WO2022089006A1

WO2022089006A1 - Earphone assembly

Info

Publication number: WO2022089006A1
Application number: PCT/CN2021/116841
Authority: WO
Inventors: 陈剑华; 范茂斌; 刘猛
Original assignee: 华为技术有限公司
Priority date: 2020-10-29
Filing date: 2021-09-07
Publication date: 2022-05-05
Also published as: CN114430517A

Abstract

Provided by an embodiment of the present application is an earphone assembly, comprising at least one first electrode provided on each earphone, and at least one second electrode provided on an earphone case. When the earphones are within the earphone case, the first electrodes are disposed opposite to the second electrode, and a capacitance is formed between the first electrodes and the second electrode so as to achieve wireless communication, so as to avoid the problem in the prior art in which normal communication cannot occur when a metal terminal has abnormalities in a connected state.

Description

Headphone components

This application claims the priority of the Chinese patent application with the application number 202011181508.8 and the application name "Headphone Assembly" filed with the China Patent Office on October 29, 2020, and the application filed with the China Patent Office on December 10, 2020. The priority of the Chinese Patent Application No. 202011439514.9 and the application title is "Headphone Assembly", the entire contents of which are incorporated in this application by reference.

technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to an earphone assembly.

Background technique

With the continuous development of electronic technology and the improvement of users' requirements for portability, wireless earphones are favored by more and more users. Typically, wireless earphones are used in conjunction with an earphone case, which can accommodate and charge the wireless earphones. Among them, taking True Wireless Stero (TWS) earphones as an example, TWS earphones are usually composed of earphone boxes and left and right earphones. Because of the detachable structure, a communication mechanism needs to be established between the earphones and the earphone box. The communication mechanism It is used for information interaction such as power information, pairing information, test information, etc.

In the prior art, a corresponding electrical connector may be provided on the wireless earphone and in the earphone box, respectively, and the electrical connector is used to conduct and transmit current. When the wireless earphone is stored in the earphone box, and the electrical connector on the wireless earphone is in contact with the electrical connector on the earphone box, the wireless earphone can be charged and communicated through the transmission function of the electrical connector. For example, currently both the TWS earphone and the earphone box have metal terminals, and the two are electrically connected through the metal terminal. When the TWS earphone is placed in the earphone box, the metal terminal on the TWS earphone is in contact with the metal terminal in the earphone box. In this way, the charging function and communication function between the TWS earphone and the earphone box are realized.

However, in the above solution, when the metal terminal is abnormal in the connection state (such as short circuit, corrosion, etc.), normal communication cannot be performed.

SUMMARY OF THE INVENTION

The embodiment of the present application provides an earphone assembly, which can avoid the problem of inability to communicate normally when the metal terminal in the prior art is abnormally connected.

An embodiment of the present application provides an earphone assembly, which includes: an earphone and an earphone box; the earphone has at least one first electrode, and the earphone box has at least one second electrode; the earphone is placed on the When inside the earphone box, the first electrode and the second electrode are disposed opposite to each other, and a capacitance is formed between the first electrode and the second electrode to realize wireless communication.

In the earphone assembly provided by the embodiment of the present application, at least one first electrode is arranged on the earphone, and at least one second electrode is arranged on the earphone box. When the earphone is placed in the earphone box, the first electrode and the second electrode are arranged opposite to each other, A capacitor is formed between the first electrode and the second electrode. According to the principle of coupling capacitance communication, non-contact wireless communication can be realized between the earphone and the earphone box, thereby solving communication interaction schemes such as power information, pairing information, and test information to avoid occurrence of For example, when the metal terminal in the prior art is abnormal in the connection state, it is a problem that normal communication is not possible.

In a possible implementation manner, the earphone has two first electrodes, and the earphone box has two second electrodes; one of the two first electrodes connects the communication of the earphone The signal is transmitted to the earphone box through one of the two second electrodes; the other one of the two second electrodes transmits the communication signal of the earphone box through the two first electrodes the other of which is passed to the headset.

Two first electrodes are arranged on the earphone, and second electrodes corresponding to the two first electrodes are arranged on the earphone box, wherein one of the two first electrodes transmits the communication signal of the earphone through the two second electrodes. One of the two electrodes transmits to the earphone box, and the other one of the two second electrodes transmits the communication signal of the earphone box to the earphone through the other one of the two first electrodes. The two-way communication interaction between the headset and the headset box is carried out at the same time.

In a possible implementation manner, the projection area of the first electrode on the second electrode completely overlaps with the second electrode.

By completely overlapping the projection area of the first electrode on the second electrode and the second electrode, it can ensure that the first electrode and the second electrode are completely opposite to each other, thereby ensuring the facing area of the plates between the first electrode and the second electrode It can increase the capacitance value and ensure the transmission of wireless communication between the earphone and the earphone box.

In a possible implementation manner, the earphone includes an earphone body and a first main control chip disposed inside the earphone body; the first electrode is electrically connected to the first main control chip.

By electrically connecting the first electrode with the first main control chip disposed inside the headphone body, the communication information interaction between the first electrode and the first main control chip can be ensured, so as to ensure that the communication signal of the headphone is transmitted to the headphone through the first electrode. The earphone box, and ensuring that the communication signal of the earphone box is transmitted to the earphone through the first electrode.

In a possible implementation manner, the first main control chip is provided with a first port for electrical connection with the first electrode, and the first electrode is connected to the first main control chip through the first port. The control chip realizes electrical connection.

The first main control chip is provided with a first port for electrical connection with the first electrode, and the first electrode is electrically connected to the first main control chip through the first port, so that the first electrode and the first main control chip can be realized. electrical connection between.

In a possible implementation manner, the earphone box includes an earphone box body and a second main control chip disposed inside the earphone box body; the second electrode is electrically connected to the second main control chip.

By electrically connecting the second electrode with the second main control chip disposed inside the headphone box body, the communication information interaction between the second electrode and the second main control chip can be ensured, thereby ensuring that the communication signal of the headphone box passes through the second electrode It is transmitted to the earphone, and the communication signal of the earphone is ensured to be transmitted to the earphone box through the second electrode.

In a possible implementation manner, the second main control chip is provided with a second port for electrical connection with the second electrode, and the second electrode is connected to the second main control chip through the second port. The control chip realizes electrical connection.

The second main control chip is provided with a second port for electrical connection with the second electrode, and the second electrode is electrically connected to the second main control chip through the second port, so that the second electrode and the second main control chip can be realized. electrical connection between.

In a possible implementation manner, the first electrode is located on the inner wall of the earphone body.

In a possible implementation manner, an opening is provided on the outer wall of the earphone body, and the first electrode is located in the opening.

By providing an opening on the outer wall of the earphone body, and the first electrode is located in the opening on the outer wall of the earphone body, the space inside the earphone body can be saved, and the first electrode can be prevented from occupying or affecting other original components inside the earphone body. set up and use.

In a possible implementation manner, an insulating layer is provided at the opening of one end of the opening near the outer wall of the earphone body; or, an insulating layer is provided on the side of the first electrode facing the second electrode .

By arranging an insulating layer at the opening of one end of the opening close to the outer wall of the earphone body, or arranging an insulating layer on the side of the first electrode facing the second electrode, the exposed first electrode can be prevented from being corroded by sweat, etc. Avoid affecting the communication signal transfer function between the first electrode and the second electrode.

In a possible implementation manner, the second electrode is located on the inner wall of the earphone box body.

In a possible implementation manner, an insulating layer is provided on the side of the second electrode facing the first electrode.

By arranging an insulating layer on the side of the second electrode facing the first electrode, the exposed second electrode can be prevented from being affected by sweat corrosion and the like, thereby avoiding affecting the communication signal transmission function between the second electrode and the first electrode. For example, when the earphones are stained with sweat, if the earphones are placed in the earphone box at this time, the sweat stains on the earphones will easily be stained on the second electrode in the earphone box, affecting the communication signal between the second electrode and the first electrode. transfer function.

In a possible implementation manner, a groove is provided on the inner wall of the earphone box body, and the first electrode is located in the groove.

By providing a groove on the inner wall of the earphone box body, and the first electrode is located in the groove on the inner wall of the earphone box body, the space inside the earphone box body can be saved, and the second electrode can be prevented from occupying or affecting other components inside the earphone box body. The setting and use of the original components.

In a possible implementation manner, an insulating layer is provided at the opening position of the groove.

By providing an insulating layer at the opening position of the groove on the inner wall of the earphone box body, the exposed second electrode can be prevented from being affected by sweat corrosion, etc., so as to avoid affecting the communication signal transmission function between the second electrode and the first electrode . For example, when the earphones are stained with sweat, if the earphones are placed in the earphone box at this time, the sweat stains on the earphones will easily be stained on the second electrode in the earphone box, affecting the communication signal between the second electrode and the first electrode. transfer function.

In a possible implementation manner, the earphone is further provided with a first connection terminal, and the earphone box is further provided with a second connection terminal; when the earphone is placed in the earphone box, the first connection terminal is The connection terminal is in electrical contact with the second connection terminal, so that the earphone box supplies power to the earphone.

By arranging a first connection terminal on the earphone and a second connection terminal matched with the first connection terminal on the earphone box, when the earphone is placed in the earphone box, the first connection terminal is in electrical contact with the second connection terminal In this way, the earphone box can be used to charge the earphone through the current transmission function between the first connection terminal and the second connection terminal.

These and other aspects, implementations, and advantages of exemplary embodiments will become apparent from the embodiments described hereinafter, taken in conjunction with the accompanying drawings. However, it should be understood that the description and the accompanying drawings are only used for illustration and do not serve as a definition for the limitation of the embodiments of the present application. For details, please refer to the appended claims. Other aspects and advantages of the embodiments of the present application will be set forth in the following description, and in part will be apparent from the description, or learned by practice of the embodiments of the present application. Furthermore, the various aspects and advantages of the embodiments of the present application may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.

Description of drawings

FIG. 1 is a schematic structural diagram of an earphone assembly provided by an embodiment of the present application;

FIG. 2 is a schematic structural diagram of an earphone assembly provided by an embodiment of the present application;

3 is a schematic structural diagram of an earphone assembly provided by an embodiment of the present application;

4 is a schematic structural diagram of an earphone assembly provided by an embodiment of the present application;

FIG. 5 is a schematic structural diagram of an earphone assembly provided by an embodiment of the present application;

6 is a schematic structural diagram of an earphone assembly provided by an embodiment of the present application;

7 is a schematic structural diagram of an earphone assembly provided by an embodiment of the present application;

8 is a schematic structural diagram of an earphone in an earphone assembly provided by an embodiment of the application;

9 is a schematic structural diagram of an earphone in an earphone assembly provided by an embodiment of the present application;

FIG. 10 is a signal waveform diagram of the earphone assembly provided by an embodiment of the application in a working state;

FIG. 11 is a schematic diagram of the working principle of an earphone assembly provided by an embodiment of the application;

FIG. 12 is a simplified diagram of the working principle of an earphone assembly provided by an embodiment of the present application.

Description of reference numbers:

100 - earphone assembly; 10 - earphone; 11 - earphone body; 111 - opening; 112 - earpiece part; 113 - earphone handle; 101 - first electrode; 102 - first connection terminal; 103 - first main control chip; 104-microphone; 105-speaker; 20-earphone box; 21-earphone box body; 211-groove; 201-second electrode; 202-second main control chip; 30-insulation layer; 40-battery; 50- Charger; 60-expander; 701-gravity sensor; 702-proximity sensor; 703-capacitance sensor; 704-hall sensor; 705-coulomb counter; 80-crystal oscillator.

Detailed ways

The terms used in the embodiments of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application. The following will describe the embodiments of the embodiments of the present application in detail with reference to the accompanying drawings.

The wireless headset can be used in conjunction with electronic devices such as mobile phones, notebook computers, and watches to process audio services such as media and calls of electronic devices, or some other data services. For example, the audio service may include media services such as playing music for the user, recording, music in video files, background music in games, incoming call prompt tone, etc.; , voice assistant and other call business scenarios, play the peer's voice data for the user, or collect the user's voice data and send it to the peer.

In the prior art, wireless earphones are used in conjunction with earphone boxes for storing and charging wireless earphones, and a communication mechanism needs to be established between the wireless earphones and the charging box for information exchange such as power information, pairing information, and test information. . For this reason, corresponding electrical connectors are respectively provided on the wireless earphones and in the earphone box. When the wireless earphones are stored in the earphone box and the electrical connectors on the wireless earphones are in contact with the electrical connectors in the earphone box, the wireless earphones can be The transmission function of the electrical connector completes the charging and communication for the wireless headset. However, in general, the charging function and the communication function cannot be performed simultaneously through the electrical connector, and when the electrical connector is abnormal in the connection state (such as short circuit, corrosion, etc.), normal communication cannot be performed.

At present, some technologies solve the problem that the charging function and the communication function cannot be performed at the same time by adding electrical connectors. For example, an electrical connector for charging and an electrical connector for communication are respectively set on the wireless headset, and the charging box An electrical connector for charging and an electrical connector for communication corresponding to the wireless earphone are provided inside. However, in the above solution, if the electrical connector is abnormal in the connection state (such as short circuit, corrosion, etc.), Still unable to communicate properly. Moreover, as the volume of the earphone becomes smaller and smaller, the interference problems of electrostatic discharge (ESD) and surge on the earphone become more and more serious, and the exposed electrical connector of the earphone is more prone to ESD, surge The high-frequency and high-voltage interference signals generated by surges are introduced into the earphone, which may interfere with or damage the devices and circuits inside the earphone.

Based on this, an embodiment of the present application provides an earphone assembly. The earphone has at least one first electrode and the earphone box has at least one second electrode. When the earphone is placed in the earphone box, the first electrode and the second electrode are arranged opposite to each other. , and a capacitance is formed between the first electrode and the second electrode to realize wireless communication. Using the principle of coupling capacitance communication, the problem of abnormal communication caused by abnormal connection state of metal terminals in the prior art can be avoided.

The specific structure of the earphone assembly will be introduced below with reference to the accompanying drawings.

1 , an embodiment of the present application provides an earphone assembly 100. The earphone assembly 100 may include an earphone 10 and an earphone box 20. The earphone 10 has at least one first electrode 101, and the earphone box 20 has at least one first electrode 101. Two electrodes 201. When the earphone 10 is placed in the earphone box 20, the first electrode 101 and the second electrode 201 are disposed opposite to each other, and a capacitance is formed between the first electrode 101 and the second electrode 201 to realize wireless communication.

Specifically, when the earphone 10 is placed in the earphone box 20, a capacitance is formed between the first electrode 101 and the second electrode 201. According to the principle of coupling capacitance communication, non-contact wireless communication can be realized between the earphone 10 and the earphone box 20. , which can solve the communication interaction scheme such as power information, pairing information, test information, etc., and avoid problems such as failure of normal communication caused by abnormal connection state of metal terminals in the prior art.

Among them, it is easy to understand that, between the first electrode 101 and the second electrode 201 includes Bluetooth (bluetooth, BT), global navigation satellite system (global navigation satellite system, GNSS), wireless local area network (wireless local area networks, WLAN), Such as wireless fidelity (Wi-Fi) network, frequency modulation (frequency modulation, FM), near field communication technology (nearfield communication, NFC), infrared technology (infrared, IR) and other wireless communication data exchange. That is, the earphone 10 can pair and establish a wireless connection between the first electrode 101 and the second electrode 201 of the earphone box 20, so as to realize the data exchange of the above-mentioned wireless communication.

In this embodiment of the present application, the setting manners of the first electrode 101 and the second electrode 201 include but are not limited to the following two possible implementation manners:

A possible implementation is: as shown in FIG. 1 , each earphone 10 has a first electrode 101 , and each earphone box 20 has a second electrode 201 , and the first electrode 101 passes the communication signal of the earphone 10 through The second electrode 201 is transmitted to the earphone box 20 , and the second electrode 201 transmits the communication signal of the earphone box 20 to the earphone 10 through the first electrode 101 .

That is to say, only a pair of electrode combinations are formed on the earphone 10 and the earphone box 20, that is, a low-power wireless communication scheme in a half-duplex mode is formed. Half-duplex communication means that data can be transmitted in two directions, but a channel can only allow one-way transmission at the same time, so it is also called bidirectional alternate communication. To change the transmission direction, it needs to be switched by a switch. The half-duplex method requires that there are transmitting devices and receiving devices at both ends of the transceiver. Since this method frequently changes the channel direction, the efficiency is low, but the transmission line can be saved.

Another possible implementation is: as shown in FIG. 2 , the earphone 10 has two first electrodes 101 , the earphone box 20 has two second electrodes 201 , and one of the two first electrodes 101 will The communication signal of the earphone 10 is transmitted to the earphone box 20 through one of the two second electrodes 201 , and the other of the two second electrodes 201 transmits the communication signal of the earphone box 20 through the two first electrodes 101 . The other is passed to the headset 10 .

That is to say, the combination of electrodes on the earphone 10 and the earphone box 20 can be extended to two pairs, that is, a low-power wireless communication scheme in a full-duplex mode is formed by the combination of the two pairs of electrodes. Full duplex means that at any time of communication, there can be bidirectional signal transmission from A to B and B to A on the line at the same time. In full-duplex mode, a transmitter and a receiver are provided at each end of the communication system, so that control data can be transmitted in both directions at the same time. Full-duplex mode does not require switching of directions, so there is no time delay caused by the switching operation, which is very beneficial for interactive applications such as remote monitoring and control systems where time delays cannot be tolerated.

In the embodiment of the present application, two first electrodes 101 are provided on the earphone 10 , and second electrodes 201 corresponding to the two first electrodes 101 are provided on the earphone box 20 , wherein, among the two first electrodes 101 One of them transmits the communication signal of the earphone 10 to the earphone box 20 through one of the two second electrodes 201, and the other of the two second electrodes 201 transmits the communication signal of the earphone box 20 through the two second electrodes 201. The other one of the electrodes 101 is transmitted to the earphone 10, so that the two-way communication interaction between the earphone 10 and the earphone box 20 can be simultaneously performed at the same time.

In a possible implementation manner, the two first electrodes 101 on the earphone 10 may be distributed on the earphone 10 . The dispersed setting means that the distance between the two first electrodes 101 on the earphone 10 may be greater than or equal to a preset value. That is to say, not both of the two first electrodes 101 are arranged on the side of the earphone 10 , only one first electrode 101 is arranged on the side of the earphone 10 , and the other first electrode 101 is dispersed from the first electrode 101 . It is arranged at the bottom of the earphone 10 , or, the two first electrodes 101 may be dispersed and arranged on the side of the earphone 10 with a relatively large relative distance. In this way, there can be more sufficient space inside the earphone 10 to arrange more other components, and the mutual influence between two adjacent first electrodes 101 can also be reduced to a certain extent.

Of course, in some other embodiments, the electrode combination on the earphone 10 and the earphone box 20 can be expanded to more pairs, and the electrode combination of more pairs constitutes a full-duplex mode low-power wireless communication scheme, which can meet more aspects functional requirements.

Among them, in practical application, taking the earphone 10 as the transmitting end A and the earphone box 20 as the receiving end B as an example, when the earphone 10 initiates communication, the AC signal can pass through the coupling formed between the first electrode 101 and the second electrode 201 Capacitors enable wireless communication. Moreover, in the actual application scenario, taking the earphone 10 as the A terminal and the earphone box 20 as the B terminal as an example, referring to FIG. 10 , the dotted line in the figure is the waveform sent by the A terminal, and the solid line is the waveform received by the B terminal. Waveform diagram, when the A terminal initiates communication, the AC signal can pass through the coupling capacitor composed of two electrodes, so as to realize the application scenario of wireless communication. Therefore, in practical applications, it can be flexibly based on the communication frequency and voltage amplitude of the transmitter or receiver. The capacitance value between the first electrode 101 and the second electrode 201 is adjusted to obtain the best communication effect.

It is easy to understand that, according to the calculation formula of the capacitance value: C=εS/d and C=εrS/4πkd, where ε and εr are the dielectric constants of the medium between the two electrodes that form the capacitor, and S is the two electrodes that form the capacitor. The facing area between the two electrodes, d is the distance between the two electrodes that form the capacitor, and k is the electrostatic force constant. It can be seen that when the facing area S between the two electrodes is larger, the distance between the two electrodes is larger. The larger the capacitance value formed, the smaller the distance d between the two electrodes, the larger the capacitance value formed between the two electrodes. Therefore, in practical application scenarios, the capacitance value can be adjusted by adjusting the facing area S between the two electrodes and the distance d between the two electrodes. Even, the required dielectric constant ε and εr can be adjusted by changing the medium between the two electrodes, thereby adjusting the capacitance value.

In a possible implementation manner, the projection area of the first electrode 101 on the second electrode 201 completely overlaps with the second electrode 201 , for example, as shown in FIG. 1 , the first electrode 101 on the earphone 10 and the earphone The second electrode 201 on the box 20 is completely opposite. As shown in FIG. 3 , the projection area of the first electrode 101 on the second electrode 201 only partially overlaps with the second electrode 201 , that is, the first electrode 101 on the earphone 10 and the second electrode 201 on the earphone box 20 are only partially positive pair settings.

Compared with the headphone assembly 100 shown in FIG. 3 , the headphone assembly 100 shown in FIG. 1 completely overlaps the second electrode 201 through the projection area of the first electrode 101 on the second electrode 201 , which can ensure that the first electrode 101 and the second electrode 201 are completely overlapped. The second electrodes 201 are completely opposite to each other, so that the facing area S between the plates between the first electrodes 101 and the second electrodes 201 can be ensured to be the largest, so that the capacitance value of the capacitor can be increased, and the gap between the earphone 10 and the earphone box 20 can be ensured. The transmission of wireless communication improves the communication effect between the earphone 10 and the earphone box 20 .

Further, in this embodiment of the present application, the earphone 10 may include an earphone body 11 and a first main control chip (not shown in the figure) disposed inside the earphone body 11 , wherein the first electrode 101 and the first main control chip electrical connection. By electrically connecting the first electrode 101 with the first main control chip disposed inside the earphone body 11, the communication information interaction between the first electrode 101 and the first main control chip can be ensured, thereby ensuring that the communication signal of the earphone 10 passes through the first main control chip. An electrode 101 is transmitted to the earphone box 20 , and ensures that the communication signal of the earphone box 20 is transmitted to the earphone 10 through the first electrode 101 .

As an optional implementation manner, the first main control chip may be provided with a first port (not shown in the figure) for electrical connection with the first electrode 101, and the first electrode 101 is connected to the first main control chip through the first port. The control chip realizes electrical connection. A first port for electrical connection with the first electrode 101 is provided on the first main control chip, and the first electrode 101 is electrically connected to the first main control chip through the first port, so that the first electrode 101 and the first The electrical connection between the main control chips.

Alternatively, if the first main control chip in the earphone 10 itself has an extra first port for the first main control chip to be electrically connected to the first electrode 101, the embodiment of the present application may not provide a separate port to save energy cost.

Exemplarily, the first electrode 101 can be electrically connected to a general purpose input/output (General Purpose Input Output, GPIO) of the first main control chip of the earphone 10, and the earphone 10 can be used as a sending end or a receiving end. It should be noted that the first port includes but is not limited to GPIO, and can also be other buses, such as I2C (Inter-Integrated Circuit), I3C (Improved Inter Integrated Circuit), SoundWire, low-power inter-chip serial A line media bus (Serial Low-power Inter-chip Media Bus, SLIMbus), etc., is not limited in this embodiment of the present application, nor is it limited to the above examples. Among them, the I2C bus refers to the bus used to connect the microcontroller and its peripheral devices, the I3C bus is an improved version of the I2C bus, and the SLIMbus is an audio interface used to connect the baseband/application processor and audio chips. The protocol ensures that both control information and data information can be sent, so that the traditional data and control interfaces can be replaced.

In the embodiment of the present application, the headphone box 20 may include a headphone box body 21 and a second main control chip (not shown in the figure) disposed inside the headphone box body 21 , wherein the second electrode 201 and the second main control chip The electrical connection is used to realize the electrical connection between the second electrode 201 and the internal circuit of the earphone box body 21 . By electrically connecting the second electrode 201 with the second main control chip disposed inside the headphone box body 21 , the communication information interaction between the second electrode 201 and the second main control chip can be ensured, thereby ensuring the communication signal of the headphone box 20 It is transmitted to the earphone 10 through the second electrode 201 , and the communication signal of the earphone 10 is ensured to be transmitted to the earphone box 20 through the second electrode 201 .

As an optional implementation manner, the second main control chip may be provided with a second port (not shown in the figure) for electrical connection with the second electrode 201, and the second electrode 201 is connected to the second main control chip through the second port. The control chip realizes electrical connection. A second port for electrical connection with the second electrode 201 is provided on the second main control chip, and the second electrode 201 is electrically connected to the second main control chip through the second port, so that the second electrode 201 and the second The electrical connection between the main control chips.

Alternatively, if the second main control chip in the earphone box 20 itself has an extra second port for the second main control chip to be electrically connected to the second electrode 201, the embodiment of the present application may not provide a separate port, so as to cut costs.

Exemplarily, the second electrode 201 can be electrically connected to a general input/output port (General Purpose Input Output, GPIO) of the second main control chip of the earphone box 20, and the earphone box 20 can be used as a sending end or a receiving end. It should be noted that the second port includes but is not limited to GPIO, and can also be other buses, such as I2C (Inter-Integrated Circuit), I3C (Improved Inter Integrated Circuit), SoundWire, low-power inter-chip serial A line media bus (Serial Low-power Inter-chip Media Bus, SLIMbus), etc., is not limited in this embodiment of the present application, nor is it limited to the above examples.

In addition, in the embodiment of the present application, the specific arrangement position of the first electrode 101 on the earphone 10 includes but is not limited to the following possible implementation manners:

A possible implementation is: as shown in FIG. 1 , the first electrode 101 is located on the inner wall of the earphone 10 .

Another possible implementation is: as shown in FIG. 4 , an opening 111 may be provided on the outer wall of the earphone 10 , and the first electrode 101 is located in the opening 111 . By providing the opening 111 on the outer wall of the earphone 10 , the first electrode 101 is located in the opening 111 on the outer wall of the earphone 10 , which can save the space inside the earphone 10 and prevent the first electrode 101 from occupying or affecting other parts inside the earphone 10 . The setting and use of the original components.

Another possible implementation is: as shown in FIG. 5 , an opening 111 may be provided on the outer wall of the earphone 10 , the first electrode 101 is located in the opening 111 , and one end of the opening 111 close to the outer wall of the earphone 10 is open. The insulating layer 30 is provided at the position, or the insulating layer 30 is provided on the side of the first electrode 101 facing the second electrode 201 . By arranging the insulating layer 30 at the opening of the opening 111 close to one end of the outer wall of the earphone 10 , or arranging the insulating layer 30 on the side of the first electrode 101 facing the second electrode 201 , the exposed first electrode 101 can be prevented from being damaged by Sweat corrosion and other influences, so as to avoid affecting the communication signal transmission function between the first electrode 101 and the second electrode 201 .

Similarly, in the embodiment of the present application, the specific setting position of the second electrode 201 on the earphone box 20 includes but is not limited to the following possible implementations:

A possible implementation manner is: as shown in FIG. 1 , the second electrode 201 is located on the inner wall of the earphone box 20 .

Another possible implementation is: (not shown in the figure) the second electrode 201 is located on the inner wall of the earphone box 20 , and the insulating layer 30 may be provided on the side of the second electrode 201 facing the first electrode 101 . By disposing the insulating layer 30 on the side of the second electrode 201 facing the first electrode 101 , the exposed second electrode 201 can be prevented from being affected by sweat corrosion and the like, thereby avoiding affecting the communication between the second electrode 201 and the first electrode 101 Signal transfer function. For example, when the earphone 10 is stained with sweat, if the earphone 10 is placed in the earphone box 20 at this time, the sweat on the earphone 10 will easily be stained on the second electrode 201 in the earphone box 20, affecting the connection between the second electrode 201 and the second electrode 201. A communication signal transfer function between electrodes 101 .

Another possible implementation manner is: as shown in FIG. 4 , a groove 211 may be provided on the inner wall of the earphone box 20 , and the second electrode 201 is located in the groove 211 . By providing the groove 211 on the inner wall of the earphone box 20, the second electrode 201 is located in the groove 211 on the inner wall of the earphone box 20, which can save the space inside the earphone box 20 and prevent the second electrode 201 from occupying or affecting the earphone box The setting and use of other original components inside 20.

Another possible implementation is as follows: as shown in FIG. 5 , a groove 211 may be provided on the inner wall of the earphone box 20, the second electrode 201 is located in the groove 211, and an insulation is provided at the opening position of the groove 211. Layer 30. By disposing the insulating layer 30 at the opening of the groove 211 on the inner wall of the earphone box 20 , the exposed second electrode 201 can be prevented from being affected by sweat corrosion, etc., so as to avoid affecting the space between the second electrode 201 and the first electrode 101 . communication signal transmission function. For example, when the earphone 10 is stained with sweat, if the earphone 10 is placed in the earphone box 20 at this time, the sweat on the earphone 10 will easily be stained on the second electrode 201 in the earphone box 20, affecting the connection between the second electrode 201 and the second electrode 201. A communication signal transfer function between electrodes 101 .

In some embodiments, the insulating layer 30 may be an insulating varnish. The insulating paint can prevent the exposed first electrode 101 or the second electrode 201 from being corroded by sweat, etc., so as to avoid affecting the communication signal transmission function between the first electrode 101 and the second electrode 201 .

In addition, as shown in FIG. 8 or FIG. 9 , in the embodiment of the present application, the earphone body 11 may include an earpiece portion 112 and an earphone handle 112 , wherein, as an optional implementation, the first electrode 101 may be disposed on the earphone The handle 113 is on the side away from the earpiece portion 112. For example, in FIG. 8, the first electrode 101 is located on the inner wall of the earphone handle 113 on the side away from the earpiece portion 112. In FIG. 9, the side of the earphone handle 113 away from the earpiece portion 112 An opening 111 may be provided on the outer wall, and the first electrode 101 is located in the opening 111 , that is, the first electrode 101 is located on the side of the earphone handle 113 away from the earpiece portion 112 .

It can be understood that the above setting can realize the wireless communication interaction between the earphone 10 and the earphone box 20 , and the charging function between the earphone 10 and the earphone box 20 can be realized by setting an electrical connector, for example, setting on the earphone 10 For the first electrical connector, a second electrical connector corresponding to the first electrical connector is arranged on the earphone box 20. When the earphone 10 is accommodated in the earphone box 20, the first electrical connector on the earphone 10 is connected to the earphone box. When the second electrical connectors in the 20 are in contact, the earphone 10 can be charged through the transmission function of the electrical connectors.

Referring to FIG. 11 , the first main control chip 103 in the earphone 10 is electrically connected to the first electrode 101 , the second main control chip 202 in the earphone box 20 is electrically connected to the second electrode 201 , and the first electrode 101 is electrically connected to the second electrode 101 . A capacitance is formed between the electrodes 202 to realize communication interaction. The earphone 10 also has a battery 40 and a charger 50 connected to the battery 40, the earphone box has a battery 40 and a charger 50 connected to the battery 40, and a blaster 60 connected to the charger 50. The charger 50 in the earphone 10 When electrically connected to the blaster 60 in the earphone box 20 , the charging function of the earphone box 20 for the earphone 10 can be realized. In addition, it should be noted that, continuing to refer to FIG. 11 , the first main control chip 103 may also be connected with a microphone 104 , a speaker 105 (also known as a Speaker), a gravity sensor 701 (also known as a G sensor), and a proximity sensor 702 (also known as P sensor), capacitive sensor 703 (also known as CAP sensor), Hall sensor 704 (also known as HALL sensor), coulomb counter 705 (also known as Gauge) and crystal oscillator 80 (also known as crystal). The crystal oscillator 80 may also be connected to the second main control chip 202 . Wherein, in some embodiments, the crystal oscillator 80 connected to the first main control chip 103 may be 26 MHz, and the crystal oscillator 80 connected to the second main control chip 202 may be 8 MHz.

Taking the earphone 10 as the A terminal and the earphone box 20 as the B terminal as an example, in a possible implementation manner, as shown in FIG. 12 , the capacitor C formed between the A terminal and the B terminal is 100nF. A resistor can be set in the box 20. For example, in FIG. 12, the resistor R can be 10k, and the resistor can play a filtering role in the communication circuit to prevent signal interference.

As an optional embodiment, as shown in FIG. 6 , the earphone 10 is further provided with a first connection terminal 102 , the earphone box 20 is also provided with a second connection terminal (not shown in the figure), and the earphone 10 is further provided with a second connection terminal (not shown in the figure). When placed in the earphone box 20 , the first connection terminal 102 is in electrical contact with the second connection terminal, so that the earphone box 20 supplies power to the earphone 10 . The earphone 10 is provided with the first connection terminal 102, and the earphone box 20 is provided with a second connection terminal matched with the first connection terminal 102. When the earphone 10 is placed in the earphone box 20, the first connection terminal 102 It is in electrical contact with the second connection terminal, so that the earphone box 20 can charge the earphone 10 through the current transmission function between the first connection terminal 102 and the second connection terminal.

The first connection terminal 102 of the earphone 10 and the second connection terminal of the earphone box 20 are used for electrical connection, and can be made of various conductive materials, such as metals such as copper, and the specific materials are not limited in the embodiments of the present application. For example, in some embodiments, the first connection terminal 102 of the earphone 10 and the second connection terminal of the earphone box 20 may be made of alloys to improve oxidation resistance. For example, in some solutions, copper, nickel, and silver alloys may be fabricated; in other solutions, phosphorus and bronze alloys may be fabricated; in other solutions, different alloys may be used.

In other embodiments, the outer surfaces of the first connection terminal 102 of the earphone 10 and the second connection terminal of the earphone box 20 may also be plated with anti-corrosion metals (eg, gold, silver, etc.) to improve corrosion resistance.

Moreover, optionally, the first connection terminal 102 of the earphone 10 and the earphone 10 and the second connection terminal of the earphone box 20 and the earphone box 20 may be liquid-tight sealed, so as to have a high waterproof performance grade.

It should be noted that, in the embodiment of the present application, the first connection terminal 102 may be arranged at the bottom of the earphone 10 (see FIG. 6 ), and the second connection terminal is arranged at the bottom of the earphone box 20 , that is, the earphone box 20 is connected to the bottom of the earphone box 20 . at a position corresponding to the first connection terminal 102 . Alternatively, as shown in FIG. 7 , the first connection terminal 102 may also be arranged on the side of the earphone 10 , and the second connection terminal may be arranged on the side of the earphone box 20 , that is, the earphone box 20 corresponds to the first connection terminal 102 . location. The embodiments of the present application do not limit the specific arrangement positions of the first connection terminal 102 and the second connection terminal, nor are they limited to the above examples, as long as the purpose of electrical contact can be achieved and the charging function can be achieved.

Wherein, when only one first connection terminal 102 is arranged at the bottom of the earphone 10, the space at the bottom of the whole earphone 10 can be used to arrange the first connection terminal 102, so the area of the first connection terminal 102 is large, and the charging In this case, the contact area with the second connection terminal in the earphone box 20 is larger, the contact is better, the contact resistance is smaller, and the charging efficiency is also higher.

As an optional embodiment, the second connection terminal in the battery box 20 may be a pogo pin, and the first connection terminal 102 on the earphone 10 may be a conductive block or a conductive sheet. When the first connection terminal 102 is a conductive sticker When a chip is used, the second connection terminal can also be a conductive chip, a contact pad, or the like. In this way, the first connection terminal 102 on the earphone 10 and the second connection terminal in the battery box 20 can be electrically connected through surface contact, in-line connection, screw connection, bayonet connection and other methods.

To sum up, in the embodiment of the present application, an electrode is placed on the earphone 10 and the charging box 20 respectively, a capacitor is formed by the two electrodes and the dielectric material between them, and the principle of capacitive communication is used to realize the connection between the earphone 10 and the charging box 20. Non-contact wireless communication, and then solve interactive solutions such as power information, pairing information, and test information. Compared with the prior art, the earphone 10 and the earphone box 20 in the embodiment of the present application can realize simultaneous communication and charging without presenting more metal connection terminals to the outside.

Moreover, through the coordination of different electrodes, a low-power wireless communication solution in half-duplex or full-duplex mode can be formed. When the main control chip itself has an interface, the interface for the electrical connection of the electrodes may not be separately provided, so the cost is low, and it is a low-cost wireless communication solution.

In addition, in order to further solve the problem caused by the exposure of the first connection terminal 102 of the earphone 10 and reduce the influence of high-frequency and high-voltage interference signals such as ESD and surge, the embodiment of the present application may also add an anti-interference device inside the earphone 10 In this way, the electrical signal input from the first connection terminal 102 of the earphone 10 can be connected to the internal circuit system of the earphone 10 after passing through the anti-interference device. The anti-interference device can be used to suppress high-frequency and high-voltage interference signals such as ESD and surge introduced from the outside by the first connection terminal 102 , reduce the interference and influence of these interference signals on the circuit system of the earphone 10 , and improve the system of the earphone 10 . stability. Among them, the anti-interference device suppressing high-frequency and high-voltage interference signals may include attenuating, absorbing or filtering high-frequency and high-voltage interference signals, so that the high-frequency and high-voltage interference signals lose their high-frequency and high-voltage characteristics, thereby reducing the impact on the earphone 10 circuit. device impact.

It can be understood that the structures illustrated in the embodiments of the present application do not constitute a specific limitation on the earphone assembly 100 . In other embodiments of the present application, the earphone assembly 100 may include more or less components than shown, or combine some components, or separate some components, or arrange different components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

Exemplarily, the earphone case 20 may have one or more magnets inside to attract the earphone 10 into the cavity in the earphone case 20 and prevent the earphone 10 from being detached or dropped from the earphone case 20 . In some embodiments, the earphone box 20 may further include a box power module, and the box power module can supply power to the electrical components in the earphone box 20. For example, the second connection terminal in the earphone box 20 can be electrically connected to the box power module. , used to conduct and transmit current.

In other embodiments, the earphone box 20 may further be provided with at least one touch control, and the touch control may be used to trigger functions such as pairing and resetting the earphone or charging the earphone. The earphone box 20 may also be provided with one or more power indicator lights to prompt the user the power level of the battery in the earphone box 20 and the battery level of each earphone 10 in the earphone box 20 .

And, in other embodiments, the earphone box 20 may further include components such as a processor and a memory. The memory can be used to store application program codes, and is controlled and executed by the processor of the earphone box 20, so as to realize various functions of the earphone box 20. E.g. The processor of the earphone box 20 charges the earphone 10 after detecting that the earphone 10 is put into the earphone box 20 and the cover of the earphone box 20 is closed by executing the application code stored in the memory.

For another example, the earphone box 20 may also be provided with a charging interface, which is used for the earphone box 20 to charge its own battery. The earphone box 20 may further include a wireless charging coil for wirelessly charging the battery of the earphone box 20 itself. It can be understood that the earphone box may also include other components, which will not be described one by one here.

In addition, the outer surface of the earphone 10 may further include: a touch sensor, a fingerprint sensor, an ambient light sensor, etc., the touch sensor may be used to detect the user's touch operation, the fingerprint sensor may be used to detect the user's fingerprint, identify the user's identity, etc., the The ambient light sensor can adaptively adjust some parameters (such as volume) according to the perceived brightness of the ambient light.

And in some other embodiments, the outer surface of the headset 10 may also include buttons, indicator lights (which can indicate the status of power, incoming/outgoing calls, pairing mode, etc.), a display screen (which can prompt the user for relevant information), dustproof Net (can be used with the handset) and other components. The key may be a physical key or a touch key (used in conjunction with a touch sensor), etc., and is used to trigger operations such as power-on, power-off, pause, play, recording, start charging, and stop charging.

In the description of the embodiments of the present application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a The indirect connection through an intermediate medium may be the internal communication of the two elements or the interaction relationship between the two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the embodiments of the present application according to specific situations.

The devices or elements referred to in the embodiments of the present application or implied must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation on the embodiments of the present application. In the description of the embodiments of the present application, "plurality" means two or more, unless otherwise precisely and specifically specified.

The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects, while It is not necessary to describe a particular order or sequence. It is to be understood that data so used may be interchanged under appropriate circumstances such that embodiments of the embodiments of the application described herein can be implemented, for example, in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those expressly listed Rather, those steps or units may include other steps or units not expressly listed or inherent to these processes, methods, products or devices.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, but not to limit them; It should be understood that: it is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the embodiments of the present application The scope of the technical solutions of each embodiment.

Claims

An earphone assembly, comprising:

Headphones and headphone boxes;

The earphone has at least one first electrode, and the earphone box has at least one second electrode;

When the earphone is placed in the earphone box, the first electrode and the second electrode are disposed opposite to each other, and a capacitance is formed between the first electrode and the second electrode to realize wireless communication.
The earphone assembly according to claim 1, wherein the earphone has two first electrodes, and the earphone box has two second electrodes;

One of the two first electrodes transmits the communication signal of the earphone to the earphone box through one of the two second electrodes;

The other of the two second electrodes transmits the communication signal of the earphone box to the earphone through the other of the two first electrodes.
The earphone assembly according to claim 1 or 2, wherein the projection area of the first electrode on the second electrode completely overlaps with the second electrode.
The earphone assembly according to any one of claims 1-3, wherein the earphone comprises an earphone body and a first main control chip disposed inside the earphone body;

The first electrode is electrically connected to the first main control chip.
The earphone assembly according to claim 4, wherein the first main control chip is provided with a first port for electrical connection with the first electrode, and the first electrode is connected to the first electrode through the first port. The first main control chip is electrically connected.
The earphone assembly according to any one of claims 1-5, wherein the earphone box comprises an earphone box body and a second main control chip disposed inside the earphone box body;

The second electrode is electrically connected to the second main control chip.
The earphone assembly according to claim 6, wherein the second main control chip is provided with a second port for electrical connection with the second electrode, and the second electrode is connected to the second electrode through the second port. The second main control chip is electrically connected.
The earphone assembly according to any one of claims 4-7, wherein the first electrode is located on the inner wall of the earphone body.
The earphone assembly according to any one of claims 4-7, wherein an opening is provided on the outer wall of the earphone body, and the first electrode is located in the opening.
The earphone assembly according to claim 9, wherein an insulating layer is provided at an opening position of the opening near one end of the outer wall of the earphone body;

Alternatively, an insulating layer is provided on the surface of the first electrode facing the second electrode.
The earphone assembly according to any one of claims 4-10, wherein the second electrode is located on the inner wall of the earphone box body.
The earphone assembly according to claim 11, wherein an insulating layer is provided on the side of the second electrode facing the first electrode.
The earphone assembly according to any one of claims 4-10, wherein a groove is provided on the inner wall of the earphone box body, and the first electrode is located in the groove.
The earphone assembly according to claim 13, wherein an insulating layer is provided at the opening position of the groove.
The earphone assembly according to any one of claims 1-14, wherein the earphone is further provided with a first connection terminal, and the earphone box is further provided with a second connection terminal;

When the earphone is placed in the earphone box, the first connection terminal is in electrical contact with the second connection terminal, so that the earphone box supplies power to the earphone.