Screen Brightness Adjustment to Reduce Refresh-Rate Flicker
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Solution Overview
Problem
The rapid change in screen refresh rate causes noticeable flickering, leading to user discomfort and a poor experience.
Innovation Solution
Adjust screen brightness by progressively decreasing or increasing it in increments until the difference between the brightness at different refresh rates is below a flicker threshold, using methods such as user interface or automation, to minimize perceptible flicker.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the screen refresh rate changes rapidly to match the frame rate output, then the screen can display variable refresh rates, but the user notices flickering and experiences discomfort
Solution Approach 1:
The patent changes the brightness parameter of the screen in conjunction with refresh rate changes. When the refresh rate varies, the system adjusts the brightness level to compensate for the visual flicker effect, thereby maintaining user comfort while preserving variable refresh rate functionality
Solution Approach 2:
The patent converts the harmful flicker effect into a beneficial outcome by using brightness adjustment as a compensatory measure. The brightness change counteracts the visual disturbance caused by rapid refresh rate variations, transforming what would be a harmful flicker into an acceptable or even imperceptible transition
2Object-affected harmful factors
If the brightness is adjusted to reduce flicker perception, then user experience improves, but the brightness difference between different refresh rates must be precisely controlled
Solution Approach 1:
The patent implements a feedback mechanism where the system monitors the refresh rate changes and automatically adjusts the brightness accordingly. This closed-loop control ensures that the brightness difference remains within an optimal range to minimize flicker perception without requiring manual precision control
Solution Approach 2:
The system performs self-adjustment of brightness based on the detected refresh rate variations. The screen automatically modifies its brightness parameter in response to refresh rate changes, eliminating the need for external intervention or complex manual calibration while maintaining optimal flicker reduction
Data Source
AI summary
An adjustment method of screen brightness comprises the following steps. Step (a): obtaining a relationship between a brightness and refresh rate of the screen. Step (b): adjusting the screen to a highest refresh rate and displaying an image at a first brightness. Step (c): decreasing the first brightness by a unit brightness value and variably displaying the image between a first refresh rate and a second refresh rate. Step (d): determining whether the image does not flicker; if not, repeating step (c). Step (e): calculating a first brightness difference between a decreased brightness of the screen and a brightness corresponding to a lowest refresh rate when the image does not flicker. Step (f): determining whether the first brightness difference is less than a screen flicker threshold; if yes, decreasing the first brightness corresponding to the highest refresh rate to obtain an adjusted brightness corresponding to the highest refresh rate.