| 摘要 |
PURPOSE:To eliminate a drive of a DC motor for feeding for not long time longer than required even if a tracking error signal is disordered by muting the output of a comparator at every prescribed period. CONSTITUTION:Comparators 2, 3 input a tracking signal from a tracking servo circuit 25 for controlling a pickup 22, and output signals when the pickup 22 tilts at the outer or inner peripheral side of disc-shaped information recording medium 21. A control signal of H level is applied to a terminal 6 or 7 or control signals of H and L levels are alternately applied to the terminal 7 or 6 at normal reproducing time. A controller 4 supplies the output of the comparator 3 or 2 to the control logic input terminal of a motor drive circuit 11 only when the control signal is H level. |
