3D Display Parallax Adjustment for Motion Sickness
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Solution Overview
Problem
Existing 3D image display devices struggle to adjust parallax effectively, particularly for content without pre-considered parallax angles, leading to user discomfort and motion sickness due to excessive parallax, especially with larger screen sizes.
Innovation Solution
An image display device equipped with a parallax adjustment unit, a parallax detector, and a maximum parallax detector, which adjusts and detects the parallax between right-eye and left-eye image signals, allowing for real-time adjustment and display of optimal parallax levels, thereby minimizing user discomfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the screen size is increased to provide a greater stereoscopic effect, then the stereoscopic effect is improved, but the visual distance decreases and users experience motion sickness or biological discomfort due to excessive parallax
Solution Approach 1:
The patent implements dynamic parallax adjustment by detecting the actual parallax in the input 3D image signal and automatically adjusting the display position of left and right eye images in real-time. This dynamic adaptation allows the system to optimize stereoscopic effect while preventing excessive parallax that causes discomfort, resolving the contradiction between stereoscopic quality and user comfort.
Solution Approach 2:
The system employs feedback mechanisms by detecting the parallax amount in the input signal and using this information to control the display position adjustment. The parallax detection unit continuously monitors the 3D image signal, and the control unit adjusts display parameters based on detected parallax values, creating a closed-loop system that maintains optimal stereoscopic effect without causing user discomfort.
2Manufacturing precision
If the display position of LR images is controlled based on multiplexed control information to achieve optimum stereoscopic vision, then stereoscopic vision is improved, but the method cannot be applied to movies and Blu-Ray content where control information is not multiplexed
Solution Approach 1:
The system performs self-service by automatically detecting parallax from the input 3D image signal itself without requiring external control information. The parallax detection unit analyzes the LR image signals directly to determine parallax amounts, enabling the system to adapt to any content type (movies, Blu-Ray, broadcast) that provides 3D signals, thus achieving universal compatibility while maintaining optimal stereoscopic vision.
3Object-affected harmful factors
If parallax adjustment is implemented to reduce user discomfort, then user comfort is improved, but the device complexity increases due to additional detection and adjustment units
Solution Approach 1:
The patent integrates multiple functions into unified units: the parallax detection unit simultaneously serves to analyze input 3D signals and provide data for both adjustment operations, while the control unit handles both automatic parallax-based adjustment and manual user-preferred adjustment. This multi-functionality reduces the need for separate dedicated components, mitigating the increase in device complexity while maintaining comprehensive parallax adjustment capabilities.
Data Source
AI summary
An image display device which includes a parallax adjustment unit, a display unit, a parallax detector, and a maximum parallax detector. The parallax adjustment unit is configured to obtain a right-eye image signal and a left-eye image signal. The parallax adjustment unit is configured to adjust a parallax between the right-eye image signal and left-eye image signal and output an adjusted image signal that includes an adjusted left-eye and adjusted right-eye signal. The parallax detector is configured to detect an amount of parallax between the right-eye and left-eye image signals. The maximum parallax detector is configured to detect a maximum value. The display unit is configured to display a right-eye image and a left-eye image and to display an augmented image including the right-eye image and the left-eye image as well as a monitor image indicating the amount of parallax detected and the maximum value.