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1. 发明授权

US07907594B2 Marking keyframes for a communication session 有权
标题翻译：标记通信会话的关键帧
公开(公告)号：US07907594B2
公开(公告)日：2011-03-15
申请号：US11421622
申请日：2006-06-01
申请人： Duanpei Wu , Walter R. Friedrich , Shantanu Sarkar , Steven G. Fry
发明人： Duanpei Wu , Walter R. Friedrich , Shantanu Sarkar , Steven G. Fry
IPC分类号： H04L12/28
CPC分类号： H04L12/66
摘要： Marking a keyframe of a media stream in a communication system involves one or more entry media switches in communication with one or more endpoints. An entry media switch receives a media stream from an endpoint, where the media stream comprises a sequence of packets with a keyframe. The keyframe is detected and marked with a keyframe indicator. The keyframe indicator is operable to notify a downstream device of the keyframe. An output media stream is outputted.
摘要翻译：在通信系统中标记媒体流的关键帧涉及与一个或多个端点通信的一个或多个入口媒体交换机。入口介质交换机从端点接收媒体流，其中媒体流包括具有关键帧的分组序列。检测到关键帧并用关键帧指示器标记。关键帧指示器可操作以向下游设备通知关键帧。输出输出媒体流。

2. 发明申请

US20070280194A1 Marking Keyframes For A Communication Session 有权
标题翻译：标记通信会话的关键帧
公开(公告)号：US20070280194A1
公开(公告)日：2007-12-06
申请号：US11421622
申请日：2006-06-01
申请人： Duanpei Wu , Walter R. Friedrich , Shantanu Sarkar , Steven G. Fry
发明人： Duanpei Wu , Walter R. Friedrich , Shantanu Sarkar , Steven G. Fry
IPC分类号： H04L12/28
CPC分类号： H04L12/66
摘要： Marking a keyframe of a media stream in a communication system involves one or more entry media switches in communication with one or more endpoints. An entry media switch receives a media stream from an endpoint, where the media stream comprises a sequence of packets with a keyframe. The keyframe is detected and marked with a keyframe indicator. The keyframe indicator is operable to notify a downstream device of the keyframe. An output media stream is outputted.
摘要翻译：在通信系统中标记媒体流的关键帧涉及与一个或多个端点通信的一个或多个入口媒体交换机。入口介质交换机从端点接收媒体流，其中媒体流包括具有关键帧的分组序列。检测到关键帧并用关键帧指示器标记。关键帧指示器可操作以向下游设备通知关键帧。输出输出媒体流。

3. 发明授权

US07477282B2 System and method for performing distributed video conferencing 有权
标题翻译：用于执行分布式视频会议的系统和方法
公开(公告)号：US07477282B2
公开(公告)日：2009-01-13
申请号：US11180826
申请日：2005-07-12
申请人： Scott S. Firestone , Walter R. Friedrich , Nermin M. Ismail , Keith A. Lantz , Shantanu Sarkar , Luke K. Surazski , Duanpei Wu
发明人： Scott S. Firestone , Walter R. Friedrich , Nermin M. Ismail , Keith A. Lantz , Shantanu Sarkar , Luke K. Surazski , Duanpei Wu
IPC分类号： H04N7/14 , H04M3/42
CPC分类号： H04L65/605 , H04L12/1822 , H04L65/4046 , H04M3/567 , H04N7/15 , H04N7/152
摘要： 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.
摘要翻译：提供一种用于执行视频会议的方法，其包括从一个或多个端点接收与视频会议相关联的一个或多个音频流，并且确定与所述终点中的一个相关联的活动扬声器。可以在一个或多个媒体交换机处接收与主动扬声器相关联的音频信息。除了与活动扬声器相关联的所选视频流之外，可以抑制一个或多个视频流，所选择的视频流在视频会议期间传播到一个或多个媒体交换机。可以复制所选择的视频流，使得其可以被传送到与所选择的一个媒体交换机相关联的一个或多个终点。

4. 发明授权

US08576272B2 Method and apparatus for using far end camera control (FECC) messages to implement participant and layout selection in a multipoint videoconference 有权
标题翻译：在多点视频会议中使用远端相机控制（FECC）消息来实现参与者和布局选择的方法和装置
公开(公告)号：US08576272B2
公开(公告)日：2013-11-05
申请号：US13102332
申请日：2011-05-06
申请人： Duanpei Wu , Nermin M. Ismail , Shantanu Sarkar , Walter R. Friedrich
发明人： Duanpei Wu , Nermin M. Ismail , Shantanu Sarkar , Walter R. Friedrich
IPC分类号： H04N7/14
CPC分类号： H04N7/152
摘要： A method, an apparatus and a medium encoded with instructions for providing layout selection, participant selection, and/or participant-to-participant far end camera control of the selected participant for use in a continuous presence multipoint videoconference. The method includes receiving one or more far end camera control messages over a packet network from a first participant of a multipoint videoconference; maintaining an indication of a far end camera control mode for the first participant, the mode being one of a set of modes; and depending on the far end camera control mode and on controls possible, carrying out a control according to one ore more the camera control messages.
摘要翻译：一种编码有指令的方法，装置和介质，所述指令用于提供所选参与者的布局选择，参与者选择和/或参与者至参与者远端相机控制，以用于连续存在多点视频会议。该方法包括从多点视频会议的第一参与者通过分组网络接收一个或多个远端相机控制消息; 保持第一参与者的远端相机控制模式的指示，该模式是一组模式之一; 并且根据远端摄像机控制模式和可控的控制方式，根据摄像机控制消息一次进行控制。

5. 发明授权

US07940294B2 Method and apparatus for using far end camera control (FECC) messages to implement participant and layout selection in a multipoint videoconference 有权
标题翻译：在多点视频会议中使用远端相机控制（FECC）消息来实现参与者和布局选择的方法和装置
公开(公告)号：US07940294B2
公开(公告)日：2011-05-10
申请号：US11948031
申请日：2007-11-30
申请人： Duanpei Wu , Nermin M. Ismail , Shantanu Sarkar , Walter R. Friedrich
发明人： Duanpei Wu , Nermin M. Ismail , Shantanu Sarkar , Walter R. Friedrich
IPC分类号： H04N7/14
CPC分类号： H04N7/152
摘要： A method, an apparatus and a medium encoded with instructions for providing layout selection, participant selection, and/or participant-to-participant far end camera control of the selected participant for use in a continuous presence multipoint videoconference. The method includes receiving one or more far end camera control messages over a packet network from a first participant of a multipoint videoconference; maintaining an indication of a far end camera control mode for the first participant, the mode being one of a set of modes; and depending on the far end camera control mode and on controls possible, carrying out a control according to one ore more the camera control messages.
摘要翻译：一种编码有指令的方法，装置和介质，所述指令用于提供所选参与者的布局选择，参与者选择和/或参与者至参与者远端相机控制，以用于连续存在多点视频会议。该方法包括从多点视频会议的第一参与者通过分组网络接收一个或多个远端相机控制消息; 保持第一参与者的远端相机控制模式的指示，该模式是一组模式之一; 并且根据远端摄像机控制模式和可控的控制方式，根据摄像机控制消息一次进行控制。

6. 发明授权

US07321384B1 Method and apparatus for using far end camera control (FECC) messages to implement participant and layout selection in a multipoint videoconference 有权
标题翻译：在多点视频会议中使用远端相机控制（FECC）消息来实现参与者和布局选择的方法和装置
公开(公告)号：US07321384B1
公开(公告)日：2008-01-22
申请号：US10453341
申请日：2003-06-03
申请人： Duanpei Wu , Nermin M. Ismail , Shantanu Sarkar , Walter R. Friedrich
发明人： Duanpei Wu , Nermin M. Ismail , Shantanu Sarkar , Walter R. Friedrich
IPC分类号： H04N7/14
CPC分类号： H04N7/152
摘要： A method and an apparatus for providing layout selection, participant selection, and/or participant-to-participant far end camera control of the selected participant for use in a continuous presence multipoint videoconference. The method includes receiving an FECC message of a set of FECC messages over a packet network from a first participant, the first participant having a set of FEEC modes and being in one of the FECC modes. The method further includes maintaining knowledge of the mode of the first participant and interpreting the received FECC message according to the FECC mode of the first participant. Depending on the FECC mode of the first participant, the interpreted FECC message, and the set of controls provided by the method (layout selection and/or participant selection to select a participant and/or participant-to-participant camera control), the method further includes one of changing the FECC mode of the first participant, forming a layout for the first participant, selecting a participant for the first participant, or carrying out participant-to-participant camera control of a previously selected participant.
摘要翻译：一种用于提供选择的参与者的布局选择，参与者选择和/或参与者至参与者远端相机控制以用于连续存在多点视频会议的方法和装置。该方法包括从第一参与者经由分组网络接收一组FECC消息的FECC消息，第一参与者具有一组FEEC模式并且处于FECC模式之一。该方法还包括维护第一参与者的模式的知识，并根据第一参与者的FECC模式解释所接收的FECC消息。根据第一参与者的FECC模式，所解释的FECC消息以及由该方法（布局选择和/或选择参与者和/或参与者至参与者相机控制的参与者选择）提供的一组控制，该方法还包括改变第一参与者的FECC模式，形成第一参与者的布局，选择第一参与者的参与者，或执行先前选择的参与者的参与者到参与者相机控制。

7. 发明授权

US08659636B2 System and method for performing distributed video conferencing 有权
标题翻译：用于执行分布式视频会议的系统和方法
公开(公告)号：US08659636B2
公开(公告)日：2014-02-25
申请号：US10680918
申请日：2003-10-08
申请人： Scott S. Firestone , Walter R. Friedrich , Nermin M. Ismail , Keith A. Lantz , Shantanu Sarkar , Luke K. Surazski , Duanpei Wu
发明人： Scott S. Firestone , Walter R. Friedrich , Nermin M. Ismail , Keith A. Lantz , Shantanu Sarkar , Luke K. Surazski , Duanpei Wu
IPC分类号： H04N7/14
CPC分类号： H04N7/14 , H04L12/1822 , H04L65/4046 , H04L65/605 , H04M3/567 , H04M2207/20 , H04N7/15
摘要： 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.
摘要翻译：提供一种用于执行视频会议的方法，其包括从一个或多个端点接收与视频会议相关联的一个或多个音频流，并且确定与所述终点中的一个相关联的活动扬声器。可以在一个或多个媒体交换机处接收与主动扬声器相关联的音频信息。除了与活动扬声器相关联的所选视频流之外，可以抑制一个或多个视频流，所选择的视频流在视频会议期间传播到一个或多个媒体交换机。可以复制所选择的视频流，使得其可以被传送到与所选择的一个媒体交换机相关联的一个或多个终点。

8. 发明申请

US20110205333A1 METHOD AND APPARATUS FOR USING FAR END CAMERA CONTROL (FECC) MESSAGES TO IMPLEMENT PARTICIPANT AND LAYOUT SELECTION IN A MULTIPOINT VIDEOCONFERENCE 有权
标题翻译：使用终端相机控制（FECC）消息在多点视频中实现参与者和布局选择的方法和装置
公开(公告)号：US20110205333A1
公开(公告)日：2011-08-25
申请号：US13102332
申请日：2011-05-06
申请人： Duanpei Wu , Nermin M. Ismail , Shantanu Sarkar , Walter R. Friedrich
发明人： Duanpei Wu , Nermin M. Ismail , Shantanu Sarkar , Walter R. Friedrich
IPC分类号： H04N7/14
CPC分类号： H04N7/152
摘要： A method, an apparatus and a medium encoded with instructions for providing layout selection, participant selection, and/or participant-to-participant far end camera control of the selected participant for use in a continuous presence multipoint videoconference. The method includes receiving one or more far end camera control messages over a packet network from a first participant of a multipoint videoconference; maintaining an indication of a far end camera control mode for the first participant, the mode being one of a set of modes; and depending on the far end camera control mode and on controls possible, carrying out a control according to one ore more the camera control messages.
摘要翻译：一种编码有指令的方法，装置和介质，所述指令用于提供所选参与者的布局选择，参与者选择和/或参与者至参与者远端相机控制，以用于连续存在多点视频会议。该方法包括从多点视频会议的第一参与者通过分组网络接收一个或多个远端相机控制消息; 保持第一参与者的远端相机控制模式的指示，该模式是一组模式之一; 并且根据远端摄像机控制模式和可控的控制方式，根据摄像机控制消息一次进行控制。

9. 发明授权

US07084898B1 System and method for providing video conferencing synchronization 有权
标题翻译：用于提供视频会议同步的系统和方法
公开(公告)号：US07084898B1
公开(公告)日：2006-08-01
申请号：US10715687
申请日：2003-11-18
申请人： Scott S. Firestone , Walter R. Friedrich , Nermin M. Ismail , Keith A. Lantz , Shantanu Sarkar , Luke K. Surazski , Duanpei Wu
发明人： Scott S. Firestone , Walter R. Friedrich , Nermin M. Ismail , Keith A. Lantz , Shantanu Sarkar , Luke K. Surazski , Duanpei Wu
IPC分类号： H04N7/14
CPC分类号： H04N7/152
摘要： An audio mixer on a first device receives one or more incoming audio streams. Each of the one or more incoming audio streams has an associated timestamp. The audio mixer generates a mixed audio stream from the one or more incoming audio streams. The audio mixer determines differences in the time base of each of the one or more incoming audio streams and the time base for the mixed audio stream. The audio mixer generates mapping parameters associated with the determined differences and transforms the timestamp of each of the one or more incoming audio streams to a corresponding output timestamp associated with the mixed audio stream according to the mapping parameters. the mapping parameters are provided to a video mixer for similar processing and transformation such that the mixed audio stream is in synchronization with a mixed video stream.
摘要翻译：第一设备上的音频混合器接收一个或多个输入音频流。一个或多个输入音频流中的每一个具有关联的时间戳。音频混合器从一个或多个输入音频流产生混合音频流。音频混合器确定一个或多个输入音频流中的每一个的时基和混合音频流的时基的差异。音频混合器产生与确定的差异相关联的映射参数，并且根据映射参数将一个或多个输入音频流中的每一个的时间戳转换为与混合音频流相关联的对应输出时间戳。将映射参数提供给用于类似处理和变换的视频混合器，使得混合音频流与混合视频流同步。

10. 发明授权

US06989856B2 System and method for performing distributed video conferencing 有权
公开(公告)号：US06989856B2
公开(公告)日：2006-01-24
申请号：US10703859
申请日：2003-11-06
申请人： Scott S. Firestone , Walter R. Friedrich , Nermin M. Ismail , Keith A. Lantz , Shantanu Sarkar , Luke K. Surazski , Duanpei Wu
发明人： Scott S. Firestone , Walter R. Friedrich , Nermin M. Ismail , Keith A. Lantz , Shantanu Sarkar , Luke K. Surazski , Duanpei Wu
IPC分类号： H04N7/14
CPC分类号： H04N7/14 , H04L12/1822 , H04L65/4046 , H04L65/605 , H04M3/567 , H04M2207/20 , H04N7/15
摘要： 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.

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