CN112492433B - Charging box, wireless earphone and wireless earphone charging system - Google Patents

Abstract

The embodiment of the present application discloses a charging box, a wireless earphone and a wireless earphone charging system. The charging box includes: a chip system, a first switch, a second switch, a first electrode and a second electrode, a charging port, the chip The system includes a UART and an MCU, the MCU is connected to the UART, the signal receiving port of the UART is connected to the first selection end of the first switch, and the signal sending port of the UART is connected to the second selection end of the first switch. terminal; the common terminal of the first switch is connected to the first selection terminal of the second switch, the charging port is connected to the second selection terminal of the second switch, and the common terminal of the second switch is connected to the first selection terminal of the second switch. One electrode, the second electrode is grounded; the MCU is used to control the first switch to switch between the data receiving function and the data sending function, and to control the second switch to switch between the data communication mode and the charging mode. . Using this application, the charging box has a simple structure and convenient function switching.

Description

A charging box, wireless earphones and wireless earphone charging system

Technical field

The present application relates to the field of electronic technology, and in particular, to a charging box, wireless earphones and a wireless earphone charging system.

Background technique

With the popularity of wireless earphones, people have higher and higher requirements for wireless earphones and charging boxes for charging wireless earphones. Not only is the charging box required to charge the wireless earphones, but it is also required that the two can communicate. In order to make the appearance of the charging box simple and beautiful and save resources, the structural design of double thimbles is often used in the market.

In the structural design of double thimbles, the two thimbles are the positive and negative poles respectively. This structure determines that the communication method between the charging box and the earphones is a single line, and the charging line and communication line must be shared. However, in fact, the charging box of this design only has the charging function and does not have the function of communicating with the earphones.

However, if three or more thimbles are used, not only will the structure look extremely complicated, but it will not be simple and beautiful enough, and it will also lead to a reduction in user experience. How to adopt a double-ejector pin structural design for the charging box, while maintaining the beauty of the product, while also realizing the two-way communication function between the charging box and the earphones, improving the user's experience of using the product.

Contents of the invention

Embodiments of the present application provide a charging box, a wireless earphone, and a wireless earphone charging system.

In a first aspect, embodiments of the present application provide a charging box, including a chip system, a first switch, a second switch, a first electrode and a second electrode, and a charging port. The chip system includes a universal asynchronous receiver and transmitter (UART) and a Microcontroller unit MCU,

The MCU is connected to the UART, the signal receiving port of the UART is connected to the first selection end of the first switch, the signal sending port of the UART is connected to the second selection end of the first switch, and the first The common end of the switch is connected to the first selection end of the second switch, the charging port is connected to the second selection end of the second switch, the common end of the second switch is connected to the first electrode, and the third The two electrodes are grounded, the first signal port of the MCU is connected to the control port of the first switch, and the second signal port of the MCU is connected to the control port of the second switch;

The MCU is used to send a transceiver switching signal to the first switch to control the first switch to switch between a data receiving function and a data sending function, and is used to switch the first switch to a data receiving function when the first switch is switched to a data receiving function. , sending a mode switching signal to the second switch to control the second switch to switch between the data communication mode and the charging mode.

It can be seen that the embodiment of the present application can realize the communication function of the charging box through the connection of MCU and UART; and through the use of two single-pole double-throw switches, the MCU can realize switching of the data sending and receiving functions of the charging box through the first switch. ; The charging box mode can be switched through the second switch. In addition, the common terminal of the second switch is connected to the first electrode through a single bus VBUS, and data exchange with other devices is realized through the first electrode, thereby realizing the multiplexing of communication function and charging function. That is to say, the charging box realizes switching between data communication mode and charging mode, as well as switching between data receiving function and data sending function through a single bus VBUS. Moreover, single-line communication is realized based on the UART of the hardware itself, which makes software development less difficult than I/O simulation. The structure is simple and beautiful, and the operation is convenient.

In a second aspect, embodiments of the present application also provide a wireless headset, including a chip system, a first switch, a second switch, a synchronous switching circuit, a first power level and a second power level, and a charging port. The chip system includes Universal asynchronous receiver and transmitter UART, micro control unit MCU,

The MCU is connected to the UART, the signal receiving port of the UART is connected to the first selection end of the second switch, the signal sending port of the UART is connected to the second selection end of the second switch, and the second The common end of the switch is connected to the first selection end of the first switch, the second selection end of the first switch is connected to the charging port, the common end of the first switch is connected to the first electrical level, and the second selection end of the first switch is connected to the charging port. The two electrodes are grounded, and the signal control port of the MCU is connected to the signal receiving port of the second switch;

One end of the synchronous switching circuit is connected to the first electrical level, and the other end of the synchronous switching circuit is connected to the signal receiving port of the first switch.

The MCU is used to control the second switch to switch the data receiving function and the data sending function of the wireless headset.

In a third aspect, embodiments of the present application provide a wireless earphone charging system, including the above charging box and the above wireless earphone.

Description of the drawings

In order to explain the embodiments of the present application or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1-A is a schematic structural diagram of a charging box provided by an embodiment of the present application;

Figure 1-B is a schematic circuit structure diagram of a charging box provided by an embodiment of the present application;

Figure 2-A is a schematic structural diagram of a wireless earphone provided by an embodiment of the present application;

Figure 2-B is a schematic circuit structure diagram of a wireless earphone provided by an embodiment of the present application;

Figure 3-A is a schematic structural diagram of a wireless earphone charging system provided by an embodiment of the present application;

Figure 3-B is a schematic circuit structure diagram of a wireless earphone charging system provided by an embodiment of the present application;

Figure 3-C is a schematic diagram of information interaction of a wireless earphone charging system provided by an embodiment of the present application;

Figure 4-A is a schematic diagram of the communication network topology of a wireless headset charging system provided by an embodiment of the present application;

Figure 4-B is a schematic diagram of the communication network topology of another wireless earphone charging system provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

The terms "first", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than describing a specific sequence. Furthermore, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes Other steps or units inherent to such processes, methods, products or devices.

Reference herein to "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.

The current charging box for wireless earphones includes two ejector pins, three ejector pins, and five ejector pins. But the more thimbles there are, the more cumbersome the structure becomes. Therefore, the headphones produced by many wireless headphone manufacturers adopt a double-ejector pin structure design. In the double ejector pin structural design, the two ejector pins are the positive and negative poles respectively. This structure determines that the communication method between the charging box and the earphones is a single line, and the charging line and communication line must be shared. However, in fact, the charging box of this design only has the charging function and does not have the function of communicating with the earphones.

However, if three or more thimbles are used, not only will the structure look extremely complicated, but it will not be simple and beautiful enough, and it will also lead to a reduction in user experience. How to adopt a double-ejector pin structural design for the charging box, while maintaining the beauty of the product, while also realizing the two-way communication function between the charging box and the earphones, improving the user's experience of using the product.

To address the above problems, embodiments of the present application provide a charging box, a wireless earphone, and a charging device for the wireless earphone. Detailed introduction is given below with reference to the attached figures.

An embodiment of the present application provides a charging box. First, please refer to the structural diagram of the charging box shown in Figure 1-A. It is a charging box for dual wireless earphones and has a double thimble structure design.

Secondly, please refer to Figure 1-B. Figure 1-B is a schematic circuit structure diagram of the structural design of the charging box shown in Figure 1-A in the embodiment of the present application.

In the embodiment of the present application, as shown in Figure 1-B, the circuit structure of the charging box 100 includes a charging port 101, a chip system 102, a first switch 103, namely Switch1; a second switch 104, namely Switch2; and a first electrode 105 , the second electrode 106 is the Pogo pin in the figure. Among them, the chip system 102 may also include a universal asynchronous receiver and transmitter UART1021 and a micro control unit MCU1022.

Wherein, the MCU1022 is connected to the UART1021, the signal receiving port of the UART1021 is connected to the first selection end of the first switch, the signal sending port of the UART1021 is connected to the second selection end of the first switch, and the The common terminal of the first switch is connected to the first selection terminal of the second switch, the charging port is connected to the second selection terminal of the second switch, and the common terminal of the second switch is connected to the first electrode. The second electrode is grounded, the first signal port of the MCU 1022 is connected to the control port of the first switch, the second signal port of the MCU 1022 is connected to the control port of the second switch, and the signal control port is shown in Figure 1 -I/O pins in B.

The MCU 10122 is used to send a transceiver switching signal to the first switch to control the first switch to switch between a data receiving function and a data sending function, and to send a mode switching signal to the second switch to control all The second switch switches between the data communication mode and the charging mode.

The MCU 1022 is a microcontroller unit (MCU), also known as a single-chip microcomputer, commonly known as a single-chip microcomputer. MCU1022 appropriately reduces the frequency and specifications of the Central Processing Unit (CPU), and integrates peripheral interfaces such as memory, counter (Timer), USB, A/D conversion, UART, PLC, DMA, and even LCD The drive circuits are integrated on a single chip to form a chip-level computer, which can perform different combinations of controls for different applications. Used in many electronic products.

The Universal Asynchronous Receiver and Transmitter UART1011 is a data communication protocol standard. In a possible embodiment, it has two data communication lines and one UART receiving data line (UART Receiver, RXD), that is, Figure 1-B RXD shown in Figure 1-B; a UART transmit data line (UART Transmitter, TXD), that is, RXD shown in Figure 1-B. The two lines are combined to realize the communication function of the charging box. The UART that comes with the chip system has implemented the UART underlying protocol on the hardware and does not require software implementation.

It can be seen that the embodiment of the present application can realize the communication function of the charging box through the connection of MCU1022 and UART1011; and through the use of two single-pole double-throw switches, the MCU1022 can realize the data sending and receiving function of the charging box through the first switch 103. Switching; the charging box mode can be switched through the second switch 104. In addition, the common terminal of the second switch 104 is connected to the first electrode 105 through a single bus VBUS, and data exchange with other devices is realized through the first electrode 105, thereby realizing the multiplexing of the communication function and the charging function. That is to say, the charging box realizes switching between data communication mode and charging mode, as well as switching between data receiving function and data sending function through a single bus VBUS. Moreover, single-line communication is realized based on the UART of the hardware itself, which makes software development less difficult than I/O simulation. The structure is simple and beautiful, and the operation is convenient.

In a possible example, the charging port is directly connected to the MCU 1022 , and the MCU 1022 is directly connected to the second selection terminal of the second switch.

It can be understood that if one end of the charging port of the charging box is connected to the mains power, and the other end is connected to the MCU 1022, the MCU 1022 processes the mains power, and the processing may include converting the mains power into rated voltage and rated power. Or rated current, it can also include filtering, storage of charges, etc. The MCU 1022 is directly connected to the second selection terminal of the second switch 106, and the common terminal of the second switch 106 is connected to the first electrode 105 to provide a charging circuit that can charge the wireless earphones.

It can be seen that in this example, the charging port and the second switch 106 are directly connected through the MCU 1022, which has a simple structure and saves production costs.

In a possible example, the chip system 102 also includes a charging processing module 1023. The charging processing module 1023 includes one or more of the following: a voltage conversion circuit module, a power conversion circuit module, a rectification circuit module, and a filter circuit module. , when the charging processing module includes multiple ones, the connection state is in series; the charging port is directly connected to the MCU 1022, the MCU 1022 is connected to the charging processing module 1023, and the charging processing module 1023 is connected to the second switch 104 second option.

It can be understood that if one end of the charging port of the charging box is connected to the mains power, and the other end is connected to the MCU 1022, the MCU 1022 is connected to the charging processing module 1023, and the charging processing module 1023 processes the mains power. , the processing may include converting the mains power into rated voltage, rated power or rated current, and may also include filtering processing, storage of charges, etc. The charging processing module 1023 is directly connected to the second selection terminal of the second switch 106, and the common terminal of the second switch 106 is connected to the first electrode 105 to provide a charging circuit that can charge the wireless earphones.

It can be seen that in this example, the chip system 102 also includes a charging processing module 1023. The charging processing module 1023 processes the mains power, which can improve the safety of the charging box circuit and the processing effect of the mains power. Moreover, the MCU 1022 is connected to the charging processing module 1023 to facilitate management of the charging processing module 1023.

In a possible example, the chip system 102 also includes a charging processing module 1023. The charging processing module 1023 includes one or more of the following: a voltage conversion circuit module, a power conversion circuit module, a rectification circuit module, and a filter circuit module. , the connection state when there are multiple charging processing modules is series connection; the charging port is directly connected to the charging processing module 1023, and the charging processing module 1023 is connected to the second selection end of the second switch 104.

It can be understood that if one end of the charging port of the charging box is connected to the mains power, and the other end is connected to the charging processing module 1023, the charging processing module 1023 processes the mains power, and the processing may include The conversion of mains power into rated voltage, rated power or rated current can also include filtering, storage of charges, etc. The charging processing module 1023 is directly connected to the second selection terminal of the second switch 106, and the common terminal of the second switch 106 is connected to the first electrode 105 to provide a charging circuit that can charge the wireless earphones.

It can be seen that in this example, the chip system 102 also includes a charging processing module 1023. The charging processing module 1023 processes the mains power, which can improve the safety of the charging box circuit and the processing effect of the mains power. Moreover, the charging port is directly connected to the charging processing module 1023, and the circuit structure is simpler.

In a possible example, the physical form of the first electrode and the second electrode is an ejector pin form.

It can be understood that the metal contacts in the charging box 100, that is, the first electrode 105 of the charging box and the second electrode 106 of the charging box, are in the form of a Pogo Pin. The most common one on the market is a double thimble, with the two thimbles being the positive and negative poles respectively. This design can meet the rigid charging needs of TWS earphones and is used to transfer the power from the battery compartment of the charging box to the earphones.

It can be seen that in this example, the double thimble design is simple and beautiful, and can better meet the needs of most users.

In the embodiment of the present application, a wireless earphone is also provided. Please refer to the structural diagram of the wireless headset shown in Figure 2-A, which shows the structural design of the double thimble that matches the above charging box.

Wireless earphones have the middle wire replaced by radio waves. They are connected from the audio outlet of the terminal to the transmitter, and then the transmitter sends the radio waves to the receiver's earphones. The receiver is equivalent to a radio. There are three known types of wireless headsets: one is Bluetooth headset, the other is infrared headset, and the third is 2.4G.

The wireless earphones involved in the embodiments of the present application may be True Wireless Stereo (TWS) earphones. Compared with traditional wired headphones, TWS headphones use Bluetooth connection and transmission, which are small in size, good in sound quality, and rich in functions. The left and right earphones of the TWS earphones are independent of each other and do not need to be connected with cables to achieve wireless separation of the left and right channels.

Secondly, please refer to Figure 2-B. Figure 2-B is a schematic circuit structure diagram of the wireless earphone shown in Figure 2-A in the embodiment of the present application.

In the embodiment of the present application, as shown in Figure 2-B, the circuit structure of the wireless headset 200 includes a charging port 201, a chip system 202, a first switch 203, namely Switch1; and a second switch 204, namely Switch2. The first electrode 205, the second electrode 206, namely Pogo pin; synchronous switching circuit 207. Among them, the chip system 202 may also include a universal asynchronous receiver and transmitter UART2021 and a micro control unit MCU2022.

The MCU 2022 is connected to the UART 2021, the signal receiving port of the UART 2021 is connected to the first selection terminal of the second switch, the signal sending port of the UART 2021 is connected to the second selection terminal of the second switch, and the second The common end of the switch is connected to the first selection end of the first switch, the second selection end of the first switch is connected to the charging port, the common end of the first switch is connected to the first electrical level, and the second selection end of the first switch is connected to the charging port. The two electrodes are grounded, and the signal control port of the MCU2022 is connected to the signal receiving port of the second switch;

One end of the synchronous switching circuit is connected to the first electrical level, and the other end of the synchronous switching circuit is connected to the signal receiving port of the first switch;

The MCU 2022 is used to control the second switch to switch the data receiving function and the data sending function of the wireless headset.

Wherein, the signal control port of the MCU 2022 is connected to the signal receiving port of the second switch. The MCU 2022 is used to control the second switch to switch the data receiving function and the data sending function of the wireless headset. It can be understood that the signal control port of the MCU 2022 is a certain pin I/O of the MCU 2022 . I means input and O means output. The I/O pins are the input and output pins of MCU2022. It is mainly a port for data exchange with external devices. It has input and output capabilities.

The Universal Asynchronous Receiver and Transmitter UART2011 is a data communication protocol standard. In a possible embodiment, it has two data communication lines and one UART receiving data line (UART Receiver, RXD), that is, Figure 2-B RXD shown in Figure 2-B; a UART transmit data line (UART Transmitter, TXD), that is, RXD shown in Figure 2-B. The two lines are combined to realize the communication function of the charging box. The UART that comes with the chip system has implemented the UART underlying protocol on the hardware and does not require software implementation.

It can be seen that the wireless earphone 200 can realize mode switching through the synchronization circuit 207 and the second switch 204; through the MCU 2022 and the first switch, it can realize the transceiver switching of the wireless earphone; in short, the wireless earphone can be realized through a single bus VBUS Switching between data communication mode and charging mode, as well as switching between data receiving function and data sending function. The structure is simple and beautiful, and the operation is convenient.

In a possible example, the synchronous switching circuit 207 is used to control the first switch to switch between the communication mode and the charging mode.

Specifically, the synchronous switching circuit 207 is a circuit that can receive a mode control signal. When the synchronous circuit 207 receives the mode control signal, it controls the second switch 204 of the wireless headset to switch between the data communication mode and the charging mode. . The mode control signal may be sent by the wireless earphone 200 or by the first electrode 205 of the wireless earphone 200 .

It can be seen that through the synchronous switching circuit 207, the mode switching of the wireless earphones can be realized, and the mode switching of the wireless earphones can be synchronized with the charging box according to different sources of the mode control signal.

In a possible example, the physical form of the first electrode and the second electrode is an ejector pin form.

Specifically, the metal contacts in the wireless earphone 200, that is, the first electrode 205 of the wireless earphone 200 and the second electrode 206 of the wireless earphone 200, are in the form of a Pogo Pin. The most common one on the market is a double thimble, with the two thimbles being the positive and negative poles respectively. This design matches the structural design of the charging box 100 in the embodiment of the present application, can meet the rigid charging requirements of the wireless earphones, and is used to receive power transfer from the battery compartment of the charging box.

It can be seen that in this example, the double thimble design is simple and beautiful, and can better meet the needs of most users.

In a possible example, the wireless earphone includes a first earphone and a second earphone, and the first earphone and the second earphone have the same or similar internal structures.

Specifically, it can be understood that the first earphone and the second earphone included in the wireless earphones described in the embodiments of the present application can be left wireless earphones and right wireless earphones, wherein the outer structure of the first earphone and the second earphone can be as shown in Figure 2- As shown in A, they may be the same or similar, but may also have obvious differences. The internal circuit structure can refer to the circuit structure design and design principles shown in Figure 2-B, which is basically consistent or symmetrical. It can be seen that in the embodiment of the present application, the wireless earphones are configured with dual earphones, and the user can use two wireless earphones at the same time or use one of the wireless earphones alone. More convenient for users to use.

This embodiment of the present application also provides a wireless earphone charging system 300 as shown in Figure 3-A, including the charging box 301 as described above, and the wireless earphones including the right earphone 302 and the left earphone 303 as mentioned above. Both the left earphone and the right earphone are wireless earphones. The three are connected through a single bus VBUS.

The communication process and charging process of the wireless headset charging system 300 will be described in detail below in conjunction with the schematic circuit structure diagram of the wireless headset charging system 300 shown in Figure 3-B and the information interaction schematic diagram of the wireless headset charging system 300 shown in Figure 3-C. elaboration.

First, please refer to the circuit structure diagram of the wireless headset charging system shown in Figure 3-B. Since the internal circuit structure of the left wireless earphone and the right wireless earphone are the same, Figure 3-B shows the circuit connection relationship between the charging box and any one of the earphones. For the specific connection relationship, please refer to the circuit structure of the above charging box and the circuit of the above wireless earphone. structure. What is different from the above-mentioned charging box and the above-mentioned wireless earphones is that in the embodiment of the present application, the four switches are consecutively numbered.

Next, refer to the information interaction diagram of the wireless headset charging system shown in Figure 3-C.

In a possible embodiment, since the internal circuit structures of the left wireless earphone and the right wireless earphone are the same, the following takes the information interaction between the charging box and any one of the wireless earphones as an example, as shown in Figure 3-C, which may include But it is not limited to the following steps:

301. The charging box sends a mode switching signal.

Specifically, it can be understood that the initial state of the charging box and the wireless earphones is the default charging state, that is, the two wireless earphones are put into the charging box. Taking any one of the wireless earphones as an example, it will pass The circuit shown in Figure 3-B charges the wireless earphones. In one embodiment, the charging port of the charging box is directly connected to the MCU, and the MCU is directly connected to the second selection terminal of the second switch. The common terminal of the second switch of the charging box is connected to the first electrode of the charging box, the first electrode of the charging box is connected to the first electrode of the wireless earphone, and the first electrode of the wireless earphone is connected to the common terminal of the third switch, so The common end of the third switch is connected to the charging port of the wireless earphone to realize charging of the wireless earphone.

To charge another wireless headset, you can also refer to the above implementation process.

Specifically, it can be understood that the MCU sends a mode switching signal to the second switch through the second signal port, and controls the second switch to switch the charging mode to the data communication mode. At this time, the common terminal of the second switch is connected to the common terminal of the first switch through the first selection terminal. The common end of the second switch is connected to the first electrode of the charging box, and the first electrode of the charging box is connected to the first electrode of the wireless earphone. One end of the synchronous switching circuit of the wireless earphone is connected to the first electrical level, and the other end of the synchronous switching circuit is connected to the signal receiving port of the third switch.

Therefore, the synchronous switching circuit of the wireless earphone controls the third switch to switch the mode of the wireless earphone from the charging mode to the communication mode.

302. Send a transceiver switching signal to the first switch, where the transceiver switching signal is used to control the first switch to switch between a data receiving function and a data sending function.

In a possible embodiment, the micro control unit MCU of the charging box is connected to the control port of the first switch through a first signal port for sending a transceiver switching signal to the first switch. The transceiver switching signal is The first switch is controlled to switch the data receiving function to the data sending function. That is, the common terminal of the first switch is connected to the signal sending port of the UART.

303. Call UART to send operation instructions.

In a possible embodiment, it can be understood that after the first switch switches the data receiving function to the data sending function, the MCU calls the UART connected to it to send the operation instruction.

The operation instructions include control instructions and/or acquisition instructions. The control instructions are used to control the two wireless earphones to perform pairing, reset, restore factory settings, and OTA upgrade instructions; the acquisition instructions are used to acquire the wireless earphones. The characteristic information includes the version number, battery power and other information of the wireless headset. The OTA upgrade instruction is an over-the-air technology upgrade instruction. Over the Air Technology (OTA) is a technology that remotely manages SIM card data and applications through the air interface of mobile communications (GSM or CDMA).

304. Obtain feedback information according to the operation instructions.

In a possible example, after the wireless earphone receives the operation instruction, if the operation instruction is the control instruction, the wireless earphone communicates with another wireless earphone according to the preset steps according to the control instruction. The headphones are paired. The pairing method can be through Bluetooth, or when two wireless headphones are connected to the same wireless high-fidelity WiFi communication network, they will automatically connect to each other. You can also follow preset steps to perform operations such as reset, restore factory settings, and OTA upgrade.

If the operation instruction is the acquisition instruction, the wireless earphone acquires characteristic information according to the acquisition instruction. The characteristic information includes the version number, battery power and other information of the wireless earphone. And the characteristic information and the completion status of the control instructions are processed to obtain feedback information.

305. Send a transceiver switching signal to the fourth switch, where the transceiver switching signal is used to control the fourth switch to switch the data receiving function to the data sending function.

In a possible embodiment, after the wireless headset obtains the feedback information, the MCU of the wireless headset sends a transceiver switching signal to the signal receiving port of the fourth switch through the signal control port, and the transceiver switching signal is used to control the The fourth switch switches the data receiving function of the wireless headset to the data sending function.

It can be understood that, in order to simplify the operation process, both the above-mentioned wireless earphones and the above-mentioned charging box are in the data receiving function state by default. And whether it is the above-mentioned wireless earphones or the above-mentioned charging box, after completing the data transmission, the MCU of the charging box will send a transceiver switching signal to the first switch, and the MCU of the wireless earphones will send a transceiver switching signal to the fourth switch, so that each of them is in the data state again. Receive function status.

306. Call UART to send feedback information.

It can be understood that after the wireless headset obtains the feedback information and has switched the data receiving function to the data sending function, it calls back the UART to send the feedback information. As described in step 304 above, the feedback information is characteristic information of the wireless headset and/or feedback on the completion of the control instruction, etc.

307. Process the feedback information.

It can be understood that after the charging box completes the operation command for the first time, the MCU of the charging box will send a transceiver switching signal to the first switch, and the common end of the first switch is connected to the signal receiving port through the first selection end of the first switch. The charging box is in the data receiving function state again. After receiving the feedback information, the charging box will process the feedback information. The processing includes storing important information, or performing the next operation based on the feedback information, such as sending new operating instructions, or sending mode switching signals and receiving switching signals, etc. .

As shown in Figure 3-A, the charging box and the left and right wireless earphones form a triangular communication structure, and a pair-to-two communication network can be constructed between them. Based on this communication structure and UART communication protocol, the following two network topologies can be flexibly built.

In a possible example, please refer to Figure 4-A. Figure 4-A is a schematic diagram of a communication network topology with one master and two slaves provided by an embodiment of the present application.

Specifically, the charging box is the Master, which is the role of the host; the wireless headset is the Slave, which is the role of the slave. One master and two slaves means that the above-mentioned charging box acts as the master in communication, and the dual wireless earphones act as slaves in communication. Data communication is initiated by the host. The communication interaction logic between the master and the slave can be shown in Figure 3-C above. The charging box acts as the host and switches to the communication state. The headset acts as the slave and switches to the communication state synchronously and is in the data receiving state, waiting for the host to issue instructions. Operation instructions include control instructions, acquisition instructions, etc. The host issues control instructions, and the slave responds with status; the host issues acquisition instructions, and the slave responds with query results. Since the slave and the slave cannot directly exchange data, the left and right wireless earphones cannot communicate directly under this communication structure. They must be relayed through the charging box. That is, the charging box obtains the feedback information from one earphone and then transmits it to the other. Headphones only.

In a possible example, please refer to Figure 4-B. Figure 4-B is a schematic diagram of a one-master and two-slave communication network topology provided by an embodiment of the present application. However, the charging box and the right wireless earphone can switch between master and slave. . In another embodiment, the charging box and the left wireless earphone may also be switchable between master and slave. The following takes the charging box and the right wireless earphone as an example of master-slave switching.

Specifically, there is one master and two slaves, and the charging box and the right wireless earphone can be switched between master and slave. That is, on the basis of one master and two slaves, the logic of master-slave switching between the charging box and the right wireless earphone is added, that is, when the left and right wireless earphones need When exchanging data, the charging box will authorize the host role to the right wireless earphone, allowing the right wireless earphone to communicate directly with the left wireless earphone. It can be understood that the data exchange between the wireless earphones can be carried out after Bluetooth wireless connection, or the data can be exchanged through the first electrode of the right wireless earphone and the first electrode of the left wireless earphone. After the data exchange between the left and right wireless earphones is completed, return the host character to the charging box. The charging box authorizes the host role to the right wireless earphone. It can control the connection relationship of the switch through control instructions and build a communication link between the left and right wireless earphones. This process can be called the baton protocol. When the left and right wireless earphones need to communicate directly, the charging box will hand over the baton of the host to the right wireless earphone, so that the right wireless earphone can perform the host relationship similar to the charging box and realize the connection with the left wireless earphone. The data communication function of the headset, such as obtaining the Bluetooth ID of the left wireless headset and pairing it with the other party. Or get the other party's version information, status information, or send instructions, etc. In a possible embodiment, the left wireless earphone can be any other two-pin design wireless earphone and has a communication function. The above communication process with the right earphone can be realized. For example, after the right wireless earphone is upgraded, you can send commands to control the left wireless earphone to upgrade, etc.

In a possible embodiment, after the charging box sends an operation instruction to the wireless earphone, the wireless earphone can also send a query instruction to the charging box to obtain the status information and battery level of the charging box. . In addition, the user of the wireless headset can obtain the status information of the charging box in a timely manner and process the charging box through voice broadcast or display on the terminal connected to the wireless headset. For example, charge in time, or check the status of the charging box, etc.

In the above embodiments, each embodiment is described with its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways. For example, the embodiments of the wireless earphone charging device described above are only illustrative. For example, some steps included in the communication process between the charging box and the wireless earphone are not sequential, but are expressed according to a certain logic and implemented. The implementation process of communication in the example, or related communication processes, such as the communication process between wireless earphones and charging boxes, and the communication process between wireless earphones and wireless earphones, can also be deduced with the help of the above examples.

What is disclosed above is only some of the embodiments of the present application. Of course, it cannot be used to limit the scope of rights of the present application. Those of ordinary skill in the art can understand all or part of the processes for implementing the above embodiments and make decisions according to the claims of the present application. Equivalent changes still fall within the scope of the invention.

Claims (6)

1. A wireless earphone charging system, characterized in that it includes a charging box and a wireless earphone; The charging box includes a first chip system, a first switch, a second switch, a first electrode and a second electrode, and a first charging port. The first chip system includes a first Universal Asynchronous Receiver and Transmitter UART and a first microcontroller. Control unit MCU, the first MCU is connected to the first UART, the first signal receiving port of the first UART is connected to the first selection end of the first switch, and the first signal sending port of the first UART is connected The second selection terminal of the first switch is connected, the common terminal of the first switch is connected to the first selection terminal of the second switch, the first charging port is connected to the second selection terminal of the second switch, The common terminal of the second switch is connected to the first electrode, the second electrode is grounded, the first signal port of the first MCU is connected to the control port of the first switch, and the second port of the first MCU is connected to the ground. The signal port is connected to the control port of the second switch; The headset includes a second chip system, a third switch, a fourth switch, a synchronous switching circuit, a third electrode and a fourth electrode, and a second charging port. The second chip system includes a second UART and a second MCU. The second MCU is connected to the second UART, the signal receiving port of the second UART is connected to the first selection end of the fourth switch, and the signal sending port of the second UART is connected to the second end of the fourth switch. Selection terminal, the common terminal of the fourth switch is connected to the first selection terminal of the third switch, the second selection terminal of the third switch is connected to the second charging port, and the common terminal of the third switch is connected to the first selection terminal of the third switch. The third electrode is connected, the fourth electrode is grounded, the signal control port of the second MCU is connected to the signal receiving port of the fourth switch; and, one end of the synchronous switching circuit is connected to the third electrode, and the synchronous switching circuit is connected to the third electrode. The other end of the switching circuit is connected to the signal receiving port of the third switch; Wherein, the first electrode is connected to the third electrode; the second switch and the third switch start in the charging mode, and the first switch and the fourth switch start in the data receiving function state. ; When the second switch and the third switch are in the charging mode, the first MCU is used to send a mode switching signal to the second switch to control the second switch to perform a first target switching process, The first target switching process refers to switching from the charging mode to the data communication mode; and, When the second switch and the third switch are in the data communication mode, the first MCU is used to send a mode switching signal to the second switch to control the second switch to perform a second target switching process. , the second target switching process refers to switching from the data communication mode to the charging mode, and the state change amount of the third electrode due to the first target switching process or the second target switching process That is, the mode control signal is transmitted to the synchronous switching circuit; and, The synchronous switching circuit is configured to control the third switch to switch from the charging mode to the data communication mode based on the mode control signal, or to control the third switch to switch from the data communication mode based on the mode control signal. The communication mode is switched to the charging mode. 2. The wireless earphone charging system according to claim 1, wherein the first charging port is directly connected to the first MCU, and the first MCU is directly connected to the second selection end of the second switch. 3. The wireless earphone charging system according to claim 1, wherein the first chip system further includes a charging processing module, and the charging processing module includes one or more of the following: a voltage conversion circuit module, a power conversion circuit module, a rectifier circuit module, and a filter circuit module. When the charging processing module includes multiple modules, the connection state is in series; The first charging port is directly connected to the first MCU, the first MCU is connected to the charging processing module, and the charging processing module is connected to the second selection end of the second switch. 4. The wireless earphone charging system of claim 1, wherein the first chip system further includes a charging processing module, and the charging processing module includes one or more of the following: a voltage conversion circuit module, a power conversion circuit module, a rectifier circuit module, and a filter circuit module. When the charging processing module includes multiple modules, the connection state is in series; The first charging port is directly connected to the charging processing module, and the charging processing module is connected to the second selection terminal of the second switch. 5. The wireless earphone charging system according to any one of claims 1 to 4, wherein the first electrode, the second electrode, the third electrode and the fourth electrode have all physical forms. It is in the form of thimble. 6. The wireless earphone charging system according to any one of claims 1 to 4, wherein the wireless earphone includes a first earphone or a second earphone, and the first earphone and the second earphone have the same internal structure. Or symmetry.