公开(公告)号：WO2010074828A1

公开(公告)日：2010-07-01

申请号：PCT/US2009/063739

申请日：2009-11-09

Applicant: MICROSOFT CORPORATION

Inventor： LEE, Ming-Chieh ,  HAN, Mu ,  MOORE, Tim

IPC: H04N7/15 ,  H04N7/12

CPC classification number: H04N7/15 ,  H04L12/1827 ,  H04N21/25833 ,  H04N21/44029 ,  H04N21/4788 ,  H04N21/6377 ,  H04N21/658

Abstract: 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.

Abstract translation: 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，但是缺乏解码高清晰度流的能力。

公开(公告)号：WO2008060732A2

公开(公告)日：2008-05-22

申请号：PCT/US2007/075907

申请日：2007-08-14

Applicant: MICROSOFT CORPORATION

Inventor： BARKLEY, Warren V. ,  CHOU, Philip A. ,  CRINON, Regis J. ,  MOORE, Tim

IPC: H04N7/24

CPC classification number: H04N21/8451 ,  H04N19/132 ,  H04N19/31 ,  H04N19/33 ,  H04N19/587 ,  H04N19/59 ,  H04N19/70 ,  H04N21/234327 ,  H04N21/234345 ,  H04N21/234363 ,  H04N21/234381

Abstract: Techniques for variable resolution encoding and decoding of digital video are described. An apparatus may comprise a video encoder to encode video information into a video stream with a base layer and an enhancement layer. The base layer may have a first level of spatial resolution and a first level of temporal resolution. The enhancement layer may increase the first level of spatial resolution or the first level of temporal resolution. Other embodiments are described and claimed.

Abstract translation: 描述了用于数字视频的可变分辨率编码和解码的技术。 一种装置可以包括视频编码器，以将视频信息编码成具有基本层和增强层的视频流。 基础层可以具有第一级空间分辨率和第一级时间分辨率。 增强层可以增加第一级空间分辨率或第一级时间分辨率。 描述并要求保护其他实施例。

公开(公告)号：WO2013106357A1

公开(公告)日：2013-07-18

申请号：PCT/US2013/020717

申请日：2013-01-09

Applicant: MICROSOFT CORPORATION

Inventor： SHEN, Li ,  MOORE, Tim ,  WANG, Shiwei ,  QIAN, Tin

IPC: H04L12/853 ,  H04L12/703 ,  H04L29/06

CPC classification number: H04L1/0057 ,  H03M13/098 ,  H03M13/1515 ,  H03M13/19 ,  H03M13/356 ,  H04L1/0046

Abstract: Systems, methods and computer program products for facilitating the recovery of lost real-time media packets within a computer network real-time application implementing Forward Error Control (FEC), such that server performance is not affected from a CPU and memory perspective, are disclosed. In an embodiment, a conference server that is part of a communication network compliant with the Real Time Transport Protocol (RTP) is able to avoid regenerating FEC packets by not performing any FEC coding operation on the packets unless it is flagged to indicate regeneration via an FEC (e.g., Reed-Solomon) coding is necessary. Absent the flag, the conference server updates the received FEC packet as per the RTP and transmits the packet to its ultimate destination. Such disclosed systems, methods and computer program products are independent of the nature of the media being protected and flexible enough to support a wide variety of FEC techniques.

Abstract translation: 公开了系统，方法和计算机程序产品，用于促进恢复计算机网络中实时转发错误控制（FEC）的实时应用程序中的丢失的实时媒体数据包，使服务器性能不受CPU和存储器的影响。 。 在一个实施例中，作为符合实时传输协议（RTP）的通信网络的一部分的会议服务器能够通过不对分组执行任何FEC编码操作来避免重新生成FEC分组，除非它被标记为指示经由 FEC（例如里德 - 所罗门）编码是必要的。 没有标志，会议服务器根据RTP更新接收到的FEC包，并将包发送到其最终目的地。 这样公开的系统，方法和计算机程序产品独立于受保护的媒体的性质并足够灵活以支持各种FEC技术。

公开(公告)号：WO2011087930A3

公开(公告)日：2011-07-21

申请号：PCT/US2011/020138

申请日：2011-01-04

Applicant: MICROSOFT CORPORATION

Inventor： DONNELLY, Austin ,  ABOBA, Bernard ,  KUNTZ, Roy ,  MONTENEGRO, Gabriel ,  SINGH, Noor-E-Gagan ,  MOORE, Tim

IPC: H04W4/02 ,  H04W4/22 ,  H04L12/28 ,  H04L9/00

Abstract: Location of a communication network subscriber is determined employing confidence metrics such as remote vs. local computer usage, primary user in a multi-user computing environment, likelihood of forgery, and comparable ones. A fine-grained location determination is then made based on the metric results and directory information for the particular subscriber such that services like emergency services can be provided with accurate location information.

公开(公告)号：WO2010074826A1

公开(公告)日：2010-07-01

申请号：PCT/US2009/063697

申请日：2009-11-09

Applicant: MICROSOFT CORPORATION

Inventor： LEE, Ming-Chieh ,  HAN, Mu ,  MOORE, Tim

IPC: H04L12/18 ,  H04L12/56 ,  H04N7/15

CPC classification number: H04N7/15 ,  H04L12/1818 ,  H04L12/1877 ,  H04N7/147 ,  H04N21/42203 ,  H04N21/4223 ,  H04N21/440263 ,  H04N21/440281 ,  H04N21/4788 ,  H04N21/6332 ,  H04N21/6377 ,  H04N21/658

Abstract: 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.

Abstract translation: 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，并且可以从每个客户端接收订阅请求。 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。

公开(公告)号：WO2008027724A1

公开(公告)日：2008-03-06

申请号：PCT/US2007/075963

申请日：2007-08-15

Applicant: MICROSOFT CORPORATION

Inventor： BARKLEY, Warren V. ,  CHOU, Philip A. ,  CRINON, Regis J. ,  MOORE, Tim

IPC: H04M3/56 ,  H04N7/15

CPC classification number: H04N7/15 ,  H04L65/403 ,  H04N7/14 ,  H04N7/147 ,  H04N7/152 ,  H04N19/187

Abstract: Techniques for managing visual compositions for a multimedia conference call are described. An apparatus may comprise a processor to allocate a display object bit rate for multiple display objects where a total display object bit rate for all display objects is equal to or less than a total input bit rate, and decode video information from multiple video streams each having different video layers with different levels of spatial resolution, temporal resolution and quality for two or more display objects. Other embodiments are described and claimed.

Abstract translation: 描述用于管理多媒体电话会议的视觉作品的技术。 设备可以包括处理器，用于为多个显示对象分配显示对象比特率，其中所有显示对象的总显示对象比特率等于或小于总输入比特率，并且从多个视频流解码视频信息，每个视频流具有 具有不同级别的空间分辨率，时间分辨率和两个或多个显示对象的质量的不同视频层。 描述和要求保护其他实施例。

公开(公告)号：EP2786538A1

公开(公告)日：2014-10-08

申请号：EP13736074.9

申请日：2013-01-09

Applicant: Microsoft Corporation

Inventor： SHEN, Li ,  MOORE, Tim ,  WANG, Shiwei ,  QIAN, Tin

IPC: H04L12/853 ,  H04L12/703 ,  H04L29/06

CPC classification number: H04L1/0057 ,  H03M13/098 ,  H03M13/1515 ,  H03M13/19 ,  H03M13/356 ,  H04L1/0046

Abstract: Systems, methods and computer program products for facilitating the recovery of lost real-time media packets within a computer network real-time application implementing Forward Error Control (FEC), such that server performance is not affected from a CPU and memory perspective, are disclosed. In an embodiment, a conference server that is part of a communication network compliant with the Real Time Transport Protocol (RTP) is able to avoid regenerating FEC packets by not performing any FEC coding operation on the packets unless it is flagged to indicate regeneration via an FEC (e.g., Reed-Solomon) coding is necessary. Absent the flag, the conference server updates the received FEC packet as per the RTP and transmits the packet to its ultimate destination. Such disclosed systems, methods and computer program products are independent of the nature of the media being protected and flexible enough to support a wide variety of FEC techniques.

公开(公告)号：EP2060104A1

公开(公告)日：2009-05-20

申请号：EP07814101.7

申请日：2007-08-15

Applicant: Microsoft Corporation

Inventor： BARKLEY, Warren V. ,  CHOU, Philip A. ,  CRINON, Regis J. ,  MOORE, Tim

IPC: H04M3/56 ,  H04N7/15

CPC classification number: H04N7/15 ,  H04L65/403 ,  H04N7/14 ,  H04N7/147 ,  H04N7/152 ,  H04N19/187

Abstract: Techniques for managing visual compositions for a multimedia conference call are described. An apparatus may comprise a processor to allocate a display object bit rate for multiple display objects where a total display object bit rate for all display objects is equal to or less than a total input bit rate, and decode video information from multiple video streams each having different video layers with different levels of spatial resolution, temporal resolution and quality for two or more display objects. Other embodiments are described and claimed.

公开(公告)号：EP2359596A1

公开(公告)日：2011-08-24

申请号：EP09835436.8

申请日：2009-11-09

Applicant: Microsoft Corporation

Inventor： LEE, Ming-Chieh ,  HAN, Mu ,  MOORE, Tim

IPC: H04N7/15 ,  H04N7/12

Abstract: 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.

公开(公告)号：EP2301210A2

公开(公告)日：2011-03-30

申请号：EP09798373.8

申请日：2009-05-15

Applicant: Microsoft Corporation

Inventor： YAHYAOUI, Wajih ,  MOORE, Tim ,  BELL, Tony ,  DEASON, Neil ,  ZHANG, Xianjie

IPC: H04L12/66

CPC classification number: H04L29/12528 ,  H04L29/12537 ,  H04L61/2575 ,  H04L61/2578 ,  H04L67/14

Abstract: Techniques to manage communications between relay servers are described. A system may include multiple relay servers each having an enhanced relay control module. The enhanced relay control module may be operative to manage communications between private clients communicating over the first relay server and the second relay server. The enhanced relay control module may establish a media channel between control ports for the first and second relay servers when a port range attribute for at least one of the first or second relay servers is turned off. Other embodiments are described and claimed.