DVD是Digital Video Disc(数字视频光盘)的缩写,实际上DVD不仅可以存储影视节目,亦可以存储其它数据,因此近来把DigitalVideo Disc更名为DigitalVersatile Disc(数字多用光盘)。众所周知,任何一种数字影音技术都是以碟片为数据载体,所以盘片上记录的信息量将直接影响其播放效果。DVD技术正是以此为基础,在一张只有12cm的光盘上录制更多的数据,提高图像的清晰度和声音的听觉感受。在伴音方面,DVD没有像VCD那 DVD is an abbreviation of Digital Video Disc. In fact, DigitalVision Disc has recently been renamed as DigitalVersatile Disc because it can store not only video programs but also other data. As we all know, any kind of digital video technology is based on the disc as a data carrier, so the amount of information recorded on the disc will directly affect the playback. DVD technology is based on this, recording more data on a 12cm compact disc to improve the clarity of the image and sound auditory experience. In audio, DVD is not like that VCD