Screen Color Temperature Control via Weighted Ambient Light Averaging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Mobile terminals, such as smartphones and tablets, cause eye damage due to sudden changes in screen color temperature during scene transitions, as the screen brightness adjusts rapidly without adapting to human eye sensitivity.
Innovation Solution
A method and device for controlling screen color temperature by acquiring ambient light parameters, calculating ambient relative color temperature, performing a weighted average to determine a target ambient color temperature, and smoothly adjusting the screen color temperature to prevent sudden changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the screen color temperature is directly adjusted to match ambient light changes, then the screen adapts to ambient light conditions, but the sudden adjustment causes eye damage
Solution Approach 1:
The patent applies preliminary action by performing a weighted average calculation on ambient relative color temperature values before adjusting the screen color temperature. The system calculates target ambient color temperature based on historical data and uses this pre-computed value to gradually adjust the screen, preventing sudden brightness changes that would harm the eyes while still achieving adaptation to ambient light conditions.
2Speed
If the screen color temperature adjusts rapidly to ambient light changes, then the response speed is fast, but the human eyes cannot adapt causing damage
Solution Approach 1:
The patent applies dynamics by implementing a dynamic adjustment strategy where the screen color temperature changes gradually over time rather than instantaneously. The system uses a weighted average of historical ambient relative color temperature values to determine the target color temperature, creating a dynamic transition that allows human eyes to adapt while maintaining responsive adaptation to ambient light changes.
3Device complexity
If the screen uses simple ambient light sensing, then the device complexity is low, but the color temperature adjustment causes eye damage
Solution Approach 1:
The patent applies parameter changes by transforming the raw ambient light parameters into ambient relative color temperature values through calculation. The system changes the parameter representation from direct light intensity to color temperature, then applies weighted average processing to these transformed parameters to determine the target screen color temperature, thereby resolving the eye damage issue while maintaining simple sensing hardware.
Data Source
AI summary
Embodiments of the present disclosure is directed to a method of controlling screen color temperature. The method includes: acquiring ambient light parameters according to a preset time interval, obtaining an ambient relative color temperature value corresponding to the ambient light parameter acquired at each acquisition time point, performing a weighted average process on the ambient relative color temperature value corresponding to the ambient light parameter acquired at each acquisition time point to obtain a target ambient color temperature value, determining a target screen color temperature value corresponding to the target ambient color temperature value and further a current screen color temperature value, and changing a color temperature value of the screen from the current screen color temperature value to the target screen color temperature value according to the screen color temperature value change time.