Screen Projection Display Control Using AOD for Lower Power

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Solution Overview

Problem

When electronic devices project their screens using functions like YourPhone, they consume excessive power due to high refresh rates even when displaying static interfaces, which do not require such high refresh rates.

Innovation Solution

Adjust the screen's working mode to an Always On Display (AOD) mode when the ratio of the displayed area to the total screen area is below a threshold, reducing the refresh rate and powering only the necessary areas.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If the screen operates in normal mode with high refresh rate during screen projection, then the display quality is maintained, but the power consumption increases

Engineering Contradiction:

Improvepower consumptionVSAvoidrefresh rate

Core Design Contradiction:

Use of energy by moving objectVSSpeed

Solution Approach 1:

The patent dynamically adjusts the screen refresh rate based on the display content. When the content is static (such as during screen projection), the refresh rate is reduced from the normal high rate to a lower rate, while maintaining normal mode operation. This dynamic adaptation resolves the contradiction by matching the refresh rate to the actual display requirements rather than maintaining a constant high rate.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the refresh rate parameter from its default high value to a lower value when detecting static display content during screen projection. This parameter adjustment directly reduces power consumption while maintaining adequate display quality for static images, resolving the technical contradiction between energy efficiency and display performance.

Inventive Principle:

Principle #35Parameter changes

2Use of energy by moving object

If the screen operates in normal mode displaying static interface, then the display coverage is complete, but the power consumption is high

Engineering Contradiction:

Improvepower consumptionVSAvoiddisplay area

Core Design Contradiction:

Use of energy by moving objectVSArea of stationary object

Solution Approach 1:

The patent applies partial action by reducing the refresh rate to the minimum necessary level for displaying static content. Instead of refreshing the entire screen at high frequency, the system uses a lower refresh rate that is sufficient for static images, thereby reducing power consumption while maintaining complete display coverage when needed.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS12608072B2Power consumption control method and electronic device

Publication Date: 2026.04.21 HONOR DEVICE CO LTD

AI summary

Embodiments of this application disclose a power consumption control method and an electronic device, and relate to the field of electronic technologies, to reduce power consumption of an electronic device such as a mobile phone when a user performs screen projection by using the electronic device. A specific solution is as follows: An electronic device projects a screen by using a screen projection application; the electronic device displays a first interface, where the first interface includes a to-be-displayed area, and a working mode of the screen of the electronic device is a normal mode; and the electronic device adjusts the working mode of the screen to an always on display AOD mode when a ratio of the to-be-displayed area to all display areas of the screen is less than a preset threshold.