Side Refresh Isolator Channel to Prevent Data Signal Collisions
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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, where N isolators handle data signals and an additional isolator handles refresh signals, ensuring that refresh signals are transmitted separately to prevent collisions and maintain accurate signal interpretation without increasing propagation delay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If refresh signals are transmitted on the same isolator channel as data signals, then device complexity is reduced, but signal collision occurs causing misinterpretation at the receiver
Solution Approach 1:
The patent divides the isolator system into separate channels: N isolators for data signal transmission and one additional isolator for refresh signal transmission. This segmentation prevents signal collisions by physically separating refresh and data signal paths, resolving the contradiction between device simplicity and signal reliability.
Solution Approach 2:
The patent introduces an additional isolator as an intermediary component specifically for refresh signal transmission. This mediator prevents direct interaction between refresh and data signals that would cause collisions, while maintaining overall system functionality through coordinated operation of all N+1 isolators.
2Reliability
If guard provisions are added to prevent refresh-signal collisions, then signal interpretation accuracy is improved, but propagation delay increases
Solution Approach 1:
The patent extracts the refresh signal transmission function from the data signal channel and places it in a separate isolator channel. This removes the need for guard provisions and collision avoidance mechanisms in the data path, thereby preventing signal interpretation errors without introducing additional propagation delay.
3Device complexity
If a common isolator is used for both data and refresh signals, then device complexity is reduced, but signal collisions cause decoding errors
Solution Approach 1:
The patent segments the isolator configuration into N dedicated data isolators and one dedicated refresh isolator. This physical separation ensures that refresh signals cannot collide with data signals, preventing decoding errors at the receiver while maintaining clear signal integrity in each channel.
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.