CN200983665Y

CN200983665Y - Bluetooth Portable Amplified Handset

Info

Publication number: CN200983665Y
Application number: CN 200620061348
Authority: CN
Inventors: 汤正才
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-07-07
Filing date: 2006-07-07
Publication date: 2007-11-28
Anticipated expiration: 2016-07-07

Abstract

The utility model discloses a portable public address earphone of bluetooth, including power amplifier circuit, microphone circuit is connected with bluetooth module, and its characteristics are: portable public address earphone of bluetooth still includes a mechanical type and electronic type change over switch and a control bluetooth module, power amplifier circuit bluetooth module is two way different power amplifier gain circuits, is the handfree earphone mode circuit of bluetooth all the way, and another way is the handheld earphone mode circuit of little volume bluetooth, the two by control bluetooth module control and conversion, electronic type change over switch is connected with two way different efficiency gain circuits, owing to can adopt the handfree earphone mode to carry out arbitrary fast switch over with handheld earphone mode, improves people greatly and uses mobile phone convenience and driving safety nature in the car.

Description

Bluetooth Portable microphonoscope

[technical field]

The utility model relates to a kind of bluetooth Portable microphonoscope.

[background technology]

Along with popularizing of private car and mobile phone, when people drive, run into the situation that need answer mobile phone inevitably, like this for the receiver has brought great inconvenience, also increased the danger in the startup procedure.Existing application blue tooth vehicular hand-free receiver has onboard solved this problem, by bluetooth module with wireless link to mobile phone, and sound is done power amplifier with the hands-free pattern that amplifies, allow directly talk of user.

But, in use also there is certain drawback in this technology, Che Nei has his man-hour answering some secret phones as the receiver, just need become back general handset mode to answer just and can reach secret demand by hands-free microphonoscope mode switch, so in use just need be in the hands-free pattern and change between the two of amplifying with answering modes of mobile phone (hand-held receiver), cause very big trouble, and had a strong impact on traffic safety and convenience.

[utility model content]

The purpose of this utility model provides a kind ofly can carry out the bluetooth Portable microphonoscope that switches fast arbitrarily in hand-free receiver pattern and hand-held handset mode.

In order to achieve the above object, the utility model is by the following technical solutions: a kind of blue tooth vehicular hand-free receiver, comprise power amplifier, microphone circuit, described microphone circuit is connected with bluetooth module, it is characterized in that: described car handsfree receiver also comprises a mechanical type and electronic type diverter switch and a control bluetooth module, described power amplifier bluetooth module is the different power amplifier gain circuitries of two-way, one the tunnel is bluetooth handsfree handset mode circuit, another road is the hand-held handset mode circuit of small volume bluetooth, the two is by common control of control bluetooth module and conversion, and described electronic type diverter switch is connected with two-way different efficacies gain circuitry.

Described electronic switch is connected with resistance to reduce output volume.

Adopt the utility model of above technical scheme,, improve people greatly and in car, use mobile phone convenience and travel safety owing to can adopt hand-free receiver pattern and hand-held handset mode to carry out switching fast arbitrarily.

[description of drawings]

Fig. 1 is the utility model principle and device schematic diagram;

Fig. 2 is the utility model line map.

[embodiment]

The utility model will be further described below in conjunction with accompanying drawing:

As Fig. 1, shown in Figure 2, a kind of bluetooth Portable microphonoscope, comprise the power amplifier bluetooth module, microphone circuit, mechanical type and electronic type diverter switch, this switch adopts the LTC4054 model, described power amplifier is the different power amplifier gain circuitries of two-way, the power amplifier bluetooth module that it is furnished with a model is the TPA2000DIP model, one the tunnel is bluetooth handsfree handset mode circuit, another road is the hand-held handset mode circuit of small volume bluetooth, the two is by common control bluetooth module U7 control and conversion, this bluetooth module adopts the BC03-EXT-FASH model, it is by XC6204B332MR model power supply bluetooth module group U8 power supply, the electronic type diverter switch is connected with two-way different efficacies gain circuitry in order to carry out switching fast arbitrarily in hand-free receiver pattern and hand-held handset mode, and this electronic switch also is connected with resistance R 6 330R to reduce output volume, and entire circuit is furnished with the charge controller that model is ADG736 and starts button SW4.

The work of bluetooth module U7 is:

(1) revise firmware program in the bluetooth module, and the collocation mechanical type excites different mode of operations.

(2) cooperate different audio frequency power amplifier circuit gains recently to obtain different loudspeaker volumes.

(3) controlling whole voice band line with software parameter feedbacks and signal to noise ratio.

(4) control the sensitivity of microphone of different mode of operations with software parameter.

The course of work is:

When pressing the SW4 button in the time of one second, bluetooth Portable microphonoscope is converted to hand-held handset mode by microphonoscope, U7 bluetooth module P32 exports high potential, thereby control U1 electronic switch is a conducting state, reduce output volume through R6 330R resistance, the inner startup of simultaneously blue bud module U7 handed the handset mode parameter, reduces the MIC sensitivity of microphone, changes duplex conversation back coupling control so that reach best communication effect.

When pressing the SW4 button in the time of three seconds, detect this three seconds signals by the U7 bluetooth module, thereby turn-off U7 bluetooth module PIN13, PIN14 (MIC-N (negative pole)/MIC-P (positive pole)), and light LED and play mute function.

When using the blue tooth vehicular Portable microphonoscope of present embodiment, under the normal condition with the hands-free mode operating that amplifies, when the people around if those who answer does not think hears the other side's dialog context, can pick up a receiver and by on ﹠ off switch (SW4), receiver just can switch to small volume power amplifier circuit immediately this moment, and in bluetooth module U7, reduce the sensitivity at Mike peak (MIC), adjust back coupling control simultaneously and reach best two merit communication effects with Automatic Program.So, just this bluetooth Portable microphonoscope can be used when becoming the regular phone receiver, when pressing receiver switch (SW4) again, can return to the pattern of amplifying again, need not mobile phone is taken out use.

Adopt the utility model of above technical scheme, arrive mobile phone by bluetooth module with wireless link, and sound is done power amplifier with the hands-free pattern that amplifies, allow directly talk of user, and adopt hand-free receiver pattern and hand-held handset mode to carry out switching fast arbitrarily, therefore improving people greatly uses mobile phone convenience and travel safety in car.Simultaneously this product also can be used as the desktop hands free telephone and uses, and allows the user can the operational computations machine when receiving calls, and writes, or does other thing.

Should be noted that the utility model is not limited to the physical circuit module combinations and the application of the foregoing description; can design different circuit module combinations as required; and also can use the place that other needs, it all drops in the protection range of the present utility model again.

Claims

1. A bluetooth portable loudspeaker receiver, comprising a power amplifier circuit, a microphone circuit, the microphone circuit is connected to the bluetooth module, characterized in that: the vehicle hands-free receiver also includes a mechanical and electronic switch and a Control the bluetooth module, the power amplifier circuit bluetooth module is two different power amplifier gain circuits, one is a bluetooth hands-free handset mode circuit, the other is a low-volume bluetooth hand-held handset mode circuit, the two are controlled and converted by the control bluetooth module , the electronic switch is connected to two different power gain circuits.

2. A Bluetooth portable speakerphone according to claim 1, wherein the model of the Bluetooth module is BC03-EXT-FASH.

3. A bluetooth portable loudspeaker receiver according to claim 1, characterized in that said electronic switch is connected with a resistor to reduce the output volume.