Display Frequency Controller for Power Optimization
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Solution Overview
Problem
Current display apparatuses fail to sufficiently reduce power consumption while maintaining display quality, particularly when displaying moving images, as they often operate at higher frequencies even during static image viewing.
Innovation Solution
A display apparatus with a frequency controller that adjusts the driving frequency of the display panel based on the input image data and play speed setting, using a play mode determiner, static image determiner, flicker value storage, and driving frequency determiner to optimize frequency settings for reduced power consumption and enhanced display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display panel operates at a high driving frequency to maintain display quality for moving images, then display quality is improved, but power consumption increases
Solution Approach 1:
The display apparatus dynamically adjusts the driving frequency of the display panel based on the type of image being displayed. When a static image is detected, the system lowers the driving frequency to reduce power consumption. When a moving image is detected, the system maintains a higher driving frequency to ensure display quality. This dynamic adaptation resolves the contradiction by making the operating frequency variable rather than fixed.
Solution Approach 2:
The system changes the driving frequency parameter according to the image type. By detecting whether the input image is static or moving, the frequency controller adjusts the driving frequency parameter accordingly - using a first (lower) frequency for static images and a second (higher) frequency for moving images, thus optimizing both power consumption and display quality.
2Use of energy by moving object
If the display panel operates at a low driving frequency to reduce power consumption during static image viewing, then power consumption is reduced, but display quality may deteriorate
Solution Approach 1:
The system dynamically switches between different driving frequencies based on image type detection. When static images are detected, the system transitions to a lower driving frequency to reduce power consumption. When moving images are detected, the system transitions to a higher driving frequency to maintain display quality. This dynamic switching resolves the contradiction by adapting the frequency to the actual display requirements.
Solution Approach 2:
The driving frequency parameter is changed based on the detected image type. The frequency controller uses a first driving frequency for static images and a second driving frequency for moving images, optimizing the parameter to balance power consumption and display quality for each scenario.
3Reliability
If the display apparatus uses a fixed high driving frequency for all image types, then display quality is maintained, but power consumption cannot be sufficiently reduced
Solution Approach 1:
Instead of using a fixed driving frequency, the system implements dynamic frequency adjustment based on image type detection. The frequency controller detects whether the input image is static or moving and accordingly selects an appropriate driving frequency, enabling the system to reduce power consumption during static image display while maintaining quality during moving image display.
Solution Approach 2:
The system changes the driving frequency parameter according to the type of image being displayed. By using a first driving frequency for static images and a second driving frequency for moving images, the system optimizes energy efficiency without compromising display quality when needed.
Data Source
AI summary
A display apparatus includes a display panel, a data driver and a frequency controller. The display panel displays an image based on an input image data. The data driver outputs a data voltage to the display panel. The frequency controller determines a driving frequency of the display panel based on the input image data and a play speed setting.