2つのDVマルチキャストストリームを用いた多地点ビデオ会議システムの提案  [in Japanese] A Proposal of Multi-site Videoconferencing System Using Two DV Multicast Streams  [in Japanese]

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Author(s)

Abstract

DV over IPによる多地点ビデオ会議用中継方式について述べている.従来の中継器では,各地点の様子を同時にモニタするために画面の分割合成を行うことが多いが,中継回線の容量が大きいことが前提となる.一方提案方式は発言している人の映像のみを中継するため所要回線容量は小さくてもよい(平均30Mbps,最大60Mbps)という特長がある.しかし,発言者つまり自分の顔を見ながらしやべる必要があった.その対策として本稿では,所要回線容量は小さいままで2つのDVストリームをマルチキャストする方式を提案している.

The relay systems for multi-site video conferencing by DV over IP are described. Although a monitor screen has been divided into multi-portions in order to watch the circumstances of remote places for the conventional systems, the required network bandwidth for the relay has been assumed to be large. On the other hand, the proposing system has the feature that the required bandwidth is small (its average is 30Mbps, and the maximum is 60Mbps) since only the video of those who have spoken is transmitted. However, they had to talk while looking at their own faces. To solve the problem, a system using two DV multicast streams is proposed in this paper, while the required bandwidth is still small.

Journal

  • IEICE technical report

    IEICE technical report 106(465), 67-72, 2007-01-11

    The Institute of Electronics, Information and Communication Engineers

References:  4

Codes

  • NII Article ID (NAID)
    110006201523
  • NII NACSIS-CAT ID (NCID)
    AA11553608
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    09135685
  • NDL Article ID
    8639797
  • NDL Source Classification
    ZN33(科学技術--電気工学・電気機械工業--電子工学・電気通信)
  • NDL Call No.
    Z16-940
  • Data Source
    CJP  NDL  NII-ELS 
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