• Title/Summary/Keyword: Multimedia System

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A File System for Embedded Multimedia Systems (임베디드 멀티미디어 시스템을 위한 파일 시스템의 설계 및 구현)

  • Lee Minsuk
    • Journal of Information Technology Applications and Management
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    • v.12 no.1
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    • pp.125-140
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    • 2005
  • Nowadays, we have many embedded systems which store and process multimedia data. For multimedia systems using hard disks as storage media such as DVR, existing file systems are not the right choice to store multimedia data in terms of cost. performance and reliability. In this study we designed a reliable file system with very high performance for embedded multimedia applications. The proposed file system runs with quite simple disk layout to reduce time to initialize and to recover after power failures, uses a large data block to speed up the sequential accesses, incorporates a time-based indexing scheme to improve the time-based random accesses and boosts reliability by backing up the important meta data on a small NVRAM. We implemented the file system on a Linux-based DVR and verified the performance by comparing with existing file systems.

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Development of a Multimedia Streaming System using MEP Based on MOST150 for Premium Express Buses (MOST150기반 MEP를 이용한 프리미엄 고속버스용 멀티미디어 스트리밍 시스템 개발)

  • Lee, Jae-kyu;Lee, Sang-yub;Cho, Hyun-joong
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.42 no.5
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    • pp.1049-1057
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    • 2017
  • In-vehicle multimedia systems are one of the most important factors in the automotive industry. Especially, multimedia systems are more important in advanced commercial vehicles such as premium express buses. In this paper, we proposed a multimedia streaming system architecture using MEP(MOST Ethernet Packets) for premium express buses based on MOST150. We have designed and implemented the prototype of proposed multimedia streaming system. We have designed a board based on i.MX6 to operate a proposed multimedia streaming system. The software has designed a multimedia system for premium express buses based on Android which is an open source platform. MOST(Media Oriented Systems Transport) is a high-speed multimedia network technology for in-vehicle multimedia system. The MOST network is able to manage up to 64 devices and ring topology is used basically. In addition, the MOST Network meets EMI(Electro-Magnetic Interference)/ EMC(Electro-Magnetic Compatibility) requirements because it uses plastic optical fibers(POF).

Design and Implementation of a Manage System for CORBA-based Distrbuted Multimedia Services (CORBA 기반의 분산 멀티미디어 서비스를 위한 관리시스템의 설계와 구현)

  • Gong, Ji-Yeong;Hong, Won-Gi;Kim, Dong-Jin
    • Journal of KIISE:Computing Practices and Letters
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    • v.5 no.5
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    • pp.564-573
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    • 1999
  • Recently, as the development and use of distributed multimedia services are growing explosively in every aspects of our lives, administrators of multimedia services are very concerned with providing users with reliable and efficient services. However, the management of distributed multimedia services is a very complex and troublesome work such that a flexible but powerful management system is necessary. This paper proposes a management system for managing CORBA-based distributed multimedia services. We have developed an architecture for the management system and defined a set of management services needed to monitor and control distributed multimedia services. The architecture consists of several objects, which perform configuration management, fault management, security management and event management. A generic distributed multimedia service (DMS) MIB has been defined for the management of various multimedia services and applications. In addition, as a proof of concept, we have developed a Web-based management system for a CORBA-based distributed multimedia system called MAESTRO. The prototype management system uses OrbixWeb to interface with the management server which is implemented as a set of CORBA objects. Though our management system has been developed for distributed multimedia services, it can easily manage other CORBA-based services and applications.

A Proposal of Multimedia Retrieval System and XML Meta-data Modeling Techniques (XML 메타데이터 모델링기법과 멀티미디어 검색시스템의 제안)

  • 윤미희;조동욱
    • Proceedings of the Korea Contents Association Conference
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    • 2003.05a
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    • pp.393-398
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    • 2003
  • Video which contains the multiple data such as text, images, audio and motion of objects is typical multimedia data. Multimedia retrieval system using XML is essential for efficient rep. of multimedia data. Therefore, multimedia retrieval system for retrieval and structural understanding is needed to retrieve the multimedia data. This Paper Proposes the multimedia retrieval system based on XML Meta-data modeling techniques.

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Multimedia Resource Management System for the Realtime Data Broadcasting using T-DMB (지상파 DMB에서 실시간 데이타방송을 위한 멀티미디어 자원관리 시스템)

  • Kang, Do-Young;Yeh, Hong-Jin
    • Journal of KIISE:Computing Practices and Letters
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    • v.13 no.5
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    • pp.311-319
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    • 2007
  • Today, the data broadcasting service provides various multimedia contents to users. This paper suggests a resource management system which controls multimedia resources in order to reduce the receiving time of the contents during the realtime data broadcasting of multimedia traffic information. To verify the efficiency of the resource management system, this paper has introduced the realtime traffic information integrating and authoring systems through MOT (Multimedia Object Transfer) protocol-based BWS (Broadcast Web Site) service in which multimedia data are transmitted by T-DMB (Terrestrial Digital Multimedia Broadcasting) and implemented a resource management system which controls the creation of multimedia resources in connection with the said systems. As the receiving time of the contents created with resources from the resource management system has decreased by 1/13, they are suitable for realtime data broadcasting.

A Design of a Multi-tier Hybrid Multimedia System (다중 계층 구조의 혼합형 멀티미디어 시스템의 설계)

  • Na, Yun-Ji
    • The KIPS Transactions:PartB
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    • v.12B no.7 s.103
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    • pp.789-794
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    • 2005
  • The multimedia system using computing environment should support the fast access speed on the large scaled high quality data in the functional side. And it can support interaction and adaptiveness on system users. But it is hard to support it all effectively in the existing multimedia systems. In this paper, we design the multi-tier hybrid multimedia system. The proposed system is based on the characteristics of a multimedia medium, and it has the merits of the CD-ROM based method and the web based method. On the experiments, we verified the efficiency of the proposed system.

A design of a low power mobile multimedia system architecture (저전력 모바일 멀티미디어 시스템 구조 설계에 관한 연구)

  • Lee, Eun-Seo;Lee, Jae-Sik;Kim, Byung-Il;Chang, Tae-Gyu
    • Proceedings of the KIEE Conference
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    • 2005.10b
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    • pp.231-233
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    • 2005
  • For the low-power design of the mobile multimedia system architecture, this paper modeling the mobile multimedia system and analysis the power consumption profile about the whole communication environment. The mobile system model consist of air interface, RIP front-end, base-band processing module and human interface. For the result of power consumption profile analysis, the power consumption of multimedia processing is above 60% compare to the whole power consumption in mobile multimedia system. To minimize the power consumption in processing module which consumes the large power, this paper proposed the Microscopic DVS technique which applies the optimum voltage for the each multimedia frame. For the simulation result, proposed power minimization technique reduce the power consumption about 30%.

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Fault Tolerance System running on Distributed Multimedia (분산 멀티미디어에서의 결함 허용 시스템)

  • Hong, Sung-Ryong;Ko, Eung-Nam
    • Journal of Digital Contents Society
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    • v.16 no.1
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    • pp.123-126
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    • 2015
  • This paper described fault tolerance system running on distributed multimedia. We implemented the error manager service so that the users participated in distribute multimedia collaborative work may refer synchronized error objects as the same view to others. distributed multimedia environment are based on IP-USN(Internet Protocol - Ubiquitous Sensor Network) and M2M(Machine to machine). This is a system that is suitable for detecting, sharing and recovering software error in distribute multimedia CSCW(Computer Supportes Cooperated Work) environment. With error synchronization system, a group cooperating users can synchronize error applications.

A Study on the large scale Multimedia Security System (Large Scale Multimedia Security System 에 대한 연구)

  • 한희철;김동현;권중장
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2000.05a
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    • pp.320-324
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    • 2000
  • In this paper we propose and realize the large scale multimedia security system that one janitor control many rooms in many building on multimedia. We Study the system that one watch janitor lots of rooms and lots of buildings the same time, and store the trespasser's moving cource in Database for understanding his action pattern using computer vision technology, but the relational system cannot solve the problem that the trespasser disjoint the security system on sensing method and the system watch only one room or one building.

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Terrain editing and processing system design for construction work (건축 공사를 위한 지형 편집 및 처리 시스템 설계)

  • Gao, Rui;Hao, Shujia;Huang, Kaisi;Jin, Yong;Xi, Yulong;Chu, Phuong;Lee, Dajeong;Cho, Seoungjae;Lee, Seungsoo;Cho, Kyungeun
    • Proceedings of the Korea Information Processing Society Conference
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    • 2018.10a
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    • pp.825-826
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    • 2018
  • In this paper, we propose a terrain processing system that can display real and large terrains. The system integrates real terrain display and interaction, which makes up for the lack of interactive functions in mainstream terrain visualization software. In addition, the system provides functions such as line marking, volume calculation, and contour display.