RELEASE OF SCALABLE DIGITAL VIDEO COMPRESSION

摘要

PURPOSE: To obtain a byte stream by decompressing a scaled video string, taking out a frame including a basic unit from a compressed video stream with a personal computer system and processing, in accordance with the type and scaling. CONSTITUTION: A CPU 24 of a personal computer system 10 performs process processing, based on a program of system memory 28, fetches a basic unit (EU) from a compressed video stream of CDROM 28, generates a color resolution scale and a color depth scale in accordance with an instruction of a keyboard 16 and stores scaled EU in the memory 28. The EU is decompressed by the CPU 24, the type of invariant, uniformity, etc., is decided, and movement processing that corresponds to the scale of a pointer to a video buffer 38 is performed in accordance with a type. It becomes a byte stream in which the compression of a scaled compressed video stream is released.