利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

147 条记录 (耗时 0.04 秒)

    Method and apparatus for variable accuracy inter-picture timing specification for digital video encoding
    5.
    发明授权
    Method and apparatus for variable accuracy inter-picture timing specification for digital video encoding 有权
    用于数字视频编码的可变精度画面间时序规范的方法和装置

    公开(公告)号：US08737462B2

    公开(公告)日：2014-05-27

    申请号：US13340043

    申请日：2011-12-29

    申请人： Barin Geoffry Haskell ,  David William Singer ,  Adriana Dumitras ,  Atul Puri

    发明人： Barin Geoffry Haskell ,  David William Singer ,  Adriana Dumitras ,  Atul Puri

    IPC分类号： H04N7/12

    CPC分类号： H04N19/513 ,  G06T9/005 ,  H04N19/13 ,  H04N19/132 ,  H04N19/176 ,  H04N19/40 ,  H04N19/43 ,  H04N19/44 ,  H04N19/46 ,  H04N19/503 ,  H04N19/51 ,  H04N19/577 ,  H04N19/587 ,  H04N19/61 ,  H04N19/91 ,  H04N21/4305

    摘要： A method and apparatus for variable accuracy inter-picture timing specification for digital video encoding is disclosed. Specifically, the present invention discloses a system that allows the relative timing of nearby video pictures to be encoded in a very efficient manner. In one embodiment, the display time difference between a current video picture and a nearby video picture is determined. The display time difference is then encoded into a digital representation of the video picture. In a preferred embodiment, the nearby video picture is the most recently transmitted stored picture. For coding efficiency, the display time difference may be encoded using a variable length coding system or arithmetic coding. In an alternate embodiment, the display time difference is encoded as a power of two to reduce the number of bits transmitted.

    摘要翻译： 公开了一种用于数字视频编码的可变精度画面间时序规范的方法和装置。 具体地说，本发明公开了一种允许以非常有效的方式编码附近视频图像的相对定时的系统。 在一个实施例中，确定当前视频图像和附近视频图像之间的显示时间差。 然后将显示时间差编码为视频图像的数字表示。 在优选实施例中，附近的视频图像是最近发送的存储图像。 对于编码效率，可以使用可变长度编码系统或算术编码对显示时间差进行编码。 在替代实施例中，显示时间差被编码为2的幂，以减少发送的比特数。

    Method and apparatus for variable accuracy inter-picture timing specification for digital video encoding with reduced requirements for division operations
    6.
    发明授权
    Method and apparatus for variable accuracy inter-picture timing specification for digital video encoding with reduced requirements for division operations 有权
    用于数字视频编码的可变精度画面间定时规范的方法和装置，减少对分割操作的要求

    公开(公告)号：US08254461B2

    公开(公告)日：2012-08-28

    申请号：US11779668

    申请日：2007-07-18

    申请人： Barin Geoffry Haskell ,  David William Singer ,  Adriana Dumitras ,  Atul Puri

    发明人： Barin Geoffry Haskell ,  David William Singer ,  Adriana Dumitras ,  Atul Puri

    IPC分类号： H04N7/12

    CPC分类号： H04N19/426 ,  H04N19/51 ,  H04N19/52

    摘要： A method and apparatus for performing motion estimation in a digital video system is disclosed. Specifically, the present invention discloses a system that quickly calculates estimated motion vectors in a very efficient manner. In one embodiment, a first multiplicand is determined by multiplying a first display time difference between a first video picture and a second video picture by a power of two scale value. This step scales up a numerator for a ratio. Next, the system determines a scaled ratio by dividing that scaled numerator by a second first display time difference between said second video picture and a third video picture. The scaled ratio is then stored calculating motion vector estimations. By storing the scaled ratio, all the estimated motion vectors can be calculated quickly with good precision since the scaled ratio saves significant bits and reducing the scale is performed by simple shifts.

    摘要翻译： 公开了一种用于在数字视频系统中执行运动估计的方法和装置。 具体地，本发明公开了一种以非常有效的方式快速计算估计的运动矢量的系统。 在一个实施例中，通过将第一视频图像和第二视频图像之间的第一显示时间差乘以两个比例值的幂来确定第一被乘数。 这个步骤可以扩大一个比例的分子。 接下来，系统通过将所述缩放分子除以所述第二视频图像和第三视频图像之间的第二第一显示时间差来确定缩放比例。 然后存储计算运动矢量估计的缩放比例。 通过存储缩放比例，可以以高精度快速计算所有估计的运动矢量，因为缩放比例可以节省有效位，并且通过简单的移位来减小刻度。