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21. 发明授权

US4942465A Method of coding a digital video signal for reverse reproduction of pictures 失效
标题翻译：编码数字视频信号以进行图像反向再现的方法
公开(公告)号：US4942465A
公开(公告)日：1990-07-17
申请号：US358951
申请日：1989-05-30
申请人： Mutsumi Ohta
发明人： Mutsumi Ohta
IPC分类号： H04N19/00 , H04N5/85 , H04N5/92 , H04N5/926 , H04N19/107 , H04N19/134 , H04N19/139 , H04N19/46 , H04N19/50 , H04N19/503 , H04N19/51 , H04N19/513 , H04N19/59 , H04N19/593 , H04N19/60 , H04N19/61 , H04N19/70
CPC分类号： H04N19/51 , H04N5/9262 , H04N5/85
摘要： On subjecting a digital video signal of successive pictures to redundancy reduction coding, a mode signal is produced which indicates, as the redundancy reduction coding, a selected one of interframe coding and intraframe coding. The digital video signal is selectively subjected to the selected one of the interframe and the intraframe coding in response to the mode signal. A particular picture element of a current picture is subjected to the intraframe coding when the mode signal indicates that the particular picture element should be subjected to the interframe coding and that a corresponding picture element of a following picture following the current picture should be subjected to the intraframe coding. The mode signal and results of the interframe and the intraframe coding are multiplexed into a multiplexed signal. When a motion-compensated coding is used instead of the interframe coding, a specific picture element of the current picture is subjected to the intraframe coding when the mode signal indicates that the specific picture element should be subjected to the motion-compensated coding and furthermore when the specific picture element has no relation to a movement represented by each of motion vectors which are used in carrying out the interframe coding on the picture elements of the following picture.
摘要翻译：在对连续图像的数字视频信号进行冗余缩减编码时，产生模式信号，其指示作为冗余缩减编码的帧间编码和帧内编码中的所选择的一个。响应于模式信号，数字视频信号被选择性地受到帧间和帧内编码中的所选择的一个。当模式信号指示特定图像元素应当进行帧间编码时，当前图像的特定图像元素经受帧内编码，并且应当对当前图像之后的后续图像的对应图像元素进行帧内编码。模式信号和帧间结构以及帧内编码被复用为复用信号。当使用运动补偿编码而不是帧间编码时，当模式信号指示特定图像元素应当进行运动补偿编码时，当前图像的特定图像元素经受帧内编码，而且当特定图像元素与用于对后续图像的图像元素执行帧间编码所使用的每个运动矢量表示的移动无关。

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