Refresh Rate Switching Synchronization in Electronic Displays
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Solution Overview
Problem
The inconsistency in adjustment times between hardware and software in electronic devices leads to issues like freezing when switching the refresh rate of a display screen.
Innovation Solution
A method where the electronic device sends a switching instruction to the display screen IC, and after determining that the refresh rate switching is complete, the system adjusts the transmission duration of image data to match the new refresh rate, avoiding issues like trampling TE and freezing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the refresh rate of the display screen is adjusted, then the smoothness of the displayed picture can be improved, but the adjustment time of hardware is inconsistent with the adjustment time of software, causing freezing problems
Solution Approach 1:
The patent applies preliminary action by having the display screen IC switch to the target refresh rate before the SOC completes its transmission duration adjustment. Specifically, when switching from a high refresh rate to a low refresh rate, the display screen IC switches first based on a switching instruction, and then the SOC adjusts the transmission duration after detecting the refresh rate switching completion. This preliminary switching avoids the inconsistency between hardware and software adjustment times, preventing display freezing while maintaining smoothness improvement.
2Loss of energy
If the refresh rate is switched from high to low, then power consumption can be reduced, but transmission duration adjustment may cause trampling TE and freezing issues
Solution Approach 1:
The patent implements feedback by having the SOC detect the refresh rate switching completion status before adjusting the transmission duration. The SOC monitors whether the display screen IC has successfully switched to the target refresh rate, and only after confirming the switching completion does it proceed to adjust the transmission duration from the first transmission duration to the second transmission duration. This feedback mechanism ensures that the transmission duration adjustment is synchronized with the actual hardware state, preventing trampling TE and display freezing while enabling power consumption reduction through lower refresh rates.
Data Source
AI summary
This application discloses a refresh rate switching method and an electronic device. The method includes: When it is determined that a refresh rate of the display screen is to be switched, a second refresh rate is determined; when the second refresh rate is lower than a first refresh rate, a SOC sends a first switching instruction to a display screen IC; the display screen IC switches the refresh rate of the display screen from the first refresh rate to the second refresh rate; when the SOC determines that the switching of the refresh rate of the display screen is completed, the SOC switches transmission duration of image data corresponding to a first application from first transmission duration to second transmission duration corresponding to the second refresh rate; and the SOC transmits the image data corresponding to the first application to the display screen IC based on the second transmission duration.