Variable Frame Duration Control for Display Power Optimization
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Solution Overview
Problem
Electronic displays face increased power consumption and reduced battery life due to high refresh rates, leading to inefficient image rendering for moving images and excessive power usage for stagnant or slowly moving images, which affects image quality and power efficiency.
Innovation Solution
Implementing variable frame duration techniques that dynamically adjust the refresh rate based on measured image velocity, comparing it to velocity thresholds to optimize image quality and minimize power consumption by adjusting the refresh rate accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the refresh rate is increased to improve image quality for moving images, then image sharpness and quality are improved, but power consumption increases
Solution Approach 1:
The patent applies dynamics by making the refresh rate adjustable rather than fixed. The system dynamically changes the refresh rate based on image motion characteristics - using higher refresh rates for moving images to maintain quality and lower refresh rates for static images to reduce power consumption. This dynamic adaptation resolves the contradiction between image quality and power consumption.
Solution Approach 2:
The patent changes the refresh rate parameter based on detected image motion. By monitoring image velocity and comparing it to thresholds, the system adjusts the refresh rate parameter accordingly - increasing it when motion is detected to maintain image quality, and decreasing it when motion is minimal to reduce power consumption. This parameter adaptation directly addresses the technical contradiction.
2Manufacturing precision
If the refresh rate is increased to reduce motion blur, then image quality is improved, but power consumption increases
Solution Approach 1:
The system dynamically adjusts the refresh rate based on real-time image motion detection. When motion blur is detected, the refresh rate is increased to reduce blur and improve image quality. When motion is minimal, the refresh rate is decreased to minimize energy loss. This dynamic behavior resolves the contradiction between reducing motion blur and conserving energy.
Solution Approach 2:
The patent implements feedback by continuously monitoring image motion characteristics and using this information to adjust the refresh rate. The motion detection mechanism provides feedback about current image conditions, which then triggers appropriate refresh rate changes. This closed-loop feedback system ensures optimal balance between image quality and power consumption.
3Productivity
If a fixed high refresh rate is used to ensure optimal image quality, then image rendering is smooth, but power consumption increases and battery life decreases
Solution Approach 1:
The patent transitions from a fixed refresh rate to a dynamic one that adapts to image content. By detecting motion characteristics and adjusting the refresh rate accordingly, the system maintains smooth image rendering for moving content while reducing power consumption for static content. This dynamic approach resolves the contradiction between rendering performance and power consumption.
Solution Approach 2:
The system changes the refresh rate parameter based on detected image motion characteristics. When motion is detected, the refresh rate increases to maintain rendering smoothness. When motion is minimal, the refresh rate decreases to reduce power consumption. This parameter adaptation allows the system to optimize both performance and energy efficiency.
Data Source
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AI summary
Devices and methods for improving image quality and decreasing power consumption of an electronic display are provided. The electronic device includes a display panel including a plurality of pixels configured to display an image, and to operate at multiple refresh rates. The electronic device also includes a processor configured to instruct the display panel to transition between the multiple refresh rates based at least in part on a blur effective width of the image.