Screen Color Conversion via Black Body Radiation Locus
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Solution Overview
Problem
Existing screen color conversion methods for reducing blue light emission, such as adjusting RGB ratios or using hardware filters, often result in flicker and jitter due to sensitivity to white light, compromising user experience and eye protection.
Innovation Solution
A method and apparatus that determine a target correlated color temperature and corresponding RGB coefficients based on a relation curve and conversion matrix, using a black body radiation locus to smoothly adjust screen colors, thereby reducing blue light emission while maintaining color accuracy and natural white standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If RGB ratios are adjusted to reduce blue light emission, then blue light reduction is achieved, but screen flicker and jitter occur due to white light sensitivity
Solution Approach 1:
The patent applies parameter changes by transitioning from simple RGB ratio adjustment to correlated color temperature (CCT)-based color conversion. By changing the parameter from direct RGB manipulation to CCT-driven conversion using conversion matrices and relation curves, the system achieves smooth color transitions that reduce blue light while avoiding flicker and jitter, resolving the contradiction between blue light reduction and screen stability.
2Object-affected harmful factors
If hardware filters are used to filter blue lights, then blue light reduction is achieved, but cost increases significantly
Solution Approach 1:
The patent replaces the mechanical/hardware filter system with a software-based color conversion system. Instead of using physical filters that block blue light (which increase cost and complexity), the invention uses algorithms that convert colors through CCT transformation, achieving the same blue light reduction effect at lower cost and with better manufacturability.
3Measurement precision
If blue light control levels are divided into dozens of levels, then blue light adjustment precision is improved, but adjustment smoothness deteriorates due to human eye sensitivity to white light
Solution Approach 1:
The patent applies dynamics by implementing continuous, smooth color transitions through CCT-based conversion rather than discrete level jumps. The system dynamically adjusts colors along a continuous relation curve, making the transition imperceptible to human eyes while maintaining precise blue light control, thus resolving the contradiction between precision and smoothness.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach increases the number of color adjustment levels, improving the smoothness and accuracy of color transitions, reducing screen flicker and jitter, and enhancing user experience by providing a more natural and protective blue light control mode.
Implementation Method 1
using a black body radiation locus to smoothly adjust screen colors
Data Source
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AI summary
The present disclosure provides a screen color conversion method, a screen color conversion apparatus, and a storage medium. The method includes when an adjustment operation for a correlated color temperature of a color in a screen is triggered, determining (102) target Red-Green-Blue (RGB) coefficients according to a relation curve between the RGB coefficients and a correlated color temperature, and a target correlated color temperature corresponding to the adjustment operation. The relation curve reflects a relation between a tristimulus value of a white color displayable for the screen and a correlated color temperature determined based on a black body radiation locus, and a target conversion matrix between the tristimulus value and the RGB coefficients. The method further includes converting (103) the color in the screen to a target color corresponding to the target correlated color temperature according to the target RGB coefficient.