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    Dynamic Programming Across Multiple Streams
    1.
    发明申请
    Dynamic Programming Across Multiple Streams 有权
    跨多个流的动态编程

    公开(公告)号：US20160112732A1

    公开(公告)日：2016-04-21

    申请号：US14519628

    申请日：2014-10-21

    Applicant: Cisco Technology Inc.

    Inventor： Zhi Li ,  Joshua B. Gahm ,  Xiaoqing Zhu

    IPC: H04N21/2343

    CPC classification number: H04N21/234381 ,  H04L47/25 ,  H04L65/602 ,  H04L65/605 ,  H04L65/80 ,  H04N21/23439 ,  H04N21/23805 ,  H04N21/2385 ,  H04N21/2662 ,  H04N21/64769 ,  H04N21/8456

    Abstract: Various implementations disclosed herein enable a more efficient allocation of one or more shared network resources (e.g., bandwidth, memory, processor time, etc.) amongst a number of client devices based on media content data complexity and client device resource constraints in order to better manage perceptual playback quality of adaptive streaming content. In some implementations, a method includes aligning sequences of one or more temporal segments; and, selecting segment representations for each temporal segment based on a combination of the sequence alignment and perceptual quality level values associated with available segment representations, such that a combination of resulting perceptual quality levels satisfies a joint quality criterion. Each sequence is associated with one of a number of client devices sharing a network resource. The one or more temporal segments of each sequence are used to provide segment representations of media content data to one of the client devices.

    Abstract translation: 基于媒体内容数据复杂性和客户机设备资源约束，本文公开的各种实施方式能够在多个客户端设备之间更有效地分配一个或多个共享网络资源（例如，带宽，存储器，处理器时间等），以便更好地 管理自适应流内容的感知回放质量。 在一些实施方式中，一种方法包括对准一个或多个时间段的序列; 以及基于与可用段表示相关联的序列比对和感知质量水平值的组合来选择每个时间段的段表示，使得所得感知质量等级的组合满足联合质量标准。 每个序列与共享网络资源的多个客户端设备之一相关联。 每个序列的一个或多个时间段被用于向一个客户端设备提供媒体内容数据的段表示。

    HTTP STREAMING CLIENT ADAPTATION ALGORITHM BASED ON PROPORTIONAL-INTEGRAL CONTROL
    3.
    发明申请
    HTTP STREAMING CLIENT ADAPTATION ALGORITHM BASED ON PROPORTIONAL-INTEGRAL CONTROL 有权
    基于比例整合控制的HTTP流客户端适配算法

    公开(公告)号：US20150067105A1

    公开(公告)日：2015-03-05

    申请号：US14012225

    申请日：2013-08-28

    Applicant: Cisco Technology, Inc.

    Inventor： Xiaoqing Zhu ,  Zhi Li ,  Rong Pan ,  Joshua B. Gahm ,  Hao Hu

    IPC: H04L29/06

    CPC classification number: H04L65/601 ,  H04L47/25 ,  H04L47/30 ,  H04L47/38 ,  H04L65/60 ,  H04L65/608 ,  H04L67/02

    Abstract: In one embodiment, an HTTP streaming session may be initiated at a client device in a network. The client device may have a buffer and may be configured to request and receive one or more data segments over HTTP from an HTTP server. A first data segment at a first data source rate may be requested and subsequently received. The first data segment may be stored in the buffer. A second data source rate may then be calculated based on a storage level in the buffer, and a second data segment at the second data source rate may be requested.

    Abstract translation: 在一个实施例中，可以在网络中的客户端设备处发起HTTP流传输会话。 客户端设备可以具有缓冲器，并且可以被配置为通过HTTP从HTTP服务器请求和接收一个或多个数据段。 可以请求并随后接收第一数据源速率的第一数据段。 第一数据段可以存储在缓冲器中。 然后可以基于缓冲器中的存储级别来计算第二数据源速率，并且可以请求具有第二数据源速率的第二数据段。

    HTTP streaming client adaptation algorithm based on proportional-integral control
    4.
    发明授权
    HTTP streaming client adaptation algorithm based on proportional-integral control 有权
    基于比例积分控制的HTTP流客户端适配算法

    公开(公告)号：US09485289B2

    公开(公告)日：2016-11-01

    申请号：US14012225

    申请日：2013-08-28

    Applicant: Cisco Technology, Inc.

    Inventor： Xiaoqing Zhu ,  Zhi Li ,  Rong Pan ,  Joshua B. Gahm ,  Hao Hu

    IPC: G06F15/16 ,  H04L29/06 ,  H04L12/811 ,  H04L12/825 ,  H04L12/835

    CPC classification number: H04L65/601 ,  H04L47/25 ,  H04L47/30 ,  H04L47/38 ,  H04L65/60 ,  H04L65/608 ,  H04L67/02

    Abstract: In one embodiment, an HTTP streaming session may be initiated at a client device in a network. The client device may have a buffer and may be configured to request and receive one or more data segments over HTTP from an HTTP server. A first data segment at a first data source rate may be requested and subsequently received. The first data segment may be stored in the buffer. A second data source rate may then be calculated based on a storage level in the buffer, and a second data segment at the second data source rate may be requested.

    Abstract translation: 在一个实施例中，可以在网络中的客户端设备处发起HTTP流传输会话。 客户端设备可以具有缓冲器，并且可以被配置为通过HTTP从HTTP服务器请求和接收一个或多个数据段。 可以请求并随后接收第一数据源速率的第一数据段。 第一数据段可以存储在缓冲器中。 然后可以基于缓冲器中的存储级别来计算第二数据源速率，并且可以请求第二数据源速率的第二数据段。

    Resolution Robust Video Quality Metric
    5.
    发明申请
    Resolution Robust Video Quality Metric 有权
    分辨率可靠的视频质量指标

    公开(公告)号：US20160021380A1

    公开(公告)日：2016-01-21

    申请号：US14336246

    申请日：2014-07-21

    Applicant: Cisco Technology Inc.

    Inventor： Zhi Li ,  Josh Gahm

    IPC: H04N19/36 ,  H04N19/86

    CPC classification number: H04N19/36 ,  H04N17/004 ,  H04N19/154 ,  H04N19/86

    Abstract: In one embodiment, a video processing system includes a processor to read a mapping between a peak signal to noise ratio, PSNR, and a video quality metric, M, for an encoded version of a first video portion encoded at full resolution Rmax, read an up-sampled peak signal to noise ratio, uPSNR(Rx) of an up-sampled decoded video portion deriving from the first video portion being encoded at a resolution Rx, which is less than the full resolution Rmax, yielding an encoded video portion, the encoded video portion being decoded and then up-sampled to the full resolution Rmax; and lookup a value, V′, that maps to uPSNR(Rx) in the mapping, V′ representing a resolution normalized M value of the encoded video portion encoded at the resolution Rx. Related apparatus and methods are also described.

    Abstract translation: 在一个实施例中，视频处理系统包括处理器，用于读取在全分辨率Rmax编码的第一视频部分的编码版本的峰值信噪比PSNR和视频质量度量M之间的映射，读取 上采样的峰值信噪比，从第一视频部分导出的上采样解码视频部分的uPSNR（Rx）以小于全分辨率Rmax的分辨率Rx进行编码，产生编码视频部分， 编码视频部分被解码，然后被上采样到全分辨率Rmax; 并且在映射中查找映射到uPSNR（Rx）的值V'，V'表示在分辨率Rx处编码的编码视频部分的分辨率归一化的M值。 还描述了相关装置和方法。

    HTTP STREAMING CLIENT ADAPTATION ALGORITHM BASED ON PROPORTIONAL-INTEGRAL CONTROL
    8.
    发明申请
    HTTP STREAMING CLIENT ADAPTATION ALGORITHM BASED ON PROPORTIONAL-INTEGRAL CONTROL 审中-公开
    基于比例整合控制的HTTP流客户端适配算法

    公开(公告)号：US20170013041A1

    公开(公告)日：2017-01-12

    申请号：US15275714

    申请日：2016-09-26

    Applicant: Cisco Technology, Inc.

    Inventor： Xiaoqing Zhu ,  Zhi Li ,  Rong Pan ,  Joshua B. Gahm ,  Hao Hu

    IPC: H04L29/06 ,  H04L12/825 ,  H04L12/835 ,  H04L29/08

    CPC classification number: H04L65/601 ,  H04L47/25 ,  H04L47/30 ,  H04L47/38 ,  H04L65/60 ,  H04L65/608 ,  H04L67/02

    Abstract: In one embodiment, an HTTP streaming session may be initiated at a client device in a network. The client device may have a buffer and may be configured to request and receive one or more data segments over HTTP from an HTTP server. A first data segment at a first data source rate may be requested and subsequently received. The first data segment may be stored in the buffer. A second data source rate may then be calculated based on a storage level in the buffer, and a second data segment at the second data source rate may be requested.

    Abstract translation: 在一个实施例中，可以在网络中的客户端设备处发起HTTP流传输会话。 客户端设备可以具有缓冲器，并且可以被配置为通过HTTP从HTTP服务器请求和接收一个或多个数据段。 可以请求并随后接收第一数据源速率的第一数据段。 第一数据段可以存储在缓冲器中。 然后可以基于缓冲器中的存储级别来计算第二数据源速率，并且可以请求具有第二数据源速率的第二数据段。

    Quality optimization with buffer and horizon constraints in adaptive streaming
    9.
    发明授权
    Quality optimization with buffer and horizon constraints in adaptive streaming 有权
    自适应流中具有缓冲区和水平约束的质量优化

    公开(公告)号：US09386308B2

    公开(公告)日：2016-07-05

    申请号：US13943445

    申请日：2013-07-16

    Applicant: Cisco Technology, Inc.

    Inventor： Zhi Li ,  Ali C. Begen ,  Joshua B. Gahm ,  Bruce P. Osler ,  David R. Oran

    IPC: H04N7/12 ,  H04N19/189 ,  H04N19/152 ,  H04L29/06

    CPC classification number: H04N19/189 ,  H04L65/4084 ,  H04L65/80 ,  H04N19/152

    Abstract: Techniques are provided for optimizing quality in adaptive streaming, where information is obtained relating to encoding bitrates and content quality scores for content segments of a content stream. The content segments of the content stream are provided by a content server and downloaded by a computing device. For each content segment, an encoding bitrate is determined for downloading the content segment from the content server, where determining the encoding bitrate for a current content segment is based upon an estimated current network bandwidth, constraints of a buffer into which downloaded content segments are stored, and also upon quality scores associated with content segments within a selected horizon extending from the current content segment to a future content segment in the content stream at an endpoint of the horizon. Each content segment with the determined bitrate for the content segment is downloaded from the content server.

    Abstract translation: 提供了用于优化自适应流中的质量的技术，其中获得与内容流的内容段的编码比特率和内容质量得分有关的信息。 内容流的内容片段由内容服务器提供并由计算设备下载。 对于每个内容段，确定用于从内容服务器下载内容片段的编码比特率，其中确定当前内容片段的编码比特率是基于估计的当前网络带宽，存储下载的内容片段的缓冲器的约束 以及与在当前视域内的内容片段中的内容片段相关联的质量分数，其从当前内容片段延伸到视频端点处的内容流中的未来内容片段。 从内容服务器下载具有内容片段的确定的比特率的每个内容片段。

    NETWORK-BASED ADAPTIVE RATE LIMITING
    10.
    发明申请
    NETWORK-BASED ADAPTIVE RATE LIMITING 有权
    基于网络的自适应速率限制

    公开(公告)号：US20150074285A1

    公开(公告)日：2015-03-12

    申请号：US14024210

    申请日：2013-09-11

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： Joshua B. Gahm ,  Aimin Ding ,  Rong Pan ,  Zhi Li

    IPC: H04L29/06

    CPC classification number: H04L65/601 ,  H04L47/11

    Abstract: An apparatus can include a session rate limit calculator and a rate limiter. The session rate limit calculator can be configured to compute a session rate limit for a given session of a plurality of active streaming media sessions based on state information for the given session and state information for a downstream bottleneck link to which the apparatus feeds the plurality of active streaming media sessions. The rate limiter can be configured to control downstream traffic for the given session based on the computed session rate limit and to provide corresponding rate-limited downstream traffic for the given session.

    Abstract translation: 装置可以包括会话速率限制计算器和速率限制器。 会话速率限制计算器可以被配置为基于给定会话的状态信息来计算多个活动流媒体会话的给定会话的会话速率限制，以及用于下一个瓶颈链路的状态信息，该设备将多个 主动流媒体会话。 速率限制器可以被配置为基于计算的会话速率限制来控制给定会话的下行流量，并且为给定会话提供对应的速率受限的下行流量。

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