Display Device Automatic 3D to 2D Image Mode Switching

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Solution Overview

Problem

Conventional stereoscopic image display devices based on the naked eye method require user intervention to switch between 3D and 2D images, lacking automatic adaptation to the viewer's situation.

Innovation Solution

A display device equipped with a sensor unit and a control unit that automatically switches between stereoscopic and planar images based on the detected state of the user, using an image sensor and time-of-flight sensor to determine the user's presence and viewing conditions, and adjusts the display accordingly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If automatic switching between stereoscopic and planar images is implemented, then user convenience and adaptability are improved, but device complexity increases due to additional sensors and control units

Engineering Contradiction:

ImproveAutomatic switching between 3D and 2D imagesVSAvoidAddition of sensor unit and control unit

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The control unit performs multiple functions: it controls the display unit to switch between stereoscopic and planar images, manages the sensor unit operations, and processes user state information. This multi-functionality consolidates control logic into a single component, improving ease of operation without proportionally increasing overall device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The display device automatically detects user presence and state through the sensor unit and autonomously switches between 3D and 2D image modes without requiring manual user input. The system serves itself by making intelligent decisions based on detected user conditions, eliminating the need for complex user interfaces or manual switching mechanisms.

Inventive Principle:

Principle #25Self-service

2Adaptability or versatility

If sensors are added to detect user state, then adaptability to user situation is improved, but manufacturing cost and device complexity increase

Engineering Contradiction:

ImproveAdaptation to user presence and viewing conditionsVSAvoidManufacturing cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The sensor unit is designed to perform multiple detection functions simultaneously, including detecting user presence, viewing angle, and environmental conditions. By consolidating multiple sensing capabilities into a single integrated unit, the patent reduces the total number of separate components needed, thereby lowering manufacturing complexity and cost while maintaining high adaptability to user situations.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If automatic image switching is implemented, then viewing experience is improved, but processing requirements and energy consumption increase

Engineering Contradiction:

ImproveAutomatic adaptation to user situationVSAvoidEnergy consumption of control unit and sensors

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The control unit periodically evaluates user state information received from the sensor unit and switches between stereoscopic and planar images based on detected conditions. This periodic evaluation approach allows the system to remain energy-efficient by only actively processing and switching when user conditions change, rather than continuously operating at full processing capacity.

Inventive Principle:

Principle #19Periodic action

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 seamless automatic switching between stereoscopic and planar images without user intervention, enhancing the viewing experience by ensuring the appropriate image mode is displayed based on the user's situation, reducing stress and improving usability.

Implementation Method 1

using an image sensor and time-of-flight sensor to determine the user's presence and viewing conditions

Methodology Applied

Scientific EffectImage sensor detection: Photoelectric Effect

Implementation Method 2

using an image sensor and time-of-flight sensor to determine the user's presence and viewing conditions

Methodology Applied

Scientific EffectTime-of-flight measurement: Time of Flight

Data Source

PatentUS11356653B2Display device, display method, and computer program

Publication Date: 2022.06.07 SONY GROUP CORP

AI summary

A display device capable of automatically switching display of a stereoscopic image and a display of a planar image according to a detected situation of a user is provided.Provided is the display device including a display unit capable of displaying a planar image and a stereoscopic image, and a control unit configured to automatically switch an image to be displayed on the display unit to the planar image or the stereoscopic image, using a detected state of the user.