LCD Backlight Boundary Adjustment for Halation Control
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Solution Overview
Problem
Existing LCD devices face issues with inconsistent halation due to uniform backlight processing across objects of varying sizes and shapes, leading to differing visual experiences and increased power consumption.
Innovation Solution
A backlight adjustment method that determines suitable adjustment schemes for different connected domains within the display screen by analyzing backlight values and applying specific parameters and filtering operators to optimize backlight values at boundary positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the same backlight processing procedure is adopted for objects with different areas and sizes, then the implementation is simple, but the halation effect varies and visual experience is inconsistent
Solution Approach 1:
The patent applies local quality by differentiating backlight processing based on object characteristics. It calculates object area and uses this information to selectively apply different processing procedures: objects with area less than a threshold undergo halation suppression processing, while larger objects receive normal processing. This ensures each object receives appropriate treatment based on its local properties, achieving consistent visual experience without uniform complex processing for all objects.
2Use of energy by moving object
If backlight brightness is reduced to decrease power consumption, then power consumption decreases, but display contrast and visual quality deteriorate
Solution Approach 1:
The patent employs parameter changes by dynamically adjusting backlight brightness based on object characteristics. It calculates object area and uses this parameter to determine processing intensity: smaller objects receive stronger halation suppression with greater brightness reduction, while larger objects maintain higher brightness. This adaptive parameter adjustment reduces overall power consumption while preserving visual quality for prominent objects.
3Object-affected harmful factors
If halation suppression is applied to all objects, then halation is reduced, but small objects may be over-processed and visual quality deteriorates
Solution Approach 1:
The patent applies local quality by making halation suppression processing selective rather than universal. It calculates the area of each object and compares it against a threshold: only objects with area below the threshold undergo halation suppression processing, while larger objects are excluded. This ensures processing precision by applying halation reduction only where it is visually beneficial, avoiding over-processing of prominent objects that would degrade their visual quality.
Data Source
AI summary
A backlight adjustment method and device for a display device, a system, a storage medium and a product. The backlight adjusting method includes: inputting a plurality of frames of images to a display device; acquiring a plurality of backlight matrices corresponding to the plurality of frames of images, wherein the backlight matrix includes a plurality of backlight values; acquiring a connected domain consisting of the backlight value which is a positive number according to the backlight matrix; and determining an adjustment scheme of the backlight value at a boundary position of the connected domain according to the connected domain.