TWS Earbuds Clock Sync via Storage Box Link
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Solution Overview
Problem
True Wireless Stereo (TWS) technology faces challenges in effectively synchronizing audio streams between multiple slave devices and a master device, particularly in establishing reliable frequency hopping and clock synchronization, especially when devices are in a storage and charging state.
Innovation Solution
The method involves using a shared wired or wireless link between the first and second wireless transceivers for clock synchronization and sharing sniff enabling information before establishing a bi-directional wireless link with the master device, allowing for efficient communication and synchronization, even when devices are in a storage and charging state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If devices are in storage and charging state without establishing wireless links, then power consumption is reduced and device longevity is improved, but clock synchronization and frequency hopping parameters cannot be established
Solution Approach 1:
The patent performs clock synchronization and exchanges frequency hopping parameters (FHS packets) while devices are in the storage box before actual use. This preliminary action ensures that all synchronization data is pre-established, allowing devices to remain in low-power sleep mode during storage while maintaining readiness for immediate wireless connection when removed from the box.
2Adaptability or versatility
If multiple Bluetooth devices perform inquiry and paging procedures simultaneously, then device discovery capability is improved, but connection establishment time increases and synchronization difficulty increases
Solution Approach 1:
The patent performs device discovery, inquiry, and pairing procedures while devices are still in the storage box. By completing all connection establishment steps preliminarily, the system eliminates the need for repeated inquiry and paging procedures when devices are actually used, significantly reducing connection establishment time during operational use.
Solution Approach 2:
The storage box acts as an intermediary device that facilitates communication between multiple TWS devices. The box provides a shared communication medium that enables all devices to exchange FHS packets and synchronize clocks simultaneously without the conflicts that would arise from traditional peer-to-peer inquiry procedures.
3Measurement precision
If frequency hopping parameters are exchanged during active wireless communication, then synchronization accuracy is maintained, but connection stability decreases when devices enter and exit storage state
Solution Approach 1:
The patent exchanges all frequency hopping parameters and clock synchronization data while devices are in the stable storage box environment. This preliminary parameter exchange creates a robust synchronization foundation that remains valid across power cycles and storage states, eliminating connection instability that would otherwise occur when parameters are renegotiated during active use.
Data Source
AI summary
A wireless audio system that may include a first wireless transceiver that is configured to receive audio information from an audio source over a bi-directional wireless link; a second wireless transceiver that is configured to sniff audio information sent over the bi-directional wireless link; and wherein the first and second wireless transceivers are configured to share sniff enabling information, over a shared link and before an establishment of the bi-directional wireless link.