Multi-Strobe Receiving Apparatus for Automatic Phase Adjustment
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Solution Overview
Problem
Existing test apparatuses face difficulties in automatically adjusting the multi-strobe timing for testing devices that output data and clock signals in parallel, making it challenging to accurately assess the phase relationship between these signals.
Innovation Solution
A receiving apparatus is developed with a multi-strobe generating section, an acquiring section, a detecting section, and a selecting section that generates multiple strobes with different phases, detects change positions in the reception signal, and selects the reception data value using a strobe shifted by a predetermined phase from the change position, allowing for automatic adjustment and accurate data acquisition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If manual adjustment of multi-strobe timing is used, then testing can be performed, but automation is difficult and testing efficiency is reduced
Solution Approach 1:
The receiving apparatus automatically detects change positions in the reception signal and autonomously determines the optimal strobe timing without requiring manual intervention. The system self-adjusts by detecting signal transitions and calculating appropriate strobe positions, enabling automated testing while maintaining high efficiency
Solution Approach 2:
The system uses feedback from the detected change positions in the reception signal to automatically adjust multi-strobe timing. By monitoring the actual signal transitions and comparing them against expected patterns, the system continuously optimizes strobe timing automatically, resolving the contradiction between automation and testing efficiency
2Measurement precision
If multi-strobe timing is not accurately adjusted, then testing can proceed, but measurement precision of phase relationship is insufficient
Solution Approach 1:
The patent replaces complex mechanical synchronization circuits with a software-based detection and calculation approach. The receiving apparatus uses digital signal processing to detect change positions and calculate optimal strobe timing, achieving high measurement precision without requiring complex hardware synchronization circuits
Solution Approach 2:
The system introduces an intermediary detection mechanism that identifies change positions in the reception signal as a reference point for strobe timing. This intermediary approach simplifies the overall system by using signal transitions as a natural reference, eliminating the need for complex dedicated synchronization circuits while maintaining high measurement precision
Data Source
AI summary
Provided is a receiving method and a receiving apparatus comprising a multi-strobe generating section that generates a multi-strobe including a plurality of strobes having different phases with respect to a reception signal; an acquiring section that acquires the reception signal using each of the strobes; a detecting section that detects a change position at which a value of the reception signal changes, based on the acquisition result of the acquiring section; and a selecting section that selects, as a reception data value, the value of the reception signal acquired using a strobe at a position shifted by a predetermined phase from the change position. The receiving apparatus may further comprise a reference clock generating section that generates a reference clock having a preset period, and the multi-strobe generating section generates the multi-strobe for each pulse of the reference clock.