• Title/Summary/Keyword: Multimedia Utilization

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The Efficient Utilization of the Image Recognition System using CAN Communications in the Ship (선박 내에서의 CAN 통신을 활용한 영상 인식 시스템의 효율적 활용 방안)

  • Hong, Sung-Hwa;Lee, Seong-Real
    • Journal of Advanced Navigation Technology
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    • v.23 no.5
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    • pp.367-372
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    • 2019
  • With the development of various IT technologies, data generated in the ship can be controlled through CAN communication, autonomous operation, and information provision in various situation. In addition, electronic navigation vessels with various functions have emerged, and navigation and communication equipment used in these vessels are mainly following the NMEA standard. Currently, NMEA-0183 is still mainly used, but more efficient multimedia transmission processing method is needed for multimedia transmission and USN equipment compatible using NMEA-2000 standard. Furthermore, Ethernet-based ship control is required. However, this paper proposes a multimedia transmission scheme to be smoothly linked with existing ship devices by utilizing CAN communication that can be easily used in the ship.

Analysis on the Teachers' Utilization Levels of Smart Devices for Their Improvement (스마트기기에 대한 교사의 활용 수준과 개선 사항에 대한 실태 분석)

  • Kim, Chongwoo
    • Journal of The Korean Association of Information Education
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    • v.18 no.4
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    • pp.483-490
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    • 2014
  • Smart classrooms have been set up nationwide to utilize smart devices for teaching and learning in the knowledge- based society, As this trend might quickly spread, we have investigated the utilization levels, and issues around the facilities from the experienced teachers. In order to study the impact of easy access to smart devices, the teacher sampling groups were divided into two: one teacher group responsible for smart classrooms and the other group teaching in ordinary classrooms. Survey questions dealt with teacher needs analyses, their expectation of their students' attitude changes, their satisfaction and utilization levels of smart devices currently built in classrooms. The results showed us that teachers have vague expectation about the smart devices and want more highly applicable devices for instruction, improvement of their compatibility with other multimedia devices or applications as well as to improve the resolution of electronic boards. and basic functions of information search and videos that they use everyday.

A Study on the Conceptual Modeling and Implementation of a Semantic Search System (시맨틱 검색 시스템의 개념적 모형화와 그 구현에 대한 연구)

  • Hana, Dong-Il;Kwonb, Hyeong-In;Chong, Hak-Jin
    • Journal of Intelligence and Information Systems
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    • v.14 no.1
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    • pp.67-84
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    • 2008
  • This paper proposes a design and realization for the semantic search system. The proposed model includes three Architecture Layers of a Semantic Search System ; (they are conceptually named as) the Knowledge Acquisition, the Knowledge Representation and the Knowledge Utilization. Each of these three Layers are designed to interactively work together, so as to maximize the users' information needs. The Knowledge Acquisition Layer includes index and storage of Semantic Metadata from various source of web contents(eg : text, image, multimedia and so on). The Knowledge Representation Layer includes the ontology schema and instance, through the process of semantic search by ontology based query expansion. Finally, the Knowledge Utilization Layer includes the users to search query intuitively, and get its results without the users'knowledge of semantic web language or ontology. So far as the design and the realization of the semantic search site is concerned, the proposedsemantic search system will offer useful implications to the researchers and practitioners so as to improve the research level to the commercial use.

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A Novel Rate Control for Improving the QoE of Multimedia Streaming Service in the Internet Congestion (인터넷 혼잡상황에서 멀티미디어 스트리밍 서비스의 QoE 향상을 위한 전송률 제어기법)

  • Koo, Ja-Hon;Chung, Kwang-Sue
    • Journal of KIISE:Information Networking
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    • v.36 no.6
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    • pp.492-504
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    • 2009
  • The delivery of multimedia that efficiently adapts its bit-rate to changing network characteristics and conditions is one of the important challenging tasks in the design of today's real-time multimedia streaming systems such as IPTV, Mobile IPTV and so on. In these work, the primary focus is on network congestion, to improve network stability and inter-protocol fairness. However, these existing works have problems which do not support QoE (Quality of Experience), because they did not consider essential characteristics of contents playback such as the media continuity. In this paper, we propose a novel rate control scheme for improving the QoE of multimedia streaming service in the Internet congestion, called NCAR (Network and Client-Aware Rate control), which is based on network-aware congestion control and client-aware flow control scheme. Network-aware congestion control of the NCAR offers an improving reliability and fairness of multimedia streaming, and reduces the rate oscillation as well as keeping high link utilization. Client-aware flow control of NCAR offers a removing the media discontinuity and a suitable receiver buffer allocation, and provides a good combination of low playback delay. Simulation results demonstrate the effectiveness of our proposed schemes.

The QoS Filtering and Scalable Transmission Scheme of MPEG Data to Adapt Network Bandwidth Variation (통신망 대역폭 변화에 적응하는 MPEG 데이터의 QoS 필터링 기법과 스케일러블 전송 기법)

  • 유우종;김두현;유관종
    • Journal of Korea Multimedia Society
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    • v.3 no.5
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    • pp.479-494
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    • 2000
  • Although the proliferation of real-time multimedia services over the Internet might indicate its successfulness in dealing with heterogeneous environments, it is obvious, on the other hand, that the internet now has to cope with a flood of multimedia data which consumes most of network communication channels due to a great deal of video or audio streams. Therefore, for the purpose of an efficient and appropriate utilization of network resources, it requires to develop and deploy a new scalable transmission technique n consideration of respective network environment and individual clients computing power. Also, we can eliminate the waste effects of storage device and data transmission overhead in that the same video stream duplicated according to QoS. The purpose of this paper is to develop a technology that can adjust the amount of data transmitted as an MPEG video stream according to its given communication bandwidth, and technique that can reflect dynamic bandwidth while playing a video stream. For this purpose, we introduce a media scalable media decomposer working on server side, and a scalable media composer working o n a client side, and then propose a scalable transmission method and a media sender and a media receiver in consideration of dynamic QoS. Those methods proposed her can facilitate an effective use of network resources, and provide multimedia MPEG video services in real-time with respect to individual client computing environment.

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A Study on the Construction and Improvement of Electronic Disaster Map by Each Local Self-Government (지방자치별 전자재해지도 구축현황 및 개선방안 연구)

  • Koo, Min-Seok;Kang, Hyeon-Young;Kim, Sung-Je;Kim, Chang-Soo
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2012.05a
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    • pp.831-832
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    • 2012
  • In this paper, we survey problems and implementation states of electronic disaster map which is made each local self-government as a unit. If many local self-governments establish and service a electronic disaster map, they only provide simple functions and low utilization ratio. We know the these causes and research for improving methods.

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Performance Analysis of Dynamic Spectrum Allocation in Heterogeneous Wireless Networks

  • Ha, Jeoung-Lak;Kim, Jin-Up;Kim, Sang-Ha
    • ETRI Journal
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    • v.32 no.2
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    • pp.292-301
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    • 2010
  • Increasing convergence among heterogeneous radio networks is expected to be a key feature of future ubiquitous services. The convergence of radio networks in combination with dynamic spectrum allocation (DSA) could be a beneficial means to solve the growing demand for radio spectrum. DSA might enhance the spectrum utilization of involved radio networks to comply with user requirements for high-quality multimedia services. This paper proposes a simple spectrum allocation algorithm and presents an analytical model of dynamic spectrum resource allocation between two networks using a 4-D Markov chain. We argue that there may exist a break-even point for choosing whether or not to adopt DSA in a system. We point out certain circumstances where DSA is not a viable alternative. We also discuss the performance of DSA against the degree of resource sharing using the proposed analytical model and simulations. The presented analytical model is not restricted to DSA, and can be applied to a general resource sharing study.

A Study on data transmission protocol with directional in Wireless Sensor Network (무선 센서 네트워크에서 방향성을 가진 데이터 전달 프로토콜에 관한 연구)

  • Kim, Tae-Hwan;Nam, Gu-Tae;Oh, Sei-Woong
    • Proceedings of the Korea Contents Association Conference
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    • 2004.11a
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    • pp.296-301
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    • 2004
  • The Wireless Sensor Network is technology that makes possible utilize the information collected from rescue, the agricultural and livestock management system, and the home automation system by using an ultra-small sized, ultra-lightweight sensor module. This study proposes the routing protocol with directional nature that can improve the utilization by higher energy efficiency and reliability than those of existing studies on data transmission, and we also analyze the current studies, make a comparison of them in performance.

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A Study of Public Test-bed Operation for Satellite Communications via COMS (천리안 위성을 활용한 위성 통신용 공공 테스트베드 운용에 관한 연구)

  • Wang, Do-Huy;Oh, Deock-Gil
    • Journal of Satellite, Information and Communications
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    • v.8 no.4
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    • pp.12-16
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    • 2013
  • This paper we introduce operated public test-bed satellite system configuration for satellite communications and usage for services via COMS(Communication, Ocean and Meteorological Satellite). According to trial public test-bed operation, the broadband multimedia services are expected to be available at the next generation VSAT services due to the increasing of Ka-band utilization. In addition, UHD broadcasting services via satellite is expected to improve the universal accessibility of broadcast services.

A Hierarchical MAC Protocol for QoS Support in Wireless Wearable Computer Systems

  • Hur, Kyeong
    • Journal of information and communication convergence engineering
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    • v.12 no.1
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    • pp.14-18
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    • 2014
  • A recent major development in computer technology is the advent of wearable computer systems. Wearable computer systems employ a wireless universal serial bus (WUSB), which refers to a combination of USB with the WiMedia wireless technical specifications. In this study, we focus on an integrated system of WUSB over wireless body area networks (WBANs) for wireless wearable computer systems. However, current WBAN MACs do not have well-defined quality of service (QoS) mapping and resource allocation mechanisms to support multimedia streams with the requested QoS parameters. To solve this problem, we propose a novel QoS-aware time slot allocation method. The proposed method provides fair and adaptive QoS provisioning to isochronous streams according to current traffic loads and their requested QoS parameters by executing a QoS satisfaction algorithm at the WUSB/WBAN host. The simulation results show that the proposed method improves the efficiency of time slot utilization while maximizing QoS provisioning.