• Title, Summary, Keyword: DMB

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A Research on types of DMB advertising according to features of DMB Media (DMB의 미디어와 기술 특성에 따른 DMB광고 유형과 종류에 관한 연구)

  • Ahn, Jong-Bae
    • Asia-Pacific Journal of Business Venturing and Entrepreneurship
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    • v.3 no.4
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    • pp.59-88
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    • 2008
  • For the success of the DMB market to meet consumers' demands for Ubiquitous Media and strengthen the nation's competitiveness, it's inevitable for us to activate DMB advertising as of main profit source for DMB Media, and to develop various types of DMB advertising which are linked to the profit model. So I'd like to look over the various types of DMB advertising which are suitable for DMB features as one of the efforts to activate DMB advertising. First of all, I've figured out what kinds of advertising are available for new media and which related technologies are required for DMB media. Through this research, I could find out what features of new media such as cable broadcasting, Internet and Mobile have become the source of developing various types of advertising and how to a great part to activate new media advertising markets by making the best use of their media features. This research also shows that DMB advertising has the high potential to be developed in various and effective types and kinds of advertising with its media feature and technological feature. This research observing DMB advertising cases showed that DMB advertising can be divided into 6 types such as forms, purposes, techniques, advertising positions, the use of LBS(Location Based Service), coupons and it could be developed into various kinds of DMB advertising dependent on each type. On the other hands, it would be great to have continual researches and follow-ups for various types of DMB advertising and the verification of the effectiveness for DMB advertising by performing potential DMB advertising.

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DMB Filecasting Service Technology (DMB 파일캐스팅 서비스 기술)

  • Choi, Ji-Hoon;Yang, Kyu-Tae;Cha, Ji-Hun
    • Journal of Broadcast Engineering
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    • v.17 no.1
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    • pp.152-164
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    • 2012
  • DMB provides various kinds of data services such as BWS and TPEG service in addition to audio and video services. But recently the necessity of new business models creating profit has been on the rise due to the saturation of DMB receiver market and break-down of market barrier between mobile IPTV and DMB services. This paper introduces DMB filecasting service technology, which can be expected a new profit-creative business model. The purpose of DMB filecasting service is to transmit non-real time multimedia contents based on DMB AF format to the users through DMB channels. It makes possible to consume DMB contents with any DMB-installed device anytime, anywhere and share them with others. Also DMB filecasting service makes consumption and request of DMB contents possible to be extented to a variety of networks as well as DMB channels. The paper explains the standardization status of DMB filecasting service and various DMB filecasting service scenarios. And also it proposes a signalling methode, a transmission and reception protocol and a receiver structure using DMB broadcasting program guide information.

A Segmentation of DMB Services Market Based on Consumer Preferences to the Terrestrial DMB and Satellite DMB (DMB 서비스 선호 유형별 시장 세분화 연구: 지상파DMB와 위성DMB 비교 분석을 중심으로)

  • Park Yoon-Seo
    • Journal of Korea Technology Innovation Society
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    • v.9 no.1
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    • pp.52-83
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    • 2006
  • This study is to analyze the differences of consumer preferences between the terrestrial DMB and satellite DMB in various segment groups by using survey data. We categorized the consumers by the DMB preference patterns into four groups, i.e., non users group, terrestrial only users group, satellite only users group, dual users group. And then we analyzed the differences among these four segment groups in demographic characteristics, behavior patterns on telecommunication and broadcasting services, life-style, attitudes to DMB services.

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A Study of Visual Contents for Media Diversification - a Focus on DMB - (영상 매체 다변화에 따른 Visual 콘텐츠에 관한 연구 - DMB를 중심으로 -)

  • Jang, Se-Young;Lim, Pyung-Jong;Hyun, Chul-Ju;Kwak, Hoon-Sung
    • Proceedings of the Korea Contents Association Conference
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    • pp.537-540
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    • 2006
  • The success of DMB is controled its contents. Existing broadcasting contents will be retransmitted to DMB in the early stage of broadcasting. However, they must be produced appropriately to the property of DMB. To make good DMB contents, it's very important for us to analyze characteristics of DMB and costumer behaviors of DMB service. In this research, We suggest a production method for DMB contents such as contents length, camera work, visual expression. Contents will be key factor in the success of DMB.

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Bidirectional Personalized Mobile Broadcasting System (양방향 개인맞춤형 모바일 방송 시스템)

  • Lee, Hee-Kyung;Yang, Seung-Jun;Lee, Han-Kyu
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.35 no.2B
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    • pp.361-371
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    • 2010
  • To vitalize the terrestrial DMB market, we introduce a personalized DMB(PDMB) service model based on metadata, especially DMB ECG XML standardized by TTA, under the convergence of broadcasting and telecommunications. Also we introduce the personalized DMB service system developed to validate the conformance of DMB ECG XML standard and the usefulness of DMB ECG service. The personalized DMB service system is described in details from the authoring stage to the consumption stage of the contents. The results of experimental tests for the personalized DMB service system are also introduced in this paper. We finally address the possibility of making successful personalized DMB services in mobile multimedia broadcasting market.

Analysis of laboratory test results on the constellation ratio in hierarchical modulation based AT-DMB (계층변조 기반 AT-DMB의 성상비에 따른 LAB 테스트 결과 분석)

  • Lee, Jae-Hong;Bae, Jae-Hwui;Choi, Seung-Won
    • Journal of Broadcast Engineering
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    • v.14 no.6
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    • pp.721-732
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    • 2009
  • AT-DMB system has been developed to increase data rate up to double of conventional T-DMB in same bandwidth while maintaining backward compatibility. The AT-DMB system adopted hierarchical modulation which adds BPSK signal or QPSK signal as enhanced layer to existing DQPSK signal. The enhanced layer signal should be small enough to maintain backward compatibility and to minimize the coverage loss of existing T-DMB service area. But this causes the enhanced layer signal of AT-DMB susceptible to fading effect in transmission channel. A turbo code which has powerful error correction capability is applied to the enhanced layer signal of the AT-DMB system for compensating channel distortion. We developed the prototype AT-DMB transmitter and receiver systems for performance evaluation. LAB test for analysing the effect of constellation ratio between existing base layer signal and enhancement layer signal, was conducted and the measurement results are shown with analysis comments.

Simulation System of Broadcasting Stream for T-DMB Receiver Test (지상파 DMB 수신기 시험을 위한 방송신호 시뮬레이션 시스템)

  • Kim, Yoo-Won;Sohn, Surg-Won;Cha, Sang-Jin;Jo, Geun-Sik
    • Journal of the Korea Society of Computer and Information
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    • v.13 no.3
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    • pp.115-122
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    • 2008
  • The terrestrial DMB receivers and their application products need many tests such as normal reception, reception state for the noisy environment, reception state changes due to the changes of output power of the DMB signal, and reception state of various environment. Therefore, the real-time simulation system of the terrestrial DMB broadcasting system is a necessity to the terrestrial DMB research institutions. manufacturers, and other related organizations. In the paper, we design the DMB simulation system, which generates the real-time streams of terrestrial DMB broadcast signals and simulates the real DMB broadcasting signals. The system consists of T-DMB signal generator with PCI interface and simulation software for various functional components of program. The study reveals that the implementation of software-based T-DMB simulation system is possible with low cost. Through various experiments, we evaluate the performance of the simulation system, and we provide the future directions of research.

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TTA DMB 프로젝트그룹

  • Lee, Sang-Un
    • TTA Journal
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    • pp.23-26
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    • 2006
  • 위성 DMB 및 지상파 DMB 기술표준 개발 및 제정업무를 담당하고 있는 DMB PG는 2004년 3월 11일 TTA의 조직개편으로 DMB PG(PG307)라는 명칭을 사용하고 있으며, 이전에는 음성방송연구반이었다. DMB 관련 업무는 2003년 6월 13일에 개최된 음성방송연구반 제 18차 회의 때부터 개시되어 2004년 3월 11일 DMB PG가 출범하기까지 총 32차 회의까지를 개최하며 수행되었고, 2004년 3월 11일 DMB PG로 새롭게 출범한 이후 2006년 3월 15일까지 총 42차 회의를 개최하여, 약 3년 6개월이라는 기간 동안 총 74차의 회의를 개최하며 DMB 표준화 업무를 수행해 오고 있다

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Development of a Portable Transmission System for Verifying AT-DMB Services (AT-DMB 서비스 검증을 위한 휴대용 송출 시스템의 개발)

  • Bae, Byung-Jun;Lee, Ji-Bong;Song, Yun-Jeong;Lee, Soo-In
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • pp.192-194
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    • 2010
  • AT-DMB 시스템은 계층 변조 기법을 활용하여 국내 모바일 방송 서비스로써 먼저 자리 잡은 지상파 DMB 방송과의 역호환성을 유지하면서 동일 주파수 대역에서 최대 2배의 데이터 전송율을 제공하는 것이 가능하다. 이러한 AT-DMB 서비스가 상용 방송으로써 활성화되기 위해서는 기존의 지상파 DMB와는 차별성을 가지는 AT-DMB 기반의 다양한 서비스와 상용 AT-DMB 수신기가 필요하다. 본 논문에서는 AT-DMB 방송 서비스 및 수신기의 개발을 용이하게 제공하기 위한 AT-DMB 휴대용 송출 시스템을 제안한다. 제안된 휴대용 송출 시스템은 하드웨어 및 소프트웨어로 설계 및 구현하여, 이미 검증된 AT-DMB 수신기로 구현된 기능을 검증한다. 또한 상용 지상파 DMB 수신기를 이용하여 지상파 DMB 시스템과의 역호환성을 유지하는지 확인한다.

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Performance Analysis of Scalable Video Coding between T-DMB and Advanced T-DMB on Bandwidth Allocation Method (대역폭 할당 방식에 따른 T-DMB와 AT-DMB간의 스케일러블 부호화 성능 분석)

  • Choi, Sung-Jin;Kim, Jin-Soo;Kim, Jae-Gon;Choi, Hae-Chul;Yoo, Jeong-Joo
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • pp.113-116
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    • 2007
  • T-DMB (Terrestrial-DMB) service is now available in the metropolitan area, but due to the bandwidth limitation, it is allowed to provide up to CIF resolution. As users' requests for high-quality mobile multimedia services are rapidly increasing and additional bandwidth can be provided by adopting the hierarchical modulation transmission technology, the research on the Advanced Terrestrial-DMB(AT-DMB) service using the SVC(Scalable Video Coding) scheme is being actively studied. In this paper, through computer simulations, first, while keeping the current T-DMB service unchanged, the visual qualities of AT-DMB services are investigated by varying the additional bandwidth. Then, by considering the cases that the overall bandwidth can be allowed to dynamically allocate to the T-DMB/AT-DMB video services, the performance characteristics between two layers are compared over the different kinds of video sequences.

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