• Title/Summary/Keyword: Broadcasting system

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KBS ALL-IP based UHD LIVE Broadcasting System (KBS ALL-IP 기반 UHD LIVE 방송시스템)

  • Shin, Jongseob;Koh, Ujong;Lee, SeungHo;Kim, Chulhwan;Kim, Bongseong;Choi, Mugyeong;Song, Jaeho;Ko, Yongseok;Lee, Donil;Choi, Minyeong;Lee, Jaegwan;Choi, Jongcheol;Hwang, Inju;Cho, Seungwan;Kim, Byeongu;Park, Hocheol;Woo, Deokjun;Park, Insu;Kim, Jinhong;Hong, Seokmyeong;Kim, Seongtae;Kim, Haejung;Cho, Hyeongjun;Shin, Hyeonuk;Yu, Gyeongho;Lee, Munsik;Ham, Jeongwan
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2018.11a
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    • pp.186-189
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    • 2018
  • KBS는 차세대 방식인 IP전송 기술을 UHD방송에 적용하기로 결정하고 2017년 9월부터 2018년 3월까지 약 7개월에 걸쳐 ALL-IP UHD부조정실 구축을 완료했다. 이후 약 3개월간의 시뮬레이션 기간을 거쳐, 현재 KBS 1TV '아침마당'과 '무엇이든 물어보세요' 를 생방송으로 제작하고 있고 KBS 2TV '그녀들의 여유만만'을 녹화 제작하고 있다. 본 논문은 UHD비디오신호와 오디오신호를 ALL-IP로 전송하기 위해 참조한 표준기술과 각 파트별 구축 세부내용을 소개한다. 또한 향후 지속적으로 발전할 IP제작 시스템에 대해 효율적인 계획과 대응을 할 수 있도록 구축사례에 대한 경험을 결론으로 논한다.

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An HDTV-Compatible 3DTV Broadcasting System

  • Hur, Nam-Ho;Lee, Gwang-Soon;You, Woong-Shik;Lee, Jin-Hwan;Ahn, Chung-Hyun
    • ETRI Journal
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    • v.26 no.2
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    • pp.71-82
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    • 2004
  • We introduce a high-definition three-dimensional television (3DTV) broadcasting system that is fully compatible with the existing transmission system of high-definition television (HDTV). Specifically, we developed high-definition 3DTV broadcasting subsystems including a 3DTV camera, 3DTV video multiplexer and demultiplexer, 3DTV receiver, and 3DTV outdoor broadcast van. To verify the developed subsystems, we performed experimental services of 3DTV broadcasting during the 2002 FIFA World Cup Korea/Japan. According to our subjective evaluation test, 88% of 273 viewers rated the perceived depth of 3DTV as “Good,” and 36% of the viewers preferred 3DTV to other digital broadcasting services.

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KBS Local Standard Audio File System (지역 맞춤형 파일기반 Radio 제작·송출시스템 국산화)

  • Kim, Jihoon;Kim, Eunwoo;Koh, Woojong;Lee, Seungho;Lim, Uikyo;Choi, Minyeong;Eun, Tacki;Song, Sangkeon;Kim, Dohyung;Kwon, Youngbu
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2019.11a
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    • pp.98-101
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    • 2019
  • KBS는 지역 시청자를 위하여 18개 지역(총)국에서 TV, 라디오 로컬 방송을 제작/송출하고 있다. 본 논문은 이중 지역(총)국의 라디오 매체에 대하여 2017년 개발 완료된 KBS 표준형 오디오파일시스템의 개발 및 적용 목적, 개발 내용과 2018년, 2019년 12개 지역(총)국에 적용한 사례에 대하여 소개한다.

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Transmission of Traffic Information Using a Terrestrial Digital Multimedia Broadcasting System

  • Cho, Sam-Mo;Kim, Geon;Jeong, Young-Ho;Ahn, Chung-Hyun;Lee, Soo-In;Lee, Hyuck-Jae
    • ETRI Journal
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    • v.28 no.3
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    • pp.364-366
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    • 2006
  • This letter introduces an efficient transmission of traffic information through a terrestrial digital multimedia broadcasting system, which is a multimedia and mobility empowered option of the European digital audio broadcasting system. By adapting Korean characteristic traffic information into the transport protocol expert group messages in the traffic information delivery, a highly efficient traffic information system was implemented and tested in Korea.

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Enhanced-xVSB Development for Next Generation Terrestrial DTV Transmission System (차세대 지상파 DTV 전송방식 시스템을 위한 Enhanced-xVSB 개발)

  • Kim Sung-Hoon;Ji Kum-Ran;Lee Jae-Youn;Kim Seung-Won;Lee Soo-In;Kim Chang-Joong;Lee Ho-Kyoung
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2004.11a
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    • pp.281-284
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    • 2004
  • This paper described an Enhanced-xVSB system for improving mobile/pedestrian reception performance to the ATSC DTV 8-VSB transmission standard. E-xVSB system can transmit a mixture of normal (8-VSB) stream and enhanced (robust) stream. The robust stream has a higher threshold of visibility (TOV) compared to the standard stream, and legacy receivers ignore the robust packets. Thus, Enhanced-xVSB system is fully backward compatible with a current ATSC standard. for mobile and portable reception support, E-xVSB system adopts a reduced constellation method as well as enhanced trellis-coded modulation scheme. E-xVSB system supports a variety of enhanced modulation schemes: Pseudo-2VSB, Enhanced-4VSB, modified Enhanced-8VSB and Hybrid-VSB. Proposed E-xVSB system performs well under serious dynamic multipath reception environment.

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N-Screen Live Production System Design And TV-Mobile Simulcast (TV-모바일 동시 방송을 위한 멀티 플랫폼 방송 시스템)

  • Song, Sangkeon;Kim, Jihoon;Kim, Dohyung;Kwon, Youngbu;Lee, Seungho;Kim, Cheolhwan;Eun, Takgi;Cho, Hyeongjun;Kim, Hogi;Cho, Injun
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2018.11a
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    • pp.190-193
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    • 2018
  • 통신 기술의 발달 등에 따라 소비자에게 스마트폰은 일상화되었고, 이는 미디어 생태계에 큰 영향을 끼쳤다. 본 논문에서는 급변하는 미디어 시장에서 새로운 플랫폼과 N-스크린 서비스의 중요성과 한국방송공사에서 국내 최초로 설계하고 제작한 모바일-TV 동시 생방송 프로그램 시스템에 대해 소개한다. 특히 설계된 시스템이 실제 방송 환경에서 어떻게 적용되어 송출되었는지 소개하고 현재 방송 제작 여건의 한계와 해결방안에 대해 논한다. 마지막으로 N-스크린 서비스를 실제 방송기술에 적용하고 확장할 수 있는 방법과 향후 전망, 그리고 KBS가 급변하는 미디어 생태계 환경에서 생존하기 위해 연구, 개발하며 나아갈 방향에 대해 논한다.

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Development of Interactive Data Broadcasting System Compliant with ATSC Standards

  • Jeong, Jong-Myeon;Lee, Yong-Ju;Park, Min-Sik;Choi, Ji-Hoon;Choi, Jin-Soo;Kim, Jin-Woong
    • ETRI Journal
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    • v.26 no.2
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    • pp.149-160
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    • 2004
  • In this paper, we present an interactive data broadcasting system compliant with the Advanced Television Systems Committee (ATSC) standards. The proposed system provides users not only with various data broadcasting services but also remote interactive services. For various data broadcasting services, we have adopted a synchronized data injector that calculates the transmission time of synchronized data accurately and multiplexes synchronized data with the data of an MPEG-2 audio-visual program according to the calculated transmission time. To support remote interactive services, we designed and implemented a return channel server connected on a bi-directional interaction channel. Test results show that the proposed system provides both an asynchronous and synchronized data broadcasting service and remote interactive service appropriately.

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Localization and field test of UHD-TVR to improve UHD reception environment (UHD 난시청 해결을 위한 UHD-TVR 국산화 개발 및 필드테스트)

  • Park, Seungkeun;Lee, Jaekwon;Koh, Woojong;Jang, Hojin;Park, Minho;Jeong, Jongwan;Jung, Jeagab;Jun, Sungsang;Kim, Jaeman;Kim, Huengsug;Kim, Jaekyung
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2019.11a
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    • pp.151-154
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    • 2019
  • 국내 지상파 방송 3사는 세계최초로 2017년에 지상파 UHD 본방송 서비스를 시작하였다. 지상파 UHD 방송은 ATSC 3.0 표준 기반으로 단일주파수로 방송망을 구축할 수 있으므로 각 송신소별 커버리지 중첩지역에서 방송망을 효율적으로 설계하는 것이 필요하다. 또한, ATSC 3.0 송신 장비를 실 방송환경에서 운용하기 위해서는 H/S 와 같은 안정적인 형태로 장비가 구축되어야 한다. 본 논문에서는 2017년 수도권 UHDTV 본방송이 진행된 이후, KBS에 구축한 수도권 UHD-TVR 구축 과정과 수도권 UHDTV 방송망 분석을 위한 필드테스트 결과에 대해 살펴보고자 한다.

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Transmission Performance Analysis on Digital Multimedia Broadcasting System (이동멀티미디어방송 시스템의 전송성능 분석)

  • Lee, Hyun;Park, So-Ra;Yang, Kyu-Tea;Hamn, Young-Kwon;Lee, Soo-In
    • Journal of Broadcast Engineering
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    • v.8 no.3
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    • pp.228-237
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    • 2003
  • Eureka-147 DAB(Digital Audio Broadcasting) system on which DMB(Digital Multimedia Broadcasting) system is based, was designed for the requirements of CD qualify audio with ${10}^{-4}$ bit error rate. Audio program may be primary service in DAB system, but multimedia program can be primary service in DMB system. Therefore, the bit error rate required must be below ${10}^{-7}$${10}^{-8}$ to transmit multimedia data via DMB channel. In order to meet the requirements and keep backward compatibility of DAB system we propose an outer channel coding scheme using Reed-Solomon coding and convolutional interleaving. This paper shows the simulation results for DMB channel performance based on mobile channel model. Also, it describes the needs and the effects of the outer channel coding.