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公开(公告)号：US07693190B2
公开(公告)日：2010-04-06
申请号：US11603849
申请日：2006-11-22
申请人： Scott Firestone , Madhavi Kadiyala , Randall B. Baird , Manjunath S. Bangalore , Shantanu Sarkar
发明人： Scott Firestone , Madhavi Kadiyala , Randall B. Baird , Manjunath S. Bangalore , Shantanu Sarkar
IPC分类号： H04J3/06
CPC分类号： H04N21/4347 , H04N5/04 , H04N5/4401 , H04N21/23406 , H04N21/23412 , H04N21/2365 , H04N21/4305 , H04N21/4307 , H04N21/4341 , H04N21/44004 , H04N21/44012 , H04N21/64723 , H04N21/8547
摘要： In one embodiment, a system includes a video mixer coupled with an audio mixer for exchange of information that includes a first set of delay values respecting input audio streams received by the audio mixer from a plurality of source endpoints, and output audio streams sent from the audio mixer to a plurality of destination endpoints. The information further including a second set of delay values respecting the corresponding input video streams. The audio mixer calculates end-to-end video delays, and the video mixer calculates end-to-end audio delays. The audio mixer delays the output audio streams to equalize the end-to-end audio and video delays in the event that the end-to-end audio delays are less than the end-to-end video delays, and the video mixer delays the output video streams to equalize the end-to-end audio and video delays in the event that the end-to-end video delays are less than the end-to-end audio delays.
摘要翻译： 在一个实施例中，系统包括与音频混合器耦合的视频混合器，用于交换信息，所述信息包括与多个源端点相关的音频混合器接收的输入音频流的第一组延迟值，以及输出从 音频混合器到多个目的地端点。 所述信息还包括相对于相应的输入视频流的第二组延迟值。 音频混合器计算端到端视频延迟，视频混合器可以计算端到端的音频延迟。 在端到端音频延迟小于端到端视频延迟的情况下，音频混合器延迟输出音频流以均衡端到端音频和视频延迟，并且视频混频器延迟 输出视频流以在终端到终端视频延迟小于端到端音频延迟的情况下均衡端对端音频和视频延迟。
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公开(公告)号：US20080117937A1
公开(公告)日：2008-05-22
申请号：US11603849
申请日：2006-11-22
申请人： Scott Firestone , Madhavi Kadiyala , Randall B. Baird , Manjunath S. Bangalore , Shantanu Sarkar
发明人： Scott Firestone , Madhavi Kadiyala , Randall B. Baird , Manjunath S. Bangalore , Shantanu Sarkar
IPC分类号： H04J3/06
CPC分类号： H04N21/4347 , H04N5/04 , H04N5/4401 , H04N21/23406 , H04N21/23412 , H04N21/2365 , H04N21/4305 , H04N21/4307 , H04N21/4341 , H04N21/44004 , H04N21/44012 , H04N21/64723 , H04N21/8547
摘要： In one embodiment, a system includes a video mixer coupled with an audio mixer for exchange of information that includes a first set of delay values respecting input audio streams received by the audio mixer from a plurality of source endpoints, and output audio streams sent from the audio mixer to a plurality of destination endpoints. The information further including a second set of delay values respecting the corresponding input video streams. The audio mixer calculates end-to-end video delays, and the video mixer calculates end-to-end audio delays. The audio mixer delays the output audio streams to equalize the end-to-end audio and video delays in the event that the end-to-end audio delays are less than the end-to-end video delays, and the video mixer delays the output video streams to equalize the end-to-end audio and video delays in the event that the end-to-end video delays are less than the end-to-end audio delays.
摘要翻译： 在一个实施例中，系统包括与音频混合器耦合的视频混合器，用于交换信息，所述信息包括与多个源端点相关的音频混合器接收的输入音频流的第一组延迟值，以及输出从 音频混合器到多个目的地端点。 所述信息还包括相对于相应的输入视频流的第二组延迟值。 音频混合器计算端到端视频延迟，视频混合器可以计算端到端的音频延迟。 在端到端音频延迟小于端到端视频延迟的情况下，音频混合器延迟输出音频流以均衡端到端音频和视频延迟，并且视频混频器延迟 输出视频流以在终端到终端视频延迟小于端到端音频延迟的情况下均衡端对端音频和视频延迟。
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公开(公告)号：US20080231687A1
公开(公告)日：2008-09-25
申请号：US11728130
申请日：2007-03-23
申请人： Randall B. Baird , Ryan Knotts , Thiyagesan Ramalingam , Manjunath S. Bangalore , Shantanu Sarkar
发明人： Randall B. Baird , Ryan Knotts , Thiyagesan Ramalingam , Manjunath S. Bangalore , Shantanu Sarkar
IPC分类号： H04N7/14
CPC分类号： H04N7/15
摘要： In one embodiment, a method includes dropping an initial series of video frames received by a video conferencing system from a first endpoint that has entered a video conference session as a first participant. One or more fast video update (FVU) messages received by the video conferencing system from the first endpoint during an enabling time period are then discarded. A single FVU message is then to the first endpoint after the video conferencing system has become enabled with respect to the first endpoint. An I-frame received from the first endpoint in response to the single FVU message is then sent back to the first endpoint. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure.
摘要翻译： 在一个实施例中，一种方法包括从已经作为第一参与者进入视频会议会话的第一端点丢弃由视频会议系统接收的初始系列视频帧。 然后，丢弃在启用时段期间由视频会议系统从第一端点接收到的一个或多个快速视频更新（FVU）消息。 在视频会议系统已经相对于第一端点启用之后，单个FVU消息到达第一端点。 然后，响应于单个FVU消息从第一端点接收的I帧被发送回到第一端点。 要强调的是，该摘要被提供以符合要求抽象的规则，允许搜索者或其他读者快速确定技术公开内容的主题。
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公开(公告)号：US08208003B2
公开(公告)日：2012-06-26
申请号：US11728130
申请日：2007-03-23
申请人： Randall B. Baird , Ryan Knotts , Thiyagesan Ramalingam , Manjunath S. Bangalore , Shantanu Sarkar
发明人： Randall B. Baird , Ryan Knotts , Thiyagesan Ramalingam , Manjunath S. Bangalore , Shantanu Sarkar
IPC分类号： H04N7/15
CPC分类号： H04N7/15
摘要： In one embodiment, a method includes dropping an initial series of video frames received by a video conferencing system from a first endpoint that has entered a video conference session as a first participant. One or more fast video update (FVU) messages received by the video conferencing system from the first endpoint during an enabling time period are then discarded. A single FVU message is then to the first endpoint after the video conferencing system has become enabled with respect to the first endpoint. An I-frame received from the first endpoint in response to the single FVU message is then sent back to the first endpoint. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure.
摘要翻译： 在一个实施例中，一种方法包括从已经作为第一参与者进入视频会议会话的第一端点丢弃由视频会议系统接收的初始系列视频帧。 然后，丢弃在启用时段期间由视频会议系统从第一端点接收到的一个或多个快速视频更新（FVU）消息。 在视频会议系统已经相对于第一端点启用之后，单个FVU消息到达第一端点。 然后，响应于单个FVU消息从第一端点接收的I帧被发送回到第一端点。 要强调的是，该摘要被提供以符合要求抽象的规则，允许搜索者或其他读者快速确定技术公开内容的主题。
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公开(公告)号：US20080056154A1
公开(公告)日：2008-03-06
申请号：US11516933
申请日：2006-09-06
CPC分类号： H04L12/66
摘要： In one embodiment, a first audio waveform is produced at a first side of a network connection and then encoded and sent by a first endpoint device to a second endpoint device at a second side of the network connection. A second audio waveform is then detected after being played out by the first endpoint device, the second audio waveform having been produced at the second side of the network connection in response to the second endpoint device playing out the first audio waveform. A round-trip delay is then calculating based on a time period measured from output of the first audio waveform to detection of the second audio waveform. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure.
摘要翻译： 在一个实施例中，在网络连接的第一侧产生第一音频波形，然后由第一端点设备编码并发送到网络连接的第二侧的第二端点设备。 然后在由第一端点设备播放之后检测第二音频波形，响应于第二端点设备播放第一音频波形，已经在网络连接的第二侧产生了第二音频波形。 然后基于从第一音频波形的输出测量到第二音频波形的检测的时间周期来计算往返延迟。 要强调的是，该摘要被提供以符合要求抽象的规则，允许搜索者或其他读者快速确定技术公开内容的主题。
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公开(公告)号：US07916653B2
公开(公告)日：2011-03-29
申请号：US11516933
申请日：2006-09-06
CPC分类号： H04L12/66
摘要： In one embodiment, a first audio waveform is produced at a first side of a network connection and then encoded and sent by a first endpoint device to a second endpoint device at a second side of the network connection. A second audio waveform is then detected after being played out by the first endpoint device, the second audio waveform having been produced at the second side of the network connection in response to the second endpoint device playing out the first audio waveform. A round-trip delay is then calculating based on a time period measured from output of the first audio waveform to detection of the second audio waveform. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure.
摘要翻译： 在一个实施例中，在网络连接的第一侧产生第一音频波形，然后由第一端点设备编码并发送到网络连接的第二侧的第二端点设备。 然后在由第一端点设备播放之后检测第二音频波形，响应于第二端点设备播放第一音频波形，已经在网络连接的第二侧产生了第二音频波形。 然后基于从第一音频波形的输出测量到第二音频波形的检测的时间周期来计算往返延迟。 要强调的是，该摘要被提供以符合要求抽象的规则，允许搜索者或其他读者快速确定技术公开内容的主题。
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公开(公告)号：US08014322B2
公开(公告)日：2011-09-06
申请号：US11711448
申请日：2007-02-26
CPC分类号： H04L65/608 , H04L41/0213 , H04L41/046 , H04L41/22 , H04L41/5009 , H04L41/5035 , H04L65/80
摘要： In one embodiment, a method includes correlating, for each intermediate device associated with a Real-time Transport Protocol (RTP) application that connects endpoints through a plurality of intermediate devices across a network, one or more first RTP segments input into the intermediate device with one or more second RTP segments output from the intermediate device. The correlation results are then graphically displayed results of the correlating to obtain a full, end-to-end picture of RTP quality from a source endpoint to a destination endpoint of the RTP application. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure.
摘要翻译： 在一个实施例中，一种方法包括：对于与通过跨越网络的多个中间设备连接端点的实时传输协议（RTP）应用相关联的每个中间设备，将一个或多个第一RTP段输入到中间设备中， 从中间设备输出的一个或多个第二RTP段。 然后，相关结果以图形方式显示相关结果，以从源端点到RTP应用的目标端点获得RTP质量的完整的端到端图像。 要强调的是，该摘要被提供以符合要求抽象的规则，允许搜索者或其他读者快速确定技术公开内容的主题。
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公开(公告)号：US20080205390A1
公开(公告)日：2008-08-28
申请号：US11711448
申请日：2007-02-26
IPC分类号： H04L12/28
CPC分类号： H04L65/608 , H04L41/0213 , H04L41/046 , H04L41/22 , H04L41/5009 , H04L41/5035 , H04L65/80
摘要： In one embodiment, a method includes correlating, for each intermediate device associated with a Real-time Transport Protocol (RTP) application that connects endpoints through a plurality of intermediate devices across a network, one or more first RTP segments input into the intermediate device with one or more second RTP segments output from the intermediate device. The correlation results are then graphically displayed results of the correlating to obtain a full, end-to-end picture of RTP quality from a source endpoint to a destination endpoint of the RTP application. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure.
摘要翻译： 在一个实施例中，一种方法包括：对于与通过跨越网络的多个中间设备连接端点的实时传输协议（RTP）应用相关联的每个中间设备，将一个或多个第一RTP段输入到中间设备中， 从中间设备输出的一个或多个第二RTP段。 然后，相关结果以图形方式显示相关结果，以从源端点到RTP应用的目标端点获得RTP质量的完整的端到端图像。 要强调的是，该摘要被提供以符合要求抽象的规则，允许搜索者或其他读者快速确定技术公开内容的主题。
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9.发明申请公开(公告)号：US20080165245A1
公开(公告)日：2008-07-10
申请号：US11652433
申请日：2007-01-10
IPC分类号： H04N7/14
CPC分类号： H04N7/152 , H04L12/1827 , H04L65/4038 , H04L65/4053 , H04L65/607 , H04M3/569
摘要： In one embodiment, a system includes a video multipoint control unit (MCU) and an audio conferencing bridge, the audio conferencing bridge being operable to receive audio streams from audio-only and video endpoints, and to negotiate video sessions between each of the video endpoints and the video MCU. In response to detecting when one of the video endpoints is an active speaker, the audio conferencing bridge transmitting a dummy audio stream over a dummy audio channel from the audio conferencing bridge to the video MCU. The dummy audio stream causes the video MCU to switch an image in a video output stream. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure.
摘要翻译： 在一个实施例中，系统包括视频多点控制单元（MCU）和音频会议桥，音频会议桥可操作以从仅音频和视频端点接收音频流，以及协商每个视频端点之间的视频会话 和视频MCU。 响应于检测到其中一个视频端点是活动扬声器，音频会议桥将虚拟音频流从音频会议桥传输到视频MCU。 虚拟音频流使视频MCU切换视频输出流中的图像。 要强调的是，该摘要被提供以符合要求抽象的规则，允许搜索者或其他读者快速确定技术公开内容的主题。
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10.发明授权公开(公告)号：US08149261B2
公开(公告)日：2012-04-03
申请号：US11652433
申请日：2007-01-10
IPC分类号： H04N7/14
CPC分类号： H04N7/152 , H04L12/1827 , H04L65/4038 , H04L65/4053 , H04L65/607 , H04M3/569
摘要： In one embodiment, a system includes a video multipoint control unit (MCU) and an audio conferencing bridge, the audio conferencing bridge being operable to receive audio streams from audio-only and video endpoints, and to negotiate video sessions between each of the video endpoints and the video MCU. In response to detecting when one of the video endpoints is an active speaker, the audio conferencing bridge transmitting a dummy audio stream over a dummy audio channel from the audio conferencing bridge to the video MCU. The dummy audio stream causes the video MCU to switch an image in a video output stream. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure.
摘要翻译： 在一个实施例中，系统包括视频多点控制单元（MCU）和音频会议桥，音频会议桥可操作以从仅音频和视频端点接收音频流，以及协商每个视频端点之间的视频会话 和视频MCU。 响应于检测到其中一个视频端点是活动扬声器，音频会议桥将虚拟音频流从音频会议桥传输到视频MCU。 虚拟音频流使视频MCU切换视频输出流中的图像。 要强调的是，该摘要被提供以符合要求抽象的规则，允许搜索者或其他读者快速确定技术公开内容的主题。
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