Display Brightness Compensation for Sliding Tail Elimination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices often exhibit a 'sliding tail' effect during screen dragging, where an abnormal picture appears in the opposite direction of the movement, significantly affecting user experience, particularly when dragging white text on a black background.
Innovation Solution
A method and device for compensating brightness in display devices, which involves acquiring display brightness data, determining brightness coefficients, identifying reference and to-be-compensated frames, and adjusting grayscale values to ensure the display brightness of compensated frames meets a preset threshold, thereby eliminating the sliding tail effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If grayscale value transitions are performed in display devices, then picture switching capability is improved, but sliding tail effect occurs due to brightness inconsistency
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing brightness coefficients for different grayscale transitions before actual display operation. When a grayscale transition is needed, the system retrieves pre-computed compensation values from lookup tables, allowing immediate brightness correction without real-time computation delays, thus preventing sliding tail effects during picture switching.
Solution Approach 2:
The patent changes the brightness parameter dynamically based on grayscale transition requirements. By computing brightness coefficients that represent the ratio of display brightness between different grayscale values, the system adjusts display brightness parameters in real-time during transitions, ensuring brightness consistency and eliminating sliding tail artifacts.
2Reliability
If brightness compensation is applied to eliminate sliding tail, then display quality is improved, but computational complexity increases
Solution Approach 1:
The patent reduces computational complexity by performing brightness coefficient calculations in advance and storing them in lookup tables. During actual display operation, the system only needs to retrieve pre-computed values based on current and target grayscale values, avoiding complex real-time calculations and reducing processing burden while maintaining high display quality.
Solution Approach 2:
The patent uses lookup tables that store pre-computed brightness compensation values as copies of calculation results. Instead of performing complex brightness ratio calculations for every grayscale transition, the system copies relevant compensation values from the lookup table based on grayscale value pairs, significantly reducing computational complexity while ensuring accurate brightness compensation.
Data Source
AI summary
A method and device of compensating a brightness for a display device and a method and device of driving a display device are provided. The method of compensating a brightness includes: acquiring display brightness data of multiple frames of pictures displayed after a display picture of the display device is switched from a first grayscale value to a second grayscale value; determining a brightness coefficient of each frame of picture according to the display brightness data; determining a reference picture and at least one frame of to-be-compensated picture according to the brightness coefficient; and determining a grayscale compensation value, so that a ratio of a display brightness of each frame of to-be-compensated picture displayed by the display device to a display brightness of the reference picture displayed by the display device is greater than or equal to a preset first brightness threshold.