中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

86 records (took 0.027 seconds)

    FLEXIBLE RANGE REDUCTION
    41.
    发明申请
    FLEXIBLE RANGE REDUCTION 有权
    灵活范围减少

    公开(公告)号：US20110280303A1

    公开(公告)日：2011-11-17

    申请号：US13191335

    申请日：2011-07-26

    Applicant: Shankar Regunathan ,  Sridhar Srinivasan ,  Jie Liang ,  Chih-Lung Lin ,  Minghui Xia

    Inventor： Shankar Regunathan ,  Sridhar Srinivasan ,  Jie Liang ,  Chih-Lung Lin ,  Minghui Xia

    IPC: H04N7/28 ,  H04N11/02

    CPC classification number: H04N19/00145 ,  H04N19/137 ,  H04N19/16 ,  H04N19/196 ,  H04N19/46 ,  H04N19/51 ,  H04N19/61 ,  H04N19/70

    Abstract: Techniques and tools are described for flexible range reduction of samples of video. For example, an encoder signals a first set of one or more syntax elements for range reduction of luma samples and signals a second set of one or more syntax elements for range reduction of chroma samples. The encoder selectively scales down the luma samples and chroma samples in a manner consistent with the first syntax element(s) and second syntax element(s), respectively. Or, an encoder signals range reduction syntax element(s) in an entry point header for an entry point segment, where the syntax element(s) apply to pictures in the entry point segment. If range reduction is used for the pictures, the encoder scales down samples of the pictures. Otherwise, the encoder skips the scaling down. A decoder performs corresponding parsing and scaling up operations.

    Abstract translation: 描述了技术和工具，用于灵活地缩减视频样本。 例如，编码器用信号通知一个或多个语法元素的第一组，用于亮度样本的范围减小，并且为第二组一个或多个语法元素用于色度样本的范围缩小。 编码器分别以与第一语法元素和第二语法元素一致的方式选择性地缩小亮度样本和色度样本。 或者，编码器对入口点段的入口点标题中的范围缩小语法元素进行信号，其中语法元素适用于入口点段中的图像。 如果图像使用范围缩小，则编码器缩小图像的样本。 否则，编码器跳过缩小比例。 解码器执行相应的解析和放大操作。

    Flexible range reduction
    42.
    发明授权
    Flexible range reduction 有权
    弹性范围缩小

    公开(公告)号：US08014450B2

    公开(公告)日：2011-09-06

    申请号：US10989702

    申请日：2004-11-15

    Applicant: Shankar Regunathan ,  Sridhar Srinivasan ,  Jie Liang ,  Chih-Lung Lin ,  Minghui Xia

    Inventor： Shankar Regunathan ,  Sridhar Srinivasan ,  Jie Liang ,  Chih-Lung Lin ,  Minghui Xia

    IPC: H04N7/12

    CPC classification number: H04N19/00145 ,  H04N19/137 ,  H04N19/16 ,  H04N19/196 ,  H04N19/46 ,  H04N19/51 ,  H04N19/61 ,  H04N19/70

    Abstract: Techniques and tools are described for flexible range reduction of samples of video. For example, an encoder signals a first set of one or more syntax elements for range reduction of luma samples and signals a second set of one or more syntax elements for range reduction of chroma samples. The encoder selectively scales down the luma samples and chroma samples in a manner consistent with the first syntax element(s) and second syntax element(s), respectively. Or, an encoder signals range reduction syntax element(s) in an entry point header for an entry point segment, where the syntax element(s) apply to pictures in the entry point segment. If range reduction is used for the pictures, the encoder scales down samples of the pictures. Otherwise, the encoder skips the scaling down. A decoder performs corresponding parsing and scaling up operations.

    Abstract translation: 描述了技术和工具，用于灵活地缩减视频样本。 例如，编码器用信号通知一个或多个语法元素的第一组，用于亮度样本的范围减小，并且为第二组一个或多个语法元素用于色度样本的范围缩小。 编码器分别以与第一语法元素和第二语法元素一致的方式选择性地缩小亮度样本和色度样本。 或者，编码器对入口点段的入口点标题中的范围缩小语法元素进行信号，其中语法元素适用于入口点段中的图像。 如果图像使用范围缩小，则编码器缩小图像的样本。 否则，编码器跳过缩小比例。 解码器执行相应的解析和放大操作。

    Field start code for entry point frames with predicted first field
    43.
    发明授权
    Field start code for entry point frames with predicted first field 有权
    具有预测第一个字段的入口点帧的现场起始码

    公开(公告)号：US07852919B2

    公开(公告)日：2010-12-14

    申请号：US10989596

    申请日：2004-11-15

    Applicant: Regis J. Crinon ,  Thomas W. Holcomb ,  Shankar Regunathan ,  Sridhar Srinivasan

    Inventor： Regis J. Crinon ,  Thomas W. Holcomb ,  Shankar Regunathan ,  Sridhar Srinivasan

    IPC: H04N7/32 ,  H04N3/10

    CPC classification number: H04N19/44 ,  H04N19/70

    Abstract: A decoder receives a field start code for an entry point key frame. The field start code indicates a second coded interlaced video field in the entry point key frame following a first coded interlaced video field in the entry point key frame and indicates a point to begin decoding of the second coded interlaced video field. The first coded interlaced video field is a predicted field, and the second coded interlaced video field is an intra-coded field. The decoder decodes the second field without decoding the first field. The field start code can be followed by a field header. The decoder can receive a frame header for the entry point key frame. The frame header may comprise a syntax element indicating a frame coding mode for the entry point key frame and/or a syntax element indicating field types for the first and second coded interlaced video fields.

    Abstract translation: 解码器接收入口点关键帧的场起始码。 场起始码指示入口点关键帧中的第一编码隔行扫描视频字段之后的入口点关键帧中的第二编码隔行扫描视频字段，并且指示开始对第二编码交错视频字段进行解码的点。 第一编码隔行视频字段是预测字段，第二编码隔行视频字段是帧内编码字段。 解码器解码第二场而不解码第一场。 字段起始码可以后跟一个字段标题。 解码器可以接收入口点关键帧的帧头。 帧头可以包括指示用于入口点关键帧的帧编码模式的语法元素和/或指示第一和第二编码隔行视频字段的字段类型的语法元素。

    DC COEFFICIENT SIGNALING AT SMALL QUANTIZATION STEP SIZES
    44.
    发明申请
    DC COEFFICIENT SIGNALING AT SMALL QUANTIZATION STEP SIZES 有权
    直流系数小信号步进尺寸信号

    公开(公告)号：US20100246671A1

    公开(公告)日：2010-09-30

    申请号：US12815029

    申请日：2010-06-14

    Applicant: Chih-Lung Lin ,  Shankar Regunathan ,  Sridhar Srinivasan

    Inventor： Chih-Lung Lin ,  Shankar Regunathan ,  Sridhar Srinivasan

    IPC: H04N7/26

    CPC classification number: H04N19/18 ,  H04N19/124 ,  H04N19/126 ,  H04N19/136 ,  H04N19/137 ,  H04N19/17 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/44 ,  H04N19/46 ,  H04N19/61 ,  H04N19/625 ,  H04N19/70 ,  H04N19/91

    Abstract: Described tools and techniques relate to signaling for DC coefficients at small quantization step sizes. The techniques and tools can be used in combination or independently. For example, a tool such as a video encoder or decoder processes a VLC that indicates a DC differential for a DC coefficient, a FLC that indicates a value refinement for the DC differential, and a third code that indicates the sign for the DC differential. Even with the small quantization step sizes, the tool uses a VLC table with DC differentials for DC coefficients above the small quantization step sizes. The FLCs for DC differentials have lengths that vary depending on quantization step size.

    Abstract translation: 描述的工具和技术涉及在小量化步长下用于DC系数的信令。 技术和工具可以组合使用或独立使用。 例如，诸如视频编码器或解码器的工具处理指示DC系数的DC差分的VLC，指示DC差分的值细化的FLC以及指示DC差分的符号的第三代码。 即使使用较小的量化步长，该工具也会使用具有DC系数的直流差分的VLC表，其高于小量化步长。 用于DC差分的FLC具有随量化步长变化的长度。

    COMPUTATIONAL COMPLEXITY AND PRECISION CONTROL IN TRANSFORM-BASED DIGITAL MEDIA CODEC
    46.
    发明申请
    COMPUTATIONAL COMPLEXITY AND PRECISION CONTROL IN TRANSFORM-BASED DIGITAL MEDIA CODEC 有权
    基于变换的数字媒体编码器的计算复杂度和精度控制

    公开(公告)号：US20080198935A1

    公开(公告)日：2008-08-21

    申请号：US11772076

    申请日：2007-06-29

    Applicant: Sridhar Srinivasan ,  Chengjie Tu ,  Shankar Regunathan

    Inventor： Sridhar Srinivasan ,  Chengjie Tu ,  Shankar Regunathan

    IPC: H04N7/24

    CPC classification number: H04N21/6547 ,  H04N19/122 ,  H04N19/156 ,  H04N19/46 ,  H04N19/60

    Abstract: A digital media encoder/decoder includes signaling of various modes relating to computation complexity and precision at decoding. The encoder may send a syntax element indicating arithmetic precision (e.g., using 16 or 32-bit operations) of the transform operations performed at decoding. The encoder also may signal whether to apply scaling at the decoder output, which permits a wider dynamic range of intermediate data at decoding, but adds to computational complexity due to the scaling operation.

    Abstract translation: 数字媒体编码器/解码器包括在解码时与计算复杂性和精度有关的各种模式的信令。 编码器可以发送指示在解码时执行的变换操作的算术精度（例如，使用16或32位操作）的语法元素。 编码器还可以发信号是否在解码器输出端应用缩放，这允许解码时的中间数据的较宽的动态范围，但由于缩放操作而增加了计算复杂度。

    Slice-layer in video codec
    49.
    发明申请
    Slice-layer in video codec 有权
    视频编解码器中的切片层

    公开(公告)号：US20050053158A1

    公开(公告)日：2005-03-10

    申请号：US10933960

    申请日：2004-09-03

    Applicant: Shankar Regunathan ,  Pohsiang Hsu ,  Ce Wang ,  Chih-Lung Lin ,  Jie Liang ,  Sridhar Srinivasan

    Inventor： Shankar Regunathan ,  Pohsiang Hsu ,  Ce Wang ,  Chih-Lung Lin ,  Jie Liang ,  Sridhar Srinivasan

    IPC: H04N20060101 ,  H04N7/12 ,  H04N7/26 ,  H04N7/50

    CPC classification number: H04N19/86 ,  H04N19/105 ,  H04N19/107 ,  H04N19/166 ,  H04N19/174 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82

    Abstract: A video encoder/decoder utilizes a bistream syntax that provides an independently decodable, partial picture unit, which may be in the form of a unit containing one or more contiguous rows of macroblocks (called a slice). This slice layer provides a flexible combination of error-resilience and compression efficiency. The slice layer encodes an efficient addressing mechanism (e.g., a syntax element specifying a beginning macroblock row of the slice layer), as well as an efficient mechanism to optionally retransmit picture header information. The slice layer provides decoding and reconstruction independence by disabling all forms of prediction, overlap and loop-filtering across slice-boundaries. This permits a slice coded in intra-mode to be reconstructed error-free, irrespective of errors in other regions of the picture.

    Abstract translation: 视频编码器/解码器利用提供独立可解码的部分图像单元的双向串行语法，其可以是包含一个或多个连续的宏块行（称为切片）的单元的形式。 该切片层提供了弹性和压缩效率的灵活组合。 切片层对有效的寻址机制（例如，指定切片层的开始宏块行的语法元素）进行编码，以及有选择地重传图像头信息的机制。 切片层通过禁用跨片段的所有形式的预测，重叠和循环滤波来提供解码和重建独立性。 这允许在帧内编码的片段无错重构，而与图像的其他区域中的错误无关。

    Sound source localization using phase spectrum
    50.
    发明授权
    Sound source localization using phase spectrum 有权
    声源定位使用相位谱

    公开(公告)号：US09435873B2

    公开(公告)日：2016-09-06

    申请号：US13182449

    申请日：2011-07-14

    Applicant: Shankar Regunathan ,  Kazuhito Koishida ,  Harshavardhana Narayana Kikkeri

    Inventor： Shankar Regunathan ,  Kazuhito Koishida ,  Harshavardhana Narayana Kikkeri

    IPC: H04R3/00 ,  G01S3/80 ,  G01S3/808 ,  G01S3/82

    CPC classification number: G01S3/8083 ,  G01S3/8006 ,  G01S3/82 ,  H04R3/005

    Abstract: An array of microphones placed on a mobile robot provides multiple channels of audio signals. A received set of audio signals is called an audio segment, which is divided into multiple frames. A phase analysis is performed on a frame of the signals from each pair of microphones. If both microphones are in an active state during the frame, a candidate angle is generated for each such pair of microphones. The result is a list of candidate angles for the frame. This list is processed to select a final candidate angle for the frame. The list of candidate angles is tracked over time to assist in the process of selecting the final candidate angle for an audio segment.

    Abstract translation: 放置在移动机器人上的麦克风阵列提供多个音频信号通道。 接收到的一组音频信号被称为音频片段，其被分成多个帧。 对来自每对麦克风的信号的帧进行相位分析。 如果在帧期间两个麦克风处于活动状态，则为每个这样的麦克风生成候选角度。 结果是帧的候选角度列表。 处理该列表以选择帧的最终候选角度。 候选角度的列表随着时间被跟踪以帮助选择音频片段的最终候选角度的过程。

Patent Agency Ranking