Headset Charging Data Transmission System Multiplexing
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Solution Overview
Problem
Traditional headset charging and data transmission systems require separate charging and data transmission lines, leading to bulkiness due to multiple contacts.
Innovation Solution
A charging and data transmission system that uses a controller, switching devices, and voltage input terminals to transmit data on the power rail without additional lines, allowing the headset to charge and transmit data simultaneously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate charging lines and data transmission lines are used, then reliable charging and data transmission functions are achieved, but the headset becomes bulky and has many contacts
Solution Approach 1:
The patent combines charging and data transmission functions into a single integrated connector. The switching device multiplexes the power transmission path to carry both power signals and data signals alternately, eliminating the need for separate data transmission lines and reducing the number of contacts in the headset connector.
Solution Approach 2:
The power transmission line is designed to serve multiple functions: it can transmit power continuously or alternately with data signals based on control signals. The switching device enables the same physical path to be used for both charging and data transmission, making the system multi-functional and reducing structural complexity.
2Reliability
If separate charging lines and data transmission lines are used, then stable power supply and data exchange are ensured, but the number of contacts increases
Solution Approach 1:
The patent merges multiple functions into a single contact structure. The switching device controls the alternation between power transmission and data transmission through the same contact path, reducing the number of physical contacts required while maintaining functional reliability through time-division multiplexing.
Solution Approach 2:
The system uses periodic switching between power transmission mode and data transmission mode. The switching device alternates the connection state based on control signals, enabling the same contact to serve different functions at different time intervals, thereby reducing the total number of contacts needed.
Data Source
AI summary
The present disclosure provides a headset charging and data transmission system, which includes a headset and a charging device. The charging device includes a first controller, a first connector, a first switching device, and a second switching device. The first switching device is electrically connected to the first controller and the first connector, and the second switching device is electrically connected to the first controller and the first switching device. The first controller controls the second switching device to switch between the first and second voltages to provide a first data signal for the first switching device, so that the first data signal is output to the headphones via the first connector.