Side Refresh Channel Isolation for Collision-Free Data Transfer
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Solution Overview
Problem
Existing isolator systems face challenges in managing refresh signaling, leading to potential collisions with data-induced transmission signals, which can result in misinterpretation at the receiver and increased propagation delay.
Innovation Solution
The implementation of an N+1 isolator system that transfers refresh signals based on the state of data signals across an isolation barrier, using an additional isolator to manage refresh signals separately from data signals, thereby avoiding collisions and reducing propagation delay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If refresh signals are transmitted through the same isolator device as data signals, then the number of isolator devices is reduced, but signal collisions occur and propagation delay increases
Solution Approach 1:
The patent divides the isolator system into separate functional channels: N isolator devices dedicated to data signal transmission and one additional isolator device dedicated to refresh signal transmission. This segmentation eliminates signal collisions by ensuring that data and refresh signals traverse different physical paths through the isolation barrier, thereby resolving the contradiction between device complexity and reliability.
2Quantity of substance
If refresh signals are transmitted through the same isolator device as data signals, then hardware resources are conserved, but signal integrity deteriorates due to collisions
Solution Approach 1:
The patent segments the signal transmission paths by allocating separate isolator devices for data and refresh signals. This physical separation prevents signal collisions that would cause misinterpretation at the receiver, thereby maintaining signal integrity while using N+1 isolator devices instead of N.
3Reliability
If guard provisions are added to prevent refresh signal collisions, then signal reliability improves, but propagation delay increases
Solution Approach 1:
The patent eliminates the need for guard provisions by physically separating data and refresh signal paths through different isolator devices. This segmentation allows both types of signals to transmit simultaneously without collisions, achieving high reliability without the time penalty associated with guard periods or collision avoidance protocols.
Data Source
AI summary
A multi-channel isolation system has N+1 isolators for N channels of communication data. N of the isolators may transfer data signals across an isolation barrier, one for each of the N channels of data. An N+1st isolator transfers refresh signals representing state of the data signals on the N isolators. Receiver circuitry, therefore, may receive signals from the N isolation channels without risk for collision with refresh signals. If reception of the refresh signals becomes necessary, circuitry on a receive side of the isolator may switch over to the N+1st receive path to output state data contained in the refresh signals.