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1. 发明授权

US07770007B2 Method and system for integrating security mechanisms into session initiation protocol request messages for client-proxy authentication 有权
标题翻译：将安全机制集成到会话发起协议请求消息中进行客户端代理认证的方法和系统
公开(公告)号：US07770007B2
公开(公告)日：2010-08-03
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： H04L9/32 , H04L29/06 , G06F17/00
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。

2. 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。

3. 发明授权

US07243370B2 Method and system for integrating security mechanisms into session initiation protocol request messages for client-proxy authentication 有权
标题翻译：将安全机制集成到会话发起协议请求消息中进行客户端代理认证的方法和系统
公开(公告)号：US07243370B2
公开(公告)日：2007-07-10
申请号：US10151747
申请日：2002-05-17
申请人： Nikhil P. Bobde , Ann Demirtjis , Mu Han
发明人： Nikhil P. Bobde , Ann Demirtjis , Mu Han
IPC分类号： G06F7/04 , G06F7/58
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。

4. 发明授权

US08321506B2 Architecture for an extensible real-time collaboration system 有权
标题翻译：可扩展实时协作系统架构
公开(公告)号：US08321506B2
公开(公告)日：2012-11-27
申请号：US10918855
申请日：2004-08-14
申请人： Mu Han , Krishnamurthy Ganesan , Adrian Potra , Nikhil Bobde
发明人： Mu Han , Krishnamurthy Ganesan , Adrian Potra , Nikhil Bobde
IPC分类号： G06F15/16 , H04Q11/00
CPC分类号： H04L65/1006 , G06F9/54 , H04L29/06 , H04L29/06027 , H04L65/403
摘要： An architecture for an extensible real-time collaboration system is provided. The architecture presents a unified application program interface for writing application programs that use communications protocols. The architecture has activity objects, endpoint objects, and multiple media stacks. These objects may use various communications protocols, such as Session Initiation Protocol or Real-Time Transport Protocol to send and receive messages. The activity objects, endpoint objects, and multiple media stacks may each have one or more APIs that an application developer can use to access or provide collaboration-related functionality. These objects map the API to the underlying implementation provided by other objects. Using the activity objects enables a developer to provide less application logic than would otherwise be necessary to provide complex collaboration services.
摘要翻译：提供了可扩展实时协作系统的架构。该架构提供了一个统一的应用程序界面，用于编写使用通信协议的应用程序。该架构具有活动对象，端点对象和多个媒体堆栈。这些对象可以使用各种通信协议，例如会话发起协议或实时传输协议来发送和接收消息。活动对象，端点对象和多个媒体堆栈可以各自具有应用开发者可以用来访问或提供协作相关功能的一个或多个API。这些对象将API映射到其他对象提供的底层实现。使用活动对象使开发人员能够提供比提供复杂协作服务所必需的更少的应用程序逻辑。

5. 发明申请

US20050091435A1 Architecture for an extensible real-time collaboration system 有权
标题翻译：可扩展实时协作系统架构
公开(公告)号：US20050091435A1
公开(公告)日：2005-04-28
申请号：US10918855
申请日：2004-08-14
申请人： Mu Han , Krishnamurthy Ganesan , Adrian Potra , Nikhil Bobde
发明人： Mu Han , Krishnamurthy Ganesan , Adrian Potra , Nikhil Bobde
IPC分类号： G06F9/54 , G06F9/38 , G06F9/46 , G06F15/00 , H04L29/06 , G06F9/00
CPC分类号： H04L65/1006 , G06F9/54 , H04L29/06 , H04L29/06027 , H04L65/403
摘要： An architecture for an extensible real-time collaboration system is provided. The architecture presents a unified application program interface for writing application programs that use communications protocols. The architecture has activity objects, endpoint objects, and multiple media stacks. These objects may use various communications protocols, such as Session Initiation Protocol or Real-Time Transport Protocol to send and receive messages. The activity objects, endpoint objects, and multiple media stacks may each have one or more APIs that an application developer can use to access or provide collaboration-related functionality. These objects map the API to the underlying implementation provided by other objects. Using the activity objects enables a developer to provide less application logic than would otherwise be necessary to provide complex collaboration services.
摘要翻译：提供了可扩展实时协作系统的架构。该架构提供了一个统一的应用程序界面，用于编写使用通信协议的应用程序。该架构具有活动对象，端点对象和多个媒体堆栈。这些对象可以使用各种通信协议，例如会话发起协议或实时传输协议来发送和接收消息。活动对象，端点对象和多个媒体堆栈可以各自具有应用开发者可以用来访问或提供协作相关功能的一个或多个API。这些对象将API映射到其他对象提供的底层实现。使用活动对象使开发人员能够提供比提供复杂协作服务所必需的更少的应用程序逻辑。

6. 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。

7. 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。

8. 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。

9. 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。

10. 发明授权

US07698365B2 Multipoint processing unit 有权
标题翻译：多点处理单元
公开(公告)号：US07698365B2
公开(公告)日：2010-04-13
申请号：US11838798
申请日：2007-08-14
申请人： Michael R. Van Buskirk , Philippe Ferriere , Mu Han
发明人： Michael R. Van Buskirk , Philippe Ferriere , Mu Han
IPC分类号： G06F15/16 , G06F15/173
CPC分类号： H04L65/4038 , H04L12/1822 , H04L65/103 , H04L65/104 , H04L65/605 , H04L69/08 , H04N7/152
摘要： A system to provide a multipoint processing terminal and a multicast bridging terminal to provide mixing, switching, and other processing of media streams under the control of H.323 components. Application Programming Interfaces defined for the multipoint processing terminal provide a multipoint control unit with the capability to change the default behavior of the multipoint processing terminal by allowing the multipoint control unit to control the routing audio and video streams in the multipoint processing terminal and control the media formats in a multipoint conference. Multipoint processing acceleration functionality is provided by providing interfaces to allow hardware accelerated implementations of multipoint processing terminals. The multicast bridging terminals enables clients using one type of control signaling and media streaming to join other conferences using different types of control signaling and media streaming by receiving audio or video data from an incoming media stream and performing any processing necessary to transform the media stream from the incoming stream data format to the outgoing stream data format.
摘要翻译：一种提供多点处理终端和组播桥接终端的系统，用于在H.323组件的控制下提供媒体流的混合，切换和其他处理。应用程序编程为多点处理终端定义的接口提供多点控制单元，具有通过允许多点控制单元控制多点处理终端中的路由音频和视频流并控制媒体的能力来改变多点处理终端的默认行为的能力多点会议中的格式。通过提供允许多点处理终端的硬件加速实现的接口来提供多点处理加速功能。组播桥接终端使得客户端能够使用一种类型的控制信令和媒体流来使用不同类型的控制信令和媒体流来连接其他会议，通过从传入的媒体流接收音频或视频数据，并执行将媒体流从输入流数据格式为输出流数据格式。

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