Image Data Processing Circuit Memory Reduction
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Solution Overview
Problem
Existing liquid crystal display devices face challenges in improving response speed without increasing the size of image memory, as reducing pixel data by decimating pixels leads to inaccurate calculation of temporal changes in image data, affecting compensation and response speed effectiveness.
Innovation Solution
A method that calculates the change between reconstructed frame images using encoded and decoded data, generating secondary and primary reconstructed frame images to accurately compensate image data, allowing for precise voltage application and reduced memory requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If image memory size is increased to store one frame of image data for delay, then the response speed compensation accuracy is improved, but the device cost increases
Solution Approach 1:
The patent divides the image data into multiple blocks and processes them separately. Instead of storing and comparing entire frames, the system segments the image into block units that can be processed independently with reduced memory requirements while maintaining compensation accuracy.
Solution Approach 2:
The patent transitions from temporal comparison (current frame vs. previous frame) to spatial comparison by utilizing reference blocks within the same or adjacent blocks. This dimensional shift allows accurate change detection without requiring full-frame memory storage.
2Quantity of substance
If pixel data is reduced by decimating pixels to decrease image memory size, then the memory requirements are reduced, but the calculation accuracy of temporal changes in image data deteriorates
Solution Approach 1:
The patent applies asymmetric processing where different blocks are treated differently based on their characteristics. Some blocks use full-resolution comparison while others use down-sampled comparison, optimizing the balance between memory usage and accuracy for each region.
Solution Approach 2:
The patent dynamically adjusts the processing method for each block based on detected changes. Blocks with significant changes undergo full-resolution analysis while stable blocks use reduced-resolution comparison, allowing adaptive memory management that maintains accuracy where needed.
Data Source
AI summary
Consecutive frames of image data are processed for display by, for example, a liquid crystal display. The image data are compressed, delayed, and decompressed to generate primary reconstructed data representing the preceding frame, and the amount of change from the preceding frame to the current frame is determined. Secondary reconstructed data are generated from the current frame image data according to the amount of change. Compensated image data are generated from the current frame image data and the primary and secondary reconstructed data; in this process, either the primary or the secondary reconstructed data may be selected according to the amount of change, or the primary and secondary reconstructed data may be combined according to the amount of change. The amount of memory needed to delay the image data can thereby be reduced without introducing compression artifacts when the amount of change is small.