Disk format detecting device and method

摘要

An optical disk reproducing apparatus having playback systems of CD and DVD containing their respective sync signals. The systems respectively have sync detectors (51, 522), and analyze a sync signal output from the sync detectors (521, 522) when a disk (20) is detected to be mounted. The CD playback system (513-515) is selectively driven when a CD sync signal is detected to perform a CD playback mode, and the DVD playback system (516-518) is selectively driven when a DVD sync signal is detected to perform a DVD playback mode. <IMAGE>