Motion picture decoding system

摘要

In a motion picture decoding system, forward and reverse reproduction is carried out smoothly at a high speed without increasing an operation speed for decoding. When high speed reproduction from a record medium containing motion picture coded data is selected, a rate of data input is controlled so that a speed for reading from the record medium to a buffer (22) is increased. Motion picture coded data is fetched from the buffer (22) to demultiplexing means (23). The fetched data is separated into picture data of frames to be decoded and picture data of frames to be abandoned at constant frame interval. Only the picture data of the frames to be decoded is sent to a downward stage, and is decoded at a speed equal to that for an ordinary reproduction. Thereby, high-speed reproduction in forward and reverse directions can be executed without increasing a speed of the decoding operation. <IMAGE>