| 摘要 |
<p>PURPOSE:To accurately inform of whether a tracking is in the optimum state or not for a user by displaying that the tracking is fixed at the reproducing time. CONSTITUTION:A displaying means 18 displaying a tracking being fixed is provided. According to the start of the reproduction, the tracking value of the reproduction signal becoming max. is detected, and while the tracking is fixed at the optimum value by the operation of an automatic tracking device part an LED 18 lights with constant current driving through an LED driving circuit 17 based on the command from a microcomputer 16. And at the time when transferring from a reproduction mode to stoppage mode the microcomputer 16 sends a control command to an LED driving circuit 17 so as to stop the constant current driving of the LED 18, i.e., to light out. The tracking is thus fixed at the optimum value and a user can accurately know of good S/N of the reproduction signal and voice wow and flutter being obtd.</p> |
