Temporal Alignment System for 4K Video Signal Transport
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Solution Overview
Problem
The broadcast and production signal transport of ultra-high definition signals, such as 4K, faces challenges in maintaining temporal alignment across multiple transport links without the use of time stamps, leading to potential misalignment and loss of fidelity.
Innovation Solution
A system and method for detecting and correcting temporal misalignment in 4K video frames by dividing the signal into portions, using a signal divider and reassembler, and a misalignment monitor that evaluates average picture level changes to determine and correct misalignment, ensuring proper alignment of frames across multiple links.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If video signals are divided into multiple portions for transport over multiple links, then the bandwidth and transport capacity are improved, but temporal misalignment occurs between the signal portions leading to loss of signal fidelity
Solution Approach 1:
The video signal is divided into multiple portions (e.g., four portions for 4K signals) that can be transported over separate links. Each portion is independently transportable, enabling parallel transmission and increased overall transport capacity while maintaining the ability to reconstruct the original signal at the destination.
Solution Approach 2:
Time stamps are embedded into each video signal portion before division and transport. This preliminary action ensures that each portion carries timing information necessary for subsequent realignment, preventing temporal misalignment issues from compromising signal fidelity during reconstruction.
2Measurement precision
If time stamps are embedded in signal portions to maintain temporal alignment, then the temporal alignment accuracy is improved, but the device complexity and processing overhead increase
Solution Approach 1:
Time stamps serve as an intermediary element that mediates between the divided signal portions and the realignment process. These timestamps carry timing information that enables the misalignment monitor to detect and correct temporal misalignment without requiring complex synchronization mechanisms, thus improving alignment accuracy while limiting complexity increases.
3Adaptability or versatility
If multiple transport links are used for 4K signal transport, then the signal transport flexibility and capacity are improved, but temporal misalignment and fidelity loss occur
Solution Approach 1:
A misalignment monitor is implemented to continuously monitor the temporal alignment of reassembled signal portions. This feedback mechanism detects temporal misalignment conditions and enables corrective actions to be taken, ensuring that signal fidelity is maintained despite the use of multiple flexible transport links.
Data Source
AI summary
A temporal alignment system and method for example for detecting temporal misalignment in video frames when the frames are divided for transport using a signal divider for dividing a single signal S into portions S1 . . . SN and using average picture level in determining whether data sets within a particular frame are misaligned.