Display Refresh Rate Adjustment via User Activity Monitoring
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Solution Overview
Problem
Display devices often consume excessive power when operating at high refresh rates, leading to reduced battery life and increased heat and power costs, despite providing a better viewing experience.
Innovation Solution
The refresh rate of a display device is dynamically adjusted based on conditions such as user input time, frame size, and update frequency, reducing the rate when these conditions are met and increasing it when they are not, using integrated voltage regulators and power management units to control power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display device operates at a high refresh rate, then the viewing experience is improved, but the power consumption increases
Solution Approach 1:
The refresh rate is dynamically adjusted based on user activity detection. The system transitions from a static high refresh rate to a variable refresh rate that adapts to current usage conditions, lowering the rate during idle periods while maintaining high rates during active user interaction, thus resolving the contradiction between consistent viewing quality and variable power consumption needs
Solution Approach 2:
The patent changes the operational parameter (refresh rate) from a fixed value to a variable value based on detected conditions. By monitoring user input timing and modifying the refresh rate parameter accordingly, the system achieves lower power consumption during idle states while preserving high-quality viewing experience during active use, directly addressing the energy-quality tradeoff
2Duration of action of moving object
If the refresh rate is reduced to save power, then the battery life is extended, but the viewing experience may be degraded
Solution Approach 1:
The system implements periodic monitoring of user input activity and adjusts the refresh rate in corresponding periods. During detected idle periods, the refresh rate is reduced to extend battery life, while during active periods when user input is detected, the refresh rate is increased to maintain viewing experience, thus resolving the contradiction through time-based adaptation
Solution Approach 2:
The patent employs feedback mechanisms by detecting user input events and using this information to control the refresh rate. The system continuously monitors user interaction patterns and adjusts display performance accordingly, ensuring that battery life is extended during idle feedback loops while viewing experience is maintained during active feedback periods when user input is detected
Data Source
AI summary
In an embodiment, a computing device includes a processor and a machine-readable storage medium storing instructions. The instructions may be executable by the hardware processor to: monitor a user input device during presentation of video frames on a display device with a refresh rate at a first level; determine whether a time period since a last user interaction with the user input device exceeds a time threshold; and reduce the refresh rate of the display device to a second level in response to a determination that the time period since the last user interaction exceeds the time threshold. Other embodiments are described and claimed.