Adaptive Display Power Control for Frame-Dependent Pixel Loads
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Solution Overview
Problem
Existing display devices inefficiently consume power due to the variation in required voltage magnitudes based on image frame patterns, as they supply a uniform power voltage across all frames.
Innovation Solution
A display device that analyzes the pattern of an image frame to supply a minimum power voltage, minimizing power consumption by optimizing the first power voltage based on load values and distribution of blocks within the pixel unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the same power voltage is supplied with respect to all image frames, then the display device can ensure consistent performance across all frames, but it results in inefficient power consumption
Solution Approach 1:
The patent applies dynamics by making the power voltage adaptive rather than static. The display device dynamically adjusts the power voltage supplied to pixel units based on the actual luminance requirements of different image frame patterns. This is achieved through a power voltage adjustment unit that modifies the power voltage in response to detected image characteristics, allowing the system to optimize power consumption while maintaining display performance across varying content types.
Solution Approach 2:
The patent implements parameter changes by varying the power voltage parameter according to image frame patterns. Instead of using a fixed power voltage, the system changes the voltage parameter dynamically based on the luminance demands of different display content. This enables the display device to supply minimum necessary power voltage for each specific image frame, reducing overall power consumption while ensuring adequate performance for each frame's requirements.
2Use of energy by moving object
If a minimum power voltage is supplied based on image frame pattern analysis, then power consumption is reduced, but the system complexity increases due to pattern analysis requirements
Solution Approach 1:
The patent applies preliminary action by performing pattern analysis of image frames before supplying power voltage. The display device analyzes the luminance characteristics of upcoming image frames in advance, allowing it to pre-adjust the power voltage to optimal levels. This preliminary analysis enables the system to prepare the appropriate power voltage setting before actual display, reducing power consumption without requiring complex real-time adjustments during display operation.
Data Source
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AI summary
A display device includes blocks each including two or more pixels commonly coupled to a first power line, and a first power voltage controller for determining a margin value of a first power voltage supplied to the first power line, based on load values of the blocks. The first power voltage controller determines the load values based on grayscale values of the pixels included in each of the blocks. The magnitude of the first power voltage is determined to become smaller as the margin value becomes larger. The margin value includes a first margin value. The first power voltage controller determines the first margin value according to a degree of distribution of load values of first blocks arranged in a first direction among the blocks.