Intra Motion Prediction for LCD Response Time Compensation
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Solution Overview
Problem
Liquid Crystal Display (LCD) systems face challenges with slow response times, leading to image blurring due to the need for storing previous frames in memory for response time compensation techniques like dual or multiple frame overdrive, which increases memory usage and power consumption.
Innovation Solution
A response time compensation system that determines complexity values and motion vectors to compress image information, minimizing memory usage by selectively powering down components based on display mode, using intra motion prediction and variable length encoding to generate a compressed bitstream for efficient display element response time compensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If response time compensation techniques (dual or multiple frame overdrive) are used to improve LCD response speed, then pixel response time is improved, but memory storage requirements increase due to the need to store previous frames
Solution Approach 1:
The patent extracts only the essential motion information from previous frames rather than storing complete frame data. By taking out only the necessary motion vectors and complexity values needed for response time compensation, the system achieves the required functionality with significantly reduced memory storage requirements.
Solution Approach 2:
The patent segments the previous frame data into essential motion information components (motion vectors, complexity values) and non-essential components. Only the segmented essential motion information is stored in memory, while complete frame storage is eliminated, resolving the contradiction between response speed improvement and memory usage.
2Speed
If previous frames are stored in memory for response time compensation, then display element response time is compensated, but power consumption increases
Solution Approach 1:
The patent extracts and stores only the minimal necessary motion information (motion vectors and complexity values) rather than complete frame data. This extraction approach enables response time compensation functionality while dramatically reducing the power consumption associated with memory operations and data processing.
Solution Approach 2:
The patent applies partial action by storing only the portion of frame data that is necessary for response time compensation (motion information) rather than storing complete frames. This partial storage approach provides sufficient compensation functionality while minimizing power consumption.
3Measurement precision
If complete previous frames are stored for overdrive techniques, then motion compensation accuracy is maintained, but system complexity increases
Solution Approach 1:
The patent extracts only the essential motion parameters (motion vectors and complexity values) needed for accurate motion compensation. By taking out only these critical elements rather than storing complete frames, the system maintains motion compensation accuracy while significantly reducing system complexity.
Solution Approach 2:
The patent segments frame data into essential motion information and other components, storing only the motion information segment. This segmentation approach maintains the accuracy needed for motion compensation while simplifying the overall system architecture and reducing complexity.
Data Source
AI summary
An apparatus for a response time compensation system includes a plurality of complexity modules and a motion vector module. The complexity modules determine a plurality of complexity values based on current image information and prior image information. The motion vector module determines a desired complexity value based on a lowest of complexity values. The motion vector determines a desired motion vector based on the lowest of the plurality of complexity values. The desired complexity value and the desired motion vector are used to compress the current image information into a compressed bitstream. The compressed bitstream is used by the response time compensation system to provide display element response time compensation information for a display.