DATA CODING/DECODING METHOD AND APPARATUS, AND CODED DATA RECORDING MEDIUM.

摘要

PSM data is detected by a PSM detector 40 from MPEG stream data read out by a pickup 2 and then is supplied to a control circuit 6. In a special reproduction mode, the control circuit 6 controls the pickup 2 in a manner to selectively read out the stream data ranging from an I-picture to a succeeding second P-picture in the PSM data. A further control action is so executed that the video data included in the readout stream data is separated by a demultiplexer, and merely the I- and P-pictures are decoded by a pircture header detector 34. The picture data thus decoded are written in a frame memory bank 16 and then are read out therefrom in a display order to be displayed on a display device 18.