Wireless Audio Role Switching via Signal Quality Metrics
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Solution Overview
Problem
Current wireless audio accessories lack a method to evaluate the quality of connections between devices, leading to potential audio glitches when switching roles, as Bluetooth does not have a standard way to assess connection quality without creating an actual connection, which consumes power and affects other connections.
Innovation Solution
A method where devices exchange connection parameters to determine signal quality metrics, allowing them to assess and switch roles based on primary and secondary signal quality, conserving power and improving audio quality without disrupting existing connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If Bluetooth creates an actual connection to evaluate connection quality, then connection quality can be assessed, but power consumption increases and other connections are affected
Solution Approach 1:
The patent applies preliminary action by having the secondary device listen to communications between the primary device and host device before actually switching roles. This allows the secondary device to evaluate the potential connection quality in advance using connection parameters, without creating a full connection. The device prepares measurement data by monitoring existing traffic, enabling quality assessment without the power cost of establishing new connections.
Solution Approach 2:
The patent uses connection parameters as an intermediary to enable quality assessment. Instead of creating actual connections to measure quality, the devices exchange connection parameters that allow the secondary device to listen and evaluate the host device's transmission characteristics. This intermediary mechanism enables measurement without direct connection establishment.
2Use of energy by moving object
If role switching is performed without evaluating connection quality, then power is conserved, but audio glitches may occur due to poor connection quality
Solution Approach 1:
The patent implements feedback by having devices exchange signal quality metrics and connection information before role switching. The secondary device listens to communications and determines signal quality metrics, then shares this information with the primary device. This feedback loop ensures that role switching only occurs when connection quality is sufficient, preventing audio glitches while avoiding unnecessary power consumption from evaluating poor connections.
Solution Approach 2:
The patent performs preliminary quality evaluation before role switching by having the secondary device monitor communications and assess connection quality in advance. This preliminary assessment ensures that when switching occurs, the new primary device has a reliable connection to the host, maintaining audio quality without wasting power on switches that would result in poor connections.
3Reliability
If multiple devices are arranged in a line with poor connection between phone and primary device, then role switching may improve audio quality, but there is no way to evaluate if the alternative connection is better
Solution Approach 1:
The patent uses connection parameters as an intermediary that enables the secondary device to evaluate the potential connection to the host device without direct connection establishment. These parameters allow the secondary device to listen to and analyze communications between the primary device and host, assessing signal strength and quality metrics that indicate whether switching would improve audio quality.
Solution Approach 2:
The patent enables self-service by allowing the secondary device to autonomously evaluate its own potential connection quality to the host device. The device uses connection parameters to listen and determine signal quality metrics independently, then shares this self-assessed information with the primary device to facilitate informed role switching decisions.
Data Source
AI summary
The present disclosure provides for detection of conditions, and triggering role switch between wirelessly paired devices in response to detection of particular conditions. In response to detection of particular conditions, a primary device may switch roles with a secondary device. Such conditions may include battery level of each device, signal strength of each device, audio buffer levels, whether the devices are being worn by a user, whether a microphone is active, historic data, or any combination of these or other conditions.