| 摘要 |
PURPOSE:To simplify a circuit constitution and to improve profitability, by selecting signals from two reproduction means, and supplying them to a single processing circuit. CONSTITUTION:When a compact disk player 1 and a video disk player 2 incorporated in a reproducing device are set at a driving mode and a stoppage mode respectively, a change-over switch 16 is connected to a lower side by a system controller 5, and a voice signal from a compact disk player via an amplifier 17, a digital processing circuit 18, and the processing circuit of a D/A converter 19 is outputted from a terminal 27. Similarly, when the players 1 and 2 are set at the stoppage mode and the driving mode respectively, the switch is switched to an upper side, and a reproduced voice signal via the same processing circuits from a video disk 21 is outputted from the terminal 27, and when both players 1 and 2 are set at reproduction modes, the switch 16 is switched to the lower side, and a switch 26 is switched corresponding to a compact disk and a video disk selection switches 3 and 4, and the voice signal from a corresponding disk is outputted. By using the single processing circuit commonly, the circuit constitution can be simplified, thereby, the profitability can be improved. |
