公开(公告)号：US07088774B1

公开(公告)日：2006-08-08

申请号：US10158536

申请日：2002-05-29

申请人： Shankar Moni ,  Ankur Varma ,  John Allen Tardif

发明人： Shankar Moni ,  Ankur Varma ,  John Allen Tardif

IPC分类号： H04N7/12

CPC分类号： H04N21/44004 ,  H04N21/4307 ,  H04N21/4788

摘要： A system and method of synchronizing a media stream involves determining urgency measures and favorability measures. An urgency measure relates to a degree by which a media stream is currently out of synchronization. A favorability measure indicates the disruptiveness or likely noticeability altering the media stream at a particular temporal point. As a media stream becomes more and more out of synchronization, the urgency factor increases, and the system looks for places in the media stream at which units such as video frames or audio samples can be added or subtracted to re-achieve synchronization. When the urgency measure is at lower values, the system selects only points in the media stream having relatively high favorability measures. When the urgency measure increases, the system selects points having relatively lower favorability measures.

摘要翻译： 一种同步媒体流的系统和方法包括确定紧急措施和有利度量措施。 紧急措施涉及媒体流当前不同步的程度。 优惠措施表明在特定时间点上的媒体流的破坏性或可能的注意力改变。 随着媒体流变得越来越不同步，紧急因素增加，并且系统寻找媒体流中可以添加或减少诸如视频帧或音频样本的单元以重新实现同步的位置。 当紧急措施处于较低值时，系统仅选择媒体流中具有较高适应度度量的点。 当紧急措施增加时，系统选择具有较低优惠措施的点。

公开(公告)号：US07567619B2

公开(公告)日：2009-07-28

申请号：US11191220

申请日：2005-07-27

申请人： Ankur Varma ,  Shankar Moni

发明人： Ankur Varma ,  Shankar Moni

IPC分类号： H04N7/12

CPC分类号： H04N19/86

摘要： Video deblocking can be implemented in video content processing and delivery environments when displaying decompressed/decoded video information. Discontinuities are identified and smoothed to reduce blockiness, for example at macroblock boundaries in conjunction with Moving Picture Expert Group (MPEG)-based schemes. In exemplary implementation(s), a client device detects discontinuities at or near block boundaries, determines which discontinuities are artificial, and smooths at least those discontinuities that are determined to be artificial. These actions may be accomplished using (i) one or more Laplacian of Gaussian (LoG) operations as applied to both an image and a quantization matrix and (ii) windowed comparisons between values and a threshold resulting from the LoG operations. Alternatively, these actions may be accomplished using a spatio-temporally varying filter. Additionally, in an MPEG context, intra image units may be deblocked using the former approach while non-intra image units may be deblocked using the latter approach.

摘要翻译： 当显示解压缩/解码的视频信息时，视频解锁可以在视频内容处理和传送环境中实现。 不连续性被识别和平滑以减少块效应，例如在与基于运动图像专家组（MPEG）的方案的宏块边界处。 在示例性实现中，客户端设备在块边界处或附近检测不连续性，确定哪些不连续性是人为的，并且平滑至少那些被确定为人为的不连续性。 可以使用（i）应用于图像和量化矩阵的一个或多个拉普拉斯高斯（LoG）操作来实现这些动作，以及（ii）值之间的窗口比较和由LoG操作产生的阈值。 或者，可以使用时空变化滤波器来实现这些动作。 另外，在MPEG上下文中，可以使用前一种方法去除帧内图像单元，而使用后一种方法可以解除非帧内图像单元。

公开(公告)号：US20050259745A1

公开(公告)日：2005-11-24

申请号：US11191131

申请日：2005-07-27

申请人： Ankur Varma ,  Shankar Moni

发明人： Ankur Varma ,  Shankar Moni

IPC分类号： H04N7/26 ,  H04N7/30 ,  H04N5/217 ,  H04N5/21

CPC分类号： H04N19/86

摘要： Video deblocking can be implemented in video content processing and delivery environments when displaying decompressed/decoded video information. Discontinuities are identified and smoothed to reduce blockiness, for example at macroblock boundaries in conjunction with Moving Picture Expert Group (MPEG)-based schemes. In exemplary implementation(s), a client device detects discontinuities at or near block boundaries, determines which discontinuities are artificial, and smooths at least those discontinuities that are determined to be artificial. These actions may be accomplished using (i) one or more Laplacian of Gaussian (LoG) operations as applied to both an image and a quantization matrix and (ii) windowed comparisons between values and a threshold resulting from the LoG operations. Alternatively, these actions may be accomplished using a spatio-temporally varying filter. Additionally, in an MPEG context, intra image units may be deblocked using the former approach while non-intra image units may be deblocked using the latter approach.

公开(公告)号：US07706415B2

公开(公告)日：2010-04-27

申请号：US10901575

申请日：2004-07-29

申请人： Ankur Varma ,  Andrew Wayne Walters ,  John Allen Tardif ,  Brian Lloyd Schmidt ,  Sajid Salim Topiwala

发明人： Ankur Varma ,  Andrew Wayne Walters ,  John Allen Tardif ,  Brian Lloyd Schmidt ,  Sajid Salim Topiwala

IPC分类号： H04J3/04

CPC分类号： G10L19/167 ,  G11B27/105 ,  G11B27/329 ,  G11B2220/2562

摘要： Systems and methods for providing multi-channel audio using a reduced amount of resources for the decoding process. A 5.1 channel audio stream is divided into three stereo streams. The packets from each of three stereo streams are multiplexed to create a pseudo-5.1 channel audio stream. The pseudo 5.1 channel audio stream is then decoded and demultiplexed at the output to create the output 5.1 channel audio sound. As such, the decoder resources only have decode a single pseudo 5.1 stream. This technique is equally applicable to 7.1 or other multi-channel formats.

摘要翻译： 用于为解码过程使用减少的资源量来提供多声道音频的系统和方法。 5.1声道音频流分为三个立体声流。 来自三个立体声流中的每一个的分组被复用以产生伪5.1声道音频流。 然后在输出处对伪5.1声道音频流进行解码和解复用以创建输出5.1声道音频声音。 这样，解码器资源仅对单个伪5.1流进行解码。 这种技术同样适用于7.1或其他多通道格式。

公开(公告)号：US07660351B2

公开(公告)日：2010-02-09

申请号：US11191204

申请日：2005-07-27

申请人： Ankur Varma ,  Shankar Moni

发明人： Ankur Varma ,  Shankar Moni

IPC分类号： H04N7/12 ,  G06K9/48

CPC分类号： H04N19/86

摘要： Video deblocking can be implemented in video content processing and delivery environments when displaying decompressed/decoded video information. Discontinuities are identified and smoothed to reduce blockiness, for example at macroblock boundaries in conjunction with Moving Picture Expert Group (MPEG)-based schemes. In exemplary implementation(s), a client device detects discontinuities at or near block boundaries, determines which discontinuities are artificial, and smooths at least those discontinuities that are determined to be artificial. These actions may be accomplished using (i) one or more Laplacian of Gaussian (LoG) operations as applied to both an image and a quantization matrix and (ii) windowed comparisons between values and a threshold resulting from the LoG operations. Alternatively, these actions may be accomplished using a spatio-temporally varying filter. Additionally, in an MPEG context, intra image units may be deblocked using the former approach while non-intra image units may be deblocked using the latter approach.

摘要翻译： 当显示解压缩/解码的视频信息时，视频解锁可以在视频内容处理和传送环境中实现。 不连续性被识别和平滑以减少块效应，例如在与基于运动图像专家组（MPEG）的方案的宏块边界处。 在示例性实现中，客户端设备在块边界处或附近检测不连续性，确定哪些不连续性是人为的，并且平滑至少那些被确定为人为的不连续性。 可以使用（i）应用于图像和量化矩阵的一个或多个拉普拉斯高斯（LoG）操作来实现这些动作，以及（ii）值之间的窗口比较和由LoG操作产生的阈值。 或者，可以使用时空变化滤波器来实现这些动作。 另外，在MPEG上下文中，可以使用前一种方法去除帧内图像单元，而使用后一种方法可以解除非帧内图像单元。

公开(公告)号：US07567618B2

公开(公告)日：2009-07-28

申请号：US11191131

申请日：2005-07-27

申请人： Ankur Varma ,  Shankar Moni

发明人： Ankur Varma ,  Shankar Moni

IPC分类号： H04N7/12

CPC分类号： H04N19/86

摘要： Video deblocking can be implemented in video content processing and delivery environments when displaying decompressed/decoded video information. Discontinuities are identified and smoothed to reduce blockiness, for example at macroblock boundaries in conjunction with Moving Picture Expert Group (MPEG)-based schemes. In exemplary implementation(s), a client device detects discontinuities at or near block boundaries, determines which discontinuities are artificial, and smooths at least those discontinuities that are determined to be artificial. These actions may be accomplished using (i) one or more Laplacian of Gaussian (LoG) operations as applied to both an image and a quantization matrix and (ii) windowed comparisons between values and a threshold resulting from the LoG operations. Alternatively, these actions may be accomplished using a spatio-temporally varying filter. Additionally, in an MPEG context, intra image units may be deblocked using the former approach while non-intra image units may be deblocked using the latter approach.

公开(公告)号：US20050281340A1

公开(公告)日：2005-12-22

申请号：US11191220

申请日：2005-07-27

申请人： Ankur Varma ,  Shankar Moni

发明人： Ankur Varma ,  Shankar Moni

IPC分类号： H04N7/26 ,  H04N7/30 ,  H04N7/12

CPC分类号： H04N19/86

摘要： Video deblocking can be implemented in video content processing and delivery environments when displaying decompressed/decoded video information. Discontinuities are identified and smoothed to reduce blockiness, for example at macroblock boundaries in conjunction with Moving Picture Expert Group (MPEG)-based schemes. In exemplary implementation(s), a client device detects discontinuities at or near block boundaries, determines which discontinuities are artificial, and smooths at least those discontinuities that are determined to be artificial. These actions may be accomplished using (i) one or more Laplacian of Gaussian (LoG) operations as applied to both an image and a quantization matrix it and (ii) windowed comparisons between values and a threshold resulting from the LoG operations. Alternatively, these actions may be accomplished using a spatio-temporally varying filter. Additionally, in an MPEG context, intra image units may be deblocked using the former approach while non-intra image units may be deblocked using the latter approach.

摘要翻译： 当显示解压缩/解码的视频信息时，视频解锁可以在视频内容处理和传送环境中实现。 不连续性被识别和平滑以减少块效应，例如在与基于运动图像专家组（MPEG）的方案的宏块边界处。 在示例性实现中，客户端设备在块边界处或附近检测不连续性，确定哪些不连续性是人为的，并且平滑至少那些被确定为人为的不连续性。 这些动作可以使用（i）应用于图像和量化矩阵的一个或多个拉普拉斯高斯（LoG）操作来实现，以及（ii）值之间的窗口比较和由LoG操作产生的阈值。 或者，可以使用时空变化滤波器来实现这些动作。 另外，在MPEG上下文中，可以使用前一种方法去除帧内图像单元，而使用后一种方法可以解除非帧内图像单元。

公开(公告)号：US20050262531A1

公开(公告)日：2005-11-24

申请号：US11191204

申请日：2005-07-27

申请人： Ankur Varma ,  Shankar Moni

发明人： Ankur Varma ,  Shankar Moni

IPC分类号： H04N7/26 ,  H04N7/30 ,  H04N7/025 ,  G06F13/00 ,  H04N5/445 ,  H04N7/10

CPC分类号： H04N19/86

摘要： Video deblocking can be implemented in video content processing and delivery environments when displaying decompressed/decoded video information. Discontinuities are identified and smoothed to reduce blockiness, for example at macroblock boundaries in conjunction with Moving Picture Expert Group (MPEG)-based schemes. In exemplary implementation(s), a client device detects discontinuities at or near block boundaries, determines which discontinuities are artificial, and smooths at least those discontinuities that are determined to be artificial. These actions may be accomplished using (i) one or more Laplacian of Gaussian (LoG) operations as applied to both an image and a quantization matrix and (ii) windowed comparisons between values and a threshold resulting from the LoG operations. Alternatively, these actions may be accomplished using a spatio-temporally varying filter. Additionally, in an MPEG context, intra image units may be deblocked using the former approach while non-intra image units may be deblocked using the latter approach.

摘要翻译： 当显示解压缩/解码的视频信息时，视频解锁可以在视频内容处理和传送环境中实现。 不连续性被识别和平滑以减少块效应，例如在与基于运动图像专家组（MPEG）的方案的宏块边界处。 在示例性实现中，客户端设备在块边界处或附近检测不连续性，确定哪些不连续性是人为的，并且平滑至少那些被确定为人为的不连续性。 可以使用（i）应用于图像和量化矩阵的一个或多个拉普拉斯高斯（LoG）操作来实现这些动作，以及（ii）值之间的窗口比较和由LoG操作产生的阈值。 或者，可以使用时空变化滤波器来实现这些动作。 另外，在MPEG上下文中，可以使用前一种方法去除帧内图像单元，而使用后一种方法可以解除非帧内图像单元。

公开(公告)号：US08467545B2

公开(公告)日：2013-06-18

申请号：US12403248

申请日：2009-03-12

申请人： Ankur Varma ,  Dinei A. Florencio

发明人： Ankur Varma ,  Dinei A. Florencio

IPC分类号： H04B15/00 ,  H04R29/00 ,  H04R3/00 ,  A61F11/06 ,  G10K11/16 ,  H03B29/00 ,  H03G3/20

CPC分类号： G10L2021/02087 ,  G10L2021/02166

摘要： Various embodiments reduce noise within a particular environment, while isolating and capturing speech in a manner that allows operation within an otherwise noisy environment. In one embodiment, an array of one or more microphones is used to selectively eliminate noise emanating from known, generally fixed locations, and pass signals from a pre-specified region or regions with reduced distortion.

公开(公告)号：US07064790B1

公开(公告)日：2006-06-20

申请号：US10165540

申请日：2002-06-07

申请人： Ankur Varma ,  Andrew Wayne Walters

发明人： Ankur Varma ,  Andrew Wayne Walters

IPC分类号： H04N7/01

CPC分类号： H04N7/012

摘要： The arrangements and procedures of this invention adaptively process video data. Specifically, at least first and second fields of an interlaced frame are deinterlaced to form intermediate progressive first and second frames. The first intermediate progressive frame includes scanlines of a first temporal instant. The second intermediate progressive frame includes scanlines of a second temporal instant. The first and second temporal instants are different from one another. The first and second intermediate progressive frames are independently resampled to form respective first and second resampled frames. Scanlines from the first and second resampled frames are interleaved to generate a resampled interlaced frame.

摘要翻译： 本发明的布置和程序自适应地处理视频数据。 具体地，隔行扫描帧的至少第一和第二场被去隔行扫描以形成中间渐进的第一和第二帧。 第一中间渐进帧包括第一时间瞬间的扫描线。 第二中间逐行帧包括第二时间瞬间的扫描线。 第一和第二时间瞬间彼此不同。 第一和第二中间渐进帧被独立地重新采样以形成相应的第一和第二重采样帧。 来自第一和第二重采样帧的扫描线被交织以产生重采样的隔行帧。