DESC: The DVD-V630 allows you to enjoy playback of three discs in succession or to simultaneously preprogram playback of tracks from different discs. When one disc is in play, you can open the tray and exchange one or both of the waiting discs, making it possible to switch smoothly from one song to another even if they are on separate discs. Home Karaoke has never been this convenient. Karaoke features include Digital Key Control and Digital Echo. A picture that stays sharp and clear right out to the corners of the screen has long been a desire of video producers and viewers alike. Component video output is a feature that realizes this goal by separately outputting three types of video signal recorded in the DVD format - brightness (Y) and color difference (PB and PR) - thereby allowing the signal to be transmitted without cross-interference. When used with a high-performance monitor, this results in sharp pictures free from edge and corner distortion.