Bring the bluetooth earphone of electricity voice prompting
The utility model relates to a kind of bluetooth earphone, relates in particular to a kind of bluetooth earphone that brings the prompting of electroacoustic sound.
Bluetooth earphone has become the companion of mobile phone because of it reduces mobile phone radiation, carries and use characteristics such as all very convenient, uses more and more general.And because of the bluetooth earphone small volume and less weight, often hang over or be clipped in the common bluetooth earphone in front, thereby make the user be placed on mobile phone in the bag or in the pocket, be convenient for carrying in when incoming call.When incoming call was arranged, Bluetooth chip can be exported a prompt tone by audio interface, and sounded with the prompting user by the receiver loudspeaker.But when wearing bluetooth earphone because of the user, the receiver loudspeaker are directly filled in ear, if the volume of receiver loudspeaker output is very big, can user's ear and hearing be damaged, so this prompt tone is fainter, volume can only be controlled at suitable scope, the user must just can hear wearing under the situation of earphone.When the user not under the situation of wearing earphone on the ear, regular meeting does not miss phone because hearing the incoming call prompting sound.
[summary of the invention]
Main purpose of the present utility model is exactly in order to solve problems of the prior art, a kind of bluetooth earphone that brings the electricity voice prompting is provided, when incoming call, it is enough big that the prompting volume that bluetooth earphone sends can reach, and the user need not to wear the caller voice prompting that bluetooth earphone can hear that also bluetooth earphone sends on ear.
Of the present utility model time a purpose just provides a kind of bluetooth earphone that brings the electricity voice prompting, and when incoming call, the number of incoming call can show by bluetooth earphone, makes people not need to see the mobile phone and promptly knows caller ID.
For achieving the above object, a kind of bluetooth earphone that brings the electricity voice prompting that the utility model proposes, comprise antenna and the bluetooth module that links to each other with antenna, also comprise voice module, amplifying circuit and the loudspeaker of order series connection, described voice module links to each other with bluetooth module.
Described bluetooth module comprises Bluetooth RF circuit, bluetooth baseband and logic control circuit and the microprocessor of order series connection, and described Bluetooth RF circuit links to each other with antenna, and voice module is coupled in the output of described microprocessor.
Further improvement of the utility model is: comprise also and answer key circuit that microprocessor is coupled in described output of answering key circuit.
Also comprise the codec, audio interface circuit and the audio frequency imput output circuit that are linked in sequence, described codec links to each other with logic control circuit with bluetooth baseband.
Of the present utility model further the improvement is: also comprise display driver module and display, described display driver module links to each other with microprocessor, and described display links to each other with the display driver module.
The beneficial effects of the utility model are: 1) when incoming call, the voice module that bluetooth earphone is established by other, amplifying circuit and loudspeaker are play voice suggestion, the volume of this voice prompt is much larger than the volume of bluetooth earphone receiver loudspeaker, the user need not to wear the caller voice prompting that bluetooth earphone can hear that also bluetooth earphone sends on ear, makes the user can not miss phone because of can't hear the incoming call prompting sound.2) when the user by after answering button, answer key circuit and send a triggering signal to microprocessor, microprocessor sends a triggering signal to voice module again, the control voice module stops output, and voice suggestion sound is stopped, and receives calls not hinder the user.3) as when incoming call, caller ID can show on the display of bluetooth earphone, makes the user not need to see the mobile phone promptly to know to provide users with the convenient caller ID.
Feature of the present utility model and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.
[description of drawings]
Fig. 1 is the block diagram of a kind of embodiment of the present utility model;
Fig. 2 is the block diagram of another kind of embodiment of the present utility model;
Fig. 3 is the block diagram of another embodiment of the present utility model.
Specific embodiment one, as shown in Figure 1, bluetooth module 2 comprises the change-over circuit and the microprocessor of order series connection, change-over circuit further comprises Bluetooth RF circuit and the bluetooth baseband and the logic control circuit of series connection, the Bluetooth RF circuit links to each other with antenna 1, and bluetooth baseband links to each other with microprocessor with logic control circuit.Bluetooth baseband also links to each other with codec, audio interface circuit and audio frequency imput output circuit 3 in proper order with logic control circuit, and audio frequency imput output circuit 3 comprises microphone and receiver loudspeaker.Audio interface circuit links to each other with the receiver loudspeaker with microphone respectively.Microprocessor links to each other with voice module, amplifying circuit and loudspeaker by corresponding programmable I/O interface (PIO interface) order of bluetooth module 2.
The principle of voice prompts of incoming call is:
After bluetooth cellular phone and bluetooth earphone coupling, can automatic certain interval of time inquiry bluetooth earphone.When sending a telegram here or have phone to transfer to, bluetooth cellular phone is initiated connection request to bluetooth earphone, sets up ACL with it and connects (connection of ACL---Asynchronous Connectionless Link asynchronous data).If conversation is connected in bluetooth earphone decision, then set up mobile phone and be connected (connection of SCO---Synchronous Connection Oriented link simultaneous voice), and enter talking state with SCO between the bluetooth earphone by bluetooth cellular phone.When incoming call, bluetooth cellular phone is initiated connection request to bluetooth earphone, when setting up the ACL connection, the microprocessor of the Bluetooth chip in the bluetooth earphone can be notified certain default PIO interface that links to each other with voice module, high level of this PIO interface output drives external voice module by this high level.After voice module was received this triggering signal, outputting music signal, this music signal were undertaken by an amplifying circuit sending the music tip sound by loudspeaker after the audio frequency amplification.The volume of this prompting music is much larger than the volume of bluetooth earphone receiver loudspeaker, because of these loudspeaker are not the receiver loudspeaker, so the user can carry out voice prompts of incoming call by these loudspeaker, voice can be the melodies of telephone bell, beeping sound or one section grace, make people can not miss phone because of can't hear the incoming call prompting sound.When needs were connected phone, the user put into ear with receiver loudspeaker (earplug), and the sound of receiver loudspeaker is smaller, can user's ear and hearing not damaged.
After connecting phone, at first receive the Bluetooth RF signal of the dialog context that mobile phone sends by the antenna 1 of bluetooth earphone, by the radio circuit in the Bluetooth chip Bluetooth RF signal is amplified, filtering, shaping, again signal is delivered to base band and logic control circuit, radiofrequency signal is converted to the packet data of numeral by this circuit, codec carries out decompress(ion) with packet data and contracts and convert simulated audio signal to, audio signal after the processing is sent to audio interface circuit carries out processing and amplifying and is sent to receiver loudspeaker in the audio frequency imput output circuit 3, plays out sound by the receiver loudspeaker.Audio interface circuit has two-way enlarging function, and codec has modulus/digital-to-analogue conversion function and compression/de-compression function.In the communication process, the microphone of bluetooth earphone picks up talker's voice signal, convert simulated audio signal to and carry out processing and amplifying by audio interface circuit, convert simulated audio signal to digital signal through codec then, and output to base band and logic control circuit converts the Bluetooth RF signal to after the compression, and through antenna 1 the Bluetooth RF signal is launched by radio circuit.Thereby realize the communication between bluetooth earphone and the mobile phone.
Specific embodiment two, as shown in Figure 2, different with specific embodiment one is, has also increased on the basis of embodiment one and has answered key circuit, answers key circuit and is coupled to microprocessor by a PIO interface.When phone comes, bluetooth earphone is sent a telegram here with voice suggestion, when the user need answer, click and answer button, answer key circuit and send a level signal, after microprocessor receives this triggering signal to microprocessor, send a low level triggering signal to voice module, the control voice module stops output, and voice suggestion sound is stopped, and can not disturb like this to hinder the user to receive calls.
Specific embodiment three, as shown in Figure 3, different with specific embodiment one, two is to increase the caller ID Presentation Function.Microprocessor links to each other with display with the display driver module by the corresponding programmable I/O interface order of bluetooth module 2.Display is preferably LCD, and the display driver module is liquid crystal display-driving IC.
The principle of caller identification is:
As when incoming call, the mobile phone number information of will sending a telegram here converts the Bluetooth RF signal to, and the bluetooth earphone that Xiang Yuqi matches is in advance launched this Bluetooth RF signal.Bluetooth earphone one end that caller identification is arranged in design, the Bluetooth RF signal that sends by antenna receiving signal source (being mobile phone), by the radio circuit in the bluetooth module 2 with the amplification of Bluetooth RF signal, filtering, shaping, again signal is delivered to base band and logic control circuit, radiofrequency signal is converted to the packet information of numeral by this circuit, after microprocessor received this data, corresponding two programmable Is/O interface (being PIO interface) by bluetooth module 2 linked to each other with liquid crystal display-driving IC.Two PIO interface Simulation with I IC serial communication modes, use this communication mode and liquid crystal display-driving IC communication, caller_ID (caller ID) signal that the mobile phone that bluetooth earphone is received is sent out, by the IIC serial communication interface this signal is delivered to liquid crystal display-driving IC, come out by liquid crystal display-driving IC control liquid crystal display displays again.