JPS6020182Y2 - Tape recorder pause device - Google Patents

Description

[Detailed description of the invention] The present invention is intended to easily form the unrecorded portion between songs, which is required in a so-called automatic cueing device that detects the beginning of a recorded song by rewinding or fast forwarding. This invention relates to a pause device for a tape recorder that allows for

In order to form the unrecorded sections between songs required by the automatic cueing device, use a pause switch, turn on the pause switch to disable recording, run the tape for about 3 seconds, and then stop. This creates an unrecorded section, but if left as is, it would be inconvenient because it would not be possible to stop the tape at the desired song part during playback.

In order to eliminate the drawbacks of this invention, the present invention relates to a pause device for a tape recorder, which stops the tape after running for a while when the pause switch is operated during recording, but immediately stops the tape when the pause switch is operated during playback. This will be explained below according to the drawings.

1 is a flip-flop with set and reset terminals,
A pulse-like pause signal P that is generated when a pause switch (not shown) is turned on is applied to the set terminal S.

2 is the first terminal connected to the terminal Q of the flip-flop 1.
The transistor 3 consists of a resistor 4 and a capacitor 5, and is charged and discharged by turning on and off the first transistor 2.
A second transistor 6 is connected in series to the capacitor 5 in a time constant circuit.

The second transistor 6 is turned on only during recording by a first switch 7 that is linked to a recording/reproduction changeover switch (not shown).

Reference numerals 8 and 9 indicate third and fourth transistors that are turned on and off in the state of the first time constant circuit 3, and reference numeral 10 operates when the fourth transistor 9 is off. (not shown) between pause and non-pause states.

Reference numeral 11 denotes a second time constant circuit consisting of a capacitor 12 and a resistor 13 that starts charging when the fourth transistor 9 is turned off, and its output signal is applied to the reset terminal R of the flip-flop 1 via an OR circuit 14. .

A signal obtained by adding a signal obtained by inverting the pause signal by an inverter 15 and a signal obtained by delaying the output signal of the terminal Q of the flip-flop 1 by a third time constant circuit 16 by an AND circuit 17 is also applied to the OR circuit 14.

18 is the fifth, sixth, seventh and eighth transistor 19.2
0,21.22 and a light emitting diode 23 connected to the collector of the seventh transistor 21, the fifth transistor 19 is a second transistor that is turned off when the tape stops.
The switch 24 turns it off.

Further, the sixth transistor 20 is turned off when the terminal Q of the flip-flop 1 is at level "O".

The output signal of the eighth transistor 22 is also applied to a muting circuit (not shown).

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

Now - If you have finished recording a song and want to create an unrecorded section after the section of tape where the song was recorded, turn on the pause switch.

Then, a pulse-like pause signal P is generated and the set terminal S
As a result, the flip-flop 1 is inverted and the level until now is "19", and the terminal Q becomes the level "0".

As a result, the sixth transistor 20 is turned off and the seventh transistor 20 is turned off.
The transistor 21 is turned on, the light emitting diode 23 emits light, the pause state is displayed, and the eighth transistor 2 is turned on.
2. Off-state Add a muting signal to the muting circuit to disable the amplifier.

However, since the first transistor 2, which had been on until then, is turned off and the second transistor 6 is on at this time, charging starts to the capacitor 5, but the third transistor is still on.
Since the transistor 8 is not turned on, the plunger 10 is not operated and the tape is run without being recorded.

After several seconds (approximately 3 seconds), when the capacitor 5 is sufficiently charged, the third transistor 8 is turned on and the fourth transistor 9 is turned off, causing the plunger 10 to operate and enter a pause state.

At the same time, charging of the second time constant circuit 11 is started, and the charging voltage of the capacitor 12 is increased at the time when enough time has elapsed for the plunger 10 to bring the push-butush type pause mechanism into the pause state. Then, a reset signal is applied to the reset terminal R via the OR circuit 14, the flip-flop 1 is reset, and the terminal Q is set to the level "1°".

Along with this, the first transistor 2 is turned on to discharge the charge stored in the first time constant circuit 3, the third transistor 8 is turned off, and the fourth transistor 9 is turned on to disable the plunger 10. , to prevent unnecessary current from flowing through the plunger 10.

When the flip-flop 1 is reset and the terminal 100 is set to the level "work", the sixth transistor 20 is turned on, but instead, when the tape is stopped, the fifth transistor 19 is turned off. So the 7th transistor 2
1 remains on and the light emitting diode 23 continues to emit light.

When the intended purpose of creating an unrecorded section on the tape is completed and you want to record again, turn on the pause switch and apply a pause signal to the set terminal, and the terminal page of flip-flop 1 will be set to level "0" in the same way as above. ” and the first
The transistor 2 is turned off to charge the first time constant circuit 3, the third transistor 8 is turned on, the fourth transistor 9 is turned off, and the plunger 10 is operated to release the pause.

Thereafter, the second time constant circuit 11 is charged, the flip-flop 1 is reset, and the plunger 10 is rendered inoperable.

In this state, since the fifth and sixth transistors 19 and 20 are both on, the seventh transistor 21 is turned off, and the light emitting diode 23 is turned off, while the muting signal disappears, returning the amplifier to its normal state. do.

By the way, if you turn on the pause switch when recording, but you no longer need to pause, if you press the pause switch again immediately, the pause will not be activated.

That is, when the first pause switch is turned on and the terminal Q of the flip-flop 1 is set to level "1", and when the pause switch is turned on again while that level is held by the third time constant circuit 16, the input of the AND circuit 17 A signal of level "1" held in the third time constant circuit 16 and a pause signal converted to level "1" by the inverter 15 are added to the side, and the output of the AND circuit 7 is at level "1". , a reset signal is applied to the reset terminal via the OR circuit 14, the flip-flop 1 is reset, and the terminal Q is set to level "1", so the first transistor 2 is turned on and the first time constant circuit 3 is charged. to prevent the plunger 10 from being operated.

Next, the playback state will be explained.

In this state, the pause switch is turned on, flip-flop 1 is set, and terminal Q is set to level "0".

At this time, the first switch 7 is turned off and the second transistor 6
remains on, the terminal Q becomes level 0, and as soon as the first transistor 2 is turned on, the third transistor 8 is turned on, the fourth transistor 9 is turned off, and the plunger 10 is operated. to pause.

As described above, the tape recorder pause device of the present invention has a first time constant circuit that controls the time from when the pause switch is operated to operate the flip-flop to when the plunger is operated to determine the recording state and the playback state. Since I connected a transistor that turns on and off depending on the switching state, when recording, the flip-flop operates and a muting signal is generated, and the period from disabling recording until the plunger operates and stops the tape is generated. Although the time is delayed, the plunger can be operated to stop the tape immediately after the flip-flop operates during playback.

In addition, after the plunger operates and activates the button-button-pause mechanism, the second time constant circuit resets the flip-flop and disables the plunger, thereby preventing unnecessary current from flowing into the plunger. It never flows.

Furthermore, the stray voltage or discharge voltage of the third time constant circuit and the pause signal are used as gates in an AND circuit to apply a reset signal to the flip-flop. However, if the pause switch is operated again before the plunger is activated, the flip-flop is reset and recording can be resumed without being paused.

[Brief explanation of the drawing]

The figure is a circuit diagram of a pause device for a tape recorder according to the present invention. 1...Flip-flop, 2...1st
Transistor, 3...First time constant circuit, 6...
...Second transistor, 8...Third transistor, 9...Fourth transistor, 10...
...Plunger 1.11...Second time constant circuit, 18...Control circuit.

Claims (1)

[Scope of utility model registration request] a flip-flop controlled by a pause signal generated when the pause switch is turned on and off; a first transistor turned on and off by the output of the flip-flop;
a first time constant circuit that is charged and discharged by a transistor; a second transistor that is turned on and off in response to switching of a recording/playback selector switch so that the first time constant circuit can be charged and discharged only during recording; and the first time constant a third transistor that excites a plunger that is turned on and off in a circuit to switch the pause mechanism between a pause state and a non-pause state; a second time constant circuit that is charged and discharged by the third transistor and applies a reset signal to the flip-flop; a gate circuit that generates a reset signal that resets the flip-flop using a charging voltage or a discharging voltage of a third time constant circuit that is charged and discharged by the output of the flip-flop, and a pause signal; A pause device for a tape recorder consisting of a control circuit that generates a timing signal.