RATE CONTROL FOR TWO-PASS ENCODER USING ADAPTIVE QUANTIZATION PARAMETERS
    21.
    发明申请
    RATE CONTROL FOR TWO-PASS ENCODER USING ADAPTIVE QUANTIZATION PARAMETERS 有权
    使用自适应量化参数的两通编码器的速率控制

    公开(公告)号:US20110150076A1

    公开(公告)日:2011-06-23

    申请号:US12645702

    申请日:2009-12-23

    IPC分类号: H04N7/26

    摘要: A two-pass encoder determines a quantization parameter (QP) value to control an actual number of bits consumed in a second encoding pass. The two-pass encoder includes a first encoding module, a rate control module and a second encoding module. The first encoding module includes a circuit configured to perform a first encoding pass to encode input video sequences. The rate control module is configured to determine R, a target bit rate for a picture in the second encoding pass, and α, a variable dependent on a QP value range, a picture type, and complexity. Q, a QP value for the picture or an MB of the picture in the second encoding pass, is also determined based on R and α. The second encoding module is configured to use Q to encode the picture or the MB of the picture in the input video sequence in the second encoding pass to form an output bitstream. The rate control module is further configured to update α to encode a next picture or a next MB of the picture in the second encoding pass.

    摘要翻译: 双通道编码器确定量化参数(QP)值以控制在第二编码通过中消耗的实际位数。 双通编码器包括第一编码模块,速率控制模块和第二编码模块。 第一编码模块包括被配置为执行编码输入视频序列的第一编码遍的电路。 速率控制模块被配置为确定R是第二编码通过中的图像的目标比特率,α是取决于QP值范围,图像类型和复杂度的变量。 Q,也基于R和α来确定图像的QP值或第二编码遍中的图像的MB。 第二编码模块被配置为在第二编码遍中使用Q对输入视频序列中的图像或图像的MB进行编码以形成输出比特流。 速率控制模块还被配置为更新α以对第二编码遍中的图像的下一个图像或下一个MB进行编码。

    CREATING CHANNEL SEQUENCE SEGMENTS FOR FAST CHANNEL CHANGE IN IPTV
    23.
    发明申请
    CREATING CHANNEL SEQUENCE SEGMENTS FOR FAST CHANNEL CHANGE IN IPTV 有权
    为IPTV快速频道更改创建频道序列部分

    公开(公告)号:US20100125883A1

    公开(公告)日:2010-05-20

    申请号:US12270990

    申请日:2008-11-14

    IPC分类号: H04N7/173

    摘要: Embodiments of the present invention are methods for selecting, out of a lineup of IPTV channels, a subset of channels for caching. The methods take into account viewers' tendency to walk through the channels that lie between their current channel and their desired channel if that walking distance is short, and, alternatively, viewers' tendency to jump to a distant channel. Accordingly, embodiments of the present invention include any channel selection method which selects for caching any number of channels less than the entire lineup, and where at least two of those channels form a segment of adjacent channels. Other embodiments include methods which rely upon specific extrinsic data, e.g., IGMP and EPG information, for selecting a subset of channels to be cached.

    摘要翻译: 本发明的实施例是用于从IPTV频道的阵容中选择用于高速缓存的信道子集的方法。 这些方法考虑到观众倾向于通过位于其当前频道和所需频道之间的频道,如果步行距离短,或者观众倾向于跳到遥远的频道。 因此,本发明的实施例包括任何频道选择方法,其选择用于缓存小于整个阵容的任何数量的信道,并且其中这些信道中的至少两个形成相邻信道的分段。 其他实施例包括依赖于特定外在数据(例如IGMP和EPG信息)的方法,用于选择要缓存的信道的子集。

    Macroblock level adaptive frame/field coding for digital video content
    24.
    发明授权
    Macroblock level adaptive frame/field coding for digital video content 有权
    用于数字视频内容的宏块级自适应帧/场编码

    公开(公告)号:US07310377B2

    公开(公告)日:2007-12-18

    申请号:US11027656

    申请日:2004-12-30

    IPC分类号: H04B1/66

    摘要: A method and system of encoding and decoding digital video content. The digital video content comprises a stream of pictures which can each be intra, predicted, or bi-predicted pictures. Each of the pictures comprises macroblocks that can be further divided into smaller blocks. The method entails encoding and decoding each of the smaller blocks in each picture in said stream of pictures in either frame mode or in field mode.

    摘要翻译: 数字视频内容的编码和解码方法和系统。 数字视频内容包括可以是帧内,预测或双预测图像的图像流。 每个图像包括可以进一步分割成较小块的宏块。 该方法需要在帧模式或场模式下对所述图像流中的每个图像中的每个较小块进行编码和解码。

    Method and apparatus for providing motion estimation with weight prediction
    28.
    发明申请
    Method and apparatus for providing motion estimation with weight prediction 审中-公开
    用于通过重量预测提供运动估计的方法和装置

    公开(公告)号:US20060146932A1

    公开(公告)日:2006-07-06

    申请号:US11026404

    申请日:2004-12-30

    摘要: The present invention discloses an apparatus and method for providing a motion estimation method with weight prediction that requires less memory and computation cycles. In one embodiment, the weight is applied to pixels of a current slice or picture instead of the reference picture. In doing so, the number of processing cycles is significantly reduced while retaining the benefits of implementing a motion estimation method with weight prediction.

    摘要翻译: 本发明公开了一种用于提供具有需要更少存储器和计算周期的权重预测的运动估计方法的装置和方法。 在一个实施例中,权重被施加到当前片或图像的像素而不是参考图像。 在这样做时,处理周期的数量显着减少,同时保持实施具有重量预测的运动估计方法的好处。