Display Driving Chip for High-Frequency Image Restoration
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Solution Overview
Problem
Existing display driving methods for LCD devices suffer from poor image quality due to the loss of high-frequency details during the decompression of compressed frame data, leading to the 'dynamic image streaking' phenomenon.
Innovation Solution
The method involves down-sampling and decompressing current and previous frame images, up-sampling them to restore original resolution, and performing high-frequency information restoration using motion estimation and interpolation algorithms to generate pre-overdrive display data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If down-sampling and decompression are used to reduce bandwidth and storage requirements, then bandwidth and storage are reduced, but high-frequency details are lost causing image quality degradation
Solution Approach 1:
The patent segments the image processing into multiple stages: down-sampling to reduce data量, decompression to recover data, up-sampling to restore resolution, and high-frequency restoration to recover lost details. This segmented approach allows bandwidth reduction while systematically addressing quality loss at each stage.
Solution Approach 2:
The patent performs preliminary down-sampling and decompression before the main display rendering process. By preparing compressed and decompressed frame data in advance, the system reduces bandwidth requirements for real-time transmission while maintaining the ability to restore image quality when needed.
2Speed
If pre-overdrive is used to reduce grayscale changing time, then response time is improved, but image quality deteriorates due to loss of high-frequency details
Solution Approach 1:
The patent performs high-frequency restoration on the previous frame data in advance, before generating pre-overdrive signals. This preliminary restoration ensures that when pre-overdrive is applied for fast grayscale transition, the source data already contains restored high-frequency details, preventing quality loss.
Solution Approach 2:
The patent introduces high-frequency restoration as an intermediary process between decompression and pre-overdrive generation. This intermediary step recovers lost high-frequency information, acting as a mediator that preserves image quality while allowing the speed benefits of pre-overdrive to manifest.
3Manufacturing precision
If high-frequency restoration is performed on both current and previous frames, then image quality is improved, but processing complexity increases
Solution Approach 1:
The patent applies high-frequency restoration selectively based on local image characteristics. By analyzing the current and previous frames and applying restoration primarily where high-frequency details are most critical (such as edges and transitions), the system improves image quality while reducing unnecessary processing in uniform areas.
Solution Approach 2:
The patent performs high-frequency restoration on the previous frame with sufficient detail to support pre-overdrive, and on the current frame to maintain overall quality. This partial application focused on critical frames balances processing complexity with image quality improvement, avoiding full restoration on all frames which would be excessively complex.
Data Source
AI summary
The present disclosure relates to a display driving method, module, chip, electronic device, and a storage medium. Some embodiments of the present disclosure provide a display driving method, module, chip, electronic device, and a storage medium to improve the quality of the image presented. The present disclosure relates in part to the field of semiconductor integrated circuits.