Foldable Dual-Screen Wake Control with Low-Power Sensor Triggers

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Solution Overview

Problem

Existing multi-screen devices struggle to accurately and timely control which screen to turn on or off based on changing application scenarios, leading to inefficiencies and reduced user experience.

Innovation Solution

Implementing a high-power sensor and a low-power sensor in electronic devices to detect posture and screen-on triggers, respectively, allowing the device to quickly determine and control which screen to turn on based on user interactions and device posture, with the high-power sensor being enabled only after a screen-on trigger is received.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the high-power sensor is continuously enabled to detect device posture, then the screen can be accurately controlled based on application scenarios, but the power consumption increases

Engineering Contradiction:
Improvescreen control accuracyVSAvoidpower consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The low-power sensor performs preliminary detection of screen-on trigger signals before the high-power sensor is activated. This preliminary action allows the system to prepare for accurate screen control while minimizing power consumption during idle periods.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system dynamically switches between sensor states based on operational needs. The high-power sensor is enabled only when triggered by the low-power sensor, creating a dynamic power management strategy that adapts to real-time usage patterns.

Inventive Principle:
Principle #15Dynamics

2Use of energy by moving object

If the high-power sensor is disabled to reduce power consumption, then the screen response time increases

Engineering Contradiction:
Improvepower consumptionVSAvoidscreen response time
Core Design Contradiction:
Use of energy by moving objectVSLoss of time

Solution Approach 1:

The low-power sensor continuously monitors for screen-on trigger signals in advance, so when a trigger is detected, the system can immediately activate the high-power sensor and subsequent screen control processes, minimizing response time while maintaining low power consumption during idle states.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

Upon detecting a trigger signal, the system rapidly transitions from the low-power state to the high-power state, rushing through the activation process to minimize the time delay before the screen responds, thereby reducing perceived response time.

Inventive Principle:
Principle #21Skipping (Rushing through)

Data Source

PatentEP4072111B1Screen-on control method, electronic device, computer-readable storage medium and computer program product
Publication Date: 2025.09.24 HUAWEI TECH CO LTD
  • EP4072111B1 patent drawingFigure 1A~1B
  • EP4072111B1 patent drawingFigure 1C~1D
  • EP4072111B1 patent drawingFigure 1F

AI summary

This solution relates to the field of terminal artificial intelligence (artificial intelligence, AI) technologies, and discloses a screen-on control method and an electronic device. The electronic device related to this application includes a first screen and a second screen. A high-power sensor of the electronic device is in a disabled state, and a low-power sensor of the electronic device is in an enabled state. The electronic device includes a foldable device. Based on this, after the electronic device receives a screen-on trigger signal from the low-power sensor or a processor of the electronic device, the electronic device may determine a to-be-lit-up first target screen based on the screen-on trigger signal, and then control the first target screen to be lit up. It can be learned that, in the technical solution disclosed in this application, when the high-power sensor is in a disabled state, a screen can be controlled to be lit up in response to the screen-on trigger signal, so that user experience can be improved.