Frame Rate Conversion via Adaptive Playback Speed and Frame Duplication

The patent applies dynamics by making the frame duplication strategy adaptive rather than static. The system dynamically adjusts which frames to duplicate based on motion detection and scene complexity analysis. When motion is detected, the system reduces duplication to maintain smooth playback; when motion is minimal, it increases duplication to ensure synchronization. This dynamic adaptation resolves the contradiction by making the synchronization process responsive to content characteristics, thereby reducing visible artifacts while maintaining reliability.

The patent changes parameters by introducing multiple duplication levels (first-order, second-order, third-order duplications) and selectively applying them based on temporal and spatial analysis. Instead of uniformly duplicating frames, the system varies the duplication parameter locally across different frames and time intervals. This parameter variation allows the system to achieve synchronization while minimizing the visual impact of duplications, thus reducing jitter and artifacts.

The patent uses copying by creating duplicate frames from the original video content instead of reencoding. The system generates first-order, second-order, and third-order duplicate frames by copying and combining original frames in different sequences. This copying approach achieves smooth playback adaptation to different refresh rates without the computational complexity of reencoding, as copying frames is significantly less resource-intensive than full video reencoding.

The patent applies segmentation by dividing the video processing into distinct stages: original frame processing, first-order duplication, second-order duplication, and third-order duplication. Each stage handles specific frames based on motion characteristics and timing requirements. This segmented approach allows the system to process only necessary frames at each level, reducing overall processing complexity compared to reencoding the entire video stream.

The patent applies periodic action by organizing frame duplications into regular patterns (first-order, second-order, third-order duplications) that repeat at specific intervals. The system uses presentation timestamps and time-based logic to determine when to apply each type of duplication, creating a periodic structure to the frame rate conversion process. This periodic approach maintains synchronization accuracy while limiting playback speed variations to predictable, manageable ranges.

The patent uses dynamics by adjusting the playback speed and duplication strategy based on the specific time interval and content characteristics. The system dynamically determines the appropriate duplication order and timing based on motion detection and temporal analysis, allowing it to maintain synchronization accuracy while adapting playback speed to minimize visible variations. This dynamic adjustment prevents excessive speed variations even over longer time intervals.