KR101673787B1 - Sound output system for vehicle - Google Patents

Sound output system for vehicle Download PDF

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Publication number
KR101673787B1
KR101673787B1 KR1020150094536A KR20150094536A KR101673787B1 KR 101673787 B1 KR101673787 B1 KR 101673787B1 KR 1020150094536 A KR1020150094536 A KR 1020150094536A KR 20150094536 A KR20150094536 A KR 20150094536A KR 101673787 B1 KR101673787 B1 KR 101673787B1
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KR
South Korea
Prior art keywords
bone conduction
seat
conduction speaker
sound
vehicle
Prior art date
Application number
KR1020150094536A
Other languages
Korean (ko)
Inventor
김길주
정찬호
나선채
이상욱
송은성
변득규
Original Assignee
현대자동차주식회사
서강대학교산학협력단
현대다이모스(주)
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Application filed by 현대자동차주식회사, 서강대학교산학협력단, 현대다이모스(주) filed Critical 현대자동차주식회사
Priority to KR1020150094536A priority Critical patent/KR101673787B1/en
Application granted granted Critical
Publication of KR101673787B1 publication Critical patent/KR101673787B1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00Stereophonic arrangements
    • H04R5/02Spatial or constructional arrangements of loudspeakers
    • H04R5/023Spatial or constructional arrangements of loudspeakers in a chair, pillow
    • B60N2/48
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/13Hearing devices using bone conduction transducers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10General applications
    • H04R2499/13Acoustic transducers and sound field adaptation in vehicles

Abstract

The present invention relates to a sound output system for vehicles, and aims to provide a sound output system for vehicles, which allows passengers as well as a driver to individually listen to a sound they want, the drivers driving a vehicle over long distances, so the diversity and personal tastes of the passengers can be given due regard and the privacy inside the vehicle can be protected. To this end, provided is a sound output system for vehicles, comprising: a bone conduction speaker which is installed in a headrest of each seat in a vehicle to allow a driver or passenger who sits on the seat to listen to a sound; and a head unit which selects a sound signal to be outputted to the bone conduction speaker of each seat and transmits the selected sound signal to the corresponding bone conduction speaker so that the selected sound signal is outputted.

Description

[0001] The present invention relates to a sound output system for vehicle,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a sound output system for a vehicle, and more particularly, it relates to a sound output system for a vehicle, which enables a passenger to individually listen to a desired sound including a driver during long- , And a vehicle sound output system capable of protecting personal privacy in a vehicle interior.

The development of acoustic and multimedia technologies today is driving the evolution of comfortable cars and convenient vehicles that can provide infotainment to drivers, as well as systems that can provide high quality sound and multimedia content to both the driver and passengers in the vehicle. Development.

The audio system of the vehicle is provided in cooperation with the driver information system, the navigation system, the telematics system, and the like so as to provide various information, multimedia contents, and sound required by the driver.

The use of speakers is essential in providing audio and multimedia content to drivers and passengers in a conventional vehicle, and the main components for audio reproduction in an audio system (or AVN (Audio, Video, Navigation) system) A signal processor, a head unit with built-in amplifier, and speakers installed at each position in the vehicle.

Here, the DSP performs processing on the acoustic signal inputted through the input terminal under the control of the CPU, and the amplifier amplifies the acoustic signal processed by the DSP and outputs the amplified acoustic signal to each speaker in the vehicle.

On the other hand, recently, as the spread of mobile phones has rapidly increased, mobile phones have become a necessity, and more and more mobile phones are being held with one hand while driving. This not only hinders driving but also distracts driver attention It can cause accidents.

To solve these problems, a hands-free device for mounting in a vehicle has been developed. A hands-free device is a device that enables a user to talk without having to hold a mobile phone by hand while driving a vehicle. It is a separate hands-free device having a holder and a cigar jack A form used by being connected to a vehicle, or a form in which a hands-free device can be used in a vehicle.

Such a hands-free device is disclosed in Korean Patent Publication No. 10-0666372, Korean Patent Publication No. 10-2003-0050311, and the like.

However, since the voice of the other party is output through the speaker in the vehicle interior, such a hands-free device has a disadvantage in that privacy may be infringed because the contents of the conversation can be heard by other passengers.

To avoid this, the driver may use earphones or the like, but he / she may interfere with safe driving if the earphone is connected to the ear during driving.

In addition, the above-described in-vehicle sound output system, that is, the audio system including the speaker, outputs sound only through a speaker installed in the vehicle, so that all passengers including the driver must listen to the same sound.

In recent years, a plurality of passengers including a driver have been traveling on a long distance in a vehicle.

In addition, the number of passengers using the smartphone or tablet PC during the long distance travel is increasing. When the sound of the sound source such as a song is outputted through the speaker in the vehicle while moving, the use of the smart device such as the smartphone or the tablet PC of the individual passenger It can be an obstruction.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a navigation system and a navigation system in which a passenger can listen to a desired sound individually including a driver during long- And it is an object of the present invention to provide a vehicle sound output system capable of protecting personal privacy in a vehicle interior.

In order to achieve the above object, according to the present invention, there is provided a bone conduction speaker provided in a headrest of each seat in a vehicle so that a driver and a passenger who are seated can hear the sound. And a head unit for selecting a sound signal to be output for each bone conduction speaker of each seat and transmitting the selected sound signal to the bone conduction speaker separately so that the selected sound signal can be outputted .

In addition, the bone conduction speaker has a Bluetooth module for separately receiving the selected acoustic signal transmitted from the head unit.

The head unit may further include a speaker output mode for outputting sound through the vehicle speaker and a seat output mode for transmitting the selected sound signal to the bone conduction speaker so that the individual sound is output through the bone conduction speaker Is selected and operated.

In addition, the head unit generates a music list of the selected tunes for each seat when the user selects a desired song through the operation among the tunes stored in the memory, and plays the tunes in the music list in order or in an arbitrary order And transmits the acoustic signals for each seat individually to the bone conduction speakers.

In addition, the head unit generates a music list of the selected music for each seat when a user selects a desired music through operation among the music stored in the memory, and performs an operation of selecting a music in the music list for each seat The sound signal for reproduction of the selected tune is individually transmitted to the bone conduction speaker of the corresponding seat.

The head unit is characterized by having a hands-free mode for transmitting the other party's voice signal at the time of hands-free communication to the bone conduction speaker of the driver's seat and outputting it.

In addition, the bone conduction speaker is built in the soft part in a headrest including an internal hard part and a soft part surrounding the hard part, and is installed to be supported by the hard part inside the soft part .

In addition, the bone conduction speaker may be installed in a structure exposed at a soft part such that at least a part of the bone conduction speaker can be in contact with the skin of a user seated in the seat.

Preferably, the bone conduction speaker is connected to a wire installed along the hollow interior of the headrest stay to receive operating power from the wire.

In addition, the bone conduction speaker is connected to a single seat ECU or an individual seat ECU provided for each seat so as to receive operating power, and the seat ECU is communicably connected to the head unit, It is preferable that the power supply and operation of the bone conduction speaker can be controlled under the cooperative control.

Thus, the following effects can be provided in the vehicle sound output system according to the present invention.

1) Since the sound can be heard through the bone conduction speaker mounted on the head rest instead of the vehicle speaker in the vehicle interior, individual passengers can listen to the desired sound without exposing the sound to the surrounding people, and the privacy can be guaranteed It becomes.

2) Since hands-free calls can be made using bone conduction speakers, privacy can be guaranteed during calls.

3) Since the driver can listen to other sounds with his / her ears, he / she can hear the horn sound of the opponent vehicle during driving, and can communicate with other passengers while listening to the sound.

4) By listening to sound using bone conduction speaker, there is no risk of damage of ear drum even when used for a long time. It uses bone conduction principle which transmits sound to auditory nerve rather than transmitting through ear drum, so it is easy for hearing- .

1 is a perspective view showing a state in which a bone conduction speaker is installed in a headrest in a sound output system for a vehicle according to an embodiment of the present invention.
2 is a configuration diagram showing a configuration of a sound output system for a vehicle according to an embodiment of the present invention.
3 is a diagram for explaining the operation of the vehicle sound output system according to the embodiment of the present invention.
4 is a diagram illustrating a state in which music selected in the head unit of the vehicle sound output system according to the embodiment of the present invention and hands-free call voice are transmitted to each seat through Bluetooth communication.
5 is a diagram illustrating an example in which individual music is selected from music lists for each seat after 'Personal Mode', which is a seat-based output mode, is selected in a head unit of a sound output system for a vehicle according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains.

The present invention allows a passenger to individually listen to a desired sound including a driver during a long distance travel using the vehicle, thereby improving the diversity and personal preference of the passenger, and the vehicle sound Output system.

In the present invention, a bone conduction speaker is installed in the headrest of each seat in a vehicle, and a bone conduction speaker of each seat cooperates with a vehicle audio system (or AVN system) so that individual sounds can be output independently .

FIG. 1 is a perspective view showing a state in which a bone conduction speaker is installed on a headrest in a sound output system for a vehicle according to an embodiment of the present invention, FIG. 2 is a diagram showing a configuration of a sound output system for a vehicle according to an embodiment of the present invention to be.

Referring to FIG. 1, there is shown a state in which a bone conduction speaker 20 is installed on a front portion of a headrest 10.

2, in a headrest 10 including an internal hard part 11 and a soft part 12 surrounding the hard part 11, in a state where the driver and the passenger are seated, It can be seen that the bone conduction speaker 20 is embedded in the position of the soft part 12 where the skin of the user can be contacted.

At this time, the bone conduction speaker 20 mounted on the headrest 10 of each seat in the vehicle can be installed in the soft part 12 but can be installed to be supported by the hard part 11, And at least a part of the bone conduction speaker 20 is exposed to the skin of the driver and the passenger when the head is leaned against the headrest 10 in a seated state.

At this time, the bone conduction speaker 20 can be installed at a position where the bone conduction speaker 20 can be contacted to the back of the driver and the passenger, or to the skin of both the left and right ear wheels or the surroundings. In the embodiment of FIG. 2, Are arranged on both the left and right sides of the headrest 10.

The bone conduction speaker 20 may be a Bluetooth built-in bone conduction speaker 20 incorporating a Bluetooth module (not shown), and a power source for operating the bone conduction speaker 20 may be a hollow interior of the headrest stay 13 Through the wire connected from the seat ECU 2 to the bone conduction speaker 20 through the wire.

The bone conduction speaker 20 can be installed in each seat of the vehicle, and each bone conduction speaker 20 can be provided with a single integrated seat ECU 2 or a separate seat And is connected to the ECU 2.

The seat ECU 2 is communicably connected to a head unit 1 serving as a control unit of a vehicle audio system (or AVN system) and is connected to a bone conduction speaker 20 can be controlled.

In addition, the acoustic signals are transmitted from the head unit 1 of the vehicle audio system to the bone conduction speaker 20 installed in each seat through the Bluetooth communication, and then output from each bone conduction speaker 20, The Bluetooth module of the bone conduction speaker 1 and the Bluetooth module of each bone conduction speaker 20 are individually connected to each other by Bluetooth so that the sound signal selected for each seat is transmitted from the head unit 1 to the individual bone conduction speaker 20 via Bluetooth .

Accordingly, when the driver and the passenger lean on the headrest 10 while sitting on the seat, the user can listen to the sound selected by the seat outputted through the bone conduction speaker 20 provided on the headrest 10 of the seat At this time, the sound signals transmitted through the bone conduction speaker 20 may be different sound signals for each seat.

The structure, operation principle, and listening principle of the bone conduction speaker 20 are well known in the art. The bone conduction speaker 20 does not directly hear the sound wave through the eardrum but transmits the vibration directly to the cochlea through the skin and cartilage, , And unlike earphones, you can listen to other sounds around you because your ears do not block your ears.

Therefore, in the case of the driver, it is possible to listen to a warning sound such as a horn sound of the neighboring vehicle with ears so that the danger can be sensed in advance, and the driver and the passenger can hear the sound transmitted through the bone conduction speaker 20 It is possible.

In addition, since the problem of safety accident due to the wearing of the earphone can be solved, the use of the bone conduction speaker 20, which spreads like a wave, can help the ear health, The sound transmitted to the cochlea directly through the auditory nerve is transmitted to the brain. Therefore, it is possible to prevent the eardrum from being damaged even after listening for a long time, and furthermore, the hearing aid can hear the sound of the hearing impaired.

3 is a view for explaining the operation of the sound output system for a vehicle according to the embodiment of the present invention. When the user operates the head unit 1 of the audio system to set the mode of the music player as shown in (a) After entering the selection screen, select the 'Sound Setting' mode in the menu (MENU).

Personal Mode ", which is the seat output mode and the bone conduction mode, on the screen of the 'sound setting' mode selected and displayed as shown in (b), the Bluetooth module of the head unit 1 and the bone conduction Bluetooth pairing for connecting the Bluetooth module built in the speaker 20 is performed.

In FIG. 3 (b), 'Normal Mode' represents a normal speaker output mode using a speaker in a vehicle.

Then, each sheet is selected on the right side 'sheet selection' screen, and a user selects a desired song from among the songs (displayed on the display of the head unit) stored in the memory of the head unit 1 The desired music is selected for each seat as shown in (c), and a music list is created.

In the 'Personal Mode', the music for each seat can be selected through creation of the music list as described above, and the hands-free mode can be selected.

In order to perform music reproduction or hands-free operation, when the operation (music reproduction and hands-free operation) of the head unit 1 of the audio system is selectively operated, the songs in the music list for each seat are selected in order or in an arbitrary order, The respective bone conduction speakers 20 are individually output. In the case of a hands-free call, the hands-free mode is automatically switched to the hands-free mode so that the other party's voice signal is transmitted through the Bluetooth to be outputted through the bone conduction speaker 20 .

Alternatively, when the driver or passenger (passenger) passengers directly manipulate the head unit 1 to directly select a desired piece of music in the music list of each seat, the selected piece of music is transmitted to the bone conduction speaker 20, Music playback can be performed.

4 is a diagram showing a state in which the music selected in the head unit 1 of the audio system and the hands-free call voice are transmitted to the respective sheets via the Bluetooth communication. Personal Mode 'is selected and individual music is selected in each music list for each seat. The music selected in the music list is transmitted to the bone conduction speaker 20 through the Bluetooth communication individually in the head unit 1 Output.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. Forms are also included within the scope of the present invention.

1: Head unit
2: Seat ECU
10: Headrest
11: Hard Part
12: Soft Part
13: stay
20: Bone conduction speaker

Claims (10)

A bone conduction speaker installed in a headrest of each seat in a vehicle so that a driver and a passenger who are seated can hear the sound; And
And a head unit for individually transmitting the selected sound signal to the bone conduction speaker so that the selected sound signal can be outputted by selecting the sound signal to be output for each bone conduction speaker of each seat,
The bone conduction speaker includes:
A headrest built in the soft part and configured to be supported by a hard part inside the soft part, the headrest being configured to include a hard part inside the hard part and a soft part surrounding the hard part, Wherein the headrest stay is installed in an exposed structure in a soft part so as to be in contact with the user's skin and connected to a wire installed along the hollow inside of the headrest stay to receive operating power from the wire.
The method according to claim 1,
Wherein the bone conduction speaker has a Bluetooth module for individually receiving the selected acoustic signal transmitted from the head unit.
The method according to claim 1,
The head unit includes:
A speaker output mode for outputting sound through the vehicle speaker and a seat output mode for transmitting the selected sound signal to the bone conduction speaker so that the individual sound is outputted through the bone conduction speaker can be selected and operated Wherein the vehicle sound output system comprises:
The method according to claim 1,
The head unit includes:
A music list of the selected tunes is generated for each seat when a user selects a desired tuning through operation among the tunes stored in the memory, and an acoustic signal for playing the tunes in the music list in order or in an arbitrary order is generated for each seat And the bone conduction speaker is adapted to individually transmit the sound to the bone conduction speaker.
The method according to claim 1,
The head unit includes:
When a user selects a desired music through operation among the songs stored in the memory, a music list of the selected music is generated for each seat, and when an operation for selecting a music in the music list for each seat is performed, And the sound signal is individually transmitted to the bone conduction speaker of the seat.
The method according to claim 1,
The head unit includes:
And a hands-free mode in which the other party's voice signal at the time of hands-free communication is transmitted to the bone conduction speaker of the driver's seat for output.
delete delete delete The method according to claim 1,
The bone conduction speaker is connected to an integrated seat ECU or an individual seat ECU provided for each seat so as to receive operating power, and the seat ECU is communicably connected to the head unit, And the power supply and operation of the bone conduction speaker can be controlled.


KR1020150094536A 2015-07-02 2015-07-02 Sound output system for vehicle KR101673787B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112887853A (en) * 2021-03-12 2021-06-01 上海思得安环境科技有限公司 Bone sensing directional sound system in automobile
US20230027096A1 (en) * 2021-07-26 2023-01-26 Toyota Jidosha Kabushiki Kaisha Sound system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009143495A (en) * 2007-12-17 2009-07-02 Fujitsu Ten Ltd Acoustic control apparatus
KR20100035195A (en) * 2008-09-26 2010-04-05 주식회사 현대오토넷 Multimedia device for the use of a car with a function for converting image of display device according to location of passenger
KR20150013999A (en) * 2013-07-25 2015-02-06 현대모비스 주식회사 Vehicle Multimedia Sound Output Control System and the Method of
JP2015097682A (en) * 2013-11-19 2015-05-28 クラリオン株式会社 Headrest device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009143495A (en) * 2007-12-17 2009-07-02 Fujitsu Ten Ltd Acoustic control apparatus
KR20100035195A (en) * 2008-09-26 2010-04-05 주식회사 현대오토넷 Multimedia device for the use of a car with a function for converting image of display device according to location of passenger
KR20150013999A (en) * 2013-07-25 2015-02-06 현대모비스 주식회사 Vehicle Multimedia Sound Output Control System and the Method of
JP2015097682A (en) * 2013-11-19 2015-05-28 クラリオン株式会社 Headrest device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112887853A (en) * 2021-03-12 2021-06-01 上海思得安环境科技有限公司 Bone sensing directional sound system in automobile
US20230027096A1 (en) * 2021-07-26 2023-01-26 Toyota Jidosha Kabushiki Kaisha Sound system

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