• Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
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• v.8 no.8
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• pp.825-834
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• 2018

Broadcasting is a basic data communication method for interconnection networks. There are two types of broadcasting. One-to-all broadcasting is to transmit a message from one node to all other nodes and all-to-all broadcasting is to transmit a message from all the nodes that have messages to other nodes. And by the using way of the transmission port per unit time, there are two schemes of broadcasting. Single port telecommunication(SLA) is to transmit messages from one node that contains the messages to one adjacent node only and all port telecommunication(MLA) is to transmit messages from one node to all adjacent nodes within a time of unit. Matrix hypercube is that an interconnection network has improved network cost than that of hypercube with the same number of nodes. In this paper, we analyze broadcasting scheme of matirx hypercube. First, we propose one-to-all and all-to-all broadcasting algorithms of matrix hypercube. And we prove that one-to-all broadcasting times are 2n+1 and $2{\lceil}{\frac{n}{2}}{\rceil}+1$ based on the SLA and MLA models, respectively. Also, we show all-to-all broadcasting time using SLA model is $5{\times}2^{\frac{n}{2}}-2$ when n=even, and is $5{\times}2^{\frac{n-1}{2}}+2$ when n=odd.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.15 no.1
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• pp.85-93
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• 2015

This research try to find how to construct On & Off Marketplace to activate exporting of broadcasting contents by Delphi survey. This research is based on environment of broadcasting contents such as OTT and reinforcement for broadcasting contents marketplace of foreign countries. This research find that global marketplace of broadcasting contents should be constructed by convergence of online and offline, and should adopt new technology to make easy global distribution in new broadcasting environment, and also open global festival with offline marketplace of broadcasting contents. korea will be asia hub for global distribution of broadcasting contents through this task.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2012.07a
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• pp.192-194
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• 2012

본 논문은 소규모 지역에서의 데이터 통신을 이용한 하이브리드 방송 송출 시스템 및 수신 시스템에 관한 것으로 보다 상세하게는 전시회나 박물관 등 지역적 범위가 제한되는 환경에서 와이파이 등의 근거리 인터넷망을 이용하여 해당 범위 내의 사용자만 신규 서비스를 볼 수 있도록 하는 시스템 및 방법에 관한 연구로, 제안된 하아브리드 방송 서비스 송출 시스템은 방송 데이터 수신부, DMB 전송 프레임 멀티플렉서, DMB 전송 프레임 송출부, 부가 정보 송출부로 구성되며, 방송 데이터 수신부는 신규 서비스에 대한 방송 데이터 및 부가 정보를 수신한다. 또한, 송출 시스템의 DMB 전송 프레임 멀티플렉서는 방송 데이터를 이용하여 신규 서비스 앙상블(Ensemble)을 구성하는 DMB 전송프레임을 생성하며, DMB 전송 프레임 송출부는 생성된 DMB 전송 프레임을 송출하고, 부가 정보 송출부는 수신된 신규 서비스의 부가 정보를 인터넷망을 통해 송출한다. 따라서, 제안된 하이브리드 방송 시스템의 경우, 전시회나 박물관 등 지역적 범위가 제한되는 환경에서 와이파이 등의 근거리 인터넷망을 이용하여 해당 범위 내의 사용자만 신규서비스를 볼 수 있으며, 관람객이 아닌 일반 사용자들 본인의 단말기가 채널스캔을 실행했을 경우, 원하지 않는 행사관련 방송 데이터가 수신 채널 목록에 저장되지 않도록 할 수 있다.

• Korean journal of communication and information
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• v.48
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• pp.25-45
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• 2009

The convergence of broadcasting & telecommunication is not a reality by itself, but recognized as a reality by the discourse which defines and explains it. It is the premise from which this article aims at studying how the discourse on the broadcasting-telecommunication convergence is formed, practised and transformed. This study compares the case of France with the case of Korea in order to show how the same discourse can engender different consequences and evolve in a different way in different socio-political situations. The discourse of the convergence was born as a scientific knowledge in the reports of the European Commission and OECD, and accepted as an important object generating social debates. Then, the discourse faces the resistance of pre-existent discourses in France, while it spreads without clash in South Korea. The French discourse results in a horizontal regulation of contents and networks, while the Korean discourse creates a unique regulator for both traditionally distinguished sectors. Finally, unlike France, the scientific discourse of the convergence in South Korea is transformed into even a political, imaginary or utopian discourse.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2016.06a
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• pp.73-74
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• 2016

본 논문에서는 ITU-R M.1798-1 에 기반한 해상 HF 데이터 통신을 위한 세 가지 종류의 디지털 통신 방식을 소개하고 비교한다. 처음 두 개의 시스템은 3 kHz 대역폭을 사용하는 디지털 통신 방식으로서 OFDM 방식과 멀티 톤 방식의 디지털 모뎀이며, 마지막 세 번째 방식은 10-20 kHz 의 대역폭을 사용하는 OFDM 방식의 디지털 통신 모뎀이다. 본 연구를 통하여 각각의 통신 방식에 대한 물리계층 규격을 비교 분석한다.

• Standardization Trend in Telecommunications
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• s.23
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• pp.56-70
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• 1992

본 보고서는 주로 통신망 및 방송국과 같은 정보제공 기관을 상호 연겨라는 정보구조의 전반적인 개념적 구조를 소개하고 설명합니다. 그리고 사용자의 관점에서 제공된 정보처리 서비스와 사업의 제휴관계가 2차원의 맵 형태로 표현되며, 그 맵과 연관된 맥스웰의 전자기 방정식과 방송서비스 등을 사용하여 통신 서비스에 적용하였습니다. 전자정보전송의 합법적 통합구조와 ''국지적이나 공공의 정보망''의 전개를 위한 연구대상을 제안하고 설명하였습니다. 그리고, 현재 통신과 방송에 관련된 법규들을 간략하게 조사하였습니다.(일본의 경우를 중심으로)

• Journal of Satellite, Information and Communications
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• v.9 no.1
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• pp.6-12
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• 2014

The traditional broadcasting service has advanced into a smart media service with the help of communication network. in In the smart media ecosystem, a variety of innovative media services have been provided by new players. However, terrestrial broadcasting service companies seem to lag comparatively behind new players in spite of their powerful contents production capacity and stable terrestrial media delivery networks. In this paper, we design a proposed media platform based on a set-to-box (STB) with various new function for terrestrial ultra-high definition(UHD) broadcasting service. Also we suggest specific transmission network architecture and platform components for UHD broadcasting service. The proposed media platform is expected to increase the number of direct home reception and to enhance the right of the free-viewers which is one of the natural mission of terrestrial broadcasting company. Also it can provide some profit model of UHD terrestrial broadcasting service with new value-added services.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.30 no.5B
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• pp.317-323
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• 2005

Broadcast disks are suited for disseminating information to a large number of clients in mobile computing environments. In broadcast disks, the server continuously and repeatedly broadcasts all data items in the database to clients without specific requests. The clients monitor the broadcast channel and retrieve data items as they arrive on the broadcast channel. The broadcast channel then becomes a disk from which clients can retrieve data items. This paper proposes a Timestamp based Concurrency Control (TCC) scheme to preserve the consistency of read-only client transactions, when the values of broadcast data items are updated at the server. Previous schemes tried to reduce transaction aborts by consuming considerable amount of downlink communication from the server to clients for transferring control information. On the other hand, the TCC uses a timestamp field of each data item to describe execution order of server transactions. Clients can allow more transaction executions by checking consistency of their read-only transactions with timestamps of data items. As a result, the TCC can reduce the abort ratio of client transactions with minimal control information to be broadcast from the server.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.12 no.1
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• pp.17-27
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• 2012

Broadcast-based data dissemination has become a widely accepted approach of communication in the mobile computing environment. However, with a large set of data items, the expected delay of receiving a desired data increases due to the sequential nature of the broadcast channel. This paper explores the issue of designing proper data allocation on multiple broadcast channels to reduce this wait time, and proposes a new data allocation scheme named near optimal data allocation(NODA). The proposed scheme first partitions all data items in K group based on the theoretical lower-bound of the average expected delay to determine data items which each broadcast channel has to broadcast. Then, NODA further partitions each group of data items in B groups using extended dynamic programming algorithm to broadcast data items allocated on the same broadcast channel in different frequencies. The proposed scheme is capable of minimizing the average expected delay time since it can broadcast data items allocated on the same channel reflecting their popularities.

• TTA Journal
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• s.40
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• pp.75-79
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• 1995