Display Driver Color Adjustment Circuit for Accurate RGB Scaling
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Solution Overview
Problem
Existing display systems fail to effectively adjust colors for digital images, leading to unsatisfactory viewer experiences due to specific flaws in color representation across different display technologies like CSTN, TFT, OLED, and DSTN.
Innovation Solution
A system and method that linearly scales display data by using a display driver circuit with a processor interface logic, display adjust circuit, color adjust registers, and a screen driver to adjust colors based on the properties of the display screen, allowing for fast and cost-effective color adjustment by defining adjustment data for primary colors and implementing algorithms in hardware description language.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If color adjustment is performed using conventional methods (lookup tables, matrix algorithms), then color accuracy is improved, but processing speed and cost increase
Solution Approach 1:
The patent extracts the color adjustment function from complex software-based processing (lookup tables, matrix algorithms) and implements it in hardware within the display driver circuit. This hardware extraction enables real-time color scaling without the computational overhead of conventional methods, simultaneously achieving color accuracy and high processing speed.
Solution Approach 2:
The patent replaces software-based color processing mechanisms with hardware-based circuitry. The display driver circuit includes dedicated color adjustment circuits that perform linear scaling of color values through hardware operations, substituting the mechanical/software processing with electrical circuit operations for faster execution.
2Measurement precision
If complex color adjustment algorithms are implemented, then color representation quality is improved, but device complexity and cost increase
Solution Approach 1:
The patent applies local quality by implementing color adjustment specifically at the display driver circuit level where it is most needed, rather than throughout the entire system. The linear scaling is applied locally to the color values being sent to the display, providing quality improvement without system-wide complexity.
Solution Approach 2:
The patent changes the approach from complex non-linear color space transformations to simple linear scaling of color parameters. By adjusting color values through linear multiplication factors stored in registers, the system achieves color representation quality with minimal device complexity.
3Adaptability or versatility
If software-based color adjustment is used, then flexibility is maintained, but processing time increases
Solution Approach 1:
The patent performs preliminary action by pre-calculating and storing linear scaling factors in registers within the display driver circuit. These pre-computed factors are immediately applied to color values in real-time, eliminating the need for complex runtime calculations and reducing processing time while maintaining flexibility through programmable registers.
Solution Approach 2:
The patent substitutes software-based color adjustment with hardware-based linear scaling circuits in the display driver. This mechanical/electrical substitution executes color adjustments in real-time through dedicated circuitry, dramatically reducing processing time compared to software execution.
Data Source
AI summary
Systems and methods to linearly scale the colors of display data in a display driver circuit before it is written in a display RAM have been achieved. Said systems and methods invented are applicable to any display type such as e.g. CSTN, DSTN, TFT, OLED, etc. Each primary color value, e.g. red, green and blue is individually adjusted with its own setting, which allows maximum flexibility in display adjustment. Set adjustment is performed to adjust the colors displayed to the specific color characteristics of any display screen type. A system processor sets the red, green and blue color adjust register settings for a particular display type. The display data is downloaded from a system processor into a display RAM via a display adjust circuit, Said display adjust circuit modifies the display data according to the color adjust register setting settings before it is written into the RAM.