Differential Data Signal Regeneration Under Reflection Distortion
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Solution Overview
Problem
During differential signal transmission, both data and clock signals are affected by reflection, leading to inconsistent waveforms and potential data errors when extracting data from the data signal based on the clock signal.
Innovation Solution
A data transmission method that involves detecting potential at each sampling point within a half data period, determining the logic level of the data signal, and regenerating the signal according to the logic level and a preset amplitude, using a data transmission device with a potential detecting member and a data driver that includes a delay member to manage the timing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If differential signal transmission is used for high-speed data transmission, then transmission speed is improved, but signal reflection causes waveform distortion and data errors
Solution Approach 1:
The patent creates a copy of the transmitted data signal through the reflection path. By detecting the reflected signal and regenerating it, the system produces a duplicate data signal that can be used for verification and error correction, thereby maintaining data accuracy despite signal reflection during high-speed transmission
Solution Approach 2:
The patent implements a feedback mechanism where the reflected signal is detected, analyzed, and used to regenerate the original data signal. This feedback loop allows the system to compensate for waveform distortion caused by reflection, ensuring reliable data reception while maintaining high transmission speed
2Reliability
If reflection is suppressed to maintain signal integrity, then data accuracy is improved, but transmission efficiency decreases
Solution Approach 1:
The patent converts the harmful reflected signal into a beneficial resource by detecting and regenerating it. Instead of suppressing reflection, the system utilizes the reflected signal to create a redundant data copy that enhances reliability, thereby maintaining transmission efficiency while improving signal integrity
3Measurement precision
If clock signal is used to synchronize data sampling, then data capture timing is improved, but timing errors occur due to independent reflection effects on data and clock signals
Solution Approach 1:
The patent creates a copied version of the data signal through reflection and uses this copy to establish timing references. By regenerating the data signal from the reflected copy, the system creates a synchronized timing reference that accounts for reflection effects, eliminating timing errors between independently affected data and clock signals
Solution Approach 2:
The patent introduces asymmetry in the timing approach by using the reflected signal path to determine sampling timing rather than relying solely on the original clock signal. This asymmetric timing strategy compensates for the different reflection effects on data and clock signals, improving both sampling precision and data capture accuracy
Data Source
AI summary
The present application discloses a data transmission method, a data transmission device, and a computer readable storage medium. The data transmission method includes: determining a logic level of the data signal according to detection potential of each sampling point in the data signal, and regenerating the data signal according to the logic level and a preset amplitude.