不久前，日美联合宣布，将联合开发统一标准的ＤＶＤ影碟防盗版技术。ＤＶＤ影碟在理论上可以无限制地复制高质量的画面和声音，因此，电影行业强烈要求电器生产厂家开发防盗版技术，保护其著作权。ＤＶＤ影碟是以计算机能识别的数字形式存储画面和声音的，也就是把画面和... Not long ago, Japan and the United States announced that they will jointly develop a unified standard DVD anti-piracy technology. DVD discs theoretically reproduce high-quality pictures and sound without any restrictions, so the movie industry strongly demands that electrical manufacturers develop anti-piracy technologies and protect their copyrights. DVD video is a computer-readable digital form to store pictures and sounds, that is, the screen and ...