Bluetooth audio connector and Bluetooth earphone

Abstract

The invention relates to the technical field of electronic equipment, and particularly provides a Bluetooth audio connector and a Bluetooth earphone. A Bluetooth audio connector comprises a male seat terminal, a female seat terminal, a controller and a charging protocol circuit, a power supply pin of the male seat terminal is connected with a power supply pin of the female seat terminal, a power supply input pin of the controller is respectively connected with the female seat terminal and the power supply pin of the male seat terminal, and an audio signal pin is connected with a data signal pin of the male seat terminal. The power supply end of the charging protocol circuit is connected with the power supply pin of the female seat terminal, the protocol receiving end is connected with the female seat terminal, the protocol transmitting end is connected with the male seat terminal, and the protocol conversion circuit is used for forwarding charging protocol information of the main equipment and the power adapter. In the embodiment of the invention, quick charging protocol interaction between the power adapter and the main equipment is realized through the charging protocol circuit, so that quick charging of the main equipment can be realized in a scene of switching charging of the Bluetooth audio connector, the charging efficiency of the main equipment is improved, and the user experience is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electronic equipment, and in particular to a Bluetooth audio connector and a Bluetooth headset. Background Art

[0002] Bluetooth Dongle accessories can enable Bluetooth devices to establish Bluetooth connections with various electronic devices and realize Bluetooth audio transmission. At present, some TWS (true wireless stereo) will be equipped with corresponding Dongle accessories to achieve low-latency and high-quality audio transmission with mobile phones. However, Dongle accessories will occupy the charging port of the mobile phone, thus affecting the charging of the mobile phone. Summary of the invention

[0003] In order to solve the problem of slow charging efficiency of electronic devices when charging via a dongle accessory, the disclosed embodiments provide a Bluetooth audio connector and a Bluetooth headset.

[0004] In a first aspect, an embodiment of the present disclosure provides a Bluetooth audio connector, comprising:

[0005] A male terminal and a female terminal, the male terminal is used to connect to a main device, the female terminal is used to connect to a power adapter, and the power pin of the male terminal is connected to the power pin of the female terminal;

[0006] A controller, comprising a power input pin and an audio signal pin, wherein the power input pin is connected to the power pin of the female terminal and the power pin of the male terminal respectively, and the audio signal pin is connected to the data signal pin of the male terminal, and the controller is used to send the audio data received through the audio signal pin to the slave device via Bluetooth; and

[0007] The charging protocol circuit includes a power supply end, a protocol receiving end and a protocol sending end, wherein the power supply end is connected to the power pin of the female terminal, the protocol receiving end is connected to the female terminal, the protocol sending end is connected to the male terminal, and the protocol conversion circuit is used to forward the charging protocol information between the main device and the power adapter.

[0008] In some implementations, the Bluetooth audio connector described in the present disclosure further includes:

[0009] The first power conversion module has an input end connected to the power pin of the female terminal and the power pin of the male terminal respectively, and an output end connected to the power input pin of the controller.

[0010] In some embodiments, the power pin of the male terminal is connected to the power pin of the female terminal through a power switching switch, the power switching switch includes a first end, a second end and a control end, the first end is connected to the power pin of the female terminal, the second end is connected to the power pin of the male terminal, and the control end is connected to the charging protocol circuit;

[0011] The charging protocol circuit is configured to control the first end and the second end of the power supply switch to be conductive when it is detected that the power adapter is supplying power.

[0012] In some embodiments, the protocol sending end of the charging protocol circuit is connected to the configuration channel of the male terminal, and the charging protocol circuit is configured to: when not powered on, provide a pull-down level signal through the configuration channel so that the host device can power the controller through the power pin of the male terminal.

[0013] In some implementations, the charging protocol circuit is configured to provide a pull-up level signal through the configuration channel when it is detected that the power is supplied by a power adapter, so that the host device stops supplying power to the controller.

[0014] In some embodiments, the charging protocol circuit is configured to: when powered by a power adapter, receive charging protocol information of the power adapter through the protocol receiving end; convert the charging protocol information into PD protocol information; and send the PD protocol information to the configuration channel of the male terminal through the protocol sending end.

[0015] In some implementations, the Bluetooth audio connector described in the present disclosure further includes:

[0016] The second power conversion module has an input end connected to the power pin of the female socket terminal and an output end connected to the power end of the protocol conversion circuit.

[0017] In some embodiments, the controller is a Bluetooth chip; or,

[0018] The controller includes a processing chip and a Bluetooth module, and the controller is configured to send the received audio data to the slave device through the Bluetooth module.

[0019] In some embodiments, the master device includes a mobile phone, the slave device includes a TWS headset, and the male terminal and the female terminal are Type-C terminals.

[0020] In a second aspect, an embodiment of the present disclosure provides a Bluetooth headset, comprising:

[0021] Headphones; and

[0022] According to the Bluetooth audio connector described in any embodiment of the first aspect, the Bluetooth audio connector establishes a Bluetooth wireless connection with the headset.

[0023] The Bluetooth audio connector of the disclosed embodiment includes a male terminal, a female terminal, a controller and a charging protocol circuit, the power pin of the male terminal is connected to the power pin of the female terminal, the power input pin of the controller is respectively connected to the power pins of the female terminal and the male terminal, the audio signal pin is connected to the data signal pin of the male terminal, the power end of the charging protocol circuit is connected to the power pin of the female terminal, the protocol receiving end is connected to the female terminal, the protocol sending end is connected to the male terminal, and the protocol conversion circuit is used to forward the charging protocol information of the main device and the power adapter. In the disclosed embodiment, the fast charging protocol interaction between the power adapter and the main device is realized through the charging protocol circuit, so that in the scenario of Bluetooth audio connector transfer charging, the main device can be quickly charged, the charging efficiency of the main device is improved, and the user experience is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the specific embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 It is a schematic diagram of application scenarios of Bluetooth headsets in some embodiments of the present disclosure.

[0026] Figure 2 It is a schematic diagram of application scenarios of Bluetooth headsets in some embodiments of the present disclosure.

[0027] Figure 3 It is a schematic diagram of the hardware connection of a Bluetooth headset in some implementation modes of the present disclosure.

[0028] Figure 4 It is a circuit schematic diagram of a Dongle accessory in the related art.

[0029] Figure 5 is a circuit schematic diagram of a Bluetooth audio connector in some embodiments of the present disclosure.

[0030] Figure 6 is a circuit schematic diagram of a Bluetooth audio connector in some embodiments of the present disclosure.

[0031] Figure 7 is a circuit schematic diagram of a Bluetooth audio connector in some embodiments of the present disclosure.

[0032] Figure 8It is a structural block diagram of a main device in some implementation modes of the present disclosure. DETAILED DESCRIPTION

[0033] The technical solution of the present disclosure will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described implementation is a part of the implementation of the present disclosure, rather than all the implementations. Based on the implementation in the present disclosure, all other implementations obtained by ordinary technicians in the field without creative work are within the scope of protection of the present disclosure. In addition, the technical features involved in the different implementations of the present disclosure described below can be combined with each other as long as they do not conflict with each other.

[0034] Bluetooth Dongle accessories can enable Bluetooth devices to establish Bluetooth connections with various electronic devices and realize Bluetooth audio transmission. Dongle accessories are generally USB (Universal Serial Bus) interfaces. By plugging the Dongle accessories into electronic devices, Bluetooth communication connections can be established between electronic devices and Bluetooth devices.

[0035] For example Figure 1 A typical application scenario of a Bluetooth Dongle accessory is shown. Some computers 1 do not support the Bluetooth function and therefore cannot directly establish a Bluetooth connection with the headset 2. By inserting the Bluetooth Dongle accessory 3 into the USB port of the computer 1, the Dongle accessory 3 can interact with the computer 1 for audio data and send the audio data to the headset 2 through the Bluetooth module, so that the computer 1 that was originally unable to establish a Bluetooth connection supports the Bluetooth function.

[0036] With the development of Bluetooth communication technology, Bluetooth Dongle accessories are no longer limited to expansion accessories for electronic devices that do not support Bluetooth functions. Nowadays, some audio equipment manufacturers will develop supporting Dongle accessories for audio equipment to achieve low-latency, high-quality Bluetooth audio transmission.

[0037] For example Figure 2 In the example scenario, the TWS headset 21 has a matching Dongle accessory 22, which can be plugged into the charging port of the mobile phone 10, so that the Dongle accessory 22 interacts with the mobile phone 10 for audio data, and then sends it to the TWS headset 21 through its own Bluetooth module.

[0038] Since the TWS headset 21 and the Dongle accessory 22 can be developed in conjunction, the two can develop a private protocol for Bluetooth communication, thereby achieving Bluetooth audio transmission with lower latency and higher sound quality. For example, the current latency of the mobile phone 10 and the TWS headset 21 directly connected via Bluetooth is 100ms to 200ms, and if the mobile phone 10 establishes a Bluetooth connection with the TWS headset 21 through the Dongle accessory 22, the latency can be reduced to 50ms, which greatly improves the user experience and makes the TWS headset suitable for gaming scenarios with extremely high latency requirements.

[0039] However, the current mainstream mobile terminal devices often have only one data interface compatible with data transmission and charging. Figure 2 In the example scenario, the mobile phone 10 cannot be charged because the Dongle accessory 22 occupies the data interface of the mobile phone 10. In order to realize that the mobile phone 10 is connected to the Dongle accessory 22 while charging, there is a Dongle accessory with a dual interface in the related art, so that the Dongle accessory 22 can be connected to a power adapter to power the mobile phone 10.

[0040] For example Figure 3 The hardware connection scenario of the dual-interface Dongle accessory is shown. The Dongle accessory has a male terminal and a female terminal. The male terminal is used to be pluggable and connected to the charging interface of the electronic device. When the electronic device needs to be charged, the power adapter can be plugged into the female terminal of the Dongle accessory, so that the electronic device can be charged through the Dongle accessory.

[0041] However, in this charging scenario, due to the presence of the Dongle accessory, the power adapter and the electronic device cannot interact with the fast charging protocol, and the fast charging protocol handshake cannot be achieved, so it can only provide basic power charging for the electronic device, and the charging speed is slow. Figure 4 The working principle of the Dongle accessory is explained.

[0042] For ease of understanding, Figure 4 In the example, the power line is represented by a solid line, and the signal line is represented by a dotted line. Figure 4 In the example, the power line is represented by a solid line, and the signal line is represented by a dotted line. Figure 4In the description, SoC (System of Chip) refers to the main control chip of the Dongle accessory, which may include one or more processing cores for executing the control of other devices and interacting with the main device for audio data through the male terminal. The male terminal (UFP) is used to connect to the main device, and is pluggable with the female terminal on the main device. The main device may be, for example, the aforementioned mobile phone. The female terminal (DFP) is used to connect to the power adapter, and the male terminal on the power adapter is pluggable with the female terminal of the Dongle accessory. Pwr_Switch represents a switching switch, which is used to control the on and off of the charging circuit. DC / DC represents a power conversion circuit, which is used to transform and stabilize the input power supply. The pull-down resistor is used to pull down the level of the circuit.

[0043] exist Figure 4 In the example, the male and female terminals are Type-C type male and female terminals, that is, the male terminal is a Type-C plug, and the female terminal is a Type-C interface.

[0044] When only the Dongle accessory is inserted into the main device (such as a mobile phone), the pull-down resistor defaults to pull down the configuration channel CC1 / CC2 level. When the main device detects this pull-down level, it will actively output 5V voltage to DC / DC through the Vbus of the male terminal, and power the SoC after DC / DC voltage conversion, so that the Dongle accessory can work normally. The SoC interacts with the main device through the DM / DP channel for audio data, and then sends it to the slave device (such as headphones) using Bluetooth. During this process, Pwr_Switch remains disconnected.

[0045] When the Dongle accessory is inserted into the main device and the power adapter is inserted into the Dongle accessory, the adapter power is supplied to the DC / DC through the female terminal Vbus. At the same time, the SoC detects that the adapter is inserted and controls the pull-down resistor to be turned off. The main device detects that the CC1 / CC2 pull-down stops, and thus stops supplying power to the Dongle accessory. At this time, the DC / DC power is provided by the adapter. After the SoC detects that the power supply of the power adapter is stable, it controls Pwr_Switch to turn on, so that the power input from the power adapter can be supplied to the main device through Pwr_Switch to power the main device.

[0046] However, since the main device connected to the male terminal cannot interact with the power adapter connected to the female terminal through the fast charging protocol, the female terminal Vbus can only provide low-power power supply for the male terminal Vbus in the basic charging mode, generally 5V / 1A or 5V2A and other basic charging with a charging power not exceeding 10W. When the main device is directly connected to the power adapter, fast charging of 67W or even more than 100W can often be established through fast charging protocol interaction. From this, it can be seen that in the charging scenario using the Dongle accessory, the charging efficiency of the electronic device is low, which affects the user experience.

[0047] Based on the defects of the above-mentioned related technologies, the embodiments of the present disclosure provide a Bluetooth audio connector and a Bluetooth headset, aiming to solve the problem that fast charging cannot be established when power is supplied by a Dongle accessory, resulting in low charging efficiency of electronic devices, thereby improving the charging efficiency of electronic devices.

[0048] In a first aspect, an embodiment of the present disclosure provides a Bluetooth audio connector, which may include the aforementioned Dongle accessory, which is a Bluetooth hardware used to be plugged into a master device to implement a Bluetooth communication connection between the master device and a slave device.

[0049] like Figure 5 As shown, in some embodiments, the Bluetooth audio connector of the example of the present disclosure includes a controller, a male terminal, a female terminal, and a charging protocol chip.

[0050] The controller refers to the main control circuit of the Bluetooth audio connector, which may include a processor and a memory. The processor may be of any type, having one or more processing cores, which may perform single-threaded or multi-threaded operations, and is used to parse instructions to perform operations such as acquiring data, performing logical operations, and issuing operation processing results. The memory may include a volatile or non-volatile readable storage medium, such as a flash memory device, and the memory has a program storage area for storing computer executable programs and modules for the processor to call to implement one or more corresponding functions below. For example, in some embodiments, the controller may be a system-on-chip SoC, which integrates multiple data processing and interaction capabilities.

[0051] In some embodiments, the controller may also be integrated with a Bluetooth module, for example, the controller may use a Bluetooth chip, thereby eliminating the need for an external Bluetooth radio frequency circuit. Of course, those skilled in the art will appreciate that in other embodiments, the controller may also include a non-integrated processing chip and a Bluetooth module, and the two are connected through a peripheral circuit. In either case, it is only necessary that the Bluetooth audio connector be able to establish a Bluetooth connection with the slave device through the Bluetooth module, and those skilled in the art will undoubtedly understand and fully implement this, and this disclosure will not go into details.

[0052] exist Figure 5 In an example implementation, the controller can interact with the main device for audio data via the data signal DM / DP pin of the male terminal, that is, the audio signal pin of the controller can be communicatively connected with the DM / DP pin of the male terminal, and the controller can send the received audio data to the slave device via the Bluetooth module.

[0053] The male terminal and the female terminal are pluggable data plugs / interfaces, respectively. The male terminal is used for pluggable connection with the host device, and the female terminal is used for pluggable connection with the power adapter. In the embodiments of the present disclosure, the male terminal and the female terminal can be any interface type suitable for implementation, such as USB-A, Type-C, etc.

[0054] The fast charging protocol circuit refers to a circuit module used to perform protocol interaction with a power adapter. For example, in some embodiments, the fast charging protocol circuit may use a protocol chip. Figure 5 In the example, the fast charging protocol circuit includes a power supply end, a protocol receiving end (BC / QC) and a protocol sending end (CC1 / CC2).

[0055] The power supply end is connected to the power pin Vbus of the female terminal, so that when the power adapter is inserted, the power adapter supplies power to the charging protocol circuit through the power pin Vbus. The protocol receiving end is connected to the female terminal to receive the charging protocol information sent by the power adapter through the female terminal. The protocol sending end is connected to the configuration channel of the male terminal to convert the received protocol information into the target protocol and then send it to the main device end.

[0056] In the embodiments of the present disclosure, the master device and the slave device may also be any device suitable for establishing a Bluetooth connection. For example, the master device may be a mobile phone, a tablet computer, etc., and the slave device may be a TWS headset, a Bluetooth speaker, etc. The present disclosure does not impose any restrictions on this.

[0057] A power adapter refers to a charger used to connect to AC power, which generally includes an adapter plug and a data cable. The adapter plug is used to connect to the AC power, and the data cable is used to connect to the charging interface of the electronic device. In the embodiment of the present disclosure, the charging cable of the power adapter is used to connect to the female terminal of the Bluetooth audio connector.

[0058] Continue to refer to Figure 5As shown, in the embodiment of the present disclosure, the power pin Vbus of the female terminal of the Bluetooth audio connector is connected to the power pin Vbus of the male terminal through the power switching switch Pwr Switch, that is, the power switching switch PwrSwitch includes a first end, a second end and a control end, the first end is connected to the power pin Vbus of the female terminal, the second end is connected to the power pin Vbus of the male terminal, and the control end is connected to the charging protocol circuit. At the same time, the charging protocol circuit detects the power pin Vbus of the female terminal to detect whether the power adapter is inserted through level changes.

[0059] In the disclosed embodiment, the Bluetooth audio connector also includes a first power conversion module DC / DC 1, the input end of the first power conversion module DC / DC 1 is respectively connected to the power pin Vbus of the female terminal and the power pin Vbus of the male terminal, and the output end is connected to the power input pin Vin of the controller.

[0060] DC / DC is a direct current / direct current converter, which is mainly used for voltage transformation and voltage stabilization. In the embodiments of the present disclosure, the first power conversion module is not limited to the DC / DC circuit, but can also be any other voltage transformation circuit suitable for implementation, and the present disclosure does not impose any restrictions on this.

[0061] For ease of understanding, in the following implementation manner of the present disclosure, a mobile phone will be used as the master device, a TWS headset will be used as the slave device, the Type-C type will be used as an example of the male and female terminals, and the male terminal will be a Type-C plug and the female terminal will be a Type-C interface.

[0062] It is worth noting that the Type-C connector protocol includes two CC (Configuration Channel) pins, CC1 and CC2, which are mainly used for insertion detection and negotiation of DFP / UFP identity.

[0063] Nowadays, fast charging protocols mainly include QC protocol, PD protocol and BC protocol, among which QC protocol and BC protocol need to exchange protocol information through the DM / DP pins of the Type-C connector. In the disclosed embodiment, the DM / DP pins on the male terminal have been occupied for audio data interaction, so it is impossible to directly realize the interaction between QC protocol and BC protocol, and it is impossible to establish fast charging that complies with both protocols.

[0064] Therefore, in the embodiment of the present disclosure, the protocol sending end of the charging protocol circuit is connected to the configuration channel CC1 / CC2 of the male terminal, and the communication between the charging protocol circuit and the configuration channel CC1 / CC2 of the male terminal includes the following two aspects.

[0065] On the one hand, when the charging protocol circuit is not powered on, that is, there is no power adapter to power the charging protocol chip, the protocol transmitter provides the male terminal configuration channel CC1 / CC2 with a pull-down level signal (low level), and the master device can power the controller through the power pin Vbus of the male terminal when detecting the pull-down level signal. On the other hand, when the charging protocol circuit is powered on, that is, the power adapter powers the charging protocol chip, the protocol transmitter provides the male terminal configuration channel CC1 / CC2 with a pull-up level signal (high level), and the master device detects that the pull-down level signal is turned off, and can stop powering the controller through the power pin Vbus of the male terminal. At this time, the controller is powered by the power adapter.

[0066] On the other hand, when the charging protocol circuit is powered on, the protocol receiving end of the charging protocol circuit can receive the charging protocol information sent by the power adapter, and perform PD conversion on the charging protocol information, and send the converted PD protocol information to the main device end through the configuration channel CC1 / CC2 of the male terminal, thereby realizing the fast charging protocol interaction between the power adapter and the main device and establishing a fast charging connection.

[0067] For ease of understanding, the present disclosure is described below in combination with two different working scenarios. Figure 5 The working principle of the example Bluetooth audio connector is explained.

[0068] 1) Only the Bluetooth audio connector is connected to the host device.

[0069] like Figure 5 As shown, the male terminal of the Bluetooth audio connector is inserted into the charging port of the host device. At this time, since the charging protocol circuit has no power supply, the power supply switch Pwr_Switch is in the disconnected state, and the protocol transmitter of the charging protocol circuit outputs a pull-down level signal (low level) to the configuration channel CC1 / CC2 pin of the male terminal.

[0070] The master device detects the pull-down level signal of the configuration channel CC1 / CC2 pin of the male terminal, and then provides power through the power pin Vbus of the male terminal. The power provided by the master device is stepped down and stabilized by the first power conversion module DC / DC 1, and then reaches the power input pin Vin of the controller, at which time the controller is powered on.

[0071] During operation, the controller interacts with the master device via the audio signal pins DM / DP for audio data, and sends the received audio data to the slave device via the Bluetooth module, so that the slave device plays the audio data.

[0072] In this scenario, since there is no external power adapter plugged in, the Bluetooth audio connector is powered by the host device.

[0073] 2) The power adapter is plugged into the Bluetooth audio connector while the Bluetooth audio connector is connected to the host device.

[0074] like Figure 5 As shown, the male terminal of the Bluetooth audio connector is inserted into the charging port of the main device, and the power adapter is inserted into the female terminal of the Bluetooth audio connector. At this time, the power adapter supplies power to the charging protocol circuit through the female terminal Vbus, and the charging protocol circuit is powered on and works.

[0075] After the charging protocol circuit is powered on, the protocol transmitter stops outputting the pull-down level signal for the configuration channel CC1 / CC2, and instead outputs the pull-up level signal (high level). When the master device detects that the pull-down level signal stops, it stops supplying power to the controller through the male terminal Vbus, that is, the master device no longer supplies power to the controller.

[0076] At the same time, the power supply switching switch Pwr_Switch is controlled to be turned on, so that the power provided by the power adapter through the power pin Vbus of the female terminal passes through the power supply switching switch Pwr_Switch, and reaches the power pin Vbus of the male terminal to charge the main device; the other way passes through the first power conversion module DC / DC 1 to power the controller. In this scenario, the power adapter charges the main device while supplying power to the Bluetooth audio connector. In this process, the audio data interaction process between the Bluetooth audio connector and the slave device is the same as above and will not be repeated.

[0077] After the Bluetooth audio connector completes the power switching, the controller can control the charging protocol circuit to interact the charging protocol between the power adapter and the main device, thereby establishing a fast charging connection between the two.

[0078] For example Figure 5 In the example, the power adapter may send charging protocol information to the protocol receiving end of the charging protocol circuit, and the charging protocol information may be, for example, QC protocol information, PD protocol information, or BC protocol information.

[0079] From the foregoing, it can be seen that if the charging protocol information sent by the power adapter is QC protocol information or BC protocol information, since the DM / DP pins on the male terminal are occupied, it is impossible to establish a QC or BC protocol handshake with the main device.

[0080] Therefore, the charging protocol information can convert the format of the received QC protocol information or BC protocol information, and convert the QC protocol information and BC protocol information into PD protocol information. Since the PD protocol information can interact through the configuration channel CC1 / CC2, the charging protocol circuit can send the converted PD protocol information to the main device through the configuration channel CC1 / CC2 of the male terminal.

[0081] It can be understood that the charging protocol information sent by the power adapter carries the fast charging mode supported by itself. The fast charging mode refers to the fast charging strategy supported by the power adapter. For example, if the power adapter supports 40W fast charging strategy, 67W fast charging strategy and 120W fast charging strategy, the charging protocol information can carry these fast charging strategy information.

[0082] After receiving the PD protocol information converted by the charging protocol circuit, the main device can select the maximum power fast charging strategy that it also supports according to the fast charging strategy carried in the PD protocol information, and return the protocol application information to the charging protocol circuit. The protocol application information is used to apply for the current and voltage of the corresponding charging strategy from the power adapter. The charging protocol circuit forwards the received protocol application information to the power adapter, so that the power adapter can provide the corresponding fast charging current / voltage to complete the fast charging establishment process. That is, the power adapter provides a high-power charging current to the power pin Vbus of the male terminal through the power pin Vbus of the female terminal, thereby realizing a high-power fast charging process for the main device.

[0083] From the above, it can be seen that in the embodiment of the present disclosure, the fast charging protocol interaction between the power adapter and the main device is implemented through the charging protocol circuit, so that in the scenario of charging via the Bluetooth audio connector, the main device can be quickly charged, the charging efficiency of the main device can be improved, and the user experience can be improved.

[0084] In the above Figure 5 In the implementation mode, the first power conversion module DC / DC 1 is connected to the power pin Vbus of the female terminal through the power supply switching switch Pwr Switch. Therefore, after the power adapter is inserted into the female terminal, the charging protocol circuit needs to control the power supply switching switch Pwr Switch to be turned on, and the power provided by the power adapter through the power pin Vbus of the female terminal can reach the first power conversion module DC / DC 1 to power the controller. In this process, due to the interruption of the power supply of the main device, the power supply of the power adapter has a certain switching delay, which may cause a short power interruption in the Bluetooth audio connector and cause a restart problem.

[0085] Therefore, in Figure 6 In the implementation, the input end of the first power conversion module DC / DC 1 can also be directly connected to the power pin Vbus of the female socket terminal. Therefore, after the power adapter is inserted into the female socket terminal, there is no need to wait for the charging protocol circuit to control the power supply switching switch Pwr Switch to be turned on. The power provided by the power adapter through the power pin Vbus of the female socket terminal can directly reach the first power conversion module DC / DC 1 to power the controller, reducing the risk of power interruption and restart during power switching.

[0086] exist Figure 6 In the implementation manner, the working principles of the remaining parts are exactly the same as those described above, and those skilled in the art can understand it by referring to the above, and the present disclosure will not elaborate on it.

[0087] Above Figure 5 , Figure 6 In the implementation mode, considering that during the fast charging process between the power adapter and the main device, the power provided by the power adapter will be greatly increased, so the power supply for the charging protocol circuit will also be increased. In order to protect the charging protocol circuit, a second power conversion module can be set between the charging protocol circuit and the female terminal. Figure 7 The implementation method is described.

[0088] like Figure 7 As shown, the Bluetooth audio connector also includes a second power conversion module DC / DC 2, the input end of the second power conversion module is connected to the power pin Vbus of the female terminal, and the output end is connected to the power end of the charging protocol circuit. DC / DC is a direct current / direct current converter, which is mainly used for voltage conversion and voltage stabilization. In the embodiment of the present disclosure, the second power conversion module is not limited to the DC / DC circuit, but can also be any other voltage conversion circuit suitable for implementation, and the present disclosure does not limit this.

[0089] From the above, it can be seen that in the embodiment of the present disclosure, a charging protocol circuit is utilized to establish a fast charging connection between the power adapter and the main device, and the power supply of the protocol conversion circuit is transformed and stabilized by the second power conversion module to maintain the power supply of the protocol conversion circuit stable and avoid the power supply of the power adapter increasing and damaging the protocol conversion circuit.

[0090] In a second aspect, an embodiment of the present disclosure provides a Bluetooth headset, which includes an earphone and a Bluetooth audio connector of any of the aforementioned embodiments.

[0091] For example Figure 2 In the example scenario, the Bluetooth headset includes a TWS headset 21 and a Dongle accessory 22. The Dongle accessory 22 is a Bluetooth audio connector of an embodiment of the present disclosure. Using the Bluetooth headset of the embodiment of the present disclosure, a low-latency, high-quality Bluetooth connection can be established between the TWS headset and any electronic device.

[0092] Those skilled in the art will appreciate that the earphones described in the present disclosure are not limited to Figure 2 The exemplary TWS earphones may also be head-mounted earphones, neck-ring earphones, etc., which are not limited in the present disclosure. In addition, for the working principle of the earphones and the Bluetooth audio connector, those skilled in the art may refer to the above embodiments, which will not be described in detail.

[0093] Figure 8The structure block diagram of the main device in some embodiments is shown. Figure 8 In the example, the main device is an electronic device, which may be a smart phone, for example. Figure 8 The structure of the electronic device will be described.

[0094] Reference Figure 8 , the electronic device 1800 may include one or more of the following components: a processing component 1802 , a memory 1804 , a power component 1806 , a multimedia component 1808 , an audio component 1810 , an input / output (I / O) interface 1812 , a sensor component 1816 , and a communication component 1818 .

[0095] The processing component 1802 generally controls the overall operation of the electronic device 1800, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 1802 may include one or more processors 1820 to execute instructions. In addition, the processing component 1802 may include one or more modules to facilitate interaction between the processing component 1802 and other components. For example, the processing component 1802 may include a multimedia module to facilitate interaction between the multimedia component 1808 and the processing component 1802. For another example, the processing component 1802 may read executable instructions from a memory to implement electronic device related functions.

[0096] The memory 1804 is configured to store various types of data to support operations on the electronic device 1800. Examples of such data include instructions for any application or method operating on the electronic device 1800, contact data, phone book data, messages, pictures, videos, etc. The memory 1804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0097] The power supply component 1806 provides power to the various components of the electronic device 1800. The power supply component 1806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the electronic device 1800.

[0098] The multimedia component 1808 includes a display screen that provides an output interface between the electronic device 1800 and the user. In some embodiments, the multimedia component 1808 includes a front camera and / or a rear camera. When the electronic device 1800 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have a focal length and optical zoom capability.

[0099] The audio component 1810 is configured to output and / or input audio signals. For example, the audio component 1810 includes a microphone (MIC), and when the electronic device 1800 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 1804 or sent via the communication component 1818. In some embodiments, the audio component 1810 also includes a speaker for outputting audio signals.

[0100] I / O interface 1812 provides an interface between processing component 1802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: home button, volume button, start button, and lock button.

[0101] The sensor assembly 1816 includes one or more sensors for providing various aspects of status assessment for the electronic device 1800. For example, the sensor assembly 1816 can detect the open / closed state of the electronic device 1800, the relative positioning of components, such as the display and keypad of the electronic device 1800, and the sensor assembly 1816 can also detect the position change of the electronic device 1800 or a component of the electronic device 1800, the presence or absence of user contact with the electronic device 1800, the orientation or acceleration / deceleration of the electronic device 1800, and the temperature change of the electronic device 1800. The sensor assembly 1816 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 1816 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1816 may also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0102] The communication component 1818 is configured to facilitate wired or wireless communication between the electronic device 1800 and other devices. The electronic device 1800 can access a wireless network based on a communication standard, such as Wi-Fi, 2G, 3G, 4G, 5G or 6G, or a combination thereof. In an exemplary embodiment, the communication component 1818 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1818 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0103] In an exemplary embodiment, the electronic device 1800 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components.

[0104] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the embodiments. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.

Claims

1. A Bluetooth audio connector, characterized in that: include: A male terminal and a female terminal, the male terminal is used to connect to a main device, the female terminal is used to connect to a power adapter, and the power pin of the male terminal is connected to the power pin of the female terminal; The controller comprises a power input pin and an audio signal pin, wherein the power input pin is respectively connected to the power pin of the female terminal and the power pin of the male terminal, and the audio signal pin is connected to the data signal pin of the male terminal, and the controller is used to send the audio data received through the audio signal pin to the slave device via Bluetooth; as well as The charging protocol circuit includes a power supply end, a protocol receiving end and a protocol sending end, wherein the power supply end is connected to the power pin of the female terminal, the protocol receiving end is connected to the female terminal, the protocol sending end is connected to the male terminal, and the protocol conversion circuit is used to forward the charging protocol information between the main device and the power adapter.

2. The Bluetooth audio connector according to claim 1, characterized in that: Also includes: The first power conversion module has an input end connected to the power pin of the female terminal and the power pin of the male terminal respectively, and an output end connected to the power input pin of the controller.

3. The Bluetooth audio connector according to claim 1 or 2, characterized in that: The power pin of the male terminal is connected to the power pin of the female terminal through a power supply switching switch, and the power supply switching switch includes a first end, a second end and a control end, the first end is connected to the power pin of the female terminal, the second end is connected to the power pin of the male terminal, and the control end is connected to the charging protocol circuit; The charging protocol circuit is configured to control the first end and the second end of the power supply switch to be conductive when it is detected that the power adapter is supplying power.

4. The Bluetooth audio connector according to claim 1, characterized in that: The protocol sending end of the charging protocol circuit is connected to the configuration channel of the male terminal, and the charging protocol circuit is configured to: when not powered on, provide a pull-down level signal through the configuration channel so that the host device can power the controller through the power pin of the male terminal.

5. The Bluetooth audio connector according to claim 4, characterized in that: The charging protocol circuit is configured to provide a pull-up level signal through the configuration channel when it is detected that the power is supplied by the power adapter, so that the host device stops supplying power to the controller.

6. The Bluetooth audio connector according to claim 4 or 5, characterized in that: The charging protocol circuit is configured to: when powered by a power adapter, receive charging protocol information of the power adapter through the protocol receiving end; Convert the charging protocol information into PD protocol information; The PD protocol information is sent to the configuration channel of the male terminal through the protocol sending end.

7. The Bluetooth audio connector according to claim 1, characterized in that: Also includes: The second power conversion module has an input end connected to the power pin of the female socket terminal and an output end connected to the power end of the protocol conversion circuit.

8. The Bluetooth audio connector according to claim 1, characterized in that: The controller is a Bluetooth chip; or, The controller includes a processing chip and a Bluetooth module, and the controller is configured to send the received audio data to the slave device through the Bluetooth module.

9. The Bluetooth audio connector according to claim 1, characterized in that: The master device includes a mobile phone, the slave device includes a TWS headset, and the male terminal and the female terminal are Type-C terminals.

10. A Bluetooth headset, characterized in that: include: earphone; as well as According to any one of claims 1 to 9, the Bluetooth audio connector establishes a Bluetooth wireless connection with the headset.

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