摘要 |
PURPOSE:To directly perform the dubbing recording of an RF signal reproduced from a master disk side on a slave disk side and to suppress the lowering of an S/N and picture quality, by controlling a rotational phase on the slave side by using a reference signal fixed and delayed from the master disk side. CONSTITUTION:When the dubbing recording of information is performed from a master disk 17 to a slave disk 18, system controls 35 and 45 in a reproducing system and a recording system are connected via interface circuit 36, and bidirectional control is available. A dubbing connection signal (a) is inputted from the control 45 to a recording control circuit 32 and a reference signal control circuit 34, and the circuit 32 selects the RF signal inputted from a signal processing circuit 30, and outputs it to a laser driving circuit 33. Also, similarly, the circuit 34 selects a horizontal synchronizing signal inputted from a delay circuit 29, not the signal from a reference signal generation circuit 39, and outputs it to a motor control circuit 41. And a disk 18 is rotated fitting to a phase at the circuit 34 shifted by the delay time of the circuit 29 from the rotational phase of the disk 17.
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