Rotating Data Transmission with Active Signal Compensation
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Solution Overview
Problem
Rotating data transmission systems, such as those in computer tomographs, face signal distortions due to frequency-dependent attenuation and dispersion, particularly at high data rates, which are exacerbated by optical data paths and limited by the effectiveness of existing clock recovery circuits.
Innovation Solution
A rotating data transmission system that includes a data source with a first optical transmitter, a light-waveguide, a driver with an optical receiver, a transmitting conductor arrangement, a receiving coupler arrangement, and a data sink with an optical transmitter and receiver, where at least one optical receiver has a linear characteristic and an equalizer to correct frequency response and phase, and a digitizer to process signals, thereby minimizing signal distortions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data is transmitted at high data rates (several tens of gigabits per second) over a long conductor line (about 5 meters), then bandwidth requirement is met, but signal distortions occur due to frequency-dependent attenuation and dispersion
Solution Approach 1:
The patent applies preliminary action by pre-compensating for signal distortions before transmission. An equalizer is configured to compensate for frequency-dependent attenuation and dispersion effects that will occur during transmission over the 5-meter conductor line, thereby maintaining signal quality at high data rates
Solution Approach 2:
The patent implements feedback by using a receiving element with linear characteristic that provides feedback signal to the equalizer. This feedback mechanism allows the equalizer to continuously adjust and optimize compensation for signal distortions, improving reliability while maintaining high transmission rates
2Reliability
If clock recovery circuits are used to improve signals from optical data path, then some signal quality improvement is achieved, but effectiveness is limited particularly at high dispersions
Solution Approach 1:
The patent changes the key parameter of the receiving element to have a linear characteristic, which fundamentally improves adaptability to high dispersion conditions. This linear characteristic enables the equalizer to effectively compensate for severe signal distortions where traditional clock recovery circuits fail
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system achieves high tolerance to signal dispersion, improving signal quality by correcting frequency response and phase, and reducing jitter, resulting in enhanced data transmission reliability and accuracy.
Implementation Method 1
at least one data source for generating a digital data stream with a first optical transmitter
Implementation Method 2
at least one first light-waveguide for transmitting the generated digital data stream from the at least one data source
Implementation Method 3
at least one driver with a first optical receiver for receiving the digital data stream from the first light-waveguide
Data Source
AI summary
A rotating data transmission device for transmitting data from a data source to a data sink between a rotating part and a stationary part comprises a transmitting conductor arrangement which is fed from a transmitter means, and also a receiver means which taps signals from the transmitting conductor arrangement with the aid of a receiving coupler arrangement. The connection between data source and rotating data transmission device, or rotating data transmission device and data sink, is effected by means of light-waveguides. The receivers of the light-waveguides are linear receivers followed by equalizers for correcting the frequency and phase response.