Reception Device DE Signal Prediction for Noise-Resistant Data Separation
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Solution Overview
Problem
Conventional transmission/reception systems face issues with accurately separating video data and SYNC data due to noise interference, leading to incorrect signal reproduction and distorted video display.
Innovation Solution
A reception device equipped with a detection unit, prediction unit, and DE signal prediction reproduction unit that predicts and reproduces the DE signal timing to accurately separate video and SYNC data, even in noisy conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the reception device uses conventional detection methods for BS data and BE data, then the device structure is simple, but the data separation accuracy deteriorates due to noise interference
Solution Approach 1:
The prediction unit performs preliminary action by predicting the timing of BS data and BE data before actual detection. This prediction is based on previously detected timing information and transmission timing data, allowing the detection unit to focus its search within a predicted time window, thereby improving detection accuracy under noise conditions without substantially increasing device complexity
Solution Approach 2:
The system implements feedback by using previously detected BS data and BE data timing information to inform future predictions. The prediction unit continuously updates its predictions based on feedback from actual detections, creating a closed-loop system that improves accuracy over time while maintaining relatively simple device structure
2Reliability
If the reception device relies on accurate detection of BS data and BE data, then the DE signal reproduction is accurate, but the system becomes vulnerable to noise interference
Solution Approach 1:
By predicting the timing of BS data and BE data in advance using the prediction unit, the system prepares for detection before noise can interfere. This preliminary timing prediction creates a buffer that makes the system less vulnerable to transient noise, improving DE signal reproduction reliability
Solution Approach 2:
The prediction mechanism acts as a cushion against noise interference by providing expected timing information before detection occurs. This allows the detection unit to recognize and correct for noise-induced timing errors, protecting the overall DE signal reproduction accuracy from the harmful effects of noise
3Object-affected harmful factors
If the reception device uses prediction-based detection, then noise resistance improves, but the processing complexity increases
Solution Approach 1:
The prediction unit performs relatively simple calculations based on previously detected timing and transmission timing data to predict when BS data and BE data will occur. This preliminary action provides noise resistance through timing prediction without requiring complex processing during the actual detection phase
Solution Approach 2:
The system applies partial action by using prediction only for timing estimation rather than full data validation. The detection unit still performs necessary verification, balancing the added processing from prediction with the need for accurate detection, thereby achieving noise resistance without excessive processing complexity
Data Source
AI summary
The present embodiments relate to a reception device that enables accurate separation of video data and SYNC data sent out from a transmission device in accordance with a data enable (DE) signal, from among reception data even if the reception data deteriorates due to noise. The reception device separates the video data and the SYNC data from the reception data in accordance with the DE signal reproduced using a detection result of the BS data and the BE data representing a transition timing of a signal level of the DE signal and a prediction result of detection timings of the BS data and the BE data or a prediction result of the transition timing of the DE signal.