公开(公告)号：US20080069127A1

公开(公告)日：2008-03-20

申请号：US11522268

申请日：2006-09-15

申请人： Hosam A. Khalil ,  Guo-Wei Shieh ,  Tian Wang

发明人： Hosam A. Khalil ,  Guo-Wei Shieh ,  Tian Wang

IPC分类号： H04L12/56 ,  H04J3/06

CPC分类号： H04J3/062 ,  H04J3/0626 ,  H04J3/0632 ,  H04L47/283 ,  H04L47/30

摘要： A method of compensating for jitter in a packet stream is described. The method comprises placing undecoded frames extracted from packets in the packet stream into a jitter buffer while decoding frames from the jitter buffer and placing the decoded frames into a sample buffer at a rate determined using an average playout delay. The average playout delay is the running average of the playout delay calculated for each packet as each packet becomes available. The playout delay for each packet is the sum of a sample buffer delay and a jitter buffer delay. As each packet is received, the average playout delay is adjusted based on a comparison of the playout delay associated with the received packet to the current average playout delay.

摘要翻译： 描述了补偿分组流中的抖动的方法。 该方法包括将从分组流中的分组提取的未解码的帧放入抖动缓冲器中，同时从抖动缓冲器解码帧并将解码的帧以使用平均播出延迟确定的速率放置到采样缓冲器中。 平均播出延迟是每个分组变得可用时为每个分组计算的播出延迟的运行平均值。 每个数据包的播出延迟是采样缓冲区延迟和抖动缓冲区延迟的总和。 当接收到每个分组时，基于与接收分组相关联的播放延迟与当前平均播放延迟的比较来调整平均播出延迟。

公开(公告)号：US08483243B2

公开(公告)日：2013-07-09

申请号：US11522268

申请日：2006-09-15

申请人： Hosam A Khalil ,  Guo-Wei Shieh ,  Tian Wang

发明人： Hosam A Khalil ,  Guo-Wei Shieh ,  Tian Wang

IPC分类号： H04L12/28 ,  H04J3/06

CPC分类号： H04J3/062 ,  H04J3/0626 ,  H04J3/0632 ,  H04L47/283 ,  H04L47/30

摘要： A method of compensating for jitter in a packet stream is described. The method comprises placing undecoded frames extracted from packets in the packet stream into a jitter buffer while decoding frames from the jitter buffer and placing the decoded frames into a sample buffer at a rate determined using an average playout delay. The average playout delay is the running average of the playout delay calculated for each packet as each packet becomes available. The playout delay for each packet is the sum of a sample buffer delay and a jitter buffer delay. As each packet is received, the average playout delay is adjusted based on a comparison of the playout delay associated with the received packet to the current average playout delay.

摘要翻译： 描述了补偿分组流中的抖动的方法。 该方法包括将从分组流中的分组提取的未解码的帧放入抖动缓冲器中，同时从抖动缓冲器解码帧并将解码的帧以使用平均播出延迟确定的速率放置到采样缓冲器中。 平均播出延迟是每个分组变得可用时为每个分组计算的播出延迟的运行平均值。 每个数据包的播出延迟是采样缓冲区延迟和抖动缓冲区延迟的总和。 当接收到每个分组时，基于与接收分组相关联的播放延迟与当前平均播放延迟的比较来调整平均播出延迟。

公开(公告)号：US08005670B2

公开(公告)日：2011-08-23

申请号：US11873707

申请日：2007-10-17

申请人： Hosam A. Khalil ,  Guo-Wei Shieh

发明人： Hosam A. Khalil ,  Guo-Wei Shieh

IPC分类号： G10L21/02 ,  G10L19/00

CPC分类号： G10L19/005

摘要： To reduce audio glitch rendering buffer of an audio application is pre-filled with natural sounding audio rather than zeros. For every frame of audio sent for rendering, the rendering buffer is also pre-filled or the signal is stretched in the buffer in anticipation of a glitch. If the glitch does not occur, then the stretched signal is overwritten and the end user does not notice it. If the glitch does occur, then the rendering buffer is already filled with a stretched version of the previous audio and may result in sound that is acceptable. After recovery from the glitch, any new data is smoothly merged into the fake audio that was generated before.

摘要翻译： 为了减少音频应用程序的音频毛刺渲染缓冲区，预先填充了自然的声音音频而不是零。 对于发送用于渲染的每个音频帧，渲染缓冲区也是预填充的，或者信号在缓冲区中被延伸以预期出现故障。 如果没有发生毛刺，则被拉伸的信号被覆盖，最终用户没有注意到。 如果发生毛刺，则渲染缓冲区已经填充了先前音频的拉伸版本，并且可能导致可接受的声音。 从故障恢复后，任何新的数据都会平滑地合并到之前生成的假音频中。

公开(公告)号：US20090106020A1

公开(公告)日：2009-04-23

申请号：US11873707

申请日：2007-10-17

申请人： Hosam A. Khalil ,  Guo-Wei Shieh

发明人： Hosam A. Khalil ,  Guo-Wei Shieh

IPC分类号： G10L11/02

CPC分类号： G10L19/005

摘要： To reduce audio glitch rendering buffer of an audio application is pre-filled with natural sounding audio rather than zeros. For every frame of audio sent for rendering, the rendering buffer is also pre-filled or the signal is stretched in the buffer in anticipation of a glitch. If the glitch does not occur, then the stretched signal is overwritten and the end user does not notice it. If the glitch does occur, then the rendering buffer is already filled with a stretched version of the previous audio and may result in sound that is acceptable. After recovery from the glitch, any new data is smoothly merged into the fake audio that was generated before.

摘要翻译： 为了减少音频应用程序的音频毛刺渲染缓冲区，预先填充了自然的声音音频而不是零。 对于发送用于渲染的每个音频帧，渲染缓冲区也是预填充的，或者信号在缓冲区中被延伸以预期出现故障。 如果没有发生毛刺，则被拉伸的信号被覆盖，最终用户没有注意到。 如果发生毛刺，则渲染缓冲区已经填充了先前音频的拉伸版本，并且可能导致可接受的声音。 从故障恢复后，任何新的数据都会平滑地合并到之前生成的假音频中。

公开(公告)号：US08441930B2

公开(公告)日：2013-05-14

申请号：US12643433

申请日：2009-12-21

申请人： Jin Li ,  Humayun Mukhtar Khan ,  Guo-Wei Shieh ,  Manish Jain

发明人： Jin Li ,  Humayun Mukhtar Khan ,  Guo-Wei Shieh ,  Manish Jain

IPC分类号： H04J3/14

CPC分类号： H04L43/0882 ,  H04L41/147 ,  H04L43/12

摘要： Embodiments are configured to provide communication features, including providing channel condition estimates for a communication path, such as packet loss, jitter, and/or available bandwidth, but are not so limited. In an embodiment, a method uses aspects of in-band data packets to provide channel condition estimates. In one embodiment, a system includes a bandwidth estimation component that operates to classify payload packets as part of performing capacity estimation and available bandwidth estimation operations.

摘要翻译： 实施例被配置为提供通信特征，包括为诸如分组丢失，抖动和/或可用带宽的通信路径提供信道状况估计，但不限于此。 在一个实施例中，一种方法使用带内数据分组的方面来提供信道条件估计。 在一个实施例中，系统包括带宽估计组件，其操作以将有效载荷分组分类为执行容量估计和可用带宽估计操作的一部分。

公开(公告)号：US07603669B2

公开(公告)日：2009-10-13

申请号：US11236313

申请日：2005-09-27

申请人： Pavel Curtis ,  Robert Schumaker ,  David A. Nichols ,  Eshwar Somashekar ,  Guo-Wei Shieh ,  Puja Gomber

发明人： Pavel Curtis ,  Robert Schumaker ,  David A. Nichols ,  Eshwar Somashekar ,  Guo-Wei Shieh ,  Puja Gomber

IPC分类号： G06F9/445 ,  G06F12/00

CPC分类号： G06F8/65 ,  Y10S707/99953 ,  Y10S707/99954

摘要： Techniques for upgrading and/or downgrading a data resource deployed on a machine from one version to another version are provided. An application component that defines the data resource may provide an up/down tool for use in changing the data resource component from one version to another version. The up/down tool comprises an up/down process and one or more version conversion rules. The up/down process utilizes the provided version conversion rules to determine the ability of the up/down tool to deploy the data resource and to actually deploy the data resource.

摘要翻译： 提供了用于将部署在机器上的数据资源从一个版本升级和/或降级到另一个版本的技术。 定义数据资源的应用程序组件可以提供用于将数据资源组件从一个版本改变到另一个版本的上/下工具。 上/下工具包括上/下程序和一个或多个版本转换规则。 上/下程序利用提供的版本转换规则来确定上/下工具部署数据资源和实际部署数据资源的能力。

公开(公告)号：US20100238789A1

公开(公告)日：2010-09-23

申请号：US12406114

申请日：2009-03-18

申请人： Jingyu Qiu ,  Shiwei Wang ,  Regis J. Crinon ,  Guo-Wei Shieh

发明人： Jingyu Qiu ,  Shiwei Wang ,  Regis J. Crinon ,  Guo-Wei Shieh

IPC分类号： H04J1/16 ,  H04N7/12

CPC分类号： H04L1/0009 ,  H04L1/1877 ,  H04N21/23106 ,  H04N21/23116 ,  H04N21/44209 ,  H04N21/6375

摘要： Architecture for enabling a communications endpoint to quickly recover from a packet loss, reducing duration of a signal dropout. A communications component sends a downlink of dependency-structured signals, such as audio and/or video signals using compressed frames between key frames. A multipoint control component (MCC) is located between the communications component and multiple endpoints, and distributes the downlink to the multiple endpoints. A frame caching component caches a key frame of the downlink. If a key frame is lost at one of the endpoints, the endpoint sends a packet loss report to the frame caching component. The key frame is resent from the frame caching component to the endpoint in response to the key frame loss. In this way, the frame caching component can respond to specific frame loss situations on any of the endpoints, without interfering with the performance on the other endpoints.

摘要翻译： 用于使通信端点快速从分组丢失恢复的架构，减少信号丢失的持续时间。 通信组件使用压缩帧在关键帧之间发送依赖结构信号的下行链路，例如音频和/或视频信号。 多点控制组件（MCC）位于通信组件和多个端点之间，并将下行链路分配给多个端点。 帧高速缓存组件缓存下行链路的关键帧。 如果某个端点的关键帧丢失，则端点会向帧高速缓存组件发送丢包报告。 响应于关键帧丢失，关键帧从帧缓存组件重新发送到端点。 以这种方式，帧高速缓存组件可以响应任何端点上的特定帧丢失情况，而不会干扰其他端点的性能。

公开(公告)号：US20090196338A1

公开(公告)日：2009-08-06

申请号：US12026534

申请日：2008-02-05

申请人： Walid Ali ,  Shankar Regunathan ,  Guo-Wei Shieh ,  Bruce Lin ,  Bharath Siravara ,  Ce Wang

发明人： Walid Ali ,  Shankar Regunathan ,  Guo-Wei Shieh ,  Bruce Lin ,  Bharath Siravara ,  Ce Wang

IPC分类号： H04B1/66

CPC分类号： H04N19/85

摘要： Architecture for enhancing the compression (e.g., luma, chroma) of a video signal and improving the perceptual quality of the video compression schemes. The architecture operates to reshape the normal multimodal energy distribution of the input video signal to a new energy distribution. In the context of luma, the algorithm maps the black and white (or contrast) information of a picture to a new energy distribution. For example, the contrast can be enhanced in the middle range of the luma spectrum, thereby improving the contrast between a light foreground object and a dark background. At the same time, the algorithm reduces the bit-rate requirements at a particular quantization step size. The algorithm can be utilized also in post-processing to improve the quality of decoded video.

摘要翻译： 用于增强视频信号的压缩（例如，亮度，色度）并提高视频压缩方案的感知质量的体系结构。 该架构用于将输入视频信号的正常多模态能量分布重新形成新的能量分布。 在亮度的上下文中，该算法将图像的黑白（或对比）信息映射到新的能量分布。 例如，可以在亮度光谱的中间范围内增强对比度，从而改善光前景物体和暗背景之间的对比度。 同时，该算法降低了特定量化步长的比特率要求。 该算法也可用于后处理，以提高解码视频的质量。

公开(公告)号：US20070074203A1

公开(公告)日：2007-03-29

申请号：US11236203

申请日：2005-09-27

申请人： Pavel Curtis ,  Robert Schumaker ,  David Nichols ,  Eshwar Somashekar ,  Guo-Wei Shieh ,  Puja Gomber

发明人： Pavel Curtis ,  Robert Schumaker ,  David Nichols ,  Eshwar Somashekar ,  Guo-Wei Shieh ,  Puja Gomber

IPC分类号： G06F9/445 ,  G06F9/44

CPC分类号： G06F8/65

摘要： Techniques for deploying, maintaining and configuring complex hardware and software systems are provided. An abstract configuration of the system describes the system's desired state. Each component of the system declares the general form of the resources it requires and an abstract representation of the versions of the services it both requires and provides. A configuration process uses the abstract configuration of the system and the descriptions of each of the components in the system to validate that the system can operate effectively, ensures that each component is in the correct state and at the right version, and generates the necessary interconnections for the application components to interoperate with each other.

摘要翻译： 提供了部署，维护和配置复杂硬件和软件系统的技术。 系统的抽象配置描述了系统的所需状态。 系统的每个组件都声明其所需资源的一般形式，以及它们所要求和提供的服务版本的抽象表示。 配置过程使用系统的抽象配置和系统中每个组件的描述来验证系统是否能够有效地运行，确保每个组件处于正确的状态和正确的版本，并产生必要的互连 使应用程序组件彼此互操作。

公开(公告)号：US07957307B2

公开(公告)日：2011-06-07

申请号：US11686198

申请日：2007-03-14

申请人： Jingyu Qiu ,  Timothy M. Moore ,  Guo-Wei Shieh ,  Zong Zong Yuan ,  Regis Crinon ,  Arvind Jayasundar

发明人： Jingyu Qiu ,  Timothy M. Moore ,  Guo-Wei Shieh ,  Zong Zong Yuan ,  Regis Crinon ,  Arvind Jayasundar

IPC分类号： H04L12/26 ,  H04L1/18 ,  H03M13/00

CPC分类号： H04L1/0009 ,  H04L1/007 ,  H04N19/65 ,  H04N19/89

摘要： An error correction system determines a level of error correction protection to apply to a frame of video data to be transmitted by a sending endpoint to a receiving endpoint based on the predicted impact of packet loss as well as the importance of the frame based on inter-frame dependencies, frame size, packet loss probability, historical packet loss pattern, central processing unit (CPU) load, and available network bandwidth. At the receiving endpoint, when packet loss is detected for a particular frame, the receiving endpoint will attempt to recover the frame using protection packets received along with the video data.

摘要翻译： 错误校正系统基于预测的分组丢失的影响以及基于帧间间隔的帧的重要性来确定应用于要由发送端点发送到接收端点的视频数据帧的纠错保护级别， 帧依赖性，帧大小，丢包概率，历史丢包模式，中央处理单元（CPU）负载和可用网络带宽。 在接收端点，当检测到特定帧的分组丢失时，接收端点将尝试使用与视频数据一起接收的保护分组来恢复帧。