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    • 7. 发明申请
    • Internet protocol (IP) television
    • 互联网协议(IP)电视
    • US20070130601A1
    • 2007-06-07
    • US11294186
    • 2005-12-05
    • Weiping LiCherng-Daw Hwang
    • Weiping LiCherng-Daw Hwang
    • H04N7/173
    • H04L12/18H04L29/06027H04L65/4076H04L65/4084H04N21/2225H04N21/6405H04N21/6408
    • Embodiments are directed to systems and methods for delivering broadcast television (TV) using an Internet Protocol (IP) network. The IPTV system and methods use real-time routing servers to unicast and/or multicast of broadcast television programs. The IPTV system and methods may enable advertisers to insert local commercials into national or international television broadcasts. The IPTV system and methods offer network-based time-shifting of broadcast television programming rather than personal video recorder (PVR)-based time-shifting. The IPTV system and methods may provide scalable video on-demand (VOD) by multicasting video content and dynamically determining whether to speed up or slow down a bit stream to catch up to or wait for the previous or next multicast of the video content. The IPTV system and methods also may enables interactive television programming whereby a viewer may be permitted to exchange video with a television program and have that video displayed.
    • 实施例涉及使用互联网协议(IP)网络传送广播电视(TV)的系统和方法。 IPTV系统和方法使用实时路由服务器来广播电视节目的单播和/或组播。 IPTV系统和方法可以使广告商将本地广告插入到国内或国际电视广播中。 IPTV系统和方法提供基于网络的广播电视节目的时移,而不是基于个人录像机(PVR)的时移。 IPTV系统和方法可以通过多播视频内容来提供可扩展视频点播(VOD),并且动态地确定是否加速或减慢比特流以赶上或等待视频内容的先前或后续多播。 IPTV系统和方法还可以实现交互式电视节目编排,使得观众可以被允许与电视节目交换视频并且显示该视频。
    • 9. 发明授权
    • Method for encoding and decoding images
    • 图像编码和解码方法
    • US5592569A
    • 1997-01-07
    • US439566
    • 1995-05-11
    • Weiping Li
    • Weiping Li
    • G06T9/00H04N7/28H04N7/30H04N7/46H04N7/50G06K9/36
    • G06T9/008H04N19/59H04N19/60H04N19/61H04N19/94
    • A technique for encoding and decoding an image includes the following steps: subsampling the image to obtain a number of subsampled frames of spatially offset image-representative signals; transforming each of the subsampled frames to obtain a corresponding number of frames of transform coefficient-representative signals; forming vector-representative signals from corresponding coefficient-representative signals of the respective frames of coefficient-representative signals; performing a thresholding operation on the vector-representative signals to obtain thresholded vector-representative signals; vector quantizing the thresholded vector-representative signals to obtain encoded signals; storing the encoded signals; and decoding the encoded signals to obtain a recovered version of the image.
    • 用于对图像进行编码和解码的技术包括以下步骤:对图像进行二次采样,以获得空间偏移图像代表信号的多个子采样帧; 变换每个子采样帧以获得相应数量的变换系数代表信号的帧; 从系数代表信号的各个帧的相应系数代表信号形成向量代表信号; 对矢量代表信号执行阈值处理以获得阈值矢量代表信号; 矢量量化阈值向量代表信号以获得编码信号; 存储编码信号; 并对编码的信号进行解码以获得图像的恢复版本。
    • 10. 发明授权
    • Method for decomposing signals into efficient time-frequency
representations for data compression and recognition
    • 将信号分解成用于数据压缩和识别的高效时频表示的方法
    • US5453945A
    • 1995-09-26
    • US182692
    • 1994-01-13
    • Michael R. TuckerWeiping Li
    • Michael R. TuckerWeiping Li
    • G06F17/00G06T9/00G06F15/332
    • G06K9/00523G06T9/007
    • A method for decomposing signals into efficient time-frequency representations for data compression and recognition which uses adaptable wavelet basis functions and concentrates a signal or image's information to a higher degree than methods based on the discrete fourier transform, the discrete cosine transform, the standard wavelet transform and known adaptive transform techniques. The purpose of the present invention is to enable data signals and images to be stored and transmitted very efficiently. The time-frequency plane is broken up into subspaces. The method determines the optimum basis function for each of the subspace regions. Basis functions are chosen such that much of the information in the signal is contained in a small number of coefficients. The resulting coefficients form a set that represents the signal in the most concentrated manner.
    • 一种将信号分解为用于数据压缩和识别的有效时间频率表示的方法,其使用适应性小波基函数,并且将信号或图像的信息集中在比基于离散傅里叶变换,离散余弦变换,标准小波的方法更高的程度上 变换和已知的自适应变换技术。 本发明的目的是使得能够非常有效地存储和发送数据信号和图像。 时频平面被分解为子空间。 该方法确定每个子空间区域的最优基函数。 选择基函数使得信号中的大部分信息被包含在少量的系数中。 所得到的系数形成以最集中的方式表示信号的集合。