Display Refresh Rate Control for Flicker-Free Low Power
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Solution Overview
Problem
Reducing the refresh rate of a display screen to lower power consumption at low brightness levels often results in flickering and affects user experience, as existing methods do not effectively manage the transition without compromising display quality.
Innovation Solution
A control method and electronic device that adjust the refresh rate to a target refresh rate when the brightness level is below a certain threshold, ensuring at least two adjacent display data points remain the same, thereby extending the time interval for data generation and reducing power consumption without causing flickering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the refresh rate of the display screen is reduced to lower power consumption at low brightness levels, then power consumption is reduced, but the display screen exhibits flickering and affects user experience
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the refresh rate based on brightness level. When brightness is below a threshold, the refresh rate is reduced to a target refresh rate to lower power consumption. The system monitors brightness levels and switches between different refresh rates accordingly, resolving the contradiction between power saving and display quality through adaptive parameter adjustment.
2Loss of energy
If the refresh rate is switched when the display screen is in low brightness level, then power consumption is reduced, but the screen flickers and user experience is affected
Solution Approach 1:
The patent implements preliminary action by pre-defining a target refresh rate that is lower than the current refresh rate but higher than the minimum refresh rate. When brightness level drops below the threshold, the system transitions to this pre-planned target refresh rate, which is optimized to balance power consumption and prevent flickering. This preliminary preparation allows smooth transition without harmful effects.
3Use of energy by stationary object
If the refresh rate is reduced to extend the time interval for data generation, then power consumption is reduced, but data freeze and flickering occur
Solution Approach 1:
The patent applies dynamics by making the refresh rate adjustable rather than fixed. The system dynamically switches between a current refresh rate (when brightness is sufficient) and a target refresh rate (when brightness is low). This dynamic adjustment allows the system to extend the time interval for data generation when needed for power saving, while maintaining the ability to switch back to prevent data freeze and flickering.
Data Source
AI summary
A control method includes obtaining a brightness level parameter of a display screen, controlling a refresh rate of the display screen at a target refresh rate if the brightness level parameter is less than or equal to a target brightness level, and obtaining display data based on a target time interval corresponding to the target refresh rate. The display data obtained based on the target time interval includes at least two adjacent display data that are the same.