LCD Backlight Control via Weighted Intensity Blending

The display screen is divided into multiple luminous areas, each with independently controllable backlight luminance. This segmentation enables localized brightness adjustment, allowing the system to reduce overall power consumption by dimming areas that do not require high brightness while maintaining high brightness only in areas containing bright objects, thus resolving the contradiction between power consumption reduction and natural luminance display.

Different luminous areas are assigned different backlight luminance levels based on their local content requirements. The system calculates representative values for each luminous area and adjusts the backlight luminance locally according to these values, ensuring that each area has the appropriate brightness quality for its specific content, thereby avoiding unnatural luminance variations while optimizing power consumption.

The system performs preliminary calculations of representative values for all luminous areas before adjusting backlight luminance. By pre-calculating the required luminance levels based on video signal analysis, the system can smoothly transition between different luminance states as bright objects move across boundaries, avoiding sudden jumps while maintaining accurate tracking of bright object positions.

The backlight luminance control system dynamically adjusts luminance levels in response to moving bright objects. The representative value calculations and subsequent luminance adjustments are continuously updated as objects move, enabling the system to track bright objects accurately while maintaining smooth, natural transitions in luminance that prevent observer discomfort.