Dynamic Display Driving Frequency Control for VR/AR Flicker Reduction
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Solution Overview
Problem
Increasing the driving frequency of displays in electronic devices to reduce VR/AR sickness leads to higher power consumption and heat generation, and can result in flicker and motion blur issues.
Innovation Solution
A method for dynamically controlling the display driving frequency, where the display driving circuit identifies the driving frequency and configures light-emitting and non-light-emitting periods to minimize flicker and motion blur, while maintaining seamless frequency changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the driving frequency of the display is increased to reduce VR/AR sickness, then the response speed of the display is improved, but power consumption and heat generation increase
Solution Approach 1:
The display driving frequency is dynamically adjusted based on the content type being displayed. For VR/AR content, the frequency is increased to reduce sickness, while for static or less demanding content, the frequency is reduced to save power. This dynamic adaptation resolves the contradiction by optimizing the frequency parameter according to actual usage scenarios rather than maintaining a constantly high frequency.
Solution Approach 2:
The patent changes the driving frequency parameter adaptively - increasing it when VR/AR content is detected to improve response speed and reduce motion sickness, and decreasing it during static content display to reduce power consumption. This parameter change strategy allows the system to achieve high performance when needed while conserving energy during normal operation.
2Speed
If the driving frequency of the display is increased to reduce VR/AR sickness, then the response speed of the display is improved, but heat generation increases
Solution Approach 1:
The display driving frequency is dynamically adjusted based on the content type being displayed. For VR/AR content, the frequency is increased to reduce sickness, while for static or less demanding content, the frequency is reduced to save power. This dynamic adaptation resolves the contradiction by optimizing the frequency parameter according to actual usage scenarios rather than maintaining a constantly high frequency.
3Use of energy by moving object
If the light-emitting duty is driven at certain timing to dynamically control display driving frequency, then power consumption is reduced, but flicker and motion blur occur
Solution Approach 1:
The patent implements periodic light-emitting duties with optimized timing and duration. By carefully controlling the light-emitting periods within each refresh cycle and ensuring proper synchronization between frames, the system achieves energy savings while maintaining visual quality. The periodic structure allows for reduced duty cycles (lower power consumption) while preventing flicker through proper timing alignment.
Solution Approach 2:
The system monitors display performance metrics and adjusts light-emitting duty timing accordingly. When flicker or motion blur is detected or anticipated, the timing and duration of light-emitting periods are adjusted to eliminate these artifacts while maintaining power efficiency. This feedback mechanism ensures visual quality is preserved during dynamic frequency adjustment.
Data Source
AI summary
An electronic device may include a display module for displaying image data, and a processor operatively connected to the display module to provide the image data to the display module, and the display module may include a display panel including a plurality of pixel lines including a plurality of pixels, and a display driving circuit for driving a plurality of pixels of the display panel. Various other embodiments are possible.