Biometric Display Control for Half-Screen-Off Power Saving
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Solution Overview
Problem
In scenarios where user interaction is limited, maintaining a screen-on state on mobile devices without manual operation affects user experience, leading to inefficient power consumption.
Innovation Solution
An electronic device equipped with a fingerprint sensor and optical proximity sensor detects biometric features to automatically control the display screen's on/off states based on user presence, reducing power consumption by implementing half-screen-off states when no interaction is detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If continuous biometric detection is performed to maintain screen-on state, then user experience is improved, but system power consumption increases excessively
Solution Approach 1:
The system performs biometric detection periodically at specific time points (first moment and second moment) rather than continuously. The detection is triggered based on screen state transitions and time intervals, creating a periodic detection pattern that reduces power consumption while maintaining user experience.
Solution Approach 2:
The detection frequency and screen state are dynamically adjusted based on user presence detection. The system transitions between screen-on, half-screen-off, and screen-off states depending on whether biometric features are detected, making the system adaptive to actual usage conditions.
2Measurement precision
If biometric detection is performed at every moment, then detection accuracy is improved, but power consumption increases
Solution Approach 1:
Biometric detection is performed at specific periodic moments (first moment when screen transitions to half-screen-off state, and second moment when screen transitions from half-screen-off to screen-on state) rather than continuously. This periodic detection approach maintains detection accuracy for critical state transitions while significantly reducing overall power consumption.
Solution Approach 2:
The system performs preliminary detection at the first moment before finalizing the half-screen-off state transition. This preliminary action ensures accurate detection before committing to a state change, maintaining measurement precision while avoiding unnecessary continuous detection.
3Ease of operation
If the screen remains on continuously without manual operation, then user convenience is improved, but battery power consumption increases
Solution Approach 1:
The system automatically determines whether to maintain screen-on state by detecting biometric features (eye presence, facial recognition) without requiring manual user input. The device serves itself by using sensors to detect user presence and automatically adjusting screen state, eliminating the need for users to manually keep the screen on while preserving battery life.
Solution Approach 2:
The manual mechanical interaction (user touching or pressing the device to keep screen on) is replaced with optical and biometric sensing systems. The camera and proximity sensor detect user presence and trigger appropriate screen states automatically, substituting physical user actions with automated sensing and control.
4Loss of energy
If the system transitions to half-screen-off state quickly, then power saving is improved, but user experience deteriorates
Solution Approach 1:
The system uses timed periodic checks to determine when to transition to half-screen-off state. Instead of immediate transition upon detecting no interaction, the system waits for specific time intervals and performs detection at predetermined moments, balancing power saving with user experience by avoiding premature state transitions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances user experience by maintaining a screen-on state without manual operation, while efficiently managing power consumption through intelligent detection and reducing battery drain.
Implementation Method 1
an optical proximity sensor of the electronic device meets a preset condition
Implementation Method 2
detecting, by the electronic device, biometric feature information
Data Source
AI summary
This application provides a display screen control method and an electronic device. The method includes: An electronic device starts to perform detection based on a status of a display screen and a status of an optical proximity sensor and with reference to whether a user operation is received. In a detection process, if the electronic device detects target biometric feature information, the electronic device may control the display screen to change from a half-screen-off state to a screen-on state. Therefore, a display screen control method is provided, so that a user can turn on the display screen of the electronic device without needing to operate the electronic device. In addition, when a condition is met, the electronic device starts detection, so as to ensure real-time and efficient detection, and effectively reduce power consumption.