| 摘要 |
PURPOSE:To perform stable playback operation which is tolerable to external vibration by supporting a disk playback mechanism on a player body with a conductive rubber member, and switching the servo loop band of a tracking servo system on the basis of the conductive rubber member. CONSTITUTION:At least either of vibration insulators 8 and 9 is made of the conductive member, and vibration is detected electrically on the basis of the displacement of this member. Then, vibration due to disturbance is detected and the control which switches the servo band automatically is performed on the basis of the detection output to obtain the tolerance to the vibration. The servo band is switched by setting stepwise characteristics of an equalizer inserted into the servo loop and selecting a proper characteristics, or using plural equalizers having different characteristics and selecting a proper equalizer. |
