Ambient Light Sensor Control for Paper-Looking Displays
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Solution Overview
Problem
Conventional Paper-looking display technology requires a camera to remain constantly on, leading to high power consumption in electronic devices due to continuous ambient light monitoring.
Innovation Solution
Implement a method and system where the ambient light information acquisition unit is switched on only when the display unit's status changes, allowing for adaptive adjustment of display parameters based on acquired ambient light information, and is switched off after a predetermined threshold to conserve power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the camera is kept in an on-status to continuously acquire ambient light information, then the display parameter adjustment accuracy is improved, but the power consumption increases sharply
Solution Approach 1:
The patent implements periodic action by switching the camera on and off based on motion detection. The camera operates intermittently rather than continuously - it is activated when motion is detected and deactivated when no motion is present, thereby reducing power consumption while maintaining adequate ambient light information acquisition for display parameter adjustment
Solution Approach 2:
The system uses motion status information from the display unit itself to control the camera operation. The display unit's own motion state serves as the trigger for activating or deactivating the camera, eliminating the need for external control and enabling automatic power management based on actual usage needs
2Speed
If the ambient light information acquisition unit is switched on continuously, then the display parameter adjustment responsiveness is improved, but the overall device power consumption increases
Solution Approach 1:
The camera operates periodically based on motion detection events rather than continuously. When motion is detected, the camera activates to capture ambient light information for display parameter adjustment. When stationary, the camera remains off, reducing power consumption while maintaining responsiveness during actual usage scenarios
Solution Approach 2:
The system dynamically adjusts the camera operation state based on real-time motion status. The camera transitions between on and off states according to whether motion is detected, making the power consumption profile adaptive to actual usage conditions rather than static
Data Source
AI summary
A method and system for adjusting a display unit are disclosed. The method includes: acquiring first status information of the display unit; determining whether the first status information of the display unit is changed and obtaining a first determining result; switching on the ambient light information acquisition unit in a case that the first determining result indicates that the first status information of the display unit is changed; and adjusting a display parameter of the display unit according to ambient light information acquired by the ambient light information acquisition unit. According to the disclosed method and system, the power consumption of ambient light acquisition unit is reduced, and then the power consumption of the electronic device adopting Paper-looking technology is reduced.