System for measuring timing relationship between two signals

Abstract

A system for measuring timing relationship between two signals for accurately measuring a timing relationship between signals includes an electro-optic measuring unit and a waveform storage and processing unit. The electro-optic measuring unit samples electrical signals from a device under measurement via a strobe light so as to measure the signal waveform. The electro-optic unit uses a laser diode as a light source. The waveform storage and processing unit stores the electrical signal waveforms measured by the electro-optic measuring unit in digital form. The waveform storage and processing unit also calculates a correlation between two stored electrical signal waveforms via a correlation calculation unit, and also detects a peak of the correlation to detect a timing relationship between the signals.

Dependencies are inferred from the claim text.