Dynamic Refresh Rate Processor for Display Power Optimization
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Solution Overview
Problem
Display devices in portable electronic systems face challenges in balancing high refresh rates for improved visual experience with the need to minimize power consumption, as high refresh rates lead to increased battery drain.
Innovation Solution
A processor with a refresh rate selection controller and display controller dynamically selects a suitable refresh rate for the display panel and adjusts the data transmission rate over the interface between the processor and the driving device, allowing for a range of refresh rates without user intervention, thereby optimizing power usage and visual experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the refresh rate of the display panel is increased to improve visual experience, then the smoothness of fast-moving contents is improved, but the power consumption increases significantly
Solution Approach 1:
The system dynamically adjusts the refresh rate based on the type of content being displayed. For static or slow-moving content, the refresh rate is reduced to save power, while for fast-moving content, the refresh rate is increased to improve visual experience. This dynamic adaptation resolves the contradiction by making the refresh rate flexible rather than fixed.
Solution Approach 2:
The patent changes the refresh rate parameter according to different usage scenarios and content types. By monitoring the content characteristics and adjusting the refresh rate parameter accordingly, the system achieves optimal balance between visual quality and power consumption, directly addressing the technical contradiction.
2Use of energy by moving object
If the refresh rate is dynamically adjusted to minimize power consumption, then battery life is extended, but the visual experience may deteriorate
Solution Approach 1:
The system implements feedback mechanisms to monitor both power consumption levels and content characteristics. Based on this feedback, the refresh rate is automatically adjusted to maintain acceptable visual experience while minimizing power consumption. The feedback loop ensures that visual quality does not deteriorate below acceptable thresholds even when reducing refresh rate for power savings.
Solution Approach 2:
The refresh rate is made dynamic and adaptive rather than static. The system continuously evaluates current usage conditions and adjusts the refresh rate in real-time, ensuring that power consumption is minimized only when it does not adversely affect visual experience quality.
3Productivity
If the data transmission rate is increased to support high refresh rate operations, then the throughput of the data interface is improved, but the power consumption of the processor and driving circuit increases
Solution Approach 1:
The data transmission rate is dynamically adjusted in synchronization with the refresh rate. When the refresh rate is reduced to save power, the data transmission rate is also reduced proportionally. This coordinated dynamic adjustment ensures that the data interface throughput is optimized for each operating condition without unnecessarily consuming power during high-rate transmission.
Data Source
AI summary
A processor for use in an electronic device is provided. The electronic device is capable of displaying and the processor has capability of switching a refresh rate for refreshing a display panel of the display device. The processor comprises: a refresh rate selection controller and a display controller. The refresh rate selection controller is configured to dynamically select one from a plurality refresh rates. The display controller is configured to control a driving device to refresh the display panel with the selected refresh rate and determine whether to adjust a data transmission rate over an interface between the processor and the driving device according to the selected refresh rate.