Dynamic Display Area Control for Backlight Power Reduction
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Solution Overview
Problem
Current display technologies in hand-held terminal equipment, particularly LCDs, face high power consumption due to uniformly activated backlights, which waste energy as they illuminate the entire screen even when only a portion is needed for displaying information.
Innovation Solution
A displaying device and method that dynamically adjusts the display area based on content, calculating the active display area and controlling backlights only for the necessary regions, reducing power consumption by turning off unnecessary backlights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If all backlights are turned on to display the full screen, then the display area is sufficient for any content, but the power consumption increases significantly
Solution Approach 1:
The backlight system is divided into multiple independently controllable backlight units corresponding to different display regions. Each backlight unit can be turned on or off separately based on whether its corresponding region needs to display content, allowing the display area to be dynamically adjusted without activating all backlights simultaneously.
Solution Approach 2:
The display area is made dynamic by detecting the actual content display requirements and adjusting which backlight units are active. The system transitions from a static full-screen backlight configuration to a dynamic configuration where only necessary regions are illuminated, optimizing the balance between display area and power consumption.
2Use of energy by moving object
If the display area is reduced to save power, then the power consumption decreases, but the display capability is limited
Solution Approach 1:
The system employs feedback mechanisms where the control unit detects what content needs to be displayed and automatically adjusts the backlight configuration accordingly. This feedback loop ensures that the display capability is maintained by activating only the necessary backlight regions, preventing both power waste and display limitation.
Solution Approach 2:
The system changes the operational parameters of the backlight units based on display requirements. By adjusting which backlight units are active (a parameter change), the system adapts the display capability to match the actual content needs while optimizing power consumption, rather than using a fixed display area configuration.
Data Source
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AI summary
A displaying device, a terminal of the displaying device, and a display method are provided. The displaying device includes: a calculating unit, configured to calculate the active display area that shows the interface content and calculate an image area occupied by a display interface; a creating unit, configured to create image data in the image area and write the image data in the displaying unit; and a displaying unit, configured to display the corresponding information based on the image data. The displaying device may adjust the display area of the screen dynamically according to the display content to reduce the cost of the displaying unit.