Dynamic Refresh Rate Control for Display Power Optimization

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Solution Overview

Problem

Conventional LED display technologies consume high power due to a uniform refresh rate across the entire screen, leading to inefficient power usage.

Innovation Solution

An information processing method and electronic device that dynamically adjust the refresh rate of specific areas on the display screen based on the input interface, allowing different areas to operate at varying refresh rates, reducing overall power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If a uniform refresh rate is applied across the entire display screen, then the display quality is maintained, but the power consumption increases

Engineering Contradiction:

Improvepower consumptionVSAvoiddisplay quality

Core Design Contradiction:

Use of energy by moving objectVSAdaptability or versatility

Solution Approach 1:

The display screen is divided into multiple independent refresh rate zones, each capable of operating at different refresh rates. This segmentation allows the system to apply high refresh rates only to specific regions requiring high quality display while using lower refresh rates in other regions, thereby reducing overall power consumption while maintaining display quality where needed.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the display screen are assigned different refresh rates based on their specific requirements. The input interface area maintains a higher refresh rate to ensure responsive display quality, while other areas use lower refresh rates to reduce power consumption. This local quality approach optimizes the balance between display performance and energy efficiency.

Inventive Principle:

Principle #3Local quality

2Reliability

If the refresh rate is switched across the entire surface, then the display updates are synchronized, but the refresh power consumption becomes high

Engineering Contradiction:

Improvedisplay synchronizationVSAvoidrefresh power consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The display is segmented into multiple refresh rate zones that can be independently controlled. Each zone maintains its own refresh rate, allowing asynchronous operation between zones. This reduces the overall power consumption while maintaining synchronization within each zone, as the system only needs to coordinate refresh operations for visible transitions rather than forcing uniform synchronization across the entire screen.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system implements periodic refresh operations at different frequencies for different zones. The input interface area uses a higher refresh rate for periodic updates to maintain responsiveness, while other areas use lower refresh rates. This periodic action with varying frequencies reduces average power consumption while maintaining display reliability through controlled synchronization at transition boundaries.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS11645997B2Information processing method and electronic device

Publication Date: 2023.05.09 LENOVO (BEIJING) LTD

AI summary

An information processing method. The information processing method includes obtaining an input operation, the input operation being used to activate an input interface; and activating the input interface and displaying the input interface in an output area of a display screen based on a refresh rate corresponding to the input interface in response to the input operation.