CN-115967878-B - Wireless earphone, charging box and communication method of wireless earphone and charging box

Abstract

The embodiment of the application provides a wireless earphone, a charging box and a communication method of the wireless earphone and the charging box, wherein a positive connector and a negative connector of the wireless earphone are respectively connected with a positive electrode and a negative electrode of the charging box. The wireless earphone comprises an earphone control module, a current pulling circuit, a first switching module and an earphone control module, wherein the earphone control module is used for generating a first request when the wireless earphone receives a charging signal transmitted by a charging box through a positive connector, the current pulling circuit is used for applying a target current to a negative connector according to the first request, the target current is used for controlling the charging box to control the positive connector to be adjusted to a state of transmitting a communication signal from a state of transmitting the charging signal, the first switching module is used for monitoring whether the positive connector is adjusted to the state of transmitting the communication signal, and the earphone control module is also used for communicating with the charging box when the positive connector is adjusted to the state of transmitting the communication signal. By implementing the embodiment of the application, the communication can be actively initiated to the charging box under the condition of not frequently interrupting the charging state of the wireless earphone.

Inventors

• ZHANG ZONGHENG
• MEI HONGCHEN

Assignees

• 华为技术有限公司

Dates

Publication Date

20260508

Application Date

20211011

Claims (20)

1. 1. A wireless earphone is characterized in that a positive connector and a negative connector of the wireless earphone are respectively connected with a positive electrode and a negative electrode of a charging box, and the wireless earphone comprises: The earphone control module is used for generating a first request when the wireless earphone receives a charging signal transmitted by the charging box through the positive electrode connector, wherein the first request is used for requesting to communicate with the charging box; A current drawing circuit for applying a target current to the negative electrode connector according to the first request, wherein the target current is used for controlling the positive electrode connector to be adjusted from a state of transmitting a charging signal to a state of transmitting a communication signal by the charging box; The first switching module is used for monitoring whether the positive connector is adjusted to the state of the transmission communication signal; the first switching module is specifically configured to determine whether the positive connector is adjusted to the state of transmitting the communication signal by monitoring the voltage at the positive connector; The earphone control module is further configured to communicate with the charging box when the positive connector is adjusted to the state of transmitting the communication signal.
2. 2. The headset of claim 1, wherein the positive connector has a voltage in the state of transmitting the charging signal that is greater than a voltage in the state of transmitting the communication signal; the earphone control module is specifically used for communicating with the charging box after the voltage at the positive electrode connector is reduced.
3. 3. The earphone of claim 1, wherein the first request comprises a first voltage and the pull-current circuit comprises a first input and a first output; the earphone control module is further used for applying the first voltage to the current drawing circuit through the first input end; the current drawing circuit is specifically configured to conduct the current drawing circuit and output the target current to the negative electrode connector through the first output terminal after the earphone control module applies the first voltage through the first input terminal.
4. 4. The earphone of claim 1, wherein the first request comprises a first voltage, the pull-current circuit comprises a current-limiting resistor and a switching circuit connected in series, wherein the current-limiting resistor is used to determine the magnitude of the target current, and the switching circuit is used to control the pull-current circuit to be turned on or off; The earphone control module is specifically configured to apply the first voltage to the switching circuit; The current drawing circuit is specifically used for controlling the current drawing circuit to be conducted and outputting the target current to the negative electrode connector after the first voltage is applied to the switch circuit.
5. 5. The headset of any one of claims 1-4, wherein the wireless headset further comprises a charging module, the charging module comprising a charging input and a charging output; The charging module is used for receiving the charging signal transmitted by the positive electrode connector through the charging input end and transmitting the charging signal to the charging box coupled with the charging output end.
6. 6. The earphone of claim 5, wherein the pull-current circuit further comprises a second input coupled to the charging input or to the charging output.
7. 7. The charging box of the wireless earphone is characterized in that an anode and a cathode of the charging box are respectively connected with an anode connector and a cathode connector of the wireless earphone, and the charging box comprises: The charging box control module is used for monitoring the magnitude of current at the negative electrode connector when a charging signal is transmitted to the wireless earphone through the positive electrode connector; When the current at the negative electrode connector is changed, controlling a second switching module to adjust the positive electrode connector from the state of transmitting the charging signal to the state of transmitting the communication signal, wherein the current at the negative electrode connector is increased when the wireless earphone applies the target current to the negative electrode connector; And receiving a communication signal sent by the wireless earphone.
8. 8. The charging cartridge of claim 7, further comprising a sense resistor connected in series with the negative electrode, wherein the sense resistor increases in voltage across when the wireless headset applies a target current to the negative electrode connector; the charging box control module is specifically used for monitoring the voltage at two ends of the detection resistor.
9. 9. The charging cartridge of claim 8, further comprising a monitoring circuit comprising a third input, a fourth input, and a second output, wherein the third input and the fourth input are respectively connected to two ends of the detection resistor, and the second output is connected to a charging cartridge control terminal; The charging box control module is specifically configured to receive a second voltage input by the monitoring circuit through the second output end after the magnitude of the current at the negative electrode connector changes; and controlling the second switching module to adjust the positive electrode connector from the state of transmitting the charging signal to the state of transmitting the communication signal according to the second voltage.
10. 10. The communication method of the wireless earphone and the charging box is characterized by being applied to the wireless earphone, wherein a positive connector and a negative connector of the wireless earphone are respectively connected with a positive electrode and a negative electrode of the charging box, and the method comprises the following steps: When the wireless earphone receives a charging signal transmitted by the charging box through the positive connector, generating a first request through an earphone control module, wherein the first request is used for requesting to communicate with the charging box; Applying a target current to the negative electrode connector through a current drawing circuit according to the first request, wherein the target current is used for controlling the positive electrode connector to be adjusted from a state of transmitting a charging signal to a state of transmitting a communication signal by the charging box; Monitoring whether the positive connector is adjusted to the state of the transmission communication signal through a first switching module, wherein the monitoring whether the positive connector is adjusted to the state of the transmission communication signal through the first switching module comprises the steps of monitoring the voltage at the positive connector through the first switching module to determine whether the positive connector is adjusted to the state of the transmission communication signal; and in the state that the positive connector is adjusted to transmit the communication signal, communicating with the charging box through the earphone control module.
11. 11. The method according to claim 10, wherein a voltage of the positive electrode connector in the state of transmitting the charging signal is greater than a voltage in the state of transmitting the communication signal; And in a state that the positive connector is adjusted to the transmission communication signal, communicating with the charging box through the earphone control module, wherein the charging box comprises: And after the voltage at the positive electrode connector is reduced, the earphone control module is communicated with the charging box.
12. 12. The method of claim 10, wherein the first request comprises a first voltage, the pull-current circuit having a first input and a first output; the applying, by a current draw circuit, a target current to the negative connector according to the first request, comprising: Applying the first voltage to the current drawing circuit through the first input terminal according to the first request; After the first voltage is applied to the current drawing circuit, the current drawing circuit is conducted and the target current is applied to the negative electrode connector through the first output end.
13. 13. The method of claim 10, wherein the first request comprises a first voltage and the pull-current circuit comprises a current limiting resistor and a switching circuit connected in series, wherein the current limiting resistor is used to determine the magnitude of the target current and the switching circuit is used to control the pull-current circuit to turn on or off; the applying, by a current draw circuit, a target current to the negative connector according to the first request, comprising: applying a first voltage to the switching circuit according to the first request; And after a first voltage is applied to the switch circuit, controlling the current pulling circuit to be conducted and applying the target current to the negative electrode connector.
14. 14. The method of any of claims 10-13, wherein the wireless headset further comprises a charging module, the charging module comprising a charging input and a charging output; the method further includes receiving the charging signal transmitted by the positive connector through the charging input and transmitting the charging signal to the charging cartridge coupled to the charging output.
15. 15. The method of claim 14, wherein the pull-current circuit further comprises a second input coupled to the charge input or to the charge output.
16. 16. The communication method of the wireless earphone and the charging box is characterized by being applied to the charging box, wherein the positive electrode and the negative electrode of the charging box are respectively connected with a positive electrode connector and a negative electrode connector of the wireless earphone, and the method comprises the following steps: monitoring the magnitude of current at the negative electrode connector by a charging box control module when a charging signal is transmitted to the wireless earphone through the positive electrode connector; when the current signal at the negative electrode connector is changed, controlling a second switching module to adjust the positive electrode connector from the state of transmitting the charging signal to the state of transmitting the communication signal, wherein when the wireless earphone applies the target current to the negative electrode connector, the current at the negative electrode connector is increased; And receiving a communication signal sent by the wireless earphone.
17. 17. The method of claim 16, wherein the charging cartridge comprises a sense resistor connected in series with the negative electrode, wherein a voltage across the sense resistor increases when the wireless headset applies a target current to the negative electrode connector; The monitoring of the magnitude of the current at the negative connector includes: And monitoring the voltage at two ends of the detection resistor.
18. 18. The method of claim 17, wherein the charging cartridge further comprises a monitoring circuit comprising a third input, a fourth input, and a second output, wherein the third input and the fourth input are respectively connected to two ends of the sense resistor, and the second output is connected to a charging cartridge control terminal; the method further comprises the steps of receiving a second voltage input by the monitoring circuit through the second output end through the charging box control module after the current at the negative electrode connector is changed; the controlling the second switching module to adjust the positive connector from the state of transmitting the charging signal to the state of transmitting the communication signal includes: and controlling the second switching module to adjust the positive electrode connector from the state of transmitting the charging signal to the state of transmitting the communication signal according to the second voltage.
19. 19. An earphone charging communication device, characterized in that the earphone charging communication device comprises a wireless earphone and a charging box of the wireless earphone, the wireless earphone is any one of claims 1 to 6, the charging box is any one of claims 7 to 9, and a positive connector and a negative connector of the wireless earphone are respectively connected with a positive electrode and a negative electrode of the charging box.
20. 20. A computer program product comprising instructions which, when executed by a computer, cause the computer product to perform the method of any of claims 10-15 or 16-18.

Description

Wireless earphone, charging box and communication method of wireless earphone and charging box Technical Field The application relates to the technical field of terminals, in particular to a wireless earphone, a charging box and a communication method of the wireless earphone and the charging box. Background A truly wireless stereo (True Wireless Stereo, TWS) headset is typically composed of two parts, a headset and a charging box, which can communicate and charge after the headset is in the box. The contact of the earphone with the case is mainly by a metal PIN needle (PIN NEEDLE) to form a physical connection. Wherein the metal PIN is a metal substance for completing the conduction (transmission) of electricity (signals). At present, two schemes of two PIN needles and three PIN needles can be divided according to the PIN number on each earphone. Wherein, three PIN needles among the three PIN needle schemes are public (GND) PIN needle, charging PIN needle and communication PIN needle respectively, and charging and communication are applicable to two PIN needles respectively. Therefore, the charging and communication processes between the earphone and the charging box can be separated and are not interfered with each other. However, in the corresponding scheme, each earphone is provided with three metal PIN needles which are exposed, so that the earphone is easy to dirty and attractive, and the three metal PIN needles are more in devices, higher in cost and difficult to integrate in the earphone. Therefore, in order to avoid the problem of this solution, many TWS headphones currently use a two PIN scheme, where two PINs are a public PIN and a charging/communication PIN, respectively. That is, the charging and communication are conducted through the same PIN for signal transmission. When the box communicates with the earphone, the box polls to communicate with the earphone, namely, the charging process is periodically interrupted in the charging process, communication connection is established with the earphone, and the earphone is continuously charged after the communication is completed. The charging state can be frequently interrupted by frequent polling of the box, so that the charging efficiency is affected, and meanwhile, the abnormal situation of the earphone can not be known in time because the earphone can not actively initiate communication to the box in the charging process. Therefore, how to actively communicate with the charging box without frequently interrupting the charging state of the earphone is a problem to be solved. Disclosure of Invention The embodiment of the application provides a wireless earphone, a charging box and a communication method of the wireless earphone and the charging box, so that communication is actively carried out with the charging box under the condition of not frequently interrupting the charging state of the earphone. In a first aspect, an embodiment of the present application provides a wireless earphone, where an anode connector and a cathode connector of the wireless earphone are connected to an anode and a cathode of a charging box, respectively, and the wireless earphone includes: The earphone control module is used for generating a first request when the wireless earphone receives a charging signal transmitted by the charging box through the positive electrode connector, wherein the first request is used for requesting to communicate with the charging box; A current drawing circuit for applying a target current to the negative electrode connector according to the first request, wherein the target current is used for controlling the positive electrode connector to be adjusted from a state of transmitting a charging signal to a state of transmitting a communication signal by the charging box; the first switching module is used for monitoring whether the positive connector is adjusted to the state of the transmission communication signal; And the earphone control module is also used for communicating with the charging box when the positive connector is adjusted to the state of transmitting the communication signal. Currently, since the wireless earphone is connected to the charging box through two connectors, for example, a positive connector and a negative connector of the wireless earphone are connected to a positive electrode and a negative electrode of the charging box, respectively. Either the charging signal or the communication signal cannot be transmitted with the charging cartridge at the same time. In the prior art, the charging box needs to periodically interrupt the charging process of the wireless earphone, establishes communication connection with the wireless earphone, and continuously charges the earphone after the communication is completed so as to ensure that the wireless earphone can periodically keep communication with the charging box. The charging box can frequently interrupt the charging state of the wireless earphone to influence the c