CN1233196C - It has a hands-free handset device that provides mobile phones and external Bluetooth modules at the same time - Google Patents

Abstract

The invention relates to a hand-free earphone device which can provide mobile phone and external hanging blue tooth module, especially a hand-free earphone device which can provide multiple mobile phones and use in single phone, to avoid the inconvenience of using multiple mobile phones simultaneously; the invention mainly utilizes a microprocessor, an interface conversion circuit, an input interface, a Bluetooth module, a sound processing circuit, a loudspeaker amplifying and controlling circuit, a microphone amplifying circuit, a car sound controlling circuit and a charging circuit, etc. to match with the loudspeaker and the microphone to form a hand-free receiver device, so as to provide a hand-free receiver device which can be used for more than one mobile phone input at the same time.

Description

It has a hands-free handset device that provides mobile phones and external Bluetooth modules at the same time

technical field

The invention relates to a hands-free handset device, in particular to a hands-free handset device provided with a mobile phone and an external bluetooth module.

Background technique

Generally, the hands-free hands-free device for a vehicle can only be plugged into one mobile phone. If the user has a mobile phone or a bluetooth mobile phone at the same time, the user can only be forced to choose one of the mobile phones and the Bluetooth mobile phone. Car hands-free listening devices are plugged in and used, thus allowing users to miss many important calls while driving. For this reason, many European and American cars are equipped with mobile phones on cars (referred to as car phones). It can provide the SIM card of the mobile phone to be inserted in the car so that the owner can still use the mobile phone to make calls in the car. However, this kind of car is also limited to the use in the car, and the user still needs to prepare another mobile phone for It is used when getting off the car, but the inconvenience of changing the SIM card often makes users feel troublesome and dislike it.

In view of the lack of the use of the above customary hands-free handset, the inventor of this case actively researches and improves, and only has the invention of this case after many reforms.

The technical problem to be solved by the present invention is to provide an in-line

Under the premise of car safety, users can use multiple mobile phones at the same time, but only need a hands-free handset device to complete hands-free calls. It also provides mobile phones and external Bluetooth modules. Hands-free handset.

Contents of the invention

The hands-free hands-free device provided by the present invention, which simultaneously provides mobile phones and external bluetooth modules, is realized by the following technical solutions.

The present invention includes: a microprocessor, leading the operation of each unit circuit of the device; an input interface, connected with a mobile phone, receiving a signal transmitted by the mobile phone, and outputting the signal to the microprocessor, wherein the input interface at least includes A user input interface and at least one interface providing mobile phone signal input; an interface conversion circuit, which receives the signal transmitted by the input interface, is bidirectionally connected to the input interface, and is controlled by the microprocessor control and convert the signal input by the mobile phone; a bluetooth module is wirelessly connected with the bluetooth mobile phone, receives the signal sent by the bluetooth mobile phone, and transmits the signal to the microprocessor; and the bluetooth module is connected with the bluetooth mobile phone The interface conversion circuit is bidirectionally connected; a microphone amplifier circuit is connected to the microphone, and the voice signal input through the microphone is processed and amplified and sent to a voice processing circuit for adjusting the output and output voice, and the voice processing circuit receives the micro-processing The signal transmitted by the device is bidirectionally connected with the interface conversion circuit; a loudspeaker amplification and control circuit is controlled by the microprocessor, receives the sound signal from the sound processing circuit, amplifies the signal and controls the loudspeaker to play the sound come out.

It also includes a car audio control circuit, which receives the control signal from the microprocessor and sends the control signal to the car audio to control the car audio to mute or temporarily shut down.

It also includes a charging circuit controlled by the microprocessor and connected with the input interface and the bluetooth module to provide the power required by the mobile phone and charge the battery.

The bluetooth module includes: a band-pass filter to filter signal noise and connect to the I/O interface; a radio frequency circuit connected to the digital signal processor and the I/O interface to provide 2.4G radio waves so that the output signal can be detected The Bluetooth transceiver device on the mobile phone terminal receives; a memory, connected to the digital signal processor and the microprocessor, used to temporarily store the signal data of the processor or the digital signal processor; a processor, connected to the digital signal processor, the memory and the input and output an interface for processing signal data; a digital signal processor for connecting processors, radio frequency circuits, memory and an input-input interface, and converting signal data into digital signals; an input-output interface for transmitting signal output and input, and communicating with RF circuit, processor connection.

Wherein the interface for signal input of the mobile phone is a jack.

The signal input interface of the mobile phone is a signal line.

The present invention mainly utilizes a microprocessor, an interface conversion circuit, an input interface, a bluetooth module, a sound processing circuit, a speaker amplification and control circuit, a microphone amplification circuit, a car audio control circuit and a charging circuit, etc. , with the hands-free handset device composed of speakers and microphones, it has the convenience of providing multiple mobile phones plugged into one hands-free handset device at the same time.

Advantage of the present invention is:

The structure is simple and easy to use, which effectively solves the problem that the hands-free handset can only be selected in a single way, so as to provide users with a more convenient and practical hands-free hands-free device.

Below enumerate specific embodiment and cooperate accompanying drawing, introduce composition, feature and effect of the present invention in detail:

Description of drawings

Fig. 1 is a system block diagram of the present invention.

Fig. 2 is a schematic diagram of a specific embodiment of the present invention.

Fig. 3 is a schematic diagram of the Bluetooth module of the present invention.

Detailed ways

First please refer to shown in Fig. 1, be the system block diagram of the present invention 1, mainly by a microprocessor 11, an interface conversion circuit 12, an input interface 131, a bluetooth module 2, a sound processing circuit 14, a Speaker amplification and control circuit 15, a microphone amplification circuit 16, a car audio control circuit 17 and a charging circuit 18 are composed of circuits such as a speaker S and a microphone M, wherein:

Microprocessor 11 is to lead the operation of each unit circuit of the device;

The interface conversion circuit 12, controlled by the microprocessor 11, provides signals input by different mobile phones T1 and T2, which can be converted into signals that can be processed by the present invention 1 through the interface conversion circuit 12, and used for the back end;

The input interface 131, controlled by the microprocessor 11, includes at least one user input interface, which generally refers to the volume control, switch control, switching control, etc., which can be set by the user; the other is The interface that provides the input of the mobile phone can be jack, signal line or other forms of interface;

Bluetooth module 2; it includes:

Sound processing circuit 14, this circuit is controlled by microprocessor 11, handles the adjustment of output and input voice, and generally refers to sound adjustments such as eliminating noise, eliminating echo, increasing or decreasing the amplitude;

Speaker amplification and control circuit 15, under the control of microprocessor 11, receives the sound signal from sound processing circuit 14, amplifies the signal and controls the speaker S to dial out the sound;

The microphone amplifying circuit 16 processes and amplifies the voice signal input through the microphone M for back-end use;

The car audio control circuit I7, controlled by the microprocessor 11, is used to control the car audio C to mute or temporarily start it;

The speaker S is actuated by the speaker control and amplifier circuit 15, which is the existing speaker of the car audio system, and can also be an external speaker;

The charging circuit 18, controlled by the microprocessor 11, provides the power required by the mobile phones T1 and T2 and charges their batteries;

By the composition of above-mentioned components, as shown in Fig. 2, it is the schematic diagram of the specific embodiment of the present invention, if the user only has a mobile phone, he can use the mobile phone through the input interface 131 or The bluetooth module 2 is connected with the present invention 1, and by the control of the microprocessor 11, when the mobile phone calls, the car audio control circuit 17 promptly makes the car audio C mute or temporarily shut down, so that the incoming signal of the other party can be passed through The interface conversion circuit 12 encodes its signal into an acceptable signal of the present invention, and after being processed by the sound circuit 14 and the loudspeaker control and amplifying circuit 15, the sound output of the other party is output by the loudspeaker S; otherwise, the user can use the microphone M Input voice message, so as to achieve the purpose of speakerphone.

If the user wants to use a mobile phone and a Bluetooth mobile phone at the same time, the mobile phone T1 can be connected to the present invention 1 through the input interface 13, and the Bluetooth mobile phone T2 can receive the Bluetooth mobile phone through the Bluetooth module 2 of the present invention. The bluetooth wireless signal of the phone T2; when talking on a stand-alone phone, the talking method is the same as the above, but if one of the mobile phones T1 is talking and another bluetooth mobile phone T2 calls again, the user can use the present invention to select the following four model:

1. The microprocessor 11 can control the sound processing circuit 14, the input interface 131, and the bluetooth module 2 to output a warning message of another incoming call to the mobile phone T1, and the warning message can be a light signal, a sound or a voice reminder The user, the user can still continue to talk with the original caller until the original caller hangs up, and the present invention will automatically transfer another incoming call to the user.

2, the microprocessor 11 can control the sound processing circuit 14 and the input interface 131, the bluetooth module 2, pick up the incoming call automatically, and utilize the sound processing circuit 14 to output a voice prompt to the caller (for example: I'm sorry, we are currently talking Please wait a moment or call again later), and then output a warning message of an incoming call to the user.

3. If a certain party's incoming call 2 is waiting and the line is disconnected before the user answers it, then the present invention can utilize the sound processing circuit 14 to output a warning message to the user to inform the user that there is a final incoming call.

4. When the user disconnects all incoming calls, the microprocessor 11 will control the car audio control circuit.

A radio frequency circuit 222 is to connect the digital signal processor 225 and the I/O interface 226 to provide 2.4G radio waves, so that the output signal can be connected to a memory 223 by the bluetooth transceiver device (not shown in the figure) at the mobile phone end, which is connected to The digital signal processor 225 and the microprocessor 224 are used for temporarily storing the signal data of the processor 224 or the digital signal processor 225;

A processor 224 is connected to a digital signal processor 225, a memory 223 and an input/output interface 226 for processing signal data:

A digital signal processor 225 is connected to the processor 224, the radio frequency circuit 222, the memory 223 and the I/O interface 226, and converts the signal data into a digital signal; and

An I/O interface 226 , which transmits the output and input of signals, and is connected with the radio frequency circuit 222 and the processor 224 .

The bluetooth module 2 further includes a removable cassette, the user can update the firmware by replacing the cassette, so that the mobile phone supported by the present invention 1 can be easily updated and expanded.

Claims (6)

1. A hands-free hands-free device that simultaneously provides a mobile phone and an external bluetooth module, and is characterized in that it includes: A microprocessor, leading the operation of each unit circuit of the device; An input interface, connected with the mobile phone, receiving the signal transmitted by the mobile phone, and outputting the signal to the microprocessor, wherein the input interface includes at least one user input interface and at least one interface for providing signal input of the mobile phone; An interface conversion circuit, receiving the signal transmitted by the input interface, bidirectionally connected with the input interface, and under the control of the microprocessor, converts the signal input by the mobile phone; A bluetooth module, wirelessly connected with the bluetooth mobile phone, receives the signal sent by the bluetooth mobile phone, and transmits the signal to the microprocessor; and the bluetooth module is bidirectionally connected with the interface conversion circuit; A microphone amplifying circuit, connected to the microphone, amplifies the voice signal input through the microphone and sends it to a voice processing circuit for adjusting the output and output voice, and the voice processing circuit receives the signal transmitted by the microprocessor, And bidirectionally connected with the interface conversion circuit; A speaker amplification and control circuit, controlled by the microprocessor, receives the sound signal from the sound processing circuit, amplifies the signal and controls the speaker to play the sound. 2. The hands-free hands-free device for mobile phones and external bluetooth modules according to claim 1, characterized in that it further includes a car audio control circuit, which receives the control signal from the microprocessor and transmits the control signal To the car stereo, to control the car stereo to mute or temporarily shut down. 3. The hands-free hands-free device for mobile phones and external bluetooth modules according to claim 1, characterized in that it further includes a charging circuit controlled by a microprocessor and connected to said input interface and Bluetooth module to provide the power required by the mobile phone and charge its battery. 4. The hands-free hands-free device for mobile phones and external Bluetooth modules according to claim 1, wherein the Bluetooth module includes: A pass filter to filter the noise of the signal and connect to the input and output interface; A radio frequency circuit, connected to the digital signal processor and the I/O interface, to provide 2.4G radio waves, so that the output signal can be received by the Bluetooth transceiver device at the mobile phone end; A memory, connected to the digital signal processor and the microprocessor, for temporarily storing the signal data of the processor or the digital signal processor; A processor, connected to a digital signal processor, a memory, and an input/output interface for processing signal data; A digital signal processor, connected to the processor, radio frequency circuit, memory and I/O interface, and converts signal data into digital signals; An I/O interface is used to transmit the output and input of signals, and is connected with the radio frequency circuit and the processor. 5. The hands-free device with mobile phone and external bluetooth module as claimed in claim 1, wherein the signal input interface of the mobile phone is a jack. 6. The hands-free device with mobile phone and external Bluetooth module according to claim 1, characterized in that: the signal input interface of the mobile phone is a signal line.

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