• Title/Summary/Keyword: IPTV security

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Personalized Recommendation System for IPTV using Ontology and K-medoids (IPTV환경에서 온톨로지와 k-medoids기법을 이용한 개인화 시스템)

  • Yun, Byeong-Dae;Kim, Jong-Woo;Cho, Yong-Seok;Kang, Sang-Gil
    • Journal of Intelligence and Information Systems
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    • v.16 no.3
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    • pp.147-161
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    • 2010
  • As broadcasting and communication are converged recently, communication is jointed to TV. TV viewing has brought about many changes. The IPTV (Internet Protocol Television) provides information service, movie contents, broadcast, etc. through internet with live programs + VOD (Video on demand) jointed. Using communication network, it becomes an issue of new business. In addition, new technical issues have been created by imaging technology for the service, networking technology without video cuts, security technologies to protect copyright, etc. Through this IPTV network, users can watch their desired programs when they want. However, IPTV has difficulties in search approach, menu approach, or finding programs. Menu approach spends a lot of time in approaching programs desired. Search approach can't be found when title, genre, name of actors, etc. are not known. In addition, inserting letters through remote control have problems. However, the bigger problem is that many times users are not usually ware of the services they use. Thus, to resolve difficulties when selecting VOD service in IPTV, a personalized service is recommended, which enhance users' satisfaction and use your time, efficiently. This paper provides appropriate programs which are fit to individuals not to save time in order to solve IPTV's shortcomings through filtering and recommendation-related system. The proposed recommendation system collects TV program information, the user's preferred program genres and detailed genre, channel, watching program, and information on viewing time based on individual records of watching IPTV. To look for these kinds of similarities, similarities can be compared by using ontology for TV programs. The reason to use these is because the distance of program can be measured by the similarity comparison. TV program ontology we are using is one extracted from TV-Anytime metadata which represents semantic nature. Also, ontology expresses the contents and features in figures. Through world net, vocabulary similarity is determined. All the words described on the programs are expanded into upper and lower classes for word similarity decision. The average of described key words was measured. The criterion of distance calculated ties similar programs through K-medoids dividing method. K-medoids dividing method is a dividing way to divide classified groups into ones with similar characteristics. This K-medoids method sets K-unit representative objects. Here, distance from representative object sets temporary distance and colonize it. Through algorithm, when the initial n-unit objects are tried to be divided into K-units. The optimal object must be found through repeated trials after selecting representative object temporarily. Through this course, similar programs must be colonized. Selecting programs through group analysis, weight should be given to the recommendation. The way to provide weight with recommendation is as the follows. When each group recommends programs, similar programs near representative objects will be recommended to users. The formula to calculate the distance is same as measure similar distance. It will be a basic figure which determines the rankings of recommended programs. Weight is used to calculate the number of watching lists. As the more programs are, the higher weight will be loaded. This is defined as cluster weight. Through this, sub-TV programs which are representative of the groups must be selected. The final TV programs ranks must be determined. However, the group-representative TV programs include errors. Therefore, weights must be added to TV program viewing preference. They must determine the finalranks.Based on this, our customers prefer proposed to recommend contents. So, based on the proposed method this paper suggested, experiment was carried out in controlled environment. Through experiment, the superiority of the proposed method is shown, compared to existing ways.

The Technology of Personal Cloud Computing and Market Research (퍼스널 클라우드 컴퓨팅의 기술과 시장 분석)

  • Shim, Hyun-Bo
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.18 no.2
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    • pp.239-251
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    • 2014
  • The personal cloud is a service which approaches the personal contents scattering to all terminals and online space at the personal information-oriented age in which the person's digital device including the Smart-phone, MID, PC, IPTV and etc, increases and the personal online service including the blog, E-mail, UCC, social network service and ect, rapidly increasing for the cloud computing regardless of the terminal anywhere independently and can provide the high vale added personalization service through the analysis of the contents and processing. The future of the personal cloud market is prospected through the service and technology which enhances the understanding about the cloud computing, that is the next generation IT paradigm which the world IT companies pay attention to, and is provided and business strategy analysis of the security and normalizing and related companies.

A study on the Efficient OKTEK(One-way Key-chain for TEK) for Realtime Digital Contents Transmission (실시간 디지털 콘텐츠 데이터 전송을 위한 효율적인 OKTEK(One-way Key-chain for TEK) 기법에 관한 연구)

  • Jeon, Sang-Hoon
    • Journal of the Korea Society of Computer and Information
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    • v.14 no.3
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    • pp.103-111
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    • 2009
  • IEEE 802.16e(Wibro) standard, providing robust mobile realtime data transmission technology, requires of faster and smooth execution of security mechanisms, such as key distribution and user authentications, during base station hopping. In particular, key management mechanisms such as redistribution and regeneration have an impact on digital contents transmission and realtime data transmission, not only in 802.16e environment, but also in typical transmission environment as well. This paper presents traffic management mechanisms designed to realtime digital contents (such as IPTV) transmission efficiency and increase the QoE by utilizing OKTEK methodology.

Reducing Channel Capacity for Scalable Video Coding in a Distributed Network

  • Kim, Hyun-Pil;Lee, Suk-Han;Lee, Jung-Hee;Lee, Yong-Surk
    • ETRI Journal
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    • v.32 no.6
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    • pp.863-870
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    • 2010
  • In recent years, the development of multimedia devices has meant that a wider multimedia streaming service can be supported, and there are now many ways in which TV channels can communicate with different terminals. Generally, scalable video streaming is known to provide more efficient channel capacity than simulcast video streaming. Simulcast video streaming requires a large network bandwidth for all resolutions, but scalable video streaming needs only one flow for all resolutions. In previous research, scalable video streaming has been compared with simulcast video streaming for network channel capacity, in two user simulation environments. The simulation results show that the channel capacity of SVC is 16% to 20% smaller than AVC, but scalable video streaming is not efficient because of the limit of the present network framework. In this paper, we propose a new network framework with an SVC extractor. The proposed network framework shows a channel capacity 50% (maximum) lower than that found in previous research studies.

클라우드 컴퓨팅을 활용한 D-CATV의 사용자 인증 및 접근 제어 방법연구

  • Yang, Jong-Won;Lee, Sang-Dong;Chae, Jong-Soo;Seo, Chang-Ho
    • Review of KIISC
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    • v.20 no.2
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    • pp.20-26
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    • 2010
  • 기존의 케이블 방송망을 활용하여 개인화 방송 서비스를 제공하기 위해서는 하드디스크 등 PC형태를 갖춘 고가의 셋톱박스가 필요하며, SO 별로 서비스 제공을 위한 독립적인 인프라 구축이 필요한 실정이다. D-CATV 사업자의 경우 고화질 디지털 방송을 앞세워 한시적인 주문형 비디오 서비스 및 한정적인 웹서비스와 유사한 형태의 부가서비스를 제공하고 있으나, 기존 TV의 영역을 넘어선 IP망의 특생을 활용한 양방향서비스, 개인화 서비스를 원활히 제공하지 못하고 있다 이는 IPTV 사업자와 치열한 경쟁에서 서비스 측면에서 지속적인 열세의 빌미가 될 것이다. 본 논문에서는 스토리지 클라우드 컴퓨팅 환경을 적용한 차세대 D-CATV 서비스를 위해 SO업체들이 공동활용 가능한 클라우드 인프라 구축과 양방향 개인화 서비스 등 차세대 디지털방송 기반 기술을 위한 HDFS 기반 가상화된 스토리지 클라우드 시스템을 제안하며, 또한 D-CATV 서비스 접속을 위한 사용자 인증 및 콘텐츠 접근제어 시나리오 방법을 제안 하였다.

ITU-T SG17 Q.9(안전한 통신 서비스) 국제표준화 동향 및 향후 전망

  • Oh, Heung-Ryong;Nah, Jae-Hoon;Youm, Heung-Youl;Kim, Dae-Kyung
    • Review of KIISC
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    • v.18 no.4
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    • pp.30-41
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    • 2008
  • 국제표준화기구 ITU-T에서는 SG17 WP2 그룹이 정보통신 보안에 관한 표준화를 리드하는 연구그룹으로, 산하 7개의 연구과제(Question)를 구성하여 정보보호 국제표준을 개발하고 있다. 이 연구과제들 중 Q.9(의장, 염흥열, 순천향대)에서 는 안전한 통신 서비스라는 주제로 모바일 보안, 홈네트워크 보안, 웹 서비스 보안, P2P보안, 멀티캐스트 보안, USN 보안, NID(RFID) 보안, IPTV 보안, 응용서비스 및 응용 프로토콜 보안 등 정보통신 환경에서 다양하게 응용될 수 있는 국제표준들의 개발을 담당하고 있다. 현재, Q.9에서는 앞서 언급된 분야로 총 16건의 국제표준을 제정하였으며, 총 6건의 표준초안들이 개발중에 있다. 본 논문에서는 Q.9에서 개발한 국제표준들과 개발중에 있는 표준초안들에 대해 간단히 소개하고, 차기 연구회기(’09${\sim}$’12) 구조조정 방향에 따른 향후 추진방향을 제시하고자 한다.

User Centric U-commerce Business Model Design using SOiVA (SOiVA을 활용한 사용자 참여형 U-Commerce 비즈니스 모델 설계 - payment를 중심으로)

  • Moon, Nammee;Lee, Veronica;Heo, Sungjin;Cho, Taenam
    • Annual Conference of KIPS
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    • 2009.04a
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    • pp.616-619
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    • 2009
  • 새로운 미디어와 창의적인 발상으로 유비쿼터스 기반 상거래에 대한 요구는 날로 증가하고 있다. 사용자 참여형 U-commerce 비즈니스 시나리오를 구성하고, 이에 따라 디지털 아이템 상거래에 필요한 요구사항을 정의한다. 이를 위하여, 각 단계 별로 수익모델을 중심으로 서비스 흐름을 고찰하고, IPTV를 비롯한 휴대폰, 텔레매틱 단말, PDA 등 각종 U-Commerce 서비스가 가능한 단말에서의 양방향 서비스를 고찰하며, 설계된 분류체계를 SOA 기반 U-commerce의 실질적인 운영에 이를 활용가능하게 하는 것을 목적으로 한다. 특히, 본 논문에서는 UCC와 같은 P2P를 중심으로 하여 SOiVA(Service Oriented interactive Video Application)를 활용한 U-commerce 운영 서비스 요구사항을 연구하였다.

The Design and Implementation of Internet Broadcasting Solution applied to FLV (FLV를 적용한 인터넷 방송 솔루션의 설계 및 구현)

  • Kwon, O-Byoung;Shin, Hyun-Cheul
    • Convergence Security Journal
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    • v.12 no.3
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    • pp.93-97
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    • 2012
  • In this paper, we apply the next generation Internet TV solution, FLV has been designed and implemented. Currently being broadcast in the field to compress HD video in real time, as well as live Internet VOD services are available through the online system, the Internet LIVE broadcast and VOD service easy to operate and UCC services that support the solution. VOD video cameras and in real time using H264 CORECODEC to compress MPEC4, WMV, and real-time video streaming on the Internet, and phone system that supports the first, real-time recording of camera images featured nation's first real-time encoder system (Real time encoder system) is, Web and smart environment suitable for supporting the latest CORECODEC technology and software products. Second, the video can be played in MP4 player and customize your chat, and Custer (customizing) is a possible two-way Internet Broadcasting System. Third, CMS (Contents Management System) feature video content and course management content in real time via the Android phone and iPhone streaming service is available.

Development of Forensic Marking technology for tracing multiple users (다중 불법콘텐츠 복제자 추적 기술 개발)

  • Kim, Jong-An;Kim, Jin-Han;Kim, Jong-Heum
    • 한국정보통신설비학회:학술대회논문집
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    • 2008.08a
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    • pp.102-106
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    • 2008
  • Forensic Marking is the technology that enables the service providers (SP) to identify the illegal digital contents distributors by first inserting markings (data indicating the user information and playback time) in realtime into the digital contents at time of playback of digital contents, and then later by extracting inserted markings from the contents which are illegally captured from the multimedia device such as IPTV STBs and distributed over the Internet. Digital Rights Management (DRM), which is a very popular content protection technology, has the security hole that can be vulnerable because the encrypted digital contents are transformed into their original plaintext forms after the decrypting process on the STBs. Therefore Forensic Marking (FM) has now become a companion content protection solution to DRM. This article describes a new way of tracking up to 4 illegal content users in FM implementation using the blue-difference chroma component of YCbCr color space. This FM technology has many advantages like fast processing time and easy portability to STB devices compared to that of the traditional watermarking processing in the frequency domain.

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Security Measures for the Open Convergence Service on broadcasting and telecommunication (방송융합 서비스 개방화에 따른 보안대책 연구)

  • Jung, Chansuk;Lee, MyoungYeal;Shin, Yongtae
    • Annual Conference of KIPS
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    • 2013.05a
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    • pp.521-523
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    • 2013
  • 최근 인터넷 기술의 발전과 폭발적인 인기를 누리고 있는 스마트폰 등의 인프라요소의 발전으로 인해 방송 및 통신 서비스의 융합된 형태인 IPTV, 스마트 TV 등의 새로운 형태의 서비스가 도입되어 시장을 형성하고 있다. 이러한 새로운 형태의 서비스는 기존 몇몇의 콘텐츠 제공자가 제공하는 서비스 뿐만아니라, 자신들이 만들 콘텐츠를 이용하고자하는 프로슈머들의 욕구 또한 충족시켜주어야 한다. 이러한 서비스 시장의 변화는 기존 폐쇄적인 서비스 운영형태를 가지고 있던 사업자들의 개방화 정책을 유도하고 있다. 우리나라의 서비스 사업자들오 이러한 서비스변화에 말맞추어 개방화 전략을 앞다투어 발표하고, 새로운 형태의 서비스를 통한 시장 점유율 향상을 위해 노력하고 있다. 하지만, 개방화된 서비스 형태는 자칫 새로운 보안문제를 야기할 수 있고, 이로 인해 새로운 서비스 조기정착과 서비스 시장확대라는 목적을 저해시킬 수 있다. 이에, 본 논문에서는 방송융합서비스의 개방화 정책에 따른 새로운 서비스 형태를 알아보고, 신규서비스에 내재되어 있는 보안위협을 도출, 이에 대한 대응방안을 제시하고자 한다. 이러한 대응방안은 신규 융합서비스 안정적 도입 및 확산을 위한 기반이 될 수 있을 것이다.