| 摘要 |
PURPOSE:To reproduce disc records without malfunction normally, by using a noise reduction circuit incorporated. CONSTITUTION:With a moving contact (d) of switches S2-1-S2-5 connected to a fixed contact (A), recording or reproduction is made by using a noise reduction circuit 5, and with the moving contact (d) connected to a fixed contact (b), the recording or reproduction is made by using a noise reduction circuit 6. With the contact (d) connected to a fixed contact (c), a signal inputted to an external input terminal 3 is decoded at the noise reduction circuit 6 and applied to an output terminal 7. This operation can be made from the state on the way of recording or reproduction through the use of the circuit 5 or 6, and since this operation can be made from the stopping state, when the switches S2-1-S2-5 are changed over, muting can automatically be released, allowing to avoid inconvenience for the operation. |
