Digital Timing Event Playback With High-Resolution Phase Variation
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Solution Overview
Problem
Current techniques for generating precise phase variation in digital signals, such as jitter and wander, are limited by their reliance on analog methods and lack the resolution and flexibility needed for advanced digital signal processing applications.
Innovation Solution
The use of high-speed serializer and deserializer circuitry, combined with logic elements like XOR logic, to generate and detect phase variations in digital signals, allowing for precise control of bit stream modifications and timestamping with improved resolution beyond traditional clock rate limitations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If analog techniques (voltage controlled delay lines, oscillator frequency adjustment) are used to generate phase variation, then the ability to generate wander and jitter is provided, but the resolution is insufficient for advanced digital applications
Solution Approach 1:
The patent replaces analog mechanical/electrical systems (voltage controlled delay lines, oscillator frequency adjustment circuits) with a digital system using high-speed serializers, deserializers, and digital logic circuits. This substitution enables precise phase variation generation through digital bit manipulation while maintaining system functionality, thereby achieving higher resolution without the limitations of analog approaches.
Solution Approach 2:
The patent changes the fundamental operating parameters from analog voltage/frequency control to digital bit stream manipulation. By controlling phase variation through digital means (inserting/removing bits, changing bit patterns in the serialized stream), the system achieves finer resolution and better stability compared to analog parameter adjustment, directly addressing the resolution limitation of prior art.
2Adaptability or versatility
If high-speed serializer and deserializer circuitry is used to generate precise phase variation, then improved precision and flexibility are achieved, but device complexity increases
Solution Approach 1:
The patent creates a universal digital platform using high-speed serializer/deserializer circuits that can generate multiple types of phase variations (jitter, wander, and custom patterns) through software or configuration control. This multi-functional approach provides greater adaptability compared to dedicated analog circuits, allowing the same hardware to serve multiple testing and measurement purposes, thereby justifying the increased complexity through enhanced versatility.
Solution Approach 2:
The patent implements dynamic phase variation control where the phase characteristics can be changed in real-time by modifying the digital bit stream patterns. The system can dynamically adjust jitter amplitude, wander frequency, and other parameters through digital logic control, providing flexibility that static analog circuits cannot achieve, thus making the increased device complexity worthwhile.
Data Source
AI summary
Systems and methods are disclosed for playback of detected timing events with detected phase variations. Disclosed signal generation embodiments can be used to generate digital signals having desired phase variation. Disclosed event detection circuitry can be used to generate event timing data representing one or more phase variations in detected events. The disclosed signal generation embodiments can utilize the event timing data to playback detect events along with the measured phase variations. Further, the signal generation circuitry and the event detection circuitry can be implemented in different devices or can be implemented in the same device.