Wavelength-Separated Video Display for Multi-Viewer Isolation

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Solution Overview

Problem

Conventional displays cannot provide different visual information to multiple viewers simultaneously without using complex and expensive systems, and audio is typically limited to a single source, restricting the ability to offer personalized content to each user.

Innovation Solution

A system utilizing distinct wavelength bands and optical filters, such as LCD shutter glasses, to display and process separate video feeds on a common monitor, allowing each viewer to see and hear only their intended content by filtering out the other feed's wavelengths.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a common display is used to provide video content to multiple viewers, then device complexity and cost are reduced, but each viewer can only see the same content without personalization

Engineering Contradiction:

Improvedisplay system complexityVSAvoidcontent personalization capability

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The display output is segmented into distinct wavelength bands (e.g., red and blue) that can be selectively filtered by each viewer's glasses. The video feeds are also segmented into corresponding wavelength ranges, allowing each viewer to perceive only their intended content while sharing the same physical display device.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different portions of the video content are assigned different wavelength characteristics (red vs. blue ranges). Each viewer's optical filter is tailored to pass only their designated wavelength range, creating localized quality differentiation in the perceived content while using a single display device.

Inventive Principle:

Principle #3Local quality

2Adaptability or versatility

If multiple video feeds are displayed simultaneously on a single display, then content variety for multiple viewers is improved, but visual interference between feeds occurs

Engineering Contradiction:

Improvemultiple content delivery capabilityVSAvoidvisual interference between video feeds

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The video feeds are encoded with distinct color/wavelength characteristics (one feed in red wavelength range, another in blue wavelength range). The display simultaneously presents both feeds with their respective wavelength signatures, and each viewer's optical filter selectively passes only their assigned wavelength range, eliminating visual interference between concurrent video feeds.

Inventive Principle:

Principle #32Color changes

3Adaptability or versatility

If optical filters with distinct wavelength bands are used to separate video feeds for different viewers, then content isolation between viewers is improved, but the system complexity increases

Engineering Contradiction:

Improveviewer content isolationVSAvoidoptical filtering system complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent replaces complex mechanical or electronic switching systems with a simpler optical filtering approach. By using passive optical filters (glasses) with wavelength-selective properties and encoding video feeds with corresponding wavelength ranges, the system achieves content isolation without requiring complex active control mechanisms.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

Enables multiple viewers to independently view and listen to different video feeds or games on a single display without interference, enhancing user experience and flexibility in content delivery.

Implementation Method 1

a first of the viewers viewing the display using a first filter passing through the first wavelength band and not passing the second wavelength band

Methodology Applied

Scientific EffectOptical filtering: Filter (optical)

Implementation Method 2

a second of the viewers viewing the display using a second filter passing through the second wavelength band and not passing the first wavelength band

Methodology Applied

Scientific EffectOptical filtering: Filter (optical)

Data Source

PatentUS8665291B2System and method of displaying multiple video feeds

Publication Date: 2014.03.04 SONY INTERACTIVE ENTERTAINMENT LLC

AI summary

Respective video feeds are provided to at least two viewers using a common display. The display is controlled to simultaneously display an image from a first video feed and an image from a second video feed. The image from the first video feed is displayed within a first wavelength band and the image from the second video feed is displayed within a second wavelength band, and the first and second wavelength bands are distinct. A first filter is selective for transmitting the first wavelength band and not transmitting the second wavelength band. A second filter is selective for transmitting the second wavelength band and not transmitting the first wavelength band. Only the first video feed image is provided to a first viewer using the first filter, and only the second video feed image is provided to a second viewer using the second filter.