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最近一个时期,世界上出现了多媒体光盘(或称数字视盘—Digital Video Disc-DVD)标准的竞争局面。这是因为世界各有关大厂都想抢占这一未来的、极大的市场。无疑,多媒体CD(或DVD)将很快会替代家用磁带录像机和其它普及应用的录像机,甚至会替代一些专用录像机和摄录机中的磁带录像机。 菲利浦和索尼公司于94年提出了他们的5英寸CD盘的规范。这种盘是单面的,存储数据量为3.7GB。当采用MPEG-2的图象信号时,可以存储135分钟的图象节目和多路压缩声音及字幕信号。 此后,由东芝(Toshiba Corp.)、时代华纳(Time Warnet
In recent times, there has been a competition in the world of multimedia discs (or digital video disc-DVD) standards. This is because the world’s major manufacturers want to seize this future, a huge market. Undoubtedly, multimedia CDs (or DVDs) will soon replace VTRs and other popular video recorders and will even replace tape recorders in some dedicated video recorders and camcorders. Philips and Sony introduced specifications for their 5-inch CD-ROMs in 1994. This disk is single-sided, the amount of data storage is 3.7GB. When using MPEG-2 image signal, you can store 135 minutes of video programs and multiple compressed audio and subtitle signals. Since then, Toshiba Corp., Time Warnet