Auto-stereoscopic Display Pixel Width Adjustment for Viewing Distance Adaptation
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Solution Overview
Problem
Auto-stereoscopic display technologies face limitations in providing a wide viewing angle, often resulting in abnormal images and eyestrain for users positioned at distances different from the reference visible distance, leading to suboptimal three-dimensional image perception.
Innovation Solution
The method involves detecting user positions to determine a target visible distance and adjusting the pixel unit width by adding or removing dummy pixels, allowing the auto-stereoscopic display apparatus to project viewpoint sets to a viewing zone at the target distance, thereby broadening the viewing range and ensuring undistorted three-dimensional image perception across varying user positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display apparatus uses a fixed reference visible distance for projecting viewpoint sets, then the three-dimensional image can be displayed at a specific distance, but users positioned at different distances experience abnormal images and eyestrain
Solution Approach 1:
The patent applies dynamics by making the pixel unit width adjustable rather than fixed. The system dynamically changes the pixel unit width based on the detected user position and target visible distance, allowing the display to adapt to different viewing distances while maintaining proper three-dimensional image perception and reducing distortion for users at various positions
Solution Approach 2:
The patent changes the parameter of pixel unit width to resolve the contradiction. By varying the pixel unit width according to the target visible distance, the system can project viewpoint sets appropriately for users at different distances, thereby improving viewing angle adaptability while maintaining image quality reliability
2Adaptability or versatility
If the pixel unit width is kept constant, then the display structure is simple, but the viewing range is limited and users at different distances experience distorted images
Solution Approach 1:
The system introduces dynamic adjustment of pixel unit width based on user position detection and target visible distance calculation. This dynamic mechanism expands the viewing range to accommodate users at different distances while the complexity is managed through automated control based on detected parameters
Solution Approach 2:
The patent implements feedback by using user position detection to determine the target visible distance, which then feeds back into the pixel unit width adjustment process. This closed-loop system automatically adapts the display parameters to match user position, expanding viewing range while managing complexity through intelligent control
3Adaptability or versatility
If dummy pixels are added to compensate for distance variations, then the viewing angle is widened and image distortion is reduced, but the pixel unit width increases
Solution Approach 1:
The patent uses parameter changes by adjusting the pixel unit width parameter in response to detected distance variations. Dummy pixels are added or removed to compensate for distance differences, changing the effective pixel unit width to maintain proper viewing angle and reduce distortion while accommodating users at various distances
Data Source
AI summary
A method of driving an auto-stereoscopic display apparatus includes detecting a position of a user to determine a target visible distance, determining at least one original pixel unit having a first unit width based on the target visible distance, wherein the pixel unit includes a plurality of pixel sets in a row, each pixel set including N pixels, comparing the target visible distance to a predetermined reference visible distance of the auto-stereoscopic display apparatus, and converting the original pixel unit to a compensated pixel unit having a second unit width different from the first unit width to project viewpoint sets through the N pixels to a viewing zone at the target visible distance.