Bluetooth devices and Bluetooth headsets

Abstract

Embodiments of the present application provide a Bluetooth device and a Bluetooth earphone. The Bluetooth device can include a Bluetooth communication module, a power supply and an electrical appliance. The power supply is configured to provide current for the Bluetooth communication module and the electrical appliance. When the Bluetooth communication module transmits a Bluetooth signal, the electrical appliance is in a first state, and the power supply outputs a first current. When the Bluetooth communication module does not transmit the Bluetooth signal, the electrical appliance is in a second state, and the power supply outputs a second current. A difference between the first current and the second current is within a first preset range. Embodiments of the present application can make the power supply output a relatively stable current, reduce electromagnetic energy emitted by the power supply due to large current fluctuation, and thus effectively reduce noise of the Bluetooth device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronics, and particularly relates to a Bluetooth device and a Bluetooth earphone. BACKGROUND

[0002] In recent years, the development of wireless technology has brought great convenience to people's life. Among them, various Bluetooth products using Bluetooth technology are deeply loved by people. Bluetooth products, especially Bluetooth earphones, often produce noise, such as current sound, during use, thereby affecting the user experience. SUMMARY

[0003] The embodiments of the present application provide a Bluetooth device and a Bluetooth earphone, which can effectively reduce the electromagnetic field radiation of the power supply in the Bluetooth device.

[0004] In a first aspect, the embodiments of the present application provide a Bluetooth device, which comprises a Bluetooth communication module, a power supply and an electric appliance, the power supply is configured to provide current for the Bluetooth communication module and the electric appliance, when the Bluetooth communication module transmits a Bluetooth signal, the electric appliance is in a first state, and the power supply outputs a first current; when the Bluetooth communication module does not transmit the Bluetooth signal, the electric appliance is in a second state, and the power supply outputs a second current; the difference between the first current and the second current is within a first preset range.

[0005] In a second aspect, the embodiments of the present application provide a Bluetooth earphone, which comprises a Bluetooth communication module, a power supply, an electric appliance and a loudspeaker, the power supply is configured to provide current for the Bluetooth communication module, the electric appliance and the loudspeaker, and during all or part of the process of establishing Bluetooth connection by the Bluetooth communication module, when the Bluetooth communication module transmits a Bluetooth signal, the power supply does not provide current for the electric appliance or provides a fourth current for the electric appliance, and when the Bluetooth communication module does not transmit a Bluetooth signal, the power supply provides a preset current for the electric appliance, so that the current output by the power supply is controlled within a second preset range.

[0006] In a third aspect, the embodiments of the present application provide a control method of a Bluetooth device, the Bluetooth device comprises a power supply and an electric appliance, and the method comprises:

[0007] when a Bluetooth signal is transmitted, controlling the electric appliance to be in a first state, and the power supply outputs a first current;

[0008] when a Bluetooth signal is not transmitted, controlling the electric appliance to be in a second state, and the power supply outputs a second current, and the difference between the first current and the second current is within a first preset range.

[0009] The embodiment of the present application adds an electric appliance, controls the electric appliance to be in different states under different conditions of the Bluetooth communication module, so that the power supply can output the first current and the second current with a difference within the first preset range in the corresponding state of the electric appliance, the power supply outputs the current more stably, the electromagnetic energy emitted by the power supply due to the large current fluctuation is reduced, and thus the noise of the Bluetooth device can be effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0011] Figure 1 The first structure schematic diagram of the Bluetooth device provided by the embodiment of the present application.

[0012] Figure 2 The timing control diagram provided by the embodiment of the present application.

[0013] Figure 3 The second structure schematic diagram of the Bluetooth device provided by the embodiment of the present application.

[0014] Figure 4 The third structure schematic diagram of the Bluetooth device provided by the embodiment of the present application.

[0015] Figure 5 The fourth structure schematic diagram of the Bluetooth device provided by the embodiment of the present application.

[0016] Figure 6 The fifth structure schematic diagram of the Bluetooth device provided by the embodiment of the present application.

[0017] Figure 7 The sixth structure schematic diagram of the Bluetooth device provided by the embodiment of the present application.

[0018] Figure 8 The application scenario diagram of the Bluetooth device provided by the embodiment of the present application.

[0019] Figure 9 The flow schematic diagram of the control method of the Bluetooth device provided by the embodiment of the present application.

[0020] Figure 10 The structure schematic diagram of the Bluetooth earphone provided by the embodiment of the present application. DETAILED DESCRIPTION

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0022] This application provides a Bluetooth device, which can be any device that uses Bluetooth technology. For example, a Bluetooth device can be a Bluetooth headset, Bluetooth speaker, Bluetooth mouse, Bluetooth watch, a Bluetooth-enabled cellular phone, a Bluetooth-enabled home appliance (such as a television, projector, rice cooker, etc.), or other products that use Bluetooth technology. The following description uses a Bluetooth headset as an example.

[0023] like Figure 1 As shown, Figure 1 This is a schematic diagram of a first structure of a Bluetooth device provided in an embodiment of this application. The Bluetooth device 20 may include a power supply 200, a Bluetooth communication module 400, and an electrical appliance 600. The power supply 200 can provide power for the operation of the Bluetooth communication module 400 and the electrical appliance 600; the Bluetooth communication module 400 can be used to transmit Bluetooth signals to interact with other devices through Bluetooth signals.

[0024] During Bluetooth communication, the Bluetooth communication module 400 may transmit Bluetooth signals intermittently. Power consumption increases when transmitting signals and decreases when not transmitting, potentially causing fluctuations in the power supply's output current. This is especially true during Bluetooth connection establishment, where frequent switching between transmitting and not transmitting signals generates a large electromagnetic field, emitting electromagnetic radiation. This radiation can interfere with other components of the Bluetooth device 20, particularly sensitive devices like speakers, producing noise such as hum and affecting the user experience.

[0025] It should be noted that the main sources of current noise are interference from electronic components to the speaker. These electronic components can be power inductors, batteries, etc. In this application, the power supply includes a battery, but it can also include a power management circuit, etc. Furthermore, the power management circuit can be integrated into the Bluetooth communication module or set up separately; there are no restrictions on this.

[0026] The embodiment of the present application adds the electric appliance 600 in the Bluetooth device 20 according to the actual situation. The electric appliance 600 can be any electric appliance, as long as the power supply 200 can output electric energy for it. For example, the electric appliance 600 can be a single resistor. Compared with the related art, the resistor is smaller in size, which can reduce the occupation of the internal space of the Bluetooth device 20 by the electric appliance 600, so that the Bluetooth device 20 can be more miniaturized. Of course, the electric appliance 600 can also be any circuit which can consume electric energy and is composed of one or more of resistors, inductors, capacitors, transistors, amplifiers or other electronic components.

[0027] The power supply 200 is configured to provide electric current for the Bluetooth communication module 400 and the electric appliance 600. When the Bluetooth communication module 400 transmits the Bluetooth signal, the electric appliance 600 is in the first state, and the power supply 200 outputs the first electric current. When the Bluetooth communication module 400 does not transmit the Bluetooth signal, the electric appliance 600 is in the second state, and the power supply 200 outputs the second electric current. The difference between the first electric current and the second electric current is within the first preset range.

[0028] The first preset range is a range set in advance, which can be set according to the electromagnetic radiation of the power supply 200 or the current sound, so that when the difference between the first electric current and the second electric current is within the first preset range, compared with the case where the electric appliance 600 is not set, the electromagnetic radiation of the power supply 200 can be reduced, thereby reducing the noise of the Bluetooth device 20.

[0029] In the embodiment of the present application, the power supply 200 can output electric current when transmitting the Bluetooth signal and when not transmitting the Bluetooth signal, and the output electric current is relatively stable, which can effectively reduce the electromagnetic field radiation intensity of the power supply 200.

[0030] For example, in the first state, the electrical appliance 600 is disconnected from the power supply 200, and the power supply 200 does not output current to the electrical appliance 600; in the second state, the electrical appliance 600 is connected to the power supply 200, and the power supply 200 outputs current to the electrical appliance 600. It can be understood that when the Bluetooth communication module 400 transmits a Bluetooth signal, the power supply 200 provides current to the Bluetooth communication module 400, but not to the electrical appliance 600; when the Bluetooth communication module 400 does not transmit a Bluetooth signal, the current consumed by the Bluetooth communication module 400 is less than when the Bluetooth communication module 400 transmits a Bluetooth signal, which causes the current output by the power supply 200 to fluctuate greatly, and the large fluctuation of the current causes the power supply 200 to emit a large electromagnetic radiation. However, in the embodiment of the present application, when the Bluetooth communication module 400 does not transmit a Bluetooth signal, the power supply 200 is kept connected to the electrical appliance 600, and the electrical appliance 600 consumes part of the current output by the power supply 200, thereby reducing the fluctuation of the current consumed by the Bluetooth communication module 400 when the Bluetooth communication module 400 does not transmit a Bluetooth signal, and reducing the electromagnetic radiation intensity of the power supply 200.

[0031] The value of the first current and the value of the second current can be equal, for example, in combination with Figure 2 For a detailed description, Figure 2 The timing control diagram provided by the embodiment of the present application is as follows: at 0-t1, the Bluetooth communication module 400 can transmit a Bluetooth signal, and the power supply 200 outputs power to the Bluetooth communication module 400, at this time the first current output by the power supply 200 is I1, and the electrical appliance 600 is disconnected from the power supply 200, at this time the current provided by the power supply 200 to the electrical appliance is 0 or a small value. At t1-t2, the Bluetooth communication module 400 can not transmit a Bluetooth signal, at this time the current provided by the power supply 200 to the Bluetooth communication module 400 is 0 or a small value. And the electrical appliance 600 is connected to the power supply 200, at this time the second current output by the power supply 200 is I2.

[0032] The first current I1 output by the power supply 200 in the embodiments of the present application can be equal to the second current I2 output by the power supply 200. Therefore, during the period of 0-t2, the power supply I2 consumed by the power supply 200 is equal to the first current I1, that is, the power supply 200 can stably output the current I3 within a preset period of time, and the power supply 200 will not generate a large electromagnetic radiation and cause a large noise, for example, current sound, due to the output of current in some periods and the absence of current in some periods. It can be understood that, by adding the electric appliance 600 and controlling the electric appliance 600 to be in different states under different conditions of the Bluetooth communication module 400, the power supply 200 can output the first current and the second current with a difference within the first preset range in the states corresponding to the electric appliance 600, respectively, so that the electromagnetic field radiation intensity of the power supply 200 in the Bluetooth device 20 can be effectively reduced, thereby reducing or avoiding the noise caused by the fluctuation of the output current of the power supply and affecting the use of the user. It should be noted that 0-t1 and t1-t2 are only two time periods intercepted from the time sequence for specific description, and the operations of the remaining two adjacent times are the same as those of the two time periods of 0-t1 and t1-t2.

[0033] It should also be noted that, in the first state, the first current I1 consumed by the power supply 200 can also be different from the second current I2 consumed by the power supply 200 in the second state, for example, the first current I1 can be less than or greater than the second current I2, at which time the power supply 200 emits a part of electromagnetic radiation, however, by controlling the difference between the first current I1 and the second current I2, the first current I1 and the second current I2 can be within the first preset range, and the electromagnetic radiation of the power supply 200 can be controlled at a lower level. However, if the first current I1 consumed by the power supply 200 is equal to the second current I2 consumed by the power supply 200, the control effect of the electromagnetic radiation of the power supply 200 is better.

[0034] It can be understood that the equal first current and second current is a more ideal state, and in actual application, the difference between the first current and the second current output by the power supply in the case of emitting a Bluetooth signal and not emitting a Bluetooth signal can be controlled within the first preset range (including the case that the first current is equal to the second current and the case that the first current is not equal to the second current) by the electric appliance, for example, by experiment, it is determined that the fluctuation of the output current of the power supply within a certain range will not cause the Bluetooth device (such as Bluetooth earphone) to generate noise (such as current sound) or generate noise less than a preset threshold, so as not to affect the use of the user, for example, the current sound is not enough for the user to perceive, so that the certain range can be used as the first preset range, or the first preset range can be determined according to the certain range.

[0035] It should be noted that the relationship between the power supply 200 and the electrical appliance 600 is not limited to this. For example, in the first state, the power supply 200 can output a third current to the electrical appliance 600, and in the second state, the power supply 200 outputs a fourth current to the electrical appliance 600, so that the difference between the first current and the second current is within the first preset range. It can be understood that when the Bluetooth communication module 400 transmits a Bluetooth signal and does not transmit a Bluetooth signal, the power supply 200 and the electrical appliance 600 are always turned on, so that the power supply 200 outputs a current to the electrical appliance 600 in both states, and the value of the current output in the two states (i.e. the value of the third current and the fourth current) can be controlled to make the difference between the first current output by the power supply 200 in the first state and the second current output by the power supply 200 in the second state within the first preset range, so as to achieve the purpose of reducing the electromagnetic radiation intensity of the power supply 200.

[0036] In the embodiments of the present application, the control relationship between the power supply 200, the Bluetooth communication module 400 and the electrical appliance 600 can be physically controlled by switches or other hardware, or the power supply 200 can always maintain electrical connection with the Bluetooth communication module 400 and the electrical appliance 600 on the hardware, and then control the power supply 200 to supply power or not to supply power to the Bluetooth communication module 400 and / or control the power supply 200 to supply power or not to supply power to the electrical appliance 600 by software or other means.

[0037] In the embodiments of the present application, the Bluetooth signal described above can be a signal transmitted by the Bluetooth communication module 400 in part or all of the process of establishing a Bluetooth connection. The establishment of a Bluetooth connection can be the first connection with other Bluetooth devices, reestablishment of a Bluetooth connection (back connection) with a certain Bluetooth device, or a connection process after the Bluetooth connection information is erased and then paired. Generally, in the process of establishing a Bluetooth connection, the Bluetooth device can be in a paging page, paging scan page scan, inquiry inquiry, inquiry scan inquiry scan state, and can switch between different states. The inventors have found that, especially when in the paging or inquiry state, the Bluetooth signal, such as an ID packet, needs to be transmitted in each frequency band according to the Bluetooth frequency hopping protocol, and feedback is waited for, so that the alternation of transmitting and not transmitting the Bluetooth signal becomes more frequent, and the fluctuation of the power output current caused thereby increases, which can cause a large electromagnetic field of the battery, inductor and other electronic devices, thereby interfering with sensitive devices such as the loudspeaker to generate current sound and other noises. Taking a Bluetooth earphone as an example, if the Bluetooth connection is suddenly disconnected during use by the user, the master earphone of the Bluetooth earphone will enter the paging state to attempt to back connect the mobile phone. In the paging state, due to the frequent transmission of ID packets and waiting for feedback, the power output current changes greatly and frequently, and the battery and power inductor and other devices can generate a large electromagnetic field, thereby interfering with the loudspeaker and other devices to generate current sound. Therefore, the Bluetooth signal can be transmitted in part or all of the process of establishing a Bluetooth connection, for example, only in the paging and inquiry states, or in all Bluetooth states, or from starting the Bluetooth connection to establishing a synchronous or asynchronous transmission link, or even including the pairing process, and the specific process can refer to the Bluetooth protocol, which is not limited herein.

[0038] When the Bluetooth communication module 400 completes the Bluetooth connection, the electric appliance 600 can be kept in the third state, so that the power supply 200 does not output current to the electric appliance 600 or outputs the seventh current to the electric appliance 600, so that the Bluetooth communication module 400 does not consume or consumes less electric energy in the connected state, controls the output current of the power supply 200, and reduces the current sound caused thereby. As shown in Figure 3 Figure 3 ​A second structure diagram of a Bluetooth device is provided in the embodiments of the present application. The Bluetooth communication module 400 can include a Bluetooth circuit 420 and an antenna radiator 440, the Bluetooth circuit 420 is configured to control the antenna radiator 440, the power supply 200 and the electrical appliance 600. For example, the Bluetooth circuit 420 can control the antenna radiator 440 by direct or indirect electrical connection, such as controlling the antenna radiator 440 to emit a Bluetooth signal, or controlling the antenna radiator 440 not to emit a Bluetooth signal. The Bluetooth circuit 420 can control the power supply 200 by direct or indirect electrical connection, such as controlling the power supply 200 to supply power or not to supply power to various devices, and the current of the power supply.

[0039] The Bluetooth circuit 420 can be integrated into one chip, or different parts of the Bluetooth circuit 420 can be integrated into different chips or other packaging structures. Figure 4 As shown in FIG. 4B, Figure 4 A third structure diagram of a Bluetooth device is provided in the embodiments of the present application. The Bluetooth circuit 420 can include a Bluetooth master circuit 422 and a radio frequency circuit 424. The Bluetooth master circuit 422 is the master control center of the Bluetooth function. The Bluetooth master circuit 422 can control the radio frequency circuit 424 by direct or indirect electrical connection. The radio frequency circuit 424 can be directly or indirectly electrically connected with the antenna radiator 440. The Bluetooth master circuit 422 can control the antenna radiator 440 through the radio frequency circuit 424. The radio frequency circuit 420 can include a radio frequency transceiver module and a modulation and demodulation module. The radio frequency transceiver module can be used for transmitting and receiving radio frequency signals. The modulation and demodulation module can be used for processing radio frequency signals to realize signal modulation and demodulation. The antenna radiator 440 can be arranged on the outer surface of the Bluetooth device 20, or arranged inside the Bluetooth device 20. The antenna radiator 440 can be used for transmitting radio frequency signals. The radio frequency signals can include Bluetooth signals, or other signals, so that one antenna radiator 440 can transmit two or more signals at the same time.

[0040] The Bluetooth circuit 420 can be configured to control the electrical appliance 600 to be connected with the power supply 200. For example, as shown in FIG. 4C, Figure 5 As shown in FIG. 4C, Figure 5A fourth structure diagram of a Bluetooth device is provided in the embodiments of the present application. The Bluetooth device 20 can include a first switch 920 and a second switch 940, which are single-pole single-throw switches. The Bluetooth master circuit 422 is electrically connected with a power supply 200, which can provide power for the Bluetooth master circuit 422. The Bluetooth master circuit 422 is electrically connected with the radio frequency circuit 424 through the first switch 920, and the Bluetooth master circuit 422 can control the state of the radio frequency circuit 424 by controlling the closing or opening of the first switch 920. The Bluetooth master circuit 422 is electrically connected with the electrical appliance 600 through the second switch 940, and the Bluetooth master circuit 422 can control the state of the radio frequency circuit 424 by controlling the closing or opening of the second switch 940.

[0041] For example, the first switch 920 can have a first port and a second port, the first port can be connected with the radio frequency circuit 424, and the second port can be connected with the Bluetooth master circuit 422. The Bluetooth master circuit 422 can control the radio frequency circuit 424 to be connected with the Bluetooth master circuit 422 by controlling the connection of the first port and the second port, so as to control the radio frequency circuit 424 to cooperate with the antenna radiator 440 to emit the Bluetooth signal; the Bluetooth master circuit 422 can control the radio frequency circuit 422 to not emit the Bluetooth signal by controlling the disconnection of the first port and the second port.

[0042] Of course, the Bluetooth master circuit 422 can also keep the first switch 920 closed, and control the radio frequency circuit 424 and / or the antenna radiator 440 not to work by software or other ways, so as to achieve the purpose of not emitting the Bluetooth signal.

[0043] The second switch 940 can have a third port and a fourth port, the third port can be connected with the Bluetooth master circuit 422, and the fourth port can be connected with the electrical appliance 600. The Bluetooth master circuit 422 can control the electrical appliance 600 to be conducted through the Bluetooth master circuit 422 and the power supply 200 by controlling the connection of the third port and the fourth port, so as to make the power supply 200 output current to the electrical appliance 600. The Bluetooth master circuit 422 can control the power supply 200 and the electrical appliance 600 not to be conducted by controlling the disconnection of the third port and the fourth port, so as to achieve the purpose that the electrical appliance 600 does not consume the power of the power supply 200.

[0044] Of course, the Bluetooth master circuit 422 can also keep the second switch 940 closed, and control the electrical appliance 600 not to consume power or consume less power by software or other ways.

[0045] The Bluetooth master control circuit 422 of the embodiment of the present application can control the state of the first switch 920 and the second switch 940, thereby realizing the control of the signal transmission state of the radio frequency circuit 424 and / or the antenna radiator 440 and the electric energy consumption state of the electric appliance 600. For example, the Bluetooth master control circuit 422 can be configured to control the first switch 920 to be closed and the second switch 940 to be opened, and the Bluetooth master control circuit 422 can also be configured to control the first switch 920 to be opened and the second switch 940 to be closed. When the first switch 920 is closed and the second switch 940 is opened, the radio frequency circuit 424 and the antenna radiator 440 can be in the working state to transmit the Bluetooth signal, and the electric appliance 600 does not consume electric energy. When the first switch 920 is opened and the second switch 940 is closed, the radio frequency circuit 424 and the antenna radiator 440 can be in the idle state to not transmit the Bluetooth signal, and the electric appliance 600 consumes electric energy.

[0046] wherein, Figure 5 One or both of the first switch 920 and the second switch 940 shown can be integrated with the Bluetooth communication module 400 as one processing chip, or the Bluetooth communication module 400 can be separately integrated with one processing chip, and the first switch 920 and the second switch 940 are externally connected to the processing chip. Moreover, the Bluetooth communication module 400 of the embodiment of the present application can directly use the Bluetooth chip in the Bluetooth device, or the Bluetooth communication module 400 can be realized by additionally adding a processing chip or a processing circuit.

[0047] It should be noted that the structure of the Bluetooth device 20 of the embodiment of the present application is not limited to this, for example, as shown in Figure 6 Figure 6 ​A fifth structure diagram of the Bluetooth device is provided in the embodiments of the present application. The Bluetooth device 20 can include only one switch, for example, the Bluetooth device 20 can include only the first switch 920, and the first switch 920 can be a single-pole double-throw switch. The first switch 920 can include an input end 920a, a first output end 920b and a second output end 920c. The input end 920a is connected with the Bluetooth master circuit 422, the first output end 920b is connected with the radio frequency circuit 424, and the second output end 920c is connected with the electrical appliance 600. The Bluetooth master circuit 422 can control the radio frequency circuit 424 to be in a working state by controlling the connection between the input end 920a and the first output end 920b, so as to emit the Bluetooth signal together with the antenna radiator 440. At this time, the input end 920a and the second output end 920c are not connected, so that the electrical appliance 600 does not consume the power of the power supply 200. The first output end 920b is connected with the radio frequency circuit 424, and the second output end 920c is connected with the electrical appliance 600. The Bluetooth master circuit 422 can also control the power supply 200 to output power to the electrical appliance 600 by controlling the connection between the input end 920a and the second output end 920c. At this time, the input end 920a and the first output end 920b are not connected, so that the radio frequency circuit 424 is in an idle state and does not emit the Bluetooth signal.

[0048] In the embodiments of the present application, Figure 6 The first switch 920 shown in the figure can be integrated with the Bluetooth communication module 400 into one processing chip, or the Bluetooth communication module 400 can be separately integrated into one processing chip, and the first switch 920 is externally connected to the processing chip.

[0049] In other embodiments, the power supply 200 can also not be controlled by the Bluetooth circuit 420. Instead, the power supply 200 can control the current output of the power supply 200 according to the communication condition of the Bluetooth circuit 420. For example, the power supply 200 can not provide current or provide a first set current to the electrical appliance 600 when it is learned that the Bluetooth circuit 420 emits the Bluetooth signal, and provide a second set current to the electrical appliance 600 when it is learned that the Bluetooth circuit 420 does not emit the Bluetooth signal, so that the current output by the power supply 200 is within the first preset range during the establishment of the Bluetooth.

[0050] As shown in the figure, Figure 7 As shown in the figure, Figure 7 A sixth structure diagram of the Bluetooth device is provided in the embodiments of the present application. The Bluetooth device 20 can also include a sound module 800, which can be used to transmit sound signals. For example, the sound module 800 can include a sound emitting module and / or a sound collecting module. The sound emitting module can convert electrical signals into sound signals, such as a loudspeaker. The sound collecting device can convert sound signals into electrical signals, such as a microphone.

[0051] It can be understood that the sound module 800 in the embodiment of the present application can only include a sound emitting module, such as when the Bluetooth device 20 is a Bluetooth speaker, the sound module 800 thereof can only include a loudspeaker and does not include a microphone. The sound module 800 can also only include a sound collecting module, such as when the Bluetooth device 20 is a Bluetooth recording device, the sound module 800 thereof can only include a microphone and does not include a loudspeaker. The sound module 800 can also include both a sound emitting module and a sound collecting module, such as when the Bluetooth device 20 is a wireless Bluetooth earphone, the wireless Bluetooth earphone can both emit a sound signal and convert the sound signal into an electrical signal for transmission to other devices.

[0052] The sound module 800 can be connected with the Bluetooth communication module 400 to play or collect a sound signal. For example, the Bluetooth circuit 420 can be directly or indirectly connected with the sound module 800, which can collect and / or play a sound signal through the sound module 800. When the sound module 800 transmits a sound signal, it is easily affected by electromagnetic radiation of surrounding devices, such as the power supply 200, to generate electromagnetic noise, which makes the user's listening experience poor. The low electromagnetic radiation intensity of the power supply 200 in the embodiment of the present application can reduce the influence of electromagnetic radiation on the sound module 800, thereby reducing the electromagnetic noise of the sound signal transmitted by the sound module 800, thereby improving the user experience.

[0053] In the embodiment of the present application, the Bluetooth device 20 described above can be a Bluetooth earphone 40 as shown in Figure 8 The preset device can be a mobile terminal 60 (smartphone) as shown in Figure 8 The user can transmit a Bluetooth signal through the control of the Bluetooth earphone 40, and establish a wireless connection with the mobile terminal 60 through the Bluetooth signal, so that the Bluetooth earphone 40 can interact with the mobile terminal 60 (such as the mobile terminal 60 can play audio through the Bluetooth earphone 40, or make a call through the Bluetooth earphone 40, etc.).

[0054] It can be understood that when the Bluetooth device 20 is a Bluetooth earphone, the Bluetooth earphone further includes a wearing detection module (not shown), for example, a capacitive sensor, which can be connected with the Bluetooth communication module 400 and can send wearing state information to the Bluetooth communication module or store it in the storage module for the Bluetooth communication module 400 to obtain. When the Bluetooth earphone is in a wearing state, the use of the electric appliance 600 will be controlled by the above-mentioned method to control the noise (such as current sound) so as to protect the user's use while controlling the power consumption.

[0055] In order to further understand the specific implementation process of the embodiment of the present application, the following is described from the perspective of the control method of the Bluetooth device.

[0056] As shown in Figure 9 As shown in Figure 9The flowchart of the control method of the Bluetooth device provided by the embodiment of the present application is shown in the figure. The control method of the Bluetooth device 20 of the above embodiment comprises the following steps:

[0057] 101. When the Bluetooth signal is transmitted, the electrical appliance 600 is controlled to be in a first state, and the power supply 200 outputs a first current.

[0058] 102. When the Bluetooth signal is not transmitted, the electrical appliance 600 is controlled to be in a second state, and the power supply 200 outputs a second current, and the difference between the second current and the first current is within a first preset range.

[0059] The Bluetooth device 20 can control the electrical appliance 600 according to the transmission state of the Bluetooth signal. The specific control module can be the Bluetooth communication module 400 described in the above embodiment, or other control modules such as other processing chips or other control circuits in the Bluetooth device 20, and is not limited to the Bluetooth communication module 400 described in the above embodiment. The transmission state of the Bluetooth signal can be detected and acquired by the Bluetooth communication module 400 of the above embodiment, or acquired by other modules (such as other modules independent of the Bluetooth communication module 400) and then sent to the Bluetooth communication module 400. When the Bluetooth device 20 knows that the Bluetooth signal is transmitted, the electrical appliance 600 is controlled to be in a first state, and at this time the power supply 200 can output a first current. When the Bluetooth device 20 knows that the Bluetooth signal is not transmitted, the electrical appliance 600 is controlled to be in a second state, and at this time the power supply 200 can output a second current, and the difference between the second current and the first current is within a first preset range. The specific description of the first state, the first current and the first preset range can be referred to the related description of the above embodiment, and will not be repeated here.

[0060] In the step 101, the electrical appliance 600 can be controlled to be disconnected from the power supply 200 or the power supply 200 can be controlled to output a third current to the electrical appliance 600 when the Bluetooth signal is transmitted.

[0061] In the step 102, the electrical appliance 600 can be controlled to be kept connected with the power supply 200 or the power supply 200 can be controlled to output a fourth current to the electrical appliance 600 when the Bluetooth signal is not transmitted.

[0062] The Bluetooth device 20 can control the states of the electrical appliance 600 and the power supply 200 through hardware control. The hardware control method can be referred to the description of the above embodiment. Figure 5 And Figure 6 Of course, the Bluetooth device 20 can also control the states of the electrical appliance 600 and the power supply 200 through software control. The specific description can be referred to the related description of the above embodiment.

[0063] Step 102 can further include: 103, after the Bluetooth connection is completed, keeping the electric appliance in the third state so that the power supply does not output current or outputs the seventh current to the electric appliance.

[0064] In the embodiments of the present application, the Bluetooth connection described above includes part or all of the process of establishing a Bluetooth connection. Among them, establishing a Bluetooth connection can be the first connection with other Bluetooth devices, or re-establishing a Bluetooth connection with a certain Bluetooth device (back connection), or a connection process of re-pairing after the Bluetooth connection information is erased. Generally speaking, during the process of establishing a Bluetooth connection, the Bluetooth device can be in a paging page, paging scan page scan, inquiry inquiry, inquiry scan inquiry scan state, and can switch between different states. The inventors have found that, especially when in the paging or inquiry state, it is necessary to transmit Bluetooth signals such as ID packets according to the Bluetooth frequency hopping protocol in each frequency band and wait for feedback, so that the alternation of transmitting Bluetooth signals and not transmitting Bluetooth signals becomes more frequent, thereby increasing the fluctuation of the power supply output current, which can cause the battery, inductor and other electronic devices to generate a larger electromagnetic field, thereby interfering with sensitive devices such as loudspeakers to generate current sound noise. For example, if the Bluetooth connection is suddenly disconnected during user use, the master earphone of the Bluetooth earphone will enter the paging state to try to back connect the mobile phone. In the paging state, due to the frequent transmission of ID packets and feedback waiting, the power supply output current changes greatly and frequently, and the battery and power inductor can generate a larger electromagnetic field, thereby interfering with the loudspeaker to generate current sound. Therefore, during part or all of the process of establishing a Bluetooth connection, for example, only in the paging and inquiry states, or in all Bluetooth states, or from starting the Bluetooth connection to establishing a synchronous or asynchronous transmission link, or even including the pairing process, the specific can refer to the Bluetooth protocol, which is not limited here.

[0065] After completing the above-mentioned part or all of the process of establishing a Bluetooth connection, the Bluetooth device 20 can control the electric appliance 600 to be in the third state, so that the power supply 200 does not output current or outputs the seventh current to the electric appliance 600, so that the Bluetooth device 20 is in a connected state, and the electric appliance 600 does not consume or consumes less power, controls the output current of the power supply 200, and reduces the current sound caused thereby.

[0066] It can be understood that when the Bluetooth device 20 is a Bluetooth earphone, the above steps can be executed after determining the wearing state of the Bluetooth earphone first. When the Bluetooth earphone is in the wearing state, the above steps 101, 102, etc. are executed, which can save a certain power consumption.

[0067] The embodiment of the present application further provides a computer readable storage medium, which stores a computer program. When the computer program is executed on a computer, the computer program makes the computer execute the steps in the control method of the Bluetooth device provided by the embodiment. For example, the computer program can be stored in a memory and executed by at least one processor. During the execution, the computer program can include the flow of the embodiment of the control method of the Bluetooth device. The storage medium can be a disk, an optical disk, a read-only memory (ROM), a random access memory (RAM) or the like.

[0068] The embodiment of the present application further provides another Bluetooth earphone. Figure 10 As shown in the figure, Figure 10 The Bluetooth earphone 40 can include a Bluetooth communication module 41, a power supply 42, an electrical appliance 43 and a loudspeaker 44. The power supply 42 is configured to provide current for the Bluetooth communication module 41, the electrical appliance 43 and the loudspeaker 44. During the process of establishing a Bluetooth connection by the Bluetooth communication module 41, the current output by the power supply 42 is controlled within a second preset range by the electrical appliance 43. The process of establishing a Bluetooth connection can include a reconnection process and a pairing process, or only include the reconnection process or the pairing process. The second preset range is a preset range, which can be set according to the electromagnetic noise generated by the loudspeaker 44. When the current output by the power supply 42 is within the second preset range, the electromagnetic noise generated by the loudspeaker 44 is within a preset interval, thereby improving the auditory experience of the user. The second preset range can be the same as the first preset range or different from the first preset range.

[0069] For example, when the current output by the power supply 42 is controlled within the second preset range, the equivalent magnetic field generated by the power supply 42 is within a third preset range with respect to the noise generated by the loudspeaker 44. The third preset range is a preset range. When the equivalent magnetic field generated by the power supply 42 is within the third preset range with respect to the noise generated by the loudspeaker 44, the noise can be at a level that is not perceived by the user. For example, the noise can be controlled within a range below the decibel that can be heard by the user's ear.

[0070] In the process of the Bluetooth communication module 41 establishing the Bluetooth connection, the current output by the power supply 42 is controlled within the second preset range by the use electric appliance 43, which can include: when the Bluetooth communication module 41 transmits the Bluetooth signal, the power supply 42 does not provide the use electric appliance 43 with current, and when the Bluetooth communication module 41 does not transmit the Bluetooth signal, the power supply 42 provides the use electric appliance 43 with preset current. It can be understood that when the Bluetooth communication module 41 transmits the Bluetooth signal, the power supply 42 provides current for the Bluetooth communication module 41, but not for the use electric appliance 43; when the Bluetooth communication module 41 does not transmit the Bluetooth signal, the Bluetooth communication module 41 consumes less current from the power supply 42 than when it transmits the Bluetooth signal, which causes the current output by the power supply 42 to have greater jitter, and the large current jitter amplitude causes the power supply 200 to emit greater electromagnetic radiation. However, the embodiment of the present application keeps the power supply 200 and the use electric appliance 43 connected when the Bluetooth communication module 41 does not transmit the Bluetooth signal, and the use electric appliance 43 can consume part of the current from the power supply 42, thereby reducing the current consumption amplitude when the Bluetooth communication module 41 does not transmit the Bluetooth signal, and further reducing the electromagnetic radiation intensity of the power supply 200.

[0071] For example, in the process of the Bluetooth communication module 41 establishing the Bluetooth connection, the current output by the power supply 42 is controlled within the second preset range by the use electric appliance 43, which can include: when the Bluetooth communication module 41 transmits the Bluetooth signal, the power supply 42 provides the use electric appliance 43 with a fifth current, and when the Bluetooth communication module 41 does not transmit the Bluetooth signal, the power supply 42 provides the use electric appliance 43 with a sixth current. It can be understood that the power supply 42 and the use electric appliance 43 are always connected when the Bluetooth communication module 41 transmits the Bluetooth signal and does not transmit the Bluetooth signal, so that the power supply 42 outputs current to the use electric appliance 43 in both states, and the noise generated by the electromagnetic field of the power supply 42 interfering with the loudspeaker 44 is within a third preset range by controlling the values of the currents output in the two states (i.e., the values of the fifth current and the sixth current), thereby reducing the electromagnetic noise generated by the loudspeaker 44. It should be noted that the value of the fifth current can be the same as or different from the values of the first current and the third current in the above embodiment; the value of the sixth current can be the same as or different from the values of the second current and the fourth current in the above embodiment.

[0072] In the embodiment of the present application, the power supply 42 can be configured to control the speaker 44 to generate the noise by keeping the current output by the power supply 42 constant through the appliance 43 during all or part of the process of establishing the Bluetooth connection by the Bluetooth communication module 41. For example, the value of the fifth current can be equal to the value of the sixth current, and of course, the constant can also be understood as a small amplitude fluctuation, so that the power supply 42 can stably output current within a preset period of time, at which time the power supply 42 will not generate electromagnetic radiation, or the electromagnetic radiation generated can be negligible, thereby reducing the current sound to improve the effect of the sound signal transmitted by the speaker 44.

[0073] In the embodiment of the present application, the Bluetooth signal described above is the signal transmitted by the Bluetooth communication module 41 during part or all of the process of establishing the Bluetooth connection. The process of establishing the Bluetooth connection can include the reconnection process and the pairing process, or can only include the reconnection process or the pairing process. When the Bluetooth communication module 41 completes the Bluetooth connection, generally, due to the relative continuity of the transmitted Bluetooth signal and other reasons, the fluctuation of the power supply output current is relatively weak, the electromagnetic field generated by the power supply is also relatively weak, and the interference to the speaker and other devices is also relatively low, thereby causing the current sound to be weak. At this time, the power supply 42 can be kept from outputting current to the appliance 43, so that the Bluetooth communication module 41 is in a connected state, the appliance 43 does not consume power, and the power consumption of the power supply 42 is reduced.

[0074] The power supply 42 keeping from providing current to the appliance 43 includes disconnecting the power supply 42 from the appliance 43, and of course, other ways such as control through a power management circuit can also be used.

[0075] The specific structure of the Bluetooth communication module 41 in the embodiment of the present application and the relationship with other devices can be the same as the Bluetooth communication module 400 in the above application embodiment, and the specific description of the Bluetooth communication module 400 in the above application embodiment can be referred to, and will not be repeated here.

[0076] The Bluetooth device and Bluetooth earphone provided by the embodiment of the present application are described in detail. The principle and implementation manner of the present application are described by applying specific examples in this paper, and the above embodiment is only used to help understand the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manner and application range will be changed, and the above description should not be understood as a limitation of the present application.

Claims

1. A Bluetooth device, characterized in that, The Bluetooth device comprises a Bluetooth communication module, a power supply and an electrical appliance, the power supply is configured to provide current for the Bluetooth communication module and the electrical appliance, when the Bluetooth communication module transmits a Bluetooth signal, the electrical appliance is in a first state, and the power supply outputs a first current; When the Bluetooth communication module does not transmit the Bluetooth signal, the electrical appliance is in a second state, and the power supply outputs a second current; the difference between the first current and the second current is within a first preset range; wherein the Bluetooth signal is a signal transmitted by the Bluetooth communication module in a part or all of a process of establishing a Bluetooth connection for the Bluetooth communication module.

2. The Bluetooth device of claim 1, wherein, In the first state, the electrical appliance is disconnected from the power supply; in the second state, the electrical appliance remains connected to the power supply.

3. The Bluetooth device of claim 1, wherein, In the first state, the power supply outputs a third current to the electrical appliance, and in the second state, the power supply outputs a fourth current to the electrical appliance, so that the difference between the first current and the second current is within the first preset range.

4. The Bluetooth device of claim 1, wherein when the Bluetooth device is a Bluetooth earphone, the Bluetooth earphone comprises a wearing detection module connected to the Bluetooth communication module, the wearing detection module is configured to send wearing state information to the Bluetooth communication module, or is configured to store wearing state information in a storage module for the Bluetooth communication module to obtain; and / or when the Bluetooth earphone is in a wearing state, the electrical appliance is used.

5. The Bluetooth device of claim 2, wherein, The first current is equal to the second current.

6. The Bluetooth device according to any one of claims 1 to 5, characterized in that, The power supply is configured to keep the electrical appliance in a third state after the Bluetooth communication module completes the Bluetooth connection, so that the power supply does not output current or outputs a seventh current to the electrical appliance.

7. The Bluetooth device of claim 1, wherein, The Bluetooth device comprises a sound module, if the Bluetooth device is a Bluetooth earphone, the sound module comprises a loudspeaker connected to the Bluetooth communication module, and the loudspeaker is configured to play a sound signal.

8. The Bluetooth device of claim 7, wherein, The Bluetooth communication module comprises a Bluetooth circuit and an antenna radiator, the Bluetooth circuit is electrically connected to the antenna radiator, the power supply, the electrical appliance and the loudspeaker respectively.

9. The Bluetooth device of claim 8, wherein, The Bluetooth circuit is configured to control the connection of the electrical appliance and the power supply; or the power supply controls the current output of the power supply according to the communication condition of the Bluetooth circuit.

10. The Bluetooth device of claim 8, wherein, The Bluetooth circuit comprises a Bluetooth master control circuit and a radio frequency circuit, the Bluetooth master control circuit is electrically connected to the power supply; the Bluetooth master control circuit is also connected to the electrical appliance to control the current consumption of the electrical appliance; the Bluetooth master control circuit is connected to the antenna radiator through the radio frequency circuit to receive and transmit Bluetooth signals through the radio frequency circuit and the antenna radiator.

11. The Bluetooth device of claim 10, wherein, The Bluetooth device comprises a first switch and a second switch; the Bluetooth master circuit is electrically connected with the radio frequency circuit through the first switch, and the Bluetooth master circuit realizes the state control of the radio frequency circuit by controlling the closing or opening of the first switch; the Bluetooth master circuit is electrically connected with the electric appliance through the second switch, and the Bluetooth master circuit realizes the state control of the radio frequency circuit by controlling the closing or opening of the second switch; The first switch has a first port and a second port, the first port is connected with the radio frequency circuit, and the second port is connected with the Bluetooth master circuit; the Bluetooth master circuit controls the radio frequency circuit and the Bluetooth master circuit to be in communication by controlling the communication of the first port and the second port, so as to control the radio frequency circuit to cooperate with the antenna radiator to emit the Bluetooth signal; the Bluetooth master circuit controls the radio frequency circuit and the antenna radiator not to emit the Bluetooth signal by controlling the disconnection of the first port and the second port; And / or, The second switch has a third port and a fourth port, the third port is connected with the Bluetooth master circuit, and the fourth port is connected with the electric appliance; the Bluetooth master circuit controls the electric appliance to be turned on through the Bluetooth master circuit and the power supply by controlling the communication of the third port and the fourth port, so as to make the power supply output current for the electric appliance; the Bluetooth master circuit controls the power supply and the electric appliance not to be turned on by controlling the disconnection of the third port and the fourth port; Or, the Bluetooth device comprises a first switch, the first switch comprises an input end, a first output end and a second output end, the input end is connected with the Bluetooth master circuit, the first output end is connected with the radio frequency circuit, and the second output end is connected with the electric appliance; The Bluetooth master circuit controls the radio frequency circuit to be in working state and emit the Bluetooth signal together with the antenna radiator by controlling the communication of the input end and the first output end, and the input end and the second output end are not connected so that the electric appliance does not consume the power of the power supply; The first output end is connected with the radio frequency circuit, and the second output end is connected with the electric appliance; The Bluetooth master circuit also controls the power supply to output power for the electric appliance by controlling the communication of the input end and the second output end, and the input end and the first output end are not connected so that the radio frequency circuit is in idle state and does not emit the Bluetooth signal.

12. A Bluetooth earpiece, characterized in that, The Bluetooth device includes a Bluetooth communication module, a power supply, an electrical appliance and a speaker, the power supply is configured to provide current for the Bluetooth communication module, the electrical appliance and the speaker, and during the whole or part of the process of establishing a Bluetooth connection by the Bluetooth communication module, the power supply does not provide current for the electrical appliance or provides a fourth current for the electrical appliance when the Bluetooth communication module transmits a Bluetooth signal, and the power supply provides a preset current for the electrical appliance when the Bluetooth communication module does not transmit a Bluetooth signal, so that the current output by the power supply is controlled within a second preset range; when the current output by the power supply is controlled within the second preset range, the noise generated by the Bluetooth earphone is within a third preset range.

13. The Bluetooth headset of claim 12, wherein, The power supply is configured to control the noise generated by the Bluetooth earphone by outputting a constant current to the electrical appliance during the whole or part of the process of establishing a Bluetooth connection by the Bluetooth communication module.

14. The Bluetooth earpiece of claim 12 or 13, wherein, The power supply is configured to keep the power supply from providing current to the electrical appliance after the Bluetooth communication module completes the Bluetooth connection.

15. The Bluetooth headset of claim 14, wherein, The power supply is configured to keep the power supply from providing current to the electrical appliance after the Bluetooth communication module completes the Bluetooth connection.

16. A control method of a Bluetooth device, characterized by, The Bluetooth device includes a power supply and an electrical appliance, and the method includes: When transmitting a Bluetooth signal, controlling the electrical appliance to be in a first state, and the power supply outputs a first current; When not transmitting a Bluetooth signal, controlling the electrical appliance to be in a second state, and the power supply outputs a second current, the difference between the first current and the second current being within a first preset range.

17. The method of claim 16, wherein, When the Bluetooth device is a Bluetooth earphone, the Bluetooth earphone includes a wearing detection module connected with the Bluetooth communication module; when the Bluetooth device is a Bluetooth earphone, the method further includes: When the Bluetooth earphone is in a wearing state, the electrical appliance is used; and / or When the Bluetooth earphone is in a wearing state and transmits the Bluetooth signal, controlling the electrical appliance to be in the first state, and the power supply outputs the first current. When the Bluetooth device is a Bluetooth earphone, the Bluetooth earphone includes a wearing detection module connected with the Bluetooth communication module; when the Bluetooth device is a Bluetooth earphone, the method further includes: When the Bluetooth earphone is in a wearing state, the electrical appliance is used; and / or When the Bluetooth earphone is in a wearing state and transmits the Bluetooth signal, controlling the electrical appliance to be in the first state, and the power supply outputs the first current.

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