Display Brightness Adjustment via Viewpoint Tracking
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Solution Overview
Problem
Display devices face limitations in adjusting image brightness to accurately represent scenes with varying light intensities, leading to underexposure or overexposure, which can affect the viewer's perception of reality and actuality.
Innovation Solution
A method and device that adjust the brightness of a display by determining current and previous viewpoint brightness information, temporarily increasing or decreasing brightness based on thresholds, and gradually adjusting to a default level, mimicking physiological light and dark reactions to match the surrounding environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the display device uses a fixed number of lights to display an image, then the device structure remains simple and energy consumption is controlled, but the display cannot accurately represent scenes with varying light intensities, leading to underexposure or overexposure
Solution Approach 1:
The patent applies dynamics by making the brightness of display regions dynamically adjustable based on viewpoint information. The display device transitions from a static brightness configuration to a dynamic one where brightness levels change according to the user's viewing angle and position, allowing accurate representation of varying light intensities without permanently increasing device complexity
Solution Approach 2:
The patent implements local quality by applying different brightness levels to different regions of the display corresponding to different viewpoint regions. Each region's brightness is independently adjusted based on its specific viewpoint characteristics, enabling localized brightness control that improves overall brightness accuracy without requiring uniform complexity across the entire display
2Measurement precision
If the display device adjusts brightness uniformly across all regions, then the implementation is simple, but it cannot compensate for viewpoint-specific brightness variations, leading to unrealistic image perception
Solution Approach 1:
The patent applies segmentation by dividing the display into multiple distinct regions, each corresponding to a specific viewpoint region. This segmentation allows independent brightness control for each region based on its viewpoint characteristics, enabling precise brightness perception without requiring complex manual control of individual pixels or regions
3Adaptability or versatility
If the display device instantly changes brightness to match current viewpoint conditions, then the response is fast and adaptive, but it creates abrupt transitions that disrupt viewer experience and do not match physiological light adaptation
Solution Approach 1:
The patent implements preliminary action by pre-defining multiple brightness levels and transition intervals before actual brightness changes occur. The system prepares a sequence of brightness adjustments with specific timing intervals, allowing smooth transitions that anticipate viewer adaptation needs rather than reacting abruptly to viewpoint changes
Solution Approach 2:
The patent applies periodic action by using predetermined transition intervals between different brightness levels. The brightness changes occur in a rhythmic, periodic manner rather than instantaneously, with each transition occurring after a specific time interval that mimics the natural periodic adaptation of human vision to light changes
Data Source
AI summary
A method and device for adjusting a brightness of a display includes, determining current viewpoint brightness information of a current viewpoint region on the display corresponding to a user current viewed point or area of the display, determining previous brightness information of a previous viewpoint region of the display corresponding to a previously viewed point or area of the display, and controlling a displaying of a current image, including the current viewpoint region, with an adjusted brightness for a partial region of the display based on a comparison of the current viewpoint brightness information and the previous brightness information.