Video Playback Inactivity Detection for Mobile Power Saving

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Solution Overview

Problem

Terminal devices, such as mobile phones, continue to consume power and heat up excessively when users do not actively turn off videos in loop or automatic playback, leading to battery degradation and safety risks, especially in poor heat dissipation conditions.

Innovation Solution

The method identifies different video playback scenarios and determines if the user is not watching the video by detecting inactivity or specific conditions, then reduces power consumption to prevent excessive battery heating and potential hazards.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If video playback continues in loop or automatic mode without user intervention, then video playback functionality is maintained, but power consumption increases and battery temperature rises excessively

Engineering Contradiction:

Improvevideo playback durationVSAvoidpower consumption

Core Design Contradiction:

Duration of action of moving objectVSUse of energy by moving object

Solution Approach 1:

The system performs preliminary detection of user inactivity (through sensor data, touch input monitoring, and usage pattern analysis) before automatically stopping video playback. This preliminary action prevents continued power consumption by identifying the condition (user not watching) before the harmful effect (excessive battery heating) occurs, allowing the system to proactively stop playback and conserve energy.

Inventive Principle:

Principle #10Preliminary action

2Productivity

If video playback continues without interruption, then user entertainment experience is maintained, but battery temperature rises leading to safety risks

Engineering Contradiction:

Improvevideo playback continuityVSAvoidbattery overheating

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The system continuously monitors multiple feedback signals including user interactions (touch inputs, gestures), sensor data (accelerometer, gyroscope, proximity sensor), and usage patterns to dynamically adjust video playback. This feedback mechanism allows the system to detect when the user has stopped watching and automatically stop playback, preventing battery overheating while maintaining playback continuity when the user is actively engaged.

Inventive Principle:

Principle #23Feedback

3Loss of energy

If the system continuously monitors user activity to detect inactivity, then power consumption can be reduced by stopping playback, but device complexity increases

Engineering Contradiction:

Improveenergy waste reductionVSAvoidmonitoring system complexity

Core Design Contradiction:

Loss of energyVSDevice complexity

Solution Approach 1:

The system leverages existing multi-functional sensors and components already present in the device (accelerometer, gyroscope, proximity sensor, touch input system) for user activity detection. By reusing these existing components for the additional function of video playback monitoring, the system avoids adding dedicated hardware complexity while achieving effective user inactivity detection and power consumption reduction.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12517566B2Method for reducing device power consumption, electronic device, and medium thereof

Publication Date: 2026.01.06 HONOR DEVICE CO LTD

AI summary

This application relates to terminal devices, specifically to a method for reducing device power consumption, an electronic device, and a medium thereof. The method identifies different video playback scenarios and determines if a user is still watching a video based on user inactivity in these scenarios. When it is determined that the user is not watching the video, the power consumption of the terminal device is reduced.