KR101744507B1

KR101744507B1 - Bluetooth earset with ear canal microphone

Info

Publication number: KR101744507B1
Application number: KR1020150127890A
Authority: KR
Inventors: 김희윤
Original assignee: 주식회사 사운드브릿지
Priority date: 2015-09-09
Filing date: 2015-09-09
Publication date: 2017-06-09
Also published as: KR20170030375A

Abstract

The present invention relates to a Bluetooth earphone 100 having a built-in microphone, which is protruded to output a sound reproduced from a sound signal received by a Bluetooth wireless communication to a user's ear, and a hollow coupling part is formed to be inserted into a user's ear A housing (10) including an output section A microphone insertion portion 23a opened frontward to insert an earphone microphone 21 for receiving a voice of the user's ear and converting it into an electric signal and a microphone insertion portion 23a opened frontward and rearward to reproduce sound according to the electric signal received backward And a receiver insertion portion 23b formed with a hollow partition wall for receiving the output of the receiver 22 and opening the front sound output portion of the receiver 22 to transmit sound to the user's ear. A microphone / receiver receiver 20 including a module 22; An external sound receiver (30) including at least one external microphone for receiving an external sound and converting it into an electric signal, and reproducing the sound from the receiver and outputting the sound; And a driving control unit (40) for controlling the Bluetooth wireless communication and controlling transmission, reception and reproduction of acoustic signals and driving of the constituent parts thereof. The driving control unit (40) A Bluetooth communication mode for transmitting / receiving a signal and performing a voice call through the user terminal, and a hearing mode for amplifying an acoustic signal received from the outside.

Description

Bluetooth earset with ear canal microphone with built-in microphone

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an earset of a Bluetooth wireless communication function and a control method thereof, and more particularly to a Bluetooth earset incorporating an earphone microphone having a hearing aid function.

Earset is an earphone and micro-device which is usually used to make a call without using hands by connecting to a phone. It is also used for smart devices such as smart phones equipped with wireless network communication function and near- Accordingly, a hands-free device having a wireless communication function that is connected to a smart device as a main body by wireless communication such as Bluetooth is widely used. In such a form, a speaker portion for reproducing sound from a speaker smart device is inserted into the ear canal of the user's ear Ear canal earphones in the form of earsets are widely used.

A microphone for receiving a call voice in a normal hands-free device or earset, that is, a microphone is exposed to the outside and is distant from the mouth of a user to receive an external noise in addition to the call voice to deteriorate the call quality, There is a problem that is easily contaminated.

Accordingly, there has been attempted to develop and commercialize a hands-free device or earset incorporating an ear canal MIC in which a microphone is inserted into a user's ear outer ear canal to receive a user's voice transmitted through a eardrum .

In recent years, various types of hearing aids have been introduced to solve the problem of hearing loss due to various causes such as exposure to geriatric disease or long-term noise or accidents. A microphone for receiving an external sound, an amplifier for amplifying the sound, a speaker for outputting the amplified sound, and a receiver for amplifying the sound according to the auditory characteristics of the patient, A D / A converter and an A / D converter for converting a digital signal and an analog signal into each other, a processor for controlling amplification or conversion of a digital signal through various algorithms, and an interface with an external device.

However, when a user of such a hearing aid uses a hands-free device, that is, an earset, there is a problem in terms of structure. Therefore, it is impossible to use a hands-free device and a hearing aid at the same time for a user with hearing impairment. There is an urgent need to develop a hands-free device or ear-set having a hearing aid function that simultaneously performs a role and a role as a hands-free device.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a Bluetooth earset having built-in microphones for performing a voice call through a user terminal without being affected by external noise, The present invention provides a control method of a Bluetooth earset having a built-in earphone microphone of a new concept that simultaneously performs necessary hearing function for patients.

Another object of the present invention is to provide a Bluetooth earset having a built-in earphone microphone with a new concept that is easy to use and which can be switched to a simple operation by simultaneously using a hearing aid function and a voice call function through a user terminal and a control method thereof.

A further object of the present invention is to provide a Bluetooth earset having a built-in earphone microphone with improved speech quality in a Bluetooth communication mode for performing a voice call through a user terminal through a distinctive structure and function, do.

In order to accomplish the above object, the present invention provides a Bluetooth earset having a built-in ear canal microphone having a hearing aid function, wherein the earphone is projected to output a sound reproduced from the sound signal received by the Bluetooth wireless communication to a user's ear, A housing (10) having an output (11) formed and inserted into a user's ear; A microphone insertion portion 23a opened frontward to insert an earphone microphone 21 for receiving a voice of the user's ear and converting it into an electric signal and a microphone insertion portion 23a opened frontward and rearward to reproduce sound according to the electric signal received backward And a receiver insertion portion 23b formed with a hollow partition wall for receiving the output of the receiver 22 and opening the front sound output portion of the receiver 22 to transmit sound to the user's ear. A microphone / receiver receiver 20 including a module 22; An external sound receiver (30) including at least one external microphone for receiving an external sound and converting it into an electric signal, and reproducing the sound from the receiver and outputting the sound; And a drive control unit (40) for controlling the Bluetooth wireless communication and controlling transmission / reception and reproduction of acoustic signals and driving of the components for this purpose. The microphone / receiver accommodating unit (20) includes a microphone / receiver accommodating module The microphone insertion portion 23a of the microphone 22 is formed to be isolated from the receiver insertion portion 23b by the partition wall 23c forming the output tube, And the microphone insertion portion 23a is provided on the outer surface of the partition wall 23c in a forward direction by the microphone insertion portion 23a and the receiver insertion portion 23b of the receiver accommodating portion 20, The sound receiving unit in front of the ear canal microphone 21 is installed in front of the sound receiving unit in front of the receiver 22 so as to be positioned in front of the eardrum of the user. And the drive The controller 40 receives a control command according to a Bluetooth communication mode for transmitting and receiving a sound signal to / from a user terminal connected through a Bluetooth communication and performing a voice call through the user terminal and a hearing mode for amplifying a sound signal received from the outside And an input signal control unit 41 for switching the electrical connection between the main microphone 21 and the first external microphone 31 and selectively activating or deactivating them, thereby selectively performing the Bluetooth communication mode and the hearing aid mode, And a sound signal processing unit (42) for amplifying the voice signal and converting it into a digital sound signal, processing the signal in a predetermined manner through a digital signal processing (DSP), amplifying the processed electric signal and transmitting the amplified electric signal to the receiver (22) The external sound receiving unit 30 includes a first external microphone 31 for receiving an external sound and converting it into an electric signal, And a second external microphone for receiving and converting the electrical acoustic signal received through the first external microphone into an electrical acoustic signal received through the second external microphone, And reproduced by sound through the receiver 22 and output by the user through the application 300 installed in the user terminal 200 connected via the Bluetooth wireless communication, One or more hearing correction modes including an acoustic signal correction value for adjusting the amount of amplification for each frequency are stored for the received acoustic signal, and the input signal control unit 41 controls the connection with the first external microphone Activates it, then disconnects the electrical connection with the microphone and deactivates it, The sound signal processing unit 42 adjusts the amount of amplification of the sound signal received according to the hearing correction mode and outputs the sound signal.

Preferably, the touch operation recognizing unit 50 includes at least one touch pad for recognizing a user's operation. The touch operation recognizing unit 50 recognizes the touch operation recognized by the touch operation recognizing unit 50, The hearing mode is switched and performed.

The touch operation recognition unit 50 includes a first touch pad 51 for recognizing the first touch of the user and a second touch pad 52 for recognizing the second touch of the user, It is preferable that the volume of the sound signal reproduced in the receiver is adjusted according to the recognition order of the first touch and the second touch of the user recognized by the first touch pad 51 and the second touch pad 52. [

In addition, when performing a Bluetooth communication mode, it is preferable to reproduce the sound signal received from the user terminal through the Bluetooth wireless communication to output to the user's ear via the receiver 22, Converts an electric signal for the ear voice into an acoustic signal, and transmits the acoustic signal to the user terminal through the Bluetooth wireless communication.

Preferably, when performing the Bluetooth communication mode, the user's own voice received from the outside of the user's ear through the external microphone is received, and the received voice is received through the ear-hooked microphone 21 And corrects the acoustic signal of the user's ear voice.

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And a proximity sensor (60) for sensing wear of the user.

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Here, the drive control unit 40 amplifies the acoustic signal of the ear of the user received via the microphone 21 from the input signal control unit 41 in the Bluetooth communication mode, converts the amplified acoustic signal into a digital sound signal, DSP and transmits the modulated signal to the user terminal through the RF transmitter 47A. The sound signal processor 42 amplifies the voice signal received through the RF receiver 47B and converts the amplified voice signal into a digital sound signal Processed in a predetermined manner via digital signal processing (DSP), amplifies the processed electrical signal, and transmits it to the receiver 22.

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According to the present invention as described above, the function of the Bluetooth earset with built-in earphone microphone for performing voice communication through the user terminal without being affected by the external noise through the earphone microphone and the hearing function necessary for the hearing impaired user There is provided an effect of providing a Bluetooth earset having a built-in earpiece microphone and a control method thereof.

In addition, the Bluetooth earset with built-in earphone microphone of the present invention has a hearing function and a voice call function through a user terminal, but can be switched between simple operation and convenient operation.

Further, the Bluetooth earset with built-in earphone microphone of the present invention has an improved effect of improving the calling quality and the hearing function of the Bluetooth communication mode for performing voice communication through the user terminal through the distinctive structure and function.

1 is a view for explaining a system for simultaneously performing a hearing aid function and a Bluetooth communication function using a Bluetooth earset incorporating an ear canal microphone of the present invention
FIG. 2 is an exploded view of a main configuration of a Bluetooth earset incorporating an earphone microphone according to an embodiment of the present invention.
FIG. 3 is a cross-sectional view illustrating a configuration of a microphone / receiver accommodating portion of a Bluetooth earset incorporating an earphone microphone according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a main configuration of a Bluetooth earset incorporating an earphone microphone according to an embodiment of the present invention.
FIG. 5A is a functional block diagram of a Bluetooth earset incorporating an earpiece microphone according to an embodiment of the present invention. FIG.
5B and 5C are diagrams for explaining the main functions and operations of the input signal control unit 42 and the sound signal processing unit 43 of the Bluetooth earphone with built-in earphone microphone of the embodiment of the present invention
FIG. 6 is a flowchart of a method of controlling a Bluetooth earphone with a built-in microphone according to an embodiment of the present invention.
FIG. 7 is a flowchart of a method of performing a Bluetooth communication mode of a Bluetooth earset having a built-in microphone according to an embodiment of the present invention.
FIG. 8 is a flowchart of a method for performing a hearing aid mode of a Bluetooth earset having a built-in earphone according to an embodiment of the present invention.
FIG. 9 is a flowchart of a method of processing a sound signal of a Bluetooth ear-set having a built-in earphone according to an embodiment of the present invention.
FIG. 10 is a block diagram illustrating an embodiment of a hearing correction mode of a Bluetooth earset incorporating an earphone microphone according to an embodiment of the present invention

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with an embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is to be limited only by the appended claims, along with the full scope of equivalents to which the claims are entitled, if properly explained. In the drawings, like reference numerals refer to the same or similar functions throughout the several views.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 is a view for explaining a system for simultaneously performing a hearing aid function and a Bluetooth communication function using a Bluetooth earset incorporating an ear canal microphone of the present invention.

Referring to FIG. 1, the Bluetooth earset 100 incorporating an ear canal microphone of the present invention includes a Bluetooth earpiece 100 and a user terminal 200 having a call function and a Bluetooth wireless communication, as well as a general earset interlocking with the Bluetooth wireless communication. And carries out the hearing function independently.

The user terminal 200 is provided with an application 300 for adjusting settings of a Bluetooth earset 100 having a built-in hearing aid mode and an earphone microphone, and the application 300 is provided with an acoustic signal The set values of the hearing correction mode are stored. In this embodiment, four hearing correction modes are stored and selected by the user.

The user selects a hearing correction mode suitable for his or her hearing ability among the four hearing correction modes and the hearing correction mode selected is ported to the Bluetooth earset 100 through the Bluetooth wireless communication so that the hearing correction mode selected is the Bluetooth earset 100, As shown in FIG.

The hearing correction mode of the present embodiment is intended for a mildly hearing impaired person who does not hear a sound of 70 dB or less, which occupies 75% of the entire hearing impaired person. An analysis of the hearing test results for a mild hearing impaired person Lt; RTI ID = 0.0 > 10 < / RTI >

According to the set value of the hearing correction mode of the acoustic signal ported and set in the earset 100, the acoustic signal processing unit, which performs the function of the Audio DSP of the Bluetooth earset 100 having the built-in microphone, processes the acoustic signal, The Bluetooth earset 100 having the built-in microphone of the present invention is used as an independent hearing aid without interlocking with the user terminal.

The Bluetooth earset 100 having the built-in earphone microphone of the present invention has a built-in earphone microphone that performs voice communication through the user terminal without being affected by external noise through the earphone microphone. A Bluetooth communication that performs mutual switching between simple operation and voice communication through a user terminal while simultaneously performing a call function and a hearing function necessary for a hearing impaired person and simultaneously performing a hearing function and a voice communication function through a user terminal Mode communication quality is improved, and the hearing aid function is improved, respectively, as described below.

FIG. 2 is an exploded view of a main configuration of a Bluetooth earset incorporating an earphone microphone according to an embodiment of the present invention. FIG. 3 is a block diagram illustrating a configuration of a microphone / receiver accommodating unit of a Bluetooth earphone with an earphone microphone according to an embodiment of the present invention FIG. 4 is a cross-sectional view of a main configuration of a Bluetooth earset incorporating an earphone microphone according to an embodiment of the present invention. Referring to FIGS. 2 to 4, Explain.

2, the Bluetooth earset 100 incorporating an ear canal microphone of the present invention includes a housing 10, a microphone / receiver accommodating unit 20, an external acoustic receiver 30, and a drive control unit 40 .

The housing 10 has an external appearance of a general earset and is formed to have a hollow coupling part protruding to output a sound reproduced from the sound signal received by the Bluetooth wireless communication to the user's ear and inserted into the ear of the user A cover housing 12, and a window cover 13, which are detachably coupled to the outer circumferential surface of the output unit.

The microphone / receiver accommodating unit 20 includes an echo cancellation microphone 21 for receiving a voice in the ear of a user and converting it into an electric signal, a receiver 22 for reproducing and outputting sound according to the received electric signal, And a receiver 22 is inserted in the rear and the front sound output unit of the receiver 22 is opened to transmit sound to the user's ear And a microphone / receiver accommodating module 23 in which a receiver inserting portion 23b for forming an output tube by a hollow partition wall is formed.

The earphone microphone 21 receives the voice of the user's ear and converts it into an electric signal. The earphone microphone 21 inserts the voice into the ear of the user to block external noises and transmits only voice of the user to the caller during a voice call. The ear tip 12 of the ear canal type is used in the present embodiment and the ear hook microphone 21 has a mounting position located in the ear of the user in front of the output unit 11. [

It is preferable to use a microphone manufactured in the form of a MEMS microphone, that is, a microelectromechanical system (MEMS).

The receiver 22 preferably receives a voice of the user's ear and converts it into an electric signal, and preferably a balanced armature (BA) driver having advantages of miniaturization and excellent sensitivity is used.

Receiver 20 and the receiver 22 are connected to the microphone / receiver accommodating portion 20 by the structural features of the microphone inserting portion 23a and the receiver inserting portion 23b of the microphone / The microphone inserting portion 23a and the receiver inserting portion 23b.

The earphone microphone 21 and the receiver 22 are separated from each other by the microphone inserting portion 23a and the receiver inserting portion 23b of the microphone / And the receiver 22 operate together in the ears of the user, that is, the external auditory canal, which is the same closed space, so that the voice of the voice communication party transmitted from the user terminal and reproduced in the receiver is received at the next microphone, It is possible to prevent the echo or the ringing phenomenon through the mechanical structure by listening to this voice again with a little time lag.

In addition, in addition to this, such an echo or echo phenomenon can be completely eliminated by a method of echo cancellation processing of an acoustic signal by an echo cancellation processing unit of a sound signal processing unit described later.

3, the receiver insertion portion 23a of the microphone / receiver accommodating module 23 is connected to the microphone / receiver accommodating portion 23a of the microphone / receiver accommodating module 23 in order to allow the microphone / receiver accommodating portion of the Bluetooth ear- An output tube is formed by a hollow partition wall 23c which is opened front and rear so that the receiver 22 is inserted in the rear and the front sound output unit of the receiver 22 is opened to transmit sound to the user's ear, The microphone inserting portion 23a is formed so as to be separated from the receiver inserting portion 23b by a partition 23c forming an output tube.

The microphone insertion portion 23a has a structure integrally formed with the partition wall 23c so as to open forward on the outer surface of the partition wall 23c, Quot;

3, it is preferable that the sound receiving unit in front of the ear canal microphone 21 is installed in front of the sound receiving unit in front of the receiver 22 in the vicinity of the eardrum of the user, It is possible to more clearly receive the voice of the receiver and to minimize the interference with the sound reproduced by the receiver.

The microphone / receiver accommodating module 23 of the microphone / receiver accommodating portion 20 is preferably integrally formed by including the microphone inserting portion 23a and the receiver inserting portion 23b, Can be used for production.

The external sound receiving unit 30 includes at least one external microphone for receiving an external sound, converting the external sound into an electrical signal, and reproducing the sound from the receiver 22 to be output.

In the present embodiment, a first external microphone 31 for receiving an external sound and converting it into an electric signal, and a second external microphone 32 for receiving external sound and converting the external sound into an electric signal, The microphone 31 receives the user's own voice received from the outside of the user's ear and transmits the user's voice through the earphone microphone 21 according to the acoustic signal for the user's voice received through the second external microphone 32 And to correct the acoustic signal of the ear sound of the received user.

4, the driving control unit 40 controls the Bluetooth wireless communication, transmits / receives / reproduces the acoustic signals, and controls driving of the constituent parts thereof. The driving control unit 40 structurally includes an upper PCB 40a, A battery 42b constituting a power supply unit and a lower PCB 40c. Various electrical / electronic components for performing the above functions are mounted on the upper PCB 40a and the lower PCB 40c, .

In the present invention, the driving control unit 40 includes a Bluetooth communication mode for transmitting and receiving a sound signal to and from a user terminal connected via Bluetooth communication, and a hearing mode for amplifying an externally received sound signal .

In performing the Bluetooth communication mode, the user terminal is connected to the user terminal through Bluetooth wireless communication to perform a function of a general Bluetooth earset. In addition to the mechanical shielding structure described above, an echo cancellation process And then performs a function of eliminating echo or howling generated by using a cone microphone.

Reproducing the sound signal received from the user terminal through the Bluetooth wireless communication through the receiver (22) so as to be output to the user's ear when the Bluetooth communication mode is performed, Converts the electric signal into an acoustic signal, and transmits the acoustic signal to the user terminal through the Bluetooth wireless communication.

In addition, when the Bluetooth communication mode is performed, the user's own voice received from the outside of the user's ear through the external microphone is received, and the user's voice received through the microphone 21 It is possible to correct the acoustic signal of the ear sound, that is, to use the main microphones 21 as the main microphones and to use the external microphones, that is, the first external microphones or the second external microphones, And performs a function of correcting the tone of the acoustic signal of the user's ear voice received through the main microphone in-ear microphone 21 based on the tone color.

One or more hearing correction modes including an acoustic signal correction value for adjusting the amplification amount for each frequency are stored for a sound signal received in a predetermined manner, and the drive control unit (40) And adjusts the amount of amplification by frequency.

On the other hand, when performing the hearing aid mode, the controller 30 controls the amount of amplification of the electrical sound signal of the sound received through the first external microphone 31 of the external sound receiver 30 according to the hearing correction mode .

At this time, the electrical sound signal of the sound received through the first external microphone 31 of the external sound receiver 30 is corrected according to the electrical sound signal of the sound received through the second external microphone 32, (22), and outputs the reproduced sound.

Also, in the present embodiment, in order to turn on / off the power of the Bluetooth earset with built-in microphones (the ON / OFF standby state of the operation or forced on / off of the power supply) And a touch operation recognizing unit 50 including at least one touch pad for recognizing the touch operation.

The touch operation recognition unit 50 of the present embodiment includes a first touch pad 51 for recognizing the first touch of the user and a second touch pad 52 for recognizing the second touch of the user, The Bluetooth communication mode is switched from the hearing aid mode to the Bluetooth communication mode at the time of receiving a telephone call in accordance with the touch state of use recognized through the two touch pads of the pad 51 and the second touch pad 52, Or to end the voice call or to switch to the hearing mode at the same time.

It is also possible to adjust the volume of the sound signal reproduced by the receiver according to the recognition order of the first touch and the second touch by the user.

In addition, in the present embodiment, it further includes a proximity sensor 60 that senses wear of the user. When the user removes the Bluetooth earset from the ear in the ON / OFF standby state of the operation using the proximity sensor 60, The power is turned off, and conversely, when the user installs the Bluetooth earset in the ear, the power can be turned on to minimize power consumption.

In addition, the display device may further include a display unit (not shown) that visually informs the user of the operation state of the device and the state of the battery. In this embodiment, three LEDs are used.

FIG. 5A is a functional block diagram of a Bluetooth earset incorporating an earphone microphone according to an embodiment of the present invention. FIG. 5B is a functional block diagram of a Bluetooth earset incorporating an earphone mic in an embodiment of the present invention, And a main function and operation of the processing unit 43. [

5A and 5B, the functional features of the present invention include an ear canal microphone 21 and a receiver 22 included in the microphone / receiver accommodating portion 20 of the Bluetooth earset 100 having the ear canal microphone, A user terminal 30 connected via the Bluetooth communication by the control of the drive control unit 40 to the first external microphone 31 included in the external acoustic receiver 30 and the second external microphone 32, A Bluetooth communication mode for transmitting and receiving a sound signal to perform a voice call through the user terminal, and a hearing mode for amplifying an externally received sound signal.

In addition, a touch input unit (touch pad) constituting the touch operation recognition unit 50, a proximity sensor 60 for sensing the wear of the user, a control of the drive control unit 40 for the display unit 70, Receives a selection input of the user for performing the Bluetooth communication mode and the hearing aid mode, and performs a function of displaying an operation state or the like.

Therefore, the functional configuration of the Bluetooth earset in which the earphone microphone of the present invention is built will be described, focusing on the configuration of the drive control section 40 and the respective functions.

5A, the drive control unit 40 includes an input signal control unit 41, an audio signal processing unit 42, a power control unit 43, a memory 44, an I / F control unit 45, a central processing unit 46, An RF transmitting unit 47A and an RF receiving unit 47B, and a power supply unit and a power charging unit.

The input signal control unit 41 receives a control command according to the Bluetooth communication mode and the hearing mode of the central processing unit 46 and then switches the electrical connection between the main microphone 21 and the first external microphone 31, And transmits the received sound signal to the sound signal processing unit 43 through the central processing unit 46.

That is, the input signal control unit 41 activates it through the electrical connection with the earpiece microphone 21 in the Bluetooth communication mode and transmits the acoustic signal of the user's ear voice received through the earphone microphone 21 to the central processing unit 46 To the sound signal processing unit 42. [

The input signal control unit 41 activates the first external microphone 31 in connection with the first external microphone 31 in the hearing mode, disconnects the electronic connection with the external microphone 21 and deactivates it, 31 to the sound signal processing unit 42 through the central processing unit 46. The sound signal processing unit 42,

The input signal control unit 41 transmits the external sound signal received from the second external microphone 32 to the sound signal processing unit 42 through the central processing unit 46.

The acoustic signal processing unit 42 amplifies the acoustic signal of the user's ear voice received through the earphone microphone 21 received from the input signal control unit 41 through the central processing unit 46 in the Bluetooth communication mode, Modulates it in a predetermined manner through a digital signal processing (DSP), transmits it to the user terminal through the RF transmitter 47A, amplifies the voice signal received through the RF receiver 47B and converts it into a digital sound signal Processed in a predetermined manner via a digital signal processing (DSP), amplified and transmitted to the receiver 22 so as to be reproduced by sound.

At this time, the amplification amount of the acoustic signal received in a predetermined manner according to the acoustic signal correction value in the hearing correction mode is adjusted for each frequency and transmitted to the receiver 22.

In the digital signal processing (DSP) process, the external sound signal received from the second external microphone 32 is received through the central processing unit 46 to extract an acoustic signal for the user's voice, And correcting an acoustic signal of a user's ear voice received through the earpiece microphone (21) based on the signal.

The acoustic signal processing unit 42 amplifies the external sound signal received through the first external microphone 31 received from the input signal control unit 41 through the central processing unit 46 in the hearing mode and converts the amplified external sound signal into a digital sound signal Processed in a predetermined manner via a digital signal processing (DSP), amplifies the processed electric signal, and transmits the amplified electric signal to the receiver 22 to reproduce sound.

In addition, the digital signal processing (DSP) receives an external sound signal received from the second external microphone 32 through the central processing unit 46, and receives the sound signal received through the first external microphone 31 based on the sound signal. And correcting the signal.

The power control unit 43 controls ON / OFF of the power supplied from the battery 40b according to the control command of the central processing unit 46 and controls the operation of the power charging unit.

Also, the power control unit 43 detects the power state, that is, whether or not the charging is completed, whether the battery is discharged, or whether the charging is proceeding, from the power source unit or the power charging unit to the central processing unit 46 so as to be displayed on the display unit 70 in a predetermined manner do.

In the memory 44, various setting data including data such as an algorithm for digital signal processing (DSP) and a sound correction value of the hearing correction mode, and a control algorithm for driving the Bluetooth earset with a built-in microphone are programmed And is used in accordance with the call of the central processing unit 46. [

The I / F control unit 45 controls the key input unit (touch pad), the proximity sensor 60 that senses wear of the user and the display unit 70 according to a control command of the central processing unit 46, Receives the touch input from the proximity sensor 60 and transmits the touch input to the central processing unit 46 and receives the proximity detection signal from the proximity sensor 60 and transmits it to the central processing unit 46.

The central processing unit 46 generates a control command for controlling the operations of the input signal control unit 41 and the sound signal processing unit 42 according to the Bluetooth communication mode and the hearing mode and outputs the control command to the control unit 41 and the sound signal processing unit 42, And a control command for controlling the operation of the control unit 41 and the sound signal processing unit 42 is based on a user's input or touch recognition recognized through a key input unit (touch pad).

That is, the key input unit (touch pad) constituting the touch operation recognition unit 50 includes a first touch pad 51 for recognizing the first touch of the user and a second touch pad 51 for recognizing the second touch of the user. The first touch pad 51 and the second touch pad 52 are connected to the first touch pad 51 and the second touch pad 52 by a user's input or touch recognition, A control command for switching the Bluetooth communication mode and the hearing mode between the Bluetooth communication mode and the hearing mode is generated or transmitted according to the touch sequence for the pad 51 and the second touch pad 52, In addition, a control command for controlling ON / OFF of the power supply can be generated and transmitted based on the user's input or touch recognition recognized through the key input unit (touch pad).

The control command generated according to any user's input or touch recognition may be preset by the user and stored in the drive program and changed.

For example, when a touch is recognized at a predetermined time interval by the first touch pad 51 and the second touch pad 52, a control command for raising or lowering the volume according to the direction is generated. In the Bluetooth communication mode, The first touch pad 51 and the second touch pad 52 are switched to the hearing mode when the touch is continued for the first time and the first touch pad 51 and the second touch pad 52 And generates a control command to switch to the Bluetooth communication mode when the touch is continued for the first time with respect to the one. When the touch is continued for a second time with respect to at least one of the first touch pad 51 and the second touch pad 52, power is set to generate a control command for controlling ON / OFF of the power.

In addition, the central processing unit 46 generates a control command for controlling ON / OFF of the power source, and transmits the control command to the power control unit 43 as an electrical signal for a predetermined proximity from the proximity sensor 60 , And controls the Bluetooth wireless communication with the user terminal and controls the operation of the Bluetooth earset having the built-in microphone according to the stored driving program.

The RF transmitting unit 47A and the RF receiving unit 47B transmit and receive a signal for voice communication with the user terminal through the Bluetooth wireless communication and receive various kinds of information such as the hearing correction mode through the application 300 installed in the user terminal 200 And performs the function of receiving the set data and the required drive program.

Referring to FIGS. 5B and 5C, the main functions and operations of the input signal control unit 41 and the sound signal processing unit 42 of the Bluetooth earset with built-in earphone microphone according to an embodiment of the present invention This will be described more specifically.

5B and 5C, the input signal control unit 41 receives a control command according to the Bluetooth communication mode and the hearing mode of the central processing unit 46, Lt; RTI ID = 0.0 > 31 < / RTI >

In the case of FIG. 5B, when the control command according to the Bluetooth communication mode is received, the controller 30 is electrically connected to the main microphone 21 to activate the main microphone 21 and deactivate the first external microphone 31. Accordingly, the input signal processing unit 41 transfers the sound signal of the user's ear voice received through the earphone microphone to the sound signal processing unit 42 through the central processing unit 46, Receives the user's own voice received from the outside of the ear and transmits the sound signal of the received user's voice to the sound signal processing unit 42 through the central processing unit 46. [

On the other hand, in the case of FIG. 5C, when the control command according to the hearing aid mode is received, the first external microphone 31 is activated by electrically connecting to the first external microphone 31 in the hearing aid mode, Deactivate. Accordingly, the input signal processing unit 41 transmits the sound signal for the external sound received through the first external microphone 31 to the sound signal processing unit 42 through the central processing unit 46, and the second external microphone 32 to the sound signal processing unit 42 through the central processing unit 46. The sound signal processing unit 42, as shown in FIG.

Referring to FIG. 5B, the acoustic signal processing unit 42 receiving the control command according to the Bluetooth communication mode functionally includes an input signal amplifying unit, an input signal converting unit, an echo cancellation processing unit, a noise filter, an equalizer (Hearing correction mode), the signal strength correction unit, and the output signal amplification unit to perform necessary functions.

In the Bluetooth communication mode, it processes the acoustic signal of the user's ear voice received from the next microphone 21, transmits the acoustic signal to the user terminal through the RF transmitter 47A, and transmits the acoustic signal from the user terminal through the RF receiver 47B And outputs the processed sound signal to the receiver 22 so that the sound signal is reproduced as sound.

[Acoustic signal processing in Bluetooth communication mode]

The acoustic signal processing process for the ear of the user, which is received and transmitted from the microphone 21, will now be described in detail.

In the Bluetooth communication mode, the acoustic signal processing is a process of processing the acoustic signal for the user's ear voice received from the next microphone 21 and transmitting the processed acoustic signal to the RF transmitter 47A and transmitting the processed acoustic signal to the user terminal through the RF receiver 47B And processing the sound signal for the transmitted call voice to output to the receiver 22 so as to be reproduced as sound.

The acoustic signal for the user's ear voice received from the main microphone 21 is input to the input signal amplifying unit, input signal converting unit, echo cancellation processing unit, noise filter, And the output signal amplifying unit is activated to perform the following digital sound signal processing.

Then, when an acoustic signal corresponding to the user's ear voice received from the main microphone 21 is received, the input signal amplifying unit amplifies the acoustic signal corresponding to the user's ear voice.

The input signal converting unit converts an amplified sound signal into a digital sound signal by performing an ADC (Analog Digital Converting) process in an input signal converting unit, that is, an input signal converting process to convert the input signal into a digital signal.

In addition, the input signal converter converts the sound signal of the user's ear sound received at the earphone microphone 21 to the second external microphone 32 before performing the operation of removing or reducing the noise from the noise filter A preprocessing operation is performed to correct the user's tone of the acoustic signal for the user's ear voice received through the subsequent microphone 21 to the acoustic signal of the voice of the user's voice heard from the outside by performing correction based on the inputted acoustic signal do.

For example, if a subsequent microphone is used, the high frequency component of the user's voice disappears or decreases in the sound signal, and only the sound signal for the low frequency component sound is left, which is different from the tone of the user listening to the outside. Accordingly, the external noise of the acoustic signal inputted through the second external microphone 31 is removed, the acoustic signal for the user's voice is extracted, and the sensitivity is adjusted for each frequency to remove the low-frequency component and the remaining high- And then the sound signal of the user's ear voice received through the earphone microphone 21 is corrected according to the acoustic signal of the user's voice received through the second external microphone in a manner of synthesizing the sound signal inputted from the earphone microphone So that it can be corrected to an acoustic signal close to the tone of the user.

As a result, the user who listens to the sound signal of the user's ears received through the microphone can minimize the experience of the awkward tone.

The echo cancellation processing unit may include an echo canceling processing unit that receives an acoustic signal received through a receiver and an acoustic signal output from the receiver in order to reduce a phenomenon that an acoustic signal of the other party, An echo cancellation process is performed through a delay process to a predetermined time for the sound signal, for example.

The noise filter removes noises such as ambient noise and wind noise input through the micro-input signal or white noise generated electrically in the terminal, for the digital sound signal subjected to the tone color correction and echo cancellation processing A noise filtering process is performed, and this is implemented by a noise canceling algorithm in which the characteristics of the general noise are considered.

The signal intensity correction unit performs a signal intensity correction process for adjusting the signal intensity so that the sound signal received from the digitally processed echo canceller microphone 21 can be reproduced at a constant volume as described above, The level of the sound is small so that the other party can perform the call smoothly.

The output signal amplifying unit performs an output signal amplifying process of amplifying the output signal according to the size of the volume selected or changed by the user.

As described above, the acoustic signal of the user's ear voice processed by the acoustic signal is transmitted to the user terminal through the RF transmitter 47A in the Bluetooth wireless communication system.

In the processing of the acoustic signal for the voice call transmitted through the RF receiving unit 47B, the acoustic signal converted through the Bluetooth wireless communication is in the form of a digital sound signal.

Accordingly, for the acoustic signal transmitted through the RF reception unit 47B, the noise filter, equalizer (hearing correction mode), signal strength correction unit, and output signal amplification unit of the part 42b are activated to generate the digital sound signal Processing is performed.

The noise filter performs a noise filtering process for removing noise such as a white noise electrically generated inside the terminal with respect to the digital sound signal received through the Bluetooth wireless communication. The noise filter performs a noise filtering algorithm .

The equalizer (hearing correction mode) includes a correction mode for adjusting the amount of amplification of the sound signal in accordance with one or more hearing correction modes including an acoustic signal correction value for adjusting the amount of amplification for each frequency with respect to an acoustic signal received in a predetermined manner The correction value application process is performed.

The signal strength correction unit performs a signal strength correction process to adjust the signal strength so that the signal strength is output to the receiver at a predetermined signal size so that the user can listen to the small sound so that the user can hear the sound. The signal intensity is adjusted so as to protect the user's ear by reducing a loudly input signal at a certain level or higher.

The acoustic signal for the voice sound transmitted from the user terminal through the RF receiver 47B processed as described above is output to the receiver 22 and reproduced as sound.

According to the embodiment, the acoustic signal for the speech voice transmitted from the user terminal through the RF receiving unit 47B processed with the acoustic signal is transmitted to the receiver 22 together with the acoustic signal for the ear sound of the user, And reproduced as sound.

Referring to FIG. 5C, the acoustic signal processing unit 42 receiving the control command according to the hearing mode functions functionally includes an input signal amplifying unit, an input signal converting unit, an echo cancellation processing unit, a noise filter , An equalizer (hearing correction mode), a signal strength correction unit, and an output signal amplification unit.

In the hearing aid mode, the input signal processing unit 41 transmits the acoustic signal for the external sound received through the first external microphone 31 to the acoustic signal processing unit 42 through the central processing unit 46, And transmits the sound signal for the external sound to the sound signal processing unit 42 through the central processing unit 46 from the sound processing unit 32.

[Acoustic Signal Processing in Hearing Mode]

In the hearing mode, an acoustic signal for the external sound received from the first external microphone 31 is transmitted to the receiver 22 for reproduction as sound.

In the hearing aid mode, the first external microphone and the second external microphone are activated, the first external microphone 31 operates as the main micro, and the second external microphone is used as the auxiliary micro for correction of the external acoustic signal.

The input signal amplifying unit performs an input signal amplification process for amplifying an acoustic signal for the external sound received from the first external microphone 31 and the second external microphone 32.

The input signal converter converts an amplified sound signal into a digital sound signal by performing an analog-to-digital conversion (ADC) process in an input signal converter for DSP processing.

In addition, the input signal converter may convert the electrical sound signal of the sound received through the first external microphone to the sound of the sound received through the second external microphone, before performing the operation of removing or reducing the noise from the noise filter. And performs a preprocessing operation for correcting it according to an electrical acoustic signal. For example, the intensity of a sound signal between the first external microphone, which is the main microphone, and the second external microphone, which is the auxiliary microphone, is adjusted, and the frequency components of the acoustic signals input to the first external microphone 31 and the second external microphone 32 The difference in frequency components is removed as a pre-processing, thereby enhancing the noise removing effect.

In the present embodiment, the normal echo cancellation process 930 is omitted in the hearing aid mode, but a general echo cancellation unit or process may be added according to the embodiment.

The noise filter performs a noise filtering process on the corrected digital sound signal to remove noises such as input ambient noise and wind noise or white noise generated electrically in the inside of the terminal, Removal algorithm.

The acoustic signal for the external sound received and transmitted from the first external microphone 31 processed as described above is output to the receiver 22 and reproduced as sound.

FIG. 6 is a flowchart illustrating a method of controlling a Bluetooth earphone with a built-in microphone according to an embodiment of the present invention.

The control method of the Bluetooth earset with built-in microphone is basically the same as that of the Bluetooth earset 100 (100) having the built-in earphone microphone including the earphone microphones 21 and the external microphone and the touch operation recognition unit 50 The touch operation recognizing unit 50 receives and recognizes a user's touch operation and compares the recognized touch operation with a predetermined touch operation to determine whether the touch operation is a selection input for the Bluetooth communication mode or the hearing mode A mode selection input step (S10) for judging whether the mode is selected; A Bluetooth communication mode setting step (S21) of setting a Bluetooth communication mode when it is determined that the Bluetooth communication mode is selected in the mode selection input step (S10); A hearing aid mode setting step (S22) of setting a hearing aid mode when it is determined that the hearing aid mode is selected in the mode selection input step (S10); In the Bluetooth communication mode setting step S21, the earphone microphone 21 is activated and the external microphone 31 is inactivated by being electrically connected to the earphone microphone 21, and the hearing mode setting step S22 ) Is electrically connected to the external microphone 31 to activate the external microphone 31 and deactivate the built-in microphone 21.

In addition, a mode performing step (S30) of processing an acoustic signal received by at least one of the earphone microphone (21) and the external microphone (31), outputting the acoustic signal to the receiver (22) and reproducing it as sound; If the user's touch operation is inputted through the touch operation recognizing unit 50 during the mode execution step S30, the recognized touch operation is compared with the preset touch operation to determine whether or not the input is for the mode conversion A mode conversion input receiving step S40; And when the mode conversion input is determined to be present in the Bluetooth communication mode, the hearing aid mode setting step (S22) is performed to change the mode setting to the hearing aid mode. If it is determined that there is a mode conversion input in the hearing aid mode, (S21) to change the mode setting to the Bluetooth communication mode (S50).

Referring to FIG. 6, the process of controlling the mode setting of the Bluetooth earphone with built-in earphone microphone of the present invention will be described in detail.

When the Bluetooth earset with built-in earphone microphone of the present invention is turned on or a user's wear is sensed by the proximity sensor 60 in the ON / OFF standby state of the power supply, the operation enters the ON standby state. (50).

A mode selection input step of inputting and recognizing the touch operation of the user through the touch operation recognition unit 50 and comparing the recognized touch operation with a preset touch operation to determine whether the touch input is a selection input for the Bluetooth communication mode or the hearing mode (S10) is performed.

If the Bluetooth communication mode is determined in the mode selection input step (S10), the Bluetooth communication mode setting step (S21) is performed, and if it is determined to be the hearing mode, the hearing mode setting step (S22) is performed.

In the Bluetooth communication mode setting step S21, the central processing unit 46 generates a control command according to the Bluetooth communication mode and transmits the control command to the input signal processing unit 41. The input signal processing unit 41 receives the control command, 21 so as to activate the earpiece microphone 21 and deactivate the first external microphone 31.

Accordingly, the input signal processing unit 41 transmits the acoustic signal for the user's ear voice received through the microphone to the sound signal processing unit 42 through the central processing unit 46, The sound signal processing unit 42 receives the user's own voice received from the outside of the ear and transmits the sound signal of the received user's voice to the sound signal processing unit 42 through the central processing unit 46. The sound signal processing unit 42 processes the sound signal, The audio signal for the audio of the ear of the user is transmitted to the user terminal by the Bluetooth wireless communication system through the RF transmitter 47A and the acoustic signal for the voice sound transmitted from the user terminal through the RF receiver 47B is processed by the receiver 22 (Step S30) is performed.

In the hearing aid mode setting step S22, the central processing unit 46 generates a control command according to the hearing aid mode and transmits the control command to the input signal processing unit 41. The input signal processing unit 41 receives the control command, So as to activate the first external microphone 31 and deactivate the second microphone 21.

Accordingly, the input signal processing unit 41 transmits the sound signal for the external sound received through the first external microphone 31 to the sound signal processing unit 42 through the central processing unit 46, A mode performing step S30 for transmitting an acoustic signal for an external sound to the acoustic signal processing unit 42 through the central processing unit 46, processing the received acoustic signal, outputting the processed acoustic signal to the receiver 22, and reproducing the sound signal as sound .

The mode conversion input receiving step S40 recognizes that the user's touch operation is inputted through the touch operation recognizing unit 50 during the mode execution step S30 and compares the recognized touch operation with a predetermined touch operation It is determined whether the input is for mode conversion.

Also, according to an embodiment, it is determined whether or not a call is received from the user terminal during the hearing mode.

In the mode setting change step S50, when it is determined that there is a mode conversion input in the Bluetooth communication mode, the hearing aid mode setting step S22 is performed to change the mode setting to the hearing aid mode, The Bluetooth communication mode setting step S21 is performed to change the mode setting to the Bluetooth communication mode.

In addition, according to an embodiment, when it is determined that there is a call reception from the user terminal during the hearing mode, the Bluetooth communication mode setting step S21 is performed to change the mode setting to the Bluetooth communication mode.

Further, according to an embodiment of the present invention, the mode setting control process of the Bluetooth earphone with built-in earphone microphone of the present invention is performed in a step S22 of automatically setting the hearing aid mode when the power is turned on before the mode selection input step S10, Next, the mode conversion input receiving step S40 determines whether the mode conversion input or the telephone reception is performed, and the Bluetooth communication mode setting step S21 is performed through the mode setting changing step S50 to change the mode setting to the Bluetooth communication mode . &Lt; / RTI >

FIG. 7 is a flowchart illustrating a method of performing a Bluetooth communication mode of a Bluetooth earset having an earphone microphone according to an exemplary embodiment of the present invention. FIG. 8 is a flowchart illustrating a method of performing a hearing aid mode of a Bluetooth earphone with a built- FIG. 9 is a flowchart of a method of processing a sound signal of a Bluetooth earset incorporating an earphone microphone according to an embodiment of the present invention. FIG. 10 is a flowchart illustrating a method of hearing correction of a Bluetooth earphone with an earphone microphone to be.

7 to 10, an embodiment of a Bluetooth communication mode and a method for performing a hearing aid mode of a Bluetooth earset with a built-in microphone will be described in detail.

Referring to FIG. 7, in a basic Bluetooth communication mode, when the power of the Bluetooth earset with built-in earphone microphone of the present invention is turned on or when the wearer is worn by the proximity sensor 60 in a power ON / ON standby state, and waits for an operation mode selection input through the touch operation recognition unit 50. Then, the touch operation recognition unit 50 receives and recognizes the touch operation of the user, A mode selection input step S10 is performed to determine whether the input is a selection input for the Bluetooth communication mode or the hearing aid mode, in comparison with the set touch operation.

Next, it is determined whether the mode determined in the mode selection input step S10 is the Bluetooth communication mode (step 710). In case of the Bluetooth communication mode, the Bluetooth communication mode is set to activate the external microphone and the second external microphone 720 If the voice communication is completed, the Bluetooth communication mode is terminated (S740). In the mode selection input step (S10), the Bluetooth communication mode is performed (S740) .

In some embodiments, the Bluetooth communication mode may be terminated (740) and the hearing mode may be automatically performed.

If it is determined in step 710 that the Bluetooth communication mode is not the Bluetooth communication mode in FIG. 7, it is determined in step 810 whether the Bluetooth communication mode is the hearing mode shown in FIG.

Referring to FIG. 8, in the basic hearing mode, when the power of the Bluetooth earset with built-in earphone microphone of the present invention is turned on or the wearer is worn by the proximity sensor 60 in the ON / OFF standby state of the power supply, Enters a standby state, waits for an operation mode selection input through the touch operation recognizing unit 50, inputs and recognizes the touch operation of the user through the touch operation recognizing unit 50, and recognizes the recognized touch operation A mode selection input step S10 is performed to determine whether the input is a selection input for the Bluetooth communication mode or the hearing aid mode in comparison with the touch operation.

Next, in step 810, it is determined whether the mode determined in the mode selection input step S10 is the hearing aid mode. In the hearing aid mode, the first external microphone and the second external microphone are activated 820, To set the hearing aid mode and perform the hearing aid mode (830). In operation 831, it is determined whether or not there is an input for ending the hearing mode during the hearing mode. That is, an input for ending the hearing mode is received through the touch operation recognition unit 50, If there is an input for ending the hearing mode, the hearing mode is terminated (832).

In addition, it is determined (833) whether a change input of the hearing correction mode is made through the touch operation recognition unit 50 during the hearing mode. If the change input of the hearing correction mode exists, the equalizer (hearing correction mode) (834) to reset the hearing mode and perform the hearing mode (830).

In addition, it is determined whether or not a telephone call is received from the user terminal during the hearing aid mode (835). When a telephone call is received, the hearing aid mode is terminated (840), and the Bluetooth communication mode is performed to activate The first external microphone is activated (850), so that the Bluetooth communication mode, i.e., voice communication is performed (830), and it is determined whether the voice communication is terminated (861) (S740), and performs a mode selection input step (S10).

Then, the acoustic signal processing process of the Bluetooth communication mode and the hearing aid mode performing method of the Bluetooth earset in which the built-in microphone is built will be followed by the acoustic signal processing process for the ear sound of the user received from the microphone 21, The acoustic signal processing process for the external microphone 31 and the acoustic signal for the external sound received from the first external microphone 31 will be described in detail.

In the Bluetooth communication mode, the earpiece microphone 21 and the first external microphone (or the second external microphone) are activated, the earphone microphone 21 is operated as the main microphone, and the second external microphone is used as the auxiliary microphone do. In addition, the RF transmitting unit 47A and the RF receiving unit 47B are activated to transmit and receive acoustic signals according to the call with the user terminal through the Bluetooth wireless communication method.

In the Bluetooth communication mode, an input signal amplification process 910 is first performed on the acoustic signal corresponding to the user's ear voice received from the microphone 21 and amplified by the input signal amplification unit.

The amplified sound signal is converted into a digital sound signal by performing an ADC (Analog Digital Converting) process in an input signal converting unit, that is, an input signal converting process 920 for converting a digital signal into a digital signal for DSP processing.

Also, in the input signal conversion process 920, the input signal converter converts the sound signal of the user's ear sound received at the earphone microphone 21 into a sound signal, By correcting based on the acoustic signal input to the second external microphone 32, the user's tone of the acoustic signal corresponding to the user's ear voice received through the subsequent microphone 21 is sounded from the outside of the user's voice It is possible to perform a preprocessing operation of correcting by a signal.

The digital sound signal is subjected to an echo cancellation process 930 by an echo cancellation processing unit. Then, an echo cancellation process 930 is performed on the digital sound signal, For example, by delaying a sound signal by a predetermined time using a time difference between an acoustic signal output to a receiver and a subsequent micro-input signal in order to reduce a phenomenon that an acoustic signal of a sound signal Cancelation processing is performed

Next, with respect to the echo cancellation process and the tone-corrected digital sound signal, ambient noise and wind noise input through the micro-input signal through the noise filter, or white noise generated electrically in the inside of the terminal A noise filtering process 940 for removing noise is performed, which is implemented by a noise canceling algorithm in which general characteristics of the noise are considered.

In the Bluetooth communication mode, the correction mode correction value application process 950 is omitted for the acoustic signal received through the earpiece microphone. In the signal intensity correction process 960, the acoustic signal received from the next microphone 21 So that the signal strength can be reproduced at a constant volume. This allows a small level of sound to be amplified and a large level of sound to be small so that the other party can perform the call smoothly.

Then, the output signal amplifying unit 970 performs an output signal amplifying process 970 for amplifying the output signal in accordance with the size of the volume selected by the user.

On the other hand, with respect to the voice sound transmitted through the RF receiver 47B in the Bluetooth communication mode, the sound signal received through the Bluetooth wireless communication in the process of processing the sound signal is converted into a digital sound signal, The amplification process 910 and the input signal conversion process 920 are omitted and a noise filtering process 940 for removing noise such as a white noise electrically generated inside the terminal is performed.

When the noise elimination is completed, the acoustic signal is converted into a frequency signal in accordance with one or more hearing correction modes including an acoustic signal correction value for adjusting an amplification amount of the acoustic signal received in a predetermined manner through an equalizer (hearing correction mode) A calibration mode correction value application process 950 for adjusting the amplification amount is performed.

10, in order to improve the hearing loss of a specific frequency band for the hearing impairment of a specific frequency band, the hearing aid hearing mode is divided into 32 steps in the order of 250 Hz in an audio frequency bandwidth (0 to 8 KHz) The hearing aid is adjusted to adjust the amount of signal amplification for each frequency so as to perform the process of correcting the hearing ability. One or more hearing correction modes of the acoustic signal including the hearing aid gain value. In this embodiment, four hearing aid hearing mode setting values are stored, It is used according to your choice.

The user selects a hearing correction mode suitable for his or her hearing among the four hearing correction modes and the selected hearing correction mode is set to the Bluetooth earset 100 through the Bluetooth wireless communication from the application 300 of the user terminal 200 And the ported and selected hearing correction mode is set in the Bluetooth ear set 100. [

Next, a signal intensity correction process 960 is performed to adjust the signal intensity so that the acoustic signal processed by applying the correction value is output to the receiver at a constant signal intensity through the signal intensity corrector. This is to protect the user's ears by minimizing a loud signal input at a certain level or more in order to prevent the user from hearing the user's ears due to a loud noise being input because the small sound is raised.

The acoustic signal for the voice sound transmitted from the user terminal through the RF receiving unit 47B processed by the acoustic signal is output to the receiver 22 and reproduced as sound.

In the hearing aid mode, the first external microphone and the second external microphone are activated, the first external microphone 31 operates as the main micro, and the second external microphone is used as the auxiliary micro for correction of the external acoustic signal, 1 processes the sound signal for the external sound received from the external microphone 31 and transmits the sound signal to the receiver to reproduce the external sound received from the first external microphone 31 as sound in the receiver.

An input signal amplifying unit 910 is first performed in an input signal amplifying unit for an acoustic signal for an external sound received from the first external microphone 31 and the second external microphone 32, A signal conversion process 920 is performed to convert the amplified sound signal into a digital sound signal by an ADC (Analog Digital Converting) process in an input signal conversion unit for DSP processing.

Also, in the input signal converting process 920, the input signal converting unit may convert the electrical sound signal of the sound received through the first external microphone to the second sound signal of the second external microphone before performing the operation of removing or reducing the noise in the noise filter. A preprocessing operation may be performed in which correction is performed in accordance with the electrical acoustic signal of the sound received through the external microphone. In the preprocessing operation, the intensity of the acoustic signal between the first external microphone, which is the main microphone, and the second external microphone, which is the auxiliary microphone, is adjusted, and the intensity of the acoustic signal input to the first external microphone 31 and the second external microphone 32 A method of analyzing the difference of the frequency components and removing the difference frequency components as a pre-processing can be used.

In the hearing mode, the normal echo cancellation process 930 may be omitted. However, in some embodiments, a normal echo cancellation process may be performed.

Next, a noise filtering process 940 is performed to remove noise such as ambient noise and wind noise or white noise generated electrically in the terminal through the micro-input signal through the noise filter with respect to the digital sound signal , Which is implemented by a noise canceling algorithm that takes into account the general characteristics of the noise.

10, in order to improve the hearing loss of a specific frequency band for a hearing impaired person with a specific frequency band, the hearing aid hearing mode is divided into 32 steps in an audio frequency bandwidth (0 to 8 KHz) And the hearing aid is adjusted by adjusting the amount of signal amplification. In this embodiment, four hearing aid hearing mode setting values are stored in the one or more hearing correction modes of the acoustic signal including the hearing aid gain value, Lt; / RTI >

Then, an output signal amplifying process 970 for amplifying and outputting the sound signal in accordance with the size of the volume selected by the user is performed through the output signal amplifying unit, and the acoustic signal for the external sound for which the processing of the sound signal is completed is transmitted to the receiver 22 And reproduced as sound.

As has been described above, specific combinations of configurations or steps of the present invention have been described in detail by way of the above embodiments, but other combinations of such configurations and steps are likewise possible. The present invention is not limited to the specific embodiments disclosed herein, and such other combinations are incorporated into the scope of the present invention. Therefore, the present invention is not limited to the above-described embodiments, and various modifications and changes may be made thereto by those skilled in the art to which the present invention belongs.

100: Bluetooth earphone with built-in microphone 200: User terminal
300: Application
10: housing 20: microphone / receiver housing
30: external sound receiver 40:

Claims

1. A Bluetooth earphone (100) having a built-in microphone having a hearing aid function,
A housing (10) including an output part (11) protruded to output sound reproduced from the sound signal received by the Bluetooth wireless communication to a user's ear and formed with a hollow coupling part and inserted into a user's ear; A microphone insertion portion 23a opened frontward to insert an earphone microphone 21 for receiving a voice of the user's ear and converting it into an electric signal and a microphone insertion portion 23a opened frontward and rearward to reproduce sound according to the electric signal received backward And a receiver insertion portion 23b formed with a hollow partition wall for receiving the output of the receiver 22 and opening the front sound output portion of the receiver 22 to transmit sound to the user's ear. A microphone / receiver receiver 20 including a module 22; An external sound receiver (30) including at least one external microphone for receiving an external sound and converting it into an electric signal, and reproducing the sound from the receiver and outputting the sound; And a drive control unit (40) for controlling the Bluetooth wireless communication, performing transmission / reception and reproduction of acoustic signals,
The microphone / receiver accommodating portion 20 is formed such that the microphone inserting portion 23a of the microphone / receiver accommodating module 22 is isolated from the receiver inserting portion 23b by the partition wall 23c forming the output tube The earpiece 21 and the receiver 22 are isolated from each other by the microphone inserting portion 23a and the receiver inserting portion 23b of the microphone /
The microphone insertion portion 23a is integrally formed with the partition wall 23c in such a manner that the microphone insertion portion 23a is open only to the outside of the partition wall 23c and the sound receiving portion in front of the ear- (22), which is closer to the user's eardrum than the sound receiving unit in front of the eardrum (22)
The drive control unit 40 transmits a control command according to a bluetooth communication mode for transmitting and receiving a sound signal with a user terminal connected through Bluetooth communication and performing a voice call through the user terminal and a hearing mode for amplifying an externally received sound signal And an input signal control unit 41 for selectively activating or deactivating the first external microphone 31 by switching the electrical connection between the first external microphone 31 and the second external microphone 31 to selectively perform the Bluetooth communication mode and the hearing aid mode And a sound signal processing unit 42 for amplifying the voice signal and converting it into a digital sound signal, processing it in a predetermined manner through digital signal processing (DSP), amplifying the processed electric signal, and transmitting the amplified electric signal to the receiver 22 ,
The external sound receiving unit 30 includes a first external microphone 31 for receiving an external sound and converting it into an electric signal, and a second external microphone for receiving external sound and converting the external sound into an electric signal, , An electric acoustic signal of the sound received through the first external microphone is corrected according to an electrical acoustic signal of the sound received through the second external microphone, and the sound is reproduced through the receiver (22)
A sound signal correction value which is pre-selected and stored by the user through the application 300 installed in the user terminal 200 connected via Bluetooth wireless communication and which adjusts the amount of amplification of the sound signal received in a predetermined manner, Wherein at least one hearing correction mode is stored,
The input signal control unit 41 activates the first external microphone in connection with the first external microphone in the hearing mode, disconnects the electrical connection with the external microphone and deactivates the external connection, And the sound signal processing unit (42) adjusts the amount of amplification of the acoustic signal received according to the hearing correction mode and outputs the amplified sound signal. Bluetooth earset.

The method according to claim 1,
And a touch operation recognizing unit (50) including at least one touch pad for recognizing a user's operation of the touch operation. The touch operation recognizing unit (50) recognizes that the Bluetooth communication mode and the hearing mode Wherein the second earphone is connected to the first earphone.

3. The method of claim 2,
The touch operation recognition unit 50 includes a first touch pad 51 for recognizing the first touch of the user and a second touch pad 52 for recognizing the second touch of the user, 51) and the second touch pad (52), and adjusts the volume of the sound signal reproduced by the receiver according to the recognition order of the first touch and the second touch of the user recognized by the second touch pad (52) Earset.

The method according to claim 1,
Reproducing the sound signal received from the user terminal through the Bluetooth wireless communication through the receiver (22) so as to be output to the user's ear when the Bluetooth communication mode is performed, Converts the electrical signal into an acoustic signal, and transmits the acoustic signal to the user terminal through the Bluetooth wireless communication.

5. The method of claim 4,
In the Bluetooth communication mode, the user's own voice received from the outside of the user's ear through the external microphone is received, and the user's ear voice And the acoustic signal of the earphone microphone is corrected.

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The method according to claim 1,
Further comprising a proximity sensor (60) for sensing wear of the user.

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The method according to claim 1,
The drive control unit 40 amplifies the acoustic signal of the user's ear voice received from the input signal control unit 41 through the microphone 21 and changes the digital sound signal into a digital sound signal, The sound signal processing unit 42 amplifies the sound signal received through the RF receiving unit 47B and converts the amplified sound signal into a digital sound signal, Is processed through a signal processing (DSP) in a predetermined manner, and the processed electric signal is amplified and transmitted to the receiver (22).

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