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21. 发明申请

US20120260122A1 Video conferencing with multipoint conferencing units and multimedia transformation units 有权
标题翻译：具有多点会议单元和多媒体转换单元的视频会议
公开(公告)号：US20120260122A1
公开(公告)日：2012-10-11
申请号：US13066086
申请日：2011-04-06
申请人： Rohit Puri , Jim Chou
发明人： Rohit Puri , Jim Chou
IPC分类号： G06F11/14 , H04N7/14 , G06F15/16
CPC分类号： H04N7/152 , H04L1/0041 , H04L1/0045 , H04L1/0057 , H04L12/1822 , H04L12/1863 , H04L65/403 , H04L65/605 , H04L2001/0096 , H04N7/15 , H04N21/2343 , H04N21/2365 , H04N21/26275
摘要： In one embodiment, a method includes receiving at a multimedia transformation unit, media streams from a plurality of endpoints, transmitting audio components of the media streams to a multipoint conferencing unit, receiving an identifier from the multipoint conferencing unit identifying one of the media streams as an active speaker stream, processing at the multimedia transformation unit, a video component of the active speaker stream, and transmitting the active speaker stream to one or more of the endpoints without transmitting the video component to the multipoint conferencing unit. An apparatus is also disclosed.
摘要翻译：在一个实施例中，一种方法包括在多媒体变换单元处接收来自多个端点的媒体流，将媒体流的音频分量传输到多点会议单元，从多点会议单元接收标识媒体流中的一个媒体流的标识符为主动扬声器流，多媒体变换单元处理，活动扬声器流的视频分量，以及将活动扬声器流发送到一个或多个端点，而不将视频组件传输到多点会议单元。还公开了一种装置。

22. 发明授权

US07400774B2 Encoding and decoding of digital data using cues derivable at a decoder 有权
标题翻译：使用可在解码器导出的提示对数字数据进行编码和解码
公开(公告)号：US07400774B2
公开(公告)日：2008-07-15
申请号：US10651854
申请日：2003-08-29
申请人： Rohit Puri , Kannan Ramchandran
发明人： Rohit Puri , Kannan Ramchandran
IPC分类号： G06K9/36 , G06K9/46
CPC分类号： H04N19/94 , H04N19/12 , H04N19/124 , H04N19/127 , H04N19/134 , H04N19/154 , H04N19/166 , H04N19/18 , H04N19/46 , H04N19/523 , H04N19/61 , H04N19/63
摘要： Encoding digital data by using cues at a decoder. An encoder selects an index to indicate a target codeword from the complete space of all codewords to a decoder. The index identifies a group or a set of codewords that contain the target codeword. The sets are represented by a bit-length that is smaller than the code word bit-length thus achieving compression. Two or more codewords in such a set are separated by a predetermined distance and all such sets of codewords considered together form the complete space of all codewords. The encoder sends syntax information, including the index, to specify the decoding. The decoder then uses a set of candidate cues in a comparison operation to determine the target codeword from the indexed set. Processing complexity can be allocated among the encoder, decoder and other possible devices as, for example, in a digital network.
摘要翻译：在解码器上使用提示对数字数据进行编码。编码器从所有码字的完整空间中选择索引以指示目标码字到解码器。索引标识包含目标码字的组或一组码字。这些集合由比特长度小的代码字比特长度来表示，从而实现压缩。这样的集合中的两个或更多个码字被隔开预定的距离，并且所有这些一起考虑的码字集合形成所有码字的完整空间。编码器发送语法信息，包括索引，以指定解码。解码器然后在比较操作中使用一组候选提示来确定来自索引集合的目标码字。处理复杂度可以在编码器，解码器和其他可能的设备中分配，例如在数字网络中。

23. 发明申请

US20070285285A1 SYSTEM AND METHOD FOR EFFICIENT COMPRESSION OF DIGITAL DATA 有权
标题翻译：用于数字数据有效压缩的系统和方法
公开(公告)号：US20070285285A1
公开(公告)日：2007-12-13
申请号：US11422974
申请日：2006-06-08
申请人： Rohit Puri , Parthasarathy Sriram
发明人： Rohit Puri , Parthasarathy Sriram
IPC分类号： H03M7/00
CPC分类号： H04N19/91 , H04N19/103 , H04N19/105 , H04N19/124 , H04N19/129 , H04N19/46 , H04N19/60 , H04N19/70
摘要： A system for compressing digital data by representing a portion of it predictionally and transformationally as a block of transform coefficients, then quantizing that block selectively into a set of encoding symbols based on an indication whether the transform coefficients represent the portion as having a particular characteristic, and then by encoding the set of encoding symbols into a data bit stream. In particular, frequency may be used as the characteristic of the digital data in many applications.
摘要翻译：一种用于通过将数据数据预先和变换地表示为变换系数块来压缩数字数据的系统，然后基于变换系数是否表示该部分具有特定特征的指示将该块有选择地量化到一组编码符号中，然后通过将该组编码符号编码成数据比特流。特别地，频率可以用作许多应用中的数字数据的特征。

24. 发明申请

US20050117639A1 Optimal spatio-temporal transformations for reduction of quantization noise propagation effects 审中-公开
标题翻译：用于减少量化噪声传播效应的最佳时空变换
公开(公告)号：US20050117639A1
公开(公告)日：2005-06-02
申请号：US10971972
申请日：2004-10-22
申请人： Deepak Turaga , Rohit Puri , Ali Tabatabai
发明人： Deepak Turaga , Rohit Puri , Ali Tabatabai
IPC分类号： G06F17/14 , G06K20060101 , H04B1/66 , H04N7/26 , H04N7/50
CPC分类号： G06F17/14 , H04N19/114 , H04N19/122 , H04N19/126 , H04N19/129 , H04N19/13 , H04N19/137 , H04N19/142 , H04N19/176 , H04N19/184 , H04N19/543 , H04N19/573 , H04N19/577 , H04N19/593 , H04N19/61 , H04N19/615 , H04N19/63 , H04N19/635
摘要： A method and apparatus for encoding video frames is described. In one embodiment, an encoding method includes identifying a set of similar pixels that includes at least one reference pixel and multiple predicted pixels, and jointly transforming the set of similar pixels into a set of coefficients using an orthonormal transform.
摘要翻译：描述用于编码视频帧的方法和装置。在一个实施例中，编码方法包括识别包括至少一个参考像素和多个预测像素的一组相似像素，以及使用正交变换将相似像素集合共同变换为一组系数。

25. 发明申请

US20050117638A1 Lifting-based implementations of orthonormal spatio-temporal transformations 失效
标题翻译：正交时空变换的基于提升的实现
公开(公告)号：US20050117638A1
公开(公告)日：2005-06-02
申请号：US10971896
申请日：2004-10-22
申请人： Deepak Turaga , Rohit Puri , Ali Tabatabai
发明人： Deepak Turaga , Rohit Puri , Ali Tabatabai
IPC分类号： H04B1/66 , H04N20060101
CPC分类号： H04N19/615 , H04N19/13 , H04N19/182 , H04N19/61 , H04N19/63
摘要： A method and apparatus for encoding video frames is described. In one embodiment, an encoding method includes jointly transforming a set of pixels into high-pass data using an orthonormal transform. The set of pixels includes at least one reference pixel and predicted pixels. The method further includes generating low-pass data using the reference pixel and the high-pass data.
摘要翻译：描述用于编码视频帧的方法和装置。在一个实施例中，编码方法包括使用正交变换将一组像素联合变换为高通数据。像素集合包括至少一个参考像素和预测像素。该方法还包括使用参考像素和高通数据生成低通数据。

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