Bluetooth earphone control method and Bluetooth earphone

Abstract

The invention discloses a Bluetooth headset control method and a Bluetooth headset, the Bluetooth headset comprises a first headset and a second headset, when the first headset is used as a master headset, the second headset is used as a slave headset, and the method comprises the following steps: acquiring first signal information, the first signal information comprises a signal strength indication of connection between the first earphone and the second earphone, a signal strength indication of connection between the first earphone and the Bluetooth device, and a first sound signal collected by the first microphone; obtaining second signal information through a second Bluetooth link, wherein the second signal information comprises a signal strength indication of connection between a second earphone and the Bluetooth device and a second sound signal collected by a second microphone; when it is determined that the first signal information and the second signal information meet the preset signal condition, a switching instruction is sent to the second earphone through the second Bluetooth link, and the switching instruction is used for instructing the second earphone to serve as the main earphone to establish the Bluetooth link with the Bluetooth device. Through the method, the accuracy of switching the main earphone of the Bluetooth earphone can be effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of Bluetooth devices, in particular to a control method of a Bluetooth earphone and the Bluetooth earphone. BACKGROUND

[0002] With the development of technology and the improvement of living standards, various Bluetooth devices have entered the public eye, and Bluetooth earphones, as a convenient-to-carry, convenient-to-wear, and ready-to-use playback device, have been integrated into people's daily life. People can use earphones to listen to music or make calls while working or exercising.

[0003] However, the current Bluetooth earphones are difficult to adapt to different wearing states of users and cannot meet the needs. SUMMARY

[0004] The technical problem solved by the present application is to provide a control method of a Bluetooth earphone and the Bluetooth earphone, which can effectively improve the accuracy of switching between the master earphone and the slave earphone of the Bluetooth earphone, effectively improve the clarity and smoothness of making calls using the Bluetooth earphone, and effectively improve the applicability of the Bluetooth earphone.

[0005] In a first aspect, the present application provides a control method of a Bluetooth earphone, the Bluetooth earphone comprising a first earphone and a second earphone, when the first earphone as a master earphone establishes a first Bluetooth link with a Bluetooth device, the second earphone as a slave earphone establishes a second Bluetooth link with the first earphone, the first earphone comprises a first microphone, and the second earphone comprises a second microphone, the method comprising: obtaining first signal information, the first signal information comprising a signal strength indication of a connection between the first earphone and the second earphone, a signal strength indication of a connection between the first earphone and the Bluetooth device, and a first sound signal collected by the first microphone; obtaining second signal information through the second Bluetooth link, the second signal information comprising a signal strength indication of a connection between the second earphone and the Bluetooth device and a second sound signal collected by the second microphone; when the first signal information and the second signal information satisfy a preset signal condition, sending a switching instruction to the second earphone through the second Bluetooth link, the switching instruction being used to instruct the second earphone to establish a Bluetooth link with the Bluetooth device as a master earphone.

[0006] In a second aspect, the present application provides a Bluetooth earphone, the Bluetooth earphone comprising a first earphone and a second earphone, the first earphone comprising a first microphone and a Bluetooth chip, the first microphone being coupled to the Bluetooth chip, and the second earphone comprising a second microphone; the Bluetooth chip being used to execute the method as described above.

[0007] The beneficial effects of the present application are: different from the prior art, by establishing a second Bluetooth link between the second earphone as a slave earphone and the first earphone as a master earphone when the first earphone establishes a first Bluetooth link with the Bluetooth device, obtaining first signal information of the first earphone, the first signal information including signal strength indication of the connection between the first earphone and the second earphone, signal strength indication of the connection between the first earphone and the Bluetooth device, and first sound signal collected by the first microphone, and obtaining second signal information through the second Bluetooth link, the second signal information including signal strength indication of the connection between the second earphone and the Bluetooth device and second sound signal collected by the second microphone, and by sending a switching instruction indicating the second earphone as a master earphone to establish a Bluetooth link with the Bluetooth device through the second Bluetooth link when the first signal information and the second signal information meet the preset signal condition, the switching from the first earphone as a master earphone to the second earphone as a master earphone is completed. The wearing state of the Bluetooth earphone can be confirmed through the first signal information and the second signal information to determine whether the switching of the master earphone is needed, effectively improving the accuracy of the switching of the master earphone of the Bluetooth earphone, and when the user only wears one of the earphones, the earphone is selected as the master earphone, reducing the possibility of unclear communication caused by the master earphone not being the earphone worn by the user, and the user can maintain clear and smooth communication when only wearing one earphone without additional switching and setting, effectively improving the clarity and smoothness of communication using the Bluetooth earphone, effectively improving the user's communication experience, and effectively improving the applicability of the Bluetooth earphone. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 is a circuit structure schematic block diagram of the Bluetooth earphone embodiment of the present application;

[0009] Figure 2 is a use scenario schematic block diagram of the Bluetooth earphone embodiment of the present application;

[0010] Figure 3 is a flowchart of the control method embodiment of the Bluetooth earphone of the present application. DETAILED DESCRIPTION

[0011] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0012] With the development of society, people are good at using technological creation tools to improve and enhance the quality of life. Bluetooth earphones, as a product that applies Bluetooth technology to hands-free earphones, allow users to be free from the constraints of wires and easily communicate in various ways. Bluetooth earphones are generally recognized by users for their convenience, stable signal, and comfortable wearing. Among them, true wireless stereo (TWS) Bluetooth earphones are a device that transmits stereo sound signals based on Bluetooth technology, which can be connected with Bluetooth devices such as mobile phones and computers to realize data transmission, earphone calls and other functions.

[0013] The present inventors have found through long-term research that true wireless stereo Bluetooth earphones usually have two earphones. In the call mode, one earphone is usually selected as the master earphone, and only the microphone audio picked up by the master earphone will be uploaded to the Bluetooth device for call use. In the related art, in order to save costs, the Bluetooth earphones usually do not have a wearing detection function, which makes it difficult to realize flexible switching of the master earphone of the Bluetooth earphones. For example, in the call mode, the user only wears one earphone and selects the earphone as the master earphone. When the user switches to wearing only the other earphone, the Bluetooth earphones do not automatically switch the master earphone, so that the master earphone is the earphone not worn by the user, thereby affecting normal communication. Based on this, the present application proposes the following solutions to solve the above technical problems.

[0014] The following embodiments of the Bluetooth earphones of the present application describe an exemplary structure of the Bluetooth earphones.

[0015] As Figure 1As shown, the Bluetooth earphone 1 comprises a first earphone 10 and a second earphone 20. The first earphone 10 is provided with a first microphone 110 and a first Bluetooth chip 120. The first microphone 110 is coupled to the first Bluetooth chip 120. The first microphone 110 comprises a first feedback microphone 111 and a first talk microphone 112. The first feedback microphone 111 and the first talk microphone 112 are respectively coupled to the first Bluetooth chip 120. The second earphone 20 is provided with a second microphone 210 and a second Bluetooth chip 220. The second microphone 210 is coupled to the second Bluetooth chip 220. The second microphone 210 comprises a second feedback microphone 211 and a second talk microphone 212. The second feedback microphone 211 and the second talk microphone 212 are respectively coupled to the second Bluetooth chip 220. The first feedback microphone 111 and the second feedback microphone 211 are feedback microphones (FB Mic, Feedback Microphone) located inside the earphone and used to pick up the sound inside the earphone to obtain a feedback sound signal. The first talk microphone 112 and the second talk microphone 212 are microphones used for talking and used to pick up the user's voice to obtain a talk sound signal. The first Bluetooth chip 120 and the second Bluetooth chip 220 are respectively used to obtain the signal indication strength of the connection between the first earphone 10 and the second earphone 20 and other terminals. The signal indication strength can be, for example, a received signal strength indication (RSSI). According to the size of the RSSI, the distance between the current earphone and other terminals can be calculated.

[0016] As shown in FIG. 1, the Bluetooth earphone 1 comprises a first earphone 10 and a second earphone 20. The first earphone 10 is provided with a first microphone 110 and a first Bluetooth chip 120. The first microphone 110 is coupled to the first Bluetooth chip 120. The first microphone 110 comprises a first feedback microphone 111 and a first talk microphone 112. The first feedback microphone 111 and the first talk microphone 112 are respectively coupled to the first Bluetooth chip 120. The second earphone 20 is provided with a second microphone 210 and a second Bluetooth chip 220. The second microphone 210 is coupled to the second Bluetooth chip 220. The second microphone 210 comprises a second feedback microphone 211 and a second talk microphone 212. The second feedback microphone 211 and the second talk microphone 212 are respectively coupled to the second Bluetooth chip 220. The first feedback microphone 111 and the second feedback microphone 211 are feedback microphones (FB Mic, Feedback Microphone) located inside the earphone and used to pick up the sound inside the earphone to obtain a feedback sound signal. The first talk microphone 112 and the second talk microphone 212 are microphones used for talking and used to pick up the user's voice to obtain a talk sound signal. The first Bluetooth chip 120 and the second Bluetooth chip 220 are respectively used to obtain the signal indication strength of the connection between the first earphone 10 and the second earphone 20 and other terminals. The signal indication strength can be, for example, a received signal strength indication (RSSI). According to the size of the RSSI, the distance between the current earphone and other terminals can be calculated. Figure 2 As shown in FIG. 1, the Bluetooth earphone 1 comprises a first earphone 10 and a second earphone 20. The first earphone 10 is provided with a first microphone 110 and a first Bluetooth chip 120. The first microphone 110 is coupled to the first Bluetooth chip 120. The first microphone 110 comprises a first feedback microphone 111 and a first talk microphone 112. The first feedback microphone 111 and the first talk microphone 112 are respectively coupled to the first Bluetooth chip 120. The second earphone 20 is provided with a second microphone 210 and a second Bluetooth chip 220. The second microphone 210 is coupled to the second Bluetooth chip 220. The second microphone 210 comprises a second feedback microphone 211 and a second talk microphone 212. The second feedback microphone 211 and the second talk microphone 212 are respectively coupled to the second Bluetooth chip 220. The first feedback microphone 111 and the second feedback microphone 211 are feedback microphones (FB Mic, Feedback Microphone) located inside the earphone and used to pick up the sound inside the earphone to obtain a feedback sound signal. The first talk microphone 112 and the second talk microphone 212 are microphones used for talking and used to pick up the user's voice to obtain a talk sound signal. The first Bluetooth chip 120 and the second Bluetooth chip 220 are respectively used to obtain the signal indication strength of the connection between the first earphone 10 and the second earphone 20 and other terminals. The signal indication strength can be, for example, a received signal strength indication (RSSI). According to the size of the RSSI, the distance between the current earphone and other terminals can be calculated.

[0017] The first earphone 10 is taken as the execution subject in this embodiment. When the first earphone 10 establishes the first Bluetooth link with the Bluetooth device 2 as the master earphone, the second earphone 20 establishes the second Bluetooth link with the first earphone 10 as the slave earphone. For details, refer to the description of the control method of the Bluetooth earphone in this application.

[0018] As shown in Figure 3 the control method of the Bluetooth earphone in this application can include:

[0019] S100: Obtain first signal information, which includes the signal strength indication of the connection between the first earphone and the second earphone, the signal strength indication of the connection between the first earphone and the Bluetooth device, and the first sound signal collected by the first microphone.

[0020] S200: Obtain second signal information through the second Bluetooth link, which includes the signal strength indication of the connection between the second earphone and the Bluetooth device and the second sound signal collected by the second microphone.

[0021] S300: When the first signal information and the second signal information meet the preset signal condition, send a switching instruction to the second earphone through the second Bluetooth link, which is used to instruct the second earphone to establish a Bluetooth link with the Bluetooth device as the master earphone.

[0022] By establishing a first Bluetooth link when the first earphone 10 as the master earphone establishes a second Bluetooth link with the Bluetooth device 2, and by obtaining the first signal information of the first earphone 10, the first signal information includes the signal strength indication of the connection between the first earphone 10 and the second earphone 20, the signal strength indication of the connection between the first earphone 10 and the Bluetooth device 2, and the first sound signal collected by the first microphone 110, and by obtaining the second signal information through the second Bluetooth link, the second signal information includes the signal strength indication of the connection between the second earphone 20 and the Bluetooth device 2 and the second sound signal collected by the second microphone 210, when it is determined that the first signal information and the second signal information meet the preset signal condition, the switching instruction indicating that the second earphone 20 as the master earphone establishes the Bluetooth link with the Bluetooth device 2 is sent to the second earphone 20 through the second Bluetooth link, so as to complete the switching from the first earphone 10 as the master earphone to the second earphone 20 as the master earphone. The wearing state of the Bluetooth earphone 1 can be confirmed through the first signal information and the second signal information to determine whether the switching of the master earphone is needed, which effectively improves the accuracy of the switching of the master earphone of the Bluetooth earphone 1, and when the user only wears one of the earphones, the earphone is selected as the master earphone, which reduces the possibility that the call is not clear due to the master earphone not being the earphone worn by the user. The user does not need to perform additional switching and setting to maintain clear and smooth communication when only wearing one earphone, which effectively improves the clarity and smoothness of the call using the Bluetooth earphone 1, effectively improves the user's call experience, and effectively improves the applicability of the Bluetooth earphone 1.

[0023] The control method of the Bluetooth earphone is described in detail below.

[0024] S100: Obtain first signal information, the first signal information including a signal strength indication of the connection between the first earphone and the second earphone, a signal strength indication of the connection between the first earphone and the Bluetooth device, and a first sound signal collected by a first microphone.

[0025] The first Bluetooth chip 120 of the first earphone 10 obtains the first signal information indicating the state of the first earphone 10, wherein the signal strength indication of the connection between the first earphone 10 and the second earphone 20 can represent the distance between the first earphone 10 and the second earphone 20, and the signal strength indication of the connection between the first earphone 10 and the Bluetooth device 2 can represent the distance between the first earphone 10 and the Bluetooth device 2.

[0026] In some embodiments, when the Bluetooth earphone 1 enters the call state, one of the first earphone 10 and the second earphone 20 can be selected as the initially selected master earphone, which can be randomly selected or pre-set by the user according to habits as a fixed earphone. In this embodiment, the initially selected master earphone is the first earphone 10.

[0027] S200: obtaining second signal information through the second Bluetooth link, the second signal information comprising a signal strength indication of the second earphone connecting with the Bluetooth device and a second sound signal collected by the second microphone.

[0028] The first Bluetooth chip 120 of the first earphone 10 can obtain the second signal information indicating the state of the second earphone 20 through the second Bluetooth link, wherein the signal strength indication of the second earphone 20 connecting with the Bluetooth device 2 can represent the distance between the second earphone 20 and the Bluetooth device 2. Alternatively, the second Bluetooth chip 220 of the second earphone 20 can obtain the second signal information and then send it to the first Bluetooth chip 120 of the first earphone 10 through the second Bluetooth link.

[0029] S300: when the first signal information and the second signal information satisfy the preset signal condition, sending a switching instruction to the second earphone through the second Bluetooth link, the switching instruction being used to instruct the second earphone to establish a Bluetooth link with the Bluetooth device as a master earphone.

[0030] The first Bluetooth chip 120 of the first earphone 10 is used to confirm whether the first signal information and the second signal information satisfy the preset signal condition, and when it is determined that the first signal information and the second signal information satisfy the preset signal condition, i.e., when it is determined that the first earphone 10 is not worn by the user while the second earphone 20 is worn by the user, the first Bluetooth chip 120 sends a switching instruction to the second earphone 20 through the second Bluetooth link, the switching instruction being used to instruct the second earphone 20 to establish a Bluetooth link with the Bluetooth device 2 as a master earphone, so as to complete the switching of the master earphone from the first earphone 10 to the second earphone 20.

[0031] By comprehensively representing the first signal information indicating the wearing state of the first earphone 10 and the second signal information indicating the wearing state of the second earphone 20, the master earphone can be switched when it is determined that the first earphone 10 is not worn by the user while the second earphone 20 is worn by the user, which effectively improves the accuracy of the master earphone switching of the Bluetooth earphone 1, reduces the possibility of unclear communication caused by the master earphone not being the earphone worn by the user, and enables the user to maintain clear and smooth communication when only wearing one earphone without additional switching and setting, effectively improves the clarity and smoothness of the communication using the Bluetooth earphone 1, effectively improves the communication experience of the user, and effectively improves the applicability of the Bluetooth earphone 1.

[0032] Optionally, the first microphone 110 comprises a first feedback microphone 111, and the first sound signal comprises a first feedback sound signal collected by the first feedback microphone 111. The second microphone 210 comprises a second feedback microphone 211, and the second sound signal comprises a second feedback sound signal collected by the second feedback microphone 211. The first Bluetooth chip 120 of the first earphone 10 can determine the wearing state of the Bluetooth earphone 1 according to the first feedback sound signal and the second feedback sound signal. For details, refer to the following steps included in S300.

[0033] S310: When it is determined that the intensity of the second feedback sound signal is greater than the intensity of the first feedback sound signal, calculating a difference between the intensity of the second feedback sound signal and the intensity of the first feedback sound signal to obtain a first intensity difference.

[0034] Since the feedback microphone is a microphone arranged inside the earphone, when the earphone is worn, the feedback sound signal acquired by the feedback microphone will be stronger due to the sound propagation in the ear and the sound reflection in the ear. Therefore, the intensity of the second feedback sound signal of the second earphone 20 is compared with the intensity of the first feedback sound signal of the first earphone 10, and the greater one is more likely to be in the wearing state.

[0035] Optionally, after the first Bluetooth chip 120 of the first earphone 10 acquires the first feedback sound signal of the first earphone 10 and the second feedback sound signal of the second earphone 20, the first Bluetooth chip 120 performs Fourier transform on the first feedback sound signal and the second feedback sound signal respectively to filter the intensity of the signal in a specific frequency range, for example, the intensity of the signal in the frequency range of human voice, thereby reducing the amount of data to be processed and effectively improving the accuracy of the wearing state recognition of the Bluetooth earphone 1.

[0036] When the intensity of the second feedback sound signal of the second earphone 20 is greater than the intensity of the first feedback sound signal of the first earphone 10, it indicates that the second earphone 20 is more likely to be in the wearing state than the first earphone 10. However, due to the influence of external factors such as different positions and tightness of the user's left and right ears, even if the first earphone 10 and the second earphone 20 are both in the wearing state, the intensity of the first feedback sound signal of the first earphone 10 and the intensity of the second feedback sound signal of the second earphone 20 may also have a certain size difference. Therefore, in addition to simply comparing the size of the intensity of the second feedback sound signal and the first feedback sound signal, the difference between the intensity of the second feedback sound signal and the intensity of the first feedback sound signal is also calculated to obtain a first intensity difference. The greater the first intensity difference is, the greater the possibility that only the second earphone 20 is in the wearing state is.

[0037] S320: determining that the first intensity difference is greater than the first intensity threshold value, obtaining a first distance between the first earphone and the Bluetooth device according to the signal strength indication of the connection between the first earphone and the Bluetooth device, and obtaining a second distance between the second earphone and the Bluetooth device according to the signal strength indication of the connection between the second earphone and the Bluetooth device.

[0038] In order to reduce the error of the wearing state recognition of the Bluetooth earphone 1 and effectively improve the accuracy of the wearing state recognition of the Bluetooth earphone 1, the first intensity threshold value is reasonably set to determine whether the first intensity difference meets the condition, and the wearing state of the Bluetooth earphone 1 is determined on the basis of the feedback sound signal and the signal strength indication. The signal strength indication can be a received signal strength indication (RSSI). The greater the RSSI is, the better the signal transmission strength between the two ends of the connection is, that is, the closer the distance between the two ends of the connection is. According to the RSSI, the first distance between the first earphone 10 and the Bluetooth device 2 can be calculated, and the second distance between the second earphone 20 and the Bluetooth device 2 can be calculated according to the signal strength indication of the connection between the second earphone 20 and the Bluetooth device 2.

[0039] S321: determining that the first distance is greater than the second distance, and calculating a difference between the first distance and the second distance to obtain a distance difference.

[0040] When the first distance is greater than the second distance, it can be indicated that the first earphone 10 is farther away from the Bluetooth device 2, and the second earphone 20 is closer to the Bluetooth device 2. According to the use habit of people, when wearing a single earphone to make a call, people usually hold the device used for calling such as a mobile phone in their hand, and the earphone not worn is placed on the table, that is, the earphone worn at this time is closer to the Bluetooth device 2.

[0041] If the first distance between the first earphone 10 and the Bluetooth device 2 is greater than the second distance between the second earphone 20 and the Bluetooth device 2, it indicates that the second earphone 20 is more likely to be worn by the user, but in order to reduce the possibility of misjudgment and improve the accuracy of the judgment, the difference between the first distance and the second distance is calculated to obtain a distance difference, and further confirmation is performed.

[0042] S330: determining that the distance difference is greater than the first distance threshold value, and obtaining a third distance between the first earphone and the second earphone according to the signal strength indication of the connection between the first earphone and the second earphone.

[0043] The size of the signal strength indication of the connection between the first earphone 10 and the second earphone 20 can indicate the distance between the first earphone 10 and the second earphone 20, so as to calculate the third distance between the first earphone 10 and the second earphone 20 according to the signal strength indication of the connection between the first earphone 10 and the second earphone 20. When the user does not wear both earphones, the two earphones are usually placed together, so the distance between the first earphone 10 and the second earphone 20 is small at this time. When the user wears both earphones, the distance between the first earphone 10 and the second earphone 20 is also small because the distance between the two ears of the user is limited. When the user wears only one earphone, the other earphone not worn usually has a certain distance from the earphone worn, so the second strength indication threshold is reasonably set to confirm the distance between the first earphone 10 and the second earphone 20, thereby effectively reducing the error of the master earphone switching and effectively improving the accuracy of the switching.

[0044] S331: When the third distance is greater than the second distance threshold, it is determined that the first signal information and the second signal information meet the preset signal condition.

[0045] If the first distance threshold is greater than the first distance threshold, and the third distance between the first earphone 10 and the second earphone 20 is greater than the second distance threshold, it is determined that the first signal information and the second signal information meet the preset signal condition, that is, it is considered that the first earphone 10 is not worn by the user at this time, and the second earphone 20 is worn by the user. In order to improve the clarity and fluency of the user's call, the master earphone is switched from the first earphone 10 to the second earphone 20, so as to establish a Bluetooth connection between the second Bluetooth chip 220 of the second earphone 20 and the Bluetooth device 2, thereby sending the audio data picked up by the second call microphone 212 of the second earphone 20 to the Bluetooth device 2, and the Bluetooth device 2 transmits the audio data to the opposite device in communication with the user for playing, thereby realizing smooth and clear voice communication of the user using the Bluetooth earphone 1.

[0046] Optionally, the first microphone 110 includes a first call microphone 112, and the first sound signal includes a first call sound signal collected by the first call microphone 112. The second microphone 210 includes a second call microphone 212, and the second sound signal includes a second call sound signal collected by the second call microphone 212. The first Bluetooth chip 120 of the first earphone 10 can determine the wearing state of the Bluetooth earphone 1 according to the first call sound signal and the second call sound signal. For details, refer to the following steps included in S300.

[0047] S340: When it is determined that the third distance is less than or equal to the second distance threshold value and the intensity of the second call sound signal is greater than the intensity of the first call sound signal, a difference between the intensities of the second call sound signal and the first call sound signal is calculated to obtain a second intensity difference.

[0048] In order to reduce the error of the wearing state recognition of the Bluetooth earphone 1 and effectively improve the accuracy of the wearing state recognition of the Bluetooth earphone 1, the call sound signal can be comprehensively judged on the basis of the feedback sound signal and the distance. The first call microphone 112 and the second call microphone 212 are used to capture the speaking sound of the user to obtain the first call sound signal and the second call sound signal, respectively. When the earphone is worn, the call microphone is closer to the face of the user than when the earphone is not worn, and thus the captured speaking sound is larger and clearer, and the intensity of the obtained call sound signal is also larger. Therefore, the intensity of the first call sound signal of the first earphone 10 is compared with the intensity of the second call sound signal of the second earphone 20, and the larger one is more likely to be in the wearing state.

[0049] Optionally, after the first Bluetooth chip 120 of the first earphone 10 obtains the first call sound signal and the second call sound signal, the first Bluetooth chip 120 performs Fourier transform on the first call sound signal and the second call sound signal to screen the intensity of the signal in a specific frequency range, for example, the intensity of the signal in the frequency range of human voice. In this way, the amount of data to be processed is reduced, and the accuracy of the wearing state recognition of the Bluetooth earphone 1 is effectively improved.

[0050] When the intensity of the second call sound signal of the second earphone 20 is greater than the intensity of the first call sound signal of the first earphone 10, it indicates that the second earphone 20 is more likely to be in the wearing state than the first earphone 10. However, due to the influence of external factors such as the environment in which the user is located, even when the first earphone 10 and the second earphone 20 are both in the wearing state, the intensities of the first call sound signal of the first earphone 10 and the second call sound signal of the second earphone 20 can also have a certain difference. Therefore, in order to improve the accuracy of the wearing state recognition of the Bluetooth earphone 1 and reduce the error of the recognition, in addition to simply comparing the intensities of the first call sound signal and the second call sound signal, a difference between the intensities of the second call sound signal and the first call sound signal is calculated to obtain a second intensity difference. The greater the second intensity difference is, the greater the possibility that only the second earphone 20 is in the wearing state is.

[0051] S350: When it is determined that the second intensity difference is greater than a second intensity threshold value, it is determined that the first signal information and the second signal information satisfy a preset signal condition.

[0052] If the first Bluetooth chip 120 of the first earphone 10 determines that the second intensity difference value is greater than the second intensity threshold value, it is determined that the first signal information and the second signal information meet the preset signal condition, that is, it is considered that the first earphone 10 is not worn by the user at this time, and the second earphone 20 is worn by the user. In order to improve the clarity and fluency of the user's call, the master earphone is switched from the first earphone 10 to the second earphone 20, so as to establish a Bluetooth connection between the second Bluetooth chip 220 of the second earphone 20 and the Bluetooth device 2, thereby sending the audio data picked up by the second call microphone 212 of the second earphone 20 to the Bluetooth device 2, and the Bluetooth device 2 transmits the audio data to the opposite end device in communication with the user for playing, thereby realizing smooth and clear voice communication of the user using the Bluetooth earphone 1.

[0053] S360: When it is determined that the distance difference value is less than or equal to the first distance threshold value, and the intensity of the second call sound signal is greater than the intensity of the first call sound signal, the difference between the intensities of the second call sound signal and the first call sound signal is calculated to obtain a second intensity difference value.

[0054] If the distance difference value is less than or equal to the first distance threshold value, that is, it is difficult to accurately identify the wearing state of the Bluetooth earphone 1 according to the signal intensity, the wearing state is identified on the basis of the comprehensive call sound signal. When the intensity of the second call sound signal of the second earphone 20 is greater than the intensity of the second call sound signal of the first earphone 10, it indicates that the second earphone 20 is more likely to be in the wearing state than the first earphone 10. However, due to the influence of external factors such as the environment in which the user is located, even if the first earphone 10 and the second earphone 20 are both in the wearing state, the intensities of the first call sound signal of the first earphone 10 and the second call sound signal of the second earphone 20 may also have a certain difference. Therefore, in order to improve the accuracy of identifying the wearing state of the Bluetooth earphone 1 and reduce the error of identification, in addition to simply comparing the intensities of the first call sound signal and the second call sound signal, the difference between the intensities of the second call sound signal and the first call sound signal is also calculated to obtain a second intensity difference value. The greater the second intensity difference value is, the greater the possibility that only the second earphone 20 is in the wearing state is.

[0055] After S360 is executed, if the first Bluetooth chip 120 of the first earphone 10 determines that the second intensity difference value is greater than the second intensity threshold value, S350 is executed: When the second intensity difference value is greater than the second intensity threshold value, it is determined that the first signal information and the second signal information meet the preset signal condition.

[0056] Optionally, the first microphone 110 includes a first feedback microphone 111 and a first talk microphone 112, and the first sound signal includes a first feedback sound signal and a first talk sound signal. The second microphone 210 includes a second feedback microphone 211 and a second talk microphone 212, and the second sound signal includes a second feedback sound signal and a second talk sound signal. The first Bluetooth chip 120 of the first earphone 10 can comprehensively determine the wearing state of the Bluetooth earphone 1 according to the feedback sound signal and the talk sound signal. For details, refer to the following steps included in S300.

[0057] After performing S310, perform S370: when it is determined that the first intensity difference value is greater than the first intensity threshold value, and the intensity of the second talk sound signal is greater than the intensity of the first talk sound signal, calculate the difference between the intensity of the second talk sound signal and the intensity of the first talk sound signal to obtain a second intensity difference value.

[0058] When the intensity of the second talk sound signal of the second earphone 20 is greater than the intensity of the second talk sound signal of the first earphone 10, it indicates that the second earphone 20 is more likely to be in a wearing state than the first earphone 10.

[0059] After performing S370, if the first Bluetooth chip 120 of the first earphone 10 determines that the second intensity difference value is greater than the second intensity threshold value, perform S350: when it is determined that the second intensity difference value is greater than the second intensity threshold value, determine that the first signal information and the second signal information satisfy the preset signal condition.

[0060] The feedback sound signal obtained by the feedback microphone, the talk sound signal obtained by the talk microphone, and the signal intensity indication can determine the wearing state of the earphone of the Bluetooth earphone 1 without additional sensors on the Bluetooth earphone 1, thereby adaptively switching the master earphone, effectively improving the accuracy of the master earphone switching of the Bluetooth earphone 1, effectively improving the applicability of the Bluetooth earphone 1, and effectively improving the user's call experience.

[0061] Optionally, after obtaining the first signal information and the second signal information, the first Bluetooth chip 120 of the first earphone 10 can send the first signal information and the second signal information to the Bluetooth device 2 through the first Bluetooth link. The Bluetooth device 2 can be used to determine whether the first signal information and the second signal information satisfy the preset signal condition, to identify the wearing state of the Bluetooth earphone 1, and then confirm and switch the master earphone.

[0062] Optionally, the user can switch the master earphone by himself, for example, by operating the operation control on the first earphone 10 or the second earphone 20 to switch the master earphone, or by using the instruction sent by the Bluetooth device 2 to switch the master earphone.

[0063] Optionally, when the Bluetooth device 2 detects the triggering operation of the user, for example, when the user opens certain specific software or page, the Bluetooth headset 1 is sent with an instruction indicating switching the master headset, so as to switch the corresponding headset as the master headset.

[0064] Optionally, when one of the Bluetooth headsets 1 is cut off from the Bluetooth connection with the Bluetooth device 2 and the other headset due to low power or being put into the headset box, if the headset is the master headset, the master headset is switched to the other headset.

[0065] The above description is only an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A control method of a Bluetooth earphone, characterized by, The Bluetooth earphone includes a first earphone and a second earphone, the first earphone establishes a first Bluetooth link with a Bluetooth device as a master earphone, and the second earphone establishes a second Bluetooth link with the first earphone as a slave earphone, the first earphone includes a first microphone, and the second earphone includes a second microphone, and the method includes: obtaining first signal information, the first signal information including a signal strength indication of a connection between the first earphone and the second earphone, a signal strength indication of a connection between the first earphone and the Bluetooth device, and a first sound signal collected by the first microphone; obtaining second signal information through the second Bluetooth link, the second signal information including a signal strength indication of a connection between the second earphone and the Bluetooth device and a second sound signal collected by the second microphone; when the first signal information and the second signal information satisfy a preset signal condition, sending a switching instruction to the second earphone through the second Bluetooth link, the switching instruction being used to instruct the second earphone to establish a Bluetooth link with the Bluetooth device as a master earphone.

2. The method of claim 1, wherein, The first microphone includes a first feedback microphone, and the first sound signal includes a first feedback sound signal collected by the first feedback microphone; the second microphone includes a second feedback microphone, and the second sound signal includes a second feedback sound signal collected by the second feedback microphone; when the first signal information and the second signal information satisfy a preset signal condition, sending a switching instruction to the second earphone through the second Bluetooth link, the switching instruction being used to instruct the second earphone to establish a Bluetooth link with the Bluetooth device as a master earphone, includes: when the intensity of the second feedback sound signal is greater than the intensity of the first feedback sound signal, calculating a difference value between the intensity of the second feedback sound signal and the intensity of the first feedback sound signal to obtain a first intensity difference value.

3. The method of claim 2, wherein, after the calculating of the difference value between the intensity of the second feedback sound signal and the intensity of the first feedback sound signal to obtain a first intensity difference value, includes: when the first intensity difference value is greater than a first intensity threshold value, obtaining a first distance between the first earphone and the Bluetooth device according to the signal strength indication of the connection between the first earphone and the Bluetooth device, and obtaining a second distance between the second earphone and the Bluetooth device according to the signal strength indication of the connection between the second earphone and the Bluetooth device; when the first distance is greater than the second distance, calculating a difference value between the first distance and the second distance to obtain a distance difference value.

4. The method of claim 3, wherein, after the calculating of the difference value between the first distance and the second distance to obtain a first distance difference value, includes: when the distance difference value is greater than a first distance threshold value, obtaining a third distance between the first earphone and the second earphone according to the signal strength indication of the connection between the first earphone and the second earphone. determining that the third distance is greater than a second distance threshold, and determining that the first signal information and the second signal information satisfy the preset signal condition.

5. The method of claim 4, wherein, The first microphone comprises a first call microphone, and the first sound signal comprises a first call sound signal collected by the first call microphone; the second microphone comprises a second call microphone, and the second sound signal comprises a second call sound signal collected by the second call microphone. After the third distance between the first earphone and the second earphone is obtained according to the signal strength indication that the first earphone is connected with the second earphone, comprising: determining that the third distance is less than or equal to a second distance threshold, and the intensity of the second call sound signal is greater than the intensity of the first call sound signal, and calculating a difference value between the intensity of the second call sound signal and the intensity of the first call sound signal to obtain a second intensity difference value.

6. The method of claim 5, wherein, After the difference value between the intensity of the second call sound signal and the intensity of the first call sound signal is calculated to obtain a second intensity difference value, comprising: determining that the second intensity difference value is greater than a second intensity threshold, and determining that the first signal information and the second signal information satisfy the preset signal condition.

7. The method of claim 3, wherein, The first microphone comprises a first call microphone, and the first sound signal comprises a first call sound signal collected by the first call microphone; the second microphone comprises a second call microphone, and the second sound signal comprises a second call sound signal collected by the second call microphone. After the difference value between the first distance and the second distance is calculated to obtain a distance difference value, comprising: determining that the distance difference value is less than or equal to a first distance threshold, and the intensity of the second call sound signal is greater than the intensity of the first call sound signal, and calculating a difference value between the intensity of the second call sound signal and the intensity of the first call sound signal to obtain a second intensity difference value.

8. The method of claim 7, wherein, After the difference value between the intensity of the second call sound signal and the intensity of the first call sound signal is calculated to obtain a second intensity difference value, comprising: determining that the second intensity difference value is greater than a second intensity threshold, and determining that the first signal information and the second signal information satisfy the preset signal condition.

9. The method of claim 1, wherein, After the second signal information is obtained through the second Bluetooth link, comprising: sending the first signal information and the second signal information to the Bluetooth device through the first Bluetooth link, the Bluetooth device being configured to determine whether the first signal information and the second signal information satisfy a preset signal condition.

10. A Bluetooth earpiece, characterized in that, comprising: a first earphone and a second earphone, the first earphone comprising a first microphone and a Bluetooth chip, the first microphone being coupled to the Bluetooth chip, and the second earphone comprising a second microphone; the Bluetooth chip being configured to execute the method according to any one of claims 1-9.

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