CN101102356A - Hand-free device - Google Patents
Hand-free device Download PDFInfo
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- CN101102356A CN101102356A CNA2006100863196A CN200610086319A CN101102356A CN 101102356 A CN101102356 A CN 101102356A CN A2006100863196 A CNA2006100863196 A CN A2006100863196A CN 200610086319 A CN200610086319 A CN 200610086319A CN 101102356 A CN101102356 A CN 101102356A
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Abstract
In invention can be attached to a mobile phone at calling state in order to realize the hands-free function of mobile phone. The device also comprises a microphone used for collecting and sending out user's voice; and a supersonic wave loud speaker used for receiving the modulated supersonic signals from opposite side, and enhancing and outputting the supersonic signals.
Description
Technical field
The present invention relates to hands-free device, relate in particular on car handsfree, can produce the hands-free device of the non-linearity audio amplifier loud speaker of bigger volume.
Background technology
Recently, along with popularizing rapidly of mobile phone, in automobile, use the situation of mobile phone also more and more.Under the situation that the driver converses by mobile phone, just need provide a kind of mobile phone hands-free function that does not hinder safe driving in the vehicle operating process.
Fig. 1 is the pie graph of hands-free device of the prior art.
With reference to Fig. 1, under the situation about conversing,, pass to the other side in the conversation by mobile phone 20 again by being installed in the sound of the microphone 11 input drivers on the vehicle at the other side's Inbound Calls.Otherwise the other side's sound sends the user to by output amplification portion (not having diagram) and the sound speaker 13 that drives loud speaker successively.Therefore, the driver utilizes the hands-free device 10 that is connected in above-mentioned mobile phone 20, just can realize conversation in driving procedure safely.
But, when above-mentioned existing hands-free device is connected with common sound speaker at the handset earphone jack, owing to only conversation voice is amplified, will reduce speech quality, passing to the other side by microphone once more by the conversation sound of loud speaker output simultaneously, will echogenicity be whistle (hawling) phenomenon.
In addition, except that the driver, under the situation that has other people to take, dialog context can be heard that private conversation's content is disclosed by other people, the perhaps frequent business secret of leaking.Therefore, when in car, having other people to take, in fact just can not use hands-free device.If must carry out urgency traffic in driving, this can constitute greatly to become to coerce to safe driving.
Summary of the invention
The present invention proposes for addressing the above problem just, and purpose is to provide a kind of hands-free device that produces the non-linearity audio amplifier loud speaker of bigger volume.
Another object of the present invention is to be to provide a kind of can keep a kind of hands-free device of secret conversation again to taking advantage of personnel not constitute obstruction.
To achieve these goals, the present invention is to be connected with mobile phone in the mobile phone communication state and can to realize comprising the hands-free device conversed: receive the microphone to partner transmission user voice with the other side; Signal and above-mentioned standard ultrasonic that the other side's sound that is received by mobile phone in standard ultrasonic is modulated are carried out the also ultrasonic speaker of output of amplification.
In addition, above-mentioned ultrasonic speaker is made of following components: the audible sound generating unit of exporting with the voice signal of audible sound by the other side's sound of mobile phone reception; Can produce the standard ultrasonic generating unit of standard ultrasonic; In the standard frequency of the output ultrasonic wave band of above-mentioned standard ultrasonic generating unit, the modulation portion of modulation and output audible sound generating unit output sound; Receive according to the output sound signal of above-mentioned modulation portion modulation and the signal of above-mentioned standard ultrasonic generating unit, and the amplification portion that carries out amplification and output by certain standard; The formations such as supersonic generator of the voice signal of the above-mentioned amplification of output foundation portion amplification.
The present invention is by powerful directional ultrasonic carrying the other side's sound, and signal and the above-mentioned ultrasonic wave to modulation carries out amplification simultaneously, and exports by ultrasonic speaker.See through air, produce Composite tone according to the nonlinear characteristic of air.Because the frequency difference of these two kinds of signals just can make the user hear the sound that directionality is powerful.Therefore, dialog context just can not heard by other people.
In addition, because the powerful sound wave of directionality is arranged, can not produce the whistle phenomenon even be input to microphone yet.
In addition, because the very thin thickness of loud speaker also can improve the service efficiency in space.
Description of drawings
Fig. 1 is the pie graph according to the hands-free device of prior art;
Fig. 2 is the pie graph of hands-free device of the present invention;
Fig. 3 is the pie graph of hands-free device of the present invention.
The symbol description of major part in the accompanying drawing
20: mobile phone 30: hands-free device
31: microphone 33: ultrasonic speaker
41: audible sound generating unit 43: the standard ultrasonic generating unit
45: modulation portion 47: amplification portion
49: supersonic generator
Embodiment
Below with reference to accompanying drawings embodiments of the invention are elaborated.
In the following description, for the ease of understanding operation of the present invention and usable condition, only the part to necessity describes, and the explanation of the aim part of the present invention of disengaging is in addition omitted.Therefore, the spy please be careful.
In the following description, more fully understand for the present invention there being one, only the privileged site to hands-free device of the present invention describes, and for not belonging to specific features of the present invention, the related personnel all knows in this technical field, therefore no longer describes in detail.
Fig. 2 is the pie graph of hands-free device of the present invention.
With reference to Fig. 2, the hands-free device 30 that is connected with mobile phone 20 is made of microphone 31 and ultrasonic speaker 33.Above-mentioned microphone 31 is identical with microphone of the prior art 31, can receive driver's sound, transmits to mobile phone 20 simultaneously.Above-mentioned mobile phone 20 transmits the driver's who imports by above-mentioned microphone 31 sound to the other side.
In addition, above-mentioned ultrasonic speaker 33 is exported the other side's sound in the conversation in air, and this ultrasonic speaker 33 constitutes with reference to the device of Fig. 3, below its operation and usable condition is described.
Fig. 3 is the pie graph of hands-free device of the present invention.Among Fig. 3, microphone 31 is the devices that receive the user voice that uses mobile phone 30, for aim of the present invention is described, omits in this explanation.
With reference to Fig. 3, at first audible sound generating unit 41 is the voice output of the other side's sound that receives by mobile phone 20 with range of audibility.At this moment, standard ultrasonic generating unit 43 produces the standard ultrasonic of the output sound signal carrier wave of above-mentioned audible sound generating unit 41, and to modulation portion 45 and 47 outputs of amplification portion.
Above-mentioned modulation portion 45 is being carried the voice signal of above-mentioned audible sound generating unit 41, and the ultrasonic wave that establishing criteria ultrasonic wave generating unit 43 produces becomes carrier wave to the ultrasonic wave of above-mentioned standard ultrasonic generating unit 43 outputs.
The output signal of above-mentioned standard ultrasonic generating unit 43 and above-mentioned modulation portion 45 is imported to the amplification portion 47 of next end, and with after certain standard amplification, by supersonic generator 49 outputs.
The output signal of above-mentioned supersonic generator 49 sees through air, signal after the other side's audible sound modulation that receives according to the output ultrasonic wave of the standard ultrasonic generating unit 43 of the nonlinear characteristic amplification of air with to mobile phone in standard ultrasonic 20 synthesizes, and generates synthetic (combination) audio frequency.Because the frequency of these two kinds of signals there are differences, the user just can hear the sound wave that directionality is very strong.
Above-mentioned explanation of the present invention just describes specific embodiment.Those skilled in the art can carry out various change fully in the scope that does not depart from the technology of the present invention thought.Therefore, technical scope of the present invention is not limited to the content of specification, must determine its technical scope according to interest field.
Claims (2)
1, a kind of hands-free device is characterized in that:
In the mobile phone communication state, being connected and can realizing the hands-free device conversed with the other side with mobile phone,
Also comprise: receive the microphone that transmits user voice to partner;
Signal and above-mentioned standard ultrasonic that the other side's sound that is received by mobile phone in standard ultrasonic is modulated are carried out the also ultrasonic speaker of output of amplification.
2, hands-free device as claimed in claim 1 is characterized in that:
Above-mentioned ultrasonic speaker comprises: the audible sound generating unit of exporting with the voice signal of audible sound by the other side's sound of mobile phone reception;
Can produce the standard ultrasonic generating unit of standard ultrasonic;
In the standard frequency of the output ultrasonic wave band of above-mentioned standard ultrasonic generating unit, the modulation portion of modulation and output audible sound generating unit output sound;
Receive according to the output sound signal of above-mentioned modulation portion modulation and the signal of above-mentioned standard ultrasonic generating unit, and the amplification portion that carries out amplification and output by certain standard;
The supersonic generator of the voice signal of the above-mentioned amplification of output foundation portion amplification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100863196A CN101102356A (en) | 2006-07-07 | 2006-07-07 | Hand-free device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100863196A CN101102356A (en) | 2006-07-07 | 2006-07-07 | Hand-free device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101102356A true CN101102356A (en) | 2008-01-09 |
Family
ID=39036440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100863196A Pending CN101102356A (en) | 2006-07-07 | 2006-07-07 | Hand-free device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101102356A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105515682A (en) * | 2015-12-01 | 2016-04-20 | 惠州Tcl移动通信有限公司 | Method and system for sending and receiving ultrasonic wave by headphone jack |
| CN109155807A (en) * | 2016-05-03 | 2019-01-04 | 萨罗尼科斯贸易与服务人有限公司 | Device and method for adjusting acoustical signal |
-
2006
- 2006-07-07 CN CNA2006100863196A patent/CN101102356A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105515682A (en) * | 2015-12-01 | 2016-04-20 | 惠州Tcl移动通信有限公司 | Method and system for sending and receiving ultrasonic wave by headphone jack |
| CN105515682B (en) * | 2015-12-01 | 2018-07-13 | 惠州Tcl移动通信有限公司 | The method and system realized transmitting using earphone interface, receive ultrasonic wave |
| CN109155807A (en) * | 2016-05-03 | 2019-01-04 | 萨罗尼科斯贸易与服务人有限公司 | Device and method for adjusting acoustical signal |
| CN109155807B (en) * | 2016-05-03 | 2021-10-26 | 萨罗尼科斯贸易与服务一人有限公司 | Device and method for conditioning an acoustic signal |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |