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    • 5. 发明授权
    • Video decoding device and method, and program product therefor
    • 视频解码装置及方法及程序产品
    • US07460599B2
    • 2008-12-02
    • US10105215
    • 2002-03-26
    • Tadayoshi KonoMitsuhiko Ohta
    • Tadayoshi KonoMitsuhiko Ohta
    • H04B1/66
    • H04N19/112
    • A video decoding device which enables smooth reverse playback of 3:2 pulldown video streams. A video data storage unit stores pictures constituting a video stream that is being played back, where each picture consists of a first field and a second field. An attribute data storage unit stores attribute data which describes how each picture should be displayed. The attribute data includes a repeat-first-field flag for each picture. When playing back the video stream in a reverse direction, a reverse playback unit determines whether the repeat-first-field flag is set or cleared, and reads out the first and second fields of each picture in the same order as that in forward playback mode if the repeat-first-field flag is set. If the repeat-first-field flag is cleared, it reads out the first and second fields in the opposite order to that in the forward playback mode.
    • 一种视频解码装置,能够平滑地反转3:2下拉视频流。 视频数据存储单元存储构成正在播放的视频流的图像,其中每个图像由第一场和第二场组成。 属性数据存储单元存储描述每个图像应如何显示的属性数据。 属性数据包括每个图片的重复首字段标志。 当反向播放视频流时,反向重放单元确定是否设置或清除重复首字段标志,并且以与正向重放模式中相同的顺序读出每个图片的第一和第二字段 如果重复首字段标志被设置。 如果重复第一场标志被清除,它将以与正向重放模式相反的顺序读出第一和第二场。