Frame Rate Conversion via Original Signal Recovery
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Solution Overview
Problem
Existing frame rate conversion methods in display devices often result in image dithering and lost frames due to calculation errors, as they perform Motion Estimation and Motion Compensation (MEMC) directly on signals that have undergone frame rate conversion without knowing the original conversion schemes.
Innovation Solution
The method involves extracting target frames from the received video signal that have the same content as the original signal frames, recovering the original signal frame, and then performing the MEMC process on the recovered signal to avoid errors and frame loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If MEMC process is performed directly on converted video signal, then frame rate conversion is achieved, but image dithering and frame loss occur due to calculation errors
Solution Approach 1:
The patent applies preliminary action by recovering the original signal frame before performing the MEMC process. The frame rate conversion unit first obtains the original signal frame through recovery operations, then uses this recovered frame as input for MEMC. This preliminary recovery step ensures that the MEMC process works with accurate original data, preventing calculation errors, image dithering, and frame loss that would occur when processing converted signals directly.
2Speed
If frame rate conversion is performed without recovering original frames, then processing speed is maintained, but calculation errors lead to lost frames
Solution Approach 1:
The system performs preliminary frame recovery before MEMC processing, obtaining the original signal frame that contains complete information. This recovered frame serves as the basis for subsequent processing, ensuring no information is lost during the conversion process while maintaining processing efficiency through optimized recovery algorithms.
3Manufacturing precision
If MEMC is performed on recovered original signal, then image quality is improved, but additional processing steps are required
Solution Approach 1:
The patent merges the frame recovery operation with the frame rate conversion process. The frame rate conversion unit integrates both the recovery of original signal frames and the conversion operations into a unified processing pipeline. This combination achieves high image quality through MEMC on recovered frames while reducing overall processing complexity by eliminating separate recovery and conversion stages.
Data Source
AI summary
An apparatus and method for converting a frame rate, the method including: receiving a first video signal; extracting target frames corresponding to the first video signal, wherein the target frames include same content as original signal frames corresponding to the first video signal; generating a second video signal from the target frame; and performing a Motion Estimation and Motion Compensation (MEMC) process on the second video signal.