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1. 发明授权

US08749612B1 Reduced bandwidth usage in video conferencing 有权
标题翻译：减少视频会议中的带宽使用
公开(公告)号：US08749612B1
公开(公告)日：2014-06-10
申请号：US13309141
申请日：2011-12-01
申请人： Lars Henrik Ellner , Andrew John MacDonald
发明人： Lars Henrik Ellner , Andrew John MacDonald
IPC分类号： H04N7/15
CPC分类号： H04N7/15 , H04L65/403 , H04L65/605
摘要： Video conferencing with reduced bandwidth usage is disclosed. One method comprises receiving an audio stream at a server station connected to a plurality of participants in the video conference, at least one participant being a client station connected to the server station by a network and supplying the audio stream, the server station including a first memory and processor, and the client station including a second memory and processor. A mixing algorithm is performed that determines which video streams of the participants to mix to form a conference video stream for display by at least one of the participants. A video stream from the client station is selectively transmitted to the server station responsive to the mixing algorithm, and the server station transmits the conference video stream and/or the streams to be mixed to the participant(s).
摘要翻译：公开了减少带宽使用的视频会议。一种方法包括在连接到视频会议中的多个参与者的服务器站处接收音频流，至少一个参与者是通过网络连接到服务器站并提供音频流的客户站，服务器站包括第一存储器和处理器，以及包括第二存储器和处理器的客户端站。执行混合算法，其确定要混合的参与者的哪些视频流以形成会议视频流以供至少一个参与者显示。响应于混合算法，来自客户站的视频流被选择性地发送到服务器站，并且服务器站将会议视频流和/或要混合的流发送给参与者。

2. 发明授权

US08782271B1 Video mixing using video speech detection 有权
标题翻译：视频混合使用视频语音检测
公开(公告)号：US08782271B1
公开(公告)日：2014-07-15
申请号：US13423341
申请日：2012-03-19
申请人： Lars Henrik Ellner
发明人： Lars Henrik Ellner
IPC分类号： G06F15/16 , H04L29/06
CPC分类号： H04L29/06176 , H04L12/1822 , H04L65/4053 , H04L65/605 , H04M3/567 , H04N7/147 , H04N7/15
摘要： A method for video conferencing includes receiving, at one or more computers from at least some remote clients from a plurality of remote clients, information representing a plurality of media frames. The method also includes receiving, at the one or more computers from at least some of the plurality of remote clients, a plurality of video-based speech activity signals each associated with a respective media frame from the plurality of media frames. The method further includes selecting, at the one or more computers, at least some media frames from the plurality of media frames based on the video-based speech activity signals, decoding the selected media frames, generating a mixed media stream by combining the decoded media frames, transmitting, from the one or more computers to at least some remote clients from the plurality of remote clients, the mixed media stream.
摘要翻译：视频会议的方法包括在来自多个远程客户端的至少一些远程客户端的一个或多个计算机处接收表示多个媒体帧的信息。该方法还包括在多个远程客户端中的至少一些远程客户端的一个或多个计算机处接收多个基于视频的语音活动信号，每个与多个媒体帧相关联的媒体帧相关联。所述方法还包括在所述一个或多个计算机处，基于所述基于视频的语音活动信号，从所述多个媒体帧中选择至少一些媒体帧，解码所选择的媒体帧，通过组合解码的媒体来产生混合媒体流帧，从一个或多个计算机向多个远程客户端的至少一些远程客户端发送混合媒体流。

3. 发明授权

US08791982B1 Video multicast engine 有权
标题翻译：视频多播引擎
公开(公告)号：US08791982B1
公开(公告)日：2014-07-29
申请号：US13534400
申请日：2012-06-27
申请人： Lars Henrik Ellner
发明人： Lars Henrik Ellner
IPC分类号： H04N7/15 , H04M3/56 , H04L12/18
CPC分类号： H04N7/15 , H04L12/1818 , H04L12/1827 , H04L65/403 , H04L65/4076 , H04L65/605 , H04M3/563 , H04M3/567
摘要： Introduction of one or more multicast engines to a video conferencing system permits an improvement of overall network bandwidth used for a video conference. A video stream is received at a multicast engine connected to a participant of a plurality of participants in the conference where the video stream is supplied by the participant. The multicast engine selectively transmits the video stream to a server station based on determining whether the video stream is a candidate for a conference video stream to be transmitted to at least some of the plurality of participants. The conference video stream is received at the multicast engine from the server station, and the stream is transmitted from the multicast engine to any participants in the video conference that are connected to the multicast engine.
摘要翻译：将一个或多个多播引擎引入视频会议系统允许改进用于视频会议的总体网络带宽。视频流在连接到会议中的多个参与者的参与者的组播引擎处被接收，其中视频流由参与者提供。多播引擎基于确定视频流是否是要发送给多个参与者中的至少一些的会议视频流的候选者，有选择地将视频流发送到服务器站。会议视频流在服务器站的多播引擎处被接收，流从组播引擎发送到连接到组播引擎的视频会议中的任何与会者。

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