Media Playback Zone Recognition Using Radio Proximity Detection

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Solution Overview

Problem

Existing media playback systems lack the ability to seamlessly transition and configure media playback based on a device's proximity to different zones within a multi-zone environment, leading to a suboptimal user experience in terms of zone identification and media content synchronization.

Innovation Solution

A method and device configuration that utilize radio interfaces, such as Wi-Fi, Bluetooth, or NFC, to determine a device's proximity to specific zones, allowing for dynamic configuration of media playback by displaying zone identifiers and characteristics, and modifying playback accordingly, enabling seamless transitions and synchronization across zones.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a device's proximity to zones is not detected, then the system cannot dynamically configure media playback based on location, but implementing proximity detection increases device complexity

Engineering Contradiction:
Improvedynamic configuration of media playbackVSAvoidproximity detection capability
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system automatically detects device proximity to zones and configures media playback without requiring user intervention. The control device performs self-service by autonomously determining zone proximity through radio interface signals and automatically adjusting playback configuration, eliminating the need for manual zone selection or complex user interactions.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical zone selection with wireless radio interface-based proximity detection. Instead of requiring physical movement of devices or manual configuration, the system uses radio signal strength and presence detection to automatically determine which zone the user is in and configures playback accordingly, substituting mechanical/user-driven zone assignment with automated wireless detection.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Ease of operation

If manual zone selection is required, then users must actively choose zones, but this reduces ease of operation and user experience

Engineering Contradiction:
Improvezone switching operationVSAvoidtime to switch zones
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The system continuously monitors radio interface signals from multiple zones in advance, preparing proximity information before the user needs to switch zones. By maintaining ongoing detection of device proximity to various zones and pre-configuring playback settings based on detected location, the system eliminates the time required for manual zone selection and enables instant, seamless transitions.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system implements continuous feedback by monitoring radio interface signal strength and presence indicators from zones, automatically adjusting media playback configuration based on real-time proximity detection. This feedback loop ensures the system always knows which zone the user is near and automatically configures playback without requiring user action, significantly improving ease of operation and reducing zone switching time.

Inventive Principle:
Principle #23Feedback

Data Source

PatentEP3512208B1Zone recognition
Publication Date: 2021.02.24 SONOS INC
  • EP3512208B1 patent drawingFigure 1
  • EP3512208B1 patent drawingFigure 2~3
  • EP3512208B1 patent drawingFigure 4

AI summary

An example implementation may involve receiving, via a radio interface, a radio transmission indicating a particular playback device of a media playback system. Based on the received radio transmission, the implementation may further involve determining that the device is within a given proximity to a zone of the media playback system that includes the particular playback device. Based on determining that the device is within the given proximity to the zone of the media playback system, the implementation may also involve causing the graphical interface to display an indication of (i) an identifier of the zone and (ii) a characteristic of the zone.