Multi-Display Luminance Control for Power Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing portable terminals with multiple display units face challenges in reducing power consumption while maintaining user operability, especially when the user is actively using the device.
Innovation Solution
A portable terminal with a luminance control unit that decreases the display luminance of one display unit when an input operation is performed on another, switching the non-active display unit to a power-saving state and stopping its update, thereby reducing power consumption without significantly impacting user operability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If display luminance of all display units is maintained at normal level, then user operability and visibility are improved, but power consumption increases
Solution Approach 1:
The patent applies different luminance levels to different display units based on their operational state. When a user operates one display unit, that unit maintains normal luminance while other display units are switched to lower luminance levels, creating localized quality differences that reduce overall power consumption while preserving usability of the active display
Solution Approach 2:
The system dynamically adjusts display luminance levels based on real-time user interaction states. The luminance control unit continuously monitors which display unit is being operated and dynamically switches luminance levels between display units, transforming a static power consumption approach into a dynamic adaptive system
2Use of energy by moving object
If display luminance of all display units is reduced to save power, then power consumption decreases, but visibility and user operability deteriorate
Solution Approach 1:
Instead of uniformly reducing luminance across all display units, the patent applies luminance reduction selectively only to non-operated display units while maintaining normal luminance on the active display unit, ensuring that visibility is preserved where needed while saving power elsewhere
3Use of energy by moving object
If technique of reducing backlight brightness after inactivity is applied to multiple display units, then power consumption reduces during idle state, but power consumption cannot be reduced while user is operating the terminal
Solution Approach 1:
The patent extends power consumption control from static idle-state management to dynamic real-time management during active use. By continuously monitoring user interaction and dynamically adjusting luminance across multiple display units, the system adapts power consumption control to various usage scenarios, not just idle states
Solution Approach 2:
The patent segments the power consumption control function across multiple display units independently. Each display unit can be controlled individually based on its operational state, allowing the system to reduce power consumption on non-active displays while maintaining full functionality on active displays, thereby enhancing overall power management versatility
Data Source
AI summary
A portable terminal, a display apparatus, a luminance control method and a control program are provided. The portable terminal includes a plurality of display units, and a luminance control unit which, in response to an input operation performed for a first display unit of the plurality of display units at a state where images are visibly displayed on the respective display units, performs a luminance control of decreasing a display luminance of a second display unit of the plurality of display units to be lower than a current luminance thereof, the second display unit being different from the first display unit.