JP2001238284A - Earphone microphone for mobile phone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an earphone microphone for mobile phone by which a plurality of talkers can simultaneously take part in a conversation with one mobile phone 10. SOLUTION: A receiver 26 and a microphone 28 are electrically connected via a cord 24 to an earphone microphone plug 22 that can freely be plugged in/out of an earphone microphone jack 12 of the mobile phone 10, the microphone 28 is disposed so that it is placed at the mouth of a user when the receiver 26 is mounted on the ear and a sub earphone microphone jack 30 is provided to the cord 24. A sub receiver 38 and a sub microphone 40 are electrically connected via a sub cord 36 to a sub earphone microphone plug 34, and the sub microphone 40 is disposed so that it is placed at the mouth when the sub receiver 38 is mounted on the ear. When the sub earphone microphone plug 34 is inserted to the sub earphone microphone jack 30, the receiver 26 and the reveler 38, and the microphone 28 and the sub microphone 40 are connected electrically respectively in parallel to the earphone microphone plug 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earphone microphone for a portable telephone, which enables a plurality of speakers to talk to one portable telephone or a PHS and to listen to a voice. It is.

[0002]

2. Description of the Related Art In recent years, mobile phones and PHS have become widespread, and there are many situations in which a mobile phone must be used while driving a car. From the viewpoint of accident prevention, there is a strong demand for hands-free use. I was Therefore, an earphone microphone jack is provided in a housing of a mobile phone or the like, and an earphone microphone that can be freely inserted into and removed from the housing is becoming popular. In this conventional earphone microphone, the receiver and microphone are electrically connected with a single cord to the earphone microphone plug that can be freely inserted and removed from the earphone microphone jack, and when the receiver is attached to the ear, the microphone is placed in the mouth so that it is located near the mouth It is a structure arranged in.

[0003] Using such an earphone microphone,
Just by putting the receiver on your ear, you can talk without holding the mobile phone by the side and you can use both hands freely.

[0004]

The above-mentioned conventional earphone microphone has no problem when one speaker uses one portable telephone. However, if multiple speakers want to participate in the conversation at the same time, the receiver of the earphone microphone must be handed over each time, which is troublesome, and the driver is required to attach and remove the receiver. There is a problem that attention is easily killed from driving a car.

[0005] The present invention has been made in view of the circumstances of the prior art, and allows a plurality of speakers to speak to one portable telephone, and also allows a user to listen to a voice. It is an object of the present invention to provide an earphone microphone for a mobile phone that allows speakers of the same type to participate simultaneously.

[0006]

In order to achieve the above object, an earphone microphone for a mobile phone according to the present invention is provided with a single earphone microphone plug which can be freely inserted into and removed from an earphone microphone jack provided on the mobile phone. A plurality of receivers are electrically connected in parallel via a cord, and a microphone is arranged on each of the cords so that each of the receivers is positioned in a mouth when the receiver is attached to an ear.A plurality of the microphones are connected to the earphone microphone plug. Are electrically connected in parallel via the cord.

A receiver is electrically connected via a cord to a single earphone microphone plug which can be freely inserted into and removed from an earphone microphone jack provided on the portable telephone. A microphone is arranged on the cord, the microphone is electrically connected to the earphone microphone plug via the cord, a sub-earphone microphone jack is arranged on the cord, and the sub-earphone microphone jack can be inserted and removed freely. The sub-earphone microphone plug is electrically connected to the sub-receiver via the sub-cord, and when the sub-receiver is attached to the ear, a sub-microphone is arranged on the sub-cord so as to be located in the mouth, and the sub-earphone microphone plug is connected to the sub-earphone microphone plug. The sub microphone is electrically connected via the sub cord, and the sub When the sub-earphone microphone plug is inserted into the earphone microphone plug, the receiver and the sub-receiver are electrically connected in parallel to the earphone microphone plug, and the microphone and the sub-microphone are electrically connected in parallel to the earphone microphone plug. You may comprise so that it may be connected.

[0008]

FIG. 1 shows a first embodiment of the present invention.
This will be described with reference to FIG. FIG. 1 is an electrical connection diagram of a first embodiment of an earphone microphone for a mobile phone according to the present invention. FIG. 2 is an external structural view of the earphone microphone for the mobile phone of FIG.

First, in FIG. 2, an earphone microphone 20 of the present invention can be freely inserted into and removed from an earphone microphone jack provided on the housing of the mobile phone 10 by an earphone microphone plug 22. And
A receiver 26 is provided at the tip of the earphone microphone plug 22 via a cord 24, and when the receiver 26 is attached to the ear, the microhorn 28 is separated from the receiver 26 by a length L so as to be in the position of the mouth. Code 24
Is similar to a conventional earphone microphone. However, in the present invention, a joint portion 32 having the sub-earphone microphone jack 30 is provided in the middle of the cord 24. Further, a sub-receiver 38 is disposed at the tip of a sub-earphone microphone plug 34 which can be freely inserted into and extracted from the sub-earphone microphone jack 30 via a sub-cord 36. When the sub-receiver 38 is attached to an ear, the sub-receiver 38 is located at a mouth position. As described above, the sub microphone 40 is disposed on the sub cord 36 at a distance L from the sub receiver 38. Note that this sub-earphone microphone plug 34
The structure of the sub-cord 36, sub-receiver 38 and sub-microphone 40 is exactly the same as that of the conventional earphone microphone.

The electric circuit is as shown in FIG.
With the sub-earphone microphone plug 34 inserted into the sub-earphone microphone jack 30, the receiver 26 and the sub-receiver 38 are electrically connected in parallel to the earphone microphone plug 22, and the microphone 28 and the sub-microphone 40 are connected in parallel to the earphone microphone plug 22. It is comprised so that it may be electrically connected to. And earphone microphone plug 2
2 is inserted into the earphone microphone jack 12 of the mobile phone 10, the sound output from the mobile phone 10 is amplified by the receiver 26 and the sub receiver 38, and the sound given to the microphone 28 and the sub microphone 40 is It is input to the telephone 10.

In such a configuration, two persons having the receiver 26 and the sub-receiver 38 respectively attached to their ears simultaneously
One mobile phone 10 can participate in a conversation. Therefore, unlike a conventional earphone microphone, it is not necessary to hand over the receiver one by one, which is convenient for safe driving. In addition, since two persons can participate in the conversation at the same time, the conversation does not end. If the mobile phone of the other party of the call also has the earphone microphone of the present invention, a plurality of persons on the other side of the call can simultaneously participate in the conversation.

In the first embodiment, when talking alone, the sub earphone microphone jack 30
The sub-earphone microphone plug 34 may be pulled out, and conversation may be performed between the receiver 26 and the microphone 28. In addition, the earphone microphone plug 22 and the sub-earphone microphone plug 3
By making the shape and dimensions of 4 the same, the sub-earphone microphone plug 34 may be directly inserted into the earphone microphone jack 12 of the mobile phone 10 and the sub-receiver 38 and the sub-microphone 40 may be used for conversation. Further, a plurality of connected bodies each including the earphone microphone plug 22, the receiver 26, the microphone 28, and the sub-earphone microphone jack 30 are prepared, and the earphone microphone plug 22 of another connected body having the same structure is inserted into the sub-earphone microphone jack 30. By doing so, it is also possible for three or more persons to participate in a conversation at the same time by being connected in a pot-vine manner. Code 24
A plurality of sub-earphone microphone jacks 30 are provided, and a sub-earphone microphone plug 34 and a sub-receiver 38
By appropriately connecting the connector provided with the sub microphone 40 and the sub microphone 40, three or more persons may be able to talk.
Further, the sub-earphone microphone jack 30 is not limited to the one arranged in the middle of the cord 24 as in the above embodiment, but may be arranged near the earphone microphone plug 22 or near the microphone 28.

Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 3 is an electrical connection diagram of a second embodiment of the earphone microphone for a mobile phone according to the present invention.

In the second embodiment shown in FIG. 3, first to third microphones 42, 4 are provided between a microphone signal terminal 22a of the earphone microphone plug 22 and a ground terminal 22b.
4,446 are electrically connected in parallel. The primary coil of the matching transformer 48 is connected between the receiver signal terminal 22c of the earphone microphone plug 22 and the ground terminal 22b, and the first to third receivers 50, 52, and 52 are respectively connected to three independent secondary coils. 54 are respectively electrically connected.

In such a configuration, since impedance matching is achieved by the matching transformer 48,
The first to third receivers 50, 52, and 54 are efficiently driven, and the first to third receivers 50, 52, and 54 can output a sound with sufficient volume. Although the matching transformer 48 functions as an impedance matching circuit in the second embodiment shown in FIG. 3, matching may be achieved by another circuit. Then, as in the first embodiment, it is a matter of course that some receivers and microphones can be freely connected and separated by using the sub-earphone microphone jack 30 and the sub-earphone microphone plug 34.

Further, a third embodiment of the present invention will be described with reference to FIGS. FIG. 4 is an electrical connection diagram of a third embodiment of an earphone microphone for a mobile phone according to the present invention. FIG. 5 is a circuit diagram of an example of the microphone amplifier in FIG. FIG. 6 is a circuit diagram of an example of the speaker amplifier in FIG.

In the third embodiment shown in FIG. 4, the microphone signal terminal 22a of the earphone microphone plug 22 is electrically connected to the first to third microphones 42, 44, 46 connected in parallel via the microphone amplifier 56. Connection. Also, the receiver signal terminal 22c of the earphone microphone plug 22
Are connected to the first to third receivers 5 through the speaker amplifier 58.
0, 52, 54. As shown in FIG. 5, an example of the microphone amplifier 56 appropriately amplifies a signal corresponding to the sound given to the first to third microphones 42, 44, 46 by the first transistor Tr1, and outputs the amplified output. The signal is output to the microphone signal terminal 22a of the earphone microphone plug 22 via the input sound adjusting means including the first variable resistor VR1. An example of the speaker amplifier 58 is shown in FIG.
The output signal supplied to the receiver signal terminal 22c of the second
The signal is appropriately amplified by the transistor Tr2, and the amplified output is given to the third transistor Tr3 via the output sound adjusting means including the second variable resistor VR2, and further amplified. The third transistor Tr3 uses a primary coil of the matching transformer 48 as a load, and first to third receivers 50, 52, and 54 are electrically connected to the secondary coil, respectively.

By using amplifier circuits such as the microphone amplifier 56 and the speaker amplifier 58, the first to third
The volume given to the mobile phone 10 from the microphones 42, 44, 46 can be adjusted as appropriate, and the output volume of the mobile phone 10 is adjusted as appropriate, and the first to third receivers 50, 52, 54 increase the volume. be able to.

Although not shown in the second embodiment and the third embodiment, as in the first embodiment, a pair of a receiver and a microphone is provided on the same cord, and the receiver is worn on the ear. It goes without saying that the microphone is located at the mouth. The cord in which the receiver and the microphone are provided is formed as a single piece from the earphone microphone plug 22 to the middle, and may be branched in the middle, or may be branched from the earphone microphone plug 22 or from the vicinity thereof. good. Further, the receiver and the microphone may be arranged in a pair at an appropriate position of one cord that is not branched. The matching transformer 48 in the second embodiment and the microphone amplifier 56 and the speaker amplifier 58 in the third embodiment are desirably disposed near the earphone microphone plug 22, but may be disposed in the middle of the cord. good. And
Drive voltage Vc for microphone amplifier 56 and speaker amplifier 58
The power c may be supplied from any of the mobile phone 10 or a vehicle and a power supply device provided appropriately and containing a battery or the like. Then, only one of the microphone amplifier 56 and the speaker amplifier 58 may be used. Moreover,
It is not necessary to use any of the amplifier circuits. That is, a plurality of receivers and microphones are electrically connected in parallel to one earphone microphone plug 22 via a cord that branches into a plurality of microphones. When the receivers are attached to the ears, the paired microphones are positioned in the mouth. It is a structure arranged so that

Although the earphone microphone for a portable telephone according to the present invention has been described as being used for a portable telephone in the above description, the portable telephone used in the claims does not include a PHS. It will be easily understood.

[0021]

As described above, since the earphone microphone for the portable telephone according to the present invention is constituted,
It has the following special effects.

In the earphone microphone for a portable telephone according to the first aspect, for one portable telephone,
Multiple speakers can participate in a conversation at the same time. Moreover, it is hand-free, and is particularly convenient for talking with a plurality of speakers including the driver.

According to the earphone microphone for a portable telephone according to the second aspect, the same effect as that of the first aspect can be obtained, and the number of the receivers and the paired microphones can be appropriately determined according to the number of speakers. Can be set to

In the earphone microphone for a portable telephone according to the third aspect, a plurality of receivers are connected. Signals are efficiently transmitted to the receivers, and loudspeakers can be performed at a sufficient volume.

In the earphone microphone for a portable telephone according to the fourth or fifth aspect, by using an amplifying circuit, a sound input given to the portable telephone from a plurality of microphones or a sound amplified from a plurality of receivers. The output can be sized appropriately.

[Brief description of the drawings]

FIG. 1 is an electrical connection diagram of a first embodiment of an earphone microphone for a mobile phone according to the present invention.

FIG. 2 is an external structural view of an earphone microphone for the mobile phone of FIG. 1;

FIG. 3 is an electrical connection diagram of a second embodiment of an earphone microphone for a mobile phone according to the present invention.

FIG. 4 is an electrical connection diagram of a third embodiment of an earphone microphone for a mobile phone according to the present invention.

FIG. 5 is a circuit diagram of an example of the microphone amplifier in FIG. 4;

FIG. 6 is a circuit diagram of an example of a speaker amplifier in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Cellular phone 12 Earphone microphone jack 20 Earphone microphone 22 Earphone microphone plug 24 Cord 26 Receiver 28 Microphone 30 Secondary earphone microphone jack 32 Joint part 34 Secondary earphone microphone plug 36 Secondary cord 38 Secondary receiver 40 Secondary microphone 42 First microphone 44 Second microphone 46 Third microphone 48 Matching transformer 50 First receiver 52 Second receiver 54 Third receiver 56 Microphone amplifier 58 Speaker amplifier

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04R 5/04 H01R 17/04 510A

Claims (7)

[Claims] 1. A plurality of receivers are electrically connected in parallel via a cord to one earphone microphone plug which can be freely inserted into and removed from an earphone microphone jack provided on a mobile phone, and each of the receivers is attached to an ear. Then, a microphone is arranged on each of the cords so as to be positioned in the mouth, and a plurality of the microphones are electrically connected in parallel to the earphone microphone plug via the cords, for a mobile phone. Earphone microphone. 2. A receiver is electrically connected via a cord to one earphone microphone plug that can be freely inserted into and removed from an earphone microphone jack provided on the mobile phone.
When the receiver is attached to the ear, a microphone is arranged on the cord so as to be positioned in the mouth, the microphone is electrically connected to the earphone microphone plug via the cord, and a sub-earphone microphone jack is arranged on the cord. Then, the sub-receiver is electrically connected to the sub-earphone microphone plug which can be freely inserted and removed from the sub-earphone microphone jack via the sub-cord, and when the sub-receiver is attached to the ear, the sub-receiver is connected to the sub-cord so as to be positioned in the mouth. A microphone is disposed, and the sub-microphone is electrically connected to the sub-earphone microphone plug via the sub-cord,
When the sub-earphone microphone plug is inserted into the sub-earphone microphone jack, the receiver and the sub-receiver are electrically connected in parallel to the earphone microphone plug, and the microphone and the sub-microphone are connected in parallel to the earphone microphone plug. An earphone microphone for a mobile phone, wherein the earphone microphone is configured to be electrically connected. 3. The earphone microphone for a mobile phone according to claim 1, wherein the earphone microphone plug is electrically connected to the receiver or the receiver and the sub receiver via an impedance matching circuit. An earphone microphone for mobile phones. 4. An earphone microphone for a mobile phone according to claim 1, wherein said earphone microphone plug is electrically connected to said receiver or said receiver and auxiliary receiver via an amplifier circuit. Earphone microphone for mobile phones. 5. The earphone microphone for a mobile phone according to claim 1, wherein the microphone or the microphone and the sub microphone are electrically connected to the earphone microphone plug via an amplifier circuit. Earphone microphone for mobile phones. 6. The earphone microphone for a mobile phone according to claim 1, wherein the cord is branched midway.
An earphone microphone for a mobile phone, wherein the receivers are respectively arranged at the branched ends. 7. The earphone microphone for a mobile phone according to claim 2, wherein the sub-earphone microphone jack is provided in the middle of the cord.