| 摘要 |
<p>PURPOSE:To detect easily the tail end part of a recording signal by utilizing a program searching function, by recording a program searching detecting signal to not only a recording start part of a signal but also a recording end part of the signal. CONSTITUTION:When an output of a sound recording control terminal R of a control device 4 is switched to a recording state from other state, an output of a monostable multivibrator 6 is inverted only a constant interval of time. An output of an oscillator 3 is inputted to a magnetic head 1 through an AND circuit 5. When the recording state is inverted to other state, a monostable multivibrator 7 is triggered, and its output is inputted to the AND circuit 5 through an OR circuit 8. Therefore, when the recording mode is inverted, the multivibrator provides an output for a constant interval of time. Therefore, a program searching detecting signal is recorded in both the recording start part of the signal and the end part. In this way, the tail end part of the recording signal can be detected easily.</p> |
