Mobile Terminal Graphic Memory Segmentation for Always-On Display Power
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Mobile terminals experience increased electric current consumption and decreased luminance when using the always-on-display (AOD) function, as existing technologies do not effectively manage power usage while maintaining image output without changing the image position.
Innovation Solution
A mobile terminal with multiple graphic memory areas, where image data is stored and selectively driven based on image size, allowing power to be applied only to the necessary areas, and the display is configured to maintain image output with adjustable brightness and masking processing to minimize residual images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the always-on-display function continuously outputs designated information, then information display is maintained, but electric current consumption increases
Solution Approach 1:
The graphic memory is divided into multiple independent graphic memory areas (first area, second area, third area), each capable of storing different image data. The controller selectively activates only the required areas based on display needs, rather than continuously powering all areas. This segmentation allows the display to maintain information output while reducing overall power consumption by keeping unnecessary areas in an inactive state.
2Duration of action of moving object
If the always-on-display function continuously outputs designated information, then information display is maintained, but luminance decreases
Solution Approach 1:
By segmenting the graphic memory into separate areas and selectively activating only those needed for current display content, the system reduces cumulative wear and heat generation in the display components. This maintains luminance levels by preventing continuous stress on the entire display system, while still providing continuous information output in the active areas.
Solution Approach 2:
The controller periodically updates and refreshes image data in the active graphic memory areas while keeping other areas inactive. This periodic refresh mechanism maintains display luminance by allowing inactive areas to rest and recover, while ensuring continuous visual output in the active display regions through timed updates.
3Use of energy by moving object
If multiple graphic memory areas are selectively driven based on image size, then power consumption is reduced, but device complexity increases
Solution Approach 1:
The graphic memory is segmented into distinct areas with dedicated storage purposes. The controller manages these areas through systematic allocation rules, selecting which areas to activate based on image size requirements. This structured segmentation provides clear management protocols that reduce the complexity burden compared to unstructured memory management.
Solution Approach 2:
The system dynamically adjusts the number and configuration of active graphic memory areas based on real-time display requirements such as image size. The controller flexibly activates only the necessary areas (e.g., one area for small images, multiple areas for larger images), adapting the memory configuration to match current needs rather than maintaining a fixed complex structure.
Data Source
AI summary
Provided is a mobile terminal including a graphic memory that includes multiple graphic memory areas in which different pieces of image data are stored, and that provides pieces of first image data that are stored in one or several graphic memory areas that are selected according to a control command; a display unit that is switchable between an activated state and an inactivated state, and to which an image that corresponds to the first image data is output, in the inactivated state; a controller that generates the control command, based on the size of the image, and that controls the display unit in such a manner that the image which corresponds to the first image data is output; and a power source unit that applies a power to a graphic memory area that is selected from among the multiple graphic memory areas, according to the control channel.