JPS593368Y2 - tape recorder - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a tape recorder capable of stereo recording.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In the figure, 1 is a receiving antenna, and a broadcast signal captured by this antenna 1 is applied to a first tuner circuit 2 and a second tuner circuit 3.

These tuner circuits 2 and 3 include high frequency amplification, frequency conversion, and intermediate frequency amplification circuits, and output intermediate frequency signals.

The output end of the first tuner circuit 2 is connected to a stereo separation circuit 5 via a first detection circuit 4.

Further, the output end of the second tuner circuit 3 is connected to the second detection circuit 6.

Next, 7 and 8 are interlocking function changeover switches each having three fixed contacts a, l), c and a movable contact d.

The fixed contact a of the changeover switch 7 is the stereo separation circuit 5
The fixed contact S is connected to the output end of the first detection circuit 4, and the fixed contact C is connected to the external input terminal 9.

Furthermore, the fixed contact a of the changeover switch 8 is connected to the stereo separation circuit 5.
The fixed contact C is connected to the left signal output end of the second detection circuit 6, and the fixed contact C is connected to the external input terminal 10.

Note that the changeover switch 7.8 is one of the changeover switches 7.
When the movable contact d of the switch 8 is connected to the fixed contact a, the movable contact d of the other changeover switch 8 is also connected to the fixed contact a.

Next, 11.12 is the first. The input terminal of the first amplifier 11 is connected to the movable contact d of the changeover switch 7, and the input end of the second amplifier 12 is connected to the movable contact d of the changeover switch 8.

Furthermore, the output end of the first amplifier 11 is connected to a first speaker 14 via a speaker selector switch 13 and to a first recording head 16 via a head selector switch 15.

The output terminal of the second amplifier 12 is connected to the speaker selector switch 11
It is connected to the second speaker 1B via the head selector switch 19, and to the second recording head 20 via the head selector switch 19.

Note that the speaker changeover switch 13.17 and the head changeover switch 15.19 are configured to operate in conjunction with each other.

Also, the above 1. The second recording heads 16 and 20 together constitute one stereo recording head 21.

Next, the above 1. A switch 22 is connected between the input terminals of the second speakers 14 and 18, and the speaker selector switch 1
A changeover switch 23 is connected in parallel to 3.

In addition, the above 1. A changeover switch 24 is connected between the input terminals of the second recording head 16 and 20, and a changeover switch 25 is connected in parallel to the head changeover switch 19.

In addition, the above changeover switches 22 and 23 and changeover switch 2
4.25 are configured to interlock with each other.

Next, let's explain the operation.

As a premise, at the beginning of the explanation of operation, selector switch 13,
15. It is assumed that 17, 19 degrees 22 to 25 are all off.

First, when the movable contact d of the function changeover switch 7:8 is connected to the fixed contact a, the right and left signal output ends R, L of the stereo separation circuit 5 are connected to the first. It is connected to the input end of the second amplifier it, 12.

Next, when the speaker selection switch 13.17 is turned on, if the first tuner circuit 2 is receiving a stereo broadcast, the first tuner circuit 2 is turned on. The playback sound of the right signal and left signal is output from the second speaker 14 and 18, respectively, and can be heard in stereo, and the first
When the tuner circuit 2 is receiving monaural broadcasting, the first. The same monaural sound can be heard from each of the second speakers 14 and 13.

In addition, the head changeover switch 15. ．． 19, depending on the state of the first tuner circuit 2 described above, either the right and left stereo signals are recorded on two tracks of the magnetic tape via the recording head 16.20, or the same signal is recorded on the two tracks. A monaural signal is recorded.

By turning on both the speaker changeover switch 13.17 and the head changeover switch 15.19, it is possible to listen to and record the reproduced sound at the same time.

Next, when the movable contact d of the function changeover switch 7.8 is connected to the fixed contact 1. The output terminals of the second detection circuits 4 and 6 are connected to the output terminals of the first and second detection circuits 4 and 6, respectively. It is connected to the input end of the second audio amplifier 11.12.

At this time, when the speaker selection switch 13.17 is turned on, the reproduced sound of the first broadcast received by the first tuner circuit 2 from the first speaker 14 can be heard, and the reproduced sound of the first broadcast received by the second tuner circuit 3 from the second speaker 18 can be heard. Ru.

You can listen to the playback of the second broadcast.

Above 1st. It goes without saying that if the second broadcast is the same broadcast, and the same sound is different, then each broadcast can be listened to.

Also, when the head changeover switch 15.19 is turned on, the above-mentioned first. A second broadcast signal is recorded on two different tracks of the magnetic tape.

By the way, while listening to the reproduced sound with the speaker selection switch 13.17 turned on, the first. Second tuner circuit 2
, 3 to different broadcasts, the speaker selector switch 13.17 and the ped selector switch 15.1.
9 is turned off and the changeover switches 22.23 and 24.25 are turned on, the first and second speakers 14
．． 18, the first tuned by the first tuner circuit 2 from both sides.
You can listen to the broadcast playback sound, and at the same time record head 16.20
A second broadcast signal tuned by the second tuner circuit 3 is recorded onto the magnetic tape via the second tuner circuit 3.

In other words, it is possible to record the second broadcast while listening to the reproduced sound of the first broadcast, or to record a so-called counterprogram.

At this time, since the recorded second broadcast signal is transmitted through the two recording heads 16 and 20, when the recorded tape is played back, the S/N ratio is good and the output is large.

Next, move the movable contact d of the function changeover switch 7.8 to the fixed contact C.
, the external input terminals 9 and 10 are connected to the first .
It is connected to the input end of the second amplifier.

Output signals from a microphone, record player, tape recorder, etc. are applied to the external input terminals 9 and 10.
Here, the explanation will be continued assuming that first and second microphones (not shown) are connected to the terminals 9 and 10, respectively.

First, when you turn on the speaker selection switch 13.17, the first. from the second speaker 14.18 respectively to the first. The sound captured by the second microphone can be heard.

Also, when the head selector switch 15°19 is turned on, the first
．． The audio signal from the second microphone is transmitted to the magnetic head 16,
2.0 on different tracks of the magnetic tape.

Also, when the changeover switches 13.17 and 15.19 are turned off and the changeover switches 22 to 25 are turned on, the sound from the first microphone is changed to the first microphone. The sound from the second microphone can be heard from both the second speakers 14 and 18, and the sound from the second microphone can be heard from the recording head 1.
Recorded on magnetic tape via 6.20.

The first terminal is connected to the external input terminals 9 and 10. If you connect a second record player, the sound played by the second record player will be transferred to the first record player.
While listening through the second speaker 14.18, the audio signal from the second record player can be recorded in monaural form via the recording head 18.20.

In the above embodiment, the function selector switch 7.8, the speaker selector switch 13.17, and the head selector switch 15.1 are used.
9, changeover switch 22, 23, changeover switch 24.25
are linked, but may be individually switchable.

If the speaker selector switch 13.17 and the head selector switch 15.19 can be switched independently, the functions of the selector switch 23 and the selector switch 25 can be shared by the selector switch 13.19 or the selector switch 17.15. be able to.

As described above, according to the present invention, the output signal of the first audio amplifier is transferred to the first audio amplifier. While listening through the second speaker, the output signal of the second audio amplifier is transmitted to the first speaker. Recording can be performed on a magnetic tape via the second recording head, and conventional stereo playback and stereo recording can be performed by changing each switch, thereby expanding the uses of the apparatus.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the present invention. 9.10...1st. 2nd external input terminal, 11.12.
...1st degree second audio amplifier, 13.17...1st degree. 2nd speaker changeover switch, 14.18...1st. Second
Speaker, 15.19...1st. 2nd head changeover switch, 16.20...1st. 2nd recording head, 22~
25... Selector switch.

Claims (1)

[Scope of utility model registration request] The output end of the first audio amplifier is connected to the first speaker and also connected to the first recording head via the head selection switch, and the output end of the second audio amplifier is connected to the second recording head and connected through the speaker selection switch. and connect it to the second speaker, and connect it to the first speaker. between the input terminals of the second speaker and the input terminal of the first speaker. between the input terminals of the second recording head, respectively. A tape recorder connected to a second changeover switch.