Earphone charging box, earphone equipment and playing system

Abstract

The invention discloses an earphone charging box, earphone equipment and a playing system. The earphone charging box comprises a processor, a first Bluetooth LE Audio module, a WiFi module and a charging module, the WiFi module is used for accessing a wireless communication network corresponding to intelligent equipment and receiving an audio signal transmitted by the intelligent equipment through the wireless communication network; the first Bluetooth LE Audio module is used for connecting an earphone corresponding to the earphone charging box and sending the audio signal to the earphone; and the charging module is used for storing electric energy and charging the earphone when the earphone is connected into the power supply port. According to the invention, the earphone can receive high-quality music and other audio signals from the intelligent device, so that the effect of playing the corresponding audio signals by the earphone can be improved.

Description

Technical Field

[0001] This application relates to the technical field of audio transmission, and particularly relates to a headphone charging case, a headphone device, and a playback system. Background Art

[0002] Bluetooth LE Audio (Low Energy Audio) is a new generation of Bluetooth audio standard launched by the Bluetooth Special Interest Group (Bluetooth SIG), aiming to improve the quality of audio transmission, reduce power consumption, and expand the application scenarios of Bluetooth audio. LE Audio is designed based on the Bluetooth Low Energy (BLE) architecture, introducing a number of new technologies and improvements, with the advantages of improving sound quality and reducing the power consumption of corresponding devices. However, for some smart devices such as mobile phones that do not support the Bluetooth LE Audio standard, it is difficult to transmit high-quality audio signals to playback devices such as true wireless headphones based on the Bluetooth LE Audio standard, which easily affects the corresponding audio playback effect. Summary of the Invention

[0003] In view of this, this application provides a headphone charging case, a headphone device, and a playback system, so that a mobile phone that does not support the Bluetooth LE Audio standard can transmit high-quality audio signals to the playback device, improving the corresponding audio playback effect.

[0004] This application provides a headphone charging case, which includes a processor, a first Bluetooth LE Audio module, a WiFi module, and a charging module;

[0005] The WiFi module is used to access the wireless communication network corresponding to the smart device and receive the audio signal transmitted by the smart device through the wireless communication network;

[0006] The first Bluetooth LE Audio module is used to connect to the headphones corresponding to the headphone charging case and send the audio signal to the headphones;

[0007] The charging module is used to store electrical energy and charge the headphones when the power supply port is connected to the headphones.

[0008] Optionally, the wireless communication network includes at least one of a WiFi direct network, a multimedia content transmission network based on the DLNA protocol, and an audio signal transmission network based on the Airplay protocol.

[0009] Optionally, the headphone charging case further includes a processor; the processor is respectively connected to the first Bluetooth LE Audio module, the WiFi module, and the charging module.

[0010] Optionally, the processor is configured to enable the first Bluetooth LE Audio module when a communication requirement of the smart device is recognized, and to control the first Bluetooth LE Audio module to enter a sleep state when no communication requirement of the smart device is recognized.

[0011] Optionally, the processor is configured to monitor the power level of the charging module, and to control the WiFi module and the first Bluetooth LE Audio module to enter a sleep state respectively when the power level is less than a power threshold.

[0012] Optionally, the processor is configured to obtain a quality factor for describing the communication quality between the first Bluetooth LE Audio module and the earphone, and to control the first Bluetooth LE Audio module to enter a sleep state when the quality factor exceeds a preset factor range.

[0013] Optionally, the quality factor includes at least one of signal strength indication, bit error rate, packet error rate, signal-to-noise ratio, and retransmission ratio.

[0014] This application also provides an earphone device, which includes any one of the above earphone charging cases and an earphone charged by the earphone charging case;

[0015] The earphone includes a second Bluetooth LE Audio module, which is used to connect to the first Bluetooth LE Audio module of the earphone charging case.

[0016] Optionally, the earphone further includes a charging port and a speaker; the charging port is used to connect to the power supply port of the earphone charging case when the earphone is placed in the earphone charging case, so that the earphone charging case charges the earphone; the speaker is used to play the audio signal received by the earphone.

[0017] This application also provides a playback system, which includes a smart device and any one of the above earphone devices; the smart device is used to transmit an audio signal to the earphone charging case through a wireless communication network.

[0018] Optionally, the smart device is further configured to identify whether it has Bluetooth LE Audio transmission capability. If it has Bluetooth LE Audio transmission capability, it establishes a Bluetooth LE Audio transmission channel with the earphone. If it does not have Bluetooth LE Audio transmission capability, it establishes a wireless communication network with the earphone charging case.

[0019] Optionally, the earphone charging case is further configured to establish a wireless communication network with the smart device when it recognizes that the smart device does not have Bluetooth LE Audio transmission capability.

[0020] Optionally, the earphone is further configured to establish a Bluetooth LE Audio transmission channel with the smart device when it recognizes that the smart device has the Bluetooth LE Audio transmission capability.

[0021] For the above-mentioned earphone charging case, earphone device and playback system of the present application, when the smart device does not support the Bluetooth LE Audio standard, the earphone charging case can build a wireless communication network with the corresponding smart device through the WiFi module. The data transmission rate of this wireless communication network is much higher than that of Bluetooth. Therefore, based on the WiFi module, the smart device can transmit high-quality audio signals to the earphone charging case. After receiving the audio signals, the earphone charging case can transmit the high-quality audio signals to the corresponding earphone through the first Bluetooth LE Audio module. Therefore, through the above path, the earphone can receive high-quality audio signals such as music from the smart device, thereby improving the effect of the earphone playing the corresponding audio signals. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 It is a schematic diagram of the charging case body of the earphone charging case according to an embodiment of the present application;

[0024] Figure 2 It is a partial structural schematic diagram of the earphone charging case according to an embodiment of the present application;

[0025] Figure 3a and Figure 3b It is a schematic diagram of the earphone device according to an embodiment of the present application;

[0026] Figure 4 It is a schematic diagram of the playback system structure according to an embodiment of the present application. Detailed Embodiments

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application. Without conflict, the following various embodiments and their technical features can be combined with each other.

[0028] In a first aspect of the present application, a headphone charging case is provided. The headphone charging case may include a charging case main body (which may also be referred to as a charging case housing, etc.) and structures such as a charging module disposed within the charging case main body. Optionally, the charging case main body may refer to Figure 1 as shown, for accommodating the corresponding headphones and charging the headphones placed therein. Among them, the headphones may support the Bluetooth LE Audio standard.

[0029] Specifically, referring to Figure 2 as shown, the structures disposed within the charging case main body of the headphone charging case may include a first Bluetooth LE Audio module 120, a WiFi module 130, a charging module 140, etc. Optionally, the headphone charging case may further include a control component, and the control component may include structures with control functions such as a processor 110 as shown in Figure 2 ; control components such as the processor 110 may be respectively connected to the first Bluetooth LE Audio module 120, the WiFi module 130, and the charging module 140.

[0030] The above control component may be used to respectively control the first Bluetooth LE Audio module 120, the WiFi module 130, and the charging module 140 to perform corresponding operations, so as to perform control operations according to the control requirements of the first Bluetooth LE Audio module 120, the WiFi module 130, and the charging module 140; for example, the control component may control components such as the WiFi module 130 and the first Bluetooth LE Audio module 120 to work or sleep, and for another example, the control component may transmit an audio signal to the first Bluetooth LE Audio module 120 after the WiFi module 130 receives the audio signal, etc.

[0031] The WiFi module 130 may support WiFi-related transmission protocols, be used to access the wireless communication network corresponding to the smart device, and receive the audio signal (which may also be referred to as audio data) transmitted by the smart device through the wireless communication network. Optionally, the WiFi module 130 may transmit the audio signal to the first Bluetooth LE Audio module 120 under the control of control components such as the processor 110, for example, the processor 110 transmits the audio signal from the WiFi module 130 to the first Bluetooth LE Audio module 120, etc.

[0032] The first Bluetooth LE Audio module 120 is a communication module that supports the Bluetooth LE Audio standard, and is used to connect the headphones corresponding to the headphone charging case and send the audio signal to the headphones; specifically, the first Bluetooth LE Audio module 120 connects to the Bluetooth LE Audio module of the headphones and sends the audio signal to its Bluetooth LE Audio module to improve the transmission quality.

[0033] The charging module 140 is used to store electrical energy and charge the earphone when the corresponding earphone is connected to the power supply port.

[0034] The above earphone charging case constructs a wireless communication network with the corresponding smart device through the WiFi module 130. The data transmission rate of this wireless communication network is much higher than that of Bluetooth. Therefore, based on the WiFi module 130, the smart device transmits an audio signal to the earphone charging case, and the earphone charging case receives the audio signal and transmits the audio signal to the corresponding earphone through the first Bluetooth LE Audio module 120. Through the above path, the earphone can receive high-quality audio signals such as music from the smart device.

[0035] Optionally, the earphone charging case may further include components such as a memory. These components cooperate with the processor 110, the first Bluetooth LE Audio module 120, the WiFi module 130, and the charging module 140 to enable the earphone charging case to transmit high-quality audio signals between the smart device and the corresponding earphone.

[0036] Specifically, the wireless communication network includes at least one of a WiFi direct connection network, a multimedia content transmission network based on the DLNA (DIGITAL LIVING NETWORK ALLIANCE) protocol, and an audio signal transmission network based on the Airplay protocol. The WiFi module 130 of the earphone charging case is directly connected to the smart device through WiFi, and the smart device can directly transmit the corresponding audio signal to the charging case. If the wireless communication network includes a multimedia content transmission network based on the DLNA protocol, the smart device transmits the audio signal to the earphone charging case through the DLNA protocol, and the earphone charging case receives the audio signal using the WiFi module 130 based on the DLNA protocol; when the smart device transmits the audio signal to the earphone charging case based on the DLNA protocol, the corresponding wireless communication network can be implemented through a router or a softAP (soft access point); if it is a softAP, the softAP can run on the earphone charging case or the smart device. If the wireless communication network includes an audio signal transmission network based on the Airplay protocol, the smart device transmits the audio signal to the earphone charging case based on Airplay, and the earphone charging case receives the audio signal using the WiFi module based on the Airplay protocol; when the smart device transmits the audio signal to the charging case based on the Airplay protocol, the corresponding wireless communication network can be implemented through a router or a softAP, and if it is a softAP, the softAP can run on the earphone charging case or the smart device.

[0037] In some embodiments, the earphone charging case may further include a processor 110, which is respectively connected to the first Bluetooth LE Audio module 120, the WiFi module 130, and the charging module 140. The processor 110 is used to control the first Bluetooth LE Audio module 120, the WiFi module 130, and the charging module 140 to perform corresponding operations respectively; optionally, the processor 110 may include one or more processors to perform control operations according to the control requirements of the first Bluetooth LE Audio module 120, the WiFi module 130, and the charging module 140. Specifically, the processor 110 can control components such as the WiFi module 130 and the first Bluetooth LE Audio module 120 to work or sleep. After the WiFi module 130 receives an audio signal, it transmits the audio signal to the first Bluetooth LE Audio module 120, and so on.

[0038] In some examples, the processor 110 is used to enable the first Bluetooth LE Audio module 120 when identifying the communication requirements of an external smart device, and control the first Bluetooth LE Audio module 120 to sleep when the communication requirements of the smart device are not identified, so as to avoid power consumption of the first Bluetooth LE Audio module 120 when audio signal transmission is not required, and reduce the power consumption of the first Bluetooth LE Audio module 120. Optionally, the processor 110 can periodically enable the first Bluetooth LE Audio module 120 and check the signal transceiver status of the first Bluetooth LE Audio module 120 when enabling the first Bluetooth LE Audio module 120 to identify the communication requirements of the smart device; for example, the processor 110 can determine that there is a communication requirement between the smart device and the first Bluetooth LE Audio module 120 when there is signal and / or data interaction between the first Bluetooth LE Audio module 120 and other smart devices, and determine that there is no current communication requirement between the smart device and the first Bluetooth LE Audio module 120 when there is no signal and / or data interaction between the first Bluetooth LE Audio module 120 and other smart devices.

[0039] Optionally, when there is a communication requirement between the first Bluetooth LE Audio module 120 and other smart devices, the WiFi module 130 is connected to the smart device through a wireless communication network, so that the earphone charging case and other smart devices can interact based on the wireless communication network. The first Bluetooth LE Audio module 120 is connected to the corresponding earphone to send corresponding audio signals to the corresponding earphone based on the Bluetooth LE Audio standard.

[0040] Optionally, the earphone charging case may further include a traditional Bluetooth module and / or a low-power Bluetooth module, which are used to connect to the corresponding Bluetooth modules of other smart devices to establish a Bluetooth transmission channel with other smart devices, enabling the earphone charging case to perform relevant information interaction with other smart devices through this Bluetooth transmission channel.

[0041] In some examples, the charging module 140 can store electrical energy when connected to an external power source, and when the corresponding earphone is connected, use the stored electrical energy to charge the earphone. The processor 110 is used to monitor the power of the charging module 140. When the power is less than the power threshold, it controls the WiFi module 130 and the first Bluetooth LE Audio module 120 to enter the sleep state respectively, so as to disconnect the communication connections between the earphone charging case and the smart device and the earphone respectively, making the WiFi module 130 and the first Bluetooth LE Audio module 120 stop consuming power when the power of the charging module 140 is less than the power threshold. Thus, the earphone charging case can reserve a certain amount of power to charge the corresponding earphone, better ensuring the battery life of the earphone. At this time, the smart device can transmit an audio signal to the corresponding earphone via Bluetooth, enabling the earphone to continue receiving and playing the corresponding audio signal to ensure the continuity of the audio signal played by the earphone, thereby ensuring the corresponding user experience. Optionally, the power threshold can be set according to factors such as the maximum power storage of the charging module 140, the power consumption characteristics of the first Bluetooth LE Audio module 120, the power consumption characteristics of the WiFi module 130, and / or the power consumption characteristics of the corresponding earphone. For example, the power threshold can be set to 20% of the maximum power storage of the charging module 140 or other equivalent values, or the power threshold can be set to a preset power value such as 1, etc.

[0042] Optionally, if the earphone charging case includes a traditional Bluetooth module and / or a low-power Bluetooth module, when the WiFi module 130 and the first Bluetooth LE Audio module 120 are in the sleep state, the earphone charging case can also perform relevant information interaction with the corresponding smart device through the traditional Bluetooth module and / or the low-power Bluetooth module, enabling the earphone charging case and the smart device to have a communication channel when the WiFi module 130 and the first Bluetooth LE Audio module 120 are in the sleep state and be able to interact with information such as corresponding statuses.

[0043] Optionally, the processor 110 is further configured to wake up the WiFi module 130 and the first Bluetooth LE Audio module 120 respectively when the power of the charging module 140 is greater than or equal to the power threshold, so as to restore the communication connections between the earphone charging case and the smart device and the earphone respectively, enable the earphone charging case to build a wireless communication network with the corresponding smart device through the WiFi module 130, receive the audio signal sent by the smart device through the wireless communication network, transmit the audio signal to the corresponding earphone through the first Bluetooth LE Audio module 120, and continue to receive high-quality audio signals from the smart device.

[0044] In some examples, the processor 110 is configured to obtain a quality factor for describing the communication quality between the first Bluetooth LE Audio module 120 and the earphone, and control the first Bluetooth LE Audio module 120 to enter the sleep state when the quality factor exceeds a preset factor range, so as to disconnect the connection between the earphone charging case and the earphone. In this embodiment, when the quality factor between the first Bluetooth LE Audio module 120 and the earphone exceeds the preset factor range, it indicates that it is difficult to perform high-quality audio signal transmission between the current earphone charging case and the earphone. Controlling the first Bluetooth LE Audio module 120 to enter the sleep state and disconnecting the connection between the earphone charging case and the earphone can enable the smart device to transmit the audio signal to the earphone through Bluetooth to ensure the smoothness of the audio signal received by the earphone.

[0045] Optionally, the processor 110 is further configured to, when the quality factor exceeds the preset factor range, indicate that it is difficult to perform high-quality audio transmission on the audio transmission channel between the earphone charging case and the smart device, and control the WiFi module 130 to enter the sleep state to disconnect the connection between the earphone charging case and the smart device, so that the smart device can transmit the audio signal to the earphone through Bluetooth.

[0046] Specifically, the quality factor includes at least one of Received Signal Strength Indicator (RSSI), Bit Error Rate (BER), Packet Error Rate (PER), Signal-to-Noise Ratio (SNR), and retransmission ratio; the corresponding preset factor range can be set according to factors such as the type of quality factor. For example, for a quality factor where a larger value indicates a better audio transmission channel quality, the preset factor range can be a range greater than or equal to a factor threshold. For a quality factor where a smaller value indicates a better audio transmission channel quality, the preset factor range can be a range less than or equal to a factor threshold, etc., so that the audio signal transmitted from the headphone charging case to the headphones can maintain high quality and low latency. Specifically, if the quality factor includes RSSI, the larger the RSSI, the better the corresponding connection quality. At this time, the preset factor range can be a range greater than or equal to an RSSI value; if the quality factor includes BER, the smaller the BER, the better the corresponding connection quality. At this time, the preset factor range can be a range less than or equal to a BER value; if the quality factor includes PER, the smaller the PER, the better the corresponding connection quality. At this time, the preset factor range can be a range less than or equal to a PER value; if the quality factor includes SNR, the larger the SNR, the better the corresponding connection quality. At this time, the preset factor range can be a range greater than or equal to an SNR value; if the quality factor includes the retransmission ratio, the smaller the retransmission ratio, the better the corresponding connection quality. At this time, the preset factor range can be a range less than or equal to a retransmission ratio value.

[0047] Optionally, the processor 110 can obtain the corresponding quality factor by means of real-time detection of the communication quality between the first Bluetooth LE Audio module 120 and the headphones. When there is a situation such as a large distance between the headphone charging case and the headphones, the quality factor between the first Bluetooth LE Audio module 120 and the headphones may exceed the preset factor range. At this time, the audio transmission channel between the headphone charging case and the smart device is not sufficient to provide high-quality audio transmission. At this time, the smart device transmits the audio signal to the headphones through Bluetooth, and the headphones can continue to play the audio signal, so that the user will not interrupt listening to the corresponding audio signal; in this way, even when there is a long distance between the headphone charging case and the headphones (for example, the user wears the headphones without carrying the charging case), or there is a strong occlusion between the headphone charging case and the headphones, the user can still smoothly listen to the audio signal from the smart device.

[0048] For the above-mentioned earphone charging case, when the smart device does not support the Bluetooth LE Audio standard, the earphone charging case can build a wireless communication network with the corresponding smart device through the WiFi module 130. The data transmission rate of this wireless communication network is much higher than that of Bluetooth. Therefore, based on the WiFi module 130, the smart device can transmit high-quality audio signals to the earphone charging case. After receiving the audio signals, the earphone charging case can transmit the high-quality audio signals to the corresponding earphones via the first Bluetooth LE Audio module 120. Thus, the earphones can receive high-quality audio signals such as music from the smart device through the above path, thereby improving the effect of playing the corresponding audio signals by the earphones.

[0049] The second aspect of the present application provides an earphone device. Referring to Figure 3a and Figure 3b as shown, the earphone device includes the earphone charging case described in any of the above embodiments and the earphones charged by the earphone charging case; Figure 3a shows the state of the earphones after being pulled out from the corresponding earphone charging case, Figure 3b shows the earphones placed in the corresponding earphone charging case.

[0050] Specifically, the earphones include a second Bluetooth LE Audio module (not shown in the figure). The second Bluetooth LE Audio module can be provided inside the corresponding earphones and support the Bluetooth LE Audio standard; a first Bluetooth LE Audio module for connecting to the earphone charging case to receive the audio signals sent by the earphone charging case through the first Bluetooth LE Audio module, so as to improve the quality of the received audio signals.

[0051] Optionally, the earphones further include a charging port. The charging port is used to connect to the power supply port of the earphone charging case when the earphones are placed in the earphone charging case, so that the earphone charging case can charge the earphones.

[0052] Optionally, the earphones further include a speaker, and the speaker is used to play the audio signals received by the earphones.

[0053] Optionally, the earphones further include a Bluetooth module, and the Bluetooth module is used to build a Bluetooth transmission channel with the smart device to receive the audio signals and / or related data sent by the smart device through the Bluetooth transmission channel when the first Bluetooth LE Audio module 120 of the earphone charging case is in a sleep state.

[0054] The above-mentioned earphone device includes the earphone charging case described in any of the above embodiments and has all the beneficial effects of the earphone charging case described in any of the above embodiments, which will not be elaborated here.

[0055] The third aspect of the present application provides a playback system. Referring to Figure 4As shown, the playback system includes a smart device 300 and the headphone device 200 described in any of the above embodiments; the headphone device 200 may include a headphone charging case 100 and headphones 210.

[0056] The headphone charging case 100 is provided with a WiFi module 130 that supports WiFi-related transmission protocols and a first Bluetooth LE Audio module 120 that supports the Bluetooth LE Audio standard. The headphones 210 are provided with components such as a second Bluetooth LE Audio module, a traditional Bluetooth module, and / or a low-power Bluetooth module that support the Bluetooth LE Audio standard. Among them, the headphones 210 can be true wireless headphones (Ture Wireless Stereo, TWS). The true wireless headphones can be any one of in-ear headphones, semi-in-ear headphones, and open headphones.

[0057] Optionally, the smart device 300 can also be referred to as a sound source device and can include devices such as a smartphone, a laptop computer, and / or a pad. It can be a device that does not support the Bluetooth LE Audio standard. For these smart devices, audio signals can be transmitted to headphone devices such as true wireless headphones through classic Bluetooth or low-power Bluetooth. In the playback system provided in this embodiment, the smart device 300 can build a wireless communication network based on WiFi with the WiFi module 130 of the headphone charging case 100 and transmit high-quality audio signals to the headphone charging case 100 through the wireless communication network. For the above smart devices that do not support the Bluetooth LE Audio standard, the solution of transmitting high-quality audio signals in this embodiment can make full use of the high-quality audio transmission advantages of the headphones 210 that support the Bluetooth LE Audio standard and effectively improve the effect of the headphones playing the corresponding audio. Therefore, this embodiment has broad and prominent practical value.

[0058] The headphone charging case 100 can transmit the corresponding audio signals to the second Bluetooth LE Audio module of the headphones 210 through the first Bluetooth LE Audio module 120, so that the headphones 210 can receive high-quality audio signals, thereby improving the playback quality of the corresponding audio signals.

[0059] In this embodiment, by means of a headphone charging case that supports the Bluetooth LE Audio standard and WiFi-related transmission protocols, high-quality audio signals or music signals can be provided to the corresponding headphones by a smart device 300 that cannot support the Bluetooth LE Audio standard, which has great practical value.

[0060] Optionally, the smart device 300 is further configured to identify whether it has the Bluetooth LE Audio transmission capability. The smart device 300 can determine whether it has the Bluetooth LE Audio transmission capability by identifying whether there is a structure and / or communication port that supports the Bluetooth LE Audio standard locally. If the smart device 300 has the Bluetooth LE Audio transmission capability, a Bluetooth LE Audio transmission channel is established with the earphone 210 to transmit high-quality audio signals to the earphone 210 through the Bluetooth LE Audio transmission channel. If the smart device 300 does not have the Bluetooth LE Audio transmission capability, a wireless communication network can be established between the smart device 300 and the earphone charging case 100 based on WiFi, so as to first transmit audio signals to the earphone charging case 100 through the wireless communication network, and then the earphone charging case 100 transmits the corresponding audio signals to the earphone 210.

[0061] Optionally, the earphone charging case 100 is further configured to establish a wireless communication network with the smart device 300 when it identifies that the smart device 300 does not have the Bluetooth LE Audio transmission capability, so that the smart device 300 transmits high-quality audio to the earphone charging case 100 through the wireless communication network. Optionally, the earphone charging case 300 can send a first preset message to the smart device through the first Bluetooth LE Audio module 120. When receiving the feedback information of the smart device 300 for the first preset message, it is determined that the smart device 300 has the Bluetooth LE Audio transmission capability. When not receiving the feedback information of the smart device 300 for the first preset message, it is determined that the smart device 300 does not have the Bluetooth LE Audio transmission capability. Optionally, when obtaining the message of whether the smart device 300 has the Bluetooth LE Audio transmission capability, the earphone charging case 100 can synchronize the message to the corresponding earphone 210 through modules such as the first Bluetooth LE Audio module 120, the traditional Bluetooth module, and / or the low-power Bluetooth module, so that the earphone 210 can know whether the smart device has the Bluetooth LE Audio transmission capability.

[0062] Optionally, the earphone 210 is further configured to establish a Bluetooth LE Audio transmission channel with the smart device 300 when it is recognized that the smart device 300 has the Bluetooth LE Audio transmission capability, so as to receive the audio signal of the smart device 300 through the Bluetooth LE Audio transmission channel. Optionally, the earphone 210 may send a second preset message to the smart device through the Bluetooth LE Audio module of the earphone. When receiving the feedback information of the smart device for the second preset message, it is determined that the smart device 300 has the Bluetooth LE Audio transmission capability. When not receiving the feedback information of the smart device 300 for the second preset message, it is determined that the smart device 300 does not have the Bluetooth LE Audio transmission capability. Optionally, when obtaining the message of whether the smart device 300 has the Bluetooth LE Audio transmission capability, the earphone 210 may synchronize the message to the corresponding earphone charging case 100 through modules such as the second Bluetooth LE Audio module, the traditional Bluetooth module, and / or the low-power Bluetooth module, so that the earphone charging case 100 can know whether the smart device has the Bluetooth LE Audio transmission capability.

[0063] In this embodiment, the Bluetooth LE Audio is used to transmit the audio signal. Since the Bluetooth LE Audio supports the synchronous transmission of a single audio source to multiple devices (such as the left and right earphones, etc.), the synchronization time difference can be controlled within the microsecond level, solving the delay problem of the traditional Bluetooth master-slave transmission.

[0064] The above playback system includes the earphone device described in any of the above embodiments, and has all the beneficial effects of the earphone device described in any of the above embodiments, which will not be elaborated here.

[0065] Although the present application has been shown and described with respect to one or more implementations, those skilled in the art will envision equivalent variations and modifications based on a reading and understanding of this specification and the drawings. The present application includes all such modifications and variations and is limited only by the scope of the appended claims. In particular, with respect to the various functions performed by the above components, the terms used to describe such components are intended to correspond to any component that performs the specified function of the component (e.g., it is functionally equivalent), unless otherwise indicated, even if structurally different from the disclosed structure that performs the function in the exemplary implementations of the present specification shown herein.

[0066] That is, the above description is only the embodiments of the present application, and thus does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, such as the mutual combination of technical features between the embodiments, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

[0067] In addition, in the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, for structural elements with the same or similar characteristics, the present application may use the same or different reference numerals for identification. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined.

[0068] In the present application, the word "exemplary" is used to mean "serving as an example, illustration, or explanation". Any embodiment described as "exemplary" in the present application is not necessarily to be construed as more preferred or more advantageous than other embodiments. The above description is given so that any person skilled in the art can make and use the present application. In the above description, various details are set forth for purposes of explanation. It should be understood that those of ordinary skill in the art can recognize that the present application can be practiced without these specific details. In other embodiments, well-known structures and processes are not elaborated in detail so as not to obscure the description of the present application with unnecessary details. Therefore, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

Claims

1. An earphone charging case, characterized in that, The earphone charging case includes a first Bluetooth LE Audio module, a WiFi module, and a charging module; The WiFi module is used to access the wireless communication network corresponding to the smart device and receive the audio signal transmitted by the smart device through the wireless communication network; The first Bluetooth LE Audio module is used to connect the earphone corresponding to the earphone charging case and send the audio signal to the earphone; The charging module is used to store electrical energy and charge the earphone when the earphone is connected to the power supply port.

2. The earphone charging case according to claim 1, wherein The wireless communication network includes at least one of a WiFi direct connection network, a multimedia content transmission network based on the DLNA protocol, and an audio signal transmission network based on the Airplay protocol.

3. The earphone charging case according to claim 1, characterized in that, The earphone charging case further includes a processor; the processor is respectively connected to the first Bluetooth LE Audio module, the WiFi module, and the charging module.

4. The earphone charging case according to claim 3, characterized in that, The processor is used to enable the first Bluetooth LE Audio module when identifying the communication requirement of the smart device, and control the first Bluetooth LE Audio module to go into sleep mode when the communication requirement of the smart device is not identified.

5. The earphone charging case according to claim 3, characterized in that The processor is used to monitor the power of the charging module, and when the power is less than the power threshold, control the WiFi module and the first Bluetooth LE Audio module to go into sleep mode respectively.

6. The earphone charging case according to claim 3, wherein, The processor is used to obtain a quality factor for describing the communication quality between the first Bluetooth LE Audio module and the earphone, and when the quality factor exceeds the preset factor range, control the first Bluetooth LE Audio module to go into sleep mode.

7. The earphone charging case according to claim 6, wherein, The quality factor includes at least one of a signal strength indication, a bit error rate, a packet error rate, a signal-to-noise ratio, and a retransmission ratio.

8. An earphone device, characterized in that, The earphone device includes the earphone charging case according to any one of claims 1 to 7 and an earphone charged by the earphone charging case; The earphone includes a second Bluetooth LE Audio module, and the second Bluetooth LE Audio module is used to connect the first Bluetooth LE Audio module of the earphone charging case.

9. The earphone device according to claim 8, characterized in that, The earphone further includes a charging port and a speaker; The charging port is used to connect to the power supply port of the earphone charging case when the earphone is placed in the earphone charging case, so that the earphone charging case charges the earphone; The speaker is used to play the audio signal received by the earphone.

10. A playback system, characterized in that, The playback system includes a smart device and the earphone device according to claim 8 or 9; The smart device is used to transmit an audio signal to the earphone charging case through a wireless communication network.

11. The playback system according to claim 10, characterized in that, The smart device is further used to identify whether it has the Bluetooth LE Audio transmission ability. If it has the Bluetooth LE Audio transmission ability, a Bluetooth LE Audio transmission channel is established with the earphone. If it does not have the Bluetooth LE Audio transmission ability, a wireless communication network is established with the earphone charging case; Alternatively, the earphone charging case is further used to establish a wireless communication network with the smart device when identifying that the smart device does not have the Bluetooth LE Audio transmission ability; Alternatively, the earphone is further configured to establish a Bluetooth LE Audio transmission channel with the smart device when it is recognized that the smart device has the Bluetooth LE Audio transmission capability.

Images