JPH0351766Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field The present invention relates to an audio device that combines a double-deck tape recorder with two decks and other source equipment, and in particular has an autofunction function. The present invention relates to an audio device having:

(b) Prior Art A tape recorder having two decks in a single cabinet, a so-called double deck type tape recorder, is known. Such tape recorders include, for example, the one described in Japanese Patent Application Laid-open No. 132814/1983, which has a dubbing function that records the playback signal of one deck on the other deck, and a tape recorder that has a dubbing function that records the playback signal of one deck on the other deck. It is easy to use and is currently widely used because it can feature a continuous playback function that automatically starts playing the other deck when it is finished.

On the other hand, in order to improve operability, even if the function switch is not operated manually, for example, when the tuner is moved, the function switch automatically switches to the tuner position and operates the tape recorder. There is known an audio device having an auto-function function in which the function switch automatically switches to the tape recorder position.

Figure 2 shows a double deck type acoustic device with such an autofunction function.
1 includes a playback head 2 and a playback amplifier 3;
4 is a second deck equipped with a recording head 5 and a recording circuit 6; 7 is a tuner; 8 is a record player;
a, the reception signal of the tuner 7 is sent to the second terminal 9b,
A function switch to which the playback signal of the record player 8 is supplied to a third terminal 9c; 10 is a switching signal generation circuit that generates a switching signal to switch the function switch 9 in response to a play start operation of the source device; , and 11 are output circuits consisting of a power amplifier 12 and a speaker 13, which monitor the audio signal from the source device selected by the function switch 9.

The function switch 9 is switched by a switching signal generated from the switching signal generating circuit 10, and the switching signal generating circuit 10 controls the first and second decks 1 and 4, the tuner 7, and the recorder, which are source devices. In response to a start signal generated by a play start operation of the player 8, the function switch 9 is switched to the position of the source device on which the operation was performed, so that the source device on which the operation was performed is monitored. At the same time, an end signal is generated to end the performance of the source device on which the operation has not been performed, thereby ending the performance of the source device that was being monitored before the operation was performed.

Next, the operation will be explained. In the above-described apparatus, when recording the reproduced signal from the first deck on the second deck, that is, when performing tape dubbing, the recording operation on the second deck 4 is performed, and then the reproduction operation on the first deck 1 is performed. Then, the start signal of the first deck 1 is supplied to the switching signal generating circuit 10 by the reproducing operation of the first deck 1, and the switching signal generating circuit 10 supplies the start signal of the first deck 1 to the function switch 9.
A switching signal is generated which switches the first deck to the 1 position. Therefore, the function switch 9
is switched to the first terminal 9a, and the reproduction signal of the first deck 1 reproduced by the reproduction head 2 and reproduction amplifier 3 is supplied to the second deck 4 via the function switch 9 and buffer amplifier 14. Therefore, the reproduced signal is supplied to the recording head 5 via the recording circuit 6 of the second deck 4, and is recorded on the magnetic tape used in the second deck 4, thereby performing tape dubbing. Also, at this time, the first
Since the reproduced signal from the deck 1 is supplied to the output circuit 11 after passing through the buffer amplifier 14, a sound corresponding to the reproduced signal is emitted from the speaker 13 and is monitored.

Similarly, when recording the reception signal of the tube 7, turn on the power of the tuner 7, switch the function switch 9 to the second terminal 9b, and perform the recording operation of the second deck 4. The received signal is recorded and the received signal is monitored. In addition, when recording the playback signal of the record player 8, if the second deck 4 is operated to record and the record player 8 is operated to start playing, the function switch 9 is switched to the third terminal 9c. , the playback signal from the record player 8 is recorded on the second deck 4, and the playback signal is monitored.

In this way, the above-mentioned device has good operability, since the function switch 9 is automatically switched when the source device is operated to start playing, and can be easily operated even by a person who is not familiar with electronic devices.

(c) Problems to be solved by the invention However, in the above-mentioned apparatus, since the audio signal selected by the function switch 9 becomes the recording source and the monitoring source, the first deck 1 is not used during tape dubbing. In audio equipment that cannot reproduce source signals other than the reproduced signals of The disadvantage is that the reproduced signal from the first deck 1 must be monitored or a muting circuit must be provided for muting. However, providing a separate recording selection switch that selects only the recording source impairs operability and reduces the effectiveness of the autofunction function by half.

(d) Means for solving the problem The present invention includes a means for recording the output signals of the first deck and other source equipment by the second deck, a means for automatically switching the function switch,
means for performing a performance start operation of a source function for which a performance start operation has been performed; means for performing a stop operation for a source device that was in a performance state immediately before; The present invention is characterized by comprising means for preventing the first and second decks from being stopped.

(E) Effect This invention allows the reproduction signal of the first deck to be supplied to the recording circuit of the second deck during tape dubbing, and also allows the reproduction signal of the first and second decks to be supplied by starting the playback of another source device. The stop operation is not performed, the tape dubbing state is maintained, and the output signal of the other source device can be monitored and the tape dubbing can be performed at the same time.

(F) Example Figure 1 shows an example of the present invention.
18 is a first deck equipped with a playback head 16 and a playback amplifier 17, and a recording head 19 and a recording circuit 2.
0, 21 is Chuyuna, 22
23 is a record player, the reproduction signal of the first deck 15 is connected to the first terminal 23a, the received signal of the tuner 21 is connected to the second terminal 23b, and the record player 22
A reproduction signal is supplied to a third terminal 23c, and a function switch selects a source signal; 24 is a switching signal that generates a switching signal to switch the function switch 23 in response to a play start operation of the source device; A generating circuit 25 is composed of a power amplifier 26 and a speaker 27, and an output circuit 28 monitors the acoustic signal selected by the function switch 23. A common terminal 28a is connected to a second
A changeover switch 29 is connected to the input end of the recording circuit 20 of the deck 18, the first terminal 28b is connected to the output end of the reproduction amplifier 17 of the first deck 15, and the second terminal 28c is connected to the input end of the output circuit 25. A control signal generation circuit 30 generates a control signal for switching the changeover switch 28, and a control signal generation circuit 30 connects the changeover signal generation circuit 24 to the first and second decks 15 and 18.
This is a cutoff circuit that cuts off the end signal generated by the control signal generation circuit 29 when the control signal generated from the control signal generation circuit 29 is "H".

The switching signal generation circuit 24 connects the first and second decks 15 and 18, which are source devices, and the tuner 2.
1, and in response to a start signal generated by the performance start operation of the record player 22, the function switch 23 is switched to the position of the source device on which the operation was performed, and the output signal of the source device on which the operation was performed is performed. At the same time, it generates an end signal to end the performance of the source device that is not being operated, and ends the performance of the source device that was being monitored immediately before the operation was performed.

The control signal generation circuit 29 is connected to the first deck 15.
a first switch 31 that is closed when the deck 18 is set to the playback state; a second switch 32 that is closed when the second deck 18 is set to the recording state; and the first and second switches 31 and 32. an AND circuit 33 that generates an "H" signal when both are closed; an inverter 34 that generates an "H" signal when the second switch 32 is open; and an "H" signal from the AND circuit 33. RS-FF (RS flip-flop) 35 which generates an "H" signal from the output terminal Q when the inverter 34 is generated, and generates an "L" signal from the output terminal Q when the inverter 34 generates the "H" signal. The common terminal 28a of the changeover switch 28 is connected to the first terminal 28b by the "H" signal generated from the RS-FF 35, and
The cutoff circuit 30 is cut off, and the RS-FF35
The "L" signal generated from the switch connects the common terminal 28a of the changeover switch 28 to the second terminal 28c, and makes the cutoff circuit 30 conductive.

In the above-described apparatus, when recording a source signal other than the reproduced signal from the first deck 15, for example when recording a received signal from the tuner 21, the tuner 21 is turned on. Then, the tuner 2
When the power is turned on, which is the performance start operation in step 1, the start signal of the tuner 21 is switched to the switching signal generation circuit 2.
4, and the switching signal generating circuit 24 generates a switching signal for switching the function switch 23 to the tuner 21 position. Therefore, the function switch 23 is switched to the second terminal 23b, and the broadcast reception signal received by the tuner 21 is transferred to the changeover switch 28 via the function switch 23 and the buffer amplifier 36.
is supplied to the second terminal 28c of. In an initial state in which both the first and second decks 15 and 18 are not operated, the first and second switches 31 and 32 of the control signal generation circuit 29 are both open;
Since the "L" signal is generated from the RS-FF 35, the common terminal 28a of the changeover switch 28
is connected to the second terminal 28a. In this state, put the second deck 18 into the recording state, and turn the second switch 3.
Since the first switch 31 is open even when the switch 2 is closed, the "L" signal continues to be generated from the RS-FF 35, and the state of the changeover switch 28 does not change. Therefore, the changeover switch 28
The reception signal of the tuner 21 supplied to the second terminal 28c of the tuner 21 is supplied to the recording circuit 20 of the second deck 18 via the changeover switch 28, and when the tuner 21 receives the desired performance, the second When the deck 28 is put into the recording state, the received signal is supplied to the recording head 19 via the recording circuit 20 and recorded on the magnetic tape used by the second deck 18. Also, at this time, the received signal of the tuner 21 is supplied to the output circuit 25 after passing through the buffer amplifier 36, so that a sound corresponding to the received signal is emitted from the speaker 27 and monitored. At this time, the end signal generated from the switching signal generation circuit 24 stops the performance of the source devices other than the tuner 21.

When recording the playback signal of the record player 22, the second deck 18 is operated to record, and the record player 22 is operated to start playing, and the function switch 23 is switched to the third terminal 23c, which is the same as in the above case. For the same reason, the common terminal 28a of the changeover switch 28 is connected to the second terminal 28c, so that the playback signal from the record player 22 is recorded by the second deck 18, and the playback signal is monitored.

Next, when the reproduction signal from the first deck 15 is to be recorded on the second deck 18, the second deck 18 is put into the recording state and the first deck 15 is put into the reproduction state. Then, the reproduction head 16 of the first deck 15 starts to reproduce the magnetic tape, and the reproduction signal is transmitted to the first terminal 28b of the changeover switch 28 and the first terminal 23a of the function switch 23 via the reproduction amplifier 17. Supplied. Here, in the control signal generation circuit 29, the first switch 31 is closed by the playback operation of the first deck 15, and the second switch 32 is closed by the recording operation of the second deck 18.
An “H” signal is generated from the AND circuit 33, and RS
-Since it is input to the S input terminal of FF35, the RS
- An “H” signal is generated from the output end of FF35,
The common terminal 28a of the changeover switch 28 is connected to the first
It is connected to terminal 28b. Therefore, the reproduction signal of the first deck 15 supplied to the first terminal 28b of the changeover switch 28 is supplied to the recording circuit 20 of the second deck 18. Therefore, the reproduced signal is supplied to the recording head 19 via the recording circuit 20, and is recorded on the magnetic tape used in the second deck, thereby performing tape dubbing. Also,
At this time, due to the regeneration operation of the first deck 15, the first
A start signal for the deck 15 is supplied to a switching signal generating circuit 24, which generates a switching signal for switching the function switch 23 to the first deck 15 position. Since the signal is switched to the terminal 23a, the reproduced signal from the first deck 15 is supplied to the output circuit 25 via the function switch 23 and the buffer amplifier 36. Therefore, the speaker 27 of the output circuit 25 emits sound corresponding to the reproduced signal, and the reproduced signal from the first deck 15 is monitored. In this state, if the user wants to listen to the audio signals of a source device other than the first deck 15, he or she can start the operation of the desired source device. That is, once the dubbing state is established, the control signal generation circuit 29 controls the second deck 18.
The changeover switch 28 continues to generate the "H" signal until the recording state is canceled, the second switch 32 is opened, and the "H" signal is applied to the R input terminal of the RS-FF 35. 1st terminal 2
8b, and the disconnection circuit 30 remains in the disconnected state. Therefore, even if a source device other than the first deck 15 is operated to start operation, the tape dubbing state is connected, only the function switch 23 is switched to the desired source device position, and the tape dubbing and predetermined source are monitored. You can do both at the same time.

(G) Effect of the invention As described above, according to the invention, when dubbing a tape, the playback signal of the first deck is supplied to the recording circuit of the second deck by the changeover switch, and the cut-off circuit is activated. This prevents the first and second decks from being stopped by the play start operation of another source device, so that the function switch can be selected by the function switch without interrupting tape dubbing. The advantage is that even if the audio device has a high-speed dubbing function, there is no need to monitor the reproduced signal from the first deck, which is reproduced at high speed.

Furthermore, according to the present invention, the switching operation of the changeover switch and the control for operating the cut-off circuit are performed by a single control signal generated from the control signal generation circuit, so there is no need for manual operation. With a simple circuit configuration, there is an advantage that two operations, the switching operation of the changeover switch and the interrupting operation of the interrupting circuit, can be performed simultaneously and reliably.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing an embodiment of the present invention, and FIG. 2 is a circuit diagram showing a conventional audio device. Explanation of main drawing numbers, 15...1st deck, 18...
...Second deck, 23...Function switch, 24...Switching signal generation circuit, 28...Switching switch, 30...Blocking circuit.

Claims (1)

[Scope of utility model registration request] An art function that can automatically switch the function switch, start playing the source device on which the play start operation was performed, and stop the source device that was in the playing state immediately before the play start operation on the source device. and a tape dubbing function for recording a playback signal from a first deck in the source device on a second deck, wherein the playback signal from the first deck and the source device selected by the function switch are a changeover switch that selectively supplies the audio signal to the recording circuit of the second deck; and a cutoff circuit that selectively blocks the end signal that causes the stop operation from being supplied to the first and second decks. a control signal generation circuit that determines a dubbing state based on the playback state of the first deck and the recording state of the second deck, and generates a control signal indicating the dubbing state to the changeover switch and the cutoff circuit; The changeover switch supplies the playback signal of the first deck to the recording circuit of the second deck, operates the cutoff circuit, and stops the first and second decks when the other source equipment starts playing. A sound device characterized by preventing the sound from occurring.