JPH03263776A - Connection system for audio signal processing device and additional device - Google Patents

Abstract

PURPOSE:To obtain an inexpensive audio signal processing device of small and multi-function type by using a three-pole type stereophonic earphone jack, and so constituting the jack as to be capable of selectively changing a connection to an external additional device. CONSTITUTION:In the state wherein nothing is coupled to a threepole stereophonic earphone jack 2A, a low-frequency signal from a low-frequency amplifier 1 is outputted from a speaker 3 via mechanical contacts S1 and S2. When an earphone 17 as an additional device is connected, a two-pole type earphone plug 4b is coupled to the three-pole type stereophonic earphone jack 2A. On the other hand, a tone squelch 19, and an information receiving and displaying device as additional devices are connected, a three-pole type earphone plug 4a connected to each device is coupled to the three-pole type stereophonic earphone jack 2A. As a result, a low-frequency signal from the low-frequency amplifier 1 is inputted to the additional devices via a contact J1, and a signal from the additional devices is outputted from the speaker 3 via another contact J2.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for connecting an audio signal processing device such as a receiving device to an additional device such as an earphone, a #-squelch, or an information reception display device. It is.

Figure 2 shows the configuration of the low frequency output part and earphone jack part of a general receiving device (signal processing equipment).
This is a U route diagram, and in the figure, 1 is a low frequency amplifier of the receiving device, 3 is a speaker connected to the low frequency amplifier 1 via a contact S, 12 is a two-pole earphone jack, and J is this earphone jack 12. 6. In the above configuration, when the earphone plug (not shown) is not inserted into the earphone jack 12, the contact point contacts the two-pole earphone plug terminal (not shown) inserted into the earphone jack 12. The low frequency signal that is output is.

It is output from the speaker 3 that passes through the contact S of the earphone jack 12. ~ side, earphone jack 12 &,: When the earphone plug is inserted, the terminal of the earphone plug comes into contact with the contact point I, and the contact point 5 portion of the earphone jack 12 &, is elastically deformed, the contact point S1 is separated, and the The signal is not output to the speaker 3, but is sent through the contact J from the earphone plug to the earphone (not shown).

This kind of connection method is complicated by outputting low frequency signals to an additional device such as earphones, but it is difficult to output the low frequency signal to an additional device such as earphones.
cannot be sent to the receiving device.

Therefore, a system in which the device body (audio signal processing device) has an earphone via an earphone jack/plug and a control bag n is connected to the remote control 1 is also disclosed, for example, in JP-A-59-17792. ing. Fig. 3 is a circuit diagram showing the conventional ``B'' type disclosed in the publication, and the figure is 9, 1 is a low frequency amplifier, 2 is a 3-pole stereo earphone jack, 3 is a speakerphone jack, 4a is jack 2 (
, 2 differences 1, 3-prong stereo earphone plug,
4b is a two-pole earphone plug that is inserted into jack 2, and each f jig 4a and 4b is an additional device.
) is connected to the remote control transmitter IG and earphones]7. Note that the remote control transmitter 16 is equipped with an earphone 17.
The two-pole earphone jack 1.6a into which the plug 4 is inserted for connection is disabled.

In addition, ]3 is a relay for switching the output of low frequency signals, and 14 is provided integrally with the relay 13.
This switch 14 is normally on the speaker 3 side, and is switched to the jack 2 side only when the relay 13 is energized by current flowing through it. Furthermore, 15 is a 1-transistor for controlling the operation of the relay 13, and 18 is a resistor 5. Jl, J2 are the contacts of jack 2, G is the ground contact of jack 2, Ga
, P'], , P2 are the contact points G*J], respectively, when the plug 4a is inserted into the jack 2 with the difference L2.
Terminal connected to J2, Gb is plug 4]) jack 2
2) A terminal that comes into contact with the ground contact G and the contact 12 when the connector is inserted into the jack 2;

Next, even explain the operation.

When plugs 4a, 4b are not inserted into jack 2, relay ]3 is energized and shear L/- switch 1
4 is located on the speaker 3 side, and the low frequency signal (ff) from the low frequency i9 amplifier 1 is outputted to the speaker 3. 9 Insert the bipolar plug 4b into the jack 2 and connect the earphone 1.
7 is connected, the contact J1 and the contact G of the jack 2 are electrically connected via the earphone 17.

Therefore, a current flows through the transistor 15 and the resistor 18 due to the applied voltage Vcc, and the current increased by the h transistor 15 also flows to the relay 13, and the switch 14 is switched to the jack 2 side and the earphone 1
7, a low frequency signal (voice double) is output.

In addition, if you insert a three-pole plug 4a into jack 2 and connect the remote control transmitter ■6,
The contact Jl is not electrically connected to the ground contact G at the contact 7, and no current flows through the transistor 15.

Therefore, no current flows to IJ relay 3, and switch 14
remains on the speaker 3 side and the low frequency signal (audio signal (J) is output to the speaker 3, while the remote control signal from the remote control transmitter 16 is sent via the terminal P2 of the plug 4a and the contact J2 of the jack 2. With the remote control transmitter 16 connected in this way, connect the plug 4 to the remote control transmitter 1G jack],, 6a.
If the earphone 17 is connected to the remote control transmitter ]6 by inserting the plug 4b of the earphone 17 into the jack 2,
Contact 2) 1 of jack 2 in the same way as when directly inserting
is grounded, current flows through the relay 13, the switch 14 is switched to the jack 2 side, and the low frequency signal is transmitted from the jack 2 to the earphone connected to the remote control transmitter 16 via the remote control transmitter]6. 17.

i) In the connection method shown in Figure 3, the L2 Tericon transmitter 16 is connected via the earphone jack 2, and the remote control is sent to the device itself. When the earphone jack 2 or the remote control transmitter 16 jack is connected to the earphone jack 2 or the remote control transmitter 16 jack, a low frequency signal is sent to the earphone 17 when the L earphone 17 is connected. , it is possible to exchange signals between the remote control transmitter 1 (5), which is an additional device, and the main body of the device 9. [Problem to be solved by the invention] However, with the conventional connection method, , low frequency (switching the n number between the speaker 3 side/jack 2 side)
As shown in the figure, relay 13. Switch 14, @g
(TunEE V cc; for excitation of relay 13), ) - transistor 15. Resistors, capacitors, etc. are required, which complicates the circuit configuration, increases component costs, and increases consumption current, making it unsuitable for miniaturizing the device.)

In addition, the method shown in Figure 3 is a remote control transmitter]-
When 6 is connected as an additional device, the transmitter 16 and the speaker 3 are completely disconnected, and when the additional device σ is connected, it receives a signal from the additional device. If that signal number is output to speaker 3, it will be 1/%-]
The usage and ideas are very sad. t'f voice ffi signal processing device with an additional device and 1. 4;a ``3- Connect a device with other audio signal processing functions, etc. (tone screener, information display device, etc.), and press the button for exchanging audio signals between the additional device and the audio processing device. It's fun.

If it is possible to output Iochin from an additional device through a speaker, it is possible to greatly expand the functionality of the device9.
This invention was made in order to solve the problems mentioned in item L. It is possible to connect an external additional device via an earphone jack with a simple circuit configuration, and it also makes it possible to connect an external device using a simple circuit configuration. , ゛By making it possible to exchange signals and output signals from the additional device from the speaker, it is possible to obtain an inexpensive, compact and multi-functional audio signal processing device.In addition, the connection between the audio signal processing device and the additional device The purpose is to obtain a connection method. .

Means 1 for overcoming the problem The audio signal processing device according to the invention has a connection method with the additional device, which has an audio signal processing section, a sub-power, and an input jack. Installation: In order to connect the earphone jack via the earphone jack, the earphone jack is configured as a right three-pole stereo earphone jack, and the ground of the three-pole stereo earphone jack is connected to the earphone jack. One of the two contacts (a) of the two contacts is connected to the audio signal processing section, and the other of the two contacts a) is connected to the speaker, and the -
- one contact is connected to the speaker via a first mechanical contact that becomes open when the earphone plug is inserted into the three-pole stereo earphone jack, and the other contact is connected to the speaker through the first mechanical contact that becomes open when the earphone plug is inserted into the three-pole stereo earphone jack. It is connected to the audio signal processing device through a second mechanical contact that becomes open when the earphone plug is inserted into the jack, and connects the two-pole or three-pole earphone plug connected to the additional device to the three-pole earphone plug. The audio processing device is connected to the audio processing device by inserting it into a stereo earphone jack.

[Function] In which connection method of the audio signal processing device and the additional device in this invention, when nothing is inserted into the three-pole stereo L/earphone jack, the signal from the audio signal processing section 12 is transmitted to the first... Through the second mechanical contact 1. The signal is output from the speaker or the crow.

On the other hand, when the three-pole earphone plug connected to the additional device is inserted into the three-pole stereo earphone jack and the additional device is connected to the audio signal processing device, the first. The second mechanical contact is opened, and the signal from the audio signal processing section is manually input to the additional device through one contact, and at the same time, the signal from the additional device is sent to the speaker through the other contact. and output from this speaker.

Also, when connecting earphones as an additional device to the audio signal processing device, the first. , the second mechanical contact is opened, and the signal from the roundabout processing unit is output from the earphone via one contact. At this time, the other contact connected to the speaker is grounded through the ground terminal of the two-pole earbond plug, so it does not fly off even when the voice i is output from the speaker.

[Embodiments of the invention] Hereinafter, one embodiment of the present invention will be explained with reference to the drawings.

In Fig. 1 (a) to (d), 1 is the low frequency amplifier (audio signal processing section) of the receiving device, 2A is the three-pole stereo earphone jack, and 3 is the signal output from the low frequency amplifier 1. The loudspeaker 0 is the ground contact point 1, 11° of the 3-pole stereo earphone jack 2A. 12 is jack 2A
The contact Jl is connected to the low frequency amplifier, and when the earbon plug is inserted into the jack 28, the end of the plug 4B or 41) is connected to the end f )) ] - or P (described later). The contact point J2 is
It is connected to the speaker 3, and comes into contact with the terminal P2 or ground end FGk) (described later) of the plug 4a or 4b when the earphone plug is inserted into the jack 2A. SaJ'
When the earphone plug is inserted into the jack 2A, the ground terminal Ga of the plug 4d or 7 or 41 also comes into contact with L2 or Gb.

Furthermore, the contact J] is connected to the speaker 3 via the first mechanical contact S1 which becomes open when the earphone plug is pushed into the jack 2A, and the contact J2 is connected to the speaker 3 via the first mechanical contact S1 which becomes open when the earphone plug is pushed into the jack 2A. ; - the second σ is in the open state; it is connected to the low frequency amplifier 1 via the mechanical contact S2;

4a is a three-pole type earphone plug connected to the additional device shown in FIGS. 1 (C) and (d), respectively; 4b is a two-pole earphone plug connected to the earphone 17; G;
a, P 1, P 21j When plug 4a is inserted into jack 2A, each contact G * LJ 1
.

The end in contact with J2 f-1G b is jack 2 of plug 4b
A is a terminal that comes into contact with ground contact G and contact J2 when plugged in, and P is a terminal that comes into contact with contact J1 when plug 4b is inserted into jack 2A.

In addition, in Figure 1--(e), 5 is a tone detection circuit that receives the plug 4a (Q terminal P1 or 1-3) and detects i-+1-- of a predetermined frequency; This is an electrical switch that is opened and closed by a false signal from the -on detection circuit 5 and outputs the 1.-on of a predetermined frequency from among the signals input from the terminal 143 to the terminal I)2. The electric switch 6 constitutes a tone squelch 19 as an additional device.

Furthermore, in FIG. 1(d), 7 receives a signal from the terminal P of the plug 4a and outputs the signal to the terminal P2A'fj while passing only the signal in the voice band U.
1,113F), 8 is a bypass filter (l(l) F') that passes signals of a higher frequency than the audio frequency, and 9 is a connector 8 that passes through this bypass filter 8. This is a signal converting device for displaying the signal on the display device 11, and includes a bandpass filter 7, a bypass filter 8, . Modem9. The information receiving and displaying device 20 is constituted by the signal converting device] and the display device N1 as an additional device.Next, the operation of this embodiment will be explained.

First, as shown in No. 11M(a), when no cable is inserted into the three-pole stereo earphone jack 2A, the low frequency signal No. 11 from the low frequency amplifier 1 is connected to the mechanical contact S and the mechanical contact S.
The signal is output from the speaker 3 via 2.

When connecting the earphone 17 as an additional device, the first
As shown in Figure (1)), the two-pole earphone 4b connected to the earphone 17 is inserted into the three-pole stereo earphone jack 2A. As a result, terminal J], ,
, J2 is pushed into the plug 4 and elastically deforms, forming a mechanical contact 81. S2 is opened, while the low frequency sound from the low frequency amplifier is outputted from the earphone 7 via the contact J1. At this time.

The contact J2 connected to the speaker 3 is the ground terminal ab of the plug 4b and the ground terminal G of the two jacks.
Since the speaker 3 is grounded through the speaker 3, no low frequency signal is output from the speaker 3.

On the other hand, additional devices such as a squelch 19 as shown in No. 1.1M (C,) and an information receiving and displaying device 20 as shown in (1) in Fig. 1 are connected. As shown in FIGS. 1(c) and 1(d), insert the 3-electrode earphone plug 4a connected to the container H into the 3-electrode earphone jack 2A.At this time, as described above, Similarly, end I J
I, , 12 is the plug 4. a The LJ push bar is elastically deformed and the first mechanical contacts Sl and S2 are opened.

Therefore, the low frequency atonement from the low frequency amplifier 1 is connected to the contact J.
At the same time, the signal 1 from the additional device is input to the additional device through , 1 and sent to speaker 3 through contact J2. be done.

For each device, τ, concrete +, r- (-7).To explain, in the tone squelch 9 shown in Fig.
When 11.a is inserted, the low frequency signal output from the ``low frequency amplifier'' is connected to the contacts of jack 2A, 11. The 1.-on detection circuit 51.1 is connected via the terminal P1 of the plug 4a. ,",Only when the tone detection circuit 5 detects the target frequency 1..., the electric switch 6 is closed, and the low frequency signal of the target frequency is transmitted from the terminal P2 of the plug 4a. Jack 2A contact, 127\ input, speaker:
Output from 3.

In the information receiving and displaying device 20 as shown in FIG. 1(d),
Jack 2A contact, ■1 to plug 4 +1 end IP
It is divided into low frequency signal g-if input to 1, bandpass noise tough for voice band and bypass filter 8.
The voice training frequency signal obtained by the vocal band pandopath noise filter is input to the plug 4a (7) terminal 1) 2) to the contact J24r of the jack 2A, and is output from the speaker 3. On the other hand, the voice range, r: The high frequency signal 6 is separated from the bypass filter 8, and after being converted into a digital signal by the modem 9, it is sent to the signal converter 1.01.1. -The number display device 11'' is displayed as C information.

According to the method of this embodiment, the three-electrode step 1
By simply using the earphone jack 2A, the 3-pole plug, and the earphone plug 4a, you can externally switch the low frequency pickup from the low frequency amplifier 1. Both L and external outputs 1-5 Similar frequency signals can be converted externally, and then the low frequency signal after conversion can be manually input to the jack 2A and output from the input signal. By inserting 4b, the function as a conventional earphone jack can be used as is.

At this time.

1 mechanical contact 8 without providing special electrical 1i11 paths
With a simple circuit configuration such as 1.82, additional devices can be connected, and audio processing is inexpensive.

You can get something small and multifunctional.

In the embodiment described in IZ, a receiving device and an earphone 17 as an additional device are used. Although we have explained the case where one tone squelch is connected to the information receiving and displaying device 20, it is also possible to connect a tone squelch, a cassette 1 recorder, a voice recording device, etc. to a voice modification device, data processing device, information display. It is widely applicable to connecting additional equipment such as devices and control devices.

Further, other devices can be used as long as they have the same function as the stereo earphone jack and plug.

[Effects of the invention 1 As stated above 1. According to the present invention, an external additional device can be connected with an extremely simple circuit configuration using a three-pole stereo earphone jack.12. Ia 1 between additional devices
It has two configurations so that it can exchange ``Tj'' and output No. 411 from the A/4 processing device from the Subi force. ℃ It has the effect of being small and multi-functional 4.

[Brief explanation of drawings]

1(a) to 1(d) show a connection method between a voice signal processing device and a 44-processing device according to an embodiment of Koyama's invention, and FIG. 1(a) shows a connection method to which this method is applied. Figure 1(b) is a circuit diagram showing the structure of the connecting part. Figure 1(b) is a circuit diagram showing the case where earphones are connected to the additional device. Figure 1(c) is the circuit diagram showing the case where a tone squelch is connected as an additional device. The circuit diagram shown in Fig. 1(d) is a circuit diagram showing the case where an information reception display device is connected to the additional device, and Fig. 2 is a circuit diagram showing the low frequency output part and earphone jack part of a general receiving device. 1 Circuit Diagram 5 Showing the Configuration FIG. 3 is a circuit diagram showing the connection method between the conventional right voice signal processing device and the additional device. In the figure, 1-Low frequency amplifier (Kusei Shinkyu/processing section),
2 A- 3-pole stereo earphone jack, 3- speaker, 4a 3-pole stereo earphone plug, 4. b
- 2-pole earphone plug, 17 - earphone, 19 tone scale, 20 - information reception display device, G - ground contact, J]5. J2 - contact, Sl - first mechanical contact, S2 - second mechanical contact. In addition, in the drawings, the same reference numeral 2 or equivalent parts are shown.

Claims (1)

[Claims] Added via the earphone jack to an audio signal processing device having an audio signal processing unit, a speaker that outputs a signal from the audio signal processing unit, and an earphone jack provided between the audio signal processing unit and the speaker. A connection method for connecting devices, wherein the earphone jack is configured as a three-pole stereo earphone jack, and the three-pole stereo earphone jack is configured as a three-pole stereo earphone jack.
2 other than the ground contact of the polar stereo earphone jack
One of the two contacts is connected to the audio signal processing section, the other of the two contacts is connected to the speaker, and the one contact is connected to the three-pole stereo earphone jack. is connected to the speaker via a first mechanical contact that becomes open when the earphone plug is inserted into the earphone jack, and the other contact becomes open when the earphone plug is inserted into the three-pole stereo earphone jack. By inserting a two-pole or three-pole earphone plug connected to the audio signal processing device via a second mechanical contact and connected to the additional device into the three-pole stereo earphone jack, A connection method between an audio signal processing device and an additional device, characterized in that the additional device is connected to the audio processing device.