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11. 发明授权

US07724780B2 Synchronization of one or more source RTP streams at multiple receiver destinations 有权
标题翻译：在多个接收方目的地同步一个或多个源RTP流
公开(公告)号：US07724780B2
公开(公告)日：2010-05-25
申请号：US11788620
申请日：2007-04-19
申请人： Randall B. Baird , Scott Firestone
发明人： Randall B. Baird , Scott Firestone
IPC分类号： H04J3/06
CPC分类号： H04J3/0632 , H04L7/08 , H04N7/54 , H04N21/2368 , H04N21/4307 , H04N21/6332 , H04N21/6437 , H04N21/654
摘要： In one embodiment, a method includes synchronizing to a common reference timeframe between a sender node and a plurality of receiver nodes connected over a packet-based network. The sender node sends Real-Time Protocol (RTP) frames to the receiver nodes, and also sends a RTP Control Protocol (RTCP) sender report to each receiver node that contains a rendering offset value, each receiver node rendering the RTP frames at a render time equal to a sampling time in units of the common reference timeframe plus the rendering offset value. 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，一种方法包括与发送方节点和通过基于分组的网络连接的多个接收机节点之间的公共参考时间帧同步。发送方节点向接收节点发送实时协议（RTP）帧，并且还向包含呈现偏移值的每个接收器节点发送RTP控制协议（RTCP）发送者报告，每个接收方节点在渲染时渲染RTP帧时间等于以公共参考时间帧为单位的采样时间加上渲染偏移值。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。

12. 发明申请

US20080259966A1 Synchronization of one or more source RTP streams at multiple receiver destinations 有权
标题翻译：在多个接收方目的地同步一个或多个源RTP流
公开(公告)号：US20080259966A1
公开(公告)日：2008-10-23
申请号：US11788620
申请日：2007-04-19
申请人： Randall B. Baird , Scott Firestone
发明人： Randall B. Baird , Scott Firestone
IPC分类号： H04J3/06
CPC分类号： H04J3/0632 , H04L7/08 , H04N7/54 , H04N21/2368 , H04N21/4307 , H04N21/6332 , H04N21/6437 , H04N21/654
摘要： In one embodiment, a method includes synchronizing to a common reference timeframe between a sender node and a plurality of receiver nodes connected over a packet-based network. The sender node sends Real-Time Protocol (RTP) frames to the receiver nodes, and also sends a RTP Control Protocol (RTCP) sender report to each receiver node that contains a rendering offset value, each receiver node rendering the RTP frames at a render time equal to a sampling time in units of the common reference timeframe plus the rendering offset value. 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，一种方法包括与发送方节点和通过基于分组的网络连接的多个接收机节点之间的公共参考时间帧同步。发送方节点向接收节点发送实时协议（RTP）帧，并且还向包含呈现偏移值的每个接收器节点发送RTP控制协议（RTCP）发送者报告，每个接收方节点在渲染时渲染RTP帧时间等于以公共参考时间帧为单位的采样时间加上渲染偏移值。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。

13. 发明申请

US20070201621A1 System and Method for End-To-End Communications Tracing 有权
标题翻译：端到端通信跟踪的系统和方法
公开(公告)号：US20070201621A1
公开(公告)日：2007-08-30
申请号：US11736157
申请日：2007-04-17
申请人： Randall Ethier , Michael Hammer , Scott Firestone
发明人： Randall Ethier , Michael Hammer , Scott Firestone
IPC分类号： H04M3/22 , H04M3/08 , H04M1/24
CPC分类号： H04M3/2254 , H04L43/00 , H04L43/06 , H04L43/10 , H04M3/2281 , H04M7/0084 , H04M7/009 , H04Q3/0025 , H04Q3/0087
摘要： A method for tracing communications includes receiving trace criteria from a first remote element and determining whether a call signaling message matches the trace criteria. The method includes attaching a trace tag to the call signaling message, if the call signaling message matches the trace criteria. The method further includes transmitting the call signaling message to a second remote element.
摘要翻译：用于跟踪通信的方法包括从第一远程元件接收跟踪标准并确定呼叫信令消息是否匹配跟踪标准。该方法包括将跟踪标签附加到呼叫信令消息，如果呼叫信令消息符合跟踪标准。该方法还包括将呼叫信令消息发送到第二远程元件。

14. 发明申请

US20070201620A1 System and Method for End-To-End Communications Tracing 有权
公开(公告)号：US20070201620A1
公开(公告)日：2007-08-30
申请号：US11736130
申请日：2007-04-17
申请人： Randall Ethier , Michael Hammer , Scott Firestone
发明人： Randall Ethier , Michael Hammer , Scott Firestone
IPC分类号： H04M3/22 , H04M1/24 , H04M3/08
CPC分类号： H04M3/2254 , H04L43/00 , H04L43/06 , H04L43/10 , H04M3/2281 , H04M7/0084 , H04M7/009 , H04Q3/0025 , H04Q3/0087
摘要： A method for tracing communications includes receiving trace criteria from a first remote element and determining whether a call signaling message matches the trace criteria. The method includes attaching a trace tag to the call signaling message, if the call signaling message matches the trace criteria. The method further includes transmitting the call signaling message to a second remote element.

15. 发明申请

US20050078170A1 System and method for performing distributed video conferencing 有权
公开(公告)号：US20050078170A1
公开(公告)日：2005-04-14
申请号：US10680918
申请日：2003-10-08
申请人： Scott Firestone , Walter Friedrich , Nermin Ismail , Keith Lantz , Shantanu Sarkar , Luke Surazski , Duanpei Wu
发明人： Scott Firestone , Walter Friedrich , Nermin Ismail , Keith Lantz , Shantanu Sarkar , Luke Surazski , Duanpei Wu
IPC分类号： H04N7/15 , 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.

16. 发明授权

US07693190B2 Lip synchronization for audio/video transmissions over a network 有权
标题翻译：通过网络进行音频/视频传输的唇形同步
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。

17. 发明授权

US07535995B1 System and method for volume indication during a communication session 有权
标题翻译：在通信会话期间用于音量指示的系统和方法
公开(公告)号：US07535995B1
公开(公告)日：2009-05-19
申请号：US10059675
申请日：2002-01-29
申请人： Scott Firestone
发明人： Scott Firestone
IPC分类号： H04M1/64
CPC分类号： H04M1/2535 , G06Q30/0247 , H04M1/60 , H04N7/147 , H04N2007/145
摘要： A method for volume indication during a communication session includes detecting analog audio at a telephony device. First communication packets are transmitted from the telephony device indicating that the analog audio is being received. The analog audio is encoded to a digital audio stream and second communication packets comprising the digital audio stream are transmitted from the telephony device. In accordance with a particular embodiment, the first communication packets indicate an approximate volume level of the analog audio. The method may also include receiving, at the telephony device, analog video. The analog video is converted to a digital video stream. The digital video stream may be transmitted from the telephony device.
摘要翻译：在通信会话期间的用于音量指示的方法包括在电话设备处检测模拟音频。从电话设备发送指示正在接收模拟音频的第一通信分组。模拟音频被编码为数字音频流，并且包括数字音频流的第二通信分组从电话设备发送。根据特定实施例，第一通信分组指示模拟音频的近似音量。该方法还可以包括在电话设备处接收模拟视频。模拟视频转换为数字视频流。数字视频流可以从电话设备发送。

18. 发明申请

US20080075256A1 Voice Conference Historical Monitor 有权
标题翻译：语音会议历史监视器
公开(公告)号：US20080075256A1
公开(公告)日：2008-03-27
申请号：US11950627
申请日：2007-12-05
申请人： Scott Firestone
发明人： Scott Firestone
IPC分类号： H04M3/42
CPC分类号： H04M3/2218 , H04M3/42025 , H04M3/42221 , H04M3/56 , H04M2201/14 , H04M2201/36 , H04M2201/38
摘要： A method includes determining information regarding a conference among a plurality of participants. The information may include a respective cumulative talk time of each of the plurality of participants. In accordance with a particular embodiment of the present invention, the respective cumulative talk times of each of the plurality of participants is graphically presented to at least one of the plurality of participants.
摘要翻译：一种方法包括在多个参与者中确定关于会议的信息。该信息可以包括多个参与者中的每一个的相应的累积通话时间。根据本发明的特定实施例，多个参与者中的每一个的相应累积通话时间被图形地呈现给多个参与者中的至少一个。

19. 发明申请

US20070064901A1 System and method for performing distributed multipoint video conferencing 有权
标题翻译：用于执行分布式多点视频会议的系统和方法
公开(公告)号：US20070064901A1
公开(公告)日：2007-03-22
申请号：US11210325
申请日：2005-08-24
申请人： Randall Baird , Scott Firestone , Luke Surazski , Duanpei Wu
发明人： Randall Baird , Scott Firestone , Luke Surazski , Duanpei Wu
IPC分类号： H04M3/42
CPC分类号： H04N7/15 , H04N7/152
摘要： According to an embodiment of the present invention, an apparatus for performing video conferencing is provided that includes an I-frame injector element operable to intercept I-frame requests from one or more end points and to attempt to service the I-frame requests such that at least a portion of the requests are prevented from propagating back to an originating sender. In more specific embodiments, when a receiver endpoint sends a fast video update (FVU) request upstream, it is intercepted by the I-frame injector element and rather than passing the FVU request to the sender the I-frame injector element replaces a next P-frame from the sender with an I-frame, whereby the I-frame is constructed so that when decoded, it matches the P-frame that it replaced. In still more detailed embodiments, the I-frame injector element operates in one of three modes that are associated with bandwidth parameters.
摘要翻译：根据本发明的实施例，提供了一种用于执行视频会议的装置，其包括I帧注入器元件，其可操作以截取来自一个或多个端点的I帧请求并尝试对I帧请求进行服务，使得至少一部分请求被阻止传播回始发端。在更具体的实施例中，当接收机端点在上游发送快速视频更新（FVU）请求时，它被I帧注入器元件拦截，而不是将FVU请求传递给发送器，I帧注入器元件替换下一个P - 帧从具有I帧的发送器发送，由此构造I帧，使得当被解码时，它与其所取代的P帧匹配。在更详细的实施例中，I帧注入器元件以与带宽参数相关联的三种模式之一操作。

20. 发明申请

US20050248652A1 System and method for performing distributed video conferencing 有权
公开(公告)号：US20050248652A1
公开(公告)日：2005-11-10
申请号：US11180826
申请日：2005-07-12
申请人： Scott Firestone , Walter Friedrich , Nermin Ismail , Keith Lantz , Shantanu Sarkar , Luke Surazski , Duanpei Wu
发明人： Scott Firestone , Walter Friedrich , Nermin Ismail , Keith Lantz , Shantanu Sarkar , Luke Surazski , Duanpei Wu
IPC分类号： H04N7/15 , H04N7/14
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.

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