Display Brightness Control for Projection Power Reduction
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Solution Overview
Problem
Electronic devices experience increased power consumption when using a projection module, which hampers their development and usage due to unchanged display parameters before and after projection.
Innovation Solution
A control method and device that detect the projection module's state and adjust the display module's brightness from a first brightness to a second, lower brightness when projection is performed, reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display module maintains high display brightness during projection, then the display content remains clearly visible, but the overall power consumption increases
Solution Approach 1:
The display brightness is dynamically adjusted based on the projection state. When projection is detected, the brightness transitions from a first brightness to a second brightness (lower than the first). This dynamic adjustment allows the system to adapt brightness levels to actual usage scenarios, reducing power consumption during projection while maintaining visibility requirements
Solution Approach 2:
The patent changes the display brightness parameter from a fixed high value to a variable value that depends on the projection state. By switching between different brightness levels (first brightness when projecting, second brightness when not projecting), the system optimizes the balance between visibility and power consumption
2Use of energy by moving object
If the display module reduces display brightness during projection, then the power consumption decreases, but the visibility of display content may be affected
Solution Approach 1:
The brightness adjustment is not static but dynamic, switching between two distinct brightness levels based on real-time detection of projection state. This ensures that brightness is only reduced when projection is actively occurring, maintaining visibility when needed while saving power when projection is the primary display mode
Data Source
AI summary
A control method and a device thereof are provided, which are applied to an electronic device. The electronic device includes a display module and a projection module, and is capable of displaying output content through the display module or projecting the output content to a projection screen. The method includes: detecting a state of the projection module; acquiring a current display brightness of the display module as a first display brightness, in the case that it is detected that the projection module is controlled to perform projection; and controlling a display brightness of the display module to switch from the first display brightness to a second display brightness which is lower than the first display brightness.