Color Management Module Decouples Temperature Adjustment

Solution Overview

Problem

Conventional display controllers perform color space transformation before color temperature adjustment, leading to potential color inaccuracies due to the undesired dependency between color space transformation and color temperature adjustment, limiting user customization and control over color management configurations.

Innovation Solution

The display device includes a color management module that supports multiple color space transformations and temperature adjustments, allowing for user customization by performing temperature adjustment before color space transformation or modifying the transformation matrix to decouple color temperature adjustments, ensuring color accuracy and independence of primary color ratios from selected temperature profiles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If color space transformation is performed before color temperature adjustment in conventional display controllers, then the processing sequence is simplified, but color accuracy deteriorates because color temperature adjustment alters the composition of primary color signals

Engineering Contradiction:

Improveprocessing sequence complexityVSAvoidcolor accuracy

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The patent performs color temperature adjustment before color space transformation, reversing the conventional sequence. This preliminary adjustment of color temperature ensures that the primary color signals are properly calibrated before being transformed into the target color space, thereby maintaining color accuracy while still using a systematic processing approach

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent modifies the color space transformation matrix to compensate for color temperature adjustments. By dynamically adjusting the transformation matrix parameters based on the selected color temperature profile, the system maintains accurate color reproduction across different temperature settings without requiring a completely separate processing path

Inventive Principle:

Principle #35Parameter changes

2Productivity

If color temperature adjustment is made after color space transformation, then the processing flow is maintained, but color accuracy is compromised because the adjustment alters primary color signal composition

Engineering Contradiction:

Improveprocessing efficiencyVSAvoidcolor accuracy

Core Design Contradiction:

ProductivityVSMeasurement precision

Solution Approach 1:

The patent performs color temperature adjustment before color space transformation, reversing the conventional sequence. This preliminary adjustment of color temperature ensures that the primary color signals are properly calibrated before being transformed into the target color space, thereby maintaining color accuracy while still using a systematic processing approach

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent modifies the color space transformation matrix to compensate for color temperature adjustments. By dynamically adjusting the transformation matrix parameters based on the selected color temperature profile, the system maintains accurate color reproduction across different temperature settings without requiring a completely separate processing path

Inventive Principle:

Principle #35Parameter changes

3Device complexity

If manufacturer pre-configuration of color management is used, then device complexity is reduced, but user control and customization capability are limited

Engineering Contradiction:

Improvecolor management configurationVSAvoiduser customization capability

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent implements a dynamic color management system that allows users to select from multiple color temperature profiles (e.g., 6504K, 930K, 12000K) and color spaces (sRGB, Adobe RGB, DCI-P3). The system dynamically adjusts the color temperature and transformation matrix based on user selection, providing flexibility and customization while maintaining a unified processing architecture

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent creates a universal color management module that handles multiple color spaces and temperature profiles through a single integrated system. This multi-functional approach allows the same hardware to serve various color management needs without requiring separate processing paths for each configuration

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS11438484B2Color temperature adjustment independent of scaler color space

Publication Date: 2022.09.06 DELL PROD LP

AI summary

A disclosed scaler resource includes a color management module configured to support two or more color space transformations and two or more color temperature adjustment profiles and to receive first pixel data and perform color processing of the first pixel data to produce second pixel data. The color processing includes a color space transformation in accordance with any of the supported color space transformation matrices and a color temperature adjustment in accordance with any of the supported color temperature adjustment profiles. The color processing is configured wherein a ratio of primary colors produced by performing the color processing on first pixel data corresponding to any primary color is independent of the selected color temperature adjustment profile. The color space transformation may be performed before or after the color temperature adjustment. When performed before, the color transformation matrix is modified to reflect the color temperature adjust profile.