Dynamic Refresh Rate Control for Display Heat Management
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Solution Overview
Problem
Electronic devices that support high refresh rates for displays face challenges in managing heat generation and ensuring seamless screen transitions when changing refresh rates.
Innovation Solution
An electronic device and method that dynamically determine a refresh rate based on application-specific settings and device state information, allowing for efficient heat management and seamless screen transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the electronic device operates the display at a high refresh rate, then the screen output becomes smooth and seamless transitions are achieved, but heat generation increases and power consumption rises
Solution Approach 1:
The patent implements dynamic refresh rate adjustment by monitoring device state information (temperature, battery charge level, CPU load) and automatically changing the refresh rate between high and low modes. The processor determines appropriate refresh rates based on real-time device conditions, allowing the display to operate at high refresh rates when conditions permit and switch to low refresh rates when heat or power constraints are detected, thus resolving the contradiction between smooth screen output and heat generation
Solution Approach 2:
The patent changes the refresh rate parameter dynamically based on device state information. The processor receives frequency events from applications, identifies predetermined settings, and determines appropriate refresh rates (e.g., 120Hz vs. 60Hz) based on temperature, battery charge level, and CPU load conditions. This parameter adjustment allows the system to maintain high refresh rates for smooth display when power and thermal conditions are favorable, while reducing refresh rates to manage heat and power consumption when necessary
2Loss of energy
If the electronic device changes refresh rate from high to low or from low to high, then power consumption and heat generation are managed, but screen transition becomes unnatural
Solution Approach 1:
The patent applies preliminary action by preparing the display for refresh rate transitions in advance. When a transition is detected (e.g., from high to low refresh rate), the system performs preliminary frame buffering and synchronization to ensure that the transition occurs at an appropriate moment in the display cycle. This preliminary preparation prevents abrupt visual changes and maintains natural screen transitions while still achieving power saving benefits from the refresh rate change
Solution Approach 2:
The patent implements feedback mechanisms where the processor continuously monitors device state information (temperature, battery charge level, CPU load) and adjusts the refresh rate accordingly. The system receives frequency events from applications and automatically modifies refresh rates based on real-time conditions. This feedback loop ensures that refresh rate changes are made intelligently based on actual device needs, balancing power consumption with display quality and maintaining natural transitions through continuous monitoring and adaptive adjustment
Data Source
AI summary
An electronic device may include: a display configured to display an execution screen of an application, and a processor operatively connected to the display. The processor is configured to: execute the application; receive a frequency event from the application; identify predetermined settings based on the application being executed; determine, based on the frequency event and the predetermined settings, a refresh rate of an execution screen of the application; identify, based on state information of the electronic device and the determined refresh rate, information for controlling operation of a high speed screen; and controlling, based on the identified information, the high speed screen related to the execution screen of the application on the display.