Stereoscopic Display Privacy via Transmissive Glasses

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Solution Overview

Problem

Conventional stereoscopic image display devices using the glasses method fail to ensure privacy and security as they allow unauthorized viewing of 3D images when the glasses are removed.

Innovation Solution

A stereoscopic image display device with an image control unit that processes left and right eye images to create effective and ineffective image information, displayed on a panel viewable through glasses with the same transmissive characteristic, ensuring only one image is visible to the user wearing the glasses.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the glasses method is used to display stereoscopic images, then the stereoscopic effect is enhanced, but privacy protection is compromised as images can be viewed when glasses are removed

Engineering Contradiction:

Improveprivacy protectionVSAvoidviewing flexibility

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The image is segmented into left eye image and right eye image components. The image control unit processes these separate components and uses the glasses' transmissive characteristics to ensure that only the intended eye receives the corresponding image information, thereby preventing unauthorized viewing while maintaining stereoscopic effect

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies different transmissive characteristics to different parts of the optical path. The glasses are designed with specific transmissive characteristics that allow only certain light paths (left eye to left eye glass, right eye to right eye glass) while blocking other paths, creating local privacy protection zones

Inventive Principle:

Principle #3Local quality

2Reliability

If image processing is performed to create effective and ineffective image information, then privacy protection is improved, but luminance loss increases

Engineering Contradiction:

Improveprivacy protectionVSAvoidluminance loss

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The glasses act as an intermediary element that selectively transmits light based on their transmissive characteristics. Instead of processing the entire image to create ineffective information, the system uses the glasses to filter and direct light, preserving luminance while achieving privacy protection through optical selection

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent changes the transmissive characteristic parameter of the glasses to optimize the balance between privacy protection and luminance transmission. By adjusting the optical properties of the glasses, the system maintains sufficient luminance for effective image viewing while blocking unauthorized viewing paths

Inventive Principle:

Principle #35Parameter changes

3Reliability

If additional privacy protection processes are implemented, then security is improved, but device complexity increases

Engineering Contradiction:

ImprovesecurityVSAvoidprocessing complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system uses the existing transmissive characteristics of the glasses as a self-service privacy protection mechanism. The glasses themselves perform the privacy protection function through their optical properties, eliminating the need for additional complex processing systems or components

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The glasses serve multiple functions: they enable stereoscopic image viewing and simultaneously provide privacy protection. This multi-functionality eliminates the need for separate privacy protection devices or processes, reducing overall system complexity while maintaining security

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

This solution effectively protects user privacy and security by ensuring only the intended user can view the stereoscopic image, while minimizing luminance loss and reducing costs by integrating privacy protection without additional processes.

Implementation Method 1

glasses consisting of a left eye glass and a right eye glass which have the same transmissive characteristic to transmit only one of the left eye image and the right eye image displayed on the image panel

Methodology Applied

Scientific EffectTransmissive characteristic (optical filtering): Filter (optical)

Data Source

PatentUS10261331B2Stereoscopic image display device and driving method thereof

Publication Date: 2019.04.16 LG DISPLAY CO LTD

AI summary

Provided is a stereoscopic image display device which comprises: an image control unit for outputting a left eye image and a right eye image; an image panel for displaying the left eye image and the right eye image; and glasses consisting of a left eye glass and a right eye glass which have the same transmissive characteristic to transmit only one of the left eye image and the right eye image displayed on the image panel.