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    Architecture and related methods for streaming media content through heterogeneous networks
    61.
    发明授权
    Architecture and related methods for streaming media content through heterogeneous networks 有权
    通过异构网络流媒体内容的架构和相关方法

    公开(公告)号：US07454527B2

    公开(公告)日：2008-11-18

    申请号：US09848706

    申请日：2001-05-02

    申请人： Qian Zhang ,  Wenwu Zhu ,  Ya-Qin Zhang ,  Fan Yang

    发明人： Qian Zhang ,  Wenwu Zhu ,  Ya-Qin Zhang ,  Fan Yang

    IPC分类号： G06F15/16

    CPC分类号： H04L69/16 ,  H04L29/06 ,  H04L29/06027 ,  H04L65/1026 ,  H04L65/1036 ,  H04L65/4084 ,  H04L69/161 ,  H04L69/163 ,  H04L69/22 ,  H04L69/326 ,  H04W4/00 ,  H04W28/18 ,  H04W76/10 ,  H04W88/16

    摘要： A system for content (e.g., streaming media) is presented comprising a server, to provide media content on request through a wireline network, coupled to a wireless host through a network gateway. The network gateway establishes a communication channel from the server to the wireless host through both a wireline network and a wireless network, wherein the communication channel includes a transport layer protocol with control parameters for network elements of each of the wireline network and the wireless network. This abstract itself is not intended to limit the scope of this patent. The scope of the present invention is pointed out in the appending claims.

    摘要翻译： 呈现用于内容（例如，流媒体）的系统，其包括服务器，以通过有线网络请求提供媒体内容，通过网络网关耦合到无线主机。 网络网关通过有线网络和无线网络建立从服务器到无线主机的通信信道，其中通信信道包括具有用于有线网络和无线网络中的每一个的网络元件的控制参数的传输层协议。 本摘要本身并不旨在限制本专利的范围。 在所附权利要求中指出了本发明的范围。

    Method and system for managing admission to a network
    62.
    发明授权
    Method and system for managing admission to a network 失效
    管理网络准入的方法和系统

    公开(公告)号：US07177271B2

    公开(公告)日：2007-02-13

    申请号：US09960810

    申请日：2001-09-21

    申请人： Huai-Rong Shao ,  Wenwu Zhu ,  Ya-Qin Zhang ,  Jian-Ming Qiu

    发明人： Huai-Rong Shao ,  Wenwu Zhu ,  Ya-Qin Zhang ,  Jian-Ming Qiu

    IPC分类号： G01R31/08

    CPC分类号： H04L47/824 ,  H04L47/115 ,  H04L47/15 ,  H04L47/283 ,  H04L47/29 ,  H04L47/70 ,  H04L47/822 ,  H04L47/826

    摘要： A method and system for managing admission to a network considers the packet delay of the network in making an admission decision. The packet delay of the network is periodically probed. To avoid disturbing or impairing the traffic of the network, a sequence of probing packets is sent to the network at an irregular interval. Responses to the probing packets are analyzed to obtain delay information of the network. If the delay information is insufficient to make an admission decision, then the packet loss rate of the network is measured and considered.

    摘要翻译： 用于管理网络准入的方法和系统考虑网络的分组延迟进行准入决定。 定期探测网络的分组延迟。 为了避免干扰或损害网络的流量，一系列探测分组以不规则的间隔发送到网络。 分析对探测分组的响应，以获得网络的延迟信息。 如果延迟信息不足以作出准入决定，则测量并考虑网络的丢包率。

    Robust, inferentially synchronized transmission of compressed transport-layer-protocol headers
    65.
    发明申请
    Robust, inferentially synchronized transmission of compressed transport-layer-protocol headers 有权
    压缩传输层协议报头的稳健的，同步的传输

    公开(公告)号：US20050286523A1

    公开(公告)日：2005-12-29

    申请号：US11203954

    申请日：2005-08-15

    申请人： HongBin Liao ,  Qian Zhang ,  Wenwu Zhu ,  Ya-Qin Zhang

    发明人： HongBin Liao ,  Qian Zhang ,  Wenwu Zhu ,  Ya-Qin Zhang

    IPC分类号： H04L12/56 ,  H04L29/06 ,  H04L29/08 ,  H04L12/28

    CPC分类号： H04L69/04 ,  H04L47/10 ,  H04L47/193 ,  H04L47/27 ,  H04L47/37 ,  H04L69/16 ,  H04L69/161 ,  H04L69/163 ,  H04L69/22 ,  H04L69/326

    摘要： An implementation of a technology, described herein, for transmitting compressed network transport-layer-protocol headers in a speedy, efficient, inferentially synchronized, and robust manner. An implementation, described herein, models the transmission of compressed headers to the congestion procedure of the network transport-layer protocol (e.g., TCP's). Doing so, the sender of the compressed headers can infer whether the receiver correctly received them. Unlike the slow direct synchronization employed by conventional schemes, this implementation of the present claimed invention inferentially synchronizes by modeling after the congestion procedure of the network transport-layer protocol. This is inherently faster than direct synchronization. Since the implementation performs well over both noiseless and noisy links, it is particularly suited to use over wireless communications channels. This abstract itself is not intended to limit the scope of this patent. The scope of the present invention is pointed out in the appending claims.

    摘要翻译： 本文描述的用于以快速，有效，同步和稳健的方式发送压缩网络传输层协议报头的技术的实现。 这里描述的实现将压缩报头的传输建模到网络传输层协议（例如，TCP）的拥塞过程。 这样做，压缩报头的发送者可以推断接收机是否正确接收到它们。 与常规方案所采用的慢速直接同步不同，本发明的实施方式在网络传输层协议的拥塞过程之后通过建模同步。 这本质上比直接同步更快。 由于实现在无声和噪声链路上表现良好，特别适用于无线通信信道。 本摘要本身并不旨在限制本专利的范围。 在所附权利要求中指出了本发明的范围。

    Video coding system and method using 3-D discrete wavelet transform and entropy coding with motion information
    67.
    发明申请
    Video coding system and method using 3-D discrete wavelet transform and entropy coding with motion information 失效
    使用3-D离散小波变换和运动信息熵编码的视频编码系统和方法

    公开(公告)号：US20050094731A1

    公开(公告)日：2005-05-05

    申请号：US10984467

    申请日：2004-11-09

    申请人： Jizheng Xu ,  Shipeng Li ,  Ya-Qin Zhang

    发明人： Jizheng Xu ,  Shipeng Li ,  Ya-Qin Zhang

    IPC分类号： H04N7/12 ,  H04N7/26

    CPC分类号： H04N19/615 ,  H04N19/13 ,  H04N19/147 ,  H04N19/19 ,  H04N19/61 ,  H04N19/62 ,  H04N19/63 ,  H04N19/647

    摘要： A video encoding system and method utilizes a three-dimensional (3-D) wavelet transform and entropy coding that utilize motion information in a way to reduce the sensitivity to motion. In one implementation, the coding process initially estimates motion trajectories of pixels in a video object from frame to frame in a video sequence to account for motion of the video object throughout the frames. After motion estimation, a 3-D wavelet transform is applied in two parts. First, a temporal 1-D wavelet transform is applied to the corresponding pixels along the motion trajectories in a time direction. The temporal wavelet transform produces decomposed frames of temporal wavelet transforms, where the spatial correlation within each frame is well preserved. Second, a spatial 2-D wavelet transform is applied to all frames containing the temporal wavelet coefficients. The wavelet transforms produce coefficients within different sub-bands. The process then codes wavelet coefficients. In particular, the coefficients are assigned various contexts based on the significance of neighboring samples in previous, current, and next frame, thereby taking advantage of any motion information between frames. The wavelet coefficients are coded independently for each sub-band to permit easy separation at a decoder, making resolution scalability and temporal scalability natural and easy. During the coding, bits are allocated among sub-bands according to a technique that optimizes rate-distortion characteristics.

    摘要翻译： 视频编码系统和方法利用利用运动信息的三维（3-D）小波变换和熵编码来降低对运动的敏感度。 在一个实施方案中，编码过程最初估计视频序列中的视频对象中的像素的运动轨迹，以考虑视频对象在整个帧中的运动。 运动估计后，三维小波变换分为两部分。 首先，沿时间方向沿着运动轨迹将时间1-D小波变换应用于相应的像素。 时间小波变换产生时间小波变换的分解帧，其中每帧内的空间相关性保持良好。 其次，将空间二维小波变换应用于包含时间小波系数的所有帧。 小波变换产生不同子带内的系数。 然后，该过程编码小波系数。 特别地，根据前一帧，当前帧和下一帧中相邻采样的重要性，将系数分配给各种上下文，从而利用帧之间的任何运动信息。 对于每个子带，小波系数被独立地编码，以便在解码器处容易地分离，使得分辨率可扩展性和时间可扩展性自然而简单。 在编码期间，根据优化速率失真特性的技术，在子带中分配比特。

    Systems and methods with error resilience in enhancement layer bitstream of scalable video coding
    68.
    发明申请
    Systems and methods with error resilience in enhancement layer bitstream of scalable video coding 失效
    在可扩展视频编码的增强层比特流中具有错误弹性的系统和方法

    公开(公告)号：US20050089105A1

    公开(公告)日：2005-04-28

    申请号：US10978277

    申请日：2004-10-29

    申请人： Ya-Qin Zhang ,  Shipeng Li ,  Feng Wu ,  Rong Yan

    发明人： Ya-Qin Zhang ,  Shipeng Li ,  Feng Wu ,  Rong Yan

    IPC分类号： G06T9/00 ,  H04N19/89 ,  H04N7/12

    CPC分类号： H04N19/29 ,  H04N19/34 ,  H04N19/68 ,  H04N19/89

    摘要： A scalable layered video coding scheme that encodes video data frames into multiple layers, including a base layer of comparatively low quality video and multiple enhancement layers of increasingly higher quality video, adds error resilience to the enhancement layer. Unique resynchronization marks are inserted into the enhancement layer bitstream in headers associated with each video packet, headers associated with each bit plane, and headers associated with each video-of-plane (VOP) segment. Following transmission of the enhancement layer bitstream, the decoder tries to detect errors in the packets. Upon detection, the decoder seeks forward in the bitstream for the next known resynchronization mark. Once this mark is found, the decoder is able to begin decoding the next video packet. With the addition of many resynchronization marks within each frame, the decoder can recover very quickly and with minimal data loss in the event of a packet loss or channel error in the received enhancement layer bitstream. The video coding scheme also facilitates redundant encoding of header information from the higher-level VOP header down into lower level bit plane headers and video packet headers. Header extension codes are added to the bit plane and video packet headers to identify whether the redundant data is included.

    摘要翻译： 将视频数据帧编码成多层的可分级的分层视频编码方案，包括具有越来越高质量视频的较低质量视频和多个增强层的基本层，向增强层增加了错误恢复能力。 将独特的再同步标记插入到与每个视频分组相关联的报头中的增强层比特流中，与每个位平面相关联的报头以及与每个视频平面（VOP）段相关联的报头。 在传输增强层比特流之后，解码器尝试检测分组中的错误。 在检测到时，解码器在比特流中向前寻找下一个已知的再同步标记。 一旦找到该标记，解码器就可以开始对下一个视频数据包进行解码。 通过在每个帧内添加许多重新同步标记，解码器可以在接收到的增强层比特流中的分组丢失或信道错误的情况下非常快速地恢复并且具有最小的数据丢失。 视频编码方案还有助于将标题信息从较高级别的VOP头部冗余编码到较低级位平面头部和视频分组头部。 标题扩展码被添加到位平面和视频分组报头，以标识是否包括冗余数据。

    Memory efficient 3-D wavelet transform for video coding without boundary effects
    69.
    发明授权
    Memory efficient 3-D wavelet transform for video coding without boundary effects 失效
    用于无边界效应的视频编码的高效的3-D小波变换

    公开(公告)号：US06795504B1

    公开(公告)日：2004-09-21

    申请号：US09599807

    申请日：2000-06-21

    申请人： Jizheng Xu ,  Shipeng Li ,  Zixiang Xiong ,  Ya-Qin Zhang

    发明人： Jizheng Xu ,  Shipeng Li ,  Zixiang Xiong ,  Ya-Qin Zhang

    IPC分类号： H04N712

    CPC分类号： H04N19/61 ,  H04N19/102 ,  H04N19/63

    摘要： A video coding system and method utilizes a 3-D wavelet transform that is memory efficient and reduces boundary effect across frame boundaries. The transform employs a lifting-based scheme and buffers wavelet coefficients at intermediate lifting steps towards the end of one GOP (group of pictures) until intermediate coefficients from the beginning of the next GOP are available. The wavelet transform scheme does not physically break the video sequence into GOPs, but processes the sequence without intermission. In this manner, the system simulates an infinite wavelet transformation across frame boundaries and the boundary effect is significantly reduced or essentially eliminated. Moreover, the buffering is very small and the scheme can be used to implement other decomposition structures. The wavelet transform scheme provides superb video playback quality with little or no boundary effects.

    摘要翻译： 视频编码系统和方法利用三维小波变换，其存储器有效并且减少跨边界的边界效应。 该变换采用基于提升的方案，并且在一个GOP（图像组）的结尾的中间提升步骤处缓冲小波系数，直到来自下一个GOP的开始的中间系数可用。 小波变换方案不会将视频序列物理地分解成GOP，而是在不间断的情况下处理序列。 以这种方式，系统模拟跨帧边界的无限小波变换，并且边界效应被显着减少或基本上消除。 此外，缓冲非常小，并且该方案可以用于实现其他分解结构。 小波变换方案提供极好的视频播放质量，很少或没有边界效应。