Stereoscopic Display Device Movement Detection and Mode Switching
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Solution Overview
Problem
Portable stereoscopic display devices face issues with maintaining optimal viewing positions due to external factors like device movement, leading to discomfort and symptoms like vertigo and motion sickness, as existing viewpoint tracking systems are bulky and require complex image processing.
Innovation Solution
A display device that detects movement and adjusts the image display to either stereoscopic or planar based on detected movement, using a sensor system to determine if the observer is within the stereoscopic viewing area and switching accordingly to prevent pseudo-stereoscopic and dual image viewing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a parallax barrier or lenticular lens is used to project spatially separate parallax images to left and right eyes, then stereoscopic images can be displayed without requiring special glasses, but the observer can only see proper stereoscopic images in a limited area and may experience dual image or pseudo-stereoscopic effects when eye positions shift
Solution Approach 1:
The patent applies dynamics by making the image display mode changeable based on detected movement. The display device switches between stereoscopic display mode and planar display mode dynamically according to acceleration sensor data, allowing the system to adapt to movement conditions and maintain reliable viewing experience.
Solution Approach 2:
The patent implements feedback by using acceleration sensors to detect device movement and then adjusting the image display mode accordingly. The control unit continuously monitors acceleration data and switches display modes based on whether movement exceeds predetermined thresholds, creating a closed-loop control system that maintains viewing quality.
2Reliability
If viewpoint tracking systems are implemented to maintain optimal viewing positions, then stereoscopic viewing quality can be maintained, but the systems become bulky and require complex image processing
Solution Approach 1:
The patent replaces complex mechanical viewpoint tracking systems with a simpler acceleration sensor-based movement detection system. Instead of using cameras and complex image processing to track viewpoint, the invention uses acceleration sensors to detect device movement and switches display modes accordingly, significantly reducing system complexity.
Solution Approach 2:
The patent extracts only the essential function needed for maintaining viewing quality - movement detection - and implements it through simple acceleration sensors rather than complete viewpoint tracking systems. This extraction approach removes unnecessary complexity while preserving the core benefit of maintaining reliable stereoscopic viewing.
3Adaptability or versatility
If the display device is moved due to external factors like device handling or vehicle movement, then portability is maintained, but the observer may be shifted out of the stereoscopic viewing area causing discomfort and vertigo
Solution Approach 1:
The patent applies preliminary anti-action by detecting device movement in advance and switching from stereoscopic to planar display mode before the observer can be shifted out of the viewing area. This preventive measure eliminates the harmful effect of dual image and pseudo-stereoscopic effects that would otherwise cause discomfort and vertigo.
Solution Approach 2:
The patent provides beforehand cushioning by using acceleration sensors to detect movement and proactively switching display modes to prevent harmful viewing conditions. This prior intervention cushions the observer from experiencing discomfort by maintaining appropriate display modes during device movement.
Data Source
AI summary
Movement of a display device is detected, and an image is displayed in stereoscopic display or planar display depending on the detected movement.