Earphone charging box integrated with bluetooth adapter, external device and application method

Abstract

The application belongs to the technical field of wireless earphones, and discloses an earphone charging box integrated with a Bluetooth adapter and an application method. The earphone charging box comprises a power supply component, a control component and a Bluetooth integrated interface, wherein the control component comprises a Bluetooth communication module; the power supply component is connected with the control component and the Bluetooth integrated interface, and is used for charging the wireless earphone and supplying power to the control component; the Bluetooth communication module is used for establishing a Bluetooth connection with the wireless earphone and interacting audio data and control instructions; the Bluetooth integrated interface is connected with the control component, and is used for establishing a wired connection with an external device; when the Bluetooth integrated interface is connected with the external device, the control component transmits audio information and control instructions of the external device to the wireless earphone through the Bluetooth communication module. The earphone charging box can connect the wireless earphone to the external device without a built-in Bluetooth module, and improves the adaptability and convenience of the wireless earphone.

Description

Technical Field

[0001] This application relates to the field of wireless headphone technology, and more particularly to a headphone charging case with an integrated Bluetooth adapter, an external device, and an application method. Background Technology

[0002] With social development and progress, the number of users of wireless Bluetooth headsets is increasing, bringing convenience to users' lives.

[0003] In the existing field of wireless Bluetooth headphones (also known as the field of wireless stereo headphones technology, TWS), wireless Bluetooth headphones include earphones and charging cases. The charging case mainly undertakes two core functions: first, to provide power to the earphones, and second, to act as a communication relay station between the earphones to ensure synchronization and coordination between the two ears.

[0004] Currently, although the charging case mentioned above can connect to some terminals, there are still certain limitations in the connection, especially with external devices that do not have a built-in Bluetooth module, such as PCs without a built-in Bluetooth module. The charging case cannot be connected to a PC without a built-in Bluetooth module through the traditional Bluetooth headset connection method, that is, it is impossible to connect wireless headsets to PCs and other devices, resulting in poor compatibility and convenience of the wireless Bluetooth headset. Summary of the Invention

[0005] The purpose of this application is to provide an earphone charging case with an integrated Bluetooth adapter, an external device, and an application method, with the main objective of improving the compatibility and convenience of wireless earphones.

[0006] To address the aforementioned technical issues, this application provides an earphone charging case with an integrated Bluetooth adapter. The earphone charging case with an integrated Bluetooth adapter includes: a power supply component, a control component, and a Bluetooth integrated interface. The control component includes a Bluetooth communication module.

[0007] The power supply component is connected to the control component and the Bluetooth integrated interface, and is used to charge at least one wireless earphone and to power the control component.

[0008] The Bluetooth communication module is used to establish a Bluetooth connection with at least one of the wireless earphones and exchange audio data and control commands.

[0009] The Bluetooth integrated interface is connected to the control component and is used to establish a wired connection with external devices;

[0010] When the Bluetooth integrated interface is connected to the external device, the control component transmits the audio information and control commands of the external device to the wireless headset via the Bluetooth communication module.

[0011] Furthermore, the power supply component also includes a battery charging circuit, the charging interface of which shares a single interface with the Bluetooth integrated interface.

[0012] Furthermore, the charging interface of the battery charging circuit and the interface of the Bluetooth integrated interface include a Type-C interface, a Lightning interface, and a Micro-B interface.

[0013] Furthermore, the control component also includes a Bluetooth acquisition module, which is connected to the Bluetooth communication module. The Bluetooth acquisition module is used to acquire the target Bluetooth address of the wireless earphone and transmit the target Bluetooth address to the Bluetooth communication module. The Bluetooth communication module establishes a connection between the earphone charging case and the wireless earphone based on the target Bluetooth address.

[0014] Furthermore, the control component also includes a format conversion module, which is connected to the Bluetooth communication module and is used to convert the audio data of the external device into a Bluetooth audio format supported by the wireless headphones, and transmit the converted audio data to the wireless headphones through the Bluetooth communication module.

[0015] Furthermore, the earphone charging case with integrated Bluetooth adapter also includes a user interaction unit, which is connected to the control component in the form of a circuit.

[0016] The user interaction unit detects user input actions and generates corresponding control commands based on the actions, and controls the playback behavior of the wireless headphones according to the control commands.

[0017] Furthermore, the user interaction unit includes at least one of physical buttons or capacitive touch buttons, and the action includes pressing the physical button or touching the capacitive touch button.

[0018] Furthermore, the control commands include at least one of the following:

[0019] Adjust volume, switch to previous track, switch to next track, play, pause.

[0020] Furthermore, the user interaction unit also includes a speech recognition module;

[0021] The speech recognition module identifies the user's intent information and generates corresponding control commands based on the intent information.

[0022] This application also provides an application method for an earphone charging case with an integrated Bluetooth adapter, the method comprising:

[0023] S501. Detect whether the headphone charging case with integrated Bluetooth adapter is properly connected to at least one wireless earphone via Bluetooth communication protocol.

[0024] S502. Detect whether the earphone charging case is properly connected to the external device via a preset connection cable;

[0025] S503. When the earphone charging case is normally connected to at least one of the wireless earphones and the earphone charging case is normally connected to the external device, an audio playback request initiated by the external device is received, and the audio data of the audio playback request is converted into target audio data that supports the Bluetooth protocol.

[0026] S504. Play the target audio data through the wireless headphones.

[0027] Compared with the prior art, this application has the following main advantages:

[0028] The earphone charging case with integrated Bluetooth adapter includes a power component, a control component, and a Bluetooth integrated interface. The power component includes a power supply module and a wireless earphone charging circuit. The control component includes a Bluetooth communication module and a Bluetooth adapter module. The power component is used to charge at least one wireless earphone and power the control component. The Bluetooth communication module is used to establish a Bluetooth connection with the wireless earphone and exchange audio data and control commands. The Bluetooth integrated interface is used to establish a wired connection with an external device. When the Bluetooth integrated interface is connected to the external device, the control component transmits the audio information and control commands of the external device to the wireless earphone through the Bluetooth communication module. This enables the wireless earphone to connect even to external devices without a built-in Bluetooth module, improving the compatibility and convenience of the wireless earphone. Attached Figure Description

[0029] To more clearly illustrate the solutions in this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of an earphone charging case with an integrated Bluetooth adapter as described in one embodiment of this application;

[0031] Figure 2 This is a schematic diagram of the power supply assembly 100 described in one embodiment of this application;

[0032] Figure 3 This is a schematic diagram of the control component 200 described in one embodiment of this application;

[0033] Figure 4 This is a schematic diagram illustrating the application method of an earphone charging case integrating a Bluetooth adapter according to an embodiment of this application. Detailed Implementation

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application, are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0035] 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.

[0036] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0037] Please refer to Figure 1 This is a schematic diagram of an earphone charging case with an integrated Bluetooth adapter according to an embodiment of this application.

[0038] like Figure 1 As illustrated, the earphone charging case with integrated Bluetooth adapter includes: a power component 100, a control component 200, and a Bluetooth integrated interface 300; the control component 200 includes a Bluetooth communication module 201.

[0039] The Bluetooth communication module 201 supports the standard Bluetooth protocol, audio remote control configuration file, and audio distribution configuration file.

[0040] The aforementioned standard Bluetooth protocol is the specification followed by wireless headphones for communication and data transmission. Connecting Bluetooth devices via the standard Bluetooth protocol enables wireless Bluetooth connectivity. The aforementioned Audio Remote Control Profile (AVRCP) is a feature used for remotely controlling streaming media, including pause, stop, start, replay, and volume control. For example, after pairing wireless headphones with a computer, the player can be remotely controlled to skip tracks, adjust volume, pause, etc., achieving multi-functional control of streaming media and improving the flexibility and practicality of wireless headphones. The aforementioned Audio Distribution Profile (A2DP) is used to distribute high-quality audio content in mono or stereo on the ACL channel. By compressing audio data in an appropriate format, it improves the efficiency of using limited bandwidth and supports transmitting audio content from stereo to wireless headphones. The aforementioned standard Bluetooth protocol, Audio Remote Control Profile, and Audio Distribution Profile together form the foundation of Bluetooth audio transmission and control, achieving efficient and boundary-based audio transmission and control functions.

[0041] The power supply component 100 is connected to the control component 200 and the Bluetooth integrated interface 300, and is used to charge at least one wireless earphone and to supply power to the control component 200.

[0042] The Bluetooth communication module 201 is used to establish a Bluetooth connection with at least one of the wireless earphones and exchange audio data and control commands.

[0043] The Bluetooth integrated interface 300 is connected to the control component 200 and is used to establish a wired connection with external devices;

[0044] When the Bluetooth integrated interface 300 is connected to the external device, the control component 200 transmits the audio information and control commands of the external device to the wireless headset through the Bluetooth communication module 201.

[0045] In this embodiment, the power supply component 100, the control component 200, and the Bluetooth integrated interface 300 are interconnected in the form of a circuit; the Bluetooth communication module 201 is used to establish a Bluetooth connection with at least one of the wireless earphones and exchange audio data and control commands; the Bluetooth integrated interface 300 is used to establish a wired connection with an external device; when the Bluetooth integrated interface 300 is connected to the external device, the control component 200 transmits the audio information and control commands of the external device to the wireless earphone through the Bluetooth communication module 201.

[0046] In one feasible example A, a user uses a computer without built-in Bluetooth and connects the computer's USB or Type-C port to the headphone charging case with an integrated Bluetooth adapter via a data cable. The user wears the wireless headphones in the charging case and plays music on the computer. The audio signal corresponding to the music is converted into a Bluetooth audio format supported by the wireless headphones and transmitted to the wireless headphones for playback via the Bluetooth communication module in the control component of the headphone charging case.

[0047] In this embodiment, when the Bluetooth integrated interface 300 in the headphone charging case with the integrated Bluetooth adapter is connected to an external device (such as a computer without Bluetooth) via a connecting cable (such as a data cable), the audio signal played by the external device can be converted into a Bluetooth audio format supported by the wireless headphones, and the audio signal of the Bluetooth audio format can be played through the wireless headphones. This enables external devices without built-in Bluetooth to play audio through the wireless headphones, improving the convenience, versatility, and flexibility of the wireless headphones, thereby enhancing the user experience and reducing the user's operating costs.

[0048] Please refer to Figure 2 This is a schematic diagram of the power supply component 100 described in one embodiment of this application.

[0049] like Figure 2 As illustrated, the power supply assembly 100 includes a power supply module 101, a wireless earphone charging circuit 102, at least one battery 103, and a battery charging circuit 104. The power supply module 101 supplies power to the control assembly 200, and the wireless earphone charging circuit 102 charges at least one wireless earphone. The battery 103 is connected to the power supply module 101 and the wireless earphone charging circuit 102, and is used to store electrical energy and provide power to the power supply module 101 and the wireless earphone charging circuit 102. The battery charging circuit 104 is connected to the battery 103 and is used to charge the battery 103.

[0050] The wireless earphone charging circuit 102 can charge two wireless earphones simultaneously or charge one wireless earphone, wherein the one wireless earphone is not limited to the left or right earphone; the battery 103 can be one or more; the charging interface of the battery charging circuit 104 shares a single interface with the Bluetooth integrated interface 300, the interface including but not limited to Type-C interface, Lightning interface, Micro-B interface, etc., preferably using Type-C interface, the Type-C interface supports reversible insertion of the battery charging port to prevent reverse insertion during connection, extend the life of the interface and speed up the charging speed of the battery charging circuit 104.

[0051] Please refer to Figure 3 This is a schematic diagram of the control component 200 described in the embodiments of this application.

[0052] like Figure 3 As shown, the control component 200 also includes a Bluetooth acquisition module 202, which is connected to the Bluetooth communication module 201. The Bluetooth acquisition module 202 is used to acquire the Bluetooth address of the wireless headset and transmit the Bluetooth address as the target Bluetooth address to the Bluetooth communication module 201. The Bluetooth communication module 201 establishes a connection with the wireless headset based on the target Bluetooth address.

[0053] The Bluetooth acquisition module 202 first starts the Bluetooth scanning function. During the scanning process, the Bluetooth acquisition module 202 can detect and identify all detected Bluetooth addresses, and match the target Bluetooth address according to the unique identifier of the wireless earphone. The target Bluetooth address is then transmitted to the Bluetooth communication module 201, and the Bluetooth communication module 201 establishes a connection with the wireless earphone based on the target Bluetooth address.

[0054] In one embodiment, the control component 200 further includes a format conversion module 203, which is connected to the Bluetooth communication module 201 and is used to convert the audio data of the external device into a Bluetooth audio format supported by the wireless headphones, and transmit the converted audio data to the wireless headphones through the Bluetooth communication module 201.

[0055] The Bluetooth communication module 201 receives raw audio data from an external device. The raw audio includes various formats such as WAV, MP3, AAC, and FLAC. After receiving the raw audio data from the external device, the format of the raw audio data needs to be identified. The raw audio data is then transmitted to the format conversion module 203 via the Bluetooth communication module 201. The format conversion module 203 parses the raw audio data according to its format using a corresponding method. For example, it decodes the raw audio data into an uncompressed PCM (Pulse Code Modulation) audio stream or other intermediate formats that can be converted to Bluetooth audio formats. Subsequently, the decoded audio data is converted into Bluetooth audio formats, such as SBC (Simple Subband Coded) or AAC (Advanced Audio Coded). The conversion process includes, but is not limited to, resampling and encoding into the data packet format specified by the Bluetooth protocol. After converting the raw audio data into Bluetooth audio formats, the converted audio data is transmitted to the Bluetooth communication module 201, and the Bluetooth communication module 201 performs a communication task, transmitting the converted Bluetooth audio data to the wireless headphones for playback in real time.

[0056] In this embodiment, by converting the raw audio data of the external device as described above, it is possible to process raw audio data in multiple formats, thereby improving the compatibility of raw audio formats and enhancing the versatility of wireless headphones.

[0057] In one embodiment, the earphone charging case with integrated Bluetooth adapter further includes a user interaction unit 400, which is connected to the control component 200 in the form of a circuit.

[0058] The user interaction unit 400 detects user input actions and generates corresponding control commands based on the actions, and controls the playback behavior of the wireless headphones according to the control commands.

[0059] In another embodiment, the user interaction unit 400 includes at least one of a physical button or a capacitive touch button, and the action includes pressing the physical button or touching the capacitive touch button.

[0060] In another embodiment, the control command includes at least one of the following:

[0061] Adjust volume, switch to previous track, switch to next track, play, pause.

[0062] In this embodiment, the earphone charging case with integrated Bluetooth adapter also includes a user interaction unit 400. The user interaction unit 400 is connected to the control component 200 in the form of a circuit, ensuring the efficiency and stability of signal transmission. The user interaction unit 400 includes at least one of physical buttons or capacitive touch buttons. When the user performs a corresponding action on the user interaction unit, the user interaction unit 400 identifies the user's intention corresponding to the action and generates a corresponding control command based on the user's intention and a preset mapping rule. The control command exists in the form of a digital signal and contains all the information required to perform a specific operation, such as adjusting the volume, switching to the previous track, switching to the next track, playing, pausing, etc. The playback behavior of the wireless earphone is controlled according to the control command.

[0063] In a feasible example, when users want to play music from the wireless earbuds, they simply click the play / pause button on the earbud charging case. To skip to the next track, they simply click another designated button or swipe the touch panel. To adjust the volume, users can long-press the volume up or volume down button.

[0064] These control commands are transmitted to the control component 200 via circuitry, and the control component 200 then sends these commands to the wireless headphones via the Bluetooth communication module, thereby controlling the playback behavior of the wireless headphones.

[0065] In another embodiment, the user interaction unit 400 further includes a voice recognition module;

[0066] The speech recognition module identifies the user's intent information and generates corresponding control commands based on the intent information.

[0067] In this embodiment, the user interaction unit 400 includes not only physical buttons and capacitive touch buttons, but also a voice recognition module. Through this voice recognition module, users can generate control commands for the wireless headphones via voice commands, providing users with a convenient interactive experience and improving user experience.

[0068] The voice recognition module receives the user's voice signal through a built-in microphone array, performs preprocessing operations on the voice signal, including but not limited to voice enhancement and noise reduction, to obtain a preprocessed voice signal. Natural Language Processing (NIP) technology is used to recognize the user's voice commands to obtain the user's intent information. Based on the intent information and preset mapping rules, corresponding control commands are generated to control the playback behavior of the wireless headphones.

[0069] In this embodiment, the voice recognition module is also designed with a feedback mechanism. For example, when the user's command is successfully recognized and executed, the earphone charging case or wireless earphones may emit a slight vibration or sound to indicate that the operation was successful.

[0070] In this embodiment, by introducing a voice recognition module, the user interaction unit 400 provides users with a more natural and convenient interaction method. Users can now fully control the playback behavior of the wireless headphones simply through voice commands.

[0071] In this embodiment, the external device connected to the Bluetooth integrated interface 300 includes at least one connection cable interface, which is used to connect the connection cable interface to the Bluetooth integrated interface 300 via a connection cable.

[0072] Please refer to Figure 4 This application provides a method for using an earphone charging case with an integrated Bluetooth adapter, the method comprising:

[0073] Step S501: Check whether the earphone charging case and wireless earphones are properly connected via Bluetooth communication protocol;

[0074] Step S502: Detect whether the earphone charging case and the external device are normally connected via a preset connection cable;

[0075] Step S503: When the earphone charging case and the wireless earphones and the earphone case and the external device are all normally connected, receive the audio playback request initiated by the external device, and convert the audio data of the audio playback request into target audio data that supports the Bluetooth protocol.

[0076] Step S504: Play the target audio data through the wireless headphones.

[0077] In this embodiment, a broadcast signal is sent via the Bluetooth module inside the charging case. The wireless earbuds respond and return a connection request. After pairing, a stable Bluetooth connection is established. When the connection is successful, the indicator light on the charging case may illuminate with a specific color or flashing pattern to confirm the connection status between the wireless earbuds and the charging case to the user. Simultaneously, the charging case establishes a physical connection with an external device via a preset connection cable (such as USB-C, Lightning, etc.). The connection cable interface built into the charging case recognizes and responds to the connection request from the external device. Both parties establish a data communication channel through the physical interface and corresponding drivers. Once the wired connection is established, the external device (such as a computer) can... The charging case may be recognized as a new audio output device. Users need to select the charging case as the sound card option for wireless headphones in the audio settings of the external device. When the user initiates an audio playback request (such as playing music or video) on the external device, the request is received by the charging case. The Bluetooth communication module inside the charging case converts the received audio data into a target audio data format that supports the Bluetooth protocol to adapt to the playback requirements of the wireless headphones. The conversion process needs to be fast and efficient to reduce audio latency and ensure a smooth playback experience. The converted target audio data is transmitted to the wireless headphones in real time via Bluetooth connection. The headphones decode and play the data immediately after receiving it.

[0078] In this embodiment, the earphone charging case with integrated Bluetooth adapter enables wireless earphones to connect to external devices without built-in Bluetooth modules, improving the compatibility and convenience of wireless earphones.

[0079] When the technical solutions in the above embodiments are implemented using software, the computer instructions and / or data implementing the above embodiments can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any medium that facilitates the transmission of computer programs from one place to another. Storage media can be any available medium that a computer can store. For example, but not limited to, computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, 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. Furthermore, any connection can suitably be considered a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of the medium.

[0080] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. An earphone charging case with an integrated Bluetooth adapter, characterized in that, The earphone charging case with integrated Bluetooth adapter includes: a power component, a control component, and a Bluetooth integrated interface; the control component includes a Bluetooth communication module. The power supply component is connected to the control component and the Bluetooth integrated interface, and is used to charge at least one wireless earphone and to power the control component. The Bluetooth communication module is used to establish a Bluetooth connection with at least one of the wireless earphones and exchange audio data and control commands. The Bluetooth integrated interface is connected to the control component and is used to establish a wired connection with external devices; When the Bluetooth integrated interface is connected to the external device, the control component transmits the audio information and control commands of the external device to the wireless headset via the Bluetooth communication module.

2. The earphone charging case with an integrated Bluetooth adapter as described in claim 1, characterized in that, The power supply component also includes a battery charging circuit, the charging interface of which shares a single interface with the Bluetooth integrated interface.

3. The earphone charging case with an integrated Bluetooth adapter as described in claim 2, characterized in that, The charging interface of the battery charging circuit and the Bluetooth integrated interface include a Type-C interface, a Lightning interface, and a Micro-B interface.

4. The earphone charging case with an integrated Bluetooth adapter as described in claim 1, characterized in that, The control component further includes a Bluetooth acquisition module, which is connected to the Bluetooth communication module. The Bluetooth acquisition module is used to acquire the target Bluetooth address of the wireless earphone and transmit the target Bluetooth address to the Bluetooth communication module. The Bluetooth communication module establishes a connection between the earphone charging case and the wireless earphone based on the target Bluetooth address.

5. The earphone charging case with an integrated Bluetooth adapter as described in claim 1, characterized in that, The control component further includes a format conversion module, which is connected to the Bluetooth communication module and is used to convert the audio data of the external device into a Bluetooth audio format supported by the wireless headphones, and transmit the converted audio data to the wireless headphones through the Bluetooth communication module.

6. The earphone charging case with an integrated Bluetooth adapter as described in claim 1, characterized in that, The earphone charging case with integrated Bluetooth adapter also includes a user interaction unit, which is connected to the control component in the form of a circuit. The user interaction unit detects user input actions and generates corresponding control commands based on the actions, and controls the playback behavior of the wireless headphones according to the control commands.

7. The earphone charging case with an integrated Bluetooth adapter as described in claim 6, characterized in that, The user interaction unit includes at least one of physical buttons or capacitive touch buttons, and the action includes pressing the physical button or touching the capacitive touch button.

8. The earphone charging case with an integrated Bluetooth adapter as described in claim 6, characterized in that, The control commands include at least one of the following: Adjust volume, switch to previous track, switch to next track, play, pause.

9. The earphone charging case with an integrated Bluetooth adapter as described in claim 6, characterized in that, The user interaction unit also includes a speech recognition module; The speech recognition module identifies the user's intent information and generates corresponding control commands based on the intent information.

10. An application method of an earphone charging case integrating a Bluetooth adapter, characterized in that, The method includes: Test whether the earphone charging case with integrated Bluetooth adapter is properly connected to at least one wireless earphone via Bluetooth communication protocol; Check whether the earphone charging case is properly connected to the external device via a preset connection cable; When the earphone charging case is normally connected to at least one of the wireless earphones and the earphone charging case is normally connected to the external device, it receives an audio playback request initiated by the external device and converts the audio data of the audio playback request into target audio data that supports the Bluetooth protocol. The target audio data is played through the wireless headphones.

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