Processing digital video data

摘要

A digital video signal transmitter allows a high quality and smooth dynamic image to be reproduced on the receiving side even with a transmission medium having a low transmission rate. Background plane data representing a still image of a background video image and one or more motion plane data representing still images of respective objects moving on the background image are separated from the input digital video signal. The separated background plane data and each motion plane data are stored individually in memories (23BG and 23A1 to 23An). Change data of the still images stored as the motion plane data is detected based on the input digital video signal and outputs of the memories (23BG and 23A1 to 23An) and is compressed and coded by a coding means (26). Still image data of the plurality of plane data of the memories (23BG and 23A1 to 23An) and the change information from the coding means (26) are transmitted. <IMAGE>