• Title/Summary/Keyword: Multimedia STB

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Design and Implementation of FPGA-based High Speed Multimedia Data Reassembly Processor (FPGA 기반의 고속 멀티미디어 데이터 재조합 프로세서 설계 및 구현)

  • Kim, Won-Ho
    • Journal of the Institute of Convergence Signal Processing
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    • v.9 no.3
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    • pp.213-218
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    • 2008
  • This paper describes hardware-based high speed multimedia data reassembly processor for remote multimedia Set-Top-Box(MSTB) of interactive satellite multimedia communication system. The conventional multimedia data reassembly scheme is based on software processing of MSTB. As increasing of transmission rate for multimedia data services, the CPU load of remote MSTB is increased and reassembly performance of MSTB is limited. To provide high speed multimedia data service to end user, we proposed hardware based high speed multimedia data reassembly processor. It is implemented by using an FPGA, a PCI interface chip, and RAMs. And it is integrated in MSTB and tested. It has been confirmed to meet required all functions and processing rate up to 116Mbps.

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STB Virtualization based Enhanced IPTV User Authentication System (셋톱박스 가상화를 통한 향상된 IPTV 사용자 인증 시스템)

  • Go, Woong;Kwak, Jin
    • Journal of the Korea Institute of Information Security & Cryptology
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    • v.21 no.4
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    • pp.137-147
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    • 2011
  • Because of the convergence between Internet and broadcast communication, users are able to use multimedia contents anytime. In addition, with the change of existing one-way service to two-way service, the provider can offer efficient and useful broadcast communication. However, As multimedia contents is provided by STB, it can validate only end-node STB. Thus, this method is limiting possibilities of individual service. Also, providers' STB are different, so problem of compatibility is emerging as an issue. Therefore, in this paper we proposed STB virtualization based enhanced IPTV user authentication system to improve individual authentication and compatibility of services.

Multipoint multimedia communcation service in broadband ISDN part I: a conversational communcation on DAVID STB environment (광대역ISDN상의 다지점 멀티미디어 통신서비스 I부:DAVIC 표준 STB에서의 대화형 멀티미디어통신)

  • 황대환;이종형;박영덕;조규섭
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.23 no.4
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    • pp.821-835
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    • 1998
  • The Digital Audio-Visual Council(DAVIC) that was established to develop useful multimedia communication services has completed the specifications for providing on-demand services such as Movie on Demand(MoD), Teleshopping and accepting Internet service. And then they are proceeding the works to suport converstional communcation services like Plain Old Telecphone Service(POTS), Video telephone, Video teleconferencing. In this paper, we prpose an efficient terminal architecture which can provide conversational multimedia communication services on DAVIC Set-Top Box (STB) environments. To apply the implemented conversational terminal to the multipoint communication environment, we considered the factors of Qurlity of Services(QoS) that determine grade of conversational communication service. We also present the inter-working scheme and that system structure to satisfy QoS by using new MPEG video bridge which gurantees end to end delay requirements as major element of QoS for achieving the real time communication and does not accompany visual quality degradation.

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Suggestion of an Fiber Channel-Embedded IPTV STB for Optical Fiber-based IPTV Networks (광섬유 기반 IPTV 네트워크를 위한 FC 내장형 IPTV STB 제안)

  • Chung, Sung-Wook
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.10 no.3
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    • pp.213-219
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    • 2017
  • Recently, the Internet Protocol Television (IPTV) services have become very common, enabling various Internet-based services as well as watching TV. In the IPTV system, a Set-Top box (STB) plays a key role as a network terminal device that transmits and receives realtime multimedia contents. In addition, the IPTV networks are usually supported by broadband optical fiber-base network such as fiber-to-the-home (FTTH), However, a general IPTV STB is regarded as one of the local area network (LAN)-attached devices while sharing the bandwidth of the LAN (e.g., Ethernet). In order to overcome the limited bandwidth utilization by fully facilitating the broadband bandwidth (e.g., 1 Gbps) of the optical fiber-based network, we propose a new FC (Fiber Channel)-embedded IPTV STB which can be directly attached to the optical fiber network. Then, we verify that the impacts of the proposed FC-embedded IPTV STB by organizing the the FC-AL (Fiber Channel-Arbitration Loop) network equipped with the FC-embedded IPTV We measures the average Start-up Delay, Average Reject Ratio and the Number of Concurrent Users through extensive simulations to investigate the performances of the suggested FC-AL-based IPTV network. Surprisingly, the IPTV network architecture with the proposed FC-embedded IPTV STBs has an excellent average start-up delay of less than 10 msec, an acceptable average reject ratio of less than 3 % as well as a linear increase of the number of concurrent users when extending the architecture. This reveals that the proposed FC embedded STB has a superior impacts on the performance of the entire IPTV network by effectively utilizing the broadband bandwidth of the fiber optic-based network.

Design and Implementation of the DRM Supporting Smart Multimedia Streaming in Ubi-Home (Ubi-Home에서의 지능적 멀티미디어 스트리밍을 지원하는 DRM 설계 및 구현)

  • Park Jong-Hyuk;Lee Sang-Jin;Hong In-Hwa;Ahn Tae-Won;Lee Deok-Gyu
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.31 no.3C
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    • pp.293-301
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    • 2006
  • In this paper, we design and implement the UHSNS-DRM(Ubi-Home Smart Multimedia Streaming-Digital Right Management) in Ubi-Home. The proposed system support flexible distribution platform for digital content copyright protection and management in Ubi-Home. This system also can provide multimedia streaming service to authorized users who are using PC, STB, PDA, and Portable Device, etc. Furthermore, we adopt concept of domain authentication and it help to improve the efficiency of license management for all devices in Ubi-Home. We design user's location recognition algorithm in order to provide intelligent services. Of course, this algorithm is applied for the proposed system. Start after striking space key 2 times.

A power reduction scheme for set-top box base on signals to external devices (외부기기 동작 신호 기반 셋톱박스 소비 전력 저감 기술)

  • Kim, Hyuk-Gi;Lee, Hee-Jae;Park, Ji-Hye;Kim, Yong-Ho;Kim, Hoon
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2010.07a
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    • pp.273-275
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    • 2010
  • 우리나라는 점차 강화되고 있는 세계적인 연간 소비전력 제한 규제 및 정책에 발맞추어 Standby Korea 2010 정책으로 주요 전자기기의 대기전력을 1W미만으로 낮추는 전략을 추진하고 있다. 최근 아날로그 방송에서 디지털 방송으로 전환되고, IPTV 등이 빠르게 보급됨에 따라 향후 디지털 STB의 수요 및 시장이 크게 성장할 전망이다. 이에 본 논문은 Set-Top Box(STB) 소비전력 저감 효과를 높이기 위해 TV와 STB간 외부기기 연결 시 기존 Auto Power Down(APD)기법 대비 High Definition Multimedia Interface(HDMI) 포트 제어를 통한 제안 기법을 적용하여 연평균 전력 4~12% 저감 할 수 있다.

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A Low-weight Authentication Protocol using RFID for IPTV Users (RFID를 이용한 IPTV 사용자의 경량화 인증 프로토콜)

  • Jeong, Yoon-Su;Kim, Yong-Tae;Park, Gil-Cheol;Lee, Sang-Ho
    • Journal of the Korea Institute of Information Security & Cryptology
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    • v.19 no.2
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    • pp.105-115
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    • 2009
  • At the most recent, IPTV service is increasing, which isa communicative broadcasting fusion service that provides various multimedia contents interactively followed by user's request through super high-speed internet. For IPTV user service with high mobility, IPTV user's enrollment is essential. However, IPTV service provided to mobile users can't provide the certification of mobile user securely. This paper proposes light user certification protocol which can certificate mobile users by attaching RFID to IPTV STB for secure awareness of mobile users who get IPTV service. The proposed protocol prevent reply attack and man-in-the-middle attack from happening oftenin a wireless section by transmitting the result value hashed by hash function with both its' ID and random number received from tag after tag transmits random number which generated randomly in the process of certification of mobile user to IPTV STB.

Multimedia Data n-Frame Prefetching Policy For Low Power Consumption and High I/O Performance In the IPTV STB Storage (IPTV STB 저장장치에서 저전력과 입출력 성능 향상을 위한 멀티미디어 데이터 n-프레임 선반입 기법)

  • Yang, Junsik;Go, Youngwook;Cho, Won-Hee;Lee, Geunhyung;Song, Jae-Seok;Kim, Deok-Hwan
    • Proceedings of the Korea Information Processing Society Conference
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    • 2009.04a
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    • pp.643-646
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    • 2009
  • 최근에 IPTV(Internet Protocol TV) 셋톱박스의 보조기억장치의 성능과 저전력을 위한 연구가 많이 수행 되고 있다. IPTV를 위한 셋톱박스의 구성품인 하드디스크는 멀티미디어 데이터를 저장하고 저장된 데이터를 재생한다. 하지만 하드디스크는 기계적인 특성으로 인하여 전력 소모 문제 및 성능 저하 문제 등이 있다. 본 논문에서는 IPTV 환경에서 하드디스크와 플래시 메모리를 혼합한 하이브리드 저장 시스템을 구성 하여 멀티미디어 데이터의 n-프레임을 플래시 메모리로 선반입 하는 새로운 방법을 제안한다. 이 방법을 통해 하드디스크의 대기시간을 줄이고 전력 사용을 최적화 할 수 있다. 실험을 통해 제안한 방법이 기존 방법과 비교하여 20.69%의 평균응답시간을 개선하고 전력소모를 28.14% 감소시킴을 확인 하였다.

A Set-top Box with Virtual Platform Support for QoS Management in IMS Based Multiple Provider Networks

  • Siddiqui, Muhammad Shoaib;Hong, Choong-Seon
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.6 no.3
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    • pp.886-905
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    • 2012
  • Set-top Box (STB) has evolved from being a device just sitting on top of a TV shelf to a device providing a gateway to the Internet for a home network, receiving services from multiple content providers, and enabling and ensuring Quality of Service (QoS) for the streaming media. IP Multimedia Subsystem (IMS), with its promise to provide a converged access network for multimedia service delivery (such as Triple play & Quadruple play services), has to guarantee QoS support. To enable QoS in IMS-based networks, we have designed a set-top box which provides feedback to the service provider to ensure end-to-end QoS. Our set-top box is designed to provide virtual platforms such that it can support multiple service providers. Each service provider is able to manage its own multimedia streams and ensures the desired network performance for each flow. The set-top box also works as a Home Gateway and provides end-to-end QoS support to the client nodes.

A MPEG Audio-Visual Conversational Communication Terminal on the B-ISDN Environment (광대역 ISDN용 MPEG 오디오-비쥬열 대화형 통신단말의 설계 및 구현)

  • Hwang, Dae-Hwan;Cho, Kyu-Seob
    • The Transactions of the Korea Information Processing Society
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    • v.5 no.8
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    • pp.1960-1971
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    • 1998
  • The researches and developments to provide multimedia communication services such as Video on Demand(VoDJ), real time video phonc and multipoint vidco conferencing on broadband ISDN environmcnts have been proceeded with activity. Specifications for Vol) services which is worked by Digital Audio-Visual Council(DAVIC) to support detail technologies including total service system that is consist of VoD server. delive[\! networl, and Set-Top Box(STB) had been already finished and ITU-T SG16 also recommended the standards of H.300 series terminal aspects for conversational multimedia services, But the architectures of multimedia tenninals recommended and specified by these organizations do not have an efficient st11lcture to provide all of retrieval, distrihution and conversational service due to a different point of view about multimedia terminals and services. In this paper, we analyzed the recornmendatio!E and the specifications of intemational public and private organizations like lTU-T, DAVIC and ATM forum. As a result of these analysis. we propose an efficient terminal architecture, and then we have designed, lmplemented the multimedia communication terminal for offering VoI) and real- time conversation ,,, functional module test according to the individual commumication service session and confirined the validiry or terminal implemented to be used on broadband ISDK environments.

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