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    Error correction coding for recovering multiple packets in a group view of limited bandwidth
    1.
    发明授权
    Error correction coding for recovering multiple packets in a group view of limited bandwidth 有权
    用于在有限带宽的组视图中恢复多个分组的纠错编码

    公开(公告)号：US08397140B2

    公开(公告)日：2013-03-12

    申请号：US12794613

    申请日：2010-06-04

    申请人： Xiaosong Zhou ,  Hyeonkuk Jeong ,  Yan Yang ,  Dazhong Zhang ,  Hsi-Jung Wu

    发明人： Xiaosong Zhou ,  Hyeonkuk Jeong ,  Yan Yang ,  Dazhong Zhang ,  Hsi-Jung Wu

    IPC分类号： H03M13/00

    CPC分类号： H03M13/05 ,  H03M13/1102 ,  H03M13/1515 ,  H03M13/152 ,  H03M13/27 ,  H03M13/29 ,  H03M13/2957 ,  H03M13/373 ,  H03M13/3746 ,  H04L1/005 ,  H04L1/0057 ,  H04L1/008

    摘要： Coded video data may be transmitted between an encoder and a decoder using multiple FEC codes and/or packets for error detection and correction. Only a subset of the FEC packets need be transmitted between the encoder and decoder. The FEC packets of each FEC group may take, as inputs, data packets of a current FEC group and also an untransmitted FEC packet of a preceding FEC group. Due to relationships among the FEC packets, when transmission errors arise and data packets are lost, there remain opportunities for a decoder to recover lost data packets from earlier-received FEC groups when later-received FEC groups are decoded. This opportunity to recover data packets from earlier FEC groups may be useful in video coding and other systems, in which later-received data often cannot be decoded unless earlier-received data is decoded properly.

    摘要翻译： 可以在编码器和解码器之间使用多个用于错误检测和校正的FEC码和/或包进行编码的视频数据。 只有FEC数据包的一部分需要在编码器和解码器之间传输。 每个FEC组的FEC分组可以采用当前FEC组的数据分组和前一个FEC组的未发送FEC分组的输入。 由于FEC分组之间的关系，当传输错误出现并且数据分组丢失时，当稍后接收的FEC组被解码时，解码器仍然有机会恢复来自早先接收的FEC组的丢失的数据分组。 从先前的FEC组恢复数据分组的机会在视频编码和其他系统中可能是有用的，其中后期接收的数据通常不能被解码，除非先前接收到的数据被正确解码。

    Adaptive bandwidth estimation
    3.
    发明授权
    Adaptive bandwidth estimation 有权
    自适应带宽估计

    公开(公告)号：US08773993B2

    公开(公告)日：2014-07-08

    申请号：US13085456

    申请日：2011-04-12

    申请人： Hassan A. Shojania ,  Hyeonkuk Jeong ,  Joe S. Abuan ,  Roberto Garcia, Jr. ,  Thomas C. Jansen ,  James O. Normile ,  Hsi-Jung Wu ,  Yan Yang ,  Xiaosong Zhou

    发明人： Hassan A. Shojania ,  Hyeonkuk Jeong ,  Joe S. Abuan ,  Roberto Garcia, Jr. ,  Thomas C. Jansen ,  James O. Normile ,  Hsi-Jung Wu ,  Yan Yang ,  Xiaosong Zhou

    IPC分类号： G08C15/00

    CPC分类号： H04L43/0882 ,  H04L43/10

    摘要： Some embodiments provide a method of combining multiple streams of data packets into a single combined stream in a manner that facilitates accurate estimation of bandwidth of a connection over a network between two devices. When combining the streams into the combined stream, the method associates a set of packets from a first stream and a reference packet from a second stream to form a longer sequence of packets in the combined stream. The method sends the combined stream from a first device to a second device so that the second device can estimate the bandwidth of the connection between the first and second devices based on the inter-arrival times of the packets in the sequence of packets.

    摘要翻译： 一些实施例提供了一种将多个数据分组流合并为单个组合流的方法，其方式是促进通过两个设备之间的网络上的连接的带宽的精确估计。 当将流合并到组合流中时，该方法将来自第一流的一组分组和来自第二个流的参考分组相关联，以在组合流中形成较长的分组序列。 该方法将组合流从第一设备发送到第二设备，使得第二设备可以基于分组序列中的分组的到达之间时间来估计第一和第二设备之间的连接的带宽。

    Video Conference Network Management for a Mobile Device
    4.
    发明申请
    Video Conference Network Management for a Mobile Device 有权
    移动设备的视频会议网络管理

    公开(公告)号：US20110249077A1

    公开(公告)日：2011-10-13

    申请号：US12794774

    申请日：2010-06-06

    申请人： Joe S. Abuan ,  James O. Normile ,  Hsi-Jung Wu ,  Yan Yang ,  Hyeonkuk Jeong ,  Xiaosong Zhou ,  Roberto Garcia, JR.

    发明人： Joe S. Abuan ,  James O. Normile ,  Hsi-Jung Wu ,  Yan Yang ,  Hyeonkuk Jeong ,  Xiaosong Zhou ,  Roberto Garcia, JR.

    IPC分类号： H04N7/14

    CPC分类号： H04N7/141 ,  G06F3/04817 ,  G06F3/04842 ,  G06F3/04886 ,  G06F9/451 ,  G09G5/14 ,  H04M1/72583 ,  H04N5/2258 ,  H04N5/2624 ,  H04N5/272 ,  H04N7/147 ,  H04N7/15

    摘要： Some embodiments provide a method for managing a video conference between a first device and a second device. The method identifies a first ceiling bit rate for transmitting video conference data to the second device through the communication channel. The method identifies a current bit rate that is less than the first ceiling bit rate. The method receives networking data regarding the communication channel from the second device. The method determines, from the received network data, that the communication channel will sustain an increase in the current bit rate. The method increments the current bit rate. The method iteratively performs the receiving, determining, and incrementing operations until a determination is made that the communication channel will not sustain the increase in the current bit rate.

    摘要翻译： 一些实施例提供了一种用于管理第一设备和第二设备之间的视频会议的方法。 该方法通过通信信道识别用于将视频会议数据发送到第二设备的第一上限比特率。 该方法识别当前比特率小于第一个上限比特率。 该方法从第二设备接收关于通信信道的网络数据。 该方法从接收到的网络数据确定通信信道将维持当前比特率的增加。 该方法会增加当前的比特率。 该方法迭代地执行接收，确定和递增操作，直到确定通信信道不会维持当前比特率的增加。

    ADAPTIVE BANDWIDTH ESTIMATION
    5.
    发明申请
    ADAPTIVE BANDWIDTH ESTIMATION 有权
    自适应带宽估计

    公开(公告)号：US20120281715A1

    公开(公告)日：2012-11-08

    申请号：US13085456

    申请日：2011-04-12

    申请人： Hassan A. Shojania ,  Hyeonkuk Jeong ,  Joe S. Abuan ,  Roberto Garcia, JR. ,  Thomas C. Jansen ,  James O. Normile ,  Hsi-Jung Wu ,  Yan Yang ,  Xiaosong Zhou

    发明人： Hassan A. Shojania ,  Hyeonkuk Jeong ,  Joe S. Abuan ,  Roberto Garcia, JR. ,  Thomas C. Jansen ,  James O. Normile ,  Hsi-Jung Wu ,  Yan Yang ,  Xiaosong Zhou

    IPC分类号： H04J3/22

    CPC分类号： H04L43/0882 ,  H04L43/10

    摘要： Some embodiments provide a method of combining multiple streams of data packets into a single combined stream in a manner that facilitates accurate estimation of bandwidth of a connection over a network between two devices. When combining the streams into the combined stream, the method associates a set of packets from a first stream and a reference packet from a second stream to form a longer sequence of packets in the combined stream. The method sends the combined stream from a first device to a second device so that the second device can estimate the bandwidth of the connection between the first and second devices based on the inter-arrival times of the packets in the sequence of packets.

    摘要翻译： 一些实施例提供了一种将多个数据分组流合并为单个组合流的方法，其方式是促进通过两个设备之间的网络上的连接的带宽的精确估计。 当将流合并到组合流中时，该方法将来自第一流的一组分组和来自第二个流的参考分组相关联，以在组合流中形成更长的分组序列。 该方法将组合流从第一设备发送到第二设备，使得第二设备可以基于分组序列中的分组的到达之间时间来估计第一和第二设备之间的连接的带宽。

    Joint bandwidth detection algorithm for real-time communication
    7.
    发明授权
    Joint bandwidth detection algorithm for real-time communication 有权
    用于实时通信的联合带宽检测算法

    公开(公告)号：US08638851B2

    公开(公告)日：2014-01-28

    申请号：US12646065

    申请日：2009-12-23

    申请人： Hyeonkuk Jeong ,  Xiaosong Zhou ,  Joe Abuan ,  Xiaojin Shi ,  Hsi-Jung Wu ,  James Oliver Normile

    发明人： Hyeonkuk Jeong ,  Xiaosong Zhou ,  Joe Abuan ,  Xiaojin Shi ,  Hsi-Jung Wu ,  James Oliver Normile

    IPC分类号： H04N7/12

    CPC分类号： H04N7/148 ,  H04N19/115 ,  H04N19/166 ,  H04N19/192 ,  H04N19/196 ,  H04N19/197 ,  H04N19/46

    摘要： A video coding system and method for increasing a transmitted output bit rate of a video encoding system by altering the content of the bit stream. A video encoder may receive a coding mode signal from a computer application for coding source video data, the coding mode signal indicating a target bit rate having a risk factor related to transmission error associated to the target bit rate. The coded bitstream may be modified based on the risk factor indicated in the coding mode signal. A modified coded bitstream may be outputted at the target bit rate and at a reduced coding efficiency, and the channel may be tested for transmission errors. Based on the test results, a revised coding mode signal indicating the same target bit rate, but a revised risk factor may be provided. The coded bitstream may be revised by removing the modifications previously made to the coded bitstream and a revised coded bitstream having greater coding efficiency may be output at the target bit rate.

    摘要翻译： 一种用于通过改变比特流的内容来增加视频编码系统的发送的输出比特率的视频编码系统和方法。 视频编码器可以接收来自用于编码源视频数据的计算机应用的编码模式信号，编码模式信号指示具有与目标比特率相关联的传输错误的风险因子的目标比特率。 可以基于编码模式信号中指示的危险因素来修改编码比特流。 可以以目标比特率和降低的编码效率输出经修改的编码比特流，并且可以测试该信道的传输错误。 基于测试结果，可以提供指示相同目标比特率的修订的编码模式信号，但是可以提供经修订的风险因子。 可以通过去除先前对编码比特流进行的修改来修改编码比特流，并且可以以目标比特率输出具有更大编码效率的修改编码比特流。

    PREDICTIVE VIDEO CODER WITH LOW POWER REFERENCE PICTURE TRANSFORMATION
    9.
    发明申请
    PREDICTIVE VIDEO CODER WITH LOW POWER REFERENCE PICTURE TRANSFORMATION 有权
    具有低功率参考图像转换的预测视频编码器

    公开(公告)号：US20130329799A1

    公开(公告)日：2013-12-12

    申请号：US13755928

    申请日：2013-01-31

    申请人： Yao-Chung Lin ,  Xiaosong Zhou ,  Hsi-Jung Wu ,  Douglas Scott Price ,  Chris Y. Chung ,  Dazhong Zhang

    发明人： Yao-Chung Lin ,  Xiaosong Zhou ,  Hsi-Jung Wu ,  Douglas Scott Price ,  Chris Y. Chung ,  Dazhong Zhang

    IPC分类号： H04N7/26

    CPC分类号： H04N19/51 ,  H04N19/503

    摘要： Video coders may perform perspective transformation of reference frames during coding in a manner that conserves processing resources. When a new input frame is available for coding, a camera position for the input frame may be estimated. A video coder may search for reference pictures having similar camera positions as the position of the input frame and, for each reference picture identified, the video coder may perform a prediction search to identify a reference picture that is the best prediction match for the input frame. Once the video coder identifies a reference picture to serve as a prediction source for the input frame, the video coder may derive a transform to match the reference frame data to the input frame data and may transform the reference picture accordingly. The video coder may code the input frame using the transformed reference picture as a prediction reference and may transmit coded frame data and the camera position of the input frame to a decoder. Thus, the video coder may perform derivation and execution of transforms on a limited basis which conserves system resources.

    摘要翻译： 视频编码器可以在编码期间以保存处理资源的方式执行参考帧的透视变换。 当新的输入帧可用于编码时，可以估计用于输入帧的摄像机位置。 视频编码器可以搜索具有与输入帧的位置相似的相机位置的参考图像，并且对于识别的每个参考图像，视频编码器可以执行预测搜索以识别作为输入帧的最佳预测匹配的参考图像 。 一旦视频编码器识别用作输入帧的预测源的参考图像，则视频编码器可以导出将参考帧数据与输入帧数据相匹配的变换，并且可以相应地变换参考图像。 视频编码器可以使用变换的参考图片作为预测参考来对输入帧进行编码，并且可以将编码的帧数据和输入帧的摄像机位置发送到解码器。 因此，视频编码器可以在有限的基础上进行变换的推导和执行，从而节省系统资源。

    METHOD AND APPARATUS FOR ERROR RESILIENT LONG TERM REFERENCING BLOCK REFRESH
    10.
    发明申请
    METHOD AND APPARATUS FOR ERROR RESILIENT LONG TERM REFERENCING BLOCK REFRESH 审中-公开
    用于错误恢复长期参考块修改的方法和装置

    公开(公告)号：US20120106632A1

    公开(公告)日：2012-05-03

    申请号：US12914650

    申请日：2010-10-28

    申请人： Dazhong Zhang ,  Xiaosong Zhou ,  Hsi-Jung Wu

    发明人： Dazhong Zhang ,  Xiaosong Zhou ,  Hsi-Jung Wu

    IPC分类号： H04N7/50

    CPC分类号： H04N19/89 ,  H04N19/107 ,  H04N19/14 ,  H04N19/176 ,  H04N19/61

    摘要： A system and method for coding video data wherein a pixel block may be coded for refresh with reference to an LTR frame that was successfully transmitted, or has a high probability of having been successfully transmitted from the encoder to the decoder. Not all pixel blocks in the frame may be refreshed at the same rate. Pixel blocks containing edge details, containing a significant object, or containing foreground image data may be refreshed more often than pixel blocks containing smooth, background, or relatively less significant image data.

    摘要翻译： 一种用于对视频数据进行编码的系统和方法，其中像素块可以被编码用于参考已经成功发送的LTR帧进行刷新，或者具有从编码器成功发送到解码器的高概率。 不是帧中的所有像素块可以以相同的速率刷新。 包含重要对象或包含前景图像数据的边缘细节的像素块可能比包含平滑，背景或相对不太重要的图像数据的像素块更频繁地刷新。