| 摘要 |
<p>PURPOSE:To obtain easily the reproduction mode corresponding to the recording mode, by securing an automatic recording of the control singal of the noise reduction and the like in the section where no aural signal exists and then detecting automatically the control signal in the reproduction mode to then turn it into the reduction mode. CONSTITUTION:The noise reduction mode selection switch 3 is changed over during the recording, and thus the aural signal detecting circuit 13 detects the presence or absence of the aural signal to give a control to the transistor 20 of the control signal supply circuit 14. Then an automatic detection is give between the nonrecord section and the aural record section, and these sections are recorded on the tape 23. On the other hand, the reproduction mode setting circuit consisting of the flip-flop 45 plus the transistors 35 and 36 is installed into the reproducing circuit during the reproduction. Thus the nonrecord section can be detected automatically to select the noise reduction reproduction mode. Accordingly, the desired mode reproduction is assured without paying any special attention during the reproduction, thsu enhancing the controllability.</p> |
