Single Contact TWS Earphone Charging and Communication
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Solution Overview
Problem
True wireless stereo (TWS) earphones experience stability issues due to multiple contact points between the earphone and the charging box, affecting charging and communication efficiency.
Innovation Solution
An earphone control method that uses a single electrical contact to switch between charging and communication states by adjusting voltage levels to send preset signals, reducing the need for additional communication lines and minimizing contact points, thereby improving stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If three lines (ground line, power line, communication line) are used for charging and communication, then charging and communication functions are achieved, but the number of contact points increases affecting stability
Solution Approach 1:
The patent merges the power line and communication line into a single electrical contact. The first electrical contact serves dual purposes: it provides power transmission for charging and carries communication signals. This consolidation reduces the total number of contact points between the earphone charging box and the TWS earphone, thereby improving stability while maintaining both charging and communication functions.
Solution Approach 2:
The first electrical contact is designed to perform multiple functions simultaneously. It can operate in a charging state to transfer power and in a communication state to transmit data signals. The contact point is universally utilized for both power supply and communication purposes, eliminating the need for separate dedicated lines and reducing overall contact point complexity.
2Adaptability or versatility
If separate communication line is added for communication, then communication function is achieved, but the number of contact points increases
Solution Approach 1:
The communication function is merged with the existing power transmission line. The same first electrical contact that transfers power also carries communication signals. By modulating voltage levels on this single contact, the system achieves bidirectional communication without requiring an additional separate communication line, thus maintaining versatility while reducing contact point complexity.
Solution Approach 2:
The first electrical contact is designed as a universal interface that can handle both power transmission and communication tasks. Through state switching (charging state vs. communication state) and voltage level modulation, this single contact point provides adaptability for multiple functions, eliminating the need for separate dedicated communication contacts.
3Device complexity
If voltage level adjustment is used for signal transmission, then communication is achieved without additional lines, but voltage switching control is required
Solution Approach 1:
The system implements self-service through automatic state detection and voltage level switching. The earphone charging box autonomously determines whether to operate in charging state or communication state based on detected conditions, and automatically adjusts the voltage level of the first electrical contact accordingly. This eliminates the need for manual intervention or complex external control mechanisms, as the system self-regulates its operation mode.
Solution Approach 2:
The communication mechanism incorporates feedback through response signals. When the earphone charging box sends preset signals by adjusting voltage levels, it waits for and detects response signals from the TWS earphone. Based on this feedback, the system determines whether communication was successful and adjusts subsequent operations accordingly, enabling automated bidirectional communication through voltage modulation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient charging and communication between the earphone and the charging box without additional communication lines, enhancing the stability and performance of TWS earphones.
Implementation Method 1
adjusting a voltage level of the first electrical contact to send preset signals to the earphone through the first electrical contact
Data Source
AI summary
An earphone control method is applied to an earphone box provided with a first electrical contact, when the first electrical contact is in a charging state, the first electrical contact is configured for charging the earphone, and when the first electrical contact is a communication state, the first electrical contact is configured for establishing communication between the earphone box and the earphone, the method includes: in responding to that the first electrical contact is in the charging state, and the earphone box detects that a communication requirement exists between the earphone box and the earphone, adjusting a voltage level of the first electrical contact to send preset signals to the earphone; and upon receiving a response signal fed back by the earphone based on the preset signals, switching the first electrical contact to the communication state. An earphone box, an earphone and a computer-readable storage medium are also disclosed.