Indicating picture usefulness for playback optimization
    103.
    发明授权
    Indicating picture usefulness for playback optimization 有权
    指示图片对播放优化的有用性

    公开(公告)号:US08875199B2

    公开(公告)日:2014-10-28

    申请号:US11831916

    申请日:2007-07-31

    摘要: In one embodiment the invention provides a method for outputting auxiliary information for use in playing back a video sequence, the method comprising obtaining a measure of usefulness of a particular picture for playing back the video sequence, wherein the measure of usefulness indicates a performance of playing back the video sequence if the particular picture is available in a decoded state at a time of playback versus the particular picture not being available in a decoded state at a time of playback; determining a position in a data stream that includes the video sequence; and storing the auxiliary information at the determined position in the data stream.

    摘要翻译: 在一个实施例中,本发明提供了一种用于输出用于播放视频序列的辅助信息的方法,所述方法包括获得用于播放视频序列的特定图像的有用性的度量,其中所述有用度量指示播放的演奏 如果特定图像在重放时的解码状态下可用,而在回放时在解码状态下不能使用特定图像,则返回视频序列; 确定包括视频序列的数据流中的位置; 以及将所述辅助信息存储在所述数据流中的所确定的位置。

    Receiver for accelerating channel change time
    104.
    发明授权
    Receiver for accelerating channel change time 有权
    接收器用于加速频道切换时间

    公开(公告)号:US08683515B2

    公开(公告)日:2014-03-25

    申请号:US12277584

    申请日:2008-11-25

    IPC分类号: H04N5/445

    摘要: In one embodiment, a receiver for an accelerated channel change is provided. The receiver receives a first version of a video stream for a first channel and causes display of video for the first version of the video stream for the channel. A second version of a video stream is received upon a channel change to a second channel, the second version including non-discardable pictures from the first version of the video stream. The receiver displays video for the second version of the video stream for the second channel. When a transition point is reached in the first version of the video stream for the second channel, a first version of a video stream for the second channel can be displayed.

    摘要翻译: 在一个实施例中,提供了一种用于加速信道改变的接收机。 接收器接收用于第一信道的视频流的第一版本,并且导致用于该频道的视频流的第一版本的视频的显示。 在频道切换到第二频道时接收视频流的第二版本,第二版本包括来自视频流的第一版本的不可丢弃画面。 接收机显示用于第二通道的视频流的第二版本的视频。 当在第二通道的视频流的第一版本中达到转换点时,可以显示用于第二通道的视频流的第一版本。

    System and method for improving quality of displayed picture during trick modes
    105.
    发明授权
    System and method for improving quality of displayed picture during trick modes 有权
    在特技模式下提高显示画面质量的系统和方法

    公开(公告)号:US08600217B2

    公开(公告)日:2013-12-03

    申请号:US10891318

    申请日:2004-07-14

    IPC分类号: H04N9/80 H04N5/765 H04N5/783

    CPC分类号: H04N5/765

    摘要: A video decompression system and method are disclosed. In one preferred embodiment, the video decompression system comprises a memory with logic, and a processor configured with the logic to receive a compressed video stream that includes frame pictures and detect a scan mode indicator in the compressed video stream, wherein the scan mode indicator indicates whether a progressive scan format was used during the creation of the frame pictures.

    摘要翻译: 公开了视频解压缩系统和方法。 在一个优选实施例中,视频解压缩系统包括具有逻辑的存储器和配置有接收压缩视频流的逻辑的处理器,该压缩视频流包括帧画面并检测压缩视频流中的扫描模式指示符,其中扫描模式指示符指示 在创建帧图像期间是否使用逐行扫描格式。

    Methods and systems for signaling chroma information in video
    106.
    发明授权
    Methods and systems for signaling chroma information in video 有权
    视频中信号色度信息的方法和系统

    公开(公告)号:US08442124B2

    公开(公告)日:2013-05-14

    申请号:US11532415

    申请日:2006-09-15

    IPC分类号: H04B1/66 H04N7/12

    摘要: Embodiments of systems and methods for signaling chroma information for a picture in a compressed video stream are provided. One system embodiment, among others, comprises a memory with logic, and a processor configured with the logic to provide a compressed video stream that includes a picture having chroma samples and luma samples, and provide in the compressed video stream a flag for signaling information corresponding to the location of the chroma samples in relation to the luma samples in the picture, wherein a first defined flag value indicates default locations of the chroma samples in relation to the luma samples in the picture, wherein a second defined flag value indicates a presence in the compressed video stream of auxiliary chroma information corresponding to relative locations of the chroma samples to the luma samples in the picture, and wherein the number of chroma samples in the picture implied by the first defined flag value is equal to the number of chroma samples in the picture implied by the second defined flag value. Other embodiments for signaling chroma information for a picture in a compressed video stream are included herein.

    摘要翻译: 提供了用于在压缩视频流中为图像信号发送信号的系统和方法的实施例。 一个系统实施例,其中包括具有逻辑的存储器,以及处理器,配置有逻辑以提供包括具有色度样本和亮度采样的图像的压缩视频流,并且在压缩视频流中提供对应于信号的信号的标志 到相关于图片中的亮度样本的色度样本的位置,其中第一定义的标记值指示相关于图片中的亮度样本的色度样本的默认位置,其中第二定义的标志值指示存在于 所述辅助色度信息的压缩视频流对应于所述色度样本相对于所述图像中的所述亮度样本的相对位置,并且其中由所述第一定义标志值隐含的所述图像中的色度采样数目等于所述色度样本的数量 第二个定义的标志值隐含的图片。 本文中包括用于在压缩视频流中为图像发送色度信息的其他实施例。

    Transcoding for systems operating under plural video coding specifications
    108.
    发明授权
    Transcoding for systems operating under plural video coding specifications 有权
    在多种视频编码规范下运行的系统的代码转换

    公开(公告)号:US08300696B2

    公开(公告)日:2012-10-30

    申请号:US12180501

    申请日:2008-07-25

    IPC分类号: H04N7/12

    CPC分类号: H04N19/40 H04N19/51 H04N19/57

    摘要: A system and method that computes a threshold based on an average sum of absolute residual (SAR) values and a standard deviation, each SAR corresponding to the sum of absolute values of the residual signal of a non-intra encoded macroblock in a frame of a first video stream encoded according to a first video specification, decodes the macroblocks of the frame, compares a SAR of one of the macroblocks to the threshold, the one of the macroblocks having a first motion vector; and provides the first motion vector for encoding the one of the macroblocks according to a second video specification if the SAR of the one of the macroblocks is less than the threshold.

    摘要翻译: 基于绝对残差(SAR)值和标准偏差的平均和计算阈值的系统和方法,每个SAR对应于帧内的非帧内编码宏块的残差信号的绝对值之和 根据第一视频指定编码的第一视频流解码帧的宏块,将宏块之一的SAR与阈值进行比较,所述宏块中的一个具有第一运动矢量; 并且如果宏块之一的SAR小于阈值,则提供用于根据第二视频指定对所述宏块之一进行编码的第一运动矢量。