Differential Signaling Error Interruption via Current Change Detection
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Solution Overview
Problem
Differential signal systems face issues with error detection and correction, as receivers cannot notify transmitters of errors until the data payload is complete, leading to transmission of invalid data until the error is rectified.
Innovation Solution
A differential signaling system with current source and sense circuitry in transmitters and receivers that detect changes in differential signal current magnitudes, allowing for the interruption of signal transmission upon error detection, using first and second signal electrodes and differential signal transmission/reception circuitry to manage supply currents and provide status signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the receiver waits until the transmitter finishes sending the complete data payload before sending the error detection signal, then the bi-directional signal link protocol is maintained, but significant amounts of invalid data are transmitted before the transmitter is notified of the error
Solution Approach 1:
The patent applies preliminary action by enabling the receiver to send error detection signals immediately upon detecting an error, before the transmitter finishes sending the complete data payload. This is achieved by using a separate error detection signal path that does not wait for the data transmission to complete, allowing the transmitter to be notified of errors in real-time and stop transmission promptly, thus preventing further waste of time transmitting invalid data
2Loss of time
If the receiver sends the error detection signal immediately upon detecting an error, then the time to detect and correct errors is reduced, but the transmitter cannot send the error detection signal until it has finished sending its complete data payload and released control of the differential signal link
Solution Approach 1:
The patent applies segmentation by separating the error detection signal transmission from the data payload transmission. The error detection signal is sent through a dedicated path or mechanism that operates independently from the data transmission sequence, allowing the receiver to notify the transmitter of errors immediately without waiting for the data payload to complete, thus resolving the conflict between timely error detection and maintaining protocol integrity
Solution Approach 2:
The patent uses an intermediary mechanism to facilitate error detection signal transmission. This intermediary allows the receiver to communicate errors to the transmitter without requiring the transmitter to release control of the differential signal link, enabling immediate error notification while maintaining the bi-directional communication protocol
3Productivity
If the transmitter continues transmitting data until notified of an error, then the data transmission throughput is maintained, but significant amounts of valid data following reception of invalid data are transmitted before the transmitter is notified of the error
Solution Approach 1:
The patent applies feedback by implementing an immediate error detection signal mechanism where the receiver continuously monitors incoming data and sends error detection signals back to the transmitter as soon as errors are detected. This real-time feedback loop allows the transmitter to stop transmission immediately upon receiving error notification, preventing further transmission of invalid data while maintaining high throughput for valid data
Data Source
AI summary
A differential signaling system in which errors in signal transmission or reception, or both, can be detected to allow signal transmission to be interrupted and thereby prevent further erroneous signal transmission or reception.