Method for communication between wireless earphone and charging case, charging case, tws earphone, and system

A method for communicating between a wireless earphone and a charging case, wherein the wireless earphone comprises a second processor, an earphone I/O controlling module, a second I/O interface, and a third I/O interface connected to the second I/O interface, the method is applied to the second processor, and the method comprises:

• receiving, via the third I/O interface, a predetermined negotiation signal transmitted by the charging case via a first I/O interface;
• determining whether the predetermined negotiation signal meets a predetermined negotiation requirement;
• and
• in a case that the predetermined negotiation signal meets the predetermined negotiation requirement, transmitting a negotiation confirmation signal corresponding to the predetermined negotiation signal via the third I/O interface, and then controlling the earphone I/O controlling module to set an operation attribute of the second I/O interface as a communication interface to control the wireless earphone to enter into a communication mode for communicating with the charging case.

A TWS earphone system, comprising a charging case and a TWS earphone, wherein

• the charging case comprises a first processor, an earphone case I/O controlling module and a first I/O interface, and the first processor is configured to execute a computer program to perform:
• controlling, in response to a case opening signal, the earphone case I/O controlling module to set an operation attribute of the first I/O interface as a communication interface;
• transmitting a predetermined negotiation signal to the wireless earphone via the first I/O interface;
• determining whether a negotiation confirmation signal corresponding to the predetermined negotiation signal is received from the wireless earphone via the first I/O interface;
• and
• controlling the charging case to enter into a communication mode for communicating with the wireless earphone in a case that the negotiation confirmation signal corresponding to the predetermined negotiation signal is received from the wireless earphone via the first I/O interface;
• and
• the TWS earphone comprises a second processor, an earphone I/O controlling module, a second I/O interface, and a third I/O interface connected to the second I/O interface, and the second processor is configured to execute a computer program to perform:
• receiving, via the third I/O interface, a predetermined negotiation signal transmitted via a first I/O interface by the charging case;
• determining whether the predetermined negotiation signal meets a predetermined negotiation requirement;
• and
• in a case that the predetermined negotiation signal meets the predetermined negotiation requirement, transmitting a negotiation confirmation signal corresponding to the predetermined negotiation signal via the third I/O interface, and then controlling the earphone I/O controlling module to set an operation attribute of the second I/O interface as a communication interface to control the wireless earphone to enter into a communication mode for communicating with the charging case.