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JP2001238284

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DESCRIPTION JP2001238284
[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 speak
and to listen to voice toward one portable telephone or PHS. It is.
[0002]
2. Description of the Related Art In recent years, mobile phones and PHS have been widely
spread, and there are many situations where mobile phones etc. can not but be used while
driving a car. It was Therefore, an earphone microphone jack is provided in a housing such as a
mobile phone, and an earphone microphone which can be inserted and removed freely is being
widely used. In this conventional earphone microphone, the receiver and the microphone are
electrically connected with a single cord to the earphone microphone plug which can be inserted
and removed from the earphone microphone jack, and the microphone is positioned so that the
receiver is placed in the ear Is a structure disposed at
[0003]
With such an earphone microphone, by wearing the receiver on the ear, conversation can be
made without putting the mobile phone on the side and both hands can be used freely.
[0004]
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1
SUMMARY OF THE INVENTION The above-mentioned conventional earphone microphones have
no problem in using one mobile phone for one speaker.
However, when multiple speakers want to participate in the conversation at the same time, it is
necessary to hand over the receiver of the earphone microphone, 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 a
plurality of speakers can talk to one mobile phone and can also hear voices, and a plurality of
speakers can be used in conversation. It is an object of the present invention to provide an
earphone microphone for a mobile phone, which is able to simultaneously participate.
[0006]
SUMMARY OF THE INVENTION In order to achieve the above object, the earphone microphone
for a portable telephone according to the present invention is a single earphone microphone plug
that can be inserted into and removed from an earphone microphone jack provided in the
portable telephone. A plurality of receivers are electrically connected in parallel via a cord, and
microphones are respectively disposed on the cords so that when the receivers are worn on the
ear, microphones are disposed on the cords, and a plurality of the microphones are attached to
the earphone microphone plug. Are electrically connected in parallel via the cord.
[0007]
In addition, the receiver is electrically connected via a cord to a single earphone microphone plug
that can be inserted and removed from the earphone microphone jack provided in the mobile
phone, and the cord can be placed in the mouth when the receiver is attached to the ear A
microphone, the microphone is electrically connected to the earphone microphone plug through
the cord, the cord is connected to the sub-earphone microphone jack, and the sub-earphone
microphone is insertable into and removable from the sub-earphone microphone jack A subreceiver is electrically connected to the plug via a sub-cord, and the sub-microphone is disposed
on the sub-cord so that the sub-receiver is positioned on the ear when worn on the ear, and the
sub-microphone is connected to the sub-microphone plug Are electrically connected via the
secondary cord, and the secondary earphone microphone When the sub-earphone microphone
plug is inserted into the rack, the receiver and the sub-receiver are electrically connected in
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2
parallel to the earphone microphone plug, and the microphone and the sub-microphone are
electrically connected in parallel to the earphone microphone plug It may be configured to be
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention
will be described below with reference to FIGS. 1 and 2. FIG.
FIG. 1 is an electrical connection diagram of a first embodiment of an earphone microphone for a
portable telephone according to the present invention.
FIG. 2 is an external view of the earphone microphone for the mobile phone of FIG.
[0009]
First, in FIG. 2, the earphone microphone 20 of the present invention can be inserted into and
removed from the earphone microphone jack disposed in the housing of the mobile telephone 10
by the earphone microphone plug 22.
Then, the receiver 26 is disposed at the tip of the earphone microphone plug 22 via the cord 24,
and when the receiver 26 is worn on the ear, it is separated from the receiver 26 by the length L
so that the micro horn The arrangement of the cords 28 in the cord 24 is similar to that of a
conventional earphone microphone. However, in the present invention, the joint portion 32
provided with the secondary earphone microphone jack 30 is provided in the middle of the cord
24. Further, a sub receiver 38 is disposed at the tip of the sub earphone microphone plug 34
which can be inserted into and removed from the sub earphone microphone jack 30 via the sub
cord 36, and when the sub receiver 38 is attached to the ear, it becomes a mouth position. Thus,
the secondary microphone 40 is disposed on the secondary cord 36 so as to be separated from
the secondary receiver 38 by the length L. The structures of the secondary earphone microphone
plug 34, secondary cord 36, secondary receiver 38 and secondary microphone 40 are exactly the
same as those of the conventional earphone microphone.
[0010]
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3
In the electric circuit, as shown in FIG. 1, the receiver 26 and the auxiliary receiver 38 are
electrically connected in parallel to the earphone microphone plug 22 with the auxiliary
earphone microphone plug 34 inserted in the auxiliary earphone microphone jack 30, and a
microphone The sub microphone 28 and the sub microphone 40 are electrically connected in
parallel to the earphone microphone plug 22. Then, in a state in which the earphone microphone
plug 22 is inserted into the earphone microphone jack 12 of the mobile telephone 10, the sound
output from the mobile telephone 10 is amplified by the receiver 26 and the sub receiver 38 and
supplied to the microphone 28 and the sub microphone 40. Both voices are input to the mobile
phone 10.
[0011]
In such a configuration, two persons wearing the receiver 26 and the sub-receiver 38 in their
ears can simultaneously participate in conversation with one mobile phone 10. Therefore, unlike
the conventional earphone microphone, there is no need to hand over the receiver, which is
convenient for safe operation. Moreover, since two people can participate in the conversation at
the same time, the conversation is never lost. Then, even if the other party's mobile phone side of
the call includes the earphone microphone of the present invention, a plurality of parties can
simultaneously participate in the conversation even on the other side of the call.
[0012]
In the first embodiment, when talking alone, the sub-earphone microphone plug 34 may be
removed from the sub-earphone microphone jack 30, and the receiver 26 and the microphone
28 may talk. Also, by making the earphone microphone plug 22 and the secondary earphone
microphone plug 34 the same shape and size, the secondary earphone microphone plug 34 is
directly inserted into the earphone microphone jack 12 of the mobile phone 10, and the
secondary receiver 38 and the secondary microphone 40. You may talk using. Furthermore, a
plurality of connectors provided with 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 connector 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 the conversation simultaneously by being connected in a row. In addition, a
plurality of sub-earphone microphone jacks 30 may be provided on the cord 24, and a connector
including the sub-earphone microphone plug 34, the sub-receiver 38 and the sub-microphone 40
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4
may be appropriately connected to these, May be able to talk. Also, the secondary earphone
microphone jack 30 is not limited to one disposed in the middle of the cord 24 as in the above
embodiment, but may be disposed near the earphone microphone plug 22 or near the
microphone 28.
[0013]
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
portable telephone according to the present invention.
[0014]
In the second embodiment shown in FIG. 3, the first to third microphones 42, 44 and 44 are
electrically connected in parallel between the microphone signal terminal 22a of the earphone
microphone plug 22 and the ground terminal 22b. In addition, 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 53
are connected to three independent secondary coils. Each 54 is electrically connected.
[0015]
In such a configuration, since impedance matching is achieved by the matching transformer 48,
the first to third receivers 50, 52, 54 are efficiently driven, and the first to third receivers 50, 52,
54 are sufficient. A loud sound can be loudened. In the second embodiment shown in FIG. 3, the
matching transformer 48 acts as an impedance matching circuit, but matching may be performed
by another circuit. As a matter of course, as in the first embodiment, it is also possible to connect
and disconnect some receivers and microphones by using the sub earphone microphone jack 30
and the sub earphone microphone plug 34.
[0016]
Furthermore, a third embodiment of the present invention will be described with reference to
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5
FIG. 4 and FIG. FIG. 4 is an electrical connection diagram of a third embodiment of the earphone
microphone for a portable telephone 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.
[0017]
In the third embodiment shown in FIG. 4, the microphone signal terminals 22a of the earphone
microphone plug 22 are electrically connected to the first to third microphones 42, 44 and 46
connected in parallel via the microphone amplifier 56. Ru. Also, the receiver signal terminal 22 c
of the earphone microphone plug 22 is electrically connected to the first to third receivers 50,
52, 54 via the speaker amplifier 58. Then, as an example of the microphone amplifier 56, as
shown in FIG. 5, the signal corresponding to the sound given to the first to third microphones 42,
44 and 46 is appropriately amplified by the first transistor Tr1, and the amplified output is The
voice signal is output to the microphone signal terminal 22a of the earphone microphone plug
22 through the input voice adjusting means including the first variable resistor VR1. In one
example of the speaker amplifier 58, as shown in FIG. 6, an output signal applied to the receiver
signal terminal 22c of the earphone microphone plug 22 is appropriately amplified by the
second transistor Tr2, and the amplified output is amplified by the second variable resistor VR2.
The signal is supplied to the third transistor Tr3 via the output sound adjusting means, and
further amplified. The third transistor Tr3 uses a primary coil of the matching transformer 48 as
a load, and the first to third receivers 50, 52, 54 are electrically connected to the secondary coil,
respectively.
[0018]
By using amplification circuits such as the microphone amplifier 56 and the speaker amplifier
58, the volume of the first to third microphones 42, 44 and 46 applied to the mobile phone 10
can be appropriately adjusted. The output sound volume of can be adjusted appropriately and
the first to third receivers 50, 52, 54 can be used for loud sound.
[0019]
By the way, although not illustrated in the second embodiment and the third embodiment, as in
the first embodiment, the microphone of the microphone is formed by attaching the receiver and
the microphone pair to the same cord and attaching the receiver to the ear. Of course, it is
configured to be located in the mouth.
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Then, the cord in which the receiver and the microphone are disposed is formed as one from the
earphone microphone plug 22 halfway, and may be branched halfway, or may be branched from
or near the earphone microphone plug 22 good. Furthermore, the receiver and the microphone
may be disposed in pairs at an appropriate position of one unbranched cord. Also, although it is
desirable that the matching transformer 48 in the second embodiment and the microphone
amplifier 56 and the speaker amplifier 58 in the third embodiment be disposed near the
earphone microphone plug 22, even if they are disposed in the middle of the cord good. Then,
the drive voltage Vcc of the microphone amplifier 56 and the speaker amplifier 58 may be
supplied from any of the power supply devices provided with the mobile phone 10 or the vehicle
and the battery or the like appropriately provided. Then, only one of the microphone amplifier
56 and the speaker amplifier 58 may be used. Furthermore, it is not necessary to use any
amplification circuit. In this case, one earphone microphone plug 22 is electrically connected in
parallel to a plurality of receivers and microphones via a cord that branches into a plurality of
microphones, and when the receiver is worn on the ear, the paired microphones are positioned in
the mouth The structure is arranged to
[0020]
In addition, although the earphone microphone for the mobile telephone according to the present
invention is described as being used in the mobile telephone in the above description, it is easily
understood that the mobile telephone used in the description of the claims also includes PHS.
Will be done.
[0021]
As described above, since the earphone microphone for a portable telephone according to the
present invention is configured, the following special effects can be obtained.
[0022]
In the earphone microphone for mobile telephone according to claim 1, a plurality of speakers
can simultaneously participate in a conversation with one mobile telephone.
Moreover, it is hand-free, and is particularly convenient for talking with a plurality of speakers
including the driver.
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[0023]
Further, in the earphone microphone for a portable telephone according to claim 2, the same
effect as in claim 1 can be obtained, and the number of receivers and microphones to be paired
with this can be set appropriately according to the number of speakers. obtain.
[0024]
Then, in the earphone microphone for a mobile phone according to claim 3, a plurality of
receivers are connected, but signals are efficiently transmitted to the receivers, and loud sound
can be performed with a sufficient volume.
[0025]
Then, in the earphone microphone for a portable telephone according to claim 4 or 5, by using
the amplification circuit, the audio input given to the portable telephone from a plurality of
microphones or the audio output amplified from a plurality of receivers is appropriately made.
Can be of any size.
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