Dual-Vision Display Directional Audio Isolation

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Solution Overview

Problem

In dual-vision display systems, users must wear headphones to avoid audio interference between different video images, causing discomfort and poor user experience due to the inconvenience and head discomfort from long-term use.

Innovation Solution

A dual-vision display device with first and second directional speakers that play audio signals associated with respective video signals in specific view zones, using a positioning module to detect the user's position and adjust the beam axis for directional audio delivery, eliminating the need for headphones by preventing audio interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If headphones are worn to listen to audio in dual-vision display, then audio interference between different video images is avoided, but user convenience deteriorates and head discomfort occurs due to long-term wear

Engineering Contradiction:
Improveaudio signal isolationVSAvoiduser convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The audio output is segmented into multiple directional beams, each corresponding to a specific viewing zone. The display device divides the audio signal delivery into separate spatial channels, so that each user receives audio only from their own viewing zone without interference from other zones, eliminating the need for headphones while maintaining audio isolation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Directional audio technology acts as an intermediary between the audio signal source and the user's ear. Instead of direct coupling through headphones, the audio signal is transmitted through directed sound waves in space that naturally reach only the intended user's listening position, providing isolation without physical contact.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If traditional audio speakers are used in dual-vision display, then audio signals can be played, but audio interference occurs between different video images viewed by different users

Engineering Contradiction:
Improveaudio playback capabilityVSAvoidaudio signal isolation
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The audio system provides different audio quality and delivery characteristics for different spatial locations. Each viewing zone has its own dedicated audio beam with optimized characteristics for that specific direction, ensuring that audio signals are delivered with appropriate isolation and quality tailored to each user's position.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent transitions from traditional omnidirectional audio (two-dimensional sound field) to three-dimensional directional audio beams. By adding the spatial dimension of sound directionality, the system can deliver isolated audio signals to different users simultaneously from different angular positions, preventing cross-contamination between audio channels.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS10564926B2Dual-vision display device and driving method thereof
Publication Date: 2020.02.18 BOE TECHNOLOGY GROUP CO LTD
  • US10564926B2 patent drawing
  • US10564926B2 patent drawing
  • US10564926B2 patent drawing

AI summary

Embodiments of the present disclosure provide a dual-vision display device and a driving method thereof. The dual-vision display device includes: a first directional speaker and a second directional speaker. The first directional speaker is configured for directionally playing a first audio associated with a first video signal when a picture corresponding to the first video signal is viewed in the first view zone. The second directional speaker is configured for directionally playing a second audio associated with a second video signal when a picture corresponding to the second video signal is viewed in the second view zone.