Brightness Adjuster for Flat-Panel Displays Reducing Power Without Color Loss
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Solution Overview
Problem
Conventional power saving methods for flat-panel displays, such as adding a white pixel and reducing red, green, and blue pixel brightness, either compromise color saturation or increase costs through complex frame memory usage.
Innovation Solution
A brightness adjuster comprising a determination unit, a calculation unit, and a digital-to-analog converting unit that adjusts red, green, and blue input signals based on a main input signal to generate optimized output signals, reducing power consumption without affecting display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a white pixel is added and brightness of red, green, and blue pixels is reduced for power saving, then power consumption is reduced, but color saturation is reduced
Solution Approach 1:
The patent applies dynamic adjustment by determining a main input signal from red, green, and blue input signals and dynamically adjusting the other signals based on this main signal. This dynamic approach allows the system to maintain color saturation while reducing power consumption, as the adjustment is performed in real-time based on the actual input signals rather than using a fixed white pixel approach
Solution Approach 2:
The patent changes the parameters of the red, green, and blue input signals by adjusting them according to the main input signal. Specifically, the patent adjusts the signal parameters (brightness levels) to optimize power consumption while preserving color saturation through mathematical relationships between the adjusted signals and the main signal
2Use of energy by moving object
If complex expressions and frame memory are used for power saving, then power consumption is reduced, but device complexity and cost increase
Solution Approach 1:
The patent extracts the essential function needed for power saving by determining a main input signal from the red, green, and blue input signals and using only this extracted main signal for adjustments. This eliminates the need for complex frame memory operations while achieving power saving through signal adjustment based on the extracted main signal
Solution Approach 2:
The patent creates a simplified copy of the display system's functionality by working with adjusted red, green, and blue input signals based on the main input signal rather than implementing complex frame memory operations. This copying approach achieves power saving with minimal additional hardware complexity
Data Source
AI summary
A brightness adjuster generating an image output to a panel, which displays the corresponding image according to the image output. The image output includes a red output signal, a green output signal, and a blue output signal. The brightness adjuster includes a determination unit, a calculation unit, and a digital to analog converting unit. The determination unit determines a main input signal according to a red input signal, a green input signal, and a blue input signal. The calculation unit adjusts the red, the green, and the blue input signals according to the main input signal. The digital to analog converting unit transforms the adjusted red, the adjusted green, and the adjusted blue input signals into the red, the green, and the blue output signals.