JPS604283Y2 - tape recorder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape recorder that can create unrecorded portions on the tape both before entering a pause state and after releasing the pause state.

When recording music with a tape recorder, the tape recorder is set to the recording state a little before the beginning of the recording, or the pause switch that is locked in the recording state is released to start recording.

At the end of the interval, the end is confirmed and the system is put into a stop state, or the pause switch is used to put it into a pause state.

For such operations, and also for automatic song selection, it is desirable to create unrecorded sections between songs.

Conventionally, the recording volume is set to zero as soon as the recording of a song is completed, and the tape is allowed to run a short distance to create an unrecorded section.

With such a tape recorder, when recording the next song, it is necessary to return the recording volume to the appropriate position again, but in this case, it is possible to forget that the recording volume was set to zero in order to create an unrecorded section. Otherwise, recording may not be possible.

The present invention provides a tape recorder in which a muting operation is performed in relation to a pause operation both before the pause operation and after the pause operation is released, thereby making it possible to create unrecorded parts on the tape. do.

1, 1 is an amplifier circuit, 2 is a microphone, 3 is a speaker,
4 is a recording/playback head; 5 is a pause signal generation circuit that generates a car pause signal (FIG. 2A) while a pause button (not shown) is pressed; 6 is a tape 7 that is set for recording or playback; 8 is an operation signal generation circuit that generates a positive operation signal (Fig. 2B) when the vehicle is running at high speed, 8 is a stop signal generation circuit that generates a positive stop signal (Fig. 2C) when the vehicle is stopped, and 9 is a mute. A switching transistor is controlled by the pause signal and grounds the signal path between the amplifier circuits 1 and 1.

10 is a first differentiating circuit connected to the pause signal generating circuit 5 via an inverter 11, 12 is a second differentiating circuit directly connected to the pause signal generating circuit 5, and 13 is the output of the first differentiating circuit 10. 14 is a second gate circuit that AND-gates the output of the second differentiating circuit 12 and the stop signal; 15 is the output of the first and second gate circuits 13 and 14; 16 is a monostable multivibrator connected to the third gate circuit 15, 17 is a pause relay controlled by the monostable multivibrator 16, and the first operation of the pause relay 17 is The conventionally known push-button pause mechanism is put into a pause state, and the pause state is released by the next operation.

-In addition, the monostable multi-by break 1
If a bistable multivibrator is used instead of 6, the first signal from the third gate circuit 15 will invert the bistable multivibrator, and its output will continue to excite the pause relay 17, and the next signal will invert the bistable multivibrator. If the pause relay 17 is rotated in the normal direction and the pause relay 17 is returned to normal, there is no need to use a push-button pause mechanism.

Further, a transistor may be used instead of the pause relay 17 to turn off the power to the motor circuit and bring it into a pause state.

Next, the operation of the present invention will be explained.

Now, when the recording and reproducing switches 18 to 20 are switched to the opposite side as shown and the tape is set to a constant speed state (FIG. 2A), the recording state is entered, and the sound arriving at the microphone 2 is converted into an electrical signal by the microphone 2.

The electrical signal is applied to the amplification circuit 1.1 via the recording/playback switch 18, amplified, and then applied to the recording/playback head 4 via the record/playback switch 20.19, where it is recorded onto the tape 7.

When the song to be recorded ends and a pause button (not shown) is pressed to temporarily stop the tape 7 (see Figure 2), the pause signal generation circuit 5 generates a pause signal A and turns on the transistor 9. .

Then, since the signal flowing to the amplifier circuit 1 is grounded, even if sound is input to the microphone 2 at this time, it is not applied to the recording/reproducing head 4.

On the other hand, when the pause signal A is applied to the first differentiating circuit 10 via the inverter 11, a negative clock signal D' is generated from the first differentiating circuit 10;
' is blocked by the first gate circuit 13 and is not applied to the monostable multivibrator 16.

Therefore, the tape 7 continues to run without being paused, and a non-recorded portion is formed on the tape 7 during this time.

After that, when you release the pressure on the pause button (see Figure 2),
A positive clock signal is generated from the first differentiating circuit 10.

By the way, when the tape 7 is in a constant speed state, the operation signal B is generated from the operation signal generation circuit 6, and the first gate circuit 13
Since the clock signal passes through the first gate circuit 13 and is applied to the monostable multivibrator 16, the monostable multivibrator 16 generates a one-pulse signal, thereby triggering the pause relay 17. Excite the button to create a button-type pose mechanism (not shown).
into the pause state.

Since a non-recording section is created while the pause button is pressed in this way, the length of the non-recording section can be freely selected.

r To record again next time, press the pause button (second
Figure 2).

At this time, the stop signal C from the stop signal generation circuit 8 is applied to one input terminal of the second gate circuit 14, and the pause signal A is applied directly to the second differentiation circuit 12, so that
The clock signal E generated immediately after pressing the pause button passes through the second gate circuit 14, enters the monostable multivibrator 16, and generates a one-pulse signal from the monostable multivibrator 16, which excites the pause relay 17 and activates the pause mechanism. Release from the pause state.

Thereby, the tape 7 starts running again.

At this time, the transistor 9 is turned on by the pause signal A, so muting occurs and recording is not performed on the tape 7. However, when the pause button is released, the muting is canceled and recording can be started immediately.

As described above, in the tape recorder of the present invention, while the pause button is pressed, the tape runs but is muted, so it is possible to create unrecorded portions on the tape with an extremely simple operation.

Moreover, this operation can be performed either before or after the pause.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram of the tape recorder of the present invention, and FIG. 2 is a time chart of signals at various parts.

Claims (1)

[Scope of utility model registration request] A first signal generator that generates a first pulse signal while operating the pause button, a second pulse signal generator that generates a second pulse signal when the tape is in a constant speed state, and a third pulse signal when the tape is stopped. a third pulse signal generation circuit that generates a signal; a muting circuit that is put into a muting state by the first pulse signal; a first differentiation circuit that differentiates the first pulse signal after inverting it with an inverter; a second differentiating circuit that directly differentiates the pulse signal; a first gate circuit that AND-dates the output of the first differentiating circuit and the second pulse signal; and an AND gate between the output of the second differentiating circuit and the third pulse signal. and a pause circuit that enters or releases a pause state under the control of the outputs of the first and second gate circuits.