Display Power Control via Image Recognition
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing power supply control methods for display devices fail to efficiently cut off power when a person has no demand for watching content, leading to energy waste and wear and tear, as they either require manual intervention or rely on simplistic occupancy detection.
Innovation Solution
A method that uses image acquisition and recognition units to determine if a person is present and their action state, then controls the power supply based on whether they are watching the display content, with features like facial and action state recognition and a judgment time to assess demand, ensuring power is cut off when there is no demand.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a sensor is provided to detect occupancy and cut off power supply when no person is present, then energy saving is improved, but the display device remains in ON state when a person is present but has no demand for watching content, causing energy waste
Solution Approach 1:
The system continuously monitors user behavior through image recognition and provides feedback to the power supply control. By analyzing whether users are actually watching content (eye direction, body orientation, duration of absence), the system dynamically adjusts power supply state, creating a closed-loop control that resolves the contradiction between simple occupancy detection and intelligent demand-based control.
Solution Approach 2:
The display device automatically determines user demand for content without requiring manual input or complex user interaction. The image recognition system autonomously analyzes user behavior patterns and makes power supply decisions, enabling the device to serve itself in determining when to maintain or cut power, thus improving energy efficiency without increasing operational complexity for users.
2Ease of operation
If the display device is kept in ON state to ensure availability, then ease of operation is improved, but energy consumption increases and wear and tear accelerates
Solution Approach 1:
The system performs preliminary analysis of user behavior patterns before making power supply decisions. By continuously monitoring and learning user habits (when they typically watch content, how long they take to respond), the system can predict when the device should remain on for quick access versus when it can be safely powered down, balancing availability with energy conservation through proactive rather than reactive control.
Solution Approach 2:
The power supply control transitions from a static binary state (on/off based on simple occupancy) to a dynamic multi-state system that considers multiple factors simultaneously: user presence, eye direction, body orientation, duration of inactivity, and learned user patterns. This dynamic adaptation allows the device to optimize the balance between availability and energy consumption in real-time based on actual usage conditions.
3Device complexity
If simple occupancy detection is used to control power supply, then device complexity is reduced, but measurement precision of user demand is insufficient, leading to inaccurate power control decisions
Solution Approach 1:
The detection system is segmented into multiple independent analysis modules: occupancy detection, face recognition, eye direction analysis, body orientation detection, and duration tracking. Each module focuses on a specific aspect of user behavior, allowing the system to achieve high measurement precision through specialized sub-functions rather than requiring a single complex all-encompassing detection mechanism.
Data Source
AI summary
The present invention belongs to the field of display technology, in particular to a power supply control method for display device and a display device. The power supply control method for a display device comprises: acquiring images of a room where the display device is located; judging whether there is any person in the room; when determining that there is a person in the room, further recognizing an action state of the person in the room and judging whether the person in the room has a demand of watching the display device; according to a result of judging that there is no person in the room or that the person in the room has no demand of watching, cutting power supply of the display device off.