| 摘要 |
<p>PURPOSE:To generate a tracking error signal for eliminating the influence of a fitting error of a pair head by subtracting the tracking error signal containing a DC component in a prescribed rotary phase from an output value of a reproducing time difference detecting means for outputting the tracking error signal containing a DC component. CONSTITUTION:The track shift quantity of an AC component outputted from a DC component eliminating circuit 91, the track shift quantity of a DC component outputted from a DC error signal detecting circuit 92, and an output of a wobbling waveform generating circuit 37 are added by an adder 34. Accordingly, by driving an electromechanical converting element 32 by their composite signal, a tracking control system which is not influenced by a fitting error of a pair head can be constituted. In such a way, a tracking error signal from which a DC component is eliminated is obtained, and a tracking error signal which is not influenced by a fitting error of the pair head is obtained.</p> |
