JP2007281916A - Earphone microphone - Google Patents

Earphone microphone Download PDF

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Publication number
JP2007281916A
JP2007281916A JP2006106076A JP2006106076A JP2007281916A JP 2007281916 A JP2007281916 A JP 2007281916A JP 2006106076 A JP2006106076 A JP 2006106076A JP 2006106076 A JP2006106076 A JP 2006106076A JP 2007281916 A JP2007281916 A JP 2007281916A
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Japan
Prior art keywords
earphone
audio signal
switch
earpiece
microphone
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JP2006106076A
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Japanese (ja)
Inventor
Ken Tsukada
憲 塚田
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Nittetsu Elex Co Ltd
株式会社日鉄エレックス
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Priority to JP2006106076A priority Critical patent/JP2007281916A/en
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Abstract

PROBLEM TO BE SOLVED: To provide an earphone microphone which can normally be heard with both ears, can switch to a transmission / reception function when necessary, can realize a clear call without being affected by external noise, and can be easily worn. .
An input / output terminal having a first audio signal output unit, a second audio signal output unit, and an audio signal input unit, and a first audio signal used by being attached to one ear. A first earphone 15 connected to the output unit 11, an earpiece 16 that is used by being attached to the other ear and that directly picks up sound transmitted by air propagation through the ear canal and a second earphone, and an earpiece 16. , A changeover switch 17 connected to either the audio signal input unit 13 or the second audio signal output unit 12 and a changeover control means 18 for controlling the changeover switch 17. Switching between playback and sending and receiving.
[Selection] Figure 1

Description

  The present invention relates to an earphone microphone that listens to voice and music, and transmits and receives speech.

  2. Description of the Related Art Conventionally, an earphone with a microphone that is used for a transmission / reception device such as a mobile phone and performs transmission and reception using an earphone attached to one ear and a microphone provided in an intermediate portion of a cable is used. . Users can use a microphone and earphones to send and receive without a mobile phone, but the microphone picks up surrounding sounds other than the transmitted voice, so it cannot be used in places with high external noise. There's a problem.

  Therefore, a transmitter / receiver (for example, refer to Patent Document 1) in which an earphone is inserted into one ear and a bone conduction microphone is inserted into the other ear, an earphone in one ear, a bone conduction microphone in the other ear, An air conduction microphone that collects sound propagating in the air is provided, and the output signals of the bone conduction microphone and the air conduction microphone are added at a predetermined mixing ratio according to the noise environment to output sound with less attenuation of the treble part. There has been proposed a handset (see, for example, Patent Document 2). In addition, in a mobile phone using a transmission / reception integrated earphone having a microphone function, an input terminal for receiving a reception signal from a high-frequency transmission / reception processing circuit unit of the mobile phone in a transmission / reception circuit unit that outputs a signal from the transmission / reception integrated earphone; An output terminal that outputs a transmission signal from the transmission / reception integrated earphone to the high-frequency transmission / reception processing circuit unit, and a cancellation circuit that generates a cancellation signal that cancels only the component of the reception signal included in the transmission signal in the transmission signal are provided. A method of electrically canceling howling in an integrated earphone has been proposed (see, for example, Patent Document 3).

  On the other hand, in recent years, mobile phones equipped with a music playback function and portable information terminals equipped with a music playback function and a communication function are sold, and stereo earphones with a microphone are used for these devices. Yes.

JP-A-8-181754 JP 2000-261534 A JP 2001-197191 A

  However, a stereo earphone with a microphone has a problem that it cannot be used in a place where there is a large amount of external noise because the microphone is provided in the middle of the cable. In the invention described in Patent Document 1, since the bone conduction microphone is inserted into the other ear, music cannot be heard with both ears after the call is finished. Further, in the invention described in Patent Document 2, since a plurality of microphones composed of bone conduction microphones and air conduction microphones are used, it is difficult to adjust the wearing and position and time is required. Since it is necessary to change the mixing ratio of each output signal, there is a problem in operability. Furthermore, in the invention described in Patent Document 3, since there is only one earphone, stereo sound cannot be heard. In addition, it is necessary to make the amplitude of the cancel signal the same as the amplitude of the received signal and make the phase opposite, but it is practically difficult to form such a cancel signal with a cancel circuit, and complete cancellation is difficult. There is a problem that the voice quality of the transmission and reception is lowered.

  Therefore, the problem to be solved by the present invention is that the voice can be usually heard with both ears, and when necessary, the transmission / reception function can be switched to realize a clear telephone call without being affected by external noise, and it is mounted. It is to provide an easy earphone microphone.

  In order to solve the above problems, the earphone microphone of the present invention is used by being attached to an input / output terminal having a first audio signal output unit, a second audio signal output unit, and an audio signal input unit, and one ear. A first earphone connected to the first audio signal output unit; an earpiece that is used by being attached to the other ear, and that is used as a microphone that directly picks up sound transmitted by air propagation through the ear canal and a second earphone; A change-over switch that connects the earpiece to either the audio signal input unit or the second audio signal output unit and a change-over control unit that controls the change-over switch are provided.

  The earphone microphone of the first invention is detachably attached to a portable information terminal such as a mobile phone or a PHS having a call function and a music playback function via an input / output terminal. At least the earpiece is worn with the entrance side of the ear canal closed. When each is a separate body, such as a conventional microphone or earphone, it is necessary to adjust the position of the earphone with respect to the ear and the position of the microphone with respect to the mouth, respectively. Since the second earphone is also used as a microphone for picking up sound in the ear canal, it is only necessary to attach the earpiece to the ear, and there is no need to individually adjust the position. When the earpiece is connected to the audio signal output unit by the switching control means, the earpiece can be used as the second earphone, and two-channel audio signals (for example, stereo audio signals) sent from the portable information terminal are used as the first and second earphones. Can be heard with both ears. Further, when the earpiece is connected to the audio signal input unit by operating the switching operation means, the earpiece can be used as a microphone, and the sound transmitted from the information portable terminal can be heard with one ear via the first earphone, It is possible to directly pick up the sound transmitted by the air propagation through the ear canal of the ear and send it to the portable information terminal.

  The switching control means is provided with a receiving switch, the input / output terminal is provided with a receiving switch connection section connected to the receiving switch, and the switching control means is turned on and the switching switch is switched to switch the earpiece to the voice signal input section. It is preferable to provide a reception function (off-hook function) for connecting to the telephone and an end-of-call function (on-hook function) for turning off the reception switch and switching the changeover switch to connect the earpiece to the second audio signal output unit. Normally, when an incoming signal is received from a portable information terminal while listening to stereo two-channel music, the earpiece is operated as a microphone by using the reception function, and a voice signal for reception is received by the first earphone as portable information. In addition to receiving from the terminal, a voice call signal can be transmitted to the portable information terminal using a microphone. Further, when the call by the receiving function is finished, if the earpiece is operated again as the second earphone by the call-ending function, a two-channel audio signal transmitted from the portable information terminal using the first and second earphones Can be heard with both ears.

  Depending on the function of the portable information terminal, it is possible to set whether the incoming signal is an audio signal or an automatic incoming signal. When the incoming signal from the portable information terminal is an audio signal, the incoming sound can be heard by one or both of the first and second earphones. In this case, a manual switch can be used as the changeover switch to activate the reception function and perform a call. At the end of the call, the end-of-call function is activated by operating the manual switch, the call can be ended, and music reproduction or the like can be performed.

  In addition, when the incoming signal from the portable information terminal is an automatic incoming signal, by configuring the switching control means so that the changeover switch performs automatic switching in conjunction with the incoming signal, the reception function is activated when an incoming call is received. Thus, it is possible to shift from the music playback state to the call state. In addition, when the other party disconnects the call, the call-ending function is activated, and it is possible to automatically shift from the call state to the music playback state.

  The earphone microphone of the second invention is attached to one ear, a receiver to which the first audio signal output unit and the second audio signal output unit are connected, a transmitter to which the audio signal input unit is connected, and the earphone microphone. The first earphone connected to the first audio signal output unit and the second earphone which is used by being attached to the other ear and directly picks up the sound transmitted through the external ear canal by air propagation are also used. An earpiece, a changeover switch that connects the earpiece to either the audio signal input unit or the second audio signal output unit, and a change control unit that controls the changeover switch are provided.

  For the receiver and the transmitter, for example, a short-range wireless communication technology such as weak wireless can be used. The earphone microphone of the present invention can perform wireless communication with a portable information terminal such as a mobile phone or a PHS having a call function, a music playback function, and a wireless communication function, and outputs an earpiece as an audio signal by a switching control means. The earpiece can be used as a second earphone, and a two-channel audio signal (for example, a stereo audio signal) wirelessly transmitted from the portable information terminal is received by the receiver, and the first and second earphones are connected. Can be heard with both ears. Further, when the earpiece is connected to the voice signal input unit by operating the switching operation means, the earpiece can be used as a microphone, and the voice transmitted wirelessly from the information portable terminal is received by the receiver, and is transmitted via the first earphone. The voice transmitted through the ear canal of the other ear by air propagation can be directly picked up and transmitted wirelessly from the transmitter to the wireless portable information terminal.

  The switch control means is provided with a reception switch, the transmitter is provided with a reception switch connection section connected to the reception switch, and the switch control means is turned on and the switch is switched to switch the earpiece to the voice signal input section. It is preferable to provide a reception function to be connected and an end function to turn off the reception switch and switch the changeover switch to connect the earpiece to the second audio signal output unit.

  Normally, when an incoming signal is received from a portable information terminal while listening to stereo two-channel music, the earpiece is operated as a microphone by using the reception function, and a voice signal for reception is received by the first earphone as portable information. In addition to receiving from the terminal via the receiver, a call can be made by transmitting a voice signal for transmission with a microphone to the portable information terminal via the transmitter. Further, when the call by the receiving function is finished, if the earpiece is operated again as the second earphone by the call-ending function, a two-channel audio signal transmitted from the portable information terminal using the first and second earphones Can be heard with both ears.

  When the incoming signal from the portable information terminal is an automatic incoming signal, an automatic incoming signal receiving unit is provided in the receiver, and the switching control means is configured so that the changeover switch performs automatic switching in conjunction with the incoming signal. When the incoming call is received, the reception function is activated, and the music reproduction state can be automatically switched to the call state. In addition, when the other party disconnects the call, the call-ending function is activated, and it is possible to automatically shift from the call state to the music playback state.

  The earpiece and the first earphone are provided with a diaphragm and an electromagnetic conversion coil, and a switching control means is provided between the changeover switch and the audio signal input unit to amplify an electric signal from the earpiece to a predetermined output and to generate an audio signal When connected to the microphone amplifier to be sent to the input unit and the power supply unit that drives them, when using the earpiece as a microphone, the audio signal input from the microphone of one ear is amplified by the microphone amplifier and the audio signal input To the portable information terminal via the unit. When the earpiece is connected to the second audio signal output unit and used as the second earphone, it is sent from the portable information terminal to the first and second earphones via the first and second audio signal output units. Two-channel audio signals can be heard with both ears.

  When a battery is provided in the power supply unit, an amplifier, a switching control unit, and the like are driven by electric power supplied from the battery. For example, a replaceable primary battery or secondary battery can be used as the battery, and a built-in battery that can be directly charged without being removed can also be used.

The present invention has the following effects.
(1) An input / output terminal, a first earphone attached to one ear and used, an earpiece attached to one ear and used as a microphone and a second earphone, Since it has a changeover switch connected to either the signal input unit or the second audio signal output unit and a changeover control means for controlling the changeover switch, two-channel audio signals such as music can be heard with both ears. By switching the second earphone to the microphone from the listening state, it is possible to receive with one ear and transmit with the other ear. Since the earpiece serves as both the microphone and the second earphone, the position adjustment of the second earphone and the position adjustment of the microphone are completed at the same time by attaching the earpiece, and both the first earphone and the earpiece are used. You can listen to two-channel audio, etc., and talk while the entrance side of the ear canal is closed, so you can control the effects of external noise and listen to audio with both ears. Can switch between the state of making a call and receiving a call, and it is easy to wear and clear transmission and reception can be realized.
(2) The switch control means is provided with a reception switch, the input / output terminal is provided with a reception switch connection section, and the switch control means is turned on and the switch is switched to connect the earpiece to the audio signal input section. If the reception function is turned off and the reception switch is turned off and the change-over switch is changed to provide an end-of-call function for connecting the earpiece to the second audio signal output unit, the reception switch is turned on / off and the changeover switch is changed. The operation can be interlocked, and the operability can be improved.
(3) A receiver, a transmitter, a first earphone that is used by being attached to one ear, an earpiece that is used by being attached to one ear and is used as a microphone and a second earphone, and an earpiece Are connected to either the audio signal input unit or the second audio signal output unit, and the switching control means for controlling the changeover switch, so that the second earphone can be attached by mounting the earpiece. The position adjustment of the microphone and the position adjustment of the microphone are completed at the same time. Also, the first earphone and the earpiece block the entrance side of the ear canal of both ears, and listen to 2-channel audio, etc. Therefore, it is possible to suppress the influence of external noise and switch between listening with both ears and calling and receiving with both ears. Is easy, it is possible to realize a clear transmission and reception. In addition, the wireless connection eliminates the need for a cable to and from the portable information terminal, so there is no need to hook the cable when moving around, and music can be played with the portable information terminal in a bag or pocket. You can listen and talk.
(4) The switch control means is provided with a reception switch, the transmitter is provided with a reception switch connection section, and the switch control means is turned on and the switch is switched to connect the earpiece to the audio signal input section. When a reception function and an end-of-call function for connecting the earpiece to the second audio signal output unit by turning off the reception switch and switching the changeover switch are provided, the reception switch is turned on and off, and the changeover switch is switched. Can be linked to each other, and the operability can be improved.
(5) When the diaphragm and the electromagnetic conversion coil are provided in the earpiece and the first earphone, and the switching control means is connected to the microphone amplifier and the power supply unit, the sound input from the earpiece can be amplified by the microphone amplifier. Therefore, clear transmission and reception can be realized.
(6) When a battery is provided in the power supply unit, the amplifier and the switching control means are driven by the power supplied from the battery. Therefore, the power consumption of the portable information terminal is reduced, and continuous use for a long time. Can do.

Hereinafter, embodiments of the present invention will be described.
(First embodiment)
FIG. 1 is a block diagram of an earphone microphone according to a first embodiment of the present invention. As shown in FIG. 1, the earphone microphone 10 according to the first embodiment of the present invention has an input / output terminal having a first audio signal output unit 11, a second audio signal output unit 12, and an audio signal input unit 13. 14, the first earphone 15 that is used by being attached to one ear and connected to the first audio signal output unit 11, and the sound that is used by being attached to the other ear and is transmitted through the ear canal by air propagation. Controls an earpiece 16 that serves as both a microphone and a second earphone that are directly picked up, a changeover switch 17 that connects the earpiece 16 to either the audio signal input unit 13 or the second audio signal output unit 12, and the changeover switch 17 Switching control means 18 for switching.

  The input / output terminal 14 includes reception switch connection portions 19 and 20, and the switching control means 18 includes a reception switch 21. The switching control means 18 is connected to a microphone amplifier 22 that is provided between the changeover switch 17 and the audio signal input unit 13 and amplifies the electrical signal from the earpiece 16 to a predetermined output and sends the amplified signal to the audio signal input unit 13. ing. The power supply unit 23 is connected to the microphone amplifier 22 and the switching control means 18 and supplies power thereto. The power supply unit 23 includes a detachable battery (not shown), and the amplification unit 24 is configured by the microphone amplifier 22 and the power supply unit 23. Note that a rechargeable secondary battery can be used as the battery, or a fixed secondary battery may be used.

  The changeover switch 17 and the reception switch 21 are provided in the analog switch circuit unit 25. The analog switch circuit unit 25 includes circuits and wiring such as an analog switch element and a flip-flop circuit (not shown), and the input signal from the switch signal input unit 26 switches the changeover switch 17 and turns on the reception switch 21. Off can be done. The switching control means 18 includes an analog switch circuit unit 25 and a switch signal input unit 26.

  FIG. 2 is an explanatory diagram illustrating a usage state of the earphone microphone according to the first embodiment of this invention. As shown in FIG. 2, the input / output terminal 14 of the earphone microphone 10 is connected to, for example, a mobile phone 28 having a music stereo reproduction function. The mobile phone 28 includes a microphone 50 and an earphone 51, and is used as a single phone when the earphone microphone 10 is not used.

  The input / output terminal 14, the amplifying unit 24, and the switching control means 18 of the earphone microphone 10 are provided in the storage cases 29 to 31, respectively, and are connected to signal lines in the flexible connection cables 32 and 33.

  The connection cable 32 is connected to the base side of the switching control means 18, and the connection cables 34 and 35 are connected to the front side of the switching control means 18. The connection cables 34 and 35 have base ends integrally connected to the switching control means 18, branch at an intermediate portion, and have tips connected to the first earphone 15 and the earpiece 16, respectively.

  The switching control means 18 includes a push button switch 36 that generates an input signal, and the push button switch 36 can be pushed from the outside of the storage case 31.

  The earphone microphone 10 is used by inserting the first earphone 15 and the earpiece 16 into the left and right ears, respectively. At this time, it is preferable to arrange the push button switch 36 of the switching control means 18 at a position where it can be operated on the front side of the chest or abdomen. Since the storage case 30 in which the switching control means 18 is stored is lightweight, it can be used with the connection cables 32, 34, 35 hanging.

  The storage case 30 in which the amplifying unit 24 is stored can be stored together with the mobile phone 28 in a bag or the like or in a pocket. Further, the storage case 30 may be provided with a hook portion so as to be hooked on a user's pocket or belt.

  FIG. 3 is a cross-sectional view of the earpiece of the earphone microphone according to the first embodiment of the present invention, and FIG. 4 is a conceptual diagram showing a usage state of the earpiece of the earphone microphone. As shown in FIGS. 3 and 4, the earpiece 16 is inserted into the ear canal from the outside of the ear shell side, and an ear hole insertion portion 43 in which a through hole 42 communicating with the ear canal is formed in the center portion. A main body case 45 having a space 44 connected to the base end and communicating with the through hole 42 is provided. In the space 44, there are provided a diaphragm 46 and an electromagnetic conversion coil 47 capable of mutually converting mechanical vibration of the diaphragm 46 and an electric signal. Further, an ear pad 48 that is in close contact with the inner surface of the ear canal is attached to the outer periphery of the distal end portion of the ear canal insertion portion 43, and the distal end of the signal line in the connection cable 35 that is conductively connected to the electromagnetic conversion coil 47 is attached to the main body case 45. A drawer portion 49 is provided to pull the portion out. The earpiece 16 serves as both a microphone and a second earphone by a single sound transducer including the diaphragm 46 and the electromagnetic conversion coil 47.

  When the earpiece 16 is used as a microphone, sound transmitted by air propagation in the ear canal enters the space 44 through the through hole 42 from the inner ear side. The diaphragm 46 vibrates by capturing sound vibration (air vibration) that has entered the space 44. The electromagnetic conversion coil 47 captures mechanical vibration of the diaphragm 46 and converts it into an electrical signal and outputs it from the connection cable 35. Since the ear pad 48 is in close contact with the inner surface of the ear canal, the external noise on the ear shell side does not directly enter the ear canal and can be suppressed to a relatively low level relative to the sound transmitted through the ear canal. 46 can preferentially detect voice vibration. In addition, since the earpiece 16 and the first earphone 15 used as a microphone are arranged in a state of being sealed in the left and right ears respectively, the sound output from the first earphone 15 becomes difficult to be input to the earpiece 16. Howling hardly occurs.

  When the earpiece 16 is used as an earphone, an audio signal input from a signal line in the connection cable 35 vibrates the diaphragm 46 via the electromagnetic conversion coil 47 and generates air vibration in the space 44. This air vibration is sent out as sound from the space 44 through the through hole 42 to the inner ear side of the ear canal. At this time, since the ear pad 48 is in close contact with the inner surface of the ear canal, the external noise on the ear shell side does not enter the ear canal and can efficiently transmit sound to the eardrum on the inner ear side. In addition, since the sound transmitted through the ear canal does not leak to the outside, for example, even when listening to music at a high volume in a quiet place, there is no discomfort to others.

  The structure of the first earphone 15 is the same as that of the earpiece 16, and the operation thereof is the same as that when the earpiece 16 is used as an earphone, and thus the description thereof is omitted.

  Next, a method for using the earphone microphone 10 according to the first embodiment of the present invention will be described. First, the input / output terminal 14 is inserted into the connection terminal of the mobile phone 28, and the first earphone 15 is attached to one ear and the earpiece 16 is attached to the other ear. Depending on the function of the cellular phone 28, the operation of the microphone 50 and the earphone 51 of the cellular phone 28 is automatically or manually stopped, and the audio signal output to the first and second audio signal output units 11 and 12 and the audio The audio signal input from the signal input unit 13 is validated. The power supply unit 23 supplies power to the microphone amplifier 22 and the analog switch circuit unit 25. The reception switch 21 is off in the initial state. In the initial state, the changeover switch 17 connects the earpiece 16 and the audio signal output unit 12 side, and the earpiece 16 operates as a second earphone.

  In this state, when the mobile phone 28 is operated to perform music playback, the mobile phone 28 outputs 2-channel audio signals to the first and second audio signal output units 11 and 12. One audio signal is transmitted from the first audio signal output unit 11 to the first earphone 15 attached to one ear via signal lines in the connection cables 33, 32, and 34. The other audio signal is transmitted from the second audio signal output unit 12 to the earpiece 16 attached to the other ear via the signal line in the connection cables 33 and 32, the changeover switch 17 and the signal line in the connection cable 35. The The user can listen to music in stereo from the first earphone 15 and the earpiece 16.

(Receiving function)
When there is an incoming call to the mobile phone 28, a ring tone flows from the mobile phone 28 to one or both of the first earphone 15 and the earpiece 16. When the user presses the push button switch 36, the reception function is activated. That is, an input signal is input from the switch signal input unit 26 to the analog switch circuit unit 25, the reception switch 21 is turned on, the changeover switch 17 is switched, and the earpiece 16 is disconnected from the second audio signal output unit 12. The audio signal input unit 13 is connected. In this state, the earpiece 16 operates as a microphone.

  The cellular phone 28 detects the connection of the reception switch 21 and switches from the music playback state to the call state. That is, the mobile phone 28 is connected to the base station and further to the exchange station by the communication control sequence provided to the mobile phone 28, and the voice signal output unit 13 can input the voice signal to be transmitted from the voice signal input unit 13 to the mobile phone 28. 11 can output the received voice signal. The received voice signal output from the mobile phone 28 to the audio signal output unit 11 is a first audio signal that is attached to one ear from the first audio signal output unit 11 via signal lines in the connection cables 33, 32, 34. It is transmitted to the earphone 15. Further, the transmitted voice uttered by the user is converted into an audio signal by the earpiece 16 and transmitted to the microphone amplifier 22 via the signal line in the connection cable 35, the changeover switch 17 and the signal line in the connection cable 32. The Then, the signal is amplified by the microphone amplifier 22 and transmitted to the mobile phone 28 via the signal line in the connection cable 33 and the audio signal input unit 13. Since the level of the external noise included in the audio signal transmitted to the microphone amplifier 22 is very small, the audio input from the ear canal is efficiently amplified even when the volume is low. As described above, the user can receive a call with the first earphone 15 attached to one ear and can transmit a voice from the earpiece 16 attached to the other ear.

(Ending call function)
When the call by the mobile phone 28 is finished, when the user presses the push button switch 36 again, the call ending function becomes effective. That is, the end signal is input from the switch signal input unit 26 to the analog switch circuit unit 25, the reception switch 21 is turned off, the changeover switch 17 is switched, the earpiece 16 is disconnected from the audio signal input unit 13, and the audio signal input unit 13 is disconnected. Connected to the signal output unit 12. In this state, the earpiece 16 operates as a second earphone as in the initial state.

  The user can listen to the music in stereo from the first earphone 15 and the earpiece 16 using the music playback function of the mobile phone 28 as in the initial state.

  If the mobile phone 28 has an automatic incoming call function, a reception switch is built in the mobile phone 28. In this case, it is also possible to provide the earphone microphone 10 with an automatic incoming call wiring for inputting an incoming call signal and an end call signal from the mobile phone 28 to the analog switch circuit unit 25 via the switch signal input unit 26.

  When the automatic incoming call function of the mobile phone 28 is enabled, the reception switch 21 is disabled and the reception switch built in the mobile phone 28 is turned on. When there is an incoming call to the mobile phone 28, the incoming signal from the mobile phone 28 is input to the analog switch circuit unit 25, and the changeover switch 17 disconnects the earpiece 16 from the second audio signal output unit 12, and the audio signal Connect to the input unit 13. In addition, the mobile phone 28 is switched from the music playback state to the telephone conversation state, the transmission voice signal can be input from the voice signal input unit 13, and the reception voice signal can be output to the voice signal output unit 11. The user can automatically shift to a call state without pressing the push button switch 36.

  In addition, when the automatic incoming call function is valid, the mobile phone 28 automatically disconnects the communication when the other party of the call disconnects the communication. At this time, the end signal from the mobile phone 28 is input to the analog switch circuit unit 25, and the changeover switch 17 disconnects the earpiece 16 from the audio signal input unit 13 and connects it to the second audio signal output unit 12. The user can listen to music in stereo from the first earphone 15 and the earpiece 16 without pressing the push button switch 36 after the end of the call.

(Second Embodiment)
FIG. 5 is a block diagram of the earphone microphone according to the second embodiment of the present invention, and FIG. 6 is an explanatory diagram showing a usage state of the earphone microphone. As shown in FIGS. 5 and 6, the earphone microphone 37 of the second embodiment uses a receiver 38 and a transmitter 39 instead of the input / output terminal 14 of the earphone microphone 10 of the first embodiment. However, since the structure of other parts is the same as that of the earphone microphone 10, the same number is assigned to the same configuration, and the description is omitted.

  The receiver 38 is connected to the first audio signal output unit and the second audio signal output unit 12, and the transmitter 39 is connected to the audio signal input unit 13 and the reception switch connection units 19 and 20. The receiver 38 and the transmitter 39 constitute a transmission / reception unit 40, and the power supply of the transmission / reception unit 40 is supplied from the power supply unit 23. In addition, the receiver 38 includes an automatic incoming signal reception unit (not shown), and the automatic incoming signal reception unit is connected to the switch signal input unit 26. When the output of the microphone is sufficiently large, the microphone amplifier 22 can be omitted.

  The amplification unit 24 and the transmission / reception unit 40 are integrally stored in the storage case 52. The mobile phone 41 has a built-in wireless communication function using weak radio, and the earphone microphone 37 can perform wireless communication with the mobile phone 41 via the transmission / reception unit 40.

  The changeover switch 17 connects the earpiece 16 to either the receiver 38 or the microphone amplifier 22. In the initial state, the changeover switch 17 connects the earpiece 16 and the receiver 38, and the earpiece 16 operates as a second earphone.

  When the earpiece 16 is operating as the second earphone, the receiving unit 38 receives a two-channel audio signal from the mobile phone 41 and outputs the audio signal to the first earphone 15 and the earpiece 16 respectively. Can listen to stereo music and the like from the first earphone 15 and the earpiece 16.

  When the earpiece 16 is connected to the microphone amplifier 22, the earpiece operates as a microphone. When the earpiece 16 is operating as a microphone, the audio signal input from the microphone 16 is amplified by the microphone amplifier 22 via the changeover switch 17 and transmitted from the transmission unit 39 to the mobile phone 41. Also, the audio signal transmitted from the mobile phone 41 is received by the receiving unit 38 and sent to the first earphone 15. The user can listen to the received voice with the first earphone 15 and can send the transmitted voice from the earpiece 16.

(Other embodiments)
FIGS. 7A and 7B are explanatory views showing the usage state of the earphone microphone according to another embodiment of the present invention. Earphone microphones 64 and 65 shown in FIGS. 7A and 7B are obtained by partially changing the configuration of the earphone microphone 10 according to the first embodiment. In the earphone microphone 64 shown in FIG. 7A, the input / output terminal 14 and the amplifying unit 24 are integrally stored in a storage case 59 and a long connection cable 60 is used in place of the connection cable 32. 30 and the connection cable 33 are omitted. Since the mobile phone 28 and the amplifier 24, which are heavy in weight, can be integrally connected and managed, handling during movement becomes easy.

  In addition, the earphone microphone 65 shown in FIG. 7B houses the amplification unit 24 and the switching control means 18 in the storage case 61, and uses long connection cables 62 and 63 instead of the connection cables 34 and 35. The storage cases 30 and 31 and the connection cable 32 are omitted. If the storage case 61 is provided with a hook portion, it can be used by being hooked on a user's pocket or belt. Alternatively, the storage cases 30 and 31 may be provided with hooking portions that can be engaged with each other, and the storage cases 30 and 31 may be combined to form the storage case 61.

  It is also possible to omit the input / output terminal 14 and the connection cable 33 and provide the transmission / reception unit 40 in the storage case 61. By configuring in this way, the configuration of the apparatus can be simplified and wireless communication can be performed.

  FIG. 8A is a block diagram of an earphone microphone according to another embodiment, and FIG. 8B is an explanatory diagram showing a usage state of the earphone microphone. The earphone microphone 65a according to another embodiment is obtained by omitting the amplification unit 24 of the earphone microphone 10 according to the first embodiment. If the microphone amplifier 22 of the first embodiment is built in the mobile phone 28, or if the microphone amplifier built in the mobile phone 28 can amplify up to a predetermined output by itself, it is amplified. The part 24 becomes unnecessary. When the amplifying unit 24 is not required, the storage case 30 for storing the amplifier 24 is also unnecessary, so that the connection cables 32 and 33 and the storage case 30 are omitted, and a longer connection cable 66a is used, thereby further simplifying the configuration. Thus, the weight of the device can be reduced. A power supply line for supplying power from the mobile phone 28 to the switching control means 18 is provided in the connection cable 66a.

  FIG. 9 is a cross-sectional view of a first earphone and an earpiece of an earphone microphone according to another embodiment.

  The first earphone 67 (earpiece 68) of FIG. 9 is used in place of the earphone microphone 10 of the first embodiment or the first earphone 15 or the earpiece 16 of the earphone microphone 37 of the second embodiment. Can do. The first earphone 67 has a vent hole 69 that allows the outside and the ear canal to communicate with each other so as to be openable and closable when attached to the ear canal. That is, the first earphone 67 includes a main body case 72 having a diaphragm 70 and an electromagnetic conversion coil 71 therein, an ear canal insertion part 73 connected to the main body case 72 and inserted into the ear canal, and an ear hole insertion part. And a through-hole 74 that communicates between the diaphragm 70 and the ear canal, and a ring-shaped cover member 75 that is rotatably provided in close contact with the outer peripheral surface of the main body case 72. Concentric communication holes 76 and 77 penetrating in the radial direction are formed in the outer peripheral portion of the main body case 72 and the cover member 75, respectively, and the cover member 75 is rotated in the circumferential direction to center the communication holes 76 and 77. When the positions are adjusted, the air holes 69 are opened. Further, when the cover member 75 is rotated in the circumferential direction to shift the positions of the communication holes 76 and 77, the vent hole 69 is closed.

  Further, an ear pad 78 for improving the contact state with the inner surface of the ear canal is attached to the outer periphery of the distal end portion of the ear canal insertion portion 73, and the main body case 72 is connected to the electromagnetic conversion coil 71 in the connection cable 35. A lead-out portion 79 is provided to pull out the distal end portion of the signal line to the outside. Further, a protrusion 80 is formed on the outer peripheral portion of the main body case 72 to prevent the cover member 75 from being pulled out and restricts the rotation direction, and the protrusion 80 is slidably inserted into the inner peripheral portion of the cover member 75. The groove portion 81 is formed. The cover member 75 can be rotated with the first earphone 67 attached to the ear.

  When the earpiece 68 is used as the second earphone, when music is played back with one or both of the first earphone 67 and the earpiece 68 having the air holes 69 opened, external sound is generated from the air holes 69 and the through holes 74. Because it is introduced to the external auditory canal via the, you can hear the surrounding sounds while listening to music. Further, in a place where the external noise is large, the external noise can be blocked by playing music with the vent 69 closed.

  When the earpiece 68 is used as a microphone, external noise can be blocked by closing the vent hole 69 of the earpiece 68, so that clear transmission can be performed.

  In the earphone microphone according to the embodiment of the present invention, an example is provided in which the earphone and the sound transducer are inserted into the ear canal and attached, and the ear pad is closely attached to the inside of the ear canal to block external noise and a vent hole is provided. However, even if it is a structure that is inserted into the ear shell and does not have an ear pad that is in close contact with the ear canal, external noise on the ear shell side can be transmitted through the ear canal. The effect of the present invention can be obtained as long as the structure is suppressed to a relatively low level with respect to the sound and has a certain noise suppression effect.

  It is also possible to provide a high-pass filter on the input side of the microphone amplifier so as to reduce the low frequency range relative to the high frequency range of the audio input signal input from the microphone. With this configuration, an output signal close to natural voice can be transmitted to the mobile phone 28.

  The present invention can be used for an earphone microphone of a mobile phone, and can be used for other communication devices having a voice reproduction function and a call function.

Block diagram of the earphone microphone according to the first embodiment of the present invention Explanatory drawing which shows the use state of the same earphone microphone Cross-sectional view of the earpiece of the same earphone microphone The conceptual diagram which shows the use condition of the earpiece of the same earphone microphone Block diagram of an earphone microphone according to a second embodiment of the present invention Explanatory drawing which shows the use state of the same earphone microphone (A), (B) is explanatory drawing which shows the use condition of the earphone microphone of other embodiment of this invention. (A) is a block diagram of an earphone microphone according to another embodiment, (B) is an explanatory diagram showing a use state of the earphone microphone Sectional drawing of the 1st earphone and earpiece of the earphone microphone of other embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Earphone microphone 11 1st audio | voice signal output part 12 2nd audio | voice signal output part 13 Audio | voice signal input part 14 Input / output terminal 15 1st earphone 16 Earpiece (microphone, 2nd earphone)
17 switch 18 switching control means 19, 20 receiving switch connection unit 21 receiving switch 22 microphone amplifier 23 power supply unit 24 amplification unit 25 analog switch circuit unit 26 switch signal input unit 28 mobile phone 29-31 storage case 32, 33 connection cable 34, 35 Connection cable 36 Push button switch 37 Earphone microphone 38 Receiver 39 Transmitter 40 Transmitter / receiver 41 Mobile phone 42 Through hole 43 Ear hole insertion part 44 Space part 45 Body case 46 Diaphragm 47 Electromagnetic coil 48 Ear pad 49 Lead part 50 Microphone 51 Earphone 52 Storage case 59 Storage case 60 Connection cable 61 Storage case 62, 63 Connection cable 64 Earphone microphone 65 Earphone microphone 65a Earphone microphone 66a Connection cable 67 First earphone 68 A Yape 69 Ventilation hole 70 Diaphragm 71 Electromagnetic conversion coil 72 Main body case 73 Ear hole insertion part 74 Through hole 75 Cover member 76 Communication hole 77 Communication hole 78 Ear pad 79 Drawer part 80 Projection 81 Groove part

Claims (6)

  1. An input / output terminal having a first audio signal output unit, a second audio signal output unit, and an audio signal input unit;
    A first earphone that is used by being worn on one ear and connected to the first audio signal output unit;
    An earpiece used both as a second earphone and a microphone that is directly attached to the other ear and that directly picks up sound transmitted through the ear canal by air propagation;
    A changeover switch for connecting the earpiece to either the audio signal input unit or the second audio signal output unit;
    An earphone microphone comprising switching control means for controlling the switch.
  2. The switching control means includes a receiving switch, and the input / output terminal includes a receiving switch connecting portion connected to the receiving switch, and the switching control means turns on the receiving switch and switches the switching switch to switch the switching switch. A receiving function for connecting an earpiece to the audio signal input unit; and an end-calling function for turning off the receiving switch and switching the changeover switch to connect the earpiece to the second audio signal output unit. The earphone microphone according to claim 1.
  3. A receiver to which the first audio signal output unit and the second audio signal output unit are connected;
    A transmitter to which an audio signal input unit is connected;
    A first earphone that is used by being worn on one ear and connected to the first audio signal output unit;
    An earpiece used both as a second earphone and a microphone that is directly attached to the other ear and that directly picks up sound transmitted through the ear canal by air propagation;
    A changeover switch for connecting the earpiece to either the audio signal input unit or the second audio signal output unit;
    An earphone microphone comprising switching control means for controlling the switch.
  4. The switching control means includes a receiving switch, and the transmitter includes a receiving switch connection unit connected to the receiving switch, and the switching control means turns on the receiving switch and switches the switching switch to switch the earpiece. A voice receiving function for connecting the earpiece to the second voice signal output unit by turning off the voice receiving switch and switching the changeover switch. The earphone microphone according to claim 3, wherein:
  5. The earpiece and the first earphone include a diaphragm and an electromagnetic conversion coil, and the switching control unit is provided between the changeover switch and the audio signal input unit and outputs an electrical signal from the earpiece. The earphone microphone according to any one of claims 1 to 4, wherein the earphone microphone is connected to a microphone amplifier that amplifies the signal to the audio signal input unit and a power supply unit that drives the amplifier.
  6. The earphone microphone according to claim 5, wherein the power supply unit includes a battery.
JP2006106076A 2006-04-07 2006-04-07 Earphone microphone Pending JP2007281916A (en)

Priority Applications (1)

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JP2010050695A (en) * 2008-08-21 2010-03-04 Nittetsu Elex Co Ltd Communication system
JP2010147982A (en) * 2008-12-22 2010-07-01 Hosiden Corp Stereo earphone microphone with remote control
JP2010157814A (en) * 2008-12-26 2010-07-15 Yamaha Corp Earphone structure, insert member, and earphone
EP2217005A1 (en) 2009-02-06 2010-08-11 Sony Corporation Signal processing device, signal processing method and program
EP2362677A2 (en) 2010-02-24 2011-08-31 Yamaha Corporation Earphone microphone
US8331604B2 (en) 2009-06-12 2012-12-11 Kabushiki Kaisha Toshiba Electro-acoustic conversion apparatus
CN102972043A (en) * 2010-04-19 2013-03-13 申斗湜 Ear microphone
CN103052004A (en) * 2012-11-22 2013-04-17 北京小米科技有限责任公司 Signal receiving device, earphone and conversion joint
CN104038860A (en) * 2014-07-01 2014-09-10 深圳智我科技有限公司 Non-removable close-distance voice listening method and headset
JP2015515206A (en) * 2012-03-29 2015-05-21 ヘボラHaebora Wired earset with in-ear microphone
JP2017028732A (en) * 2016-09-23 2017-02-02 株式会社ファインウェル Hearing device
US9980024B2 (en) 2011-02-25 2018-05-22 Rohm Co., Ltd. Hearing system and finger ring for the hearing system
US10013862B2 (en) 2014-08-20 2018-07-03 Rohm Co., Ltd. Watching system, watching detection device, and watching notification device
US10075574B2 (en) 2013-08-23 2018-09-11 Rohm Co., Ltd. Mobile telephone
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US10103766B2 (en) 2013-10-24 2018-10-16 Rohm Co., Ltd. Wristband-type handset and wristband-type alerting device
US10158947B2 (en) 2012-01-20 2018-12-18 Rohm Co., Ltd. Mobile telephone utilizing cartilage conduction
US10356231B2 (en) 2014-12-18 2019-07-16 Finewell Co., Ltd. Cartilage conduction hearing device using an electromagnetic vibration unit, and electromagnetic vibration unit
WO2019157698A1 (en) * 2018-02-14 2019-08-22 深圳市汇顶科技股份有限公司 Detection circuit and method
US10779075B2 (en) 2010-12-27 2020-09-15 Finewell Co., Ltd. Incoming/outgoing-talk unit and incoming-talk unit
US10778824B2 (en) 2016-01-19 2020-09-15 Finewell Co., Ltd. Pen-type handset
US10795321B2 (en) 2015-09-16 2020-10-06 Finewell Co., Ltd. Wrist watch with hearing function

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JP2010050695A (en) * 2008-08-21 2010-03-04 Nittetsu Elex Co Ltd Communication system
JP2010147982A (en) * 2008-12-22 2010-07-01 Hosiden Corp Stereo earphone microphone with remote control
JP2010157814A (en) * 2008-12-26 2010-07-15 Yamaha Corp Earphone structure, insert member, and earphone
EP2217005A1 (en) 2009-02-06 2010-08-11 Sony Corporation Signal processing device, signal processing method and program
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CN102972043B (en) * 2010-04-19 2015-11-25 海宝拉株式会社 Headset
CN102972043A (en) * 2010-04-19 2013-03-13 申斗湜 Ear microphone
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US9980024B2 (en) 2011-02-25 2018-05-22 Rohm Co., Ltd. Hearing system and finger ring for the hearing system
US10158947B2 (en) 2012-01-20 2018-12-18 Rohm Co., Ltd. Mobile telephone utilizing cartilage conduction
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JP2015515206A (en) * 2012-03-29 2015-05-21 ヘボラHaebora Wired earset with in-ear microphone
US10506343B2 (en) 2012-06-29 2019-12-10 Finewell Co., Ltd. Earphone having vibration conductor which conducts vibration, and stereo earphone including the same
CN103052004A (en) * 2012-11-22 2013-04-17 北京小米科技有限责任公司 Signal receiving device, earphone and conversion joint
US10075574B2 (en) 2013-08-23 2018-09-11 Rohm Co., Ltd. Mobile telephone
US10237382B2 (en) 2013-08-23 2019-03-19 Finewell Co., Ltd. Mobile telephone
US10103766B2 (en) 2013-10-24 2018-10-16 Rohm Co., Ltd. Wristband-type handset and wristband-type alerting device
CN104038860A (en) * 2014-07-01 2014-09-10 深圳智我科技有限公司 Non-removable close-distance voice listening method and headset
US10380864B2 (en) 2014-08-20 2019-08-13 Finewell Co., Ltd. Watching system, watching detection device, and watching notification device
US10013862B2 (en) 2014-08-20 2018-07-03 Rohm Co., Ltd. Watching system, watching detection device, and watching notification device
US10356231B2 (en) 2014-12-18 2019-07-16 Finewell Co., Ltd. Cartilage conduction hearing device using an electromagnetic vibration unit, and electromagnetic vibration unit
US10795321B2 (en) 2015-09-16 2020-10-06 Finewell Co., Ltd. Wrist watch with hearing function
US10778824B2 (en) 2016-01-19 2020-09-15 Finewell Co., Ltd. Pen-type handset
JP2017028732A (en) * 2016-09-23 2017-02-02 株式会社ファインウェル Hearing device
WO2019157698A1 (en) * 2018-02-14 2019-08-22 深圳市汇顶科技股份有限公司 Detection circuit and method

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