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1. 发明授权

US07155480B2 Client-server conference and user seeking through a server storing a list comprising active conference servers and excluding nonactive conference servers 失效
标题翻译：客户机 - 服务器会议和用户通过存储包括活动会议服务器的列表并且排除非活动会议服务器的服务器进行搜索
公开(公告)号：US07155480B2
公开(公告)日：2006-12-26
申请号：US09157697
申请日：1998-09-21
申请人： Rajeev Byrisetty , Mu Han , Don Ryan , Thomas Pfenning , Stefan Solomon
发明人： Rajeev Byrisetty , Mu Han , Don Ryan , Thomas Pfenning , Stefan Solomon
IPC分类号： G06F15/16 , H04N7/14 , H04L12/16
CPC分类号： H04L67/16 , H04L12/1813 , H04L67/24 , H04L67/306
摘要： Client-server conference and user seeking is disclosed. In one embodiment, a system includes at least one server of a first type, a server of a second type, and a client. Each of the at least one server of the first type maintains at least one conference. The server of the second type stores a server list of the servers of the first type. The client queries this latter server to obtain the server list, and then is able to query each server on the list to learn of the conferences maintained by these servers. User lists may also be maintained by either the first and/or second server types, for querying by the client.
摘要翻译：透露客户端 - 服务器会议和用户寻求。在一个实施例中，系统包括至少一个第一类型的服务器，第二类型的服务器和客户机。第一类型的至少一个服务器中的每一个维护至少一个会议。第二类型的服务器存储第一类服务器的服务器列表。客户端查询后一个服务器以获取服务器列表，然后可以查询列表中的每个服务器，以了解这些服务器维护的会议。用户列表也可以由第一和/或第二服务器类型来维护，以供客户查询。

2. 发明授权

US06839734B1 Multimedia communications software with network streaming and multi-format conferencing 有权
标题翻译：具有网络流和多格式会议的多媒体通信软件
公开(公告)号：US06839734B1
公开(公告)日：2005-01-04
申请号：US09157884
申请日：1998-09-21
申请人： Andres Vega-Garcia , Mu Han , Donald R. Ryan , Thomas Pfenning , Rajeev Byrisetty , Stefan Solomon , Michael Clark
发明人： Andres Vega-Garcia , Mu Han , Donald R. Ryan , Thomas Pfenning , Rajeev Byrisetty , Stefan Solomon , Michael Clark
IPC分类号： H04L29/06 , G06F15/16 , H04L12/16
CPC分类号： H04L65/608 , H04L29/06027 , H04L65/4046
摘要： Computers, particularly personal computers, have become everyday communications devices, nearly as common as telephones and televisions. A big reason for this is the expansion of computer networks, such as the Internet, which allow sending and receiving information, including audio and video information, from one computer to one or more other computers. Communicating audio and video information between computers can be problematic because users have to wait for the information to be fully downloaded before viewing or hearing it and because different computers sometimes communicate using incompatible communications protocols, which prevents comprehension. Accordingly, the inventors devised new methods, software, and computer systems that support interactive data streaming (real-time exchange of multimedia data) and full-duplex communications, for example, network conferencing, using more than one communications protocol.
摘要翻译：计算机，特别是个人计算机，已经成为日常通信设备，几乎和电话和电视一样普遍。这样做的一个重要原因是诸如因特网的计算机网络的扩展，其允许从一台计算机向一台或多台其他计算机发送和接收包括音频和视频信息的信息。在计算机之间传播音频和视频信息可能是有问题的，因为用户必须在查看或听到信息之前等待信息被完全下载，并且因为不同的计算机有时使用不兼容的通信协议进行通信，这阻碍了理解。因此，本发明人设计了使用多于一种通信协议来支持交互式数据流（多媒体数据的实时交换）和全双工通信（例如，网络会议）的新方法，软件和计算机系统。

3. 发明申请

US20060013266A1 Multimedia communications software with network streaming and multi-format conferencing 审中-公开
标题翻译：具有网络流和多格式会议的多媒体通信软件
公开(公告)号：US20060013266A1
公开(公告)日：2006-01-19
申请号：US10990339
申请日：2004-11-16
申请人： Andres Vega-Garcia , Mu Han , Donald Ryan , Thomas Pfenning , Rajeev Byrisetty , Stefan Solomon , Michael Clark
发明人： Andres Vega-Garcia , Mu Han , Donald Ryan , Thomas Pfenning , Rajeev Byrisetty , Stefan Solomon , Michael Clark
IPC分类号： H04J3/04
CPC分类号： H04L65/608 , H04L29/06027 , H04L65/4046
摘要： Computers, particularly personal computers, have become everyday communications devices, nearly as common as telephones and televisions. A big reason for this is the expansion of computer networks, such as the internet, which allow sending and receiving information, including audio and video information, from one computer to one or more other computers. Communicating audio and video information between computers can be problematic because users have to wait for the information to be fully downloaded before viewing or hearing it and because different computers sometimes communicate using incompatible communications protocols, which prevents comprehension. Accordingly, the inventors devised new methods, software, and computer systems that support interactive data streaming (real-time exchange of multimedia data) and full-duplex communications, for example, network conferencing, using more than one communications protocol.
摘要翻译：计算机，特别是个人计算机，已经成为日常通信设备，几乎和电话和电视一样普遍。这样做的一个重要原因是诸如互联网的计算机网络的扩展，其允许从一台计算机向一台或多台其他计算机发送和接收包括音频和视频信息的信息。在计算机之间传播音频和视频信息可能是有问题的，因为用户必须在查看或听到信息之前等待信息被完全下载，并且因为不同的计算机有时使用不兼容的通信协议进行通信，这阻碍了理解。因此，本发明人设计了使用多于一种通信协议来支持交互式数据流（多媒体数据的实时交换）和全双工通信（例如，网络会议）的新方法，软件和计算机系统。

4. 发明授权

US08295475B2 Selective glitch detection, clock drift compensation, and anti-clipping in audio echo cancellation 有权
标题翻译：选择性毛刺检测，时钟漂移补偿和音频回声消除中的抗剪辑
公开(公告)号：US08295475B2
公开(公告)日：2012-10-23
申请号：US11332500
申请日：2006-01-13
申请人： Qin Li , Chao He , Wei-Ge Chen , Mu Han
发明人： Qin Li , Chao He , Wei-Ge Chen , Mu Han
IPC分类号： H04M9/08
CPC分类号： H04M9/082
摘要： The quality and robustness of audio echo cancellation is enhanced by selectively applying glitch recovery processes based on a quality measurement of the relative offset between capture and render audio streams. For example, large and small glitch detection is enabled for low relative offset variance; large glitch detection is enabled in a medium range of relative offset variance; and neither enabled at high variance. Further, a fast glitch recovery process suspends updating the adaptive filter coefficients of the audio echo cancellation while buffers are re-aligned to recover from the glitch, so as to avoid resetting the adaptive filter. When clock drift exists between capture and render audio streams, a multi-step compensation method is applied to improve AEC output quality in case the drifting rate is low; and a resampler is used to compensate the drift in case the drifting rate is high. An anti-clipping process detects clipping of the signals, and also suspends adaptive filter updating during clipping.
摘要翻译：通过基于捕获和渲染音频流之间的相对偏移的质量测量来选择性地应用毛刺恢复过程来增强音频回声消除的质量和鲁棒性。例如，对于低相对偏移方差，启用大的和小的毛刺检测; 在相对偏移方差的中等范围内启用大毛刺检测; 并且在高方差时都不启用。此外，快速毛刺恢复处理暂停更新音频回声消除的自适应滤波器系数，同时缓冲器被重新对准以从毛刺恢复，以避免复位自适应滤波器。当捕获和渲染音频流之间存在时钟漂移时，应用多步补偿方法来提高漂移率低的AEC输出质量; 并且在漂移速率高的情况下使用重采样器来补偿漂移。反剪辑过程检测信号的剪辑，并且还可以在剪辑期间暂停自适应滤波器更新。

5. 发明申请

US20100149301A1 Video Conferencing Subscription Using Multiple Bit Rate Streams 审中-公开
标题翻译：使用多个比特流的视频会议订阅
公开(公告)号：US20100149301A1
公开(公告)日：2010-06-17
申请号：US12334836
申请日：2008-12-15
申请人： Ming-Chieh Lee , Mu Han , Tim Moore
发明人： Ming-Chieh Lee , Mu Han , Tim Moore
IPC分类号： H04N7/14
CPC分类号： H04N7/15 , H04L12/1818 , H04L12/1877 , H04N7/147 , H04N21/42203 , H04N21/4223 , H04N21/440263 , H04N21/440281 , H04N21/4788 , H04N21/6332 , H04N21/6377 , H04N21/658
摘要： Subscriptions in a video conference may be provided using multiple bit rate streams. A video conference server may receive video streams from each client in a video conference and may receive subscription requests from each client. The subscription requests may include requests to see video streams from specific other clients at a given resolution and/or frame rate. The video conference server may match up the received video streams with the subscription requests in order to send the subscribing clients their desired video streams. The server may also be able to request different versions of video streams from participants (e.g. different resolutions) and/or alter the video streams in order to better comply with the subscription request.
摘要翻译：可以使用多个比特率流来提供视频会议中的订阅。视频会议服务器可以在视频会议中从每个客户端接收视频流，并且可以接收来自每个客户端的订阅请求。订阅请求可以包括以给定分辨率和/或帧速率查看来自特定其他客户端的视频流的请求。视频会议服务器可以将接收到的视频流与订阅请求相匹配，以便向订阅的客户端发送其期望的视频流。服务器还可以从参与者请求不同版本的视频流（例如，不同的分辨率）和/或改变视频流，以便更好地符合订阅请求。

6. 发明授权

US07554922B2 Method and system for providing adaptive bandwidth control for real-time communication 有权
标题翻译：为实时通信提供自适应带宽控制的方法和系统
公开(公告)号：US07554922B2
公开(公告)日：2009-06-30
申请号：US11560445
申请日：2006-11-16
申请人： Andres Vega-Garcia , Mu Han , Qianbo Huai
发明人： Andres Vega-Garcia , Mu Han , Qianbo Huai
IPC分类号： H04J3/14
CPC分类号： H04L65/608 , H04L29/06 , H04L29/06027 , H04L47/10 , H04L47/115 , H04L47/263 , H04L47/283 , H04L65/80
摘要： A method and system for dynamically altering the transmission settings of one or more computing devices engaged in a real-time communication session is presented. The devices exchange meaningful and dummy control packets according to a standard control protocol. The approximate bandwidth available on the network is then calculated based on the difference in arrival times between at least one of the dummy control packets and at least one of the meaningful control packets. Once the approximate bandwidth available on the network is computed, the one or more devices adjust outgoing audio and video data streams using a quality control mechanism. The quality control mechanism enables the one or more devices to transmit data in a way that maximizes the user experience during the real-time communication session.
摘要翻译：提出了一种用于动态地改变参与实时通信会话的一个或多个计算设备的传输设置的方法和系统。设备根据标准控制协议交换有意义的和虚拟的控制数据包。然后基于至少一个虚拟控制分组与至少一个有意义的控制分组之间的到达时间的差异来计算网络上可用的大致带宽。一旦计算了网络上可用的大致带宽，则一个或多个设备使用质量控制机制来调整输出的音频和视频数据流。质量控制机制使得一个或多个设备能够以在实时通信会话期间最大化用户体验的方式来发送数据。

7. 发明申请

US20080294793A1 REDUCING INFORMATION RECEPTION DELAYS 有权
标题翻译：减少信息接收延迟
公开(公告)号：US20080294793A1
公开(公告)日：2008-11-27
申请号：US11951912
申请日：2007-12-06
申请人： Mu Han , Andres Vega Garcia , Wei Zhong
发明人： Mu Han , Andres Vega Garcia , Wei Zhong
IPC分类号： G06F15/16
CPC分类号： H04L12/6418 , H04L2012/6472 , Y10S345/951
摘要： A technique for reducing information reception delays is provided. The technique reduces delays that may be caused by protocols that guarantee order and delivery, such as TCP/IP. The technique creates multiple connections between a sender and recipient computing devices and sends messages from the sender to the recipient on the multiple corrections redundantly. The recipient can then use the first arriving message and ignore the subsequently arriving redundant messages. The recipient can also wait for a period of time before determining which of the arrived messages to use. The technique may dynamically add connections if messages are not consistently received in a timely manner on multiple connections. Conversely, the technique may remove connections if messages are consistently received in a timely manner on multiple connections. The technique can accordingly be used with applications that are intolerant of data reception delays such as Voice over IP, real-time streaming audio, or real-time streaming video.
摘要翻译：提供了用于减少信息接收延迟的技术。该技术减少了可能由保证订单和传递的协议（如TCP / IP）引起的延迟。该技术在发送方和收件人计算设备之间创建多个连接，并以多次更正方式从发送方向接收方发送消息。接收者可以使用第一个到达的消息，并忽略随后到达的冗余消息。收件人还可以等待一段时间才能确定要使用的到达消息。如果在多个连接上不及时地接收到消息，则该技术可以动态地添加连接。相反，如果在多个连接上一致地接收到消息，则该技术可以去除连接。因此，该技术可以与不耐受诸如IP语音，实时流音频或实时流视频之类的数据接收延迟的应用一起使用。

8. 发明申请

US20100153574A1 Video Conference Rate Matching 有权
标题翻译：视频会议费率匹配
公开(公告)号：US20100153574A1
公开(公告)日：2010-06-17
申请号：US12334969
申请日：2008-12-15
申请人： Ming-Chieh Lee , Mu Han , Tim Moore
发明人： Ming-Chieh Lee , Mu Han , Tim Moore
IPC分类号： G06F15/16
CPC分类号： H04N7/15 , H04L12/1827 , H04N21/25833 , H04N21/44029 , H04N21/4788 , H04N21/6377 , H04N21/658
摘要： Video conference rate matching may be provided. A video conference server may receive video source streams from clients on a video conference. The server may analyze each client's capabilities and choose a video stream to send to each client based on those capabilities. For example, a client capable of encoding and decoding a high definition video stream may provide three source video streams—a high definition stream, a medium resolution stream, and a low resolution stream. The server may send only the low resolution stream to a client with a low amount of available bandwidth. The server may send the medium resolution stream to another client with sufficient bandwidth for the high definition stream, but which lacks the ability to decode the high definition stream. choosing at least one of the plurality of data streams to send to the at least one of the plurality of clients based on the analyzed at least one capability; and sending the chosen at least one of the plurality of data streams to the at least one of the plurality of clients.
摘要翻译：可以提供视频会议速率匹配。视频会议服务器可以在视频会议上从客户接收视频源流。服务器可以分析每个客户端的功能，并根据这些功能选择一个视频流来发送给每个客户端。例如，能够对高分辨率视频流进行编码和解码的客户端可以提供三个源视频流 - 高清晰度流，中分辨率流和低分辨率流。服务器只能将低分辨率流发送到具有低可用带宽的客户端。服务器可以向具有足够带宽的高清晰度流的另一个客户端发送媒体分辨率流，但是缺少解码高分辨率流的能力。基于所分析的至少一个能力来选择所述多个数据流中的至少一个以发送到所述多个客户端中的至少一个; 以及将所选择的所述多个数据流中的至少一个发送到所述多个客户端中的至少一个。

9. 发明申请

US20080022383A1 METHOD AND SYSTEM FOR INTEGRATING SECURITY MECHANISMS INTO SESSION INITIATION PROTOCOL REQUEST MESSAGES FOR CLIENT-PROXY AUTHENTICATION 有权
标题翻译：将安全机制整合到会议启动协议请求消息中进行客户端验证的方法和系统
公开(公告)号：US20080022383A1
公开(公告)日：2008-01-24
申请号：US11757877
申请日：2007-06-04
申请人： Nikhil Bobde , Ann Demirtjis , Mu Han
发明人： Nikhil Bobde , Ann Demirtjis , Mu Han
IPC分类号： G06F7/04
CPC分类号： H04L63/123 , H04L29/06027 , H04L63/0807 , H04L63/0869 , H04L63/205 , H04L65/1006
摘要： A method and system is provided to integrate the Kerberos security mechanism into the message flow of the signaling operation under the Session Initiation Protocol to allow a SIP client and a SIP proxy to authenticate each other. When the SIP proxy receives an request message, such an INVITE request, from the SIP client, it responds with a challenge message indicating that authentication based on Kerberos is required. In response, the SIP client sends a second request message with a proxy authorization header containing authentication data, including a Kerberos server ticket for the Proxy, to allow the proxy to authenticate the client's user.
摘要翻译：提供了一种方法和系统，用于将Kerberos安全机制集成到会话发起协议下的信令操作的消息流中，以允许SIP客户端和SIP代理相互认证。当SIP代理从SIP客户端接收到这样一个INVITE请求的请求消息时，它响应一个询问消息，指示需要基于Kerberos的认证。作为响应，SIP客户端发送具有包含认证数据的代理授权报头的第二请求消息，包括用于代理的Kerberos服务器故障单，以允许代理对客户端的用户进行认证。

10. 发明申请

US20070115949A1 Infrastructure for enabling high quality real-time audio 审中-公开
标题翻译：实现高质量实时音频的基础设施
公开(公告)号：US20070115949A1
公开(公告)日：2007-05-24
申请号：US11281113
申请日：2005-11-17
申请人： Mu Han , Warren Barkley , Wei Zhong , Gurdeep Pall
发明人： Mu Han , Warren Barkley , Wei Zhong , Gurdeep Pall
IPC分类号： H04L12/66
CPC分类号： H04L29/06027 , H04L65/103 , H04L65/104 , H04L65/605 , H04L65/80
摘要： Various technologies and techniques are disclosed that improve media communications. In one embodiment, a media server receives a media communication with a first quality from a personal computer with VoIP telephone capabilities. The media server translates the media (e.g., audio, visual, etc.) communication into a second quality, and forwards the media communication to a communication gateway. The translation to improve communications can also be done when receiving the media communication from the communication gateway for forwarding to the persona computer having VoIP telephone capability. In some embodiments, a media server sits in the communication channel between a personal computer with VoIP telephone capabilities and a communication gateway and is able to translate communications into codec protocols they each understand.
摘要翻译：公开了改进媒体通信的各种技术和技术。在一个实施例中，媒体服务器从具有VoIP电话能力的个人计算机接收具有第一质量的媒体通信。媒体服务器将媒体（例如，音频，视频等）通信转换成第二质量，并将媒体通信转发到通信网关。当从通信网关接收媒体通信以转发到具有VoIP电话能力的个人计算机时，也可以进行改善通信的转换。在一些实施例中，媒体服务器位于具有VoIP电话能力的个人计算机和通信网关之间的通信信道中，并且能够将通信转换为他们都理解的编解码器协议。

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