Display Device Segmentation for Current Reduction

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Solution Overview

Problem

Existing electronic devices fail to effectively reduce current consumption while maintaining visibility in varying ambient illumination conditions, as existing schemes focus solely on improving user visibility without considering power consumption.

Innovation Solution

An electronic device and method that divide images into perceivable and imperceivable regions based on illuminance and screen brightness, applying image transformation to blackout imperceivable regions, thereby minimizing current consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If screen brightness is increased to improve visibility in ambient light, then visibility is improved, but current consumption increases

Engineering Contradiction:

ImprovevisibilityVSAvoidcurrent consumption

Core Design Contradiction:

Illumination intensityVSUse of energy by moving object

Solution Approach 1:

The patent segments the display screen into multiple regions based on their perceivability to users under different ambient illumination conditions. The controller identifies imperceivable regions where content cannot be seen and separately manages brightness for perceivable regions, allowing selective dimming or blackout of imperceivable regions to reduce overall power consumption while maintaining visibility where needed.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies different brightness levels to different regions of the screen based on local perceivability characteristics. Instead of uniformly adjusting the entire screen's brightness, the controller applies local quality changes by blacking out or dimming specific imperceivable regions while maintaining normal brightness in perceivable regions, optimizing the trade-off between visibility and power consumption locally.

Inventive Principle:

Principle #3Local quality

2Illumination intensity

If ambient illumination increases, then visibility decreases due to reduced contrast ratio, but increasing screen brightness to compensate increases power consumption

Engineering Contradiction:

Improvecontrast ratioVSAvoidpower consumption

Core Design Contradiction:

Illumination intensityVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic adaptation by continuously monitoring ambient illumination levels and adjusting the display strategy in real-time. The controller dynamically identifies imperceivable regions based on current lighting conditions and adjusts their brightness accordingly, transitioning between different display states (normal, dimmed, blacked out) as environmental conditions change, thereby maintaining optimal contrast ratio perception while adapting power consumption to actual needs.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS10032404B2Electronic device and operating method for displaying an image including an imperceivable region

Publication Date: 2018.07.24 SAMSUNG ELECTRONICS CO LTD

AI summary

An electronic device having a display function and operating method therefor are provided, which display a transformed image based on image processing information, in order to reduce current normally consumed in displaying regions of an original image that are not perceivable to a user. The method includes obtaining an image to be displayed; determining image processing information of the electronic device; transforming the image based on the image processing information; and displaying the transformed image.