Data-file storage, particularly for MPEG format files
    5.
    发明申请
    Data-file storage, particularly for MPEG format files 有权
    数据文件存储,特别是MPEG格式文件

    公开(公告)号:US20030026596A1

    公开(公告)日:2003-02-06

    申请号:US10177729

    申请日:2002-06-20

    IPC分类号: H03M013/00 H04N007/26

    摘要: A method of storing a data file, particularly in the MPEG format and including a flow of different frames, comprises a protection system for the data file based on a parameter stored in the data file. Advantageously, the storage method comprises selectively protecting the frames by storing parameters that are associated with corresponding different frames whose values are selected to provide a playing quality level requested by an end user. Also, a method is provided for decoding a data file, particularly of the MPEG type and including a flow of different frames, wherein the data file is stored per above.

    摘要翻译: 特别是以MPEG格式存储并包括不同帧流的数据文件的方法包括基于存储在数据文件中的参数的数据文件的保护系统。 有利地,存储方法包括通过存储与其值被选择的相应不同帧相关联的参数来选择性地保护帧,以提供终端用户请求的播放质量等级。 此外,提供了一种用于对数据文件进行解码的方法,特别是MPEG类型的数据文件,并且包括不同帧的流程,其中数据文件存储在上面。

    METHOD OF DETERMINING MOTION VECTORS FOR A BI-PREDICTIVE IMAGE BLOCK
    8.
    发明申请
    METHOD OF DETERMINING MOTION VECTORS FOR A BI-PREDICTIVE IMAGE BLOCK 有权
    确定用于BI预测图像块的运动矢量的方法

    公开(公告)号:US20140177719A1

    公开(公告)日:2014-06-26

    申请号:US14107309

    申请日:2013-12-16

    发明人: Byeong Moon JEON

    IPC分类号: H04N19/527 H04N19/51

    摘要: In one embodiment, the method includes determining, first and second reference pictures; obtaining a type of the first reference picture; and determining motion vectors of the bi-predictive image block based on the type of the first reference picture. The type is one of a long-term type and a short-term type, and characterizes a temporal distance of the first reference picture with respect to the bi-predictive block. The motion vectors of the bi-predictive image block are determined according to a first set of expressions if the first reference picture is of the short-term type, and according to a second set of expressions if the first reference picture is of the long-term type. The second set of expressions is different than the first set of expressions. The method further includes decoding, by the moving picture coding system, the bi-predictive image block based on the determined motion vectors.

    摘要翻译: 在一个实施例中,该方法包括确定第一和第二参考图片; 获得第一参考图片的类型; 以及基于所述第一参考图片的类型来确定所述双预测图像块的运动矢量。 该类型是长期类型和短期类型之一,并且表征第一参考图片相对于双预测块的时间距离。 如果第一参考图片是短期类型,则根据第一组表达式来确定双预测图像块的运动矢量,并且如果第一参考图片是长期类型,则根据第二组表达式, 长期类型。 第二组表达式与第一组表达式不同。 该方法还包括基于所确定的运动矢量,通过运动图像编码系统对双预测图像块进行解码。