A wireless earphone, a charging box and a communication method of the wireless earphone and the charging box

Abstract

The embodiment of the application provides a wireless earphone, a charging box, and a communication method of the wireless earphone and the charging box. The positive electrode connector and the negative electrode connector of the wireless earphone are connected with the positive electrode and the negative electrode of the charging box respectively. The wireless earphone comprises: an earphone control module, configured to generate a first request when the wireless earphone receives a charging signal transmitted by the charging box through the positive electrode connector; a pull current circuit, configured to apply a target current to the negative electrode connector according to the first request, and the target current is used for the charging box to control the positive electrode connector to adjust from a state of transmitting the charging signal to a state of transmitting a communication signal; a first switching module, configured to monitor whether the positive electrode connector is adjusted to the state of transmitting the communication signal; and the earphone control module is further configured to communicate with the charging box in the state that the positive electrode connector is adjusted to the state of transmitting the communication signal. According to the embodiment of the application, communication can be initiated to the charging box actively without frequently interrupting the charging state of the wireless earphone.

Description

Technical Field

[0001] This application relates to the field of terminal technology, and in particular to a wireless headset, a charging case, and a communication method between the wireless headset and the charging case. Background Technology

[0002] True Wireless Stereo (TWS) earbuds generally consist of two parts: the earbuds and the charging case. Once the earbuds are placed in the case, they can communicate with the case and charge. The contact between the earbuds and the case is primarily achieved through metal pins. These metal pins are made of a metallic material used to conduct electrical signals.

[0003] Currently, there are two pin-based solutions for TWS earbuds: two-pin and three-pin. In the three-pin solution, the three pins are designated as a ground (GND) pin, a charging pin, and a communication pin, with charging and communication each using two pins. This allows for separate charging and communication processes between the earbuds and the charging case, preventing interference. However, this solution exposes three metal pins on each earbud, which are prone to dirt and are aesthetically unappealing. Furthermore, the numerous metal pins increase cost and make integration difficult. Therefore, to avoid these issues, many TWS earbuds currently use a two-pin solution. In this solution, the two pins are designated as a ground pin and a charging / communication pin, respectively. Charging and communication are transmitted via the same pin. This solution uses a polling method when the case communicates with the earbuds; that is, the charging process is periodically interrupted during charging to establish a communication connection with the earbuds, and charging resumes after the connection is established. This frequent polling by the box will interrupt the charging process and affect charging efficiency; at the same time, since the earphones cannot actively communicate with the box during charging, the box cannot be aware of any abnormalities in the earphones in a timely manner.

[0004] Therefore, how to actively communicate with the charging case without frequently interrupting the earphone charging process is an urgent problem to be solved. Summary of the Invention

[0005] This application provides a wireless earphone, a charging case, and a communication method between the wireless earphone and the charging case, so as to actively communicate with the charging case without frequently interrupting the earphone's charging state.

[0006] In a first aspect, embodiments of this application provide a wireless earphone, wherein the positive connector and negative connector of the wireless earphone are respectively connected to the positive and negative terminals of a charging case; the wireless earphone includes:

[0007] The earphone control module is used to generate a first request when the wireless earphone receives a charging signal transmitted by the charging case through the positive connector, wherein the first request is used to request communication with the charging case;

[0008] A current-pull circuit is used to apply a target current to the negative connector according to the first request. The target current is used by the charging box to control the positive connector to switch from transmitting a charging signal to transmitting a communication signal.

[0009] The first switching module is used to monitor whether the positive connector is adjusted to the state of transmitting communication signals;

[0010] The earphone control module is also used to communicate with the charging case when the positive connector is adjusted to the state of transmitting communication signals.

[0011] Currently, wireless earbuds connect to the charging case via two connectors; for example, the positive and negative connectors of the earbuds are connected to the positive and negative terminals of the charging case, respectively. Therefore, charging signals and communication signals cannot be transmitted to the charging case simultaneously. In existing technology, the charging case needs to periodically interrupt the charging process of the wireless earbuds to establish a communication connection, and then continue charging after the communication is complete to ensure that the earbuds can maintain communication with the charging case periodically. However, this frequently interrupts the charging process, affecting charging efficiency; simultaneously, since the earbuds cannot actively initiate communication with the case during charging, the case cannot promptly detect any abnormalities in the earbuds. Therefore, this application provides an embodiment of a wireless earbud that can actively communicate with the charging case without frequently interrupting the charging process. Specifically, when the wireless earbuds receive the charging signal transmitted by the charging case through the positive connector, the earbuds can generate a first request through the earbud control module. At this point, after generating the first request, the wireless earphone applies a target current to the negative connector through a current-pull circuit, and then monitors whether the positive connector is adjusted to the state of transmitting communication signals. When the positive connector is adjusted to the state of transmitting communication signals, it can communicate with the charging case. That is, when the charging case charges the wireless earphone, the current-pull circuit on the wireless earphone side generates an instantaneous current to ground in the charging path. When the charging case detects this instantaneous current, it actively switches the charging state between the wireless earphone and the charging case to the communication state (i.e., the positive connector is adjusted from the state of transmitting charging signals to the state of transmitting communication signals) and then communicates with the wireless earphone. This allows the wireless earphone to autonomously decide whether to initiate communication with the charging case, avoiding the charging case frequently interrupting the charging state to inquire whether the wireless earphone should communicate, greatly improving charging and communication efficiency.

[0012] In one possible implementation, the positive connector and the negative connector can be a first metal PIN and a second metal PIN, respectively.

[0013] In this embodiment, the metal PIN can be a metallic material used to conduct charging signals or transmit communication signals. Therefore, the metal PIN ensures both charging and communication for the wireless earphones and charging case.

[0014] In one possible implementation, the first switching module is specifically configured to: monitor the voltage at the positive connector, wherein the voltage at the positive connector during the state of transmitting a charging signal is greater than the voltage during the state of transmitting a communication signal. The earphone control module is specifically configured to: communicate with the charging case after the voltage at the positive connector decreases.

[0015] By implementing the embodiments of this application, since the voltage of the positive connector in the state of transmitting a charging signal is greater than the voltage in the state of transmitting a communication signal, the wireless earphone can determine whether the charging case is in a charging state or a communication state by monitoring the magnitude of the voltage at the positive connector. After the charging case switches from the charging state to the communication state, the wireless earphone can communicate with the charging case, avoiding the charging case frequently interrupting the charging state to inquire whether the wireless earphone is communicating, thus greatly improving charging efficiency and communication efficiency.

[0016] In one possible implementation, the first request includes a first voltage, and the current sourcing circuit includes a first input terminal and a first output terminal; the headphone control module is further configured to: apply the first voltage to the current sourcing circuit through the first input terminal; the current sourcing circuit is specifically configured to: after the headphone control module applies the first voltage through the first input terminal, the current sourcing circuit is turned on and outputs the target current to the negative connector through the first output terminal.

[0017] Implementing the embodiments of this application, if the wireless earphone actively initiates communication with the charging case during the charging process, the wireless earphone can generate a first request, that is, apply a first voltage to the current-collecting circuit, so that the current-collecting circuit is turned on and outputs the target current to the negative connector through the first output terminal. Then the charging case adjusts the positive connector from the state of transmitting charging signals to the state of transmitting communication signals, ensuring smooth communication between the wireless earphone and the charging case.

[0018] In one possible implementation, the first request includes a first voltage, and the current-pull circuit includes a current-limiting resistor and a switching circuit connected in series, wherein the current-limiting resistor is used to determine the magnitude of the target current, and the switching circuit is used to control the conduction or disconnection of the current-pull circuit; the headphone control module is specifically used to: apply the first voltage to the switching circuit; and the current-pull circuit is specifically used to: after applying the first voltage to the switching circuit, control the current-pull circuit to conduct and output the target current to the negative connector.

[0019] In this embodiment, the current-pull circuit is implemented using a current-limiting resistor and a switching circuit connected in series. The current-limiting resistor controls the magnitude of the target current, preventing overload and device damage. The switching circuit controls the conduction or disconnection of the current-pull circuit; for example, the switching circuit can be a metal-oxide-semiconductor (MOSFET), a transistor, or other switching transistors. When the current-pull circuit is on, the target current can be output to the negative connector. Therefore, when the charging case detects a change in the current of the negative connector, it switches the positive connector from transmitting a charging signal to transmitting a communication signal, ensuring smooth communication between the wireless earphones and the charging case.

[0020] In one possible implementation, the wireless earphone further includes: a charging module, the charging module including a charging input terminal and a charging output terminal; the charging module is used to receive the charging signal transmitted by the positive connector through the charging input terminal, and to transmit the charging signal to a device coupled to the charging output terminal.

[0021] In this embodiment of the application, the wireless earphone can receive the electrical signal transmitted by the charging case through the charging module to ensure that the wireless earphone is in a charging state.

[0022] In one possible implementation, the current-pull circuit further includes a second input terminal, which is coupled to the charging input terminal or the charging output terminal.

[0023] In this embodiment, the current-pull circuit does not require a separate power supply to provide the target current. It can directly utilize the power supply on the charging path of the wireless earphones from the charging case to generate an instantaneous current superimposed on the charging current, which greatly reduces hardware costs and saves device integration space.

[0024] Secondly, embodiments of this application provide a charging case for wireless earphones, characterized in that the positive and negative terminals of the charging case are respectively connected to the positive and negative connectors of the wireless earphones; the charging case includes:

[0025] The charging case control module is used to monitor the magnitude of the current at the negative connector when transmitting a charging signal to the wireless earphone through the positive connector;

[0026] When the magnitude of the current at the negative connector changes, the second switching module is controlled to adjust the positive connector from the state of transmitting charging signals to the state of transmitting communication signals.

[0027] Receive communication signals sent by the wireless earphone.

[0028] Currently, wireless earbuds connect to the charging case via two connectors; for example, the positive and negative connectors of the earbuds connect to the positive and negative terminals of the charging case, respectively. Therefore, in existing technology, the charging case needs to periodically interrupt the charging process of the wireless earbuds to establish a communication connection. After communication is established, the charging case resumes charging to ensure that the earbuds can maintain communication with the charging case periodically. However, this frequent interruption of the charging process affects charging efficiency. Furthermore, since the earbuds cannot actively initiate communication with the case during charging, the charging case cannot promptly detect any abnormalities in the earbuds. To address this, this application provides a charging case for wireless earbuds that can monitor the status of the earbuds during charging. When the earbuds request communication, the case proactively adjusts the charging state to a communication state, enabling communication with the earbuds. This avoids frequent interruptions of the charging process, improving charging efficiency. For example, when the wireless earbuds apply a target current to the negative connector via the current-pull circuit, that is, when the magnitude of the current at the negative connector changes, the charging case responds to this change by controlling the second switching module to switch the positive connector from the state of transmitting charging signals to the state of transmitting communication signals. Then, it receives the communication signals sent by the wireless earbuds through the positive connector. This allows the wireless earbuds to autonomously decide whether to initiate communication with the charging case, avoiding the charging case frequently interrupting the charging process to query the wireless earbuds, thus greatly improving both charging and communication efficiency.

[0029] In one possible implementation, the charging case further includes: a detection resistor connected in series with the negative terminal, wherein the voltage across the detection resistor increases when the wireless earphone applies a target current to the negative terminal connector; the charging case control module is specifically used to: monitor the magnitude of the voltage across the detection resistor.

[0030] In this embodiment, according to Joule's law, U = IR, where U is voltage, I is current, and R is resistance. Therefore, the detection resistor can convert the current signal at the negative connector into a voltage signal at the detection resistor connected in series with the negative connector. That is, when determining whether the wireless earphone applies a target current to the negative connector, the voltage across the detection resistor connected in series with the negative connector can be monitored, which greatly reduces the difficulty of monitoring and improves the accuracy of monitoring.

[0031] In one possible implementation, the charging box further includes a monitoring circuit, which includes a third input terminal, a fourth input terminal, and a second output terminal. The third input terminal and the fourth input terminal are respectively connected to the two ends of the detection resistor, and the second output terminal is connected to the charging box control terminal. The charging box control module is specifically used to: receive a second voltage input by the monitoring circuit through the second output terminal after the magnitude of the current at the negative connector changes; and control the second switching module to adjust the positive connector from the state of transmitting charging signals to the state of transmitting communication signals based on the second voltage.

[0032] In this embodiment, the change in the voltage signal at the detection resistor connected in series with the negative connector can reflect the change in the current at the negative connector. After the monitoring circuit detects the change in the voltage signal, it outputs a second voltage based on the change and feeds this second voltage back to the charging case control module. This allows the second switching module to switch the positive connector from transmitting charging signals to transmitting communication signals. This enables the wireless earbuds to autonomously decide whether to initiate communication with the charging case, avoiding the charging case frequently interrupting the charging process to query the earbuds, thus significantly improving both charging and communication efficiency.

[0033] In one possible implementation, the charging box further includes a charging box charging module, which includes a charging box charging output terminal; the charging box charging module is used to transmit the charging signal through a device coupled to the charging box charging output terminal.

[0034] In this embodiment of the application, the charging case can charge the wireless earphones through the charging case charging module to ensure that the wireless earphones are in a charging state.

[0035] Thirdly, embodiments of this application provide a communication method between wireless earphones and a charging case, applied to wireless earphones, wherein the positive and negative connectors of the wireless earphones are respectively connected to the positive and negative terminals of the charging case; the method includes:

[0036] When the wireless earphone receives the charging signal transmitted by the charging case through the positive connector, the earphone control module generates a first request, which is used to request communication with the charging case.

[0037] According to the first request, a target current is applied to the negative connector through a current-pull circuit. The target current is used by the charging box to control the positive connector to switch from transmitting a charging signal to transmitting a communication signal.

[0038] The first switching module monitors whether the positive connector has been adjusted to the state of transmitting communication signals.

[0039] When the positive connector is adjusted to the state of transmitting communication signals, it communicates with the charging case through the earphone control module.

[0040] In one possible implementation, the positive connector and the negative connector can be a first metal PIN and a second metal PIN, respectively.

[0041] In one possible implementation, monitoring whether the positive connector is adjusted to the state of transmitting the communication signal via the first switching module includes: monitoring the voltage at the positive connector via the first switching module, wherein the voltage of the positive connector in the state of transmitting the charging signal is greater than the voltage in the state of transmitting the communication signal. The step of communicating with the charging case via the earphone control module when the positive connector is adjusted to the state of transmitting the communication signal includes: communicating with the charging case via the earphone control module after the voltage at the positive connector decreases.

[0042] In one possible implementation, the first request includes a first voltage, and the current sourcing circuit has a first input and a first output; applying a target current to the negative connector via the current sourcing circuit according to the first request includes: applying the first voltage to the current sourcing circuit via the first input according to the first request; and after applying the first voltage to the current sourcing circuit, the current sourcing circuit is turned on and applies the target current to the negative connector via the first output.

[0043] In one possible implementation, the first request includes a first voltage, and the current-pull circuit includes a current-limiting resistor and a switching circuit connected in series, wherein the current-limiting resistor is used to determine the magnitude of the target current, and the switching circuit is used to control the current-pull circuit to be turned on or off; the step of applying the target current to the negative connector through the current-pull circuit according to the first request includes: applying a first voltage to the switching circuit according to the first request; and after applying the first voltage to the switching circuit, controlling the current-pull circuit to be turned on and applying the target current to the negative connector.

[0044] In one possible implementation, the wireless earphone further includes a charging module, the charging module including a charging input terminal and a charging output terminal; the method further includes receiving the charging signal transmitted by the positive connector through the charging input terminal, and transmitting the charging signal to a device coupled to the charging output terminal.

[0045] In one possible implementation, the current-pull circuit further includes a second input terminal coupled to either the charging input terminal or the charging output terminal.

[0046] Fourthly, embodiments of this application also provide a communication method between wireless earphones and a charging case, applied to the charging case, wherein the positive and negative terminals of the charging case are respectively connected to the positive and negative connectors of the wireless earphones; the method includes:

[0047] When the charging case control module transmits a charging signal to the wireless earphones through the positive connector, it monitors the magnitude of the current at the negative connector.

[0048] When the magnitude of the current signal at the negative connector changes, the second switching module is controlled to adjust the positive connector from the state of transmitting charging signals to the state of transmitting communication signals.

[0049] Receive communication signals sent by the wireless earphone.

[0050] In one possible implementation, the magnitude of the current at the negative connector increases when the wireless earphone applies a target current to the negative connector.

[0051] In one possible implementation, the charging case includes a detection resistor and a monitoring circuit connected in series with the negative terminal, wherein the voltage across the detection resistor increases when the wireless earphone applies a target current to the negative terminal connector; and monitoring the magnitude of the current at the negative terminal connector includes monitoring the magnitude of the voltage across the detection resistor.

[0052] In one possible implementation, the monitoring circuit further includes a monitoring circuit comprising a third input terminal, a fourth input terminal, and a second output terminal, wherein the third input terminal and the fourth input terminal are respectively connected to the two ends of the detection resistor, and the second output terminal is connected to the charging box control terminal; the method further includes: after the magnitude of the current at the negative connector changes, receiving a second voltage input by the monitoring circuit through the second output terminal via the charging box control module; controlling the second switching module to adjust the positive connector from the state of transmitting charging signals to the state of transmitting communication signals includes: according to the second voltage, controlling the second switching module to adjust the positive connector from the state of transmitting charging signals to the state of transmitting communication signals.

[0053] In one possible implementation, the charging box further includes a charging box charging module, the charging box charging module including a charging box charging output terminal; the method further includes: transmitting the charging signal through a device coupled to the charging box charging module and the charging box charging output terminal.

[0054] Fifthly, this application provides an earphone charging communication device, which includes a wireless earphone and a charging case for the wireless earphone. The wireless earphone is the wireless earphone described in the first aspect or as may be involved in the first aspect, and the charging case is the charging case described in the second aspect or as may be involved in the second aspect. The positive connector and negative connector of the wireless earphone are respectively connected to the positive and negative terminals of the charging case.

[0055] Sixthly, embodiments of this application provide a computer program product including instructions that, when executed by the computer product, cause the computer product to perform the process executed by the wireless earphone in the third aspect described above.

[0056] In a seventh aspect, embodiments of this application provide another computer program product, which includes instructions that, when executed by a computer product, cause the computer product to perform the process executed by the charging box in the fourth aspect described above.

[0057] Eighthly, embodiments of this application provide a computer-readable storage medium for storing computer software instructions for use in a wireless headset provided in the first aspect, the computer software instructions including a program designed to execute the aspects described above.

[0058] In a ninth aspect, embodiments of this application provide another computer-readable storage medium for storing computer software instructions for use in a charging case for a wireless earphone provided in the second aspect above, the computer software instructions including a program designed for executing the aspects described above.

[0059] In a tenth aspect, this application provides a chip system including a processor for supporting a terminal device in implementing the functions involved in the wireless headset described in the third aspect above. In one possible design, the chip system further includes a memory for storing program instructions and data necessary for the data transmission device. This chip system may be composed of chips or may include chips and other discrete devices.

[0060] Eleventhly, this application provides another chip system, which includes a processor for supporting terminal devices in implementing the functions involved in the charging case of the wireless earphones in the fourth aspect above. In one possible design, the chip system further includes a memory for storing program instructions and data necessary for the data transmission device. This chip system can be composed of chips or may include chips and other discrete devices. Attached Figure Description

[0061] To more clearly illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application or the background art will be described below.

[0062] Figure 1 This is a schematic diagram of an earphone and charging case provided in an embodiment of this application.

[0063] Figure 2 This is a schematic diagram of a TWS earphone with three pins and a charging case provided in an embodiment of this application.

[0064] Figure 3 This is a schematic diagram of a TWS earphone with three pins that charges or communicates with a charging case, according to an embodiment of this application.

[0065] Figure 4 This is a schematic diagram of a TWS earphone with two pins and a charging case provided in an embodiment of this application.

[0066] Figure 5 This is a schematic diagram of a TWS earphone with two pins that charges or communicates with a charging case, according to an embodiment of this application.

[0067] Figure 6 This is a schematic diagram of a wireless earphone charging and communication system architecture provided in an embodiment of this application.

[0068] Figure 7 This is a functional block diagram of a current-generating circuit provided in an embodiment of this application.

[0069] Figure 8 This is a circuit diagram of a current-carrying circuit provided in an embodiment of this application.

[0070] Figure 9 This is a schematic diagram of the structure of a wireless earphone provided in an embodiment of this application.

[0071] Figure 10 This is a schematic diagram of another wireless earphone provided in an embodiment of this application.

[0072] Figure 11 This is a schematic diagram of the structure of a charging box provided in an embodiment of this application.

[0073] Figure 12 This is a schematic diagram of another charging box provided in an embodiment of this application.

[0074] Figure 13 This is a schematic diagram of another charging box provided in the embodiments of this application.

[0075] Figure 14 This is a schematic diagram of another charging box provided in the embodiments of this application.

[0076] Figure 15 This is a functional block diagram of a monitoring circuit provided in an embodiment of this application.

[0077] Figure 16 This is a circuit diagram of a monitoring circuit provided in an embodiment of this application.

[0078] Figure 17 This is a schematic flowchart of a headphone charging communication method provided in an embodiment of this application.

[0079] Figure 18 This is a schematic diagram of the structure of an earphone charging and communication device provided in an embodiment of this application.

[0080] Figure 19 This is a schematic diagram of another headphone charging and communication device provided in an embodiment of this application.

[0081] Figure 20 This is a schematic diagram of another headphone charging and communication device provided in the embodiments of this application.

[0082] Figure 21 This is a schematic diagram of another headphone charging and communication device provided in the embodiments of this application. Detailed Implementation

[0083] The embodiments of this application will now be described with reference to the accompanying drawings.

[0084] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. 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 apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0085] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0086] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0087] As used in this specification, the terms "component," "module," "system," etc., are used to refer to computer-related entities, hardware, firmware, combinations of hardware and software, software, or software in execution. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, and / or a computer. As illustrated, applications running on computing devices and computing devices can both be components. One or more components may reside in a process and / or an execution thread, and components may be located on a single computer and / or distributed among two or more computers. Furthermore, these components can be executed from various computer-readable media on which various data structures are stored. Components can communicate, for example, via local and / or remote processes based on signals having one or more data packets (e.g., data from two components interacting with another component between a local system, a distributed system, and / or a network, such as the Internet interacting with other systems via signals).

[0088] First, to facilitate understanding of the embodiments of this application, the following detailed analysis of the technical problems to be solved and the application scenarios of the embodiments of this application.

[0089] Please refer to the attached document. Figure 1 , Figure 1 This is a schematic diagram of an earphone and charging case provided in an embodiment of this application. Figure 1 As shown: True Wireless Stereo (TWS) earbuds generally consist of two parts: wireless earbuds 10 and a charging case 20. After the earbuds are placed in the case, they can communicate and charge with the charging case, i.e., the charging case charges the wireless earbuds. A connector assembly is provided at the bottom of the earbud body of the wireless earbuds 10, which is adapted to the connector assembly provided in the charging case 20 for charging or communication. In addition, a magnet is provided at the bottom of the earbud body or the top of the earbud body corresponding to the edge of the receiving cavity in the charging case 20, to be adapted to and attracted to the Hall element provided on the charging case 20. For example, in this embodiment, the contact between the wireless earbuds 10 and the charging case 20 is mainly formed by a connector (e.g., metal pins). Metal pins are a type of metal material used to conduct electricity (signals). Currently, there are two pin configurations and three pin configurations, depending on the number of pins on each wireless earbud.

[0090] In the three-pin configuration, the three metal pins are the ground (GND) pin, the charging pin, and the communication pin. Please refer to the appendix. Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of a three-pin TWS earphone and charging case provided in an embodiment of this application. Figure 3 This is a schematic diagram illustrating the structure of a three-pin TWS earphone for charging or communication with a charging case, as provided in an embodiment of this application. Wherein, as... Figure 2 As shown: Each wireless earbud is connected to the charging case via three spring-loaded metal pins. For example, Figure 3 As shown, the charging case 20 side includes a main control module 201 and a charging module 202; the wireless earphone 10 side includes an earphone main control module 101 and a charging module 102. The main control module 201 and the earphone main control module 101 transmit communication signals via a metal pin 01, such as a Universal Asynchronous Receiver / Transmitter (UART) signal. The charging module 202 and the earphone charging module 102 transmit charging signals (such as VBus) via another metal pin 02 (equivalent to the positive terminal), enabling the charging case 20 to charge the TWS wireless earphone 10. Furthermore, the common terminal (GND) of the charging module and the earphone charging module is connected via a remaining metal pin 03 (equivalent to the negative terminal). Since charging and communication are handled by two different metal pins 02 and 01 respectively, the charging and communication processes can be separated and do not interfere with each other.

[0091] However, this design results in three exposed metal pins on each earbud, which are prone to getting dirty and are unsightly. Furthermore, the three metal pins are numerous, leading to higher costs and making integration into the earbuds difficult. Therefore, to avoid the issues associated with three pins, many current TWS earbuds use a two-pin design. In this two-pin design, the two pins are designated as a common pin and a charging / communication pin. That is, charging and communication signals are transmitted through the same pin.

[0092] Please refer to the attached document. Figure 4 and Figure 5 , Figure 4 This is a schematic diagram of a TWS earphone with two pins and a charging case provided in an embodiment of this application. Figure 5 This is a schematic diagram illustrating the structure of a TWS earphone with two pins for charging or communication with its charging case, as provided in an embodiment of this application. Figure 4 As shown: Each TWS earbud is connected to the charging case via two metal pins. For example... Figure 5As shown, the charging case side includes a main control module 201, a charging module 202, and a charging communication switching module 203; the earphone side includes a main control module 101, a charging module 102, and a charging communication switching module 103. The charging communication switching module 203 on the charging case side and the charging communication switching module 103 on the earphone side transmit communication signals (such as UART signals) or charging signals through a metal pin 01 (equivalent to the positive terminal). Specifically, the charging communication switching module 203 on the charging case side transmits the communication signal or charging signal to be transmitted to the charging communication switching module 103 on the earphone side through the metal pin 01. When the charging communication switching module 103 on the earphone side detects that the transmitted signal is a charging signal, it transmits the charging signal to the charging module 102; when the charging communication switching module 103 on the earphone side detects that the transmitted signal is a communication signal, it transmits the communication signal to the main control module 101. The common terminal (GND) of the box charging module 202 and the earphone charging module 102 is connected through another metal pin 03 (equivalent to the negative terminal).

[0093] In this design, when the charging case is charging the earbuds, if communication between the charging case and the wireless earbuds is needed, the case uses a polling method. This means that the charging process is periodically interrupted to establish a communication connection with the earbuds, and charging resumes after the connection is established. This frequent polling by the case leads to frequent interruptions of the earbuds' charging process, affecting charging efficiency. Furthermore, since the earbuds cannot actively initiate communication with the charging case (i.e., the earbuds cannot actively transmit communication signals to the case), the charging case cannot promptly detect abnormal situations of the earbuds (such as failure to charge or completion of charging).

[0094] Therefore, to avoid frequently disturbing the wireless earphones' charging state during charging and to allow the wireless earphones to actively initiate communication with the charging case, this embodiment adds a current-pull circuit to the wireless earphones. Specifically, when the wireless earphones receive the charging signal transmitted from the charging case through the positive connector, the wireless earphones can generate a first request through the earphone control module. After generating the first request, the wireless earphones apply a target current to the negative connector through the current-pull circuit, and then monitor whether the positive connector is adjusted to the state of transmitting the communication signal; when the positive connector is adjusted to the state of transmitting the communication signal, communication with the charging case can commence. That is, when the charging case charges the wireless earbuds, the current-pull circuit on the wireless earbud side generates an instantaneous current to ground in the charging path. When the charging case detects this instantaneous current, it actively switches the charging state between the wireless earbuds and the charging case to the communication state (i.e., the positive connector is adjusted from the state of transmitting charging signals to the state of transmitting communication signals) and then communicates with the wireless earbuds. In this way, the wireless earbuds can decide independently whether to initiate communication with the charging case, avoiding the charging case frequently interrupting the charging state to ask the wireless earbuds whether to communicate, which greatly improves charging efficiency and communication efficiency.

[0095] Therefore, the embodiments of this application can enable communication between the charging case and the earphones without disturbing the charging state of the wireless earphones during the charging process.

[0096] Furthermore, the wireless earphone device mentioned in this application, which enables communication with the charging case without disturbing the charging state of the wireless earphones during charging, can also be applied to various terminal devices that have only one or two connectors and cannot transmit multiple different types of signals (e.g., charging signals and communication signals) simultaneously. Examples include electric toothbrushes and their charging bases, electric shavers and their charging bases, etc. This application does not specifically limit these applications to such devices.

[0097] Secondly, based on the aforementioned technical problems and the corresponding application scenarios in this application, and to facilitate understanding of the embodiments of this application, the following describes one type of wireless earphone charging and communication system architecture upon which the embodiments of this application are based. A connector assembly is provided at the bottom of the earphone body of the wireless earphone 10, which is adapted to the connector assembly provided inside the charging case 20 for charging or communication. Additionally, a magnet is provided at the bottom of the earphone body or the top of the main body of the wireless earphone 10 corresponding to the edge of the receiving cavity entrance in the charging case 20, to be adapted to and attracted to the Hall element provided on the charging case 20. In this embodiment, the positive and negative terminals of the charging case 20 are respectively connected to the positive and negative connectors of the wireless earphone 10, and the positive and negative terminals of the charging case 20 are the connector assemblies of the charging case 20 corresponding to the positive and negative connectors of the wireless earphone 10. In one possible implementation, the positive and negative connectors can be a first metal PIN and a second metal PIN, respectively, and the positive and negative terminals can also be connection components of the charging case 20, adapted to the positive and negative connectors respectively. The metal PIN can be a metallic material used to conduct charging signals or transmit communication signals. Therefore, this metal PIN ensures that the wireless earphones and charging case can charge and communicate.

[0098] Additionally, please see Figure 6 , Figure 6 This is a schematic diagram of a wireless earphone charging and communication system architecture provided in an embodiment of this application. The wireless earphone charging and communication system architecture in this application may include... Figure 1 The wireless earbuds 10 and charging case 20 are included. Figure 6 As shown, the charging case 20 side includes a charging case control module 211 and a second switching module 212, and may also include a case charging module 213; the wireless earphone side includes an earphone control module 111, a current-drawing circuit 112 and a first switching module 113, and may also include a charging module 114.

[0099] First, the charging signal can travel from the charging module 213 in the charging case 20 through the second switching module 212, the positive terminal, the positive terminal connector, and the first switching module 113 in the wireless earphone 10 to the charging module 114, so that the charging module 114 can provide power to the module coupled to it. The charging module 213 and the charging module 114 are connected to a common ground via the negative terminal and the negative terminal connector to form a complete current loop.

[0100] Communication signals can travel from the charging case control module 211 in the charging case 20 through the second switching module 212, the positive terminal, the positive terminal connector, and the first switching module 113 on the wireless earphone 10 side to the earphone control module 111. Communication signals can also travel from the earphone control module 111 on the wireless earphone 10 side through the first switching module 113, the positive terminal connector, the positive terminal, and the second switching module 212 in the charging case 20 to the charging case control module 211. Communication signals can be transmitted between the charging case 20 and the wireless earphone 10.

[0101] The second switching module 212 can control the switching of the positive connector's signal transmission state (e.g., switching from transmitting a charging signal to transmitting a communication signal, or vice versa), so that the first switching module 113 switches accordingly. That is, the first switching module 113 follows the second switching module 212 from transmitting a charging signal to the charging module 114 to transmitting a communication signal to the headphone control module 111. Alternatively, the first switching module 113 can also follow the second switching module 212 from transmitting a communication signal to the charging module 114 to transmitting a charging signal to the headphone control module 111.

[0102] Secondly, regarding the above Figure 6 The wireless earphone 10 shown:

[0103] The earphone control module 111 is configured to generate a first request when the wireless earphone receives a charging signal transmitted from the charging case via the positive connector. This first request requests communication with the charging case. Specifically, when the charging case 20 transmits a charging signal to the wireless earphone 10 via the positive connector, the wireless earphone 10 generates a request to communicate with the charging case 20. The aforementioned charging signal is an electrical signal used to charge the wireless earphone 10, and it includes voltage and current information.

[0104] The current-pull circuit 112 is used to apply a target current to the negative connector according to the first request. This target current is used by the charging case to control the positive connector to switch from transmitting a charging signal to transmitting a communication signal. The current-pull circuit 112 generates a target current superimposed on the charging current along the charging path. Please refer to the appendix. Figure 7 , Figure 7 This is a functional block diagram of a current-collecting circuit provided in an embodiment of this application. For example... Figure 7As shown, when the wireless earphone 10 needs to communicate with the charging case 20, the earphone control module 111 generates a first request, which activates the current-pull circuit 112. The current-pull circuit 112 generates a target current in the power supply path through a current-limiting resistor and a switching transistor. The generated target current is achieved jointly by the switching circuit and the current-limiting resistor. For example, the target current can be an instantaneous current, and its magnitude can be 100mA. Furthermore, this embodiment does not impose specific limitations on the magnitude of the current.

[0105] Optionally, the first request includes a first voltage, and the current-pull circuit 112 includes a first input terminal and a first output terminal; the earphone control module 111 is further configured to: apply the first voltage to the current-pull circuit 112 through the first input terminal; the current-pull circuit 112 is specifically configured to: after the earphone control module 111 applies the first voltage through the first input terminal, the current-pull circuit 112 is turned on and outputs the target current to the negative connector through the first output terminal. If the wireless earphone actively initiates communication with the charging case during charging, the wireless earphone can generate a first request, that is, apply the first voltage to the current-pull circuit, so that the current-pull circuit 112 is turned on and outputs the target current to the negative connector through the first output terminal, thereby the charging case adjusts the positive connector from the state of transmitting charging signals to the state of transmitting communication signals, ensuring smooth communication between the wireless earphone and the charging case.

[0106] Optionally, the first request includes a first voltage, and the current-pull circuit 112 includes a current-limiting resistor and a switching circuit connected in series, wherein the current-limiting resistor is used to determine the magnitude of the target current, and the switching circuit is used to control the conduction or disconnection of the current-pull circuit 112; the headphone control module 111 is specifically used to: apply the first voltage to the switching circuit; the current-pull circuit 112 is specifically used to: after applying the first voltage to the switching circuit, control the current-pull circuit 112 to conduct and output the target current to the negative connector. Please refer to the appendix. Figure 8 , Figure 8 This is a circuit diagram of a current-collecting circuit provided in an embodiment of this application. For example... Figure 8 As shown, the current-pull circuit 112 is implemented by a current-limiting resistor R1 and a switching circuit Q1 connected in series. The current-limiting resistor R1 controls the magnitude of the target current, preventing overload and damage to components. The switching circuit Q1 controls the on / off state of the current-pull circuit 112. When the current-pull circuit 112 is on, current can be supplied to the negative connector (e.g., ...). Figure 8The ground terminal shown outputs the target current, so that when the charging case detects a change in the negative connector current, it adjusts the positive connector from transmitting a charging signal to transmitting a communication signal, ensuring smooth communication between the wireless earphones and the charging case. In this application, the switching circuit Q1 is an N-type metal-oxide-semiconductor MOSFET. The N-channel MOSFET operates at V... GS <V T (Turn-on voltage, V) T When the voltage is less than the first voltage specified in this application, a conductive channel cannot be formed, and the tube is in a cut-off state. Only when V... GS ≥V T Only when this happens can a channel be formed. After the channel is formed, a positive voltage V is applied between the drain and source. DS (The power supply of the current-generating circuit 112) will generate drain current. For example... Figure 8 As can be seen from the circuit structure shown, V CTRL A first voltage V can be provided to the headphone control module 111. CTRL The value is greater than the turn-on voltage V of the switch circuit Q1. T The magnitude of the voltage. The positive voltage V applied between the drain and source. DD The power supply that can be provided to the current-generating circuit 112 is not specifically limited in this embodiment of the application.

[0107] It is understandable that the current-limiting resistor R1 should be larger than V. DD Divide by (charging current minus preset target current) to ensure that the device is not damaged due to current overload. Here, the charging current is the current to ground applied to the negative connector during normal charging; the preset target current is the magnitude of a pre-set target current.

[0108] It should be noted that V in the current-collecting circuit 112 G The input terminal corresponding to the (gate voltage) is equivalent to the first input terminal mentioned above, and the output terminal of the source is equivalent to the first output terminal mentioned above.

[0109] It should also be noted that the switching circuit can also be a P-type metal oxide semiconductor MOSFET, a transistor, or other switching transistors, and the embodiments of this application do not specifically limit this.

[0110] It should also be noted that the above Figure 8 This explanation uses only NMOS transistors as an example. Figure 8 The structure of the current-carrying circuit in the present application does not constitute a limitation on the embodiments thereof.

[0111] The first switching module 113 is used to monitor whether the positive connector has been adjusted to the state of transmitting communication signals. Specifically, the first switching module 113 can monitor the state of the signal transmitted by the positive connector. The first switching module 113 can switch in tandem with the switching of the second switching module 212. For example, the first switching module 113 can determine whether the charging case 20 and the wireless earphone 10 are in a charging state or a communication state based on changes in the signal at the positive connector. When the charging case 20 and the wireless earphone 10 are in a charging state, the positive connector is in the state of transmitting charging signals; when the charging case 20 and the wireless earphone 10 are in a communication state, the positive connector is in the state of transmitting communication signals.

[0112] Optionally, the first switching module 113 is specifically used to: monitor the voltage at the positive connector, wherein the voltage of the positive connector in the state of transmitting a charging signal is greater than the voltage in the state of transmitting a communication signal. The earphone control module 111 is specifically used to: communicate with the charging case after the voltage at the positive connector decreases. Since the voltage of the positive connector in the state of transmitting a charging signal is greater than the voltage in the state of transmitting a communication signal, the wireless earphone can determine whether the charging case is in a charging state or a communication state by monitoring the voltage at the positive connector. When the voltage at the positive connector decreases, the first switching module 113 can determine that the charging case 20 adjusts the positive connector from the state of transmitting a charging signal to the state of transmitting a communication signal. When the voltage at the positive connector increases, the first switching module 113 can determine that the charging case 20 adjusts the positive connector from the state of transmitting a communication signal to the state of transmitting a charging signal. After the charging case switches from the charging state to the communication state, the wireless earphone can communicate with the charging case, avoiding the charging case frequently interrupting the charging state to inquire whether the wireless earphone is communicating, greatly improving charging efficiency and communication efficiency.

[0113] Optionally, the first switching module 113 is also used to forward the communication signal transmitted by the positive connector to the headphone control module 111 after receiving the communication signal; and to forward the charging signal transmitted by the positive connector to the charging module 114 after receiving the charging signal.

[0114] The headphone control module 111 is also used to communicate with the charging case when the positive connector is adjusted to the state of transmitting communication signals. Specifically, when the charging case 20 adjusts the positive connector from the state of transmitting charging signals to the state of transmitting communication signals, the headphone control module 111 can send communication signals through the first switching module 113 and the second switching module 212 to the charging case control module of the charging case 20.

[0115] Optionally, the wireless earphones further include a charging module 114, which includes a charging input terminal and a charging output terminal. The charging module 114 is used to receive the charging signal transmitted through the positive connector via the charging input terminal and to transmit the charging signal to a device coupled to the charging output terminal. The wireless earphones can receive electrical signals transmitted from the charging case through the charging module to ensure that the wireless earphones are in a charging state.

[0116] It should be noted that for the current-collecting circuit 112, please refer to the appendix. Figure 9 and Figure 10 , Figure 9 This is a schematic diagram of the structure of a wireless earphone provided in an embodiment of this application. Figure 10 This is a schematic diagram of another wireless earphone provided in an embodiment of this application. Figure 9 As shown, the charging input terminal V of the charging module 114 BUS The power supply provided for the current-source circuit 112 is based on the above. Figure 8 The current-pull circuit shown has the charging input terminal V of the charging module 114. BUS This is equivalent to the positive voltage V applied between the drain and source in a current-carrying circuit. DD .like Figure 10 As shown, the charging output terminal V of the charging module 114 SYS The power supply provided for the current-source circuit 112 is based on the above. Figure 8 The current-pull circuit shown has the charging input terminal V of the charging module 114. BUS This is equivalent to the positive voltage V applied between the drain and source in a current-carrying circuit. DD In this design, power is supplied to the current-collecting circuit via the charging input or output terminal of the charging module, reducing the number of power supply components in the current-collecting circuit and improving power utilization during charging, thus saving space inside the wireless earphones. Furthermore, since the output voltage of the charging output terminal needs to be determined in conjunction with the power supply components in the charging module 114, compared to using the charging output terminal V of the charging module 114… SYS It directly utilizes the charging input terminal V of the charging module 114 BUS Providing power to the current-pull circuit allows for better control over the magnitude of the target current output by the current-pull circuit.

[0117] In this embodiment, when the wireless earphone receives the charging signal transmitted by the charging case through the positive connector, the wireless earphone can generate a first request through the earphone control module. After generating the first request, the wireless earphone applies a target current to the negative connector through a current-pull circuit, and then monitors whether the positive connector is adjusted to the state of transmitting communication signals. When the positive connector is adjusted to the state of transmitting communication signals, it can communicate with the charging case. That is, when the charging case charges the wireless earphone, the current-pull circuit on the wireless earphone side generates an instantaneous current to ground in the charging path. Upon detecting this instantaneous current, the charging case actively switches the charging state between the wireless earphone and the charging case to the communication state (i.e., the positive connector is adjusted from the state of transmitting charging signals to the state of transmitting communication signals) and then communicates with the wireless earphone. This allows the wireless earphone to autonomously decide whether to initiate communication with the charging case, avoiding the charging case frequently interrupting the charging state to inquire whether the wireless earphone should communicate, thus greatly improving charging and communication efficiency.

[0118] In response to the above Figure 6 The charging case 20 of the wireless earbuds 10 shown:

[0119] The charging case 20 includes:

[0120] The charging case control module is used to monitor the magnitude of the current at the negative connector when transmitting a charging signal to the wireless earphone through the positive connector.

[0121] The charging box control module is also used to control the second switching module to adjust the positive connector from the state of transmitting charging signals to the state of transmitting communication signals when the magnitude of the current at the negative connector changes.

[0122] The charging case control module is also used to receive communication signals sent by the wireless earphones.

[0123] In this embodiment, the charging case control module 211 can directly monitor the state (e.g., current change) at the negative connector during the charging process of the wireless earphones. That is, the monitoring part is composed of the internal circuitry of the charging case 20, without any external components. When the state at the negative connector changes, a switching command is sent to the second switching module 212 to control the second switching module 212 to adjust the positive connector from the state of transmitting charging signals to the state of transmitting communication signals. This ensures that when the wireless earphones transmit communication signals through the positive connector, the charging case control module 211 can receive the communication signal forwarded by the second switching module 212, completing the communication process with the wireless earphones 10. The switching command is equivalent to a communication signal and can be sent directly from the charging case control module 211 to the second switching module 212.

[0124] Optionally, the negative connector itself has inherent resistance, and according to Joule's law, U = IR, where U is voltage, I is current, and R is resistance. Therefore, the charging case control module can monitor the current at the negative connector by monitoring the voltage at the negative connector. Please refer to the appendix. Figure 11 , Figure 11 This is a schematic diagram of the structure of a charging box provided in an embodiment of this application, as shown below. Figure 11 As shown, the charging case control module 211 may include two input terminals, which respectively acquire voltage signals from both ends of the negative connector. For example, it can be achieved through... Figure 11 This is achieved as shown. When the current at the negative connector changes, the voltage across the negative connector also changes. The charging box control module 211 can control the second switching module to promptly switch the positive connector from the state of transmitting charging signals to the state of transmitting communication signals based on this change.

[0125] In one possible implementation, the charging case further includes: a detection resistor connected in series with the negative terminal, wherein the voltage across the detection resistor increases when the wireless earphone applies a target current to the negative terminal connector; the charging case control module is specifically used to: monitor the magnitude of the voltage across the detection resistor.

[0126] Please refer to the attached document. Figure 12 , Figure 12 This is a schematic diagram of another charging case provided in an embodiment of this application, as shown below. Figure 12 As shown, to better monitor current changes at the negative connector, a sensing resistor can be connected in series with the negative terminal. This series-connected resistor carries the same current as both the negative terminal and the negative connector. Therefore, the sensing resistor can convert the current signal at the negative connector into a voltage signal across the sensing resistor connected in series with the negative connector. In other words, when determining whether the wireless earphone is applying a target current to the negative connector, monitoring the voltage across the sensing resistor connected in series with the negative terminal and thus with the negative connector can significantly reduce the difficulty of monitoring and improve its accuracy.

[0127] In one possible implementation, the charging box further includes a monitoring circuit, which includes a third input terminal, a fourth input terminal, and a second output terminal. The third input terminal and the fourth input terminal are respectively connected to the two ends of the detection resistor, and the second output terminal is connected to the charging box control terminal. The charging box control module is specifically used to: receive a second voltage input by the monitoring circuit through the second output terminal after the magnitude of the current at the negative connector changes; and control the second switching module to adjust the positive connector from the state of transmitting charging signals to the state of transmitting communication signals based on the second voltage.

[0128] Please refer to the appendix. Figure 13 , Figure 13 This is a schematic diagram of another charging box provided in the embodiments of this application, as shown below. Figure 13 As shown, to better monitor current changes at the negative connector, the charging case 20 may further include a monitoring circuit 214, which can implement some of the functions in the charging case control module 211. For example, when transmitting a charging signal to the wireless earphones through the positive connector, the magnitude of the current at the negative connector is monitored. That is, to better monitor current changes at the negative connector, the monitoring function is separated from the charging case control module 211, such as... Figure 13 As shown, the monitoring circuit 214 includes a third input terminal, a fourth input terminal, and a second output terminal. The third and fourth input terminals are respectively connected to the two ends of the detection resistor R2, and the second output terminal is connected to the charging box control module 211. After the magnitude of the current at the negative connector changes, the charging box control module 211 receives a second voltage input by the monitoring circuit through the second output terminal; based on the second voltage, it controls the second switching module 212 to adjust the positive connector from the state of transmitting charging signals to the state of transmitting communication signals.

[0129] Furthermore, changes in the voltage signal at the detection resistor connected in series with the negative connector can reflect changes in the current at the negative connector. After the monitoring circuit detects these changes, it outputs a second voltage and feeds this second voltage back to the charging case control module. This second voltage then controls the second switching module to switch the positive connector from transmitting charging signals to transmitting communication signals. This allows the wireless earbuds to autonomously decide whether to initiate communication with the charging case, avoiding the charging case frequently interrupting the charging process to query the earbuds, thus significantly improving both charging and communication efficiency.

[0130] Optionally, if there is no negative terminal series sensing resistor R2, please refer to the appendix. Figure 14 , Figure 14This is a schematic diagram of another charging box provided in the embodiments of this application, as shown below. Figure 14 As shown, the charging box also includes a monitoring circuit 214, which includes a third input terminal, a fourth input terminal, and a second output terminal. The third and fourth input terminals are respectively connected to the two ends of the negative connector, and the second output terminal is connected to the charging box control terminal. The charging box control module is specifically used to: receive a second voltage input by the monitoring circuit through the second output terminal after the magnitude of the current at the negative connector changes; and control the second switching module to adjust the positive connector from the state of transmitting charging signals to the state of transmitting communication signals based on the second voltage. Since the two input terminals of the monitoring circuit are coupled to the two ends of the negative connector, the monitoring circuit can monitor the voltage change at the two ends of the negative connector to output a second voltage, thereby enabling the charging box control module 211 to control the second switching module 212 to switch the transmission state of the positive connector.

[0131] It should be noted that, as mentioned above Figure 11 and Figure 14 The charging case structure shown typically has a negative connector with an inherent resistance of 0.2 ohms to 0.5 ohms. Therefore, to more accurately and conveniently monitor whether the wireless earphones have a communication intention, a better solution is to use a detection resistor R2.

[0132] Additionally, please refer to the appendix. Figure 15 , Figure 15 This is a functional block diagram of a monitoring circuit provided in an embodiment of this application. For example... Figure 15 As shown, when the target current passes through the detection resistor, the detection resistor converts the target current into a voltage. When the monitoring circuit 214 detects this voltage change, the monitoring circuit 214 outputs a second voltage to the charging box control module, so that the charging box control module can control the switching of the transmission state at the positive connector. This monitoring circuit 214 can be implemented using an operational amplifier comparator.

[0133] Based on the above Figure 13 The charging case structure shown above and the above Figure 15 The functional block diagram of the monitoring circuit shown in this application provides a circuit diagram illustrating a possible implementation of the monitoring circuit. Please refer to the appendix. Figure 16 , Figure 16 This is a circuit diagram of a monitoring circuit provided in an embodiment of this application. Figure 16 As shown, the monitoring circuit includes an operational amplifier comparator U1. The two input terminals V1 and V2 of the operational amplifier comparator U1 (equivalent to the above...) Figure 13 and Figure 14The third and fourth input terminals of the monitoring circuit are coupled to the two ends of the detection resistor R2, respectively, to detect the voltage across the detection resistor R2; the output terminal of the operational amplifier comparator U1 (equivalent to the above) Figure 13 and Figure 14 The second input terminal of the monitoring circuit is coupled to the charging case control module and is used to output a second voltage to the charging case control module; the ground terminal GND of the operational amplifier comparator is grounded, and the power supply terminal VDD is connected to a preset power supply. When the target current flows, the input of the operational amplifier increases. When it exceeds a set threshold (which can be set based on the operational amplifier comparator), an interrupt signal (i.e., the second voltage) can be generated to inform the charging case control module, and the wireless earphone 10 will actively initiate a communication signal. The threshold of the operational amplifier comparator can also be set to different values ​​for different charging levels.

[0134] In one possible implementation, the charging case further includes a charging module, which includes a charging output terminal. The charging module is used to transmit the charging signal through a device coupled to the charging output terminal. In this embodiment, the charging case can charge the wireless earphones via the charging module to maintain a charging state with the earphones.

[0135] Currently, wireless earbuds connect to the charging case via two connectors; for example, the positive and negative connectors of the earbuds are connected to the positive and negative terminals of the charging case, respectively. Therefore, charging signals and communication signals cannot be transmitted to the charging case simultaneously. In existing technology, the charging case needs to periodically interrupt the charging process of the wireless earbuds to establish a communication connection, and then continue charging after the communication is complete to ensure that the earbuds can maintain communication with the charging case periodically. However, this frequently interrupts the charging process, affecting charging efficiency; simultaneously, since the earbuds cannot actively initiate communication with the case during charging, the case cannot promptly detect any abnormalities in the earbuds. Therefore, this application provides an embodiment of a wireless earbud that can actively communicate with the charging case without frequently interrupting the charging process. Specifically, when the wireless earbuds receive the charging signal transmitted by the charging case through the positive connector, the earbuds can generate a first request through the earbud control module. At this point, after generating the first request, the wireless earphone applies a target current to the negative connector through a current-pull circuit, and then monitors whether the positive connector is adjusted to the state of transmitting communication signals. When the positive connector is adjusted to the state of transmitting communication signals, it can communicate with the charging case. That is, when the charging case charges the wireless earphone, the current-pull circuit on the wireless earphone side generates an instantaneous current to ground in the charging path. When the charging case detects this instantaneous current, it actively switches the charging state between the wireless earphone and the charging case to the communication state (i.e., the positive connector is adjusted from the state of transmitting charging signals to the state of transmitting communication signals) and then communicates with the wireless earphone. This allows the wireless earphone to autonomously decide whether to initiate communication with the charging case, avoiding the charging case frequently interrupting the charging state to inquire whether the wireless earphone should communicate, greatly improving charging and communication efficiency.

[0136] Understandable Figure 6 The wireless headphone charging communication system architecture described above is only one exemplary implementation in this application. The wireless headphone charging communication system architecture in this application includes, but is not limited to, the above-described wireless headphone charging communication system architecture.

[0137] It should be noted that the above Figure 9 and the above Figure 10 The structures of the two wireless earphones 10 shown can be respectively compared with those described above. Figure 11 Up to the above Figure 14 Any one of the four structures of the charging box 20 shown can be combined in pairs to form the above-mentioned structure. Figure 6 The wireless earphone charging and communication system architecture is shown. For example, in one possible system architecture, the structure of the wireless earphone 10 is as described above. Figure 9The wireless earbuds shown have the charging case 20 structure described above. Figure 12 The charging case shown is not specifically limited in this embodiment of the application.

[0138] based on Figure 6 The provided wireless earphone charging communication system architecture, and the above Figure 9 and the above Figure 10 The structures of the two wireless earphones 10 shown can be respectively compared with those described above. Figure 11 Up to the above Figure 14 The four types of charging box 20 structures shown, combined with the headphone charging communication method provided in this application, provide a specific analysis and solution to the technical problems raised in this application.

[0139] See Figure 17 , Figure 17 This is a flowchart illustrating a headphone charging communication method provided in an embodiment of this application. This method can be applied to the above-mentioned... Figure 6 In the headphone charging communication system architecture described herein, the wireless headphone 10 can be used to support and execute... Figure 17 The method flow steps S301-S302 and S305-S306 shown can be supported and executed by the charging box 20. Figure 17 The method flow shown includes steps S303-S304 and S307. The following will refer to the appendix... Figure 17 The method is described in terms of how the wireless earbuds 10 interact with the charging case 20. The method may include the following steps S301-S307.

[0140] Step S301: The wireless earphone receives the charging signal transmitted by the charging case through the positive connector, and the wireless earphone generates a first request through the earphone control module.

[0141] Specifically, when the wireless earphone receives the charging signal transmitted by the charging case through the positive connector, the wireless earphone generates a first request through the earphone control module. The first request is used to request communication with the charging case.

[0142] Optionally, the positive and negative connectors can be a first metal PIN and a second metal PIN, such as a spring-loaded pin. The metal PIN can be a metallic material used to conduct charging signals or transmit communication signals. Therefore, this metal PIN ensures charging and communication between the wireless earphones and the charging case.

[0143] Step S302: The wireless earphone applies a target current to the negative connector through a current-pull circuit according to the first request.

[0144] Specifically, according to the first request, the wireless earphone applies a target current to the negative connector through a current-pull circuit. The target current is used by the charging case to control the positive connector to switch from transmitting charging signals to transmitting communication signals.

[0145] Optionally, the first request includes a first voltage, and the current-pull circuit has a first input terminal and a first output terminal; applying a target current to the negative connector through the current-pull circuit according to the first request includes: applying the first voltage to the current-pull circuit through the first input terminal according to the first request; after applying the first voltage to the current-pull circuit, the current-pull circuit is turned on and applies the target current to the negative connector through the first output terminal. If the wireless earphone actively initiates communication with the charging case during charging, the wireless earphone can generate a first request, that is, apply the first voltage to the current-pull circuit, so that the current-pull circuit is turned on and outputs the target current to the negative connector through the first output terminal, thereby the charging case adjusts the positive connector from the state of transmitting charging signals to the state of transmitting communication signals, ensuring smooth communication between the wireless earphone and the charging case.

[0146] Optionally, the first request includes a first voltage, and the current-pull circuit includes a current-limiting resistor and a switching circuit connected in series. The current-limiting resistor is used to determine the magnitude of the target current, and the switching circuit is used to control the conduction or disconnection of the current-pull circuit. Applying the target current to the negative connector through the current-pull circuit according to the first request includes: applying a first voltage to the switching circuit according to the first request; and after applying the first voltage to the switching circuit, controlling the current-pull circuit to conduct and applying the target current to the negative connector. The current-pull circuit is implemented by a current-limiting resistor and a switching circuit connected in series. The current-limiting resistor can control the magnitude of the target current, preventing overload and device damage. The switching circuit can control the conduction or disconnection of the current-pull circuit; for example, the switching circuit can be a metal-oxide-semiconductor (MOSFET), a transistor, or other switching transistor. When the current-pull circuit is on, the target current can be output to the negative connector, so that when the charging case detects a change in the current of the negative connector, it adjusts the positive connector from transmitting a charging signal to transmitting a communication signal, ensuring smooth communication between the wireless earphones and the charging case.

[0147] Optionally, the wireless earphone further includes: a charging module, the charging module including a charging input terminal and a charging output terminal; the method further includes: receiving the charging signal transmitted by the positive connector through the charging input terminal, and transmitting the charging signal to a device coupled to the charging output terminal. Based on the above... Figure 6The illustrated headphone charging communication system architecture allows the charging signal to travel from the charging module 213 in the charging case 20 through the second switching module 212, the positive terminal, the positive connector, and the first switching module 113 in the wireless headphones 10 to the charging module 114, so that the charging module 114 can provide power to the modules coupled to it. The charging module 213 and the charging module 114 are connected to a common ground via the negative terminal and the negative connector to form a complete current loop.

[0148] Optionally, the current-pull circuit further includes a second input terminal, which is coupled to the charging input terminal or the charging output terminal.

[0149] Step S303: The charging box monitors the current at the negative connector.

[0150] Specifically, when the charging box control module transmits a charging signal to the wireless earphones through the positive connector, the charging box monitors the current at the negative connector.

[0151] Optionally, when the wireless earphone applies a target current to the negative connector, the magnitude of the current at the negative connector increases.

[0152] Optionally, the charging case includes a detection resistor and a monitoring circuit connected in series with the negative terminal, wherein when the wireless earphone applies a target current to the negative terminal connector, the voltage across the detection resistor increases; monitoring the magnitude of the current at the negative terminal connector includes monitoring the magnitude of the voltage across the detection resistor. The detection resistor can convert the current signal monitored at the negative terminal connector into a voltage signal monitored at the detection resistor connected in series with the negative terminal connector. That is, when determining whether the wireless earphone applies a target current to the negative terminal connector, the voltage across the detection resistor connected in series with the negative terminal and thus with the negative terminal connector can be monitored, greatly reducing the monitoring difficulty and improving the monitoring accuracy.

[0153] Optionally, the charging case further includes a charging module, which includes a charging output terminal. The method further includes transmitting the charging signal through a device coupled to the charging module and the charging output terminal. The wireless earbuds can receive the electrical signal transmitted by the charging case through the charging module to ensure a charging state between the wireless earbuds and the charging case.

[0154] Step S304: When the magnitude of the current signal at the negative connector of the charging box changes, the second switching module is controlled to switch the positive connector from the state of transmitting charging signals to the state of transmitting communication signals.

[0155] Specifically, when the magnitude of the current signal at the negative connector changes, the charging case controls the second switching module to switch the positive connector from transmitting a charging signal to transmitting a communication signal. When a change in the magnitude of the current signal at the negative connector is detected, feedback is sent to the charging case control module, which then controls the second switching module to switch the positive connector from transmitting a charging signal to transmitting a communication signal.

[0156] Optionally, the monitoring circuit further includes a monitoring circuit with a third input terminal, a fourth input terminal, and a second output terminal. The third and fourth input terminals are respectively connected to the two ends of the detection resistor, and the second output terminal is connected to the charging case control terminal. The method further includes: after a change in the current at the negative connector, receiving a second voltage input by the monitoring circuit through the second output terminal via the charging case control module; controlling the second switching module to adjust the positive connector from the state of transmitting a charging signal to the state of transmitting a communication signal includes: based on the second voltage, controlling the second switching module to adjust the positive connector from the state of transmitting a charging signal to the state of transmitting a communication signal. The change in the voltage signal at the detection resistor connected in series with the negative connector can reflect the change in the current at the negative connector. After the monitoring circuit detects the change in the voltage signal, it outputs a second voltage based on the change and feeds the second voltage back to the charging case control module to control the second switching module to adjust the positive connector from the state of transmitting a charging signal to the state of transmitting a communication signal.

[0157] Step S305: The wireless earphone monitors whether the positive connector has been adjusted to the state of transmitting communication signals through the first switching module.

[0158] Specifically, the wireless earphone uses the first switching module to monitor whether the positive connector has been adjusted to the state of transmitting communication signals.

[0159] Optionally, the wireless earphones monitor whether the positive connector is adjusted to the state of transmitting communication signals via a first switching module, including: monitoring the voltage at the positive connector via the first switching module, wherein the voltage of the positive connector in the state of transmitting charging signals is greater than the voltage in the state of transmitting communication signals. The step of communicating with the charging case via the earphone control module when the positive connector is adjusted to the state of transmitting communication signals includes: communicating with the charging case via the earphone control module after the voltage at the positive connector decreases. Since the voltage of the positive connector in the state of transmitting charging signals is greater than the voltage in the state of transmitting communication signals, the wireless earphones can determine whether the charging case is in a charging state or a communication state by monitoring the voltage at the positive connector.

[0160] Step S306: With the positive connector of the wireless earphones adjusted to transmit communication signals, the earphones communicate with the charging case through the earphone control module.

[0161] Specifically, with the positive connector set to transmit communication signals, the wireless earbuds communicate with the charging case via the earbud control module.

[0162] Step S307: The charging case receives communication from the wireless earphones.

[0163] Specifically, the charging case receives communication from the wireless earbuds. Based on the above... Figure 6 The illustrated headphone charging communication system architecture allows communication signals to travel from the charging case control module 211 in the charging case 20 through the second switching module 212, the positive terminal, the positive terminal connector, and the first switching module 113 on the wireless earphone 10 side to the headphone control module 111. Communication signals can also travel from the headphone control module 111 on the wireless earphone 10 side through the first switching module 113, the positive terminal connector, the positive terminal, and the second switching module 212 in the charging case 20 to the charging case control module 211. Communication signals can be transmitted between the charging case 20 and the wireless earphone 10.

[0164] This application provides a headphone charging communication method that allows wireless headphones to actively communicate with the charging case without frequently interrupting the headphone charging process. Specifically, when the wireless headphones receive a charging signal from the charging case via the positive connector, the wireless headphones can generate a first request through the headphone control module. After generating the first request, the wireless headphones apply a target current to the negative connector via a current-pull circuit, and then monitor whether the positive connector has adjusted to the state of transmitting a communication signal. Upon detecting that the wireless headphones have applied the target current to the negative connector via the current-pull circuit, the charging case control module controls a second switching module to switch the positive connector from transmitting a charging signal to transmitting a communication signal. Once the wireless headphones detect that the positive connector has adjusted to the state of transmitting a communication signal, they can communicate with the charging case. That is, when the charging case charges the wireless earbuds, the current-pull circuit on the wireless earbud side generates an instantaneous current to ground in the charging path. When the charging case detects this instantaneous current, it actively switches the charging state between the wireless earbuds and the charging case to the communication state (i.e., the positive connector is adjusted from the state of transmitting charging signals to the state of transmitting communication signals) and then communicates with the wireless earbuds. In this way, the wireless earbuds can decide independently whether to initiate communication with the charging case, avoiding the charging case frequently interrupting the charging state to ask the wireless earbuds whether to communicate, which greatly improves charging efficiency and communication efficiency.

[0165] This application also provides an earphone charging and communication device, which includes a wireless earphone and a charging case for the wireless earphone. The wireless earphone is the one described above. Figure 9 or Figure 10 The wireless earphones that may be involved, and the charging case is as described above. Figure 11 Up to the above Figure 14 The charging case that may be involved, wherein the positive connector and negative connector of the wireless earphone are connected to the positive and negative terminals of the charging case, respectively.

[0166] Based on the aforementioned headphone charging communication system architecture, this application provides a headphone charging communication device applied to the aforementioned headphone charging communication system architecture. Please refer to [link to relevant documentation]. Figure 18 , Figure 18 This is a schematic diagram of the structure of a headphone charging and communication device 100 provided in an embodiment of this application. The headphone charging and communication device 100 is applied to a wireless headphone. The positive and negative connectors of the wireless headphone are respectively connected to the positive and negative terminals of the charging case, and the charging case is compatible with the wireless headphone. Figure 18 As shown, the headphone charging and communication device may include a generation unit 401, a current unit 402, a first monitoring unit 403, a communication unit 404, and may further include a charging unit 405. Wherein,

[0167] The generation unit 401 is configured to: generate a first request when the wireless earphone receives a charging signal transmitted by the charging case through the positive connector, wherein the first request is used to request communication with the charging case.

[0168] The current unit 402 is used to: apply a target current to the negative connector through a current-pull circuit according to the first request, wherein the target current is used by the charging box to control the positive connector to switch from transmitting a charging signal to transmitting a communication signal.

[0169] The first monitoring unit 403 is used to monitor whether the positive connector is adjusted to the state of transmitting communication signals.

[0170] The communication unit 404 is used to communicate with the charging case through the headphone control module when the positive connector is adjusted to the state of transmitting communication signals.

[0171] In one possible implementation, the positive connector and the negative connector can be a first metal PIN and a second metal PIN, respectively.

[0172] In one possible implementation, the first monitoring unit 403 is specifically configured to: monitor the voltage at the positive connector via the first switching module, wherein the voltage at the positive connector during the state of transmitting a charging signal is greater than the voltage during the state of transmitting a communication signal. The communication unit 404 is specifically configured to: communicate with the charging case via the earphone control module after the voltage at the positive connector decreases.

[0173] In one possible implementation, the first request includes a first voltage, and the current sourcing circuit has a first input terminal and a first output terminal; the current unit 402 is specifically configured to: apply the first voltage to the current sourcing circuit through the first input terminal according to the first request; after the first voltage is applied to the current sourcing circuit, the current sourcing circuit is turned on and applies the target current to the negative connector through the first output terminal.

[0174] In one possible implementation, the first request includes a first voltage, and the current-pull circuit includes a current-limiting resistor and a switching circuit connected in series, wherein the current-limiting resistor is used to determine the magnitude of the target current, and the switching circuit is used to control the conduction or disconnection of the current-pull circuit; the current unit 402 is specifically used to: apply a first voltage to the switching circuit according to the first request; and after applying the first voltage to the switching circuit, control the current-pull circuit to conduct and apply the target current to the negative connector.

[0175] In one possible implementation, the wireless earphone further includes a charging module, which includes a charging input terminal and a charging output terminal; the device further includes a charging unit 405, configured to receive the charging signal transmitted through the positive connector via the charging input terminal, and transmit the charging signal to a device coupled to the charging output terminal.

[0176] In one possible implementation, the current-pull circuit further includes a second input terminal coupled to either the charging input terminal or the charging output terminal.

[0177] It should be noted that the above division of multiple units is merely a logical division based on function and does not constitute a limitation on the specific structure of the headphone charging communication device 100. In specific implementations, some functional modules may be subdivided into more smaller functional modules, and some functional modules may be combined into a single functional module. However, regardless of whether these functional modules are subdivided or combined, the general flow executed by the headphone charging communication device 100 during headphone charging communication remains the same. Typically, each unit corresponds to its own program code (or program instructions). When these program codes are run on the relevant hardware device, they cause the unit to execute the corresponding flow to achieve the corresponding function. In addition, the function of each unit can also be implemented through relevant hardware.

[0178] It should also be noted that the functions of each functional unit in the headphone charging communication device 100 described in this application embodiment are as described above. Figure 17 In the embodiment of the headphone charging communication method described above, the wireless headphone 10 is used to support and execute... Figure 17 The relevant descriptions of steps S301-S302 and steps S305-S306 in the method flow shown are not repeated here.

[0179] Based on the aforementioned headphone charging communication system architecture, this application provides a headphone charging communication device applied to the aforementioned headphone charging communication system architecture. Please refer to [link to relevant documentation]. Figure 19 , Figure 19 This is a schematic diagram of another headphone charging communication device provided in an embodiment of this application. The headphone charging communication device 200 is applied to a charging case for wireless headphones. The positive and negative connectors of the wireless headphones are connected to the positive and negative terminals of the charging case, respectively. The charging case is compatible with the wireless headphones. Figure 19 As shown, the headphone charging communication device 200 may include a second monitoring unit 411, a control unit 412, a receiving unit 413, and may further include a voltage unit 414. Wherein,

[0180] The second monitoring unit 411 is used to monitor the magnitude of the current at the negative connector when transmitting a charging signal to the wireless earphone through the positive connector.

[0181] The control unit 412 is configured to: control the second switching module to adjust the positive connector from the state of transmitting charging signals to the state of transmitting communication signals when the magnitude of the current signal at the negative connector changes.

[0182] The receiving unit 413 is used to receive communication signals sent by the wireless earphone.

[0183] In one possible implementation, the magnitude of the current at the negative connector increases when the wireless earphone applies a target current to the negative connector.

[0184] In one possible implementation, the charging case includes: a detection resistor and a monitoring circuit connected in series with the negative terminal, wherein the voltage across the detection resistor increases when the wireless earphone applies a target current to the negative terminal connector; and a second monitoring unit 411 specifically configured to monitor the magnitude of the voltage across the detection resistor.

[0185] In one possible implementation, the monitoring circuit further includes a monitoring circuit comprising a third input terminal, a fourth input terminal, and a second output terminal, wherein the third input terminal and the fourth input terminal are respectively connected to the two ends of the detection resistor, and the second output terminal is connected to the charging box control terminal; the device further includes: a voltage unit 414, used to: receive a second voltage input by the monitoring circuit through the second output terminal via the charging box control module after a change in the magnitude of the current at the negative connector; and a control unit 412, specifically used to: control the second switching module to adjust the positive connector from the state of transmitting charging signals to the state of transmitting communication signals according to the second voltage.

[0186] In one possible implementation, the charging box further includes a charging box charging module, the charging box charging module including a charging box charging output terminal; the method further includes: transmitting the charging signal through a device coupled to the charging box charging module and the charging box charging output terminal.

[0187] It should be noted that the above division of multiple units is merely a logical division based on function and does not constitute a limitation on the specific structure of the headphone charging communication device 200. In specific implementations, some functional modules may be subdivided into more smaller functional modules, and some functional modules may be combined into a single functional module. However, regardless of whether these functional modules are subdivided or combined, the general flow executed by the headphone charging communication device 200 during headphone charging communication remains the same. Typically, each unit corresponds to its own program code (or program instructions). When these program codes are run on the relevant hardware device, they cause the unit to execute the corresponding flow to achieve the corresponding function. In addition, the function of each unit can also be implemented through relevant hardware.

[0188] It should also be noted that the functions of each functional unit in the headphone charging communication device 200 described in this application embodiment are as described above. Figure 17 In the embodiment of the headphone charging communication method described above, the charging case 20 is used to support and execute the communication method. Figure 17The relevant descriptions of steps S303-S304 and S307 in the method flow shown are not repeated here.

[0189] like Figure 20 As shown, Figure 20 This is a schematic diagram of another headphone charging and communication device provided in this application embodiment. The device 50 includes at least one processor 501, at least one memory 502, and at least one communication interface 503. In addition, the device may also include general components such as antennas, which will not be described in detail here.

[0190] Processor 501 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits used to control the execution of programs in the above scheme.

[0191] Communication interface 503 is used to communicate with other devices or communication networks, such as Ethernet, Radio Access Network (RAN), core network, Wireless Local Area Networks (WLAN), etc.

[0192] Memory 502 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited thereto. Memory may exist independently and be connected to the processor via a bus. Memory may also be integrated with the processor.

[0193] The memory 502 stores the application code for executing the above scheme, and its execution is controlled by the processor 501. The processor 501 executes the application code stored in the memory 502.

[0194] The code stored in memory 502 can execute the above. Figure 17The provided wireless earphone 10 is used to support and execute method flow steps S301-S302, and steps S305-S306, for example:

[0195] When the wireless earphone receives the charging signal transmitted by the charging case through the positive connector, the earphone control module generates a first request, which is used to request communication with the charging case.

[0196] According to the first request, a target current is applied to the negative connector through a current-pull circuit. The target current is used by the charging box to control the positive connector to switch from transmitting a charging signal to transmitting a communication signal.

[0197] The first switching module monitors whether the positive connector has been adjusted to the state of transmitting communication signals.

[0198] When the positive connector is adjusted to the state of transmitting communication signals, it communicates with the charging case through the earphone control module.

[0199] It should be noted that the functions of each functional unit in the headphone charging and communication device described in the embodiments of this application can be found in the above description. Figure 17 In the embodiments described above, the wireless earphone 10 is used to support and perform... Figure 17 The relevant descriptions of steps S301-S302 and steps S305-S306 in the method flow shown are not repeated here.

[0200] like Figure 21 As shown, Figure 21 This is a schematic diagram of another headphone charging and communication device provided in this application embodiment. The device 60 includes at least one processor 601, at least one memory 602, and at least one communication interface 603. In addition, the device may also include general components such as antennas, which will not be described in detail here.

[0201] Processor 601 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits used to control the execution of programs in the above scheme.

[0202] Communication interface 603 is used to communicate with other devices or communication networks, such as Ethernet, Radio Access Network (RAN), core network, Wireless Local Area Networks (WLAN), etc.

[0203] Memory 602 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited thereto. Memory may exist independently and be connected to the processor via a bus. Memory may also be integrated with the processor.

[0204] The memory 602 stores the application code for executing the above scheme, and its execution is controlled by the processor 601. The processor 601 executes the application code stored in the memory 602.

[0205] The code stored in memory 602 can execute the above. Figure 17 The provided charging case 20 can be used to support and execute method flow steps S303-S304 and step S307, for example:

[0206] When the charging case control module transmits a charging signal to the wireless earphones through the positive connector, it monitors the magnitude of the current at the negative connector.

[0207] When the magnitude of the current signal at the negative connector changes, the second switching module controls the positive connector to switch from transmitting a charging signal to transmitting a communication signal.

[0208] Receive communication signals sent by the wireless earphone.

[0209] It should be noted that the functions of each functional unit in the headphone charging and communication device described in the embodiments of this application can be found in the above description. Figure 17 The charging box 20 can be used to support and perform Figure 17 The method flow steps S303-S304 and S307 shown are described in detail here.

[0210] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0211] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0212] In the several embodiments provided in this application, it should be understood that the disclosed apparatus can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of the units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical or other forms.

[0213] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0214] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0215] If the integrated units described above are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which can be a personal computer, server, or network device, specifically a processor in the computer device) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium may include various media capable of storing program code, such as a USB flash drive, portable hard drive, magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM).

[0216] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A wireless earphone, characterized in that, The positive and negative connectors of the wireless earbuds are respectively connected to the positive and negative terminals of the charging case; the wireless earbuds include: The earphone control module is used to generate a first request when the wireless earphone receives a charging signal transmitted by the charging case through the positive connector, wherein the first request is used to request communication with the charging case; A current-pull circuit is used to apply a target current to the negative connector according to the first request. The target current is used by the charging box to control the positive connector to switch from transmitting a charging signal to transmitting a communication signal. The first switching module is used to monitor whether the positive connector is adjusted to the state of transmitting communication signals; wherein, the first switching module is specifically used to: determine whether the positive connector is adjusted to the state of transmitting communication signals by monitoring the magnitude of the voltage at the positive connector; The earphone control module is also used to communicate with the charging case when the positive connector is adjusted to the state of transmitting communication signals.

2. The earphone according to claim 1, characterized in that, The voltage of the positive connector is greater when the charging signal is being transmitted than when the communication signal is being transmitted. The earphone control module is specifically used to communicate with the charging case after the voltage at the positive connector decreases.

3. The earphone according to claim 1, characterized in that, The first request includes a first voltage, and the current-pull circuit includes a first input terminal and a first output terminal; The headphone control module is further configured to: apply the first voltage to the current-pull circuit through the first input terminal; The current-pull circuit is specifically used to: after the headphone control module applies the first voltage through the first input terminal, the current-pull circuit is turned on and outputs the target current to the negative connector through the first output terminal.

4. The earphone according to claim 1, characterized in that, The first request includes a first voltage, and the current-pull circuit includes a current-limiting resistor and a switching circuit connected in series, wherein the current-limiting resistor is used to determine the magnitude of the target current, and the switching circuit is used to control the conduction or disconnection of the current-pull circuit; The headphone control module is specifically used to: apply the first voltage to the switching circuit; The current-pull circuit is specifically used to: after applying a first voltage to the switching circuit, control the current-pull circuit to conduct and output the target current to the negative connector.

5. The headphones according to any one of claims 1-4, characterized in that, The wireless earphones also include a charging module, which includes a charging input terminal and a charging output terminal. The charging module is used to receive the charging signal transmitted by the positive connector through the charging input terminal, and to transmit the charging signal to the charging box coupled to the charging output terminal.

6. The earphone according to claim 5, characterized in that, The current-pull circuit also includes a second input terminal, which is coupled to the charging input terminal or the charging output terminal.

7. A charging case for wireless earphones, characterized in that, The positive and negative terminals of the charging case are connected to the positive and negative connectors of the wireless earphones, respectively; the charging case includes: The charging case control module is used to monitor the magnitude of the current at the negative connector when transmitting a charging signal to the wireless earphone through the positive connector; When the magnitude of the current at the negative connector changes, the second switching module controls the positive connector to switch from transmitting a charging signal to transmitting a communication signal; wherein, when the wireless earphone applies a target current to the negative connector, the magnitude of the current at the negative connector increases; Receive communication signals sent by the wireless earphone.

8. The charging case according to claim 7, characterized in that, The charging case also includes a detection resistor connected in series with the negative terminal, wherein when the wireless earphone applies a target current to the negative terminal connector, the voltage across the detection resistor increases. The charging box control module is specifically used to monitor the voltage across the detection resistor.

9. The charging case according to claim 8, characterized in that, The charging box also includes a monitoring circuit, which includes a third input terminal, a fourth input terminal, and a second output terminal. The third input terminal and the fourth input terminal are respectively connected to the two ends of the detection resistor, and the second output terminal is connected to the charging box control terminal. The charging box control module is specifically used to: receive a second voltage input by the monitoring circuit through the second output terminal after the magnitude of the current at the negative connector changes; Based on the second voltage, the second switching module is controlled to adjust the positive connector from the state of transmitting charging signals to the state of transmitting communication signals.

10. A communication method between wireless earphones and a charging case, characterized in that, The method is applied to wireless earphones, wherein the positive and negative connectors of the wireless earphones are respectively connected to the positive and negative terminals of the charging case; the method includes: When the wireless earphone receives the charging signal transmitted by the charging case through the positive connector, the earphone control module generates a first request, which is used to request communication with the charging case. According to the first request, a target current is applied to the negative connector through a current-pull circuit. The target current is used by the charging box to control the positive connector to switch from transmitting a charging signal to transmitting a communication signal. The first switching module monitors whether the positive connector has been adjusted to the state of transmitting communication signals; the monitoring of whether the positive connector has been adjusted to the state of transmitting communication signals by the first switching module includes: determining whether the positive connector has been adjusted to the state of transmitting communication signals by monitoring the magnitude of the voltage at the positive connector by the first switching module. When the positive connector is adjusted to the state of transmitting communication signals, it communicates with the charging case through the earphone control module.

11. The method according to claim 10, characterized in that, The voltage of the positive connector is greater when the charging signal is being transmitted than when the communication signal is being transmitted. The step of communicating with the charging case via the earphone control module when the positive connector is adjusted to the state of transmitting the communication signal includes: After the voltage at the positive connector decreases, the headphone control module communicates with the charging case.

12. The method according to claim 10, characterized in that, The first request includes a first voltage, and the current-pull circuit has a first input terminal and a first output terminal; Applying a target current to the negative connector via a current-pull circuit according to the first request includes: According to the first request, the first voltage is applied to the current-pull circuit through the first input terminal; After the first voltage is applied to the current sourcing circuit, the current sourcing circuit is turned on and the target current is applied to the negative connector through the first output terminal.

13. The method according to claim 10, characterized in that, The first request includes a first voltage, and the current-pull circuit includes a current-limiting resistor and a switching circuit connected in series, wherein the current-limiting resistor is used to determine the magnitude of the target current, and the switching circuit is used to control the conduction or disconnection of the current-pull circuit; Applying a target current to the negative connector via a current-pull circuit according to the first request includes: According to the first request, a first voltage is applied to the switching circuit; After applying a first voltage to the switching circuit, the current-pull circuit is turned on and the target current is applied to the negative connector.

14. The method according to any one of claims 10-13, characterized in that, The wireless earphones also include a charging module, which includes a charging input terminal and a charging output terminal. The method further includes: receiving the charging signal transmitted by the positive connector through the charging input terminal, and transmitting the charging signal to the charging box coupled to the charging output terminal.

15. The method according to claim 14, characterized in that, The current-pull circuit also includes a second input terminal, which is coupled to the charging input terminal or the charging output terminal.

16. A communication method between wireless earphones and a charging case, characterized in that, The method is applied to the charging case, wherein the positive and negative terminals of the charging case are respectively connected to the positive and negative connectors of the wireless earphones; the method includes: When the charging case control module transmits a charging signal to the wireless earphones through the positive connector, it monitors the magnitude of the current at the negative connector. When the magnitude of the current signal at the negative connector changes, the second switching module controls the positive connector to switch from transmitting a charging signal to transmitting a communication signal; wherein, when the wireless earphone applies a target current to the negative connector, the magnitude of the current at the negative connector increases. Receive communication signals sent by the wireless earphone.

17. The method according to claim 16, characterized in that, The charging case includes a detection resistor connected in series with the negative terminal, wherein the voltage across the detection resistor increases when the wireless earphone applies a target current to the negative terminal connector; The monitoring of the current at the negative connector includes: Monitor the voltage across the detection resistor.

18. The method according to claim 17, characterized in that, The charging box also includes a monitoring circuit, which includes a third input terminal, a fourth input terminal, and a second output terminal. The third input terminal and the fourth input terminal are respectively connected to the two ends of the detection resistor, and the second output terminal is connected to the charging box control terminal. The method further includes: after the magnitude of the current at the negative connector changes, receiving the second voltage input by the monitoring circuit through the second output terminal via the charging box control module; The control second switching module adjusts the positive connector from the state of transmitting charging signals to the state of transmitting communication signals, including: Based on the second voltage, the second switching module is controlled to adjust the positive connector from the state of transmitting charging signals to the state of transmitting communication signals.

19. A headphone charging and communication device, characterized in that, The headphone charging communication device includes a wireless headphone and a charging case for the wireless headphone. The wireless headphone is the wireless headphone according to any one of claims 1 to 6, and the charging case is the charging case according to any one of claims 7 to 9. The positive connector and negative connector of the wireless headphone are respectively connected to the positive and negative terminals of the charging case.

20. A computer program product, characterized in that, The computer program product includes instructions that, when executed by a computer, cause the computer product to perform the method as described in any one of claims 10-15 or 16-18.

21. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the method described in any one of claims 10-15 or 16-18.

Images