CN204887368U - Lanya earphone - Google Patents

Lanya earphone Download PDF

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Publication number
CN204887368U
CN204887368U CN201520541250.6U CN201520541250U CN204887368U CN 204887368 U CN204887368 U CN 204887368U CN 201520541250 U CN201520541250 U CN 201520541250U CN 204887368 U CN204887368 U CN 204887368U
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CN
China
Prior art keywords
chip
bluetooth
input
switch
audio processing
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Expired - Fee Related
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CN201520541250.6U
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Chinese (zh)
Inventor
张圣杰
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Nubia Technology Co Ltd
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Nubia Technology Co Ltd
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Abstract

The utility model discloses a lanya earphone, this lanya earphone include battery pack, bluetooth chip, audio frequency processing chip, speaker, switch switching circuit and USB interface, and bluetooth chip and audio frequency processing chip are connected with battery pack respectively, the switch switching circuit includes first input end, second input and output, and the first input end and the output of bluetooth chip of switch switching circuit are connected, the second input and the USB interface connection of switch switching circuit, and the output and the input of audio frequency processing chip of switch switching circuit are connected, and the audio frequency is handled the output of chip and is connected with the speaker, wherein, the switch switching circuit is used for controlling bluetooth chip and the switch -on of audio frequency processing chip, perhaps, and control USB interface and the switch -on of audio frequency processing chip. The utility model discloses a lanya earphone also can be through USB interface type audio signal's mesh for this lanya earphone also can play out high -quality music through wire transmission audio signal.

Description

Bluetooth earphone
Technical field
The utility model relates to earphone field, particularly relates to a kind of bluetooth earphone.
Background technology
Bluetooth earphone due to easy to use and deeply to like by people, but existing bluetooth earphone be substantially all matched by Bluetooth protocol and corresponding Bluetooth audio equipment after transmission of audio signal.And limit due to the bandwidth of Bluetooth protocol, the voice data of transmission all can through lossy compression method (SBC, MP3, AAC etc.), and namely voice data is after overcompression, and audio frequency component loses, and the music tonequality causing bluetooth earphone to export is poor.If want the music appreciating high-quality, then can only select wired earphone, for both needing conveniently, need again the user of the music enjoying high-quality, existing bluetooth earphone cannot meet its requirement.
Utility model content
Main purpose of the present utility model is to provide a kind of bluetooth earphone, is intended to realize bluetooth earphone by USB interface input audio signal.
For achieving the above object, the utility model provides a kind of bluetooth earphone, and this bluetooth earphone comprises battery component, Bluetooth chip, audio processing chip and loud speaker, and described Bluetooth chip and audio processing chip are connected with described battery component respectively; Described bluetooth earphone also comprises switch switching circuit and USB interface, described switch switching circuit comprises first input end, the second input and output, the first input end of described switch switching circuit is connected with the output of described Bluetooth chip, second input of described switch switching circuit is connected with described USB interface, and the output of described switch switching circuit is connected with the input of described audio processing chip; The output of described audio processing chip is connected with described loud speaker; Wherein, described switch switching circuit for controlling described Bluetooth chip and described audio processing chip is connected, or, control USB interface and described audio processing chip is connected.
Preferably, described switch switching circuit is button circuits for triggering, for controlling described Bluetooth chip and described audio processing chip is connected when producing actuation of keys, or, control described USB interface and described audio processing chip is connected.
Preferably, described switch switching circuit is slide switch, the slide key that described slide switch comprises the first contact, the second contact and slides between described first contact and the second contact; Described first contact is electrically connected with described Bluetooth chip, and described second contact is electrically connected with described USB interface, and described slide key is electrically connected with described audio processing chip; When described slide key slides into described first contact, described slide key is electrically connected with described first contact, and when described slide key slides into described second contact, described slide key is electrically connected with described second contact.
Preferably, described switch switching circuit comprises the first electronic switch, the second electronic switch, the first button, the first control chip and trigger signal source, the input of described first electronic switch is connected with the output of described Bluetooth chip, the output of described first electronic switch is connected with the input of described audio processing chip, and the controlled end of described first electronic switch is connected with the first output pin of described first control chip; The input of described second electronic switch is connected with described USB interface, and the output of described second electronic switch is connected with the input of described audio processing chip, and the controlled end of described second electronic switch is connected with the second output pin of described first control chip; One of described first control chip detects pin and is connected with described Bluetooth chip; The input of described first button is connected with described trigger signal source, and the output of described first button is connected with described first control chip.
Preferably, described switch switching circuit is used for when described USB interface and external sound source equipment connection, control described USB interface and described audio processing chip is connected, when receiving audio signal at described Bluetooth chip and be not connected with external sound source equipment in described USB interface, control described Bluetooth chip and described audio processing chip is connected.
Preferably, described switch switching circuit comprises the 3rd electronic switch, the 4th electronic switch and the second control chip, the input of described 3rd electronic switch is connected with the output of described Bluetooth chip, the output of described 3rd electronic switch is connected with the input of described audio processing chip, and the controlled end of described 3rd electronic switch is connected with the first output pin of described second control chip; The input of described 4th electronic switch is connected with described USB interface, and the output of described 4th electronic switch is connected with the input of described audio processing chip, and the controlled end of described 4th electronic switch is connected with the second output pin of described second control chip; One of described second control chip detects pin and is connected with described USB interface.
Preferably, described bluetooth earphone also comprises normally closed switch, described normally closed switch is series between described battery component and described Bluetooth chip, described normally closed switch is used for when described switch switching circuit controls described USB interface and described audio processing chip connects, carry out switch triggering, to cut off the power supply that described battery component exports Bluetooth chip to.
Preferably, described bluetooth earphone also comprises AUX audio interface, and described AUX audio interface is connected with the input of described audio processing chip.
The utility model by arranging USB interface and switch switching circuit on bluetooth earphone, and the output of the first input end of switch switching circuit with the Bluetooth chip on this bluetooth earphone is connected, second input of switch switching circuit is connected with USB interface, and the output of switch switching circuit is connected with the input of the audio processing chip on bluetooth earphone; So, when the USB interface on this bluetooth earphone being connected with Bluetooth audio equipment by USB connecting line, just can passing through this USB interface input audio signal, make this bluetooth earphone also can play out the music of high-quality.
Accompanying drawing explanation
Fig. 1 is the circuit structure block diagram of the utility model bluetooth earphone one embodiment;
Fig. 2 is the circuit structure block diagram of another embodiment of the utility model bluetooth earphone;
Fig. 3 is the circuit structure block diagram of the another embodiment of the utility model bluetooth earphone;
Fig. 4 is the circuit structure block diagram of the utility model bluetooth earphone also embodiment;
Fig. 5 is the signal flow graph between the utility model bluetooth earphone and USB main equipment.
Drawing reference numeral illustrates:
Label Title Label Title
100 Bluetooth chip 54 Trigger signal source
200 Audio processing chip 55 First button
300 Battery component 501 3rd electronic switch
400 Loud speaker 502 4th electronic switch
500 Switch switching circuit 503 Second control chip
600 USB interface 31 Charging chip
700 Normally closed switch 32 Rechargeable battery
51 First electronic switch 33 First power-switching circuit
52 Second electronic switch 34 Second source change-over circuit
53 First control chip ANT Antenna
The realization of the utility model object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Be described further with regard to the technical solution of the utility model below in conjunction with drawings and the specific embodiments.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of bluetooth earphone.
Referring to figs. 1 through 4, in the utility model one embodiment, this bluetooth earphone comprises the Bluetooth chip 100 for received audio signal, be connected with described Bluetooth chip 100, for decoding to the audio signal received, the audio processing chip 200 of digital-to-analogue conversion and amplification process, be connected with described Bluetooth chip 100 and audio processing chip 200 respectively, there is provided the battery component 300 of working power with audio processing chip 200 to give described Bluetooth chip 100 and be connected with the output of described audio processing chip 200, for the audio signal after amplification being converted to the loud speaker 400 of voice signal.
Audio frequency input can be carried out by USB interface to realize this bluetooth earphone, described bluetooth earphone also comprises switch switching circuit 500 and USB interface 600, described switch switching circuit 500 comprises first input end, the second input and output, the first input end of described switch switching circuit 500 is connected with the output of described Bluetooth chip 100, second input of described switch switching circuit 500 is connected with described USB interface 600, and the output of described switch switching circuit 500 is connected with the input of described audio processing chip 200; Wherein, described switch switching circuit 500 is connected with described audio processing chip 200 for controlling described Bluetooth chip 100, or, control described USB interface 600 and connect with described audio processing chip 200.So, when the USB interface 600 on this bluetooth earphone being connected with Bluetooth audio equipment by USB connecting line, just can passing through this USB interface 600 input audio signal, make this bluetooth earphone also can play out the music of high-quality.Be understandable that, by USB interface 600 wire transmission audio signal, audio frequency component loss is less, and compared with blue tooth transmission audio frequency signal, the quality of the audio signal after transmission is higher, and tonequality is better.In addition, after the USB interface 600 on this bluetooth earphone being connected with audio-source such as computer or onboard audio modules by USB connecting line, can not only input audio signal by USB interface 600, charge can also to battery component 300 simultaneously, very convenient.Wherein, the power port input power by USB interface 600 charges, the data difference port by USB interface 600: D+ port and D-port corresponding transmission of audio left channel signals and right-channel signals respectively.
Particularly, battery component 300 comprises charging chip 31, rechargeable battery 32 and the supply voltage for being exported by rechargeable battery 32 the first power-switching circuit 33 and being used for be converted to for the normal work of Bluetooth chip 100 and the supply voltage that rechargeable battery 32 exports is converted to second source change-over circuit 34 for the normal work of audio processing chip 200, this first power-switching circuit 33 and second source change-over circuit 34 can adopt dc-dc to realize, such as linear voltage regulator (LDO).It is worth mentioning that, because the supply power voltage (being generally 1.8 volts) of Bluetooth chip 100 is lower than the supply power voltage (being generally 3.3 volts) of audio processing chip 200, therefore the first power-switching circuit 33 directly can connect the power output end of second source change-over circuit 34, as shown in Figure 4, by linear voltage regulator (LDO), 3.3 volts of voltages are directly converted to 1.8 volts of voltages, normally work for Bluetooth chip 100, to improve conversion efficiency.Wherein, rechargeable battery 32 is preferably lithium battery, by USB interface 600 input power, and carries out power management by charging chip 31, realizes cycle charging.
The Bluetooth audio signals that Bluetooth chip 100 is sent by being received external audio source by antenna ANT.Wherein, Bluetooth chip 100 is communicated with the audio source device of pairing by Bluetooth protocol, to receive the audio signal after compression, by the digital audio and video signals obtaining PCM form that decompresses, then is transferred to audio processing chip 200 by pcm interface.
Audio processing chip 200 comprises audio decoder (scheming not shown), digital to analog converter (scheming not shown) and built-in power amplifier (scheming not shown).Wherein, audio decoder is used for decoding to the digital audio and video signals of the PCM form of input, and exports decoded digital audio and video signals; Digital to analog converter is used for decoded digital audio and video signals to be converted to simulated audio signal; Built-in power amplifier is used for exporting loud speaker 400 to, to carry out music after the simulated audio signal after to conversion amplifies.
Switch switching circuit 500 is for when described USB interface 600 is with external sound source equipment connection, control described USB interface 600 to connect with described audio processing chip 200, when receiving audio signal at described Bluetooth chip 100 and be not connected with external sound source equipment in described USB interface 600, control described Bluetooth chip 100 and connect with described audio processing chip 200.Certainly, this switch switching circuit 500 also can be button circuits for triggering, connects with described audio processing chip 200 for controlling described Bluetooth chip 100 when producing actuation of keys, or, control described USB interface 600 and connect with described audio processing chip 200.Button wherein for generation of actuation of keys is be arranged on the mechanical key on this bluetooth earphone.
Be in the embodiment of button circuits for triggering in above-mentioned switch switching circuit 500, switch switching circuit 500 can realize especially by following circuit structure:
Above-mentioned switch switching circuit 500 is slide switch, the slide key (scheming not shown) comprising the first contact (scheming not shown), the second contact (scheming not shown) and slide between described first contact and the second contact; Described first contact is electrically connected with described Bluetooth chip 100, and described second contact is electrically connected with described USB interface 600, and described slide key is electrically connected with described audio processing chip 200; When described slide key slides into described first contact, described slide key is electrically connected with described first contact, to be connected with described audio processing chip 200 by described Bluetooth chip 100; When described slide key slides into described second contact, described slide key is electrically connected with described second contact, described USB interface 600 to be connected with described audio processing chip 200.Understandablely be, when USB interface 600 is with external sound source equipment connection, USB interface 600 has usb signal input, this usb signal comprises audio signal and power supply signal, namely all can realize differentiating whether USB interface 600 is connected external sound source equipment by detecting audio signal and any one in power supply signal.
It should be noted that, be in the embodiment of button circuits for triggering in described switch switching circuit 500, switch switching circuit 500 also can realize especially by following circuit structure:
With reference to Fig. 2, described switch switching circuit 500 comprises the first electronic switch 51, second electronic switch 52, first control chip 53, trigger signal source 54 and the first button 55, the input of described first electronic switch 51 is connected with the output of described Bluetooth chip 100, the output of described first electronic switch 51 is connected with the input of described audio processing chip 200, and the controlled end of described first electronic switch 51 is connected with the first output pin of described first control chip 53; The input of described second electronic switch 52 is connected with described USB interface 600, the output of described second electronic switch 52 is connected with the input of described audio processing chip 200, and the controlled end of described second electronic switch 52 is connected with the second output pin of described first control chip 53; One of described first control chip 53 detects pin and is connected with described Bluetooth chip 100; The input of described first button 55 is connected with described trigger signal source 54, and the output of described first button 55 is connected with described first control chip 53.Wherein, when the first button 55 is pressed, trigger signal source 54 exports triggering signal to the first control chip 53, exports first and controls signal to the first electronic switch 51, control the first electronic switch 51 and close to make the first output pin of the first control chip 53; Meanwhile, the second output pin of the first control chip 53 exports second and controls signal to the second electronic switch 52, controls the second electronic switch 52 and opens, now by USB interface 600 transmission of audio signal.When described first button 55 is pressed again, trigger signal source 54 exports triggering signal to the first control chip 53, to make the first output pin of the first control chip 53 export the 3rd control signal, controls the first electronic switch 51 and opens; Meanwhile, the second output pin of the first control chip 53 exports the 4th control signal, controls the second electronic switch 52 and closes, now by Bluetooth chip 100 transmission of audio signal.
In above-mentioned switch switching circuit 500 for when described USB interface 600 is with external sound source equipment connection, control described USB interface 600 to connect with described audio processing chip 200, when receiving audio signal at described Bluetooth chip 100 and be not connected with external sound source equipment in described USB interface 600, control in the embodiment that described Bluetooth chip 100 and described audio processing chip 200 connect, switch switching circuit 500 can realize especially by following circuit structure:
With reference to Fig. 3, switch switching circuit 500 comprises the 3rd electronic switch 501, the 4th electronic switch 502 and the second control chip 503, the input of described 3rd electronic switch 501 is connected with the output of described Bluetooth chip 100, the output of described 3rd electronic switch 501 is connected with the input of described audio processing chip 200, and the controlled end of described 3rd electronic switch 501 is connected with the first output pin of described second control chip 503; Described 4th electronic switch 502 and the second control chip 503, the input of described 3rd electronic switch 501 is connected with described USB interface 600 with the input of described Bluetooth chip 100, the output of described 4th electronic switch 502 is connected with the input of described audio processing chip 200, and the controlled end of described 4th electronic switch 502 is connected with the second output pin of described second control chip 503; One of described second control chip 503 detects pin and is connected with described USB interface 600.
In this embodiment, second control chip 503 is for when detecting that Bluetooth chip 100 has audio signal input and be not connected with external sound source equipment in described USB interface 600, control the 3rd electronic switch 501 to open, 4th electronic switch 502 turns off, audio signal is delivered to audio processing chip 200 by Bluetooth chip 100; Second control chip 503 is also for when described USB interface 600 being detected with external sound source equipment connection, and control the 3rd electronic switch 501 and turn off, the 4th electronic switch 502 is opened, and by USB interface 600, audio signal is inputed to audio processing chip 200.It should be noted that, in this embodiment, the priority that USB interface 600 and audio processing chip 200 are connected, higher than Bluetooth chip 100, as long as detect that USB interface 600 has usb signal to input, even if then Bluetooth chip 100 receives audio signal, does not also trigger.Wherein, the Bluetooth audio signals that external sound source equipment (such as, mobile phone) sends carries Bluetooth transmission control command, and user is by touching virtual or physical button on external sound source equipment interactive interface to send Bluetooth transmission control command.
It should be noted that, in the above-described embodiments, the first electronic switch 5141, second electronic switch 52, the 3rd electronic switch 501 and the 4th electronic switch 502 can adopt the switch element such as triode, metal-oxide-semiconductor to realize.
Based on above-described embodiment, and with reference to Fig. 2 or Fig. 3, in embodiment further, described bluetooth earphone also comprises normally closed switch 700, described normally closed switch 700 is series between described battery component 300 and described Bluetooth chip 100, described normally closed switch 700, for control in described switch switching circuit 500 USB interface 600 and described audio processing chip 200 connect time, carry out switch triggering, to cut off the power supply that described battery component 300 exports Bluetooth chip 100 to.The initial condition of this normally closed switch 700 is closure state, make the circuit communication of access, when USB interface 600 is with external sound source equipment connection, when namely detecting that USB interface 600 has usb signal to input, this normally closed switch 700 cut-offs, and the power supply making battery component 300 export Bluetooth chip 100 to disconnects, and then Bluetooth chip 100 is quit work, with saves energy, also ensure that the supply voltage of supply audio frequency process chip 200 is more stable simultaneously.And switch switching circuit 500 is not when described USB interface 600 is connected with external sound source equipment, the first control chip 53 controls again this normally closed switch 700 and closes, and Bluetooth chip 100 is powered on, to ensure that Bluetooth chip 100 can real-time reception audio signal.
Based on above-described embodiment, in embodiment further, this bluetooth earphone also comprises AUX audio interface (scheming not shown), and described AUX audio interface is connected with the input of described audio processing chip 200.Coordinated with AUX audio connecting cord by AUX audio interface, can realize carrying out wired connection with more audio frequency apparatus, to export the music of high-quality.
It should be noted that, above-mentioned USB interface transmission of audio signal realizes by modes such as controls transfer (ControlTransfer), synchronous transmission (IsochronousTransfer), interrupt transfer (InterruptTransfer), batch transfers (BulkTransfer), see Fig. 5, this several transmission means can meet the requirement of different peripheral and user.They have features different separately in data format, transmission direction, packet size restriction, bus access restriction etc., specific as follows:
Controls transfer (ControlTransfer) is generally used for the situations such as configuration/order/state; Wherein, the packet of setting operation (setup) and state of operation (status) has the structure of USB definition, therefore controls transfer can only be undertaken by message pipeline, support transmitted in both directions, end points can not specify the frequency of bus access can make restriction with the time USB systems soft ware taking bus, there is transfer of data ensure, where necessary can retry.
Synchronous transmission (IsochronousTransfer) comprises synchronism output (IsochronousoutTransfer) and synchronous input (IsochronousinTransfer), the transmission that synchronous transmission is a kind of cycle, continuous print transmission means is generally used for the information having substantial connection with the time; The structure (data flow pipeline) that data do not have USB to define; One-way transmission, if a peripheral hardware needs transmitted in both directions, then must use another end points, and its heap(ed) capacity that can only be used for high-speed equipment packet from 0 to 1023 bytes, can have Bandwidth guaranteed; And keep the every frame of each synchronisation conduit of the constant rate of transfer of data to transmit a packet; There is no data re-transmitting mechanism, require that there is certain fault-tolerance; The time taking bus together with interrupt mode must not more than 90% of a frame.
Interrupt transfer (InterruptTransfer) is for the transmission of aperiodic, abiogenous, that data volume is very little information, as keyboard, mouse etc., the structure (data flow pipeline) that data do not have USB to define, only have this kind of transmission means of input, namely, be set to main equipment (USBHOST); Allowing packet heap(ed) capacity can only be less than or equal to 8 bytes for being less than or equal to 64 bytes for low-speed device for high-speed equipment, there is maximum service period and ensure, namely ensuring a data transfer at the appointed time; The time taking bus together with the method for synchronization more than 90% of a frame, must not have transfer of data and ensures, where necessary can retry.
Batch transfer (BulkTransfer) is for a large amount of transfer of data do not required the time, structure (data flow pipeline) one-way transmission that data do not have USB to define, if a peripheral hardware needs transmitted in both directions, then must use another end points, can only be used for high-speed equipment allows packet heap(ed) capacity to be 8, or 16, or 32, or 64 bytes, there is no the guarantee of bandwidth, as long as there is bus free, just allow to transmit (data priority is less than controls transfer), there is transfer of data ensure, where necessary can retry, to ensure the accuracy of data.
As shown in Figure 5, this embodiment adopts synchronous transmission, interrupt transfer, controls transfer to combine.Wherein, (USB is from equipment for bluetooth earphone, USBDevice) by USB connecting line to be connected with USB main equipment (USBHOST) charge time, audio signal adopts synchronism output (IsochronousoutTransfer) mode to export, export the loud speaker (Speaker) 400 of bluetooth earphone after digital-to-analogue conversion process (DAC) to, also can be loudspeaker; And the microphone of bluetooth earphone (Microphone) signal inputs to USB main equipment in the synchronous input of employing (IsochronousinTransfer) mode after analog-to-digital conversion process (ADC); Wherein, strengthening part (Volume) by volume adopts digital gain mode to carry out level of sound volume control to the audio signal exporting loud speaker 400 to; Mic mute is controlled by quiet key (Mutebuttion).
Should be noted that; the technical scheme of each embodiment of the present utility model can be combined with each other; but must be can be embodied as basis with those skilled in the art; when technical scheme combination occur conflicting maybe cannot realize time will be understood that the combination of this technical scheme does not exist, also not the utility model require protection range within.
These are only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.

Claims (8)

1. a bluetooth earphone, comprises battery component, Bluetooth chip, audio processing chip and loud speaker, and described Bluetooth chip and audio processing chip are connected with described battery component respectively; It is characterized in that, described bluetooth earphone also comprises switch switching circuit and USB interface, described switch switching circuit comprises first input end, the second input and output, the first input end of described switch switching circuit is connected with the output of described Bluetooth chip, second input of described switch switching circuit is connected with described USB interface, and the output of described switch switching circuit is connected with the input of described audio processing chip; The output of described audio processing chip is connected with described loud speaker; Wherein, described switch switching circuit for controlling described Bluetooth chip and described audio processing chip is connected, or, control described USB interface and described audio processing chip is connected.
2. bluetooth earphone as claimed in claim 1, it is characterized in that, described switch switching circuit is button circuits for triggering, for controlling described Bluetooth chip and described audio processing chip is connected when producing actuation of keys, or, control described USB interface and described audio processing chip is connected.
3. bluetooth earphone as claimed in claim 2, is characterized in that, the slide key that described switch switching circuit comprises the first contact, the second contact and slides between described first contact and the second contact; Described first contact is electrically connected with described Bluetooth chip, and described second contact is electrically connected with described USB interface, and described slide key is electrically connected with described audio processing chip; When described slide key slides into described first contact, described slide key is electrically connected with described first contact, and when described slide key slides into described second contact, described slide key is electrically connected with described second contact.
4. bluetooth earphone as claimed in claim 2, it is characterized in that, described switch switching circuit comprises the first electronic switch, the second electronic switch, the first button, the first control chip and trigger signal source, the input of described first electronic switch is connected with the output of described Bluetooth chip, the output of described first electronic switch is connected with the input of described audio processing chip, and the controlled end of described first electronic switch is connected with the first output pin of described first control chip; The input of described second electronic switch is connected with described USB interface, and the output of described second electronic switch is connected with the input of described audio processing chip, and the controlled end of described second electronic switch is connected with the second output pin of described first control chip; One of described first control chip detects pin and is connected with described Bluetooth chip; The input of described first button is connected with described trigger signal source, and the output of described first button is connected with described first control chip.
5. bluetooth earphone as claimed in claim 1, it is characterized in that, described switch switching circuit is used for when described USB interface and external sound source equipment connection, control described USB interface and described audio processing chip is connected, when receiving audio signal at described Bluetooth chip and be not connected with external sound source equipment in described USB interface, control described Bluetooth chip and described audio processing chip is connected.
6. bluetooth earphone as claimed in claim 5, it is characterized in that, described switch switching circuit comprises the 3rd electronic switch, the 4th electronic switch and the second control chip, the input of described 3rd electronic switch is connected with the output of described Bluetooth chip, the output of described 3rd electronic switch is connected with the input of described audio processing chip, and the controlled end of described 3rd electronic switch is connected with the first output pin of described second control chip; The input of described 4th electronic switch is connected with described USB interface, and the output of described 4th electronic switch is connected with the input of described audio processing chip, and the controlled end of described 4th electronic switch is connected with the second output pin of described second control chip; One of described second control chip detects pin and is connected with described USB interface.
7. as the bluetooth earphone in claim 1-6 as described in any one, it is characterized in that, described bluetooth earphone also comprises normally closed switch, described normally closed switch is series between described battery component and described Bluetooth chip, described normally closed switch is used for when described switch switching circuit controls described USB interface and described audio processing chip connects, carry out switch triggering, to cut off the power supply that described battery component exports Bluetooth chip to.
8. as the bluetooth earphone in claim 1-6 as described in any one, it is characterized in that, described bluetooth earphone also comprises AUX audio interface, and described AUX audio interface is connected with the input of described audio processing chip.
CN201520541250.6U 2015-07-23 2015-07-23 Lanya earphone Expired - Fee Related CN204887368U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105100993A (en) * 2015-07-23 2015-11-25 努比亚技术有限公司 Bluetooth earphone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105100993A (en) * 2015-07-23 2015-11-25 努比亚技术有限公司 Bluetooth earphone

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