Wireless Earphone Charging Contact Mode Switching for BLE Conflict Resolution
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Solution Overview
Problem
Conventional Bluetooth Low Energy (BLE) communication between wireless headsets and charging boxes often results in conflicts between broadcasting and scanning, leading to unreliable information interaction and a poor user experience due to the inability to establish a reliable single-line connection.
Innovation Solution
A method and apparatus that determine whether the charging box is in a communication mode and switch the charging contact from a charging mode to a communication mode to establish a single-line connection, allowing for reliable data exchange between the wireless earphone and the charging box, including starting BLE scanning and sending command information to facilitate efficient data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Bluetooth Low Energy (BLE) communication is used for information interaction between the charging box and the wireless headset, then wireless communication capability is achieved, but conflicts of broadcasting and scanning occur leading to unreliable communication
Solution Approach 1:
The patent segments the communication function into two distinct pathways: BLE communication for initial connection and pairing commands, and single-line communication for data transmission. This segmentation allows each communication mode to operate independently without interfering with the other, eliminating the broadcasting and scanning conflicts inherent in pure BLE communication while maintaining reliable information interaction between the charging box and wireless headset.
Solution Approach 2:
The patent introduces a single-line communication interface as an intermediary mechanism between the charging box and wireless headset. This intermediary pathway handles data transmission tasks that would otherwise burden the BLE communication system, allowing BLE to focus on connection management and pairing while the single-line interface manages bulk data transfer, thereby resolving the conflicts between broadcasting and scanning operations.
2Device complexity
If the charging contact is used for both charging mode and communication mode, then device complexity is reduced, but mode switching reliability is compromised
Solution Approach 1:
The patent implements dynamic functionality in the charging contact by enabling it to switch between charging mode and communication mode based on operational requirements. The contact structure itself remains simple and static, but its electrical characteristics and connected components are dynamically reconfigured through control circuits that detect the operational state and activate the appropriate communication or charging pathway, thereby maintaining low device complexity while ensuring reliable mode switching.
Solution Approach 2:
The patent changes the electrical parameters of the charging contact based on the operational mode. In charging mode, the contact maintains its standard power transmission characteristics. In communication mode, the system modifies the electrical parameters (such as voltage levels, signal frequency, or impedance) to enable reliable data transmission while using the same physical contact, thus avoiding the need for separate hardware contacts while ensuring reliable mode-specific operation.
Data Source
AI summary
Provided is a method for establishing a single-line connection. A wireless earphone determines whether a power supply contact of a charging box is in a communication mode, where a charging contact of the wireless earphone is connected to the power supply contact of the charging box. The wireless earphone switches the charging contact from a charging mode to a communication mode to establish a single-line connection with the charging box when determining that the power supply contact of the charging box is in the communication mode.