Optical Compensation System for Display Smear Correction
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Solution Overview
Problem
Display devices often face issues with image quality due to pixel imbalances and other factors, leading to problems that conventional optical compensation methods are unable to fully address, particularly when output gray scales exceed the maximum allowable level.
Innovation Solution
An optical compensation system and method that includes a controller for performing primary and secondary optical compensation, where the controller calculates specific compensation ratios to adjust input gray scales, ensuring that output gray scales are within the maximum limit by applying different ratios based on the differences between input and output gray scales, and generates modified image data using both primary and secondary compensation data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If primary optical compensation is applied to all brightness data, then image quality is improved, but output gray scales may exceed the maximum gray scale causing display errors
Solution Approach 1:
The patent divides the optical compensation process into two distinct stages: primary optical compensation applied to all brightness data, and secondary optical compensation applied only to specific sections where output gray scales exceed the maximum. This segmentation allows the system to maintain high image quality through comprehensive compensation while preventing display errors by locally adjusting only the problematic sections.
Solution Approach 2:
The patent applies different compensation strategies to different sections of the image data. The secondary optical compensation section is specifically targeted at areas where primary compensation causes gray scale overflow, while the remainder sections use only primary compensation. This local quality approach ensures that compensation is optimized for each specific region's needs.
2Device complexity
If conventional optical compensation methods are used, then processing simplicity is maintained, but they cannot fully address pixel imbalances and gray scale overflow issues
Solution Approach 1:
The patent implements a dynamic compensation system that automatically adjusts the compensation approach based on the specific characteristics of each image section. The controller identifies sections requiring secondary compensation and applies appropriate compensation ratios dynamically, rather than using a fixed conventional method throughout the entire image.
Solution Approach 2:
The patent changes the compensation parameters (compensation ratios) based on the specific needs of different image sections. By calculating and applying different compensation ratios for primary and secondary compensation sections, the system achieves higher pixel balance accuracy while maintaining manageable processing complexity.
Data Source
AI summary
An optical compensation system includes a display unit including a plurality of pixels, an image pick-up unit for capturing an image displayed on the display unit, and a controller for obtaining brightness data from the image, for performing primary optical compensation on all of the brightness data to generate primary compensation data, and for performing secondary optical compensation such that an output gray scale is less than a maximum gray scale to generate secondary compensation data when the primary compensation data includes at least one output gray scale exceeding a maximum gray scale.