公开(公告)号：US07869377B2

公开(公告)日：2011-01-11

申请号：US11426492

申请日：2006-06-26

申请人： Alan Douglas Clark

发明人： Alan Douglas Clark

IPC分类号： G01R31/08

CPC分类号： H04L1/20 ,  H04B17/00 ,  H04B17/309 ,  H04L41/147 ,  H04L41/5067 ,  H04L41/5087 ,  H04L41/509 ,  H04L43/00 ,  H04L43/0852 ,  H04L43/087 ,  H04L43/16 ,  H04L43/50 ,  H04W24/00

摘要： A method for estimating a subjective quality of a signal carried over a transmission path. The transmission path is monitored at periodic intervals. For each of the periodic intervals, at least one impairment factor is measured, an estimated effect of each of the impairment factors is determined using at least one value, and an estimated subjective quality of the signal is determined using the estimated effect of each of the impairment factors. Further, an estimated combined subjective quality of the signal is determined using the estimated subjective quality for at least two of the periodic intervals.

摘要翻译： 一种用于估计传输路径承载的信号的主观质量的方法。 以周期性的间隔监视传输路径。 对于每个周期性间隔，测量至少一个减值因子，使用至少一个值确定每个损害因子的估计效果，并且使用每个的估计效果来确定信号的估计主观质量 损伤因素 此外，使用估计的周期性间隔中的两个的主观质量来确定信号的估计组合主观质量。

公开(公告)号：US07808915B2

公开(公告)日：2010-10-05

申请号：US10821401

申请日：2004-04-09

申请人： Alan D. Clark

发明人： Alan D. Clark

IPC分类号： H04J1/16

CPC分类号： H04L41/0677 ,  H04L41/065 ,  H04L41/5087 ,  H04L41/509 ,  H04L43/0829 ,  H04L43/0852 ,  H04L43/087 ,  H04L43/106 ,  H04L43/16 ,  H04L45/00

摘要： A network monitoring system for packet based multimedia signal transmission systems which identifies network problems that may affect multimedia performance and provides guidance as to the location of such problems within the network.

摘要翻译： 一种用于基于分组的多媒体信号传输系统的网络监控系统，其识别可能影响多媒体性能的网络问题，并提供关于网络内的这些问题的位置的指导。

公开(公告)号：US08514928B2

公开(公告)日：2013-08-20

申请号：US13314450

申请日：2011-12-08

申请人： Alan Clark

发明人： Alan Clark

IPC分类号： H04N7/12

CPC分类号： H04L43/0829 ,  H04L65/4076 ,  H04L65/80

摘要： A method and system for the estimation of the effect of packet loss on a viewer's subjective perception of a packet video stream. The method involves estimating a quality metric for every frame in the video stream, accumulating such metrics over time, and transforming the result into a Mean Opinion Score (“MOS”) which represents the viewer's subjective perception of the video stream. The method takes into account various factors such as frame rate, frame types and sizes, decoding algorithms, propagated error rates, and the effect of video content on viewer perception. The method can be used for both encrypted and unencrypted video streams.

摘要翻译： 一种用于估计分组丢失对观看者对分组视频​​流的主观感知的影响的方法和系统。 该方法包括估计视频流中每帧的质量度量，随着时间积累这些度量，并将结果转换成代表观看者对视频流的主观感知的平均意见得分（“MOS”）。 该方法考虑了帧率，帧类型和大小，解码算法，传播错误率以及视频内容对观众感知的影响等各种因素。 该方法可用于加密和未加密的视频流。

公开(公告)号：US08094713B2

公开(公告)日：2012-01-10

申请号：US12174279

申请日：2008-07-16

申请人： Alan Clark

发明人： Alan Clark

IPC分类号： H04N7/12

CPC分类号： H04L43/0829 ,  H04L65/4076 ,  H04L65/80

摘要： A method and system for the estimation of the effect of packet loss on a viewer's subjective perception of a packet video stream. The method involves estimating a quality metric for every frame in the video stream, accumulating such metrics over time, and transforming the result into a Mean Opinion Score (“MOS”) which represents the viewer's subjective perception of the video stream. The method takes into account various factors such as frame rate, frame types and sizes, decoding algorithms, propagated error rates, and the effect of video content on viewer perception. The method can be used for both encrypted and unencrypted video streams.

摘要翻译： 一种用于估计分组丢失对观看者对分组视频​​流的主观感知的影响的方法和系统。 该方法包括估计视频流中每帧的质量度量，随着时间积累这些度量，并将结果转换成代表观看者对视频流的主观感知的平均意见得分（“MOS”）。 该方法考虑了帧率，帧类型和大小，解码算法，传播错误率以及视频内容对观众感知的影响等各种因素。 该方法可用于加密和未加密的视频流。

公开(公告)号：US07848243B2

公开(公告)日：2010-12-07

申请号：US12018607

申请日：2008-01-23

申请人： Alan D. Clark

发明人： Alan D. Clark

IPC分类号： G06F11/00

CPC分类号： H04L43/08 ,  H04L41/5003 ,  H04L41/5038 ,  H04L41/5087 ,  H04M3/2227 ,  H04M7/006

摘要： A system and method for providing service quality metrics related to the quality of service provided by a Voice over Internet Protocol (“VoIP”) network to voiceband modems or fax machines communicating over the VoIP network. The system utilizes a multi-state Markov model to evaluate the quality of service provided by the VoIP network and provides an assessment of the suitability of the network to carry voiceband data traffic.

摘要翻译： 一种用于向通过VoIP网络通信的语音频带调制解调器或传真机提供与因特网协议语音（“VoIP”）网络提供的服务质量相关的服务质量度量的系统和方法。 该系统利用多状态马尔可夫模型来评估VoIP网络提供的服务质量，并提供对网络携带话音带数据流量的适用性的评估。

公开(公告)号：US07710879B2

公开(公告)日：2010-05-04

申请号：US11313220

申请日：2005-12-19

申请人： Alan D. Clark

发明人： Alan D. Clark

IPC分类号： G01R31/08

CPC分类号： H04L65/80 ,  H04L29/06027 ,  H04L43/00 ,  H04L43/06 ,  H04L43/0829 ,  H04L43/0852 ,  H04L43/087 ,  H04L43/16 ,  H04L45/00 ,  H04L45/22 ,  H04L45/26 ,  H04L45/28 ,  H04L45/3065 ,  H04L45/70 ,  H04L47/10 ,  H04L47/11 ,  H04L47/122 ,  H04L47/127 ,  H04L47/2416 ,  H04L47/26 ,  H04L65/608

摘要： The present invention provides a system and method for improving the quality of real-time multimedia sessions wherein each endpoint of a real-time packet stream transmits (1) feedback reports that describe the quality of the stream received by the endpoint and (2) forward reports that are based on the feedback reports received by the endpoint and that describe the quality of the stream received by the other, remote endpoint. The forward reports are used by routers to re-route packets around problems in the network that are located between the router and the remote endpoint.

摘要翻译： 本发明提供了一种用于提高实时多媒体会话质量的系统和方法，其中实时分组流的每个端点传输（1）描述由端点接收的流的质量的反馈报告，以及（2）前向 基于由端点接收到的反馈报告并且描述由另一个远程端点接收的流的质量的报告。 路由器使用转发报告来重新路由数据包围绕位于路由器和远程端点之间的网络中的问题。

公开(公告)号：US07684324B2

公开(公告)日：2010-03-23

申请号：US11314720

申请日：2005-12-20

申请人： Alan D. Clark

发明人： Alan D. Clark

IPC分类号： H04L12/26

CPC分类号： H04N21/4363 ,  H04L29/06027 ,  H04L47/10 ,  H04L47/2416 ,  H04L47/2433 ,  H04L47/2458 ,  H04L47/283 ,  H04L47/50 ,  H04L47/564 ,  H04L65/80 ,  H04N21/2381 ,  H04N21/4381

摘要： The present invention provides a system and method for prioritizing delay-sensitive packets relative to each other for transmission from a router in a network, based on a delay variation estimated for each delay-sensitive packet by a quality of service monitor. In accordance with the present invention, late delay-sensitive packets are assigned a higher priority than, and are transmitted before, other delay-sensitive packets, thereby reducing the level of jitter and improving the quality of the packet streams that comprise late delay-sensitive packets.

摘要翻译： 本发明提供一种系统和方法，用于根据由服务质量监视器为每个延迟敏感分组估计的延迟变化，相对于彼此优先处理来自网络中的路由器的传输的延迟敏感分组的系统和方法。 根据本发明，延迟敏感分组的分配比其他延迟敏感分组具有更高的优先级，并且被传送给其它延迟敏感分组，从而降低抖动的水平并提高包含延迟敏感的分组流的质量 数据包

公开(公告)号：US07058048B2

公开(公告)日：2006-06-06

申请号：US10802536

申请日：2004-03-17

申请人： Alan Douglas Clark

发明人： Alan Douglas Clark

IPC分类号： H04L12/66 ,  H04L12/28

CPC分类号： H04L65/1026 ,  G10L25/69 ,  H04L29/06027 ,  H04L41/142 ,  H04L41/5003 ,  H04L41/5087 ,  H04L43/0835 ,  H04L43/0858 ,  H04L43/087 ,  H04L43/12 ,  H04L43/16 ,  H04L47/10 ,  H04L47/24 ,  H04L65/1036 ,  H04L65/1069 ,  H04L65/605 ,  H04L65/80 ,  H04M3/2227 ,  H04M3/2236 ,  H04M7/006

摘要： A subjective quality monitoring system for packet based multimedia signal transmission systems which determines, during more than one interval of a single call, the level of one or more impairments and determines the effect of said one or more impairments on the estimated subjective quality of said multimedia signal. The quality monitoring system comprises a plurality of quality monitoring functions located at the multimedia to packet conversion points.

摘要翻译： 一种用于基于分组的多媒体信号传输系统的主观质量监测系统，其在单个呼叫的多于一个间隔期间确定一个或多个损伤的水平，并且确定所述一个或多个损伤对所述多媒体的估计主观质量的影响 信号。 质量监测系统包括位于多媒体到分组转换点的多个质量监测功能。