TWS Earphone Charging Box Communication Protocol
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Solution Overview
Problem
The existing communication method between TWS earphones and charging boxes requires frequent switching of the master-slave relationship and sends notification messages before each data packet, increasing communication burden.
Innovation Solution
A communication method where the charging box actively sends data request messages to the earphones, which respond with reply messages, maintaining a consistent active sender and passive receiver role, eliminating the need for constant master-slave relationship switching and reducing communication burden.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If notification messages are sent before each data packet and master-slave relationship switching is implemented, then data transmission between earphones and charging box is achieved, but communication burden increases
Solution Approach 1:
The patent extracts the notification message mechanism from the data transmission process. Instead of sending separate notification messages before each data packet, the system uses the existing ACK mechanism to implicitly notify data reception status, eliminating redundant notification messages and reducing communication burden while maintaining transmission reliability
Solution Approach 2:
The patent inverts the traditional master-slave switching approach by maintaining fixed roles (charging box as master, earphones as slave) throughout the entire data transmission process. Data packets are sent from master to slave, and ACKs are returned from slave to master, eliminating the complexity of role switching while ensuring reliable communication
2Adaptability or versatility
If master-slave relationship switching is implemented between earphones and charging box, then bidirectional data transmission is achieved, but communication protocol complexity increases
Solution Approach 1:
The patent makes the ACK mechanism universal by using it for both data transmission confirmation and bidirectional communication coordination. The same ACK packet structure serves multiple functions: confirming data receipt, indicating ready state for reverse transmission, and maintaining protocol simplicity without requiring separate control messages
Solution Approach 2:
The patent implements preliminary action by having the slave device send an ACK packet in advance to indicate it is ready to receive data. This preliminary acknowledgment allows the master to immediately send data packets without waiting for additional handshaking, enabling efficient bidirectional transmission while keeping the protocol simple
Data Source
AI summary
A communication method between earphones and a charging box is disclosed. The method comprises: acquiring a data packet to be sent from a sending queue; sending a data request message containing the data packet to be sent to the earphones; and when having received a reply message from the earphones, continuing to execute the step of acquiring a data packet to be sent from the sending queue until the sending queue is empty. In the communication method between earphones and a charging box of the present disclosure, when data is transmitted between the charging box and the earphones, the data transmission between the charging box and the earphones can be realized without switching the master-slave relationship between the charging box and the earphones, which is simple to realize and reduces the additional communication burden.