Video Signal Frame-Rate Conversion Under Genlock Synchronization
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Solution Overview
Problem
Existing systems struggle to process video signals with frame rates different from the frequency of the imaging equipment synchronization signal, making it difficult to synchronize display and re-imaged videos effectively.
Innovation Solution
An information processing system and method that processes input video signals of a first frame rate different from the imaging equipment synchronization signal, allowing output of a video signal with a frame rate different from the synchronization signal frequency, using a signal processing unit and output unit to adjust and synchronize the frame rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a normal device performs processing on a video signal having the same frame rate as the frequency of the imaging equipment synchronization signal, then the processing can be performed on the basis of the synchronization signal, but it is difficult to perform processing on a video signal having a frame rate different from the frequency of the synchronization signal
Solution Approach 1:
The patent applies parameter changes by converting the video signal from its original frame rate to a different frame rate through interpolation or conversion processing. The signal processing unit changes the temporal parameter (frame rate) of the video signal while maintaining synchronization with the imaging equipment synchronization signal, enabling compatibility between different frame rates without increasing system complexity
Solution Approach 2:
The patent achieves universality by designing a signal processing unit that can handle multiple frame rates using the same imaging equipment synchronization signal as a reference. The system can process video signals with various frame rates (e.g., 24fps, 30fps, 60fps, 120fps) by performing appropriate frame rate conversion, making the system adaptable to different video sources and display requirements
2Productivity
If the frame rate of the display video is increased to reduce latency, then the display smoothness is improved, but the synchronization with the re-imaged video becomes difficult when using the same frequency synchronization signal
Solution Approach 1:
The patent uses the imaging equipment synchronization signal as an intermediary reference to coordinate between the display video and re-imaged video. The signal processing unit generates a converted video signal at a higher frame rate (e.g., 60fps or 120fps) while using the original synchronization signal as a temporal reference, ensuring that the high-frame-rate display remains synchronized with the camera's re-imaging process
Solution Approach 2:
The patent applies dynamics by allowing the display frame rate to be dynamically adjusted to integral multiples of the synchronization signal frequency (e.g., 2×, 3×, or 4× the base frequency). This dynamic frame rate selection enables the system to optimize between latency reduction and synchronization requirements based on the specific application needs
Data Source
AI summary
The present technology relates to an information processing system and an information processing method capable of, on the basis of an imaging equipment synchronization signal, performing processing on a video signal of a frame rate different from a frequency of the imaging equipment synchronization signal.On the basis of a genlock signal as the imaging equipment synchronization signal, a signal processing unit performs output video signal generation processing on an input video signal that is a video signal of an input frame rate different from a frequency of the genlock signal. A signal output IF outputs an output video signal of an output frame rate different from the frequency of the genlock signal on the basis of the output video signal generation processing on the input video signal.