知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

40 records (took 0.026 seconds)

    PRESERVING SYNCHRONIZED PLAYOUT OF AUXILIARY AUDIO TRANSMISSION
    11.
    发明申请
    PRESERVING SYNCHRONIZED PLAYOUT OF AUXILIARY AUDIO TRANSMISSION 审中-公开
    保留同步音频传输的同步播放

    公开(公告)号：US20140126653A1

    公开(公告)日：2014-05-08

    申请号：US14155081

    申请日：2014-01-14

    Applicant: Cisco Technology, Inc.

    Inventor： Ali C. Begen ,  Tankut Akgul ,  Michael A. Ramalho ,  David R. Oran ,  William C. Ver Steeg

    IPC: H04N5/04

    CPC classification number: H04N5/04 ,  G06F15/16 ,  H04N5/931 ,  H04N5/932 ,  H04N7/087 ,  H04N21/47202

    Abstract: In one method embodiment, providing a multiplex of compressed versions of a first video stream and a first audio stream, each corresponding to an audiovisual (A/V) program, the first video stream and the first audio stream each corresponding to a first playout rate and un-synchronized with each other for an initial playout portion; and providing a compressed version of a second audio stream, the second audio stream corresponding to a pitch-preserving, second playout rate different than the first playout rate, the second audio stream synchronized to the initial playout portion of the first video stream when the first video stream is played out at the second playout rate, the first audio stream replaceable by the second audio stream for the initial playout portion.

    Abstract translation: 在一个方法实施例中，提供第一视频流和第一音频流的压缩版本的多路复用，每个对应于视听（A / V）程序，第一视频流和第一音频流，每个对应于第一播放速率 并且对于初始播放部分彼此不同步; 以及提供第二音频流的压缩版本，所述第二音频流对应于与所述第一播放速率不同的音高保持的第二播放速率，所述第二音频流与所述第一视频流的初始播出部分同步，当所述第一音频流 视频流以第二播放速率播放，第一音频流可由用于初始播出部分的第二音频流替换。

    Retransmission-Based Stream Repair and Stream Join
    12.
    发明申请
    Retransmission-Based Stream Repair and Stream Join 审中-公开
    基于重传的流修复和流加入

    公开(公告)号：US20140029628A1

    公开(公告)日：2014-01-30

    申请号：US14045813

    申请日：2013-10-04

    Applicant: Cisco Technology, Inc.

    Inventor： David R. Oran

    IPC: H04L29/08

    CPC classification number: H04L29/08585 ,  H04L1/1607 ,  H04L29/12783 ,  H04L45/12 ,  H04L45/16 ,  H04L61/35 ,  H04L65/4076 ,  H04L65/608 ,  H04L65/80 ,  H04L69/326 ,  H04L2001/0093

    Abstract: The Real-time Transport Protocol (RTP) and its related standards define a retransmission packet format and a way to give feedback via Negative ACKnowledge (NACK) packets for data that has been lost. In one embodiment, a unicast RTP repair session is associated with a main Source Specific Multicast (SSM) multicast session. Real-time Transport Control Protocol (RTCP) NACK packets are then used for feedback to a SSM feedback target address. This dynamically instantiates unicast RTP repair for multicast sessions. The repair scheme can be used for repairing multicast channels or joining new multicast channels. In another embodiment, a media transmission device shares an IP address with one or more other media transmission devices. The shared IP address can also be used to route multiple identical multicast media streams to different media stream receivers.

    Abstract translation: 实时传输协议（RTP）及其相关标准定义了重传分组格式，并且通过负数确认（NACK）分组为丢失的数据提供反馈的方式。 在一个实施例中，单播RTP修复会话与主要源特定多播（SSM）多播会话相关联。 然后将实时传输控制协议（RTCP）NACK分组用于SSM反馈目标地址的反馈。 这可以动态实例化多播会话的单播RTP修复。 修复方案可用于修复组播信道或加入新的组播信道。 在另一个实施例中，媒体传输设备与一个或多个其他媒体传输设备共享IP地址。 共享IP地址也可以用于将多个相同的多播媒体流路由到不同的媒体流接收器。

    Technique for selecting a path computation element based on response time delay
    13.
    发明授权
    Technique for selecting a path computation element based on response time delay 有权

    公开(公告)号：US10721156B2

    公开(公告)日：2020-07-21

    申请号：US15660802

    申请日：2017-07-26

    Applicant: Cisco Technology, Inc.

    Inventor： Jean-Philippe Vasseur ,  David R. Oran

    IPC: H04L12/721 ,  H04L12/801 ,  H04L29/08 ,  H04L12/46 ,  H04L29/06

    Abstract: A technique efficiently selects a path computation element (PCE) to compute a path between nodes of a computer network. The PCE selection technique is illustratively based on dynamic advertisements of the PCE's available path computation resources, namely a predictive response time (PRT). To that end, the novel technique enables one or more PCEs to dynamically send (advertise) their available path computation resources to one or more path computation clients (PCCs). In addition, the technique enables the PCC to efficiently select a PCE (or set of PCEs) to service a path computation request based upon those available resources.

    Quality optimization with buffer and horizon constraints in adaptive streaming
    16.
    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。

    TECHNIQUE FOR SELECTING A PATH COMPUTATION ELEMENT BASED ON RESPONSE TIME DELAY
    17.
    发明申请
    TECHNIQUE FOR SELECTING A PATH COMPUTATION ELEMENT BASED ON RESPONSE TIME DELAY 有权
    基于响应时间延迟选择路径计算元素的技术

    公开(公告)号：US20150263933A1

    公开(公告)日：2015-09-17

    申请号：US14709347

    申请日：2015-05-11

    Applicant: Cisco Technology, Inc.

    Inventor： Jean-Philippe Vasseur ,  David R. Oran

    IPC: H04L12/721 ,  H04L29/08 ,  H04L29/06 ,  H04L12/801

    CPC classification number: H04L45/12 ,  H04L12/4633 ,  H04L47/10 ,  H04L47/12 ,  H04L67/104 ,  H04L67/1068 ,  H04L67/16 ,  H04L69/16

    Abstract: A technique efficiently selects a path computation element (PCE) to compute a path between nodes of a computer network. The PCE selection technique is illustratively based on dynamic advertisements of the PCE's available path computation resources, namely a predictive response time (PRT). To that end, the novel technique enables one or more PCEs to dynamically send (advertise) their available path computation resources to one or more path computation clients (PCCs). In addition, the technique enables the PCC to efficiently select a PCE (or set of PCEs) to service a path computation request based upon those available resources.

    Abstract translation: 一种技术有效地选择路径计算元件（PCE）来计算计算机网络的节点之间的路径。 PCE选择技术说明性地基于PCE可用路径计算资源的动态广告，即预测响应时间（PRT）。 为此，新技术使得一个或多个PCE能够将其可用路径计算资源动态地发送（通告）给一个或多个路径计算客户端（PCC）。 此外，该技术使得PCC能够基于这些可用资源有效地选择PCE（或一组PCE）来服务路径计算请求。

    Enhancing performance of rapid channel changes and other playback positioning changes in adaptive streaming
    18.
    发明授权
    Enhancing performance of rapid channel changes and other playback positioning changes in adaptive streaming 有权
    提高快速频道更改和自适应流媒体播放定位更改的性能

    公开(公告)号：US08953452B2

    公开(公告)日：2015-02-10

    申请号：US13895822

    申请日：2013-05-16

    Applicant: Cisco Technology, Inc.

    Inventor： Joshua B. Gahm ,  Eric Cunningham ,  Ali C. Begen ,  David R. Oran

    IPC: H04L1/00 ,  H04L12/917 ,  H04L12/865 ,  G06F15/16

    CPC classification number: H04L47/32 ,  H04L41/5025 ,  H04L47/263 ,  H04L47/30 ,  H04L47/38 ,  H04L47/6275 ,  H04L47/76 ,  H04L65/4084 ,  H04L65/80 ,  H04N21/47217

    Abstract: Content is received within a network by a content receiver based upon fetch requests by the content receiver to a content source, where the fetch requests for content are based upon a first adaptation logic scheme to fill a buffer of the content receiver at a selected rate and to download segments of content at selected encoding rates. A network priority is detected at the content receiver that includes an observed download rate at the content receiver that is greater than a fair share rate for other content receivers in the network. Fetch requests for content are revised in response to detection of the network priority, where the revised fetch requests are based upon a priority adaptation scheme that results in at least one of filling the buffer at a faster rate and downloading segments of content at higher encoding rates compared with the first adaptation logic scheme.

    Abstract translation: 基于内容接收器对内容源的提取请求，在内容中接收内容，其中内容的提取请求基于第一自适应逻辑方案，以选定的速率填充内容接收器的缓冲器，以及 以选定的编码速率下载内容片段。 在内容接收器处检测到网络优先级，其包括在内容接收器处观察到的下载速率大于网络中其他内容接收器的公平共享速率。 针对内容的提取请求被修改以响应于网络优先级的检测，其中修改的提取请求基于优先级适配方案，其导致以更快的速率填充缓冲器中的至少一个并且以更高的编码率下载内容段 与第一个适应逻辑方案相比。

    Quality Optimization with Buffer and Horizon Constraints in Adaptive Streaming
    19.
    发明申请
    Quality Optimization with Buffer and Horizon Constraints in Adaptive Streaming 有权
    自适应流中缓冲区和地平线约束的质量优化

    公开(公告)号：US20150023404A1

    公开(公告)日：2015-01-22

    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: H04N19/189 ,  H04N19/152

    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。

Patent Agency Ranking