Display Control System for Refractive Error Correction
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Solution Overview
Problem
Users with vision defects face difficulties in reading electronic visual displays due to the need for constant adjustment of text and image sizes, as glasses are not always conveniently available or forgotten when viewing these displays.
Innovation Solution
A method and system that captures an image of the user to detect the presence of spectacles, identifies readable and non-readable content, and applies refractive error correction factors to adjust the display content accordingly, eliminating the need for vision-correction articles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If users wear spectacles with error corrected lenses for reading text or viewing images at close range, then reading clarity is improved, but convenience deteriorates because glasses are worn intermittently and may not be conveniently available or forgotten
Solution Approach 1:
The patent replaces the mechanical/optical correction system (spectacles with lenses) with an electronic display control system. The display device itself adjusts its output to compensate for the user's refractive error by calculating and applying appropriate scaling factors to text and image content, eliminating the need for physical corrective lenses.
Solution Approach 2:
The system changes the display parameters (text size, image scaling, focal distance simulation) based on the detected refractive error of the user. By dynamically adjusting these display parameters, the system provides clear viewing for users with vision defects without requiring them to wear spectacles.
2Measurement precision
If users manually alter the size of text or images to address reading difficulties, then readability of specific content is improved, but operational complexity increases due to the need for constant adjustment
Solution Approach 1:
The display system performs self-adjustment by automatically detecting the user's refractive error through image analysis and autonomously modifying the display content. The system serves itself by implementing the correction without requiring manual user intervention, thus improving readability while maintaining operational simplicity.
Solution Approach 2:
The system employs feedback mechanisms by continuously analyzing images of the user (detecting presence of spectacles, estimating refractive error) and using this information to automatically adjust display parameters. This closed-loop feedback system ensures optimal readability without requiring manual adjustments from the user.
3Adaptability or versatility
If display content is adjusted for users with vision defects, then accessibility is improved, but system complexity increases due to need for detection and correction mechanisms
Solution Approach 1:
The display device integrates multiple functions into a single system: it serves as both the content display device and the vision correction device. By incorporating image sensing capabilities and automated adjustment algorithms, the universal display system can serve both users with and without vision defects, improving accessibility without requiring separate dedicated correction devices.
Data Source
AI summary
The present disclosure relates to a method and a system for controlling display of content to user. In one embodiment, an input image of the user is captured and processed to detect the presence of spectacles in the input image. On detecting the absence of spectacles, the content available for display is processed to identify readable and non-readable content and refractive error correction factor for the non-readable content is determined. Based on the determined refractive error correction factor, the display of both the readable and non-readable content is controlled and the content is displayed.