Jitter Measurement Circuit With Edge Displacement Accumulation
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Solution Overview
Problem
Existing network signal measurement technologies fail to accurately measure signal quality degradation due to factors like electromagnetic interference and poor connections, necessitating improved methods to assess and counteract signal degradation.
Innovation Solution
A circuit and method for measuring jitter by detecting input edges, analyzing sample windows, and using accumulators and integrators to quantify and sum displacement values, providing an accumulated jitter value for signal quality assessment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing network signal measurement technologies are used, then the measurement process is simple, but the measurement precision is insufficient to accurately quantify jitter and signal quality degradation
Solution Approach 1:
The jitter measurement circuit is divided into functional modules: edge detector circuit for detecting signal transitions, movement counter circuit for tracking edge position changes, and accumulator circuits for summing displacement values. This segmentation allows each module to perform a specific function with high precision while maintaining overall system manageability.
Solution Approach 2:
The patent introduces intermediary components such as the movement counter circuit that acts as a mediator between the edge detector and the accumulator. This intermediary processes the raw edge detection data into displacement values, enabling precise jitter measurement without requiring direct complex interactions between all circuit components.
2Measurement precision
If more sophisticated signal quality measurement methods are implemented, then the measurement precision improves, but the ease of operation decreases
Solution Approach 1:
The jitter measurement circuit is designed to automatically detect edges, count movements, and accumulate values without requiring external intervention. The circuit self-regulates the measurement process by continuously monitoring signal transitions and updating the jitter calculation in real-time, maintaining ease of operation while achieving high measurement precision.
Solution Approach 2:
The measurement circuit incorporates feedback mechanisms where the accumulated jitter values are continuously used to update the signal quality assessment. This feedback loop allows the system to adapt to changing signal conditions automatically, maintaining operational simplicity while improving measurement accuracy through continuous refinement of the jitter calculation.
Data Source
AI summary
Aspects of the present disclosure include a method, a switch, and/or a computer readable medium for analyzing a window of samples at an expected position of a plurality of input edges of a plurality of input waveforms, detecting the plurality of input edges, measuring a displacement of each input edge, with respect to a previous position, of the plurality of input edges, generating a value of the displacement of each input edge, incrementing a corresponding counter value of a plurality of accumulator values in response to each value of the displacement of a corresponding accumulator of the plurality of accumulators, normalizing the plurality of accumulator values, generating the plurality of accumulator values, summing the plurality of accumulator values output by the plurality of accumulators to generate an accumulated jitter value, and sending jitter result information based on the accumulated jitter value.