• Title/Summary/Keyword: broadcasting area

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Redundancy operation method for a distributed public address system (분산형 전관방송 시스템의 이중화 운영 방법)

  • Ryu, Taeha;Kim, Seungcheon
    • Journal of the Korea Convergence Society
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    • v.11 no.8
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    • pp.47-53
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    • 2020
  • In the case of a failure due to equipment deterioration in the public address system or a worker's mistake during construction, broadcasting becomes impossible. In this situation, we have designed a more advanced management broadcast system that can broadcast. The broadcasting service is operated using main broadcasting device, and local broadcasting device operates separately only in the local area. If the main broadcasting device becomes inoperable, the procedure for transferring the control activates the device with the local broadcasting devices based on data backed up by the main controller. This paper proposes an improved method of the conventional emergency broadcasting device duplication method. The existing method could not use the standby equipment in the normal state, but in the proposed method, the standby equipment can be used as local broadcasting equipment in usually. This method enables stable system operation while minimizing resource waste due to redundant configuration of expensive devices.

A Study on the Field Strength Prediction of a Ground-wave Based Time Broadcasting Transmitter Station in the Korean Peninsula

  • Lee, Sun Yong;Choi, Yun Sub;Hwang, Sang-Wook;Yang, Sung-Hoon;Lee, Chang-Bok;Lee, Sang Jeong
    • Journal of Positioning, Navigation, and Timing
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    • v.3 no.2
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    • pp.83-90
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    • 2014
  • In this study, to improve an existing ground-wave based time broadcasting system, a study that predicts the field distribution and field strength of the transmitted signal of a new ground-wave based time broadcasting system was performed. The prediction area was assumed to be the Korean peninsula; and to reflect the mountainous terrain of the Korean peninsula in the prediction of the variations of field distribution and field strength, a new prediction method based on the Monteath model was proposed and utilized. As field distribution changes depending on the position of a transmitter station, potential sites for the transmitter station were selected considering the geographical characteristics. In this regard, the ground conductivity information of North Korea cannot be obtained, and thus, the ground conductivity of the North Korean region was reflected considering the geological characteristics of South Korea and North Korea. Based on this, the variations of field distribution and field strength were predicted by setting the Korean peninsula as the prediction area, and the prediction results depending on the position of the transmitter station were discussed.

Accuracy Analysis of baseline determination using Broadcast ephemeris and Precise ephemeris in GPS surveying (방송력과 정밀력의 사용에 의한 GPS 측량의 정확도 분석)

  • Kim, Cheol-Young;Lee, Suk-Bae;Do, Sang-Gyeong
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.27 no.2
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    • pp.149-157
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    • 2009
  • The orbit ephemeris of Global Positioning System(GPS) is one element to determine the surveying accuracy and there are broadcasting ephemeris and precise ephemeris, IGS rapid orbit and IGS ultra rapid orbit in the orbit ephemeris of GPS. In this study, test area was selected in Uljin, Kyungsanbukdo and GPS surveying was accomplished at 37 points in the test area. Then baseline solution was done on 74 baseline using broadcasting ephemeris and precise ephemeris and analysis by TGO and the results were compared. Comparison results were showed that there were nearly no difference between the two results but in case of relative precision of the baseline, it was slightly better the baseline results of precise ephemeris which showed 0.706ppm than the baseline results of broadcasting ephemeris which showed 0.708ppm.

Design of LBSs Using DGPS and Digital Mobile Broadcasting System

  • Kwon, Seong-Geun
    • Journal of Satellite, Information and Communications
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    • v.8 no.2
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    • pp.22-28
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    • 2013
  • In this paper, new LBS (location based service) are proposed using conventional DMB (digital multimedia/mobile broadcasting) system. LBS applications are proposed that can be suitable for the subway and ground transportation based on S-DMB (satellite-DMB) and T-DMB (terrestrial-DMB) respectively. In the shaded area such as subway, the broadcasting signal transmitted from the satellite of S-DMB system should be retransmitted by the earth repeater called the gap filler and each gap filler has its own identification value called the gap filler ID which introduces the area in which the gap filler was installed. Therefore, the LBS can be implemented by using the gap filler ID of S-DMB on the subway in which the GPS (global positioning system) can't be received. Unlike the LBS on the subway, the combination of T-DMB and DGPS (differential GPS) will be introduced as a way for ground transportation. Generally, DGPS has been designed to compensate the position value calculated from the GPS signal so that positioning error of about 1 meter can be obtained by using DGPS information. T-DMB system transmitting DGPS signal will be expected to be commercial in Korea and, if using DGPS information transmitted through T-DMB network, LBS with more precise positioning than GPS alone can be implemented in the ground vehicles.

Knowledge Management Planning for Home Shopping Industries: Focus on Broadcasting Management and Operation (홈쇼핑 산업을 위한 지식경영 계획: 방송운영업무를 중심으로)

  • Jeong, Keun-Chae
    • Information Systems Review
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    • v.5 no.2
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    • pp.131-149
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    • 2003
  • In this paper we propose a knowledge management plan for the home shopping industry. Among whole business areas we focus on the business area of the Broadcasting Management and Operation(BM&O). We analyze problems embedded in the business area BM&O, design a knowledge management model (including business processes, information systems, organizations, regulations, and culture) for overcoming the problems, and finally make an action plan for implementing the model into the home shopping company. We expect the proposed model and action plan will be used as an useful reference model for maintaining one's competitive power in the home shopping markets.

Media Groups' Management Strategies: Business Areas, Platform Strategies, Content Distribution Strategies and Business Strategies (미디어그룹의 경영전략 : 사업영역, 플랫폼 전략, 콘텐츠유통 전략, 비즈니스 전략)

  • Kim, Dug Mo
    • Journal of Digital Convergence
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    • v.14 no.2
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    • pp.157-167
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    • 2016
  • This article was to study the following three purposes. First, to identify and describe the platform strategies, content strategies, and management challenges that currently define the South Korean terrestrial broadcasting business. Second, to analyze from various angles the business area of global media group, in terms of platform strategies, content strategies, and management challenges. Third, to suggest how Korea's terrestrial broadcasting industry can become competitive with media groups. Looking at the digital conversion process and strategy as well as terrestrial broadcasting in each country, when digital switchover point and Action Plan, and the similarities in values and the role of digital terrestrial broadcasting times there are differences may be found.

Comparative Analysis on the Cremation Rate of the Capital Area and the Increase Rate of Cremated Bodies Using the Online Cremation Reservation Service in Funeral Information System

  • Choi, Jae-sil;Kim, Jeong-lae
    • International Journal of Internet, Broadcasting and Communication
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    • v.11 no.3
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    • pp.87-94
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    • 2019
  • In the study, we show the annual average increasing rate of death bodies in the capital area was 2.1% while the annual average increasing rate of cremated bodies was 4.5%. As the annual average increasing rate of cremated bodies was about 2.1 times higher than the annual average increasing rate of death bodies, the increase rate of cremated bodies contrast to the increase rate of death bodies was relatively high. Also, the cremation rate of the capital area was increased by 9.5% from 80.3% in 2011 to 89.8% in 2017 while the increase rate of cremated bodies was 27.2%(N=21,694 people) from 79,866 people in 2011 to 101,560 people in 2017. Thus, the increase rate of cremated bodies contrast to the increase of cremation rate of the capital area was relatively very high. On the basis of 2017, the utilization rate of public cremation facilities in by capital area was 94.5% in Incheon Metropolitan City, 91.1% in Seoul Metropolitan City, and 20.9% in Gyeonggi-do, which showed huge differences in the utilization rate of public cremation facilities in the jurisdiction area of by capital area. Focusing on the actual state shown in the results of this study above, it would be necessary for Seoul Metropolitan City to carry forward a supply & demand policy of cremation facilities through the extension of cremation furnaces, for Gyeonggi-do to carry forward a policy to build the public cremation facilities focusing on the basic local government in the jurisdiction area, and for Incheon Metropolitan City to enforce the measures for the joint use of cremation facilities with the basic local government in the adjacent Gyeonggi-do jurisdiction area in order to improve the efficiency of the operation of cremation facilities.

Protection of Digital TV from Cognitive Radio Interference

  • Yoon, Young-Keun;Hong, Heon-Jin;Choi, Ik-Guen
    • ETRI Journal
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    • v.29 no.3
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    • pp.393-395
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    • 2007
  • Analytic modeling and computational simulation for the protection of DTV from cognitive radio interference are performed. Protection is achieved by using the protection ratio, which is derived through system modeling and its analysis. On the frequency coordination between digital TV and cognitive radio, an analysis in a co-channel environment, in a rural area in Korea, is performed.

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Scheme for Communication Service in Coastal Area Using Mobile IP Router with Multiple Interfaces (중인터페이스를 가진 이동 IP 라우터를 이용한 해안 지역 통신 서비스 방안)

  • Park, Chun-Kwan
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.11 no.6
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    • pp.177-182
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    • 2011
  • These days as there are growing the number of vessel sailing, diverse aquaculture industries, fishing works, and leisure activities in coastal area, the diverse communication services have been required for secure voyage information. This paper addresses the scheme for costal area service using mobile IP router with multiple interfaces. For this, this system has the wireless interfaces, such as WiBro, HSDPA, and WLAN that can provides vessels with divers communication services, and can provide the vessels with the diverse information communication services in real-time through wireless communication network installed in costal area. So this can provide the infrastructure that supplies the authorized seamless information communication services.

A Study on Creation of Fair Transaction Environment between Platform Operator and Contents Provider in Broadcasting Industry (방송 산업 내 플랫폼사업자와 콘텐츠사업자 간 공정거래환경 조성 연구)

  • Yonghee Kim;Joonho Do
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.23 no.2
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    • pp.175-183
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    • 2023
  • In a broadcasting market environment that has a close interdependence between platform operators and content operators, problems such as conflicts over program usage fees, and home shopping transmission fees are intensifying. This study attempted to analyze the environment of the domestic broadcasting market and present implications, analyze the cause of user fee conflict between the platform and PP, and propose detailed alternatives to resolve user fee conflict disputes. The results of environmental analysis on the domestic broadcasting market are as follows. First, the growth engine of the broadcasting industry has changed to direct resources such as service usage fees and content fees, and commerce is increasing. Second, as hegemony in the domestic broadcasting market changes from terrestrial to paid broadcasting and OTT, monopolies in the entire broadcasting area are being dismantled by voluntary entry. Third, the need to overhaul the existing regulatory system is increasing due to the dismantling and reorganization of the existing broadcasting market. On the other hand, this study proposed a strategy to diversify the profit structure of PP, supply program after pre-contracting, and strengthen CPS bargaining power in order to resolve disputes between paid broadcasting platforms and PP sharply. In particular, as strategies to strengthen CPS bargaining power of small and medium-sized SOs, it proposed to jointly improve CPS-related systems through IPTV and individual SOs, to redefine fees for programs and to voluntarily use programs.