Semiconductor Display Driver Frame Rate Conversion
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Solution Overview
Problem
Conventional designs for mobile devices consume excessive power and space when processing multimedia data, leading to rapid battery drain and increased die size due to the need for large processing circuits and frame buffers.
Innovation Solution
A semiconductor display driver device that performs frame rate conversion by generating inserting frames based on the changing trend between input frames, using overall motion vectors to predict future frames and reduce the need for multiple frame buffers, thereby optimizing power consumption and die size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional designs store both current and next frames in frame buffers for processing, then frame processing completeness is improved, but die size and power consumption increase
Solution Approach 1:
The patent applies preliminary action by predicting the next frame using motion vectors and reference frames before it is actually received. This allows the system to prepare processing data in advance, reducing the need to store the complete next frame in buffer memory, thereby reducing die size while maintaining processing reliability
Solution Approach 2:
The patent uses copying by creating predicted frame data from reference frames and motion vectors instead of storing complete frame buffers. The predicted frame serves as a copy or approximation of the actual next frame, reducing memory requirements while maintaining sufficient processing accuracy
2Productivity
If conventional designs use large processing circuits for multimedia data processing, then processing capability is improved, but power consumption increases
Solution Approach 1:
The patent extracts and processes only the essential motion information (motion vectors) and reference frame data instead of processing complete frame buffers. This selective extraction of critical processing elements reduces the computational burden and power consumption while maintaining adequate processing capability
Solution Approach 2:
The patent changes the processing parameters by working with motion vectors and predicted frame data rather than complete frame buffers. This parameter change reduces the data volume requiring processing, thereby reducing power consumption while maintaining processing capability
3Measurement precision
If conventional designs store complete frame buffers for current and next frames, then frame conversion accuracy is improved, but power consumption and die size increase
Solution Approach 1:
The patent performs preliminary frame prediction using motion vectors and reference frames before the next frame arrives. This preliminary action provides sufficiently accurate frame conversion data without requiring complete storage of the next frame, reducing power consumption while maintaining conversion accuracy
Solution Approach 2:
The patent creates a predicted copy of the next frame using motion-compensated interpolation from reference frames. This copied data provides adequate accuracy for frame conversion without requiring the power-intensive storage and processing of complete frame buffers
Data Source
AI summary
A method of frame rate conversion includes receiving multiple input frames including a previous frame, a current frame and a next frame. A changing trend between the current frame and the previous frame is calculated. The current frame is used for generating one or more than one inserting frame according to the changing trend. The inserting frame is output after outputting the current frame to achieve frame conversion.