Display Driving Circuit With Gradual Frame Rate Reduction
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Solution Overview
Problem
Display panels in handheld electronic devices consume excessive power due to continuous image updates, which reduces device usage time.
Innovation Solution
The frame rate of images is gradually adjusted by a driving circuit, which requests image data from a processor circuit through a request signal, allowing for a controlled transition from an initial to a target frame rate, thereby optimizing display quality and power savings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display panel continuously updates the image, then the display quality is maintained, but the power consumption increases
Solution Approach 1:
The patent implements variable refresh rate technology where the display panel updates images at different frame rates based on content requirements. When frame rate adjustment is applied, the display panel performs periodic updates at optimized intervals rather than continuous updates, reducing power consumption while maintaining acceptable display quality for static or slowly changing content.
2Use of energy by moving object
If the frame rate is directly adjusted from initial frame rate to target frame rate, then the power saving is maximized, but the display quality deteriorates
Solution Approach 1:
The patent segments the frame rate adjustment process into multiple intermediate steps. Instead of directly transitioning from initial frame rate to target frame rate, the driving circuit adjusts the frame rate through several intermediate values, gradually reducing the frame rate. This segmented approach allows the display panel and processor to adapt to changing frame rates smoothly, preventing display quality deterioration while still achieving significant power savings.
Solution Approach 2:
The patent implements dynamic frame rate adjustment where the frame rate is continuously adapted based on real-time display content analysis and system state. The driving circuit dynamically modifies the frame rate parameter, transitioning from static frame rate to dynamic variable frame rate, which optimizes power consumption while maintaining display quality through adaptive control.
3Reliability
If the frame rate is gradually adjusted, then the display quality is maintained, but the time required for adjustment increases
Solution Approach 1:
The patent applies partial action by adjusting the frame rate only when necessary based on content analysis. The system evaluates display content and system state to determine when frame rate adjustment is needed, rather than continuously adjusting. This selective approach reduces the overall adjustment time while maintaining display quality, as adjustments are performed only when the benefit outweighs the time cost.
Data Source
AI summary
Disclosed is an electronic device, including a display panel, a driving circuit, and a processor circuit. The display panel is configured to display an image. The driving circuit is configured to drive the display panel to display the image based on an image data. The processor circuit is configured to output the image data to the driving circuit. The driving circuit outputs a request signal to the processor circuit to request the processor circuit to output the image data. The driving circuit adjusts a frame rate of the image based on the image data.