• Title/Summary/Keyword: 난시청

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Improvement of Fringe Area using ICS Extremely Low Power Repeater (ICS 극소출력 중계기를 이용한 난시청 개선)

  • Choi, Soo-cheol;Cho, Ki-ryang
    • Journal of Broadcast Engineering
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    • v.21 no.1
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    • pp.97-104
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    • 2016
  • In this paper, in order to relieve the area of terrestrial DTV broadcasting, we watch the same channel DTV Repeater output ICS using nano field test and analysis of effect was proven. Interspersed throughout the blanket area(natural) and buildings(artificially) 7 established the field selected as the test area, and each station(KBS1, KBS2, MBC, SBS, EBS) Extremely Low Power ICS Repeater the same channel of the receiving field strength and after install, SNR(Signal to Noise Ratios) verify the equipment to measure the efficacy and minimal output for future ICS type nav should you wish to provide a research-based for the spread.

Low Power On-channel Repeater for Terrestrial DTV Broadcasting Services(I) : Technical Regulations (지상파방송 난시청 해소를 위한 특정소출력 DTV 중계기(I): 기술기준연구)

  • Kwon, Won-Hyun
    • Journal of IKEEE
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    • v.16 no.3
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    • pp.244-250
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    • 2012
  • In this paper, worldwide standards and regulations on broadcasting services are reviewed to improve the fringe area of terrestrial DTV broadcasting services. Using these results, in-band/out-of-band emission requirements of low power DTV repeater with 10mW/MHz radiating power are proposed, and experimentally evaluated and verified. Using the proposed regulations, compact and cost-effective DTV repeater can be easily implemented to broaden DTV broadcasting coverage and to improve small/medium size DTV fringe areas.

Low Power On-channel Repeater for Terrestrial DTV Broadcasting Services(II) : Implementation and Field Trials (지상파방송 난시청 해소를 위한 특정소출력 DTV 중계기(II): 구현 및 현장시험)

  • Kwon, Won-Hyun
    • Journal of IKEEE
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    • v.16 no.3
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    • pp.251-257
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    • 2012
  • In this paper, low power on-channel DTV repeater is implemented to improve the fringe area of terrestrial DTV broadcasting services and its effectiveness is verified by field trials. System requirements of on-channel repeater are drive from received signal model and gain transfer model. Implemented on-channel DTV repeater has coverage of about 1km with 10mW/MHz output power. Experimental results show that implemented system can effectively improve small/medium size DTV fringe areas in Korea.

Design of a Compact Antenna for DTV Reception (DTV수신용 소형 안테나 설계)

  • Kim, Tae Yong;Lee, Jong-Ig
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2015.10a
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    • pp.73-74
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    • 2015
  • In this paper, a digital terrestrial TV reception antenna which can be applied to the fade zone was designed and investigated. The proposed antenna was configured for a wire antenna structure with $16cm{\times}14cm$, and the antenna parameters are calculated by using the MoM method. The proposed antenna can be used to the receiver for domestic digital broadcast in UHF.

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The frequency utilization research for the terrestrial broadcasting direct received environment construction and next generation broadcasting (지상파방송 직접수신 환경 구축과 차세대방송을 위한 주파수 활용 연구)

  • Park, Sungkyu;Lee, Changhung;Park, Jongwon;Kim, Gwangho;Park, Gooman
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2011.11a
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    • pp.27-30
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    • 2011
  • 본 논문에서는 방송용주파수를 좀 더 효율적으로 활용하여 시청자가 쉽게 지상파방송을 직접 수신할 수 있도록 DTV 방송 수신환경 개선 방법에 대해 찾아보고 난시청해소와 차세대방송에 필요한 주파수 소요량을 정량적으로 제시하고자 한다. 특히 디지털전환 이후에 회수되는 700MHz 대역 (108MHz 주파수폭)에 대하여 UDTV 와 Full-HD 3DTV 기술을 적용한 차세대방송을 구축할 때 난시청해소와 시청자와 방송과 산업에 미치는 효과를 제시한다.

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A Study on Possibility of RO as a Local Media (지역매체로서의 중계유선방송(RO)의 가능성에 대한 연구)

  • Nam, Chong-Hoon
    • Journal of Digital Contents Society
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    • v.9 no.2
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    • pp.213-223
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    • 2008
  • This study attempted to analyze background and industrial difference of RO and SO. RO was launched for solving a problem of terrestrial broadcasting. After solving a problem of terrestrial broadcasting system, RO has played a roll as a local media. On the other hand, SO was launched by government's policy so SO has been protected and brought up by government. Because market of RO and SO is overlap and competitive, RO has been restricted by government for issuing new license and renewal of permission. Presently, environment of media has been changed very dramatically, so various niche media are needed for various customer's needs. In addition, local media are in trouble of playing a role as a public broadcasting service in Korea. Therefore, RO might be a good solution. In this study for the analysis of the user's needs a survey was conducted. This study shows possibility of RO's roll and function as a local media.

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An Efficient Retransmission Method of T-DMB Emergency Alert Information using Wi-FI (Wi-Fi 를 이용한 T-DMB 재난 정보의 효율적인 재전송 기법)

  • Kim, Minhyuk;Chang, Sekchin
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2014.06a
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    • pp.234-236
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    • 2014
  • 본 논문은 기존의 T-DMB(Terrestrial Digital Multimedia Broadcasting) 재난 정보 신호를 Wi-Fi(Wireless Fidelity)를 이용하여 재전송하는 기법을 제시한다. 각종 재난이 발생하는 지역의 T-DMB 난시청 구간에 대해서 Wi-Fi 를 이용하여 재난 정보 신호를 재전송함으로써 재난 정보 신호를 받지 못하는 시청자에게 신속한 재난 정보 서비스를 가능하게 해준다. 재난이 발생한 지역에서 T-DMB 재난 정보를 수신할 수 없는 시청자에게 AP(Access Point)를 이용하여 재난 정보를 재전송하는 것이 목적이다. 이에 본 논문에서 제안하는 Wi-Fi 를 이용한 재전송 기법은 T-DMB 신호를 수신하지 못한 시청자에게 재난정보를 효율적으로 재전송함으로써 해당 지역에 더 높은 재난 정보 수신률을 제공할 뿐만 아니라 국민의 생명과 안전을 도모할 수 있다.

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