By-region Display Image Quality Control for Power Efficiency

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Solution Overview

Problem

Existing techniques either increase power consumption or uniformly lower visibility, failing to simultaneously enhance visibility and reduce power consumption effectively.

Innovation Solution

A mechanism that specifies an arbitrary region on a display screen for enhanced visibility by reducing power consumption and image quality in non-emphasized areas, such as lowering luminance or displaying only color information, while maintaining high image quality in the emphasized region.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If the technique in Patent Document 1 is applied to display an image of a selected display region in an emphasized state, then visibility of the emphasized region is improved, but power consumption is increased

Engineering Contradiction:

Improvevisibility of emphasized regionVSAvoidpower consumption

Core Design Contradiction:

Illumination intensityVSUse of energy by stationary object

Solution Approach 1:

The display screen is divided into multiple display regions, with at least one region displaying content at a first luminance level and another region displaying content at a second luminance level. This segmentation allows different parts of the display to operate at different power consumption levels, resolving the contradiction between overall visibility and power consumption.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different display regions are assigned different luminance characteristics and power consumption profiles. The emphasized region maintains high luminance for visibility while other regions can operate at lower luminance levels, creating local quality differences that balance visibility needs with power consumption constraints.

Inventive Principle:

Principle #3Local quality

2Use of energy by stationary object

If the technique in Patent Document 2 is applied to reduce power consumption by changing operation modes, then power consumption is reduced, but visibility is uniformly lowered

Engineering Contradiction:

Improvepower consumptionVSAvoidvisibility

Core Design Contradiction:

Use of energy by stationary objectVSIllumination intensity

Solution Approach 1:

The display is segmented into multiple regions with different luminance levels. At least one region maintains higher luminance for visibility while other regions reduce luminance to save power. This prevents uniform visibility reduction while achieving power consumption reduction.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of uniformly reducing luminance across the entire display, the invention applies luminance reduction partially to specific regions. This partial action maintains visibility in critical areas while achieving overall power consumption reduction.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS8373728B2By-region display image quality controlling device, self-luminous display device, and computer program

Publication Date: 2013.02.12 MAGNOLIA BLUE CORP

AI summary

When an arbitrary position and an arbitrary size on a display screen are specified as an emphasized display region so as to be interlocked with a display content of an application program, only for another region part excluding the emphasized display region, power consumed by the region part is aggressively reduced and simultaneously image quality is aggressively lowered as compared with the emphasized display region. Thereby, visibility and reduction in power consumption can be surely made compatible with each other.