Segmented APL Brightness Control for Display Power and Detail
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Solution Overview
Problem
Existing display technologies face issues with high power consumption and inadequate detail performance due to uniform brightness adjustment based on gray scale, leading to discomfort and inefficiency.
Innovation Solution
A brightness determination method that segments the average picture level into multiple intervals, adjusting the maximum display brightness value differently in each interval to match human eye sensitivity, reducing brightness in high gray scale images and enhancing detail in low gray scale images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If uniform brightness adjustment based on gray scale is used, then display consistency is maintained, but power consumption increases and detail performance becomes inadequate
Solution Approach 1:
The patent segments the average picture level (APL) into multiple intervals (first APL interval and second APL interval). When APL falls within the first interval, a first maximum display brightness value is used; when APL falls within the second interval, a second maximum display brightness value is used. This segmentation allows differentiated brightness control strategies for different image content types, reducing power consumption for high-brightness images while preserving detail performance for low-brightness images.
Solution Approach 2:
The patent applies different brightness control characteristics to different APL intervals. In the first APL interval, the maximum display brightness value is adjusted with a smaller rate of change, preserving brightness details. In the second APL interval, the maximum display brightness value is adjusted with a larger rate of change, reducing power consumption. This local quality approach optimizes both power efficiency and image quality for different content scenarios.
2Use of energy by moving object
If brightness is reduced for high gray scale images, then power consumption decreases, but detail performance may be compromised
Solution Approach 1:
The patent dynamically adjusts the maximum display brightness value based on the calculated APL and its interval. The system transitions between different brightness control modes (first maximum brightness value for APL in first interval, second maximum brightness value for APL in second interval) according to real-time image content characteristics. This dynamic adjustment ensures power efficiency while preserving brightness details when needed.
Solution Approach 2:
The patent changes the parameter of maximum display brightness value based on APL intervals. By defining different maximum brightness values for different APL ranges and adjusting the rate of change differently in each interval, the system achieves both power reduction and detail preservation through parameter optimization.
3Manufacturing precision
If brightness is enhanced for low gray scale images, then detail performance improves, but power consumption increases
Solution Approach 1:
The patent segments the APL range into distinct intervals with different brightness control strategies. The first APL interval uses a first maximum display brightness value with smaller rate of change to preserve details, while the second APL interval uses a second maximum display brightness value with larger rate of change to reduce power consumption. This segmentation ensures detail enhancement only when necessary.
Solution Approach 2:
The patent optimizes the maximum display brightness value parameter based on APL intervals. By setting appropriate maximum brightness values and rate of change parameters for each interval, the system enhances detail performance for low-brightness content while avoiding unnecessary power consumption for high-brightness content.
Data Source
AI summary
A brightness determination method and device, a display panel, an electronic equipment, and a storage medium are provided. The method includes: determining, based on an image to be displayed, first display brightness values corresponding to the pixels; determining, based on the first display brightness values, a reference average picture level; and determining, based on the reference average picture level and information about a relationship between an average picture level and a maximum display brightness value, a target maximum display brightness value during display of the image to be displayed. The information includes information on variation of the maximum display brightness value with the average picture level in the at least two segment intervals; in different segment intervals, the maximum display brightness value varies at different rates with the average picture level; in at least one segment interval, the maximum display brightness value decreases as the average picture level increases.