Display Device Data Correction for Reduced Processing Load
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Solution Overview
Problem
Existing display devices face challenges in reducing the bit number of image data while maintaining color depth, leading to increased size and processing time for data drivers and timing control units, especially in virtual reality applications with frequent gray scale changes.
Innovation Solution
A display device and method that involves a data correcting unit to generate (n-a)-bit corrected image data from n-bit input data, using a data processing unit to divide the data, a frame determining unit to manage frame signals, and a position determining unit to adjust output positions, allowing for reduced bit processing without compromising color depth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the bit number of image data is increased to implement high color depth, then the color depth quality is improved, but the size of the data driver and processing time are increased
Solution Approach 1:
The patent divides the display panel into a first display area and a second display area, and processes image data for each area separately. By segmenting the display areas and applying different bit number reduction strategies to each, the system maintains color depth quality in critical areas while reducing overall data processing complexity and driver size requirements.
Solution Approach 2:
The patent changes the bit number parameter of image data from n-bit to (n-a)-bit by reducing the bit number. This parameter change allows the system to process data with fewer bits while maintaining perceived color depth quality through the segmented display approach, thereby reducing data driver size and processing time.
2Measurement precision
If the bit number of image data is increased to implement high color depth, then the color depth quality is improved, but the data transmission amount is increased
Solution Approach 1:
The patent segments the display panel into first and second display areas, allowing different bit number reduction strategies to be applied to each segment. This segmentation enables the system to reduce overall data transmission amount by processing each area with appropriate bit reduction while maintaining color depth quality where necessary.
Solution Approach 2:
The patent applies bit number reduction partially to certain display areas rather than uniformly across the entire display. By selectively reducing bits in specific areas where full color depth is less critical, the system achieves reduced data transmission amounts while maintaining acceptable color depth quality overall.
3Productivity
If the bit number of image data is reduced to decrease data processing load, then the processing speed is improved, but the color depth quality may be degraded
Solution Approach 1:
The patent divides the display into first and second display areas and applies different processing strategies to each. This segmentation allows the system to reduce bit number (improving processing speed) in areas where color depth reduction is acceptable, while maintaining higher quality processing in areas where color depth is critical, thus balancing speed and quality.
Solution Approach 2:
The patent applies different quality levels to different display areas. By making the first and second display areas have different gray scale characteristics, the system optimizes local quality in each area according to its specific requirements, allowing overall processing speed improvement without uniform quality degradation across the entire display.
4Device complexity
If the bit number of image data is reduced to reduce device size, then the data driver size is decreased, but the processing capability for high color depth is reduced
Solution Approach 1:
The patent segments the display panel into first and second display areas with different processing requirements. This segmentation allows the data driver to be designed with reduced size (processing (n-a)-bit data) while still maintaining the capability to handle high color depth requirements in specific areas through selective processing strategies.
Solution Approach 2:
The patent creates a multi-functional processing system where the same data driver can handle both reduced-bit data efficiently and maintain compatibility with higher color depth requirements when needed. By making the display system adaptable to different bit number inputs and applying different strategies to different areas, the driver achieves universal functionality with reduced size.
Data Source
AI summary
The present disclosure relates to a display device and a driving method of a display device. The display device includes a display panel including a first display area and a second display area; a data correcting unit which is applied with n-bit input image data to generate (n-a)-bit corrected image data; a timing control unit which is applied with the (n-a)-bit corrected image data to generate (n-a)-bit output image data; and a data driving unit which is applied with the (n-a)-bit output image data to output a first data voltage to a first pixel disposed in the first display area and output a second data voltage to a second pixel which is disposed in the second display area and corresponds to the first pixel. Therefore, corrected image data which has a lower bit number than that of input image data is used to express the same color depth as a color depth which is expressed by the input image data so that the size of the data is reduced and the data amount processed by the timing control unit and the data driver is reduced. Therefore, the processing speed of the timing control unit and the data driver may be improved.