CN204014027U - A kind of digital audio decoding general headrest with USB interface - Google Patents
A kind of digital audio decoding general headrest with USB interface Download PDFInfo
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- CN204014027U CN204014027U CN201420425749.6U CN201420425749U CN204014027U CN 204014027 U CN204014027 U CN 204014027U CN 201420425749 U CN201420425749 U CN 201420425749U CN 204014027 U CN204014027 U CN 204014027U
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Abstract
The utility model discloses a kind of digital audio decoding general headrest with USB interface; Comprise audio input interface, governor circuit and loudspeaker, audio input interface is USB interface, and USB interface is in order to absorb digital audio and video signals from audio-frequency playing terminal; Governor circuit comprises digital signal processing circuit, D/A converting circuit and power amplifier; Digital signal processing circuit is connected with audio input interface, and D/A converting circuit is connected with digital signal processing circuit, and power amplifier is connected with D/A converting circuit, and the output of power amplifier is connected with loudspeaker; The utility model has additional the headset plug that a USB interface replaces original 3.5mm, directly by USB line, connect audio-frequency playing terminal and obtain voice data, audio transmission speed is fast, and because of sound field, widen, make the sound dynamic effect of broadcasting better, sound stream is dynamic strong, this USB interface can meet the different USB line of connection and use, as apple USB line and Android USB line etc., the utility model also can be worked as portable power source and be used, powerful.
Description
Technical field
The utility model relates to technical field of electronic products, specifically, relates to a kind of in order to listen to the earphone of music etc.
Background technology
In prior art, the plug earphone of general 3.5mm, when playing the undertension of the playback terminal of music, while making thrust inadequate, the tonequality of relevant plug earphone just there will be the problems such as sound press deficiency, distortion or the dynamic sense of shortcoming, so that makes the plug earphone abandoned gradually of 3.5mm, after relevant plug earphone is used ear and is put, can strengthen to some extent because of power, also will make the tonequality of playing become stable, result of broadcast is slightly good, thereby, the headphone that common headphones is put to use in conjunction with ear is more and more welcome, but, headphone of the prior art, though its result of use is good, but the principle of its broadcasting etc. is compared with common earphone, still there is no too large difference, and all need from digital signal, to convert audio signal to analog signal output, so, the effect of playing is still short of to some extent, sound field is not very wide, result of broadcast should be not,
Base is like this, designs that a sound field is wider, the better earphone of result of broadcast, with for people to use, is necessary, and it must have good market popularization value and use value.
Utility model content
The purpose of this utility model is to overcome the deficiency of above-mentioned prior art and a kind of digital audio decoding general headrest with USB interface of providing.
The technical scheme that the utility model solution prior art problem adopts is: a kind of digital audio decoding general headrest with USB interface, comprise audio input interface, governor circuit and loudspeaker, its improvement is, described audio input interface is USB interface, described USB interface is connected by the USB joint of apple USB line or the Android USB line USB access interface corresponding with audio-frequency playing terminal, in order to absorb digital audio and video signals from audio-frequency playing terminal;
Described governor circuit comprises digital signal processing circuit, D/A converting circuit and power amplifier;
Wherein, the input of described digital signal processing circuit is connected with described audio input interface, in order to receive and to process the digital audio and video signals that described audio input interface absorbs;
The input of described D/A converting circuit is connected with the output of described digital signal processing circuit, in order to convert the digital audio and video signals after described digital signal processing circuit is processed to simulated audio signal;
The input of described power amplifier is connected with the output of described D/A converting circuit, in order to the simulated audio signal after D/A converting circuit conversion is amplified; The output of described power amplifier is connected with described loudspeaker, in order to the simulated audio signal after amplifying is exported by described loudspeaker.
Below above technical scheme is further elaborated:
Preferably, also comprise a switch key and an audio input channel, described audio input channel comprises the first audio input channel and the second audio input channel, described switch key is in order to switch described the first audio input channel and the second audio input channel, and described switch key is connected with described USB interface, described the first audio input channel is connected with described digital signal processing circuit respectively with the second audio input channel; Described the first audio input channel digital audio and video signals that the USB joint by apple USB line absorbs in order to input; Described the second audio input channel digital audio and video signals that the USB joint by Android USB line absorbs in order to input.Preferably, also comprise an earphone charging inlet and a supplying cell, described earphone charging inlet is connected with described supplying cell by a charging circuit, and described supplying cell is connected with described governor circuit.
Preferably, also comprise an earphone charging inlet and a supplying cell, described earphone charging inlet is connected with described supplying cell by a charging circuit, and described supplying cell is connected with described governor circuit.
Preferably, also comprise a headset plug, described headset plug is connected with the input of described loudspeaker by an electronic switch.
Preferably, described audio-frequency playing terminal be mobile phone, MP3, MP4, in any one.
Preferably, described digital signal processing circuit adopts OTK5262 chip, described switch key to adopt AZAW2210F chip, and described audio input channel is arranged at the inside of described AZAW2210F chip;
Wherein, the USB-PROT-D+ pin of described USB interface is connected to the A1 pin of described AZAW2210F chip, and USB-PROT-D-pin is connected to the B1 pin of described AZAW2210F chip; The DA pin of described AZAW2210F chip is connected to the USB-DM pin of described OTK5262 chip, and DB pin is connected to the USB-DP pin of described OTK5262 chip; And the USB-PROT-D+ pin of described USB interface is connected to the base stage of a NPN pipe by a resistance R 308; The grounded emitter of described NPN pipe, collector electrode is connected to 3.3V voltage by resistance R 309 on the one hand, is connected on the other hand the GPIO1/UART0-TX pin of described OTK5262 chip.
Preferably, also comprise an authentication module in order to apple USB line is authenticated, the 1st pin ground connection of described authentication module, the 2nd pin is connected to 3.3V voltage by a resistance R 1 on the one hand, be connected on the other hand the GPIO0/UART1-TX pin of described OTK5262 chip, the 6th pin is connected to 3.3V voltage by a resistance R 02 on the one hand, be connected on the other hand the GPIO0/UART1-RX pin of described OTK5262 chip, pass 7 pins and be connected to 3.3V voltage by a resistance R 2, the 8th pin is connected to 3.3V voltage, and the 8th pin is by capacitor C 10 ground connection.
Preferably, also comprise a FLASH memory module, described FLASH memory module adopts SST25VF512 chip, the SO pin of described SST25VF512 chip is connected to the A22/SPI-DATA1 pin of described OTK5262 chip, SI pin is connected to the A21/SPI-DATA0 pin of described OTK5262 chip, SCK pin is connected to the A20/SPI-CLK pin of described OTK5262 chip, CE pin is connected to the A19/SPI-CS pin of described OTK5262 chip, GND pin ground connection, HOLD pin is connected to the A24/SPI-DATA3 pin of described OTK5262 chip, WP pin is connected to the A23/SPI-DATA2 pin of described OTK5262 chip, VDD pin is connected to 3.3V voltage on the one hand, on the other hand by capacitor C 1 ground connection.
The beneficial effects of the utility model are:
One, a kind of digital audio decoding general headrest with USB interface provided by the utility model, have additional the headset plug that a USB interface replaces original 3.5mm, directly by USB line, connect audio-frequency playing terminal and obtain voice data, audio transmission speed is fast, and efficiency is high, and by after voice data processing circuit processes, better from the sound effect of loudspeaker output, and widen because of sound field, make the sound dynamic effect of broadcasting better, senior middle school's bass is well arranged, and sound stream is dynamic strong.
Two, of the present utility modelly in order to absorb the USB interface of voice data, can meet and connect different USB lines and use, as apple USB line and Android USB line etc., in use, only need switch broadcast path by switch key, use simply, also make strong adaptability.
Three, the utility model is connecting audio-frequency playing terminal, during as mobile phone, MP4 etc., can be by the detection of described input voltage control circuit, when load voltage is during lower than the voltage of supplying cell of the present utility model, the utility model also can oppositely charge to load, make the utility model also can work as portable power source and use, make with better function.
Four, when the utility model does not have electricity, also can be by closing described electronic switch, the receiver J-Horner that connects audio-frequency playing terminal by described headset plug, also can realize the broadcasting of music, make to use portable, and the utility model does not need to increase too many cost, what make that the utility model can be very is welcome, and it must have good market popularization value and use value.
Accompanying drawing explanation
Fig. 1 is the digital audio decoding general headrest integrated circuit block diagram of the utility model band USB interface;
Fig. 2 is the circuit diagram of earphone interface described in the utility model embodiment and correlated inputs voltage control circuit;
Fig. 3 is the circuit diagram of switch key part in the utility model embodiment;
Fig. 4 is the circuit diagram of the utility model embodiment sound intermediate frequency data processing circuit;
Fig. 5 is the circuit diagram of D/A converting circuit, power amplifier and loudspeaker in the utility model embodiment;
Fig. 6 is the circuit diagram of earphone charging inlet, charging circuit and supplying cell in the utility model embodiment;
Fig. 7 is the circuit diagram of authentication module described in the utility model embodiment;
Fig. 8 is the circuit diagram of FLASH memory module described in the utility model embodiment;
The realization of the utility model object, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.
In figure, governor circuit 10; Voice data treatment circuit 101; D/A converting circuit 102; Power amplifier 103; Authentication module 104; FLASH memory module 105; Loudspeaker 20; USB interface 30; Switch key 40; Audio input channel 5; The first audio input channel 501; The second audio input channel 502; Earphone charging inlet 60; Supplying cell 70; Charging circuit 80; Headset plug 90; Electronic switch 100;
Embodiment
Below with reference to drawings and the specific embodiments, describe the technical solution of the utility model in detail, so as clearer, understand invention essence of the present utility model intuitively.
Fig. 1 is the digital audio decoding general headrest integrated circuit block diagram of the utility model band USB interface; Fig. 2 is the circuit diagram of earphone interface described in the utility model embodiment and correlated inputs voltage control circuit; Fig. 3 is the circuit diagram of switch key part in the utility model embodiment; Fig. 4 is the circuit diagram of the utility model embodiment sound intermediate frequency data processing circuit; Fig. 5 is the circuit diagram of D/A converting circuit, power amplifier and loudspeaker in the utility model embodiment; Fig. 6 is the circuit diagram of earphone charging inlet, charging circuit and supplying cell in the utility model embodiment; Fig. 7 is the circuit diagram of authentication module described in the utility model embodiment; Fig. 8 is the circuit diagram of FLASH memory module described in the utility model embodiment;
Shown in Fig. 1, a kind of digital audio decoding general headrest with USB interface provided by the utility model, comprise audio input interface, governor circuit 10 and loudspeaker 20, improvement of the present utility model is, described audio input interface is USB interface 30, described USB interface 30 is connected by the USB joint of apple USB line or the Android USB line USB access interface corresponding with audio-frequency playing terminal, in order to absorb digital audio and video signals from audio-frequency playing terminal;
Described governor circuit 10 comprises digital signal processing circuit 101, D/A converting circuit 102 and power amplifier 103;
Wherein, the input of described digital signal processing circuit 101 is connected with described audio input interface, in order to receive and to process the digital audio and video signals that described audio input interface absorbs;
The input of described D/A converting circuit 102 is connected with the output of described digital signal processing circuit 101, in order to convert the digital audio and video signals after described digital signal processing circuit 101 is processed to simulated audio signal;
The input of described power amplifier 103 is connected with the output of described D/A converting circuit 102, in order to the simulated audio signal after D/A converting circuit 102 conversions is amplified; The output of described power amplifier 103 is connected with described loudspeaker 20, in order to the simulated audio signal after amplifying is exported by described loudspeaker 20.
As preferred version, the utility model also comprises a switch key 40 and an audio input channel 50, described audio input channel 50 comprises the first audio input channel 501 and the second audio input channel 502, described switch key is in order to switch described the first audio input channel 501 and the second audio input channel 502, and described switch key is connected with described USB interface 30, described the first audio input channel 501 is connected with described digital signal processing circuit 101 respectively with the second audio input channel 502; Described the first audio input channel 501 digital audio and video signals that the USB joint by apple USB line absorbs in order to input; Described the second audio input channel 502 digital audio and video signals that the USB joint by Android USB line absorbs in order to input.
So, the utility model replaces the headset plug of original 3.5mm by having additional a USB interface 30, directly by USB line, connect audio-frequency playing terminal and obtain voice data, make audio transmission speed fast, efficiency is high, and by after voice data processing circuit processes, better from the sound effect of loudspeaker 20 outputs, and because sound field is widened, make the sound dynamic effect of broadcasting also better, senior middle school's bass is well arranged, sound stream innervation also obtains by force, and make of the present utility modelly in order to absorb the USB interface 30 of voice data, can meet and connect different USB lines and use, as apple USB line and Android USB line etc., in use, only need switch broadcast path by switch key, use simple, also make the utility model strong adaptability.
It is emphasized that the utility model also comprises an earphone charging inlet 60 and a supplying cell 70, described earphone charging inlet 60 is connected with described supplying cell 70 by a charging circuit 80, and described supplying cell 70 is connected with described governor circuit 10.
So, by earphone charging inlet 60, connect power supply and can be described supplying cell 70 chargings of the present utility model, required in order to the utility model work.
It should be noted that, better for ease of result of use of the present utility model, the utility model also comprises a headset plug 90, and described headset plug 90 is connected with the input of described loudspeaker 20 by an electronic switch 100.
When the utility model does not have electricity, also can by described headset plug 90, connect the receiver J-Horner of audio-frequency playing terminal by closing described electronic switch 100, also can realize the broadcasting of music, make to use portable, the utility model of can making provision against emergencies can also not used while having electricity.
And in the specific implementation, can be any one in mobile phone, MP3, MP4 with the mutually applicable audio-frequency playing terminal of the utility model, wherein, described mobile phone can be i Phone or Android mobile phone, during use, by apple USB line connection the utility model and i Phone, can play music, in like manner, by Android USB line, connect the utility model and Android mobile phone, also can play music, make the utility model meet popular use.
Shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8, described digital signal processing circuit 101 of the present utility model adopts OTK5262 chip, described switch key to adopt AZAW2210F chip, and described audio input channel 50 is arranged at the inside of described AZAW2210F chip;
Wherein, the USB-PROT-D+ pin of described USB interface 30 is connected to the A1 pin of described AZAW2210F chip, and USB-PROT-D-pin is connected to the B1 pin of described AZAW2210F chip; The DA pin of described AZAW2210F chip is connected to the USB-DM pin of described OTK5262 chip, and DB pin is connected to the USB-DP pin of described OTK5262 chip; And the USB-PROT-D+ pin of described USB interface 30 is connected to the base stage of a NPN pipe by a resistance R 308; The grounded emitter of described NPN pipe, collector electrode is connected to 3.3V voltage by resistance R 309 on the one hand, is connected on the other hand the GPIO1/UART0-TX pin of described OTK5262 chip.
The utility model also comprises that one in order to carry out the authentication module 104 of authentication verification to apple USB line, the 1st pin ground connection of described authentication module 104, the 2nd pin is connected to 3.3V voltage by a resistance R 1 on the one hand, be connected on the other hand the GPIO0/UART1-TX pin of described OTK5262 chip, the 6th pin is connected to 3.3V voltage by a resistance R 02 on the one hand, be connected on the other hand the GPIO0/UART1-RX pin of described OTK5262 chip, pass 7 pins and be connected to 3.3V voltage by a resistance R 2, the 8th pin is connected to 3.3V voltage, and the 8th pin is by capacitor C 10 ground connection.
Thereby, by accessing described authentication module 104, can distinguish the USB line of mountain vallage version, antifalse effect is good.
And the utility model also comprises a FLASH memory module 105 in order to storing audio files etc., described FLASH memory module 105 adopts SST25VF512 chip, the SO pin of described SST25VF512 chip is connected to the A22/SPI-DATA1 pin of described OTK5262 chip, SI pin is connected to the A21/SPI-DATA0 pin of described OTK5262 chip, SCK pin is connected to the A20/SPI-CLK pin of described OTK5262 chip, CE pin is connected to the A19/SPI-CS pin of described OTK5262 chip, GND pin ground connection, HOLD pin is connected to the A24/SPI-DATA3 pin of described OTK5262 chip, WP pin is connected to the A23/SPI-DATA2 pin of described OTK5262 chip, VDD pin is connected to 3.3V voltage on the one hand, on the other hand by capacitor C 1 ground connection.
It should be noted that, shown in Fig. 2, the utility model is connecting audio-frequency playing terminal, during as mobile phone, MP4 etc., can be by the detection of described input voltage control circuit, when mobile phone, MP4 even load voltage are during lower than the voltage of supplying cell 70 of the present utility model, the utility model also can oppositely charge to load, make the utility model also can work as portable power source and use, thereby, make of the present utility model with better function.
In sum, the utility model is by being optimized design to circuit structure, the headset plug 90 that replaces original 3.5mm by setting up USB interface 30, directly utilize USB line to connect audio-frequency playing terminal and obtain voice data, make audio transmission speed fast, efficiency is high, and by after voice data processing circuit processes, better from the sound effect of loudspeaker 20 outputs, and because sound field is widened, make the sound dynamic effect of broadcasting better, senior middle school's bass is well arranged, sound stream is dynamic strong, meanwhile, described USB interface 30 can meet the different USB line of connection and use, as apple USB line and Android USB line etc., in use, only need switch broadcast path by switch key 10, use simple, also make strong adaptability.
And, when load voltage is during lower than the voltage of supplying cell 70 of the present utility model, the utility model also can oppositely charge to load, make the utility model also can work as portable power source and use, make of the present utility model with better function, simultaneously, in the specific implementation, and the utility model does not need to increase too many cost, what make that the utility model can be very is welcome, and it must have good market popularization value and use value.
The foregoing is only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; 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. the digital audio decoding general headrest with USB interface, comprise audio input interface, governor circuit and loudspeaker, it is characterized in that, described audio input interface is USB interface, described USB interface is connected by the USB joint of apple USB line or the Android USB line USB access interface corresponding with audio-frequency playing terminal, in order to absorb digital audio and video signals from audio-frequency playing terminal;
Described governor circuit comprises digital signal processing circuit, D/A converting circuit and power amplifier;
Wherein, the input of described digital signal processing circuit is connected with described audio input interface, in order to receive and to process the digital audio and video signals that described audio input interface absorbs;
The input of described D/A converting circuit is connected with the output of described digital signal processing circuit, in order to convert the digital audio and video signals after described digital signal processing circuit is processed to simulated audio signal;
The input of described power amplifier is connected with the output of described D/A converting circuit, in order to the simulated audio signal after D/A converting circuit conversion is amplified; The output of described power amplifier is connected with described loudspeaker, in order to the simulated audio signal after amplifying is exported by described loudspeaker.
2. the digital audio decoding general headrest with USB interface according to claim 1, it is characterized in that: also comprise a switch key and an audio input channel, described audio input channel comprises the first audio input channel and the second audio input channel, described switch key is in order to switch described the first audio input channel and the second audio input channel, and described switch key is connected with described USB interface, described the first audio input channel is connected with described digital signal processing circuit respectively with the second audio input channel; Described the first audio input channel digital audio and video signals that the USB joint by apple USB line absorbs in order to input; Described the second audio input channel digital audio and video signals that the USB joint by Android USB line absorbs in order to input.
3. the digital audio decoding general headrest with USB interface according to claim 1, it is characterized in that: also comprise an earphone charging inlet and a supplying cell, described earphone charging inlet is connected with described supplying cell by a charging circuit, and described supplying cell is connected with described governor circuit.
4. the digital audio decoding general headrest with USB interface according to claim 1, is characterized in that: also comprise a headset plug, described headset plug is connected with the input of described loudspeaker by an electronic switch.
5. the digital audio decoding general headrest with USB interface according to claim 1, is characterized in that: described audio-frequency playing terminal is any one in mobile phone, MP3, MP4.
6. the digital audio decoding general headrest with USB interface according to claim 2, it is characterized in that: described digital signal processing circuit adopts OTK5262 chip, described switch key to adopt AZAW2210F chip, and described audio input channel is arranged at the inside of described AZAW2210F chip;
Wherein, the USB-PROT-D+ pin of described USB interface is connected to the A1 pin of described AZAW2210F chip, and USB-PROT-D-pin is connected to the B1 pin of described AZAW2210F chip; The DA pin of described AZAW2210F chip is connected to the USB-DM pin of described OTK5262 chip, and DB pin is connected to the USB-DP pin of described OTK5262 chip; And the USB-PROT-D+ pin of described USB interface is connected to the base stage of a NPN pipe by a resistance R 308; The grounded emitter of described NPN pipe, collector electrode is connected to 3.3V voltage by resistance R 309 on the one hand, is connected on the other hand the GPIO1/UART0-TX pin of described OTK5262 chip.
7. the digital audio decoding general headrest with USB interface according to claim 6, it is characterized in that: also comprise an authentication module in order to apple USB line is authenticated, the 1st pin ground connection of described authentication module, the 2nd pin is connected to 3.3V voltage by a resistance R 1 on the one hand, be connected on the other hand the GPIO0/UART1-TX pin of described OTK5262 chip, the 6th pin is connected to 3.3V voltage by a resistance R 02 on the one hand, be connected on the other hand the GPIO0/UART1-RX pin of described OTK5262 chip, pass 7 pins and be connected to 3.3V voltage by a resistance R 2, the 8th pin is connected to 3.3V voltage, and the 8th pin is by capacitor C 10 ground connection.
8. the digital audio decoding general headrest with USB interface according to claim 6, it is characterized in that: also comprise a FLASH memory module, described FLASH memory module adopts SST25VF512 chip, the SO pin of described SST25VF512 chip is connected to the A22/SPI-DATA1 pin of described OTK5262 chip, SI pin is connected to the A21/SPI-DATA0 pin of described OTK5262 chip, SCK pin is connected to the A20/SPI-CLK pin of described OTK5262 chip, CE pin is connected to the A19/SPI-CS pin of described OTK5262 chip, GND pin ground connection, HOLD pin is connected to the A24/SPI-DATA3 pin of described OTK5262 chip, WP pin is connected to the A23/SPI-DATA2 pin of described OTK5262 chip, VDD pin is connected to 3.3V voltage on the one hand, on the other hand by capacitor C 1 ground connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420425749.6U CN204014027U (en) | 2014-07-30 | 2014-07-30 | A kind of digital audio decoding general headrest with USB interface |
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| CN201420425749.6U CN204014027U (en) | 2014-07-30 | 2014-07-30 | A kind of digital audio decoding general headrest with USB interface |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104954939A (en) * | 2015-06-03 | 2015-09-30 | 广东欧珀移动通信有限公司 | Power amplifier of earphone and method for controlling power amplifier of earphone |
| CN105228044A (en) * | 2015-09-28 | 2016-01-06 | 惠州Tcl移动通信有限公司 | A kind of harmless tonequality earphone |
| CN105263076A (en) * | 2015-10-21 | 2016-01-20 | 广东欧珀移动通信有限公司 | Balanced headphone based on USB-C plug and mobile terminal |
| CN105554611A (en) * | 2014-12-29 | 2016-05-04 | 北京小鸟听听科技有限公司 | Earphone and implementation method thereof |
| CN106851479A (en) * | 2017-02-13 | 2017-06-13 | 维沃移动通信有限公司 | A kind of audio playing apparatus and method |
| WO2017185602A1 (en) * | 2016-04-29 | 2017-11-02 | 乐视控股（北京）有限公司 | Earphone mode switching method and electronic device |
| CN108989940A (en) * | 2018-10-30 | 2018-12-11 | 努比亚技术有限公司 | Bluetooth headset function is compatible with implementation method, device, bluetooth headset and storage medium |
| CN109313494A (en) * | 2017-03-09 | 2019-02-05 | 华为技术有限公司 | Earphone, terminal and control method |
| CN113507538A (en) * | 2021-09-02 | 2021-10-15 | 深圳市微健科技有限公司 | Audio accessory capable of automatically being compatible with charging and audio transmission of apple android device |
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2014
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105554611A (en) * | 2014-12-29 | 2016-05-04 | 北京小鸟听听科技有限公司 | Earphone and implementation method thereof |
| CN104954939A (en) * | 2015-06-03 | 2015-09-30 | 广东欧珀移动通信有限公司 | Power amplifier of earphone and method for controlling power amplifier of earphone |
| CN104954939B (en) * | 2015-06-03 | 2018-09-04 | 广东欧珀移动通信有限公司 | A kind of control method of earphone power amplifier and earphone power amplifier |
| CN105228044A (en) * | 2015-09-28 | 2016-01-06 | 惠州Tcl移动通信有限公司 | A kind of harmless tonequality earphone |
| CN105263076B (en) * | 2015-10-21 | 2018-04-03 | 广东欧珀移动通信有限公司 | A kind of balanced type earphone and mobile terminal based on USB C plugs |
| CN105263076A (en) * | 2015-10-21 | 2016-01-20 | 广东欧珀移动通信有限公司 | Balanced headphone based on USB-C plug and mobile terminal |
| WO2017185602A1 (en) * | 2016-04-29 | 2017-11-02 | 乐视控股（北京）有限公司 | Earphone mode switching method and electronic device |
| CN106851479A (en) * | 2017-02-13 | 2017-06-13 | 维沃移动通信有限公司 | A kind of audio playing apparatus and method |
| CN109313494A (en) * | 2017-03-09 | 2019-02-05 | 华为技术有限公司 | Earphone, terminal and control method |
| US10951973B2 (en) | 2017-03-09 | 2021-03-16 | Huawei Technologies Co., Ltd. | Headset, terminal, and control method |
| CN109313494B (en) * | 2017-03-09 | 2021-05-18 | 华为技术有限公司 | Earphone, terminal and control method |
| CN108989940A (en) * | 2018-10-30 | 2018-12-11 | 努比亚技术有限公司 | Bluetooth headset function is compatible with implementation method, device, bluetooth headset and storage medium |
| CN113507538A (en) * | 2021-09-02 | 2021-10-15 | 深圳市微健科技有限公司 | Audio accessory capable of automatically being compatible with charging and audio transmission of apple android device |
| CN113507538B (en) * | 2021-09-02 | 2022-06-10 | 深圳市微健科技有限公司 | Audio accessory capable of automatically being compatible with charging and audio transmission of apple android device |
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