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    Multi-point conference system
    4.
    发明授权
    Multi-point conference system 失效
    多点会议系统

    公开(公告)号：US5003532A

    公开(公告)日：1991-03-26

    申请号：US531455

    申请日：1990-05-31

    申请人： Youichi Ashida ,  Yuji Yoshida ,  Hitoshi Ishiguro ,  Hitoshi Sato ,  Hiroaki Natori

    发明人： Youichi Ashida ,  Yuji Yoshida ,  Hitoshi Ishiguro ,  Hitoshi Sato ,  Hiroaki Natori

    IPC分类号： H04N7/15

    CPC分类号： H04N7/15 ,  H04N7/152

    摘要： A multi-point conference system for making a video conference includes a center unit having a controller and an image selector, and three or more stations respectively coupled to the center unit, where each station includes at least one camera for picking up an image to output an image data, a display for displaying an image based on an image data and a request part for making a request. The controller initially sets master, sub and participating stations in conformance with a predetermined rule. The image selector automatically supplies the image data from the master station to the sub and participating stations to be displayed on the display thereof and supplies the image data from the sub station to the master station to be displayed on the display thereof. The controller automatically sets a new master station in response to a request from the request part of an arbitrary station requesting the new master station, sets the master station prior to receiving the request as a new sub station and sets all stations other than the new master and sub stations as new participating stations.

    Television conference system
    5.
    发明授权
    Television conference system 失效
    电视会议系统

    公开(公告)号：US5206721A

    公开(公告)日：1993-04-27

    申请号：US490469

    申请日：1990-03-08

    申请人： Youichi Ashida ,  Ryusaku Imai ,  Yuji Yoshida ,  Toshihiro Homma ,  Hitoshi Sato ,  Hitoshi Ishiguro ,  Hiroaki Natori ,  Masakazu Yamaguchi

    发明人： Youichi Ashida ,  Ryusaku Imai ,  Yuji Yoshida ,  Toshihiro Homma ,  Hitoshi Sato ,  Hitoshi Ishiguro ,  Hiroaki Natori ,  Masakazu Yamaguchi

    IPC分类号： H04N7/00 ,  H04N7/15

    CPC分类号： H04N7/002 ,  H04N7/15

    摘要： A television conference system having at least one of the functions of automatically directing a camera toward a speaker, of transmitting video signals of picture images from a plurality of television cameras, and of displaying a document image. The television conference system includes a microphone input judgement unit for judging the existence of any input into microphones provided for the speakers of a television conference; a judgement result holding unit for holding the results of the judgement of existence of the microphone inputs over a first predetermined period, the first predetermined period being longer than the shortest period of continuous speaking; a time totaling unit for obtaining the total time of the microphone inputs during the first predetermined period from the results of judgement held in the judgement result holding unit; a speaker specifying unit for specifying as the current speaker the speaker using a microphone having a total time obtained by the time totaling unit which is over a second predetermined period, the second predetermined period being the standard continuing period of noise; and a camera drive unit for driving a camera within a shooting range of the speaker specified as the current speaker by the speaker specifying unit.

    摘要翻译： 一种电视会议系统，其具有将照相机自动引向扬声器的功能中的至少一个，从多个电视摄像机发送图像图像的视频信号，以及显示文档图像。 电视会议系统包括麦克风输入判断单元，用于判断为电视会议的扬声器提供的麦克风的任何输入的存在; 判断结果保持单元，用于在第一预定时段内保持麦克风输入的存在判断结果，第一预定周期长于连续说话的最短时间; 时间总计单元，用于从保持在判断结果保持单元中的判断结果中获取在第一预定时段期间的麦克风输入的总时间; 扬声器指定单元，用于将具有总时间的麦克风的扬声器指定为当前扬声器，该麦克风具有超过第二预定周期的时间合计单元，第二预定周期是噪声的标准连续周期; 以及照相机驱动单元，用于通过扬声器指定单元驱动在指定为当前扬声器的扬声器的拍摄范围内的照相机。