TWS Earpiece Role Switching for Power Balance
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Solution Overview
Problem
In true wireless stereo (TWS) Bluetooth headsets, there is an imbalance in power consumption between the primary and secondary earpieces due to unequal data transmission loads, and existing solutions fail to effectively switch or backup between them, leading to inefficient battery life and user experience.
Innovation Solution
The proposed solution involves a communication method where both earpieces can control the Bluetooth connection with the data source device, with alternating roles based on cyclical or on-demand switching, allowing either earpiece to act as the primary for data transmission, thereby balancing the workload and extending battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the primary earpiece establishes Bluetooth connection with both the data source device and the secondary earpiece for data forwarding, then wireless stereo functionality is achieved, but the primary earpiece experiences unbalanced power consumption due to larger data transmission load
Solution Approach 1:
The patent implements dynamic role switching between primary and secondary earpieces. The secondary earpiece can actively intercept Bluetooth data from the data source device under certain conditions, transforming the static master-slave relationship into a dynamic system where either earpiece can serve as the primary data receiver, thereby balancing power consumption across both devices.
2Use of energy by moving object
If the secondary earpiece performs passive interception of Bluetooth data from the data source device, then data transmission load is reduced, but power consumption imbalance between earpieces remains and switching capability is lost
Solution Approach 1:
The patent inverts the traditional passive interception model by enabling the secondary earpiece to actively intercept Bluetooth data from the data source device when conditions permit. This inversion transforms the secondary earpiece from a purely passive device to one that can actively manage data reception, reducing its power consumption while maintaining switching capability through bidirectional communication protocols.
3Device complexity
If the primary earpiece handles all Bluetooth data transmission with the data source device, then communication simplicity is maintained, but the system lacks effective switching or backup capability between earpieces
Solution Approach 1:
The patent implements multi-functionality in both earpieces by equipping them with dual capabilities: (1) establishing direct Bluetooth connections with the data source device, and (2) communicating with each other via peer-to-peer Bluetooth links. This universal design allows either earpiece to independently handle data reception and forwarding, providing both communication flexibility and reliable switching/backup capability without significantly increasing protocol complexity.
Data Source
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AI summary
Disclosed is a Bluetooth headset device and a communication method for the same. The method comprises: establishing by a first earpiece serving as a Bluetooth master device a Bluetooth connection with a data source device; establishing by the first earpiece and a second earpiece a wireless connection therebetween; and according to a preset cyclicity, exchaning by the first and second earpieces control information within a first time period, sending by one of the first and second earpieces that serves as a primary earpiece a Bluetooth transmission request to the data source device, and receiving by the first and second earpieces simultaneously Bluetooth data sent by the data source device in response to the request, within a second time period, wherein the role of the primary earpiece is switched between the first and second earpieces in an alternate mode or a switching on-demand mode based on the control information.