CN214045987U - Bluetooth audio adapter and audio playback device - Google Patents
Bluetooth audio adapter and audio playback device Download PDFInfo
- Publication number
- CN214045987U CN214045987U CN202121529366.XU CN202121529366U CN214045987U CN 214045987 U CN214045987 U CN 214045987U CN 202121529366 U CN202121529366 U CN 202121529366U CN 214045987 U CN214045987 U CN 214045987U
- Authority
- CN
- China
- Prior art keywords
- peripheral
- interface
- determining unit
- control module
- bluetooth audio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Telephone Function (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The embodiment of the utility model discloses bluetooth audio frequency adapter and audio playback equipment. This bluetooth audio frequency adapter includes: the peripheral equipment comprises a peripheral equipment determining module and a control module; the peripheral determining module comprises a first peripheral state determining unit and a second peripheral state determining unit; the first peripheral state determining unit and the second peripheral state determining unit are respectively in communication connection with the control module, and are used for outputting corresponding signals to the control module after the Bluetooth audio adapter is powered on; the control module is used for determining the external equipment corresponding to the Bluetooth audio adapter according to the received signals output by the first peripheral state determining unit and the second peripheral state determining unit so as to provide audio signals for the external equipment through the Bluetooth audio adapter. The utility model discloses technical scheme to realize the peripheral hardware of the multiple difference of nimble adaptation, simple manufacture just reduces the cost of manufacture.
Description
Technical Field
The embodiment of the utility model provides a relate to audio playback technical field, especially relate to a bluetooth audio adapter and audio playback equipment.
Background
With the development of wireless technology and the improvement of the living standard of people, a plurality of electronic devices are provided with a Bluetooth device, for example, a Bluetooth music player is added with a Bluetooth communication function on the basis of a common music player, so that the music player can communicate with other Bluetooth peripherals through a Bluetooth protocol, and the functions of wireless music playing, wireless communication and the like are realized.
However, different bluetooth devices are generally required to adapt to different peripheral terminals at present to correspond to different peripheral terminals, and meanwhile, corresponding supporting software is provided for different bluetooth devices, so that the complexity of mass production is high, the manufacturing period is long, the whole manufacturing process is separated, and the manufacturing cost is high.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a bluetooth audio frequency adapter and audio playback equipment to realize the peripheral hardware of the multiple difference of nimble adaptation, simple manufacture just reduces the cost of manufacture.
In a first aspect, an embodiment of the present invention provides a bluetooth audio adapter, which includes:
the peripheral equipment comprises a peripheral equipment determining module and a control module; the peripheral determining module comprises a first peripheral state determining unit and a second peripheral state determining unit;
the first peripheral state determining unit and the second peripheral state determining unit are respectively in communication connection with the control module, and are used for outputting corresponding signals to the control module after the Bluetooth audio adapter is powered on;
the control module is used for determining the external equipment corresponding to the Bluetooth audio adapter according to the received signals output by the first peripheral state determining unit and the second peripheral state determining unit so as to provide audio signals for the external equipment through the Bluetooth audio adapter.
Optionally, the first peripheral state determination unit is in communication connection with a first signal input end of the control module through a first signal output end;
and the second external state determining unit is in communication connection with a second signal input end of the control module through a second signal output end.
Optionally, the first peripheral state determination unit includes a first resistor and a second resistor; the first end of the first resistor is in communication connection with a power supply end, the second end of the first resistor is in communication connection with the first end of the second resistor and the first signal output end respectively, the first end of the second resistor is in communication connection with the first signal output end, and the second end of the second resistor is grounded;
the second external state determining unit comprises a third resistor and a fourth resistor; the first end and the power supply end communication connection of third resistance, the second end of third resistance respectively with the first end of fourth resistance with second signal output part communication connection, the second end ground connection of fourth resistance.
Optionally, the first signal output end is a general input/output interface, and the second signal output end is a general input/output interface.
Optionally, the control module further includes a peripheral connection unit, where the peripheral connection unit includes a signal input interface, a left channel output interface, a right channel output interface, an audio common mode interface, a ground interface, and a charging power interface.
Optionally, the first peripheral state determining unit and the second peripheral state determining unit output high level signals, and the control module determines that the external device corresponding to the bluetooth audio adapter is a first external device, so as to connect the signal input interface, the left channel output interface, the right channel output interface, and the audio common mode interface with the first external device, respectively;
the first peripheral state determining unit and the second peripheral state determining unit output low level signals, and the control module determines that the external device corresponding to the bluetooth audio adapter is a second external device, so as to connect the signal input interface, the left channel output interface, the right channel output interface, the audio common mode interface, the ground interface, and the charging power interface with the second external device respectively;
the first peripheral state determining unit outputs a low level signal, the second peripheral state determining unit outputs a high level signal, and the control module determines that the external device corresponding to the Bluetooth audio adapter is a third external device, so as to connect the signal input interface, the left channel output interface, the right channel output interface, the audio common mode interface and the ground interface with the third external device respectively.
Optionally, the control module further includes a configuration environment interface, configured to perform an inspection test on the control module.
Optionally, the control module further includes an antenna interface, a first capacitor, and a second capacitor;
the antenna interface is electrically connected with the first end of the first capacitor, the second end of the first capacitor is electrically connected with the first end of the second capacitor and the antenna respectively, the first end of the second capacitor is electrically connected with the antenna, and the second end of the second capacitor is grounded.
Optionally, the bluetooth audio adapter further includes a charging protocol communication module, configured to control the bluetooth audio adapter to send a charging start-stop instruction to the external device.
In a second aspect, the embodiment of the present invention further provides an audio playing device, which includes the present invention, an embodiment of the first aspect provides a bluetooth audio adapter.
The technical scheme of the embodiment of the utility model, this bluetooth audio frequency adapter includes: the peripheral equipment comprises a peripheral equipment determining module and a control module; the peripheral determining module comprises a first peripheral state determining unit and a second peripheral state determining unit; the first peripheral state determining unit and the second peripheral state determining unit are respectively in communication connection with the control module, and are used for outputting corresponding signals to the control module after the Bluetooth audio adapter is powered on; the control module is used for determining the external equipment corresponding to the Bluetooth audio adapter according to the received signals output by the first peripheral state determining unit and the second peripheral state determining unit so as to provide audio signals for the external equipment through the Bluetooth audio adapter. The problem of need different bluetooth device in order to correspond different peripheral terminals usually for adapting to different peripheral terminals among the prior art, its volume production complexity is great, and the preparation cycle is longer, and the cost of manufacture is high is solved to realize the multiple different peripherals of nimble adaptation, simple manufacture just reduces the cost of manufacture.
Drawings
Fig. 1 is a schematic diagram of different peripherals respectively connected with different corresponding terminal devices;
fig. 2 is a schematic structural diagram of a bluetooth audio adapter according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a first peripheral status determining unit and a second peripheral status determining unit provided by an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a control module according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the following describes in detail specific embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention.
The utility model discloses in, peripheral equipment is peripheral hardware for short, and peripheral equipment can be audio playback equipment such as wired earphone, bluetooth headset, and conventional peripheral hardware entity contains button, electret microphone and 2 32 ohm loudspeaker of three analog-to-digital converter (ADC promptly). After the external device is connected to the terminal device, the terminal device outputs audio to the external device, the terminal device can execute corresponding audio operation through the detected ADC value input by the external device key, and also can execute corresponding audio operation through a voice signal collected by an external device microphone. It can be understood that the terminal device here may be an intelligent terminal device such as a mobile phone, a computer, a tablet, and the like, or may also be a device such as a television, a projector, and the like, and this embodiment does not limit the terminal device at all.
Taking a device a, a device B, and a device C as examples, fig. 1 is a schematic diagram illustrating that different peripherals are respectively connected with different corresponding terminal devices, the device a is a terminal device corresponding to the peripheral a, and since the peripheral a needs to be connected with 5 welding points on a pad of the device a through 5 welding lines, exemplarily, the peripheral a may be a line control type earphone, the device a is a mobile phone, see fig. 1, the peripheral a is directly connected with the corresponding 5 welding points on the device a through 5 welding lines; the device B is a terminal device corresponding to the peripheral B, and the peripheral B needs to be connected to 4 welding points on a pad of the device B through 4 welding wires, for example, the peripheral B may be a wire-controlled earphone, and the device B is a mobile phone, referring to fig. 1, since the peripheral B cannot directly implement data interaction with the device B, an additional patch cord needs to be added for connection, and the peripheral B realizes that the 4 welding wires are correspondingly connected to the 4 welding points on the device B through the patch cord; device C is the terminal equipment who corresponds with peripheral C, because peripheral C need realize through 7 bonding wires with device C's the pad on 7 welding points be connected, exemplarily, peripheral C can be drive-by-wire earphone, device C is the cell-phone, refer to fig. 1, because peripheral C can't directly realize data interaction with device C, then need add extra patch cord and connect, in order to realize device C's the demand of function of charging simultaneously, then through the application of multi-functional converter, peripheral C realizes through the cooperation of patch cord and converter that 7 bonding wires correspond with device C on the corresponding 7 welding points and be connected.
Therefore, the connection between the terminal equipment and the peripheral equipment at present needs to be correspondingly connected with different terminal equipment according to different peripheral equipment, the complexity of mass production is high, the investment of hardware and software is large, the manufacturing period is long, meanwhile, the one-to-many use cannot be realized, and the cost investment is large. Based on the problems, the scheme provides a Bluetooth audio adapter and audio playing equipment, so that the terminal equipment can be flexibly adapted to various different peripherals on the basis of not additionally increasing too much hardware and software cost, and meanwhile, the Bluetooth audio adapter and the audio playing equipment are simple to manufacture and the manufacturing cost is reduced.
Fig. 2 is the embodiment of the utility model provides a pair of bluetooth audio frequency adapter's structural schematic diagram, this embodiment is applicable to for providing the condition of bluetooth wireless transmission and audio frequency wired transmission between terminal equipment and the peripheral hardware. This bluetooth audio frequency adapter specifically includes following structure:
the first peripheral state determining unit 111 and the second peripheral state determining unit 112 are respectively in communication connection with the control module 120, and the first peripheral state determining unit 111 and the second peripheral state determining unit 112 are configured to output corresponding signals to the control module 120 after the bluetooth audio adapter 100 is powered on;
the control module 120 is configured to determine the external device 200 corresponding to the bluetooth audio adapter 100 according to the received signals output by the first peripheral status determining unit 111 and the second peripheral status determining unit 112, so as to provide an audio signal to the external device 200 through the bluetooth audio adapter 100.
The peripheral determining module 110 is configured to determine the external device 200 corresponding to the currently accessed bluetooth audio adapter 100, where a first peripheral state determining unit 111 and a second peripheral state determining unit 112 included in the peripheral determining module 110 respectively output signals to the control module 120, that is, the first peripheral state determining unit 111 and the second peripheral state determining unit 112 respectively output high and low level signals, that is, signals output by the first peripheral state determining unit 111 and the second peripheral state determining unit 112 are used to mark different external devices 200.
After the bluetooth audio adapter 100 is powered on, the first peripheral state determining unit 111 outputs a high-low level signal to the control module 120, the second peripheral state determining unit 112 outputs a high-low level signal to the control module 120, and the control module 120 determines the external device 200 connected correspondingly through the high-low level signal output by the first peripheral state determining unit 111 and the high-low level signal output by the second peripheral state determining unit 112.
On the basis of the above embodiment, the bluetooth audio adapter 100 further includes a USB interface, the bluetooth audio adapter 100 is connected to the terminal device through the USB interface, that is, the terminal device is connected to the bluetooth audio adapter 100, the bluetooth audio adapter 100 is powered on, and further, after the bluetooth audio adapter 100 is powered on, the bluetooth audio adapter is in communication connection with the external device 200 through bluetooth broadcast.
Optionally, the control module 120 is implemented by using a YC1168 chip, or may also use chips of other types, and the specific implementation manner of the control module 120 is not limited in this embodiment.
Further, on the basis of the above embodiment, with continuing reference to fig. 2, the first peripheral status determining unit 111 is communicatively connected to the first signal input terminal 12 of the control module 120 through the first signal output terminal 11;
the second peripheral status determining unit 112 is communicatively connected to the second signal input 22 of the control module 120 via the second signal output 21.
Specifically, the first peripheral state determining unit 111 outputs a signal through a first signal output end 11, and a first signal input end 12 of the control module 120 receives the signal output by the first peripheral state determining unit 111 through the first signal output end 11; the second external state determination unit 112 outputs a signal through the second signal output terminal 21, and the second signal input terminal 22 of the control module 120 receives the signal output by the second external state determination unit 112 through the second signal output terminal 21.
It can be understood that the first peripheral status determining unit 111 and the second peripheral status determining unit 112 are in communication connection with the control module 120, and specifically, the first peripheral status determining unit and the second peripheral status determining unit may be electrically connected in a wired manner, and may also perform data bluetooth transmission in a bluetooth manner, and this embodiment does not limit a specific data signal interaction manner.
Fig. 3 is a schematic structural diagram of a first peripheral state determining unit and a second peripheral state determining unit provided in an embodiment of the present invention, referring to fig. 3, on the basis of the above embodiment, the first peripheral state determining unit 111 includes a first resistor R1 and a second resistor R2; a first end of the first resistor R1 is connected with a power supply terminal in communication, a second end of the first resistor R1 is respectively connected with a first end of the second resistor R2 and the first signal output terminal 11 in communication, a first end of the second resistor R2 is connected with the first signal output terminal 11 in communication, and a second end of the second resistor R2 is connected with the ground;
the second peripheral state determining unit 112 includes a third resistor R3 and a fourth resistor R4; the first end of the third resistor R3 is connected with the power supply end in a communication manner, the second end of the third resistor R3 is respectively connected with the first end of the fourth resistor R4 and the second signal output end 21 in a communication manner, the first end of the fourth resistor R4 is connected with the second signal output end 21 in a communication manner, and the second end of the fourth resistor R4 is connected with the ground.
The power supply terminal is a port for the terminal device to access the bluetooth audio adapter 100, that is, the bluetooth audio adapter 100 is powered on, and the power supply terminal can provide a 3.3V power supply.
Optionally, the resistances of the first resistor R1, the second resistor R2, the third resistor R3, and the fourth resistor R4 are all 1k Ω.
With continued reference to fig. 2 and 3, the first peripheral state determining unit 111 controls the first peripheral state determining unit 111 to output a high-low level signal to the control module 120 by pulling up a high or a low ground through the first resistor R1 and the second resistor R2; the second external state determining unit 112 is pulled up to be connected to high or pulled down to be grounded through the third resistor R3 and the fourth resistor R4, and controls the second external state determining unit 112 to output a high/low level signal to the control module 120, thereby determining the external device 200 connected correspondingly.
In order to ensure that the control module 120 can accurately identify the signal output by the peripheral determining module 110, optionally, the first signal output terminal is a general purpose input/output interface (i.e., a GPIO interface), and the second signal output terminal is a general purpose input/output interface (i.e., a GPIO interface).
Illustratively, when the general purpose input/output interface (i.e., the GPIO interface) is pulled up and connected high, the first signal output terminal outputs a high level signal, which is identified as 1, and when the general purpose input/output interface (i.e., the GPIO interface) is pulled down and connected to ground, the first signal output terminal outputs a low level signal, which is identified as 0; similarly, when the general purpose input/output interface (i.e. GPIO interface) is pulled up and connected high, the second signal output terminal outputs a high level signal, which is identified as 1, and when the general purpose input/output interface (i.e. GPIO interface) is pulled down and connected to ground, the second signal output terminal outputs a low level signal, which is identified as 0.
Because bluetooth audio adapter 100 of this application needs to be applicable to different peripheral hardware, then correspond and need to realize the required function of different peripheral hardware, fig. 4 is the utility model discloses control module's that the embodiment provided structural schematic diagram, see fig. 4, on the basis of above-mentioned embodiment, control module 120 still includes peripheral hardware linkage unit 130, peripheral hardware linkage unit 130 includes signal input interface 31, left sound channel output interface 32, right sound channel output interface 33, audio frequency common mode interface 34, ground connection interface 35 and charging source interface 36.
Specifically, the sound input and the key input of the peripheral microphone are realized through the conduction of the signal input interface 31, the output of a peripheral left sound channel is realized through the communication of the left sound channel output interface 32, the output of a peripheral right sound channel is realized through the communication of the right sound channel output interface 33, the audio common mode of the peripheral is realized through the communication of the audio common mode interface 34, the charging input of the peripheral is realized through the communication of the charging power supply interface 35, and optionally, the charging 5V input is controlled through the communication of the charging power supply interface 36.
It is understood that, after determining the external device 200 correspondingly connected, one or more of the signal input interface 31, the left channel output interface 32, the right channel output interface 33, the audio common mode interface 34, the ground interface 35 and the charging power interface 36 are selected and communicated to realize the corresponding functions thereof only according to the functions required by the determined external device 200.
The signal input interface 31 is respectively connected to a first end of a fifth resistor R5 and a first end of a third capacitor C3 in communication, a second end of the fifth resistor R5 is connected to a corresponding interface of the control module 120 in communication, and a second end of the third capacitor C3 is connected to a corresponding interface of the control module 120 in communication.
Optionally, the resistance of the fifth resistor R5 is 1.5K Ω, and the fifth resistor R5 is used as a pull-up resistor to perform current limiting and voltage dividing functions; the capacitance value of the third capacitor C3 is 0.1uF, and the third capacitor C3 plays a role of a separation value.
The audio common mode interface 34 may further be externally connected with a fourth capacitor C4, a capacitance value of the fourth capacitor C4 is 0.1uF, and the fourth capacitor C4 serves as a decoupling capacitor to perform a voltage stabilizing function.
Further, on the basis of the above embodiment, the first peripheral state determining unit and the second peripheral state determining unit output high level signals, and the control module determines that the external device corresponding to the bluetooth audio adapter is a first external device, so as to connect the signal input interface, the left channel output interface, the right channel output interface, and the audio common mode interface with the first external device, respectively;
the first peripheral state determining unit and the second peripheral state determining unit output low level signals, and the control module determines that the external device corresponding to the bluetooth audio adapter is a second external device, so as to connect the signal input interface, the left channel output interface, the right channel output interface, the audio common mode interface, the ground interface, and the charging power interface with the second external device respectively;
the first peripheral state determining unit outputs a low level signal, the second peripheral state determining unit outputs a high level signal, and the control module determines that the external device corresponding to the Bluetooth audio adapter is a third external device, so as to connect the signal input interface, the left channel output interface, the right channel output interface, the audio common mode interface and the ground interface with the third external device respectively.
It should be noted that, the descriptions of the first external device, the second external device, and the third external device in this embodiment are only exemplary explanations, and do not limit any external device that can be externally connected in this embodiment.
On the basis of the above embodiment, the control module further includes a configuration environment interface for performing an inspection test on the control module.
The configuration environment interface is used for checking and testing the function realization of the control module so as to realize the feedback of the working condition of the control module.
Because bluetooth audio frequency adapter and terminal equipment and external equipment carry out communication connection, then smooth and easy for guaranteeing the communication between the three, can increase the antenna in bluetooth audio frequency adapter department to improve communication quality. With continued reference to fig. 4, based on the above embodiment, the control module 120 further includes an antenna interface 37, a first capacitor C1 and a second capacitor C2;
the antenna interface 37 is electrically connected to a first terminal of the first capacitor C1, a second terminal of the first capacitor C1 is electrically connected to a first terminal of the second capacitor C2 and the antenna, respectively, a first terminal of the second capacitor C2 is electrically connected to the antenna, and a second terminal of the second capacitor C2 is grounded.
The first capacitor C1 and the second capacitor C2 are decoupling capacitors and perform a voltage stabilizing function.
Further, on the basis of the above embodiment, the bluetooth audio adapter further includes a charging protocol communication module, configured to control the bluetooth audio adapter to send a charging start/stop instruction to the external device.
The charging protocol communication module can be realized through an independent chip, and when the external equipment needs to be charged, the charging protocol communication function, namely the charging function, needs to be started to ensure that the charging communication between the Bluetooth audio adapter and the external equipment is normal, so that the charging of the external equipment is realized.
The utility model discloses bluetooth audio adapter, confirm unit through first peripheral hardware state and second peripheral hardware state and confirm resistance in the unit and connect high or ground connection, realize the compatible multiple peripheral hardware of same bluetooth audio adapter, the unified production of whole set of board on the bluetooth audio adapter preparation flow, simultaneously, through the inside interface control of its bluetooth audio adapter, further realize the function that different peripheral hardware correspond to realize software and peripheral hardware function matching, simple manufacture and preparation cycle are short, practice thrift the cost.
The embodiment of the utility model provides a still provide an audio playback equipment, this audio playback equipment includes the utility model discloses the embodiment of the first aspect provides bluetooth audio adapter. It can be understood that the bluetooth audio adapter of the present application may be an independent device, that is, electrically connected or communicatively connected to an audio playing device, to obtain a complete audio playing device; the bluetooth audio adapter and the audio playing device can also be manufactured as a whole for use, and this embodiment does not limit this.
The technical scheme of the embodiment of the utility model, this bluetooth audio frequency adapter includes: the peripheral equipment comprises a peripheral equipment determining module and a control module; the peripheral determining module comprises a first peripheral state determining unit and a second peripheral state determining unit; the first peripheral state determining unit and the second peripheral state determining unit are respectively in communication connection with the control module, and are used for outputting corresponding signals to the control module after the Bluetooth audio adapter is powered on; the control module is used for determining the external equipment corresponding to the Bluetooth audio adapter according to the received signals output by the first peripheral state determining unit and the second peripheral state determining unit so as to provide audio signals for the external equipment through the Bluetooth audio adapter. The problem of need different bluetooth device in order to correspond different peripheral terminals usually for adapting to different peripheral terminals among the prior art, its volume production complexity is great, and the preparation cycle is longer, and the cost of manufacture is high is solved to realize the multiple different peripherals of nimble adaptation, simple manufacture just reduces the cost of manufacture.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A bluetooth audio adapter, comprising:
the peripheral equipment comprises a peripheral equipment determining module and a control module; the peripheral determining module comprises a first peripheral state determining unit and a second peripheral state determining unit;
the first peripheral state determining unit and the second peripheral state determining unit are respectively in communication connection with the control module, and are used for outputting corresponding signals to the control module after the Bluetooth audio adapter is powered on;
the control module is used for determining the external equipment corresponding to the Bluetooth audio adapter according to the received signals output by the first peripheral state determining unit and the second peripheral state determining unit so as to provide audio signals for the external equipment through the Bluetooth audio adapter.
2. The bluetooth audio adapter according to claim 1, wherein the first peripheral status determining unit is communicatively connected to a first signal input of the control module via a first signal output;
and the second external state determining unit is in communication connection with a second signal input end of the control module through a second signal output end.
3. The bluetooth audio adapter according to claim 2, characterized in that the first peripheral state determination unit comprises a first resistor and a second resistor; the first end of the first resistor is in communication connection with a power supply end, the second end of the first resistor is in communication connection with the first end of the second resistor and the first signal output end respectively, the first end of the second resistor is in communication connection with the first signal output end, and the second end of the second resistor is grounded;
the second external state determining unit comprises a third resistor and a fourth resistor; the first end and the power supply end communication connection of third resistance, the second end of third resistance respectively with the first end of fourth resistance with second signal output part communication connection, the second end ground connection of fourth resistance.
4. The bluetooth audio adapter according to claim 2, wherein the first signal output terminal is a general purpose input output interface, and the second signal output terminal is a general purpose input output interface.
5. The bluetooth audio adapter according to claim 1, wherein the control module further comprises a peripheral connection unit, and the peripheral connection unit comprises a signal input interface, a left channel output interface, a right channel output interface, an audio common mode interface, a ground interface, and a charging power interface.
6. The bluetooth audio adapter according to claim 5, wherein the first peripheral status determining unit and the second peripheral status determining unit output high level signals, and the control module determines that the external device corresponding to the bluetooth audio adapter is a first external device, so as to connect the signal input interface, the left channel output interface, the right channel output interface, and the audio common mode interface with the first external device, respectively;
the first peripheral state determining unit and the second peripheral state determining unit output low level signals, and the control module determines that the external device corresponding to the bluetooth audio adapter is a second external device, so as to connect the signal input interface, the left channel output interface, the right channel output interface, the audio common mode interface, the ground interface, and the charging power interface with the second external device respectively;
the first peripheral state determining unit outputs a low level signal, the second peripheral state determining unit outputs a high level signal, and the control module determines that the external device corresponding to the Bluetooth audio adapter is a third external device, so as to connect the signal input interface, the left channel output interface, the right channel output interface, the audio common mode interface and the ground interface with the third external device respectively.
7. The bluetooth audio adapter according to claim 1, wherein the control module further comprises a configuration environment interface for performing an inspection test on the control module.
8. The bluetooth audio adapter of claim 1, wherein the control module further comprises an antenna interface, a first capacitor, and a second capacitor;
the antenna interface is electrically connected with the first end of the first capacitor, the second end of the first capacitor is electrically connected with the first end of the second capacitor and the antenna respectively, the first end of the second capacitor is electrically connected with the antenna, and the second end of the second capacitor is grounded.
9. The bluetooth audio adapter according to claim 1, wherein the bluetooth audio adapter further comprises a charging protocol communication module, configured to control the bluetooth audio adapter to send a charging start/stop instruction to the external device.
10. An audio playback device, characterized in that the audio playback device comprises a bluetooth audio adapter according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121529366.XU CN214045987U (en) | 2021-07-07 | 2021-07-07 | Bluetooth audio adapter and audio playback device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121529366.XU CN214045987U (en) | 2021-07-07 | 2021-07-07 | Bluetooth audio adapter and audio playback device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214045987U true CN214045987U (en) | 2021-08-24 |
Family
ID=77348576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121529366.XU Active CN214045987U (en) | 2021-07-07 | 2021-07-07 | Bluetooth audio adapter and audio playback device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214045987U (en) |
-
2021
- 2021-07-07 CN CN202121529366.XU patent/CN214045987U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2597844A1 (en) | Method and device for sharing micro-usb interface between earphone and usb | |
| WO2015165345A1 (en) | Transmission method, mobile terminal, multi-channel earphone, and audio playing system | |
| TWI507974B (en) | Electronic device, accessory, and method for detecting an accessory | |
| TW201019123A (en) | Signal transmission path selecting circuit and method and electronic device applying the circuit | |
| CN109660894B (en) | Terminal peripheral and audio signal transmission method | |
| JP3213242U (en) | Composite earphone | |
| CN104244160A (en) | Electronic device capable of being debugged through earphone port | |
| WO2019072252A1 (en) | Terminal, terminal peripheral, signal transmission system and signal sending and receiving method | |
| WO2015007170A1 (en) | Apparatus and method for identifying audio interface pin, and terminal | |
| CN210694324U (en) | Multifunctional TWS Bluetooth earphone | |
| CN201898602U (en) | Passive sound box interface of mobile phone | |
| CN214045987U (en) | Bluetooth audio adapter and audio playback device | |
| CN212517830U (en) | Multifunctional switching device | |
| CN205159720U (en) | USB -Type -C interface converter | |
| CN108810685B (en) | Digital microphone | |
| US11593058B2 (en) | Portable audio device case with power-saving features | |
| CN209170600U (en) | A kind of USB Microphone conventer | |
| CN113206906A (en) | Electronic equipment assembly and digital earphone | |
| TWI702854B (en) | Audio playing apparatus and audio transmission circuit | |
| CN108449685B (en) | Pickup and guitar | |
| CN219876065U (en) | Microphone switching circuit and earphone | |
| CN203912159U (en) | USB and audio multiplexing line and Bluetooth sound box circuit | |
| CN110248271A (en) | The playback method being wirelessly transferred using wireless headset | |
| CN111182147A (en) | Terminal comprising multiple types of earphone interfaces, terminal control method and device | |
| CN206135136U (en) | Data line of voiced sound source conversion functions and DC earphone interface |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |