Image data decoder for still and moving picture data

摘要

An image data decoder decodes moving picture data and still MPEG or JPEG data alternately with each other. The decoder decodes the moving picture data without an interval between decoding adjacent macro block lines each including sixteen lines, thereby increasing the time interval between adjacent picture frames. The decoder decodes several slices or several macro block lines in the still MPEG data for the increased time interval without an additional data decoder.