• Title, Summary, Keyword: Video Conference

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Implementation of a Video Conference Server with Additive Video-Stream (부가 영상 삽입기능을 갖는 화상회의 서버 구현)

  • 권성환;성영락;오하령
    • Proceedings of the IEEK Conference
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    • pp.101-104
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    • 2000
  • In this paper, we implement a video conference system, which connects remote PCs. Each system receives video and audio data from devices attached to a PC and compresses them by using CODECs. It sends the compressed data to the opponent. Compared to the existing ones, the proposed system can combine two video streams into a new one. Thus, additional video data can be transferred to the opponent during a call.

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Design and Implementation of Video Conference System Using Hybrid Type P2P (하이브리드형 P2P를 이용한 화상회의 시스템의 설계 및 구현)

  • Kim Hyen-Ki
    • Journal of the Korea Industrial Information Systems Research
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    • v.11 no.1
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    • pp.21-28
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    • 2006
  • This paper describes the design and implementation of video conference system using hybrid type P2P(Peer to Peer). The proposed video conference system has hybrid type P2P architecture based on a client-server and P2P(Peer to Peer), where client-server is used for exchange of account management, client list and status information and P2P is used for the real time video conference. The proposed video conference system decreases the traffic of server, and cuts down the load of a network. Because the multimedia data is decentralized to client by P2P. Also, this system is tested by the multi-party video conference system using communication protocol and application software through high speed networks.

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Security Method of Multimedia Data Characteristics on Video Conference System (영상회의 시스템에서 멀티미디어 데이터 특성에 따른 보안 방법)

  • Han, Kun-Hee
    • Journal of the Korea Society of Computer and Information
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    • v.10 no.4
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    • pp.143-148
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    • 2005
  • Video conference system it is various at internet and uses the reading is become accomplished. Research of like this portion synchronization of audio, the compression technique and multimedia data, supports the video conference the research of the Mbone of the IP multicast for being active. being become accomplished the multimedia service which is various an video from internet, the line speed of communication becomes high-speed anger and to follow leads is become accomplished. The video conference from opening elder brother dispersion internet network environment the problem against the image which is an image conference data and a voice security is serious and it raises its head. To sleep it presents the security method which from the video conference it follows in quality of multimedia data from the dissertation which it sees and it does.

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Video Conference System Construction that Apply Real Time Video Encryption Techniques (실시간 동영상 암호화 기법을 적용한 화상회의 시스템 구축)

  • 최우진;김형균;오무송
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.6 no.6
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    • pp.931-936
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    • 2002
  • By emphasize and enhance security in encryption of same viewdata in this research, constructed video conference system that apply real time video encryption techniques that confidentiality and integrity aspect are emphasized than video conference system that depend on existent user certification techniques. Sender's image transmits Vernam's encryption process to listener by packet. Listener can display image through image's decipher process and uncompress after unite receiving transmited image. This time, solved transmission speed delay problem by video's real time encryption using Vernam's algorithm that encryption and the decipher speed are fast. Simplification problem of Vernam algorithm wished to solve Session Key that use security Key that is used encipherment and decipher in channel between Client and Server using RSA algorithm.

Multimedia Data Security of Video Conferencing System (영상회의 시스템에서의 멀티미디어 데이터 보안)

  • 이원호;한군희
    • Proceedings of the Korea Contents Association Conference
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    • pp.231-236
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    • 2003
  • Video conferencing system it is various at internet and uses the reading is become accomplished. Research of like this portion synchronization of audio, the video compression technique and multimedia data, supports the video conference the research of the Mbone of the If multicast for being active, being become accomplished the multimedia service which is various an video from internet, the line speed of communication becomes high-speed anger and to follow leads is become accomplished. The video conference from opening elder brother dispersion internet network environment the problem against the image which is an image conference data and a voice security is serious and it raises its head. To sleep it presents the security method which from the video conference it follows in quality of multimedia data from the dissertation which it sees and it does.

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The Design of a CTI System for reliable video-conference (신뢰성있는 화상회의를 위한 CTI System 설계)

  • 이종열;정현우;박원배
    • Proceedings of the IEEK Conference
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    • pp.225-228
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    • 2000
  • In this paper, a design of the reliable video-conference system using CTI(Computer Telephony Integration) technology is proposed. When video-conference is run on the current existing Internet, the transmission delay problem for voice data traffic can be frequently occurred. In order to transmit the real-time voice data through the Internet efficiently, some complicated algorithms such as CODEC(Code/Decode) should be applied. It can cause further excessive processing delay which can affect the overall performance. The voice traffic is usually transmitted through the reliable PSTN(Public Switched Telephone Network) in the CTI system. In this paper a new architecture, in which PSTN for voice traffic and Internet for video traffic are used at the same time instead of using Internet by itself, is proposed to relieve the problems on a video conference.

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A Study on the Image Encryption for Video Conference System Construction that Security Improves (보안성이 향상된 화상회의 시스템 구축을 위한 영상 암호화에 관한 연구)

  • 김형균;김단환;오무송
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • pp.631-634
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    • 2002
  • Video conference system has guided swiftness of information transmission and business processing taking away time and manufacturing drug of space that is happened that long-distance gather and talk. But, leakage of important meeting content, peculation etc., in that execute video-conferences can happen. Therefore, research about video conference system of safety is progressing under secure superhigh speed information communication fetters. This treatise studied about techniques to encipher videotex to prevent variation and outward flow of burn information, peculation etc., except general encryption notation such as user certification to have drawn problem about stability of general video conference system, and is used present as countermeasure about here. Used improved Vernam's encryption techniques to encrypt videotex.

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Design and Evaluation of Data Input/output for Video Conference System (화상회의 시스템에서의 데이터 입출력 설계 및 평가)

  • 김현기
    • Journal of the Korea Industrial Information Systems Research
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    • v.8 no.2
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    • pp.38-44
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    • 2003
  • In this paper, we propose the method in which multimedia data simultaneously transfers to the main memory and the multimedia processor from the network interface card to improve bottleneck of system bus through analysis for architecture of video conference system and input/output model. The proposed method can reduce the number of system bus accesses, bus cycles, data transmission time and compression ratio of video data in the video conference system. We compared the performance between the proposed method and the conventional methods in the multi-party video conference systems. The simulation results showed that the proposed method was reduced the transmission time of multimedia data than the conventional method.

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Design and Analysis of a New Video Conference System Supporting the NAT of Firewall (방화벽 NAT를 지원하는 새로운 다자간 화상회의 시스템의 설계 및 분석)

  • Jung, Yong-Deug;Kim, Gil-Choon;Jeon, Moon-Seog
    • The Journal of Society for e-Business Studies
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    • v.9 no.4
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    • pp.137-155
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    • 2004
  • A video-conference system is being utilized in web based application services in various fields due to the widespread use of Internet and the progress of computer technologies. This system should use the public IP address for sharing file and white board and it is difficult to manage the internal network users of the firewall and non-public IP address users. In this paper, we propose an Application Level Gateway which transforms non-public IP address into public IP address. This mechanism is for the internal network users of the firewall or non-public IP address users over the Internet. We also propose a Control Daemon which manages video and audio media dynamically according to network bandwidth. This mechanism can start and terminate a video conference and manage the process of the video conference.

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