Dynamic Refresh Rate Adjustment for Display Frame Stability
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Solution Overview
Problem
Multifunctional mobile devices face issues with unstable image frame drawing, leading to latency differences and abnormal display due to insufficient refresh rates, necessitating a method to enhance overall display performance.
Innovation Solution
A method involving a host processor and display panel that dynamically adjusts the refresh rate through frame skipping, where the processor checks for consecutive skipped images and skips the latest image if the count exceeds a threshold, ensuring smooth display by maintaining the expected next image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the screen refresh rate is maintained at a high level, then display smoothness is improved, but image frame drawing stability deteriorates when application cannot generate frames fast enough
Solution Approach 1:
The system dynamically adjusts the refresh rate based on the application's frame generation capability. When frame drawing is unstable, the refresh rate is lowered to match the actual frame generation speed, preventing display anomalies. This dynamic adaptation resolves the contradiction by making the refresh rate flexible rather than fixed, allowing it to optimize between smoothness and stability in real-time.
Solution Approach 2:
The invention changes the refresh rate parameter according to the detected frame drawing stability. By monitoring whether the application can consistently generate frames at the expected rate, the system adjusts the refresh rate parameter upward or downward accordingly, thereby resolving the contradiction between maintaining high refresh rates and ensuring stable frame display.
2Use of energy by moving object
If the application draws image frames at a lower speed, then power consumption is reduced, but display abnormality occurs when drawing speed is less than refresh rate
Solution Approach 1:
The system dynamically synchronizes the refresh rate with the actual frame generation speed. When the application draws frames at a lower speed to save power, the refresh rate is automatically adjusted downward to match, preventing display abnormalities. This dynamic coupling ensures that the display system always operates within the capability limits of the frame generation process.
Solution Approach 2:
The system implements feedback by monitoring the frame generation speed and using this information to adjust the refresh rate. When frame drawing speed is detected to be lower than the current refresh rate, the system reduces the refresh rate accordingly, thereby maintaining display normality while allowing power-efficient frame generation speeds.
3Reliability
If frame skipping is implemented to handle unstable frame drawing, then display stability is improved, but latency differences among image frames increase
Solution Approach 1:
The system dynamically determines whether frame skipping is necessary based on the detected frame drawing stability. Frame skipping is only activated when instability is detected, and even then, it is applied selectively rather than uniformly. This dynamic approach maintains display stability while minimizing unnecessary frame skips that would increase latency.
Data Source
AI summary
A method and apparatus for performing display control of an electronic device are provided. The method may include: outputting an initial image, for displaying the initial image; checking whether a subsequent image is generated; in response to the subsequent image being not generated, checking whether a consecutively-skipped-image count is greater than or equal to a consecutively-skipped-image count threshold; and in response to the consecutively-skipped-image count being not greater than or equal to the consecutively-skipped-image count threshold, skipping a latest image, for preventing displaying the latest image, wherein the subsequent image is expected to be a next image of the latest image.