Display Driving Device Adaptive Refresh Frequency Control
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Solution Overview
Problem
The increasing demand for higher display quality and power efficiency in devices like mobile phones and tablets has highlighted the issue of high power consumption in display technology, particularly in terminals that rely on battery power.
Innovation Solution
A display driving device comprising a counting unit, a comparing unit, and a driving unit that adjusts the refresh frequency of a display based on the number of pixel points with different gray level values, optimizing the refresh frequency to reduce power consumption while maintaining user viewing effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the refresh frequency of the display is maintained at a high level to ensure display quality, then the viewing experience is improved, but the power consumption increases
Solution Approach 1:
The patent implements dynamic adjustment of refresh frequency based on the actual content being displayed. The system continuously monitors the gray level distribution of pixel points and adjusts the refresh frequency in real-time, transitioning from a static high refresh rate to a dynamic adaptive rate that matches the visual requirements of the displayed content.
Solution Approach 2:
The patent changes the refresh frequency parameter based on the statistical distribution of gray level values in the displayed image. By calculating the proportion of pixel points in different gray level ranges and comparing it against threshold values, the system selects appropriate refresh frequency parameters from a set of predefined values, optimizing the balance between display quality and power consumption.
2Use of energy by moving object
If the refresh frequency is reduced to lower power consumption, then energy efficiency is improved, but the viewing experience deteriorates
Solution Approach 1:
The patent applies different refresh frequencies to different regions or types of content based on their visual characteristics. By analyzing the gray level distribution and identifying the dominant content type (e.g., dark images, light images, or mixed content), the system applies locally optimized refresh rates that maintain viewing quality for each content type while minimizing overall power consumption.
Solution Approach 2:
The patent uses partial action by selectively maintaining high refresh frequencies only when necessary for specific content types that require it for good viewing experience, while using lower refresh frequencies for content types that are less sensitive to refresh rate changes. This avoids the excessive action of maintaining high refresh frequency for all content indefinitely.
Data Source
AI summary
Embodiments of the disclosure provide a display driving device including: a counting unit configured to count the number of first pixel points whose gray level values are larger than or equal to a first gray level value and the number of the other pixel points whose gray level values are smaller than the first gray level value in an image displayed by a target display, a comparing unit configured to compare the number of the first pixel points and the number of the other pixel points and transmit a first instruction to the driving unit if the former is larger than or equal to the latter, and a driving unit configured to control a refresh frequency of the display to be larger than or equal to a first frequency if the first instruction is received, otherwise, control the refresh frequency of the display to be smaller than the first frequency.