Dynamic Gamma Curve Adjustment for Display Devices
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Solution Overview
Problem
Display devices using a uniform gamma standard fail to account for ambient luminance, leading to poor display effects, especially in varying light environments, as human eyes' sensitivity to luminance changes with ambient conditions, affecting the perception of grayscale values.
Innovation Solution
A display method that dynamically determines a target gamma curve based on ambient and reflection luminance information, adjusting the gamma parameter to optimize the display effect according to the environment, using equations such as L=Lmax[(n+n0)/(N+n0)]γ to ensure consistent visual experience across different brightness levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a unified gamma curve is predetermined in the display device, then the display device can display pixels with uniform standard luminance, but the display effect deteriorates in varying ambient luminance conditions
Solution Approach 1:
The patent applies dynamics by transitioning from a static, predetermined gamma curve to a dynamic gamma curve that automatically adjusts based on ambient luminance conditions. The system detects ambient light levels and selects appropriate gamma values (e.g., gamma=2.2 for bright environments, gamma=2.0 for dark environments) to optimize display performance for each condition, making the display adaptively responsive rather than fixed.
Solution Approach 2:
The patent implements parameter changes by modifying the gamma curve parameter dynamically. Instead of using a single fixed gamma value, the system changes the gamma parameter based on detected ambient luminance conditions. This allows the display to compensate for environmental lighting variations and maintain optimal visual performance across different scenarios.
2Device complexity
If a unified gamma curve is used, then the display device maintains simple structure, but the visual quality deteriorates when ambient luminance changes
Solution Approach 1:
The patent applies self-service by enabling the display device to automatically detect ambient luminance conditions and adjust the gamma curve without user intervention. The system uses ambient light sensors to autonomously determine appropriate gamma values, eliminating the need for manual configuration while maintaining consistent grayscale perception across varying lighting conditions.
Solution Approach 2:
The patent implements feedback by incorporating ambient light detection into the gamma curve adjustment process. The system continuously monitors ambient luminance conditions and uses this feedback information to select or calculate the appropriate gamma curve, creating a closed-loop system that adapts to environmental changes and maintains optimal display quality.
Data Source
AI summary
Provided is a display method which includes: acquiring luminance information of the environment where the display device is currently located, wherein the luminance information includes at least one of ambient luminance information and reflection luminance information; and based on the acquired luminance information, determining a target gamma curve of the display device. A display device and a non-transitory computer-readable computer storage medium are also provided.