• Title/Summary/Keyword: Wired Wireless Internet

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Design of Gateway for In-vehicle Sensor Network

  • Kim, Tae-Hwan;Lee, Seung-Il;Hong, Won-Kee
    • Proceedings of the Korea Society of Information Technology Applications Conference
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    • 2005.11a
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    • pp.73-76
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    • 2005
  • The advanced information and communication technology gives vehicles another role of the third digital space, merging a physical space with a virtual space in a ubiquitous society. In the ubiquitous environment, the vehicle becomes a sensor node, which has a computing and communication capability in the digital space of wired and wireless network. An intelligent vehicle information system with a remote control and diagnosis is one of the future vehicle systems that we can expect in the ubiquitous environment. However, for the intelligent vehicle system, many issues such as vehicle mobility, in-vehicle communication, service platform and network convergence should be resolved. In this paper, an in-vehicle gateway is presented for an intelligent vehicle information system to make an access to heterogeneous networks. It gives an access to the server systems on the internet via CDMA-based hierarchical module architecture. Some experiments was made to find out how long it takes to communicate between a vehicle's intelligent information system and an external server in the various environment. The results show that the average response time amounts to 776ms at fixec place, 707ms at rural area and 910ms at urban area.

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Development of Adaptive Streaming Systems for Hybrid TV Service (하이브리드TV서비스를 위한 적응형 스트리밍 시스템 개발)

  • Choi, Seungcheol;Kim, Yunhyoung;Lee, Man-Kyu;Choi, Seokrim
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.39B no.7
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    • pp.467-476
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    • 2014
  • Recently, various services which use the fused form of broadcasting and communication are being offered over the Internet globally. To provide various interactive services through connected smart TV on wired or wireless network, the seamless multimedia service is key feature. In this paper, Dynamic Adaptive Streaming over HTTP (DASH)is adopted to develop cost-effective adaptive streaming system for Open Hybrid TV(OHTV) service. This system can provide seamless adaptive streaming service for IP VOD, Video Clips, Ad insertion which are defined in OHTV.

A Study on Voice Communication Quality Criteria Under Mobile-VoIP Environments

  • Choi, Jae-Hun;Seol, Soon-Uk;Chang, Joon-Hyuk
    • The Journal of the Acoustical Society of Korea
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    • v.28 no.2E
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    • pp.35-42
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    • 2009
  • In this paper, we present criteria of objective measurement of speech quality to provide the mobile-VoIP services efficiently over wireless mobile internet. The mobile-VoIP service, which is based on mobility and is error-prone compared to conventional VoIP over wired network, is about to be launched, but there have not been adequate quality indexes and the Quality of Service (QoS) standards for evaluating speech quality of Mobile-VoIP. In addition, there are many factors influencing on the speech quality in packet network of which packet loss contribute directly to the overall voice communication quality. For this reason, we adopt the Gilbert-Elliot Channel Model for modeling packet network based on IP and assess the voice quality through the objective speech method of ITU-T P. 862 PESQ and ITU-T P. 862.1 MOS-LQO under various packet loss rates in the transmission channel environments. Our simulation results address the specific criteria and QoS for the mobile-VoIP services in terms of the various packet loss environments.

The Pattern Search and Complete Elimination Method of Important Private Data in PC (PC에서 중요개인정보의 패턴 검색과 완전삭제방법 연구)

  • Seo, Mi-Suk;Park, Dea-Woo
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2013.05a
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    • pp.213-216
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    • 2013
  • Big data, the use of privacy has been increasing to the development of wireless network infrastructure or technology development and wired Internet. By the way, Enforcement of private data preservation law the infringement accident which is still caused by despite with private data outflow occurs. The private data outflow avoids finance and to become the fire tube. Analyzes the pattern of private data from search of private data and detection process and the research which it extracts and the research is necessary in about perfection elimination of the private data which is unnecessary. From the research which it sees it researched a pattern extraction research and a complete elimination method in about private data protection and it did the pattern extraction and a complete elimination experiment of private data.

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A Design and Security of One Card System using Smart Card (스마트카드를 이용한 원카드 시스템의 설계 및 보안)

  • Lee, Dae-Sik;Yun, Dong-Sic;Ahn, Heui-Hak
    • Convergence Security Journal
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    • v.5 no.2
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    • pp.57-63
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    • 2005
  • According to rapid development of computer and wired-wireless internet, information exchange of networking is growing. Also according as size of industry related e-commerce is bigger, it is Required the necessity of convenient user authentication system. So, the study of new authentication method to have a security and convenience is progressing systematically. Smart card of new authentication method overcome problem of established scheme. So it prospect that will be replaced One Card to have a high security and multi-function. In this papar, we suggest about the implementation of One Card System that the security of smart card and usable in all fields.

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A Study of the Analysis and Countermeasure about the Phishing Scam (피싱에 대한 분석 및 대응방안에 대한 연구)

  • Kang, Hyun Joong
    • Convergence Security Journal
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    • v.14 no.5
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    • pp.65-74
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    • 2014
  • Phishing scans through wired telephones have been evolving into smissing and pharming. While we use wire or wireless telephones, text messages, e-mails, and online-banking conveniently, the ways of hacking and phishing attacks are getting developed and various. This paper investigates the various aspects of attacks depending on the kinds of phishing and suggests general prevention measures. In addition, the user-oriented practical preventive measures and government-driven long term measures are proposed in this paper. Technological developments, short or long term preventive measures proposed by the government, and continuous public relations could be solutions since in a short time, it could be difficult to eradicate phishing scams evolving continuously. Besides, the internet media as well as SNS are great helps in promoting the preventives against phishing and smissing. Finally this paper asserts that the newly developed service technology should be made carefully without security problems.

A Study on the Development of a Gateway where energy efficiency network based on Internet of Things (에너지 정보 수집을 위한 IoT 기반 통합게이트웨이 개발에 관한 연구)

  • Kim, Beom-Joo;Han, Jeong-Hoon;Kim, Yong-Bae;Kim, Dae-Hwan
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2018.10a
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    • pp.265-267
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    • 2018
  • This paper addresses the study of wired and wireless gateway with IoT Standard. The gateway that we develop through this study is designed to be utilized for collection energy information among various serveces. It is aimed at the role as an Advanced Metering Infrastructure which is a core infrastructure for Smargrid services. To this end, the gateway has a structure that can apply the IoT standard and the network technology used in the Smartgrid. These gateway can be applied with small and medium energy consumer that require energy information collection.

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Gesture based Natural User Interface for e-Training

  • Lim, C.J.;Lee, Nam-Hee;Jeong, Yun-Guen;Heo, Seung-Il
    • Journal of the Ergonomics Society of Korea
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    • v.31 no.4
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    • pp.577-583
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    • 2012
  • Objective: This paper describes the process and results related to the development of gesture recognition-based natural user interface(NUI) for vehicle maintenance e-Training system. Background: E-Training refers to education training that acquires and improves the necessary capabilities to perform tasks by using information and communication technology(simulation, 3D virtual reality, and augmented reality), device(PC, tablet, smartphone, and HMD), and environment(wired/wireless internet and cloud computing). Method: Palm movement from depth camera is used as a pointing device, where finger movement is extracted by using OpenCV library as a selection protocol. Results: The proposed NUI allows trainees to control objects, such as cars and engines, on a large screen through gesture recognition. In addition, it includes the learning environment to understand the procedure of either assemble or disassemble certain parts. Conclusion: Future works are related to the implementation of gesture recognition technology for a multiple number of trainees. Application: The results of this interface can be applied not only in e-Training system, but also in other systems, such as digital signage, tangible game, controlling 3D contents, etc.

A Ubiquitous Interface System for Mobile Robot Control in Indoor Environment (실내 환경에서의 이동로봇 제어를 위한 유비쿼터스 인터페이스 시스템)

  • Ahn Hyunsik;Song Jae-Sung
    • Journal of Institute of Control, Robotics and Systems
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    • v.12 no.1
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    • pp.66-71
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    • 2006
  • Recently, there are lots of concerning on ubiquitous environment of robots and URC (Ubiquitous Robotic Companion). In this paper, a practical ubiquitous interface system far controlling mobile robots in indoor environments was proposed. The interface system was designed as a manager-agent model including a PC manager, a mobile manager, and robot agents for being able to be accessed by any network. In the system, the PC manager has a 3D virtual environment and shows real images for a human-friendly interface, and share the computation load of the robot such as path planning and managing geographical information. It also contains Hybrid Format Manager(HFM) working for transforming the image, position, and control data and interchanging them between the robots and the managers. Mobile manager working in the minimized computing condition of handsets has a mobile interface environment displaying the real images and the position of the robot and being able to control the robots by pressing keys. Experimental results showed the proposed system was able to control robots rising wired and wireless LAN and mobile Internet.

Implementation of the XML Parser for Integrated XML Web Service in Wired and Wireless Internet Environment (유.무선 인터넷 환경에서 XML 웹서비스를 위한 통합 XML Parser 구현)

  • Kwon, Doo-Wy;Do, Kyeong-Hoon
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.14 no.2
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    • pp.493-500
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    • 2010
  • XML Web Service is a new distributed computing paradigm for combining all computer systems through the on-line standardized open network, so it is expected that companies can get the results of increasing profits and reducing costs through this. Especially XML Web Service is essential in mobile environment. In this paper, a new XML Web Service is proposed and it is based on WIPI-based XML standard technology and mobile web service standard. The proposed XML Web Service embodied XML Parser which can be used in WIPI environment and made HTTP communication. In addition, as an example of the practical application, it was applied to an inventory Management, Book Store using JAVA language for WIPI.