Dynamic Screen Refresh Adjustment via Frame Similarity
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Solution Overview
Problem
Conventional display technologies face challenges in balancing high-quality picture rendering with low power consumption, particularly due to the complexity of manufacturing Gate Driver On Array (GOA) components, which complicates the process and reduces production yield.
Innovation Solution
A method and apparatus that adjust screen refresh frequency by calculating the similarity between current and previous frames of picture signals using a bitwise exclusive OR operation, allowing for dynamic adjustment of screen refresh frequency based on a preset relationship between similarity values and refresh frequencies, thereby optimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If interlaced scanning is implemented to reduce power consumption, then energy efficiency improves, but manufacturing complexity increases due to the need to manufacture AND gates on array during GOA production
Solution Approach 1:
The patent extracts the frame memory function from the traditional display system and integrates it into the GOA structure. By storing previous frame data directly in the GOA frame memory and using it for interlaced scanning control, the need for separate AND gate manufacturing is eliminated, thus reducing manufacturing complexity while maintaining power savings
Solution Approach 2:
The GOA frame memory is designed to serve multiple functions: storing current frame data, storing previous frame data, and providing control signals for interlaced scanning. This multi-functionality eliminates the need for separate components, simplifying the manufacturing process while achieving energy efficiency
2Use of energy by moving object
If screen refresh frequency is reduced to save power, then energy consumption decreases, but picture quality may deteriorate
Solution Approach 1:
The patent implements dynamic refresh rate adjustment based on frame similarity calculation. When frames are similar (low motion), the refresh rate is reduced to save power. When frames differ significantly (high motion), the refresh rate increases to maintain picture quality. This dynamic adaptation resolves the contradiction between power savings and picture quality
Solution Approach 2:
The system calculates similarity between current and previous frames, using this feedback to dynamically adjust the refresh rate. This closed-loop control ensures that power consumption is optimized while maintaining acceptable picture quality by adjusting refresh frequency based on actual content changes
Data Source
AI summary
The present disclosure provides a method and apparatus for adjusting a screen refresh frequency and a display. The method comprises: acquiring and storing a current frame of picture signal; calculating a similarity value between the current frame of picture signal and a previous frame of picture signal; and acquiring a screen refresh frequency for the current frame of picture signal based on the similarity value according to a preset relationship between similarity values and screen refresh frequencies, so as to realize adjustment of the screen refresh frequency.