JPH0433524Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to improvements in recording signal switching circuits such as amplifiers.

[Prior Art] To explain a conventional switching circuit of this type with reference to FIG. 3, 11, 12, and 13 are signal input terminals, for example, 11 is [PHONO], 12 is [TUNER], and 13 is [AUX]. ] signal input terminal.

The respective signal input terminals 11, 12, 13 are the contacts 1, 2 of recording signal switching switches SW2a, SW2b, which have switching pieces S2a, S2b that interlock with each other.
3 (however, the [PHONO] signal input terminal 11 is connected to the phono equalizer 19).

The switching piece S2a of the recording signal selection switch SW2a is connected to the [REC] terminal 15 which should be connected to the signal input terminal of the first tape deck 20, and the switching piece S2b of the recording signal selection switch SW2b is connected to the signal input terminal of the second tape deck 21. are connected to the [REC] terminal 17 to be connected to the first
The [PB] terminal 14 that should be connected to the signal output terminal of the tape deck 20 is the recording signal selection switch SW2b.
The [PB] terminal 16 which should be connected to the contact 5 of the second tape deck 21 and the signal output terminal of the second tape deck 21 is connected to the contact 6 of the recording signal changeover switch SW2a.

Contacts 4 and 5 of the recording signal changeover switch SW2a and contacts 4 and 6 of the recording signal changeover switch SW2b are open ends, respectively.

Furthermore, the signal input terminals 11, 12, 13 and [PB] terminals 14, 16 are connected to contacts 1, 2, 3, 4, and 5 of the input signal changeover switch SW1, respectively.
(However, the [PHONO] signal input terminal 11 is connected to the phono equalizer 19), and the switching piece S of the input signal selection switch SW1 is connected to
1 is connected to the output terminal 18, and the output terminal 18
Although not shown, is connected to an acoustic transducer such as a speaker via an amplifier circuit, and the input signal selection switch
The signal selected by SW1 is listened to.

According to the configuration, the recording signal selection switch SW
Switching pieces S2a and S2b of 2a and SW2b
When connected to the contact 1, the signal applied to the [PHONO] signal input terminal 11 is input to the first and second tape decks 20 and 21, and by setting the tape deck 20 and/or the tape deck 21 to recording operation, The signal is recorded on a tape deck.

Similarly, by connecting the switching pieces S2a and S2b of the recording signal selection switches SW2a and SW2b to contact 2, respectively, the signal applied to the [TUNER] signal input terminal 12 is transmitted to the switching pieces S2a and S2b of the recording signal selection switches SW2a and SW2b. S2a
and S2b to the contacts 3, the signal applied to the [AUX] signal input terminal 13 is input to the first and second tape decks, and by setting the tape deck 20 and/or tape deck 21 to recording operation, the The signal is recorded on a tape deck.

Also, recording signal selection switches SW2a and SW2
If the switching pieces S2a and 2b of b are respectively connected to the contact 4, no input signal is applied to the tape decks 20 and 21, respectively.

Furthermore, recording signal selection switch SW2a and
If switching pieces S2a and S2b of SW2b are connected to contacts 5, the signal output terminal ([PB] terminal 14) of the tape deck 20 and the signal input terminal ([REC] terminal 17) of the tape deck 21 are connected, and the tape deck 20 The so-called "dubbing" from the tape deck 20 to the tape deck 21, in which the signal reproduced by
If switching pieces S2a and S2b of SW2b are connected to contacts 6, the signal output terminal ([PB] terminal 16) of the tape deck 21 and the signal input terminal ([REC] terminal 15) of the tape deck 20 are connected, and the tape deck 21 The reproduced signal is recorded by the tape deck 20, so-called "dubbing" from the tape deck 21 to the tape deck 20 becomes possible.

Furthermore, this switching circuit has the advantage of being able to select a signal to be listened to through a speaker or the like via an amplifier circuit, completely independent of the signal to be recorded.

For example, it is possible to record a broadcast while listening to a record, or to perform tape dubbing while listening to a record.

[Problems to be solved by the invention] The conventional recording signal switching circuit described above is for tape deck 2.
Since the recording signal changeover switch SW2a and the recording signal changeover switch SW2b are interlocked with each other, only the same type of signal can be selected to be input to the tape deck 21.

This is due to the fact that the tape dubbing operation was attempted to be made possible only by switching the recording signal changeover switches SW2a and SW2b.

Therefore, for example, while listening to a record, the first tape deck 20 records the signal applied to the [TUNER] signal input terminal, and at the same time, the second tape deck 21 records the signal applied to the [AUX] signal input terminal. It was impossible to perform this action.

[Means for Solving the Problems] This invention provides a signal input terminal group and a first tape deck to which the signal input terminals of the first tape deck are connected.
A first "PB" terminal to which the "REC" terminal and the signal output terminal of the tape deck should be connected, and a second "PB" terminal to which the signal input terminal of the second tape deck should be connected.
A second “PB” terminal to which the “REC” terminal and the signal output terminal of the tape deck are to be connected, each signal input terminal of the signal input terminal group and the second
A first recording signal selection switch in which the "PB" terminal is connected to each contact and the first "REC" terminal is connected to a switching piece, each signal input terminal of the signal input terminal group and the first "PB" terminal. to each contact, the second
A second recording signal changeover switch has a "REC" terminal connected to a switching piece, and the switching pieces of the first and second recording signal changeover switches both connect the second "PB" terminal connection contact and the first When connected to the "PB" terminal connection contact, the first or second recording signal switching for disconnecting either one of the [PB] terminals and the contact to which the [PB] terminal should be connected. a third changeover switch interlocking with the switch, each of the signal input terminals and each of the [PB]
This is a recording signal switching circuit equipped with an input signal switching switch in which a terminal is connected to a contact point and a switching piece is connected to an output terminal.

[Function] With the above configuration, this device allows the first and second recording selector switches to operate independently, so that the types of input signals to the first tape deck and the second tape deck are different, and at the same time different types of signals can be input to the first tape deck and the second tape deck. In addition to enabling recording, when both recording signal selector switches are switched to the dubbing operation position, one of the dubbing operations takes priority, and a frequency correction device or the like can be easily connected in place of the tape deck. In this way, it has become possible to perform recording operations according to the user's preferences and to diversify the uses of the sound reproduction device.

[Embodiment] In FIG. 1, 11, 12, and 13 are signal input terminals, for example, 11 is a [PHONO] signal input terminal, 12 is a [TUNER] signal input terminal, and 13 is a signal input terminal for [AUX].

The respective signal input terminals 11, 12, and 13 are connected to the respective contacts 1, 2, and 3 of the first and second recording signal changeover switches SW3 and SW4b, which operate independently (however, [PHONO] signal input terminal 11 (via the phono equalizer 19).

Then, the switching piece S3 of the first recording signal switching switch SW3 is connected to the first [REC] terminal 15, which should be connected to the signal input terminal of the first tape deck 20.
Switching piece S of the second recording signal switching switch SW4b
4b are respectively connected to the second [REC] terminal 17 which is to be connected to the signal input terminal of the second tape deck 21.

Further, the contact 4 of the first recording signal changeover switch SW3 and the second recording signal changeover switch SW4b
The contacts 4 of the first recording signal changeover switch SW3 are respectively open ends, and the contact 5 of the first recording signal changeover switch SW3 is connected to the third changeover switch SW4a, which has a changeover piece S4a that interlocks with the changeover piece S4b of the second recording signal changeover switch SW4b.
is connected to contacts 1, 2, 3, and 4 of.

Further, the contact 5 of the third changeover switch SW4a is an open end, and the changeover piece S4a of the third changeover switch SW4a is connected to the second [[] to be connected to the signal output terminal of the second tape deck 21. PB] terminal 16 and the second recording signal selection switch
The contact 5 of SW4b is the first [PB] terminal 14 which should be connected to the signal output terminal of the first tape deck 20.
are connected to each.

Further, each of the signal input terminals 11, 12, 13, the first [PB] terminal 14, and the second [PB] terminal 16 are connected to contacts 1 and 1 of the input signal changeover switch SW1, respectively.
Connect to 2, 3, 4 and 5 respectively (however,
[PHONO] The signal input terminal 11 is connected to the phono equalizer 19), and the corresponding changeover switch SW
1 switching piece S1 is connected to an output terminal 18, and the output terminal 18 is connected to an acoustic transducer such as a speaker via an amplifier circuit (not shown), so that the signal selected by the switching switch SW1 can be heard. .

According to this configuration, the first recording signal changeover switch SW3 and the second recording signal changeover switch SW4b
Since each switch operates independently, the input signal to each tape deck 20, 21 can be independently selected by connecting each changeover switch to its respective contact 1, 2, or 3.

Furthermore, when the switching piece S3 of the first recording signal changeover switch SW3 is connected to the contact 5, the third changeover switch which is linked to the second recording signal changeover switch SW4b is activated.
When switching piece S4a of SW4a is not connected to contact 5, the signal output terminal (second [PB] terminal 16) of tape deck 21 and signal input terminal (first [REC] terminal 15) of tape deck 20 are connected, The signal reproduced by the tape deck 21 is recorded by the tape deck 20, so-called "dubbing" from the tape deck 21 to the tape deck 20.
However, when switching piece S4b of second recording signal selection switch SW4b is connected to contact 5, switching piece S4a is also connected to contact 5, so regardless of the switching position of first recording signal selection switch SW3, the tape deck 20 is A signal output terminal (first [PB] terminal 14),
Signal input terminal of tape deck 21 (second [REC]
When the terminal 17) is connected, the signal reproduced by the tape deck 20 is recorded by the tape deck 21, so-called "dubbing" from the tape deck 20 to the tape deck 21 becomes possible.

That is, the third changeover switch SW4a moves the changeover piece S3 of the first recording signal changeover switch SW3 to the dubbing operation position (contact 5) from the tape deck 21 to the tape deck 20, and the changeover piece S3 of the second recording signal changeover switch SW4b. When S4b is simultaneously placed at the dubbing operation position (contact 5) from the tape deck 20 to the tape deck 21, the dubbing operation from the tape deck 20 to the tape deck 21 is prioritized.

[Effect of the invention] According to the invention explained in detail in the above embodiment, the input signals to each tape deck 20 and 21 can be selected independently, so that, for example, while listening to a record, input signals to the first tape deck 20 can be selected independently. It is now possible to record the signal applied to the [TUNER] signal input terminal and simultaneously record the signal applied to the [AUX] signal input terminal on the second tape deck 21.

Furthermore, there are many cases where it is desired to record a signal applied to the [PHONO] signal input terminal through a frequency correction device such as a graphic equalizer to obtain a desired frequency correction. As shown in the figure, instead of the first tape deck, a graphic equalizer 22 is connected between the first [REC] terminal 15 and the first [PB] terminal 14, and the first recording signal selection switch SW3 is connected to the [PHONO] signal input. By setting the second recording signal changeover switch SW4b at the terminal position (contact 1) to the dubbing operation position (contact 5) from tape deck 20 to tape deck 21, the signal applied to the [PHONO] signal input terminal is set to the first Recording signal selection switch SW
3 to the graphic equalizer 22, and the frequency-corrected signal is applied to the [REC] terminal via the second recording signal changeover switch SW4b and can be recorded by the tape deck 21, which has an excellent effect.

Note that this invention is not limited to the above-mentioned embodiments, and can be applied even if the number of signal input terminals is three or more, for example.

Also, although the configuration is such that priority is given to the dubbing operation from the tape deck 20 to the tape deck 21, it is possible to give priority to the dubbing operation from the tape deck 21 to the tape deck 20 by changing the connection of the third switch SW4a. Those skilled in the art will be able to easily understand the disclosure of this specification.

Furthermore, the presence or absence of a release contact (contact 4) for each changeover switch is not directly related to this invention and may be omitted.

[Brief explanation of drawings]

Fig. 1 is a recording signal switching circuit diagram of an embodiment of this invention, Fig. 2 is a circuit diagram showing another usage of the recording signal switching circuit of this invention embodiment, and Fig. 3 is a recording signal switching circuit diagram of a conventional example. It is.

Claims (1)

[Scope of utility model registration request] A group of signal input terminals, a first "REC" terminal to which the signal input terminal of the first tape deck should be connected, a first "PB" terminal to which the signal output terminal of the tape deck should be connected, and a signal input of the second tape deck. A second "REC" terminal to which the terminal should be connected, a second "PB" terminal to which the signal output terminal of the tape deck should be connected, each signal input terminal of the signal input terminal group and the second "PB" terminal a first recording signal changeover switch in which the first "REC" terminal is connected to each contact and the first "REC" terminal is connected to a switching piece, each signal input terminal of the signal input terminal group and the first
A second recording signal selection switch has the "PB" terminal connected to each contact and the second "REC" terminal connected to the switching piece, and the switching pieces of the first and second recording signal selection switches are both connected to the When connected to the second "PB" terminal connection contact and the first "PB" terminal connection contact, the connection between one of the [PB] terminals and the contact to which the [PB] terminal should be connected is canceled. a third changeover switch that operates in conjunction with the first or second recording signal changeover switch, and an input signal in which each of the signal input terminals and each of the [PB] terminals are connected to contacts and the switching piece is connected to an output terminal. A recording signal switching circuit characterized by comprising a changeover switch.