Display Device Audio Channel Setup Using Speaker Location Detection

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Solution Overview

Problem

Existing display devices struggle to automatically configure optimal audio channels for multiple external speakers based on their location, type, and installation environment, requiring user intervention and knowledge for setup.

Innovation Solution

A display device with a controller that establishes the role of each external speaker using location, sound pressure, and reproduction band, utilizing Bluetooth signal strength, AOA/AOD, and user viewing location to optimize audio channels, and provides a guide for speaker arrangement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If automatic configuration of audio channels is implemented, then ease of operation is improved, but device complexity increases

Engineering Contradiction:

Improveease of speaker setupVSAvoidconfiguration system complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The system automatically detects speaker locations, determines optimal audio channel assignments, and configures the multi-channel audio system without user intervention. The controller autonomously performs speaker identification, location detection, and channel mapping based on detected speaker positions and characteristics.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system performs preliminary detection of speaker locations and characteristics before audio playback begins. The controller detects speaker positions and pre-configures audio channels in advance, preparing the audio system before the user needs to use it.

Inventive Principle:

Principle #10Preliminary action

2Ease of operation

If manual configuration of speaker positions is required, then manufacturing precision is maintained, but ease of operation deteriorates

Engineering Contradiction:

Improvespeaker arrangement easeVSAvoidspeaker location accuracy

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The system replaces manual mechanical positioning with automated detection using wireless communication signals. The controller detects speaker locations through Bluetooth signal strength and AOA/AOD techniques, substituting manual placement with electronic detection and automatic configuration.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system uses feedback from wireless signal detection to automatically adjust audio channel assignments. The controller continuously monitors speaker locations through signal detection and dynamically configures audio channels based on the detected positions, ensuring optimal sound distribution.

Inventive Principle:

Principle #23Feedback

3Productivity

If automatic detection of speaker characteristics is implemented, then productivity is improved, but measurement precision requirements increase

Engineering Contradiction:

Improvesetup speedVSAvoidspeaker characteristic detection accuracy

Core Design Contradiction:

ProductivityVSMeasurement precision

Solution Approach 1:

The system replaces manual speaker characterization with automated electronic detection. The controller uses wireless communication interfaces to detect speaker locations, signal strengths, and characteristics automatically, eliminating the need for manual measurement while maintaining detection accuracy.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system uses wireless communication signals as an intermediary to detect speaker characteristics. The Bluetooth and other wireless signals serve as mediators that carry information about speaker locations and characteristics, allowing indirect but accurate detection without direct physical measurement.

Inventive Principle:

Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Facilitates easy setup of an optimal multi-channel stereophonic sound system by automatically configuring audio channels and suggesting speaker positions, reducing user effort and time in setting up external speakers.

Implementation Method 1

The controller is configured to obtain a Bluetooth signal strength of each of the plurality of external speakers, and obtain distance information between the display device and the external speaker based on the Bluetooth signal strength.

Methodology Applied

Scientific EffectBluetooth signal strength detection: Electromagnetic Induction

Implementation Method 2

obtain distance information between the display device and the external speaker based on the strength of a wireless communication signal

Methodology Applied

Scientific EffectSignal strength-based distance measurement: Electromagnetic Induction

Implementation Method 3

The controller is configured to obtain direction information of the external speaker using at least one of AOA (Angle of Arrival) and AOD (Angle of Departure).

Methodology Applied

Scientific EffectAngle of Arrival detection: Electromagnetic Induction

Data Source

PatentEP4013073B1Display device and operation method of same

Publication Date: 2025.10.01 LG ELECTRONICS INC

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AI summary

A display device according to an embodiment of the present disclosure is to provide a display device for automatically configuring an audio channel suitable for a location of each of a plurality of external speakers when the plurality of external speakers are connected, and an operating method thereof, which establish each of the plurality of external speakers and transmit audio signals to the plurality of external speakers according to the established roles.