发明公开
- 专利标题： Video service system
- 专利标题（中）： Videodienstsystem
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申请号： EP99103115.4申请日： 1999-02-17
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公开(公告)号： EP0939545A2公开(公告)日： 1999-09-01
- 发明人: Suzuki, Toshiaki , Yoshizawa, Satoshi c/o Hitachi America Ltd. , Mimura, Itaru , Ikezawa, Mitsuru , Kameyama, Tatsuya
- 申请人： Hitachi, Ltd.
- 申请人地址： 6, Kanda Surugadai 4-chome Chiyoda-ku, Tokyo 101-8010 JP
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： 6, Kanda Surugadai 4-chome Chiyoda-ku, Tokyo 101-8010 JP
- 代理机构： Strehl Schübel-Hopf & Partner
- 优先权： JP4673698 19980227
- 主分类号： H04N5/00
- IPC分类号： H04N5/00
摘要：
A video server encapsulates video program data, encoded by the scalable coding method, into packets, assigns a flag to the packet for each layer and transmits the packet to a video quality control equipment (20) existing on an edge of a network branching to client terminals (11 and 12). The video quality control equipment (20) duplicates and converts video program data, encoded by the scalable coding method, according to quality modes demanded from the client terminals (11 and 12), and serves the video program data thus duplicated and converted to the respective client terminals (11 and 12).
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