KR101527004B1 - Audio device with active noise canceling - Google Patents

Audio device with active noise canceling Download PDF

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Publication number
KR101527004B1
KR101527004B1 KR1020130163826A KR20130163826A KR101527004B1 KR 101527004 B1 KR101527004 B1 KR 101527004B1 KR 1020130163826 A KR1020130163826 A KR 1020130163826A KR 20130163826 A KR20130163826 A KR 20130163826A KR 101527004 B1 KR101527004 B1 KR 101527004B1
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KR
South Korea
Prior art keywords
terminal
active noise
acoustic signal
audio input
output device
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Application number
KR1020130163826A
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Korean (ko)
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KR20150032142A (en
Inventor
이종배
박구택
김태영
Original Assignee
크레신 주식회사
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Application filed by 크레신 주식회사 filed Critical 크레신 주식회사
Priority to KR1020130163826A priority Critical patent/KR101527004B1/en
Priority to PCT/KR2014/009246 priority patent/WO2015099269A1/en
Publication of KR20150032142A publication Critical patent/KR20150032142A/en
Application granted granted Critical
Publication of KR101527004B1 publication Critical patent/KR101527004B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones

Abstract

The present invention relates to an audio input / output device, and more particularly, to an audio input / output device, which includes a connection unit inserted into an earphone jack of a terminal and having a plurality of audio signal output terminals, a voice signal input terminal, and a ground terminal for relaying an audio input / An active noise control unit for recognizing noise generated around the audio input / output device and generating a canceling noise of the noise; And a switch unit for generating a control signal to turn on and off the active noise control unit and transmitting the control signal to the terminal, wherein the active noise control unit is supplied with power from the terminal, And an audio input / output device that receives the audio signal through the audio signal input terminal and drives the active noise control function.
According to the present invention, there is no need for a separate battery and charging means in using the active noise control function, so that it is easy to carry, and the weight generated in the battery is reduced, thereby minimizing inconvenience when worn, It is possible to reduce the size of the audio input / output device.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an audio device,

The present invention relates to an audio input / output device that provides an active noise control function.

In recent years, terminal users such as smart phones and mobile phones use audio input / output devices such as ear sets and head sets to clearly receive contents during a content viewing or voice call through a terminal. However, when the ambient noise is excessive, the content is not transmitted smoothly and the volume is increased. When the high-volume listening is continued for a long time, the user may be hearing-impaired. I was able to damage people around me.

In order to solve such a problem, Korean Unexamined Patent Application Publication No. 2004-0042218 (hereinafter referred to as " prior art "), an active noise canceling unit receives an ambient noise in an audio input / And the sound is passed through the speaker, so that the surrounding noise is canceled and clear listening is possible even if the volume is kept low.

However, in the prior art, a power supply means such as a battery is additionally required to use the active noise control function. Since a separate battery is formed inside, the size of the audio input / output device increases, There is a problem that the total weight is increased and the wear is inconvenient.

It is an object of the present invention to provide an audio input / output device in which an additional power supply means for supplying power to the active noise control unit is not required.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide an apparatus and method for controlling the same.

According to an aspect of the present invention, there is provided an active noise control audio input / output device including a plurality of audio signal output terminals for relaying signals generated by an audio input / output device and a terminal, A connection portion having a ground terminal; An active noise control unit for recognizing noise generated around the audio input / output device and generating a canceling noise of the noise; And a switch unit for generating a control signal to turn on and off the active noise control unit and transmitting the control signal to the terminal, wherein the active noise control unit is supplied with power from the terminal, Or the voice signal input terminal.

A first filter unit connected to the sound signal output terminal to prevent the power supplied from the terminal from flowing back to the terminal; A second filter unit connected to the first filter unit to block the inflow of the power source and to pass only an acoustic signal; As shown in FIG.

A first speaker connected to the second filter unit to output an acoustic signal; And a second speaker connected to a sound signal output terminal of the plurality of sound signal output terminals that is not connected to the first filter unit and outputs an acoustic signal; As shown in FIG.

Meanwhile, the active noise control unit may be branched and connected between the first filter unit and the second filter unit.

In addition, the active noise control unit may be branched at one point of the audio signal input terminal.

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As described above, the present invention has the following effects.

First, in using the active noise control function, a separate battery and charging means for supplying power to the active noise control unit are not required in the audio input / output device, thereby providing convenience of carrying.

Second, the weight generated in the battery mounted inside the audio input / output device can be reduced, so that inconvenience in wearing can be minimized.

Third, since a space for storing a separate battery is not required inside, the size of the audio input / output device can be reduced.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

1 is a block diagram of an audio input / output device according to a first embodiment of the present invention.
2 is a block diagram of an audio input / output device according to a second embodiment of the present invention.

The preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings, in which the technical parts already known will be omitted or compressed for simplicity of explanation.

1 is a block diagram of an audio input / output device according to a first embodiment of the present invention.

The audio input / output device 100 according to the first embodiment of the present invention includes a plurality of audio signal output ports (not shown) connected to the audio input / output device 100 and the terminal 200, (110) having a sound input terminal (111, 112), a sound signal input terminal (113), a ground terminal (114), and an active noise The active noise control unit 120 includes a control unit 120 and a control unit 120. The active noise control unit 120 receives power required for driving from the terminal 200 and outputs the sound signal through one of a plurality of sound signal output terminals 111 and 112 or a sound signal input terminal 113 Can be supplied.

The connection section 110 is composed of four poles and the arrangement order of four poles composed of a plurality of sound signal output terminals 111 and 112, a voice signal input terminal 113 and a ground terminal 114 is an earphone jack May be configured differently depending on the arrangement of terminals.

The first acoustic signal output terminal 111 of the connection unit 110 is supplied with both the power generated by the power supply unit 210 of the terminal 200 and the acoustic signal generated from the right audio output terminal 220, And the second sound signal output terminal 112 receives the sound signal from the left audio output terminal 230 of the terminal 200. [

The audio signal input terminal 113 of the connection unit 110 is connected to the microphone input terminal 240 of the terminal 200 and outputs a voice signal input from the microphone 160 of the audio input and output apparatus 100 to the terminal 200 send.

The ground terminal 114 of the connection unit 110 is grounded by being connected to the ground terminal 250 of the terminal 200.

Meanwhile, the active noise control unit 120 receives the noise from the audio input / output device 100, analyzes the frequency of the noise, generates a canceling sound having a phase opposite to the frequency, and outputs the canceled sound through the output terminal of the active noise control unit 120 To the speaker (140).

The audio input and output device 100 according to the first embodiment of the present invention is connected to the first sound signal output terminal 111 to prevent the power supplied from the terminal 200 from being adversely introduced into the terminal 200 And a second filter unit 132 connected to the first filter unit 131 and the first filter unit 131 for blocking the inflow of power and allowing only the acoustic signal to pass therethrough.

When the first filter unit 131 supplies power to the first sound signal output terminal 111 of the audio input and output device 100 through the right audio output terminal 220 of the terminal 200, It is possible to prevent the terminal 200 from malfunctioning and malfunctioning.

The second filter unit 132 allows the first speaker unit 141 connected to the second filter unit 132 to output a stable sound signal by passing the sound signal but shutting off the power source.

Here, the second filter unit 132 uses a capacitor which cuts off the DC signal and passes the AC signal.

The audio input / output apparatus according to the first embodiment of the present invention includes a first speaker 141 connected to the second filter unit 132 to output a sound signal, and a second speaker 132 connected to the first one of the plurality of sound signal output terminals 111 and 112 And a second speaker 142 connected to the sound signal output terminal 112 that is not connected to the filter unit 131 and outputs an acoustic signal.

The first speaker 141 receives the acoustic signal transmitted from the right audio output terminal 220 of the terminal 200 to the first acoustic signal output terminal 111 and the acoustic signal transmitted through the second filter unit 132 of the power supply .

Also, the speaker 140 can simultaneously output the sound signal supplied from the terminal 200 and the canceling sound generated by the active noise control unit 120. [

Meanwhile, the active noise control unit 120 of the audio input / output device 100 according to the first embodiment of the present invention may be branched and connected between the first filter unit 131 and the second filter unit 132.

That is, the power generated by the power supply unit 210 of the terminal 200 is supplied from one point of the right audio output terminal 220, and the first sound of the connection unit 110, which is connected to the ear jack terminal of the terminal 200, The acoustic signal and the power supply flow simultaneously to the signal output terminal 111.

At this time, only the acoustic signal is transmitted from the second filter unit 132 through the first filter unit 131 to the first speaker 141.

On the other hand, a power source that has not passed through the second filter unit 132 flows to the first relay switch 170.

The first relay switch 170 senses an electrical signal and is connected to the active noise control unit 120. The second relay switch 180 senses an electrical signal flowing through the first relay switch 170, The power is not supplied to the audio signal input terminal 113. [

Here, the active noise control unit 120, which is supplied with power, generates an offset sound and outputs it through the speaker 140, thereby attenuating ambient noise.

Also, the active noise control unit 120 of the audio input / output device 100 according to the first embodiment of the present invention may be branched at one point of the audio signal input terminal 113 and connected thereto.

The power generated by the power supply unit 210 of the terminal 200 is supplied from one point of the microphone input terminal 240 and the voice signal input terminal 113 of the connection unit 110 connected to the earphone jack of the terminal 200 The second relay switch 180 may be connected and the first relay switch 170 may be cut off and supplied to the active noise control unit 120. [

The audio input and output apparatus 100 according to the first embodiment of the present invention further includes a switch unit 150 for generating a control signal to turn on and off the active noise control unit 120 and transmitting the control signal to the terminal 200 can do.

Here, the switch unit 150 transmits an electric signal generated in the course of operating the switch by the user to the terminal 200, and the terminal 200 supplies or blocks the power of the power supply unit 210, (120) can be turned on and off.

The audio signal input terminal 113 of the audio input and output device 100 is connected to the microphone input terminal 240 of the terminal 200 to receive a voice signal and transmit the voice signal to the terminal 200, A remote controller (not shown) for generating an electric signal for volume control, reproducing and stopping of the sound source, and starting and ending a call, and transmitting the electric signal to the terminal 200.

2 is a block diagram of an audio input / output device according to a second embodiment of the present invention.

Here, the configuration of the audio input / output device 300 that receives power through the second sound signal output terminal 312 and the audio signal input terminal 313 is shown, and a detailed description of the same or similar configuration to that of the first embodiment is omitted .

The power generated by the power supply unit 410 of the terminal 400 is supplied from one point of the left audio output terminal 430 and is supplied to the second acoustic signal output terminal of the connection unit 310 connected to the ear jack terminal of the terminal 400. [ So that the acoustic signal and the power supply are simultaneously supplied to the speaker 312.

At this time, only a sound signal is transmitted from the second filter unit 332 to the second speaker 342 through the first filter unit 331, and the power source that does not pass through the second filter unit 332 is transmitted to the second relay unit 332, And flows to the switch 370.

Here, the first relay switch 370 sensing the electric signal is connected, the power is supplied to the active noise control unit 320, and the second relay switch 380, which senses the electric signal flowing through the first relay switch, is shut off The power does not flow to the audio signal input terminal 113.

As a result, the present invention drives the active noise control unit using the power supplied through the power supply unit of the terminal, so that the user does not need a separate battery and charging means and is portable, The present invention provides an audio input / output device capable of minimizing inconvenience when worn and reducing the overall size of the device without requiring a space for accommodating a separate battery therein.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. And the scope of the present invention should be understood as the following claims and their equivalents.


100, 300: Audio input / output device
110, 310:
111, 311: first sound signal output terminal
112, 312: a second acoustic signal output terminal
113, 313: audio signal input terminal
114, 314: ground terminal
120, 320: active noise control unit
130 and 330:
131, 331:
132, 332:
140, 340: Speaker
141, 341: first speaker
142, 342: second speaker
150, 350:
160, 360: Microphone
170, 370: first relay switch
180, 380: second relay switch
200, 400: terminal
210, 410: Power supply
220, 420: Right audio output terminal
230, 430: Left audio output terminal
240, 440: microphone input terminal
250, 450: Ground terminal

Claims (6)

A connection unit having a first acoustic signal output terminal, a second acoustic signal output terminal, a voice signal input terminal, and a ground terminal, which are inserted into earphone jacks of the terminal;
A first speaker for outputting an acoustic signal transmitted from the terminal to the first acoustic signal output terminal of the connection unit;
A second speaker connected to the second acoustic signal output terminal of the connection unit and outputting an acoustic signal;
When power is supplied from the terminal to the first acoustic signal output terminal of the connection unit, power is supplied through the first acoustic signal output terminal, and when power is supplied from the terminal to the voice signal input terminal of the connection unit, An active noise controller for generating a canceling sound having a reverse phase of the noise generated from the surroundings and transmitting the generated canceling sound to the first speaker and the second speaker; And
And a switch unit for generating and transmitting a control signal to the terminal so as to turn on and off the active noise control unit
Active noise control audio input / output device.
The method according to claim 1,
A filter unit for interrupting a power source of the acoustic signal from the first acoustic signal output terminal and a power source; Further comprising:
Wherein the first speaker outputs an acoustic signal that has passed through the filter unit
Active noise control audio input / output device. delete delete delete delete
KR1020130163826A 2013-12-26 2013-12-26 Audio device with active noise canceling KR101527004B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020130163826A KR101527004B1 (en) 2013-12-26 2013-12-26 Audio device with active noise canceling
PCT/KR2014/009246 WO2015099269A1 (en) 2013-12-26 2014-10-01 Audio input/output device for active noise control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020130163826A KR101527004B1 (en) 2013-12-26 2013-12-26 Audio device with active noise canceling

Related Child Applications (3)

Application Number Title Priority Date Filing Date
KR1020150036797A Division KR101616452B1 (en) 2015-03-17 2015-03-17 Audio device with active noise canceling
KR1020150036882A Division KR101616454B1 (en) 2015-03-17 2015-03-17 Audio device with active noise canceling
KR1020150036614A Division KR101560619B1 (en) 2015-03-17 2015-03-17 Audio device with active noise canceling

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KR20150032142A KR20150032142A (en) 2015-03-25
KR101527004B1 true KR101527004B1 (en) 2015-06-09

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WO (1) WO2015099269A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11184705B2 (en) 2019-11-01 2021-11-23 Synaptics Incorporated Protection of speaker from excess excursion

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000059223A (en) * 2000-07-24 2000-10-05 이대헌 Vocal massage transmissive ear-microphone for a portable phone
JP2004280704A (en) * 2003-03-18 2004-10-07 Seiko Epson Corp Backflow prevention circuit of power supply device
KR20090011615A (en) * 2007-07-27 2009-02-02 (주)케이티에프테크놀로지스 Direct current blocking capacitor built-in ear-phone and mobile telephone using the same
KR20090103484A (en) * 2008-03-28 2009-10-01 에스텍 주식회사 Blue tooth head set

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3413693B2 (en) * 1995-08-23 2003-06-03 ソニー株式会社 Headphone equipment
KR100788678B1 (en) * 2006-01-14 2007-12-26 삼성전자주식회사 Apparatus and method for reducing noise of earphone

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000059223A (en) * 2000-07-24 2000-10-05 이대헌 Vocal massage transmissive ear-microphone for a portable phone
JP2004280704A (en) * 2003-03-18 2004-10-07 Seiko Epson Corp Backflow prevention circuit of power supply device
KR20090011615A (en) * 2007-07-27 2009-02-02 (주)케이티에프테크놀로지스 Direct current blocking capacitor built-in ear-phone and mobile telephone using the same
KR20090103484A (en) * 2008-03-28 2009-10-01 에스텍 주식회사 Blue tooth head set

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WO2015099269A1 (en) 2015-07-02

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