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    SYSTEM AND METHOD FOR PERFORMING DISTRIBUTED VIDEO CONFERENCING
    1.
    发明专利
    SYSTEM AND METHOD FOR PERFORMING DISTRIBUTED VIDEO CONFERENCING 未知

    公开(公告)号：CA2537944C

    公开(公告)日：2010-11-30

    申请号：CA2537944

    申请日：2004-10-06

    Applicant: CISCO TECH INC

    Inventor： FIRESTONE SCOTT S ,  FRIEDRICH WALTER R ,  ISMAIL NERMIN M ,  LANTZ KEITH A ,  SARKAR SHANTANU ,  SURAZSKI LUKE K ,  WU DUANPEI

    IPC: H04N7/14 ,  H04N7/15

    Abstract: A method for executing a video conference is provided that includes receiving one or more audio streams at (26) associated with a video conference (12) from one or more end points (12) and determining an active speaker associated with one of the end points (12). Audio information is associated with the active speaker may be received at one or more of media switches. One or more video streams may be suppressed except for a selected video stream associated with the active speaker, the selected video stream propagating to one or more of the media switches during the video conference. The selected video stream may be replicated such that it may be communicated to one or more of the end points associated with a selected one of the media switches (26).

    SYSTEM AND METHOD FOR PERFORMING DISTRIBUTED VIDEO CONFERENCING
    2.
    发明专利
    SYSTEM AND METHOD FOR PERFORMING DISTRIBUTED VIDEO CONFERENCING 未知

    公开(公告)号：CA2537944A1

    公开(公告)日：2005-04-21

    申请号：CA2537944

    申请日：2004-10-06

    Applicant: CISCO TECH INC

    Inventor： SURAZSKI LUKE K ,  ISMAIL NERMIN M ,  SARKAR SHANTANU ,  WU DUANPEI ,  FRIEDRICH WALTER R ,  LANTZ KEITH A ,  FIRESTONE SCOTT S

    IPC: H04N7/14 ,  H04N7/15

    Abstract: A method for executing a video conference is provided that includes receivin g one or more audio streams at (26) associated with a video conference (12) fr om one or more end points (12) and determining an active speaker associated wit h one of the end points (12). Audio information is associated with the active speaker may be received at one or more of media switches. One or more video streams may be suppressed except for a selected video stream associated with the active speaker, the selected video stream propagating to one or more of the media switches during the video conference. The selected video stream ma y be replicated such that it may be communicated to one or more of the end points associated with a selected one of the media switches (26).

    System and method for performing distributed video conferencing
    3.
    发明专利
    System and method for performing distributed video conferencing 未知

    公开(公告)号：AU2004306740B2

    公开(公告)日：2010-11-25

    申请号：AU2004306740

    申请日：2004-10-06

    Applicant: CISCO TECH INC

    Inventor： ISMAIL NERMIN M ,  WU DUANPEI ,  SARKAR SHANTANU ,  LANTZ KEITH A ,  SURAZSKI LUKE K ,  FRIEDRICH WALTER R ,  FIRESTONE SCOTT S

    IPC: H04N7/15

    Abstract: A method for executing a video conference is provided that includes receiving one or more audio streams associated with a video conference from one or more end points and determining an active speaker associated with one of the end points. Audio information associated with the active speaker may be received at one or more media switches. One or more video streams may be suppressed except for a selected video stream associated with the active speaker, the selected video stream propagating to one or more of the media switches during the video conference. The selected video stream may be replicated such that it may be communicated to one or more of the end points associated with a selected one of the media switches.

    AUTHENTICATING AN ENDPOINT USING A STUN SERVER
    4.
    发明申请
    AUTHENTICATING AN ENDPOINT USING A STUN SERVER 审中-公开
    使用STUN服务器验证端点

    公开(公告)号：WO2006101667A3

    公开(公告)日：2007-12-06

    申请号：PCT/US2006006669

    申请日：2006-02-24

    Applicant: CISCO TECH INC ,  FIRESTONE SCOTT S ,  JENNINGS CULLEN ,  WING DANIEL G ,  TOUITOU DAN

    Inventor： FIRESTONE SCOTT S ,  JENNINGS CULLEN ,  WING DANIEL G ,  TOUITOU DAN

    IPC: H04L9/00

    CPC classification number: H04L63/08 ,  H04L9/3271

    Abstract: Authenticating an endpoint using a STUN server includes facilitating a communication session between a first endpoint and a second endpoint over a network. A challenge request is sent to the second endpoint. The challenge request attempts to authenticate the second endpoint and includes an identification. The identification is associated with an expected response identification. A response to the challenge request is received from the second endpoint. The response has an actual response identification. The received response is verified to establish whether the second endpoint is legitimate. The second endpoint is legitimate if the actual response identification includes the expected response identification.

    Abstract translation: 使用STUN服务器认证端点包括促进通过网络的第一端点和第二端点之间的通信会话。 挑战请求被发送到第二端点。 挑战请求尝试认证第二个端点并包含一个标识。 识别与预期响应标识相关联。 从第二端点接收到对质询请求的响应。 响应具有实际的响应标识。 验证接收到的响应以确定第二端点是否合法。 如果实际的响应标识包括预期的响应标识，则第二个端点是合法的。

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