LFPS Pulse Detection Using Average Pulse Width UI Adjustment
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Solution Overview
Problem
Existing design verification systems face challenges in accurately detecting Low-Frequency Periodic Signaling (LFPS) pulses due to pulse-to-pulse variations, leading to system instability and verification errors when verifying circuit designs that utilize LFPS, such as DisplayPort specifications.
Innovation Solution
The method involves detecting LFPS pulses using unit interval (UI) adjustment based on the average pulse width of detected LFPS pulses, allowing for reliable detection and reporting of out-of-range cycles, thereby simplifying the debugging process and reducing verification errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If fixed unit interval is used for LFPS pulse detection, then detection simplicity is maintained, but detection accuracy deteriorates due to pulse-to-pulse variations
Solution Approach 1:
The patent applies dynamics by making the unit interval adjustable rather than fixed. The detection system dynamically adapts the UI value based on detected pulse widths, allowing it to respond to variations in LFPS pulse characteristics while maintaining reliable detection across different operating conditions
Solution Approach 2:
The patent implements feedback by using the detected LFPS pulse width information to adjust the unit interval for subsequent detections. The system continuously monitors pulse characteristics and modifies its detection parameters accordingly, creating a closed-loop detection mechanism that improves accuracy while managing complexity
2Stability of the object's composition
If unit interval adjustment based on average pulse width is implemented, then detection stability is improved, but system complexity increases
Solution Approach 1:
The patent applies preliminary action by calculating and storing the average pulse width before using it to adjust the unit interval. This preparatory step establishes a stable reference value that can be used for multiple subsequent detections, reducing the need for frequent recalculations and improving overall system stability
Solution Approach 2:
The patent implements parameter changes by modifying the unit interval parameter based on the average pulse width measurement. This adaptive parameter adjustment allows the detection system to maintain stability across varying LFPS conditions while using a systematic approach to managing complexity through parameter optimization
Data Source
AI summary
Various embodiments provide for verifying operation of a circuit design with respect to a data communication specification, such as a DisplayPort specification, with Low-Frequency Periodic Signaling (LFPS) pulse detection using unit interval adjustment based on an average pulse width of detected LFPS pulses.