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    System and method for low-delay channel hopping
    6.
    发明申请
    System and method for low-delay channel hopping 审中-公开
    低延迟信道跳频的系统和方法

    公开(公告)号：US20050229221A1

    公开(公告)日：2005-10-13

    申请号：US10818335

    申请日：2004-04-05

    申请人： Louis Kerofsky ,  Shawmin Lei

    发明人： Louis Kerofsky ,  Shawmin Lei

    IPC分类号： H04N5/00 ,  H04N7/16 ,  H04N7/173

    CPC分类号： H04N21/42607 ,  H04N21/4331 ,  H04N21/4385 ,  H04N21/44222

    摘要： A system and method are provided for low-delay channel changes in a multicast/broadcast of compressed video. The method comprises: receiving a multicast/broadcast with a plurality of compressed video channels; buffering information from a plurality of channels; selecting a channel; and, decoding the selected channel in response to the buffered information. In some aspects, the method pre-identifies access points in the buffered information for each channel, prior to selecting the channel. Then, decoding the selected channel in response to the buffered information includes: accessing the buffered information at the pre-identified access point; and, decoding the selected channel, beginning at the access point. Alternately, access points are not pre-identified. Then, decoding the selected channel in response to the buffered information includes: discovering an access point in the information buffered for the selected channel subsequent to selecting the channel; and, decoding the selected channel, beginning at the discovered access point.

    摘要翻译： 提供了一种用于在压缩视频的多播/广播中的低延迟信道改变的系统和方法。 该方法包括：接收具有多个压缩视频信道的组播/广播; 从多个频道缓冲信息; 选择一个频道; 以及响应于所缓冲的信息来解码所选择的信道。 在某些方面，在选择信道之前，该方法预先标识每个信道的缓冲信息中的接入点。 然后，响应于所缓冲的信息解码所选择的信道包括：访问预先识别的接入点处的缓冲信息; 并且从接入点开始对所选频道进行解码。 或者，接入点不是预先识别的。 然后，响应于所缓冲的信息对所选择的信道进行解码，包括：在选择信道之后，发现为所选择的信道缓冲的信息中的接入点; 并从所发现的接入点开始对所选频道进行解码。

    Digital watermarking in a perceptually uniform domain
    7.
    发明授权
    Digital watermarking in a perceptually uniform domain 有权
    数字水印在感知统一的领域

    公开(公告)号：US06792129B1

    公开(公告)日：2004-09-14

    申请号：US09645105

    申请日：2000-08-23

    申请人： Wenjun Zeng ,  Shawmin Lei

    发明人： Wenjun Zeng ,  Shawmin Lei

    IPC分类号： G06K900

    CPC分类号： G06T1/0028 ,  G06T2201/0052 ,  G06T2201/0202

    摘要： Methods and apparatus for watermarking a digital media object, and for detecting watermarks, are presented. The basic concept underlying the disclosed approach is watermarking/detection in a transform space that allows the same level of watermarking to be applied to all samples. For instance, in one embodiment, a watermarking system first nonlinearly transforms the original signal to a perceptually uniform domain, and then embeds the watermark in this domain without varying the statistical properties of the watermark at each sample. At the watermark detector, a candidate image is transformed to the same perceptually uniform domain, and then correlated with the original watermark sequence. Under such conditions, it is shown that an optimal watermark detector can be derived. This approach is particularly attractive when the original image is unavailable at the detector, as it effectively prevents the image content from biasing the watermark detection score.

    摘要翻译： 提出了用于对数字媒体对象进行水印处理和检测水印的方法和装置。 所公开方法的基本概念是在允许将相同水平的水印应用于所有样本的变换空间中进行水印/检测。 例如，在一个实施例中，水印系统首先将原始信号非线性地变换成感知统一的域，然后将水印嵌入该域中而不改变每个样本处的水印的统计特性。 在水印检测器处，将候选图像转换为相同的感知统一域，然后与原始水印序列相关。 在这种条件下，可以得出最佳水印检测器。 当原始图像在检测器处不可用时，这种方法特别有吸引力，因为它有效地防止图像内容偏置水印检测分数。

    System and method for three-dimensional video coding
    9.
    发明授权
    System and method for three-dimensional video coding 失效
    用于三维视频编码的系统和方法

    公开(公告)号：US07650036B2

    公开(公告)日：2010-01-19

    申请号：US10817309

    申请日：2004-04-02

    申请人： Shawmin Lei ,  Shijun Sun

    发明人： Shawmin Lei ,  Shijun Sun

    IPC分类号： G06K9/36

    CPC分类号： H04N19/44 ,  H04N19/12 ,  H04N19/162 ,  H04N19/164 ,  H04N19/172 ,  H04N19/597 ,  H04N19/61 ,  H04N19/70

    摘要： Systems and methods are provided for receiving and encoding 3D video. The receiving method comprises: accepting a bitstream with a current video frame encoded with two interlaced fields, in a MPEG2, MPEG4, or H.264 standard; decoding a current frame top field; decoding a current frame bottom field; and, presenting the decoded top and bottom fields as a 3D frame image. In some aspects, the method presents the decoded top and bottom fields as a stereo-view image. In other aspects, the method accepts 2D selection commands in response to a trigger such as receiving a supplemental enhancement information (SEI) message, an analysis of display capabilities, manual selection, or receiver system configuration. Then, only one of the current frame interlaced fields is decoded, and a 2D frame image is presented.

    摘要翻译： 提供了用于接收和编码3D视频的系统和方法。 接收方法包括：以MPEG2，MPEG4或H.264标准接收具有用两个交错字段编码的当前视频帧的比特流; 解码当前帧顶部字段; 解码当前帧底域; 并且将解码的顶部和底部场作为3D帧图像。 在一些方面，该方法将解码的顶部和底部场作为立体视图图像。 在其他方面，该方法响应诸如接收补充增强信息（SEI）消息，显示能力分析，手动选择或接收机系统配置的触发来接受2D选择命令。 然后，仅解码当前帧隔行字段中的一个，并且呈现2D帧图像。

    DPCM with Adaptive Range and PCM Escape Mode
    10.
    发明申请
    DPCM with Adaptive Range and PCM Escape Mode 有权
    DPCM具有自适应范围和PCM退出模式

    公开(公告)号：US20080226183A1

    公开(公告)日：2008-09-18

    申请号：US11687553

    申请日：2007-03-16

    申请人： Shawmin Lei ,  Masayuki Yamaguchi ,  Akihisa Yamada ,  Shinichi Maeta

    发明人： Shawmin Lei ,  Masayuki Yamaguchi ,  Akihisa Yamada ,  Shinichi Maeta

    IPC分类号： G06K9/36 ,  G06K9/38

    CPC分类号： G06K9/38 ,  H04N19/124 ,  H04N19/159 ,  H04N19/182 ,  H04N19/90

    摘要： The embodiments of the present invention provide for methods, devices, and systems adapted to perform adaptive quantization processes. The adaptive quantization processes of the present invention are adapted to provide one or more adaptive quantization modes based on one or more previous pixels and their associated coding modes. The output of an adaptive quantization process may include coded data and a coding mode, indicating whether the coded data is pulse code modulation (PCM) data or differential pulse code modulation (DPCM) data.

    摘要翻译： 本发明的实施例提供了适于执行自适应量化处理的方法，设备和系统。 本发明的自适应量化处理适于基于一个或多个先前像素及其相关联的编码模式来提供一个或多个自适应量化模式。 自适应量化处理的输出可以包括编码数据和编码模式，指示编码数据是脉冲编码调制（PCM）数据还是差分脉冲编码调制（DPCM）数据。