| 摘要 |
PURPOSE:To attain remote control, manual changeover of a monitor switch as well as automatic switching, by switching the monitor switch to the source or tape side with the operation of a recording operating button at the recording state. CONSTITUTION:The operation when the monitor switch 16 is switched automatically is explained. A control signal is applied to a pulse generating circuit from a system control circuit by depressing the recording operating button, and one- shot pulse signal is generated. This pulse signal is applied to an AND circuit 22, whose gate is controlled depending on the level ''1'', ''0'' of an output of a flip- flop circuit 33. That is, when the output of the flip-flop circuit 33 goes to ''1'', that is, the monitor switch 16 is selected to the contact T position, the gate is opened. An output signal of the AND circuit 22 is applied to the flip-flop circuit 33 via an OR circuit 24, the output is inverted to be ''0''. Thus, the monitor switch 16 is changed over to the contact S position. |
