Playback Communication Routing for Low-Power Mode Switching

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Solution Overview

Problem

Existing networked media systems face inefficiencies in managing communication routes, particularly in preventing triangular routing and conserving battery power in battery-powered devices, which limits the flexibility and energy efficiency of multimedia playback devices.

Innovation Solution

The system employs both direct and non-direct communication routes based on device modes, specifically entering a low power mode to conserve battery power by eliminating direct routes and utilizing non-direct routes, and periodically receiving messages from a master device to exit low power mode.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If direct communication routes are used between playback devices, then communication efficiency is improved, but battery power is consumed faster

Engineering Contradiction:
Improvecommunication efficiencyVSAvoidbattery power consumption
Core Design Contradiction:
ProductivityVSUse of energy by moving object

Solution Approach 1:

The system dynamically switches communication routes based on operational context. During low-power operation, the system transitions from direct peer-to-peer routes to indirect routes through a gateway device, reducing wireless interface activity and power consumption while maintaining communication functionality.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes the operational state of the wireless interface by entering low-power mode, which modifies communication parameters such as route selection and interface activity levels, thereby reducing power consumption while maintaining essential communication capabilities.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If battery-powered devices maintain constant communication readiness, then system responsiveness is improved, but battery life is reduced

Engineering Contradiction:
Improvesystem responsivenessVSAvoidbattery life
Core Design Contradiction:
ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The system implements periodic communication cycles where the wireless interface alternates between active and low-power states. The device periodically checks for messages or control signals from gateway devices, maintaining essential responsiveness while significantly reducing average power consumption compared to continuous operation.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The playback device autonomously manages its power state by monitoring operational conditions and automatically transitioning to low-power mode when appropriate, eliminating the need for continuous high-power operation while maintaining system functionality through automated state management.

Inventive Principle:
Principle #25Self-service

3Reliability

If wireless interfaces are actively managed and updated, then communication reliability is improved, but energy consumption increases

Engineering Contradiction:
Improvecommunication reliabilityVSAvoidenergy consumption
Core Design Contradiction:
ReliabilityVSLoss of energy

Solution Approach 1:

The system extracts critical communication functions from the battery-powered playback device and relocates them to a gateway device that is always connected to the network. This allows the playback device to minimize wireless interface activity and power consumption while the gateway handles complex routing and communication management.

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentUS20250219930A1Communication Based on Operation Mode
Publication Date: 2025.07.03 SONOS INC
  • US20250219930A1 patent drawing
  • US20250219930A1 patent drawing
  • US20250219930A1 patent drawing

AI summary

Embodiments are provided for utilizing communication routes based operation mode. In an example implementation, while operating in a first operation mode, a playback device may communicate with a second playback device of the networked media system via a first route and a second route. The playback device may determine that the first playback device is to enter a second operation mode. Responsive to the determination, the playback device may (i) transmit, to the second playback device, a message to cause the second playback device to cease communication with the first playback device via the first route, and (ii) operate in the second operation mode.