Color Adaptive Emissive Display Power Reduction
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Solution Overview
Problem
Emissive displays, such as OLEDs, face challenges in reducing power consumption while maintaining image quality, as they consume more power compared to LCDs and lack content adaptive brightness control, which affects user experience.
Innovation Solution
An apparatus and method that adjust color values in emissive displays by uniformly altering the first color component's value and remapping the second and third color components based on a white point, independently for each pixel, to optimize power efficiency without reducing display brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If OLED displays are used to provide better optical properties, then image quality is improved, but power consumption increases
Solution Approach 1:
The patent changes the color parameters in image data before display, specifically adjusting color values to reduce the activation of high-power subpixels while maintaining perceived image quality through color remapping based on white point calculations
2Use of energy by moving object
If color values are adjusted to reduce power consumption, then energy efficiency is improved, but image quality may deteriorate
Solution Approach 1:
The system calculates the white point from adjusted color values and uses this feedback to remap remaining color components, ensuring that power consumption is reduced while maintaining accurate color representation and image quality
Solution Approach 2:
The patent transforms color parameters in image data by adjusting one color component and remapping others based on white point, thereby reducing power consumption without sacrificing image quality
3Use of energy by moving object
If content adaptive brightness control is implemented, then power consumption is reduced, but display brightness is lowered
Solution Approach 1:
Instead of reducing overall display brightness, the patent segments the power consumption reduction at the subpixel level by selectively adjusting color values for individual color components, maintaining full display brightness while achieving power savings
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces power consumption in emissive displays while preserving image quality by adjusting color values to maintain the white point, achieving similar power savings to content adaptive brightness control in LCDs without dimming the display.
Implementation Method 1
each pixel of the display containing a first subpixel that emits a first color component, a second subpixel that emits a second color component, and a third subpixel that emits a third color component
Data Source
AI summary
For adjusting color values in image data for an emissive display, a method receives a frame of image data and adjusts a color value of a first color component by predetermined amount and identifies a white point from the adjusted color value of the first color component for each pixel in the frame of image data. The method remaps, for each pixel in the frame of image data, color values for a second color component and for a third color component based on the white point and controls the emissive display to present the frame of image data using the adjusted color value and the remapped color values. Each pixel of the emissive display includes a first subpixel that emits the first color component, a second subpixel that emits the second color component, and a third subpixel that emits the third color component.