Title:
【発明の名称】動画像信号の符号化・復号化方式
Document Type and Number:
Japanese Patent JP2570384
Kind Code:
B2
Abstract:
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.
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Inventors:
Mutsumi Ota
Application Number:
JP13347788A
Publication Date:
January 08, 1997
Filing Date:
May 30, 1988
Export Citation:
Assignee:
NEC
International Classes:
H04N19/00; 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; H04N5/85; (IPC1-7): H04N7/24; H04N5/92
Attorney, Agent or Firm:
Naoki Kyomoto (2 outside)