CN2631854Y

CN2631854Y - No lift device of mobile telephone on board

Info

Publication number: CN2631854Y
Application number: CN 03268184
Authority: CN
Inventors: 胡卓兴
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-07-31
Filing date: 2003-07-31
Publication date: 2004-08-11
Anticipated expiration: 2013-07-31

Abstract

The utility model relates to a mobile telephone vehicle carrying no-holding device, especially relates to a mobile telephone no-holding device used during driving. Purpose of the utility model is to provide a mobile telephone vehicle carrying no-holding device that transmits signal by earphone plughole of the mobile telephone, has simple and reliable structure and convenient and easy use. The technical plan used by the utility model is: The device is connected with a plug of the earphone plughole of the mobile telephone, a main machine and an infrared earphone, outer part of the main machine is used as bracket of the mobile telephone, a power supply, a microphone, a loudspeaker, an internal circuit that is used for converting signal and sound of the mobile telephone earphone, and an infrared earphone are fixed in the main machine, a battery and an infrared demodulation receiving circuit are fixed in the infrared earphone for receiving infrared, demodulating and recovering infrared into audio signal, and a amplifying circuit is used for amplifying audio signal after demodulation and outputting sound by the earphone. The utility model is suitable for different types of mobile telephones with earphone plughole.

Description

The vehicular telephone on-vehicle hands-free device

Affiliated technical field

The utility model relates to a kind of vehicular telephone on-vehicle hands-free device, the vehicular telephone hands-free device that uses during especially a kind of driving.

Background technology

At present, along with the fast development of mobile communication, people need use vehicular telephone when driving situation is also more and more, and the user to be to use wired earphone still directly to hold vehicular telephone with hand be not easily, but also influential driving safety.The vehicular telephone on-vehicle hands-free device arises at the historic moment and uses also increasingly extensive like this, mostly be to come transmission signals at these wherein most of prior mobile phone on-vehicle hands-free devices by the charging inlet of vehicular telephone, but because the brand and model of vehicular telephone is various, the charging inlet specification is disunity very, cause the extremely inconvenience in the use, and damage vehicular telephone easily, and the vehicular telephone on-vehicle hands-free device that has adopts wireless mode and mobile phone transmission signal, increased emission like this, acceptor circuit, not only increased part, also make entire circuit become complicated, reduce reliability.

Summary of the invention

The purpose of this utility model, it is the little situation of earphone jack difference that all has the vehicular telephone of earphone jack and different brands model at the present vehicular telephone overwhelming majority, a kind of earphone jack transmission signals by vehicular telephone is provided, simple and reliable for structure, the on-vehicle hands-free device of vehicular telephone easily easy to use.

The technical scheme that the utility model adopted is: the vehicular telephone on-vehicle hands-free device, include a plug that connects the vehicular telephone earphone jack, one main frame, one Infrared earphone, its main frame outside is as the vehicular telephone carriage, has power supply in its main frame, one microphone, one loud speaker, one a internal circuit and an Infrared earphone in order to vehicular telephone headset signal and sound are changed, a battery and an infrared demodulate reception circuit are arranged in its Infrared earphone, be reduced to voice signal in order to receiving infrared-ray and demodulation, one amplifying circuit then passes through the earphone output sound in order to the voice signal after the amplification demodulation.

Internal circuit in the main frame includes:

One vehicular telephone interface switching control circuit is discerned conversion in order to the earphone signal to the vehicular telephone of different systems;

One incoming signal amplifying circuit is in order to amplification input signal;

The one acoustic control control circuit of raising one's voice, the voice signal that picks up in order to voice signal and microphone to the vehicular telephone input filters, decays, and twin-channel signal is handled in case the phase mutual interference;

One volume control circuit is in order to regulate the output volume of earphone or loud speaker;

One power amplification circuit carries out power gain in order to the voice signal to the vehicular telephone input;

One earphone speaker commutation circuit is in order to switch between earphone speaker to change the way of output;

One infrared modulation transmission circuit will be in order to launching with the infrared ray form through the voice signal modulation back of the input of the vehicular telephone after the power gain;

One microphone amplifying circuit is in order to amplify the voice signal that microphone picks up.

And power supply of the present utility model, an available power taking plug connects the power supply on the automobile cigarette lighter, increases power circuit on the internal circuit simultaneously, in order to supply with host power supply behind the power supply seamless that will connect from automobile cigarette lighter.

As to further improvement of the utility model, can on main frame, increase by a vehicular telephone charge circuit and a charging inlet, make things convenient for vehicular telephone to charge onboard.And can on main frame, increase by an Infrared earphone charge circuit and a charging inlet.Can also be at inner chargeable battery and the rechargeable battery circuit of increasing of main frame.

The beneficial effects of the utility model are: because the utility model is by the earphone jack transmission signals of vehicular telephone, thereby be applicable to the various vehicular telephones that have the different systems of earphone jack, it is simple in structure, easy to use, provide two kinds of way of outputs of loud speaker and Infrared earphone all to look particular case simultaneously and select, when using Infrared earphone, because transmission distance is 1 meter for the user, can only near the automobile head, just can receive signal, satisfy the safe and secret needs of user.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiments:

Fig. 1 is the scheme drawing of on-vehicle hands-free device;

Fig. 2 is the block scheme of on-vehicle hands-free device.

The specific embodiment

The described vehicular telephone on-vehicle hands-free device of Fig. 1 includes the plug 1 that the plug 7, a main frame 3, the Infrared earphone 9, that connect the vehicular telephone earphone jack are inserted in power taking on the automobile cigarette lighter.The carriage 8 of vehicular telephone is made in the main frame outside, also have the charging socket 11 of vehicular telephone and the charging jack 39 and the charge switch 4 of infrared earphone above, inside has a microphone 2, a loud speaker 12, one internal circuit in order to vehicular telephone headset signal and sound are changed, one infrared demodulate reception circuit 32 is arranged in the Infrared earphone, be reduced to voice signal in order to receiving infrared-ray and demodulation, one amplifying circuit 33 then passes through the earphone output sound in order to the voice signal after the amplification demodulation.

When using this device, power taking plug 1 is inserted automobile cigarette lighter, power connection, power light 15 is bright, can start working.Switch the vehicular telephone of different systems if desired, then can press standard switching push button 5, the different colours of standard indicator lamp 14 is then represented different systems.And when needs charge to vehicular telephone, then can press the vehicular telephone charging to close button 6, charging indicator light 13 is bright, then can charge to vehicular telephone.

On the internal circuit in the main frame, power circuit 35 is arranged, also can connect vehicular telephone charge circuit 34 and Infrared earphone charge circuit 36 simultaneously, be respectively vehicular telephone and Infrared earphone provides charge power supply in order to the main frame power supply.

Acoustic control on the internal circuit control circuit 18 of raising one's voice, comprise filter 19, receiving attenuation device 20, transmission attenuation device 25, amplifier 23, attenuation controller 31, background noise monitor 22, level controller 24, automatic gain controller 21 in it, background noise monitor 22, level controller 24 in order to monitor two in the passage signal and compare, in order to avoid the phase mutual interference.

When needs use phone, press incoming call and answer switch 38, handle by the acoustic control control circuit 18 of raising one's voice after the incoming signal amplifying circuit on the internal circuit 17 amplifies from the voice signal of vehicular telephone input, through filter 19, attenuator 20 filters decay and is output into sound after volume control circuit 26 and power amplification circuit 27 backs switch to loud speaker by earphone speaker commutation circuit 28, perhaps switch to infrared modulation transmission circuit 29 and be modulated into the infrared ray form and launch by earphone speaker commutation circuit 28, again by the infrared demodulate reception circuit on the Infrared earphone 32 receive the back demodulation be reduced to voice signal by amplifying circuit 33 power gains after by the earphone output sound.

And the motorist is when speaking, convert voice signal after its sound is picked up by the microphone in the main frame to and be amplified into acoustic control by microphone amplifying circuit 31 and raise one's voice in the control circuit 18, be transported on the vehicular telephone by earphone jack then and launch through the amplification that decays of transmission attenuation device 25, amplifier 23.

Claims

1, a kind of vehicular telephone on-vehicle hands-free device, include plug, a main frame, an Infrared earphone that connects the vehicular telephone earphone jack, it is characterized in that: its main frame outside is as the vehicular telephone carriage, has power supply, a microphone, a loud speaker, one internal circuit and the Infrared earphone in order to vehicular telephone headset signal and sound are changed in its main frame; A battery and an infrared demodulate reception circuit are arranged in its Infrared earphone, be reduced to voice signal in order to receiving infrared-ray and demodulation, an amplifying circuit then passes through the earphone output sound in order to the voice signal after the amplification demodulation.

2, vehicular telephone on-vehicle hands-free device according to claim 1 is characterized in that: the internal circuit in its main frame includes:

One vehicular telephone interface switching control circuit is discerned switching in order to the signal to the mobile phone earphone of different systems;

3, vehicular telephone on-vehicle hands-free device according to claim 1 and 2 is characterized in that: have the vehicular telephone incoming call to answer switch on its main frame.

4, vehicular telephone on-vehicle hands-free device according to claim 1 and 2 is characterized in that: vehicular telephone standard change-over switch is arranged on its main frame.

5, vehicular telephone on-vehicle hands-free device according to claim 3 is characterized in that: go up source switch and power light in addition on its main frame.

6, vehicular telephone on-vehicle hands-free device according to claim 3, it is characterized in that: also have a power taking plug on its main frame, in order to joining power from automobile cigarette lighter, supply with host power supply after also having power supply seamless circuit in order to the power supply seamless that will connect from automobile cigarette lighter on its main frame internal circuit; Also have the Infrared earphone charging inlet on the main frame, also have the Infrared earphone charge circuit on the internal circuit in order to charge to Infrared earphone.

7, vehicular telephone on-vehicle hands-free device according to claim 6, it is characterized in that: on the internal circuit in its main frame, also have a vehicular telephone charge circuit in order to charging to battery of mobile telephone after the rectification of host power supply seamless, on the outside vehicular telephone carriage of main frame, also have a vehicular telephone charging inlet.

8, vehicular telephone on-vehicle hands-free device according to claim 7 is characterized in that: also have vehicular telephone charge switch and charging indicator light on its main frame.

9, vehicular telephone on-vehicle hands-free device according to claim 6, it is characterized in that: also chargeable battery can be housed in its main frame, also have a chargeable battery charge circuit on its internal circuit in order to move the chargeable battery charging with giving after the rectification of host power supply seamless.

10, vehicular telephone on-vehicle hands-free device according to claim 9 is characterized in that: also have chargeable battery charge switch and charging indicator light on its main frame.