An image signal encoding method, an image signal encoding apparatus, an image signal decoding method, an image signal decoding apparatus, and an image signal recording medium (method and apparatus for decoding image signal, apparatus for decoding image signal, image signal recording medium)

摘要

When coding an operation image, an intra coding area is distributed not in the whole screen such as a frame or a field but in a screen unit or less. Again, a flag indicating the structure is added. The image data encoded in accordance with the information of this flag is transmitted or recorded by changing the configuration of the data for high-speed reproduction. Therefore, when encoding the motion picture coded data, the area where the intra-coding is performed by using the multiplexed flag is coded to perform gentle fast forward and reverse playback. Accordingly, it is possible to realize an operation picture coding apparatus, a recording apparatus, a recording / transmission format (bit stream syntax) and a reproduction apparatus and an encoding apparatus which can smoothly perform fast forward and reverse reproduction of the motion picture data when fast reproduction is selected.