다가올 컨버전스 시대에 강한 경쟁력 우위를 점할 수 있는 더할 수 없는 기회이다. 이에 본 기고에서는 IPTV에 관한 개요, 정책, 서비스, 요소기술, 국내외 현황 및 표준화에 대해 기술한다.

• The Magazine of the IEIE
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• v.33 no.12 s.271
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• pp.96-106
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• 2006

IPTV 서비스는 통신/방송 융합서비스로서 데이터 스티림이 송출되는 H/E 센터로부터 QoS 가 보장되는 IP망을 통해 디지털 영상 방송이나 양방향서비스를 가입자 단말까지 제공하는 서비스이다. 본 고에서는 IPTV서비스를 제공하기 위한 Network 요구조건에 대해 설명하고, IPTV 서비스와 같은 1:n 통신에 적합한 멀티캐스트 기술 및 프로토콜에 대해 살펴본다. 이와 아울러 데이터 스트림을 송출하는 헤드엔드센터 내의 시스템에 대해 알아본 후 마지막으로 향후 해결해야 할 IPTV 관련 중요한 이슈사항에 대해 언급한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2008.11a
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• pp.1177-1180
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• 2008

웹 2.0의 등장과 함께 IPTV서비스에서도 새로운 서비스를 제공 할 수 있게 되었다. 최근에 등장한 웹 2.0 기술을 연구하고 이러한 웹 2.0 기술을 통하여 IPTV 양방향 맞춤형 서비스를 제시한다. 본 서비스 모델은 사용자가 키워드를 중심으로 실시간 검색을 할 수 있고 사용자의 사용 빈도에 따른 맞춤형 서비스를 할 수 있도록 RSS, Tagging 기술들 사용하여 서버 구축 할 수 있는 모델을 설계하였다.