Patent ID: 6721250
Filing Date: 2004-04-13
Classification: G11B

Abstract:
A disk playback device comprising:a playback means for playing back data on a disk; an audio output means for outputting audio data as an audio signal externally to the disk playback device when the audio data is played back by said playback means; an audio level manipulation means for manipulating an output level of the audio signal which is outputted by said audio output means; a detection means for detecting a set value of said audio level manipulation means; and a rotation speed control means for controlling a rotation speed of the disk which is played back by said playback means, wherein said rotation speed control means is operable to control the rotation speed of the disk on the basis of the set value detected by said detection means, and wherein said rotation speed control means is operable to control the rotation speed of the disk on the basis of the set value detected by said detection means only when the audio signal is not outputted from said audio output means.