随着数字电视的发展,从电视演播室至整个电视台系统,都应由统一的国际数字编码标准来取代现行的PAL、NTSC、SECAM制这三种互不兼容的模拟电视系统。考虑到今后二、三十年电视技术的发展,确定一种世界范围内统一的数字视频编码标准是很有必要的。为此,国际无线电咨询委员会(CCIR) With the development of digital television, from the television studio to the entire television station system, the current international standards of PAL, NTSC and SECAM should replace the three incompatible analog TV systems by a unified international digital coding standard. Considering the development of television technology in the next two or three decades, it is necessary to determine a unified digital video coding standard worldwide. To this end, the International Radio Consultative Committee (CCIR)