Zone Group Coordinator Selection for Synchronized Audio Playback
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Solution Overview
Problem
Existing media playback systems struggle to efficiently select a group coordinator device for synchronized audio playback across multiple zones, often leading to inefficiencies due to factors like network proximity and device capabilities.
Innovation Solution
A media playback system that selects a group coordinator device based on quantitative evaluations and network configurations, considering factors such as proximity to the network root and device processing capabilities to optimize synchronous rendering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a group coordinator device is selected based on simple criteria, then the selection process is fast and easy, but the synchronization efficiency and audio playback quality deteriorate
Solution Approach 1:
The patent changes the selection parameters from simple criteria to multiple quantitative parameters including network proximity metrics, device capability scores, and current load conditions. This allows the system to evaluate devices comprehensively and select the most suitable coordinator, improving synchronization efficiency while maintaining an automated selection process that remains easy to operate.
Solution Approach 2:
The system implements feedback mechanisms where devices report their status, capabilities, and network conditions to potential coordinators. This feedback loop enables informed decision-making in the coordinator selection process, ensuring that the chosen device can effectively synchronize audio playback across the network while maintaining operational simplicity through automated evaluation.
2Reliability
If the system considers multiple factors for coordinator selection, then the audio playback synchronization improves, but the complexity of the selection process increases
Solution Approach 1:
Each device in the network autonomously evaluates itself and other devices based on predefined criteria for coordinator selection. Devices automatically assess their own capabilities, network conditions, and suitability as coordinators without requiring external intervention or complex centralized management, thereby improving synchronization while keeping the process complexity manageable through self-service evaluation.
Solution Approach 2:
The system performs preliminary evaluations of device suitability for coordinator roles before actual audio playback begins. Devices pre-assess their capabilities, network proximity, and potential performance as coordinators, storing this information for rapid selection when needed. This preliminary action reduces real-time complexity while ensuring reliable synchronization through pre-validated coordinator choices.
3Device complexity
If device capabilities are not evaluated, then the selection process is simpler, but the audio delivery efficiency deteriorates
Solution Approach 1:
The patent introduces device capability evaluation as a key parameter in coordinator selection, assessing processing power, network bandwidth, buffer capacity, and audio rendering capabilities. By changing the selection parameters to include these technical metrics, the system identifies devices best suited for coordinator roles, significantly improving audio delivery efficiency while maintaining a structured evaluation process that remains manageable through standardized criteria.
Data Source
AI summary
Examples described herein involve selecting a group coordinator device for a zone group. An example implementation includes: receiving an instruction to form a zone group comprising the first media device and the second media device; comparing a first one or more communication parameters corresponding to a network connection of the first media device to a second one or more communication parameters corresponding to a network connection of the second media device; identifying the first media device as a group coordinator of the zone group based on at least the indication that the first media device communicates with the router over the first communication frequency band; and configuring the first media device to provide data indicating audio content and audio content playback timing information to the second media device to facilitate synchronous playback of the audio content as the group coordinator of the zone group.