| 摘要 |
PURPOSE: A reproducing method using a controllable dummy read gate and a controller are provided to control a pulse width, a pulse generation position and the number of pulses of the dummy read gate. CONSTITUTION: A distance between a sector of a disc where a header is located and a target sector is calculated(330). When the distance is less than a predetermined value, a pulse width of a dummy read gate is increased(350). Pulses of the dummy read gate, which correspond to a defect sector of the disc, are removed. A dummy read gate whose pulse width has bee increased and in which the pulses corresponding to the defect sector have been removed is generated(360). A read gate for reading the target sector is generated. Data is reproduced according to the read gate.
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