Pseudo-random repetitive sampling of a signal

Details Pseudo-random repetitive sampling of a signal Pseudo-random repetitive sampling of a signal

1993-02-22

1994-05-24

Wambach, Margaret Rose

Electrical pulse counters, pulse dividers, or shift registers: c

Applications

Measuring or testing

341122, 341123, 3281291, 328 63, 328 73, 328 75, H03K 1726, G01R 2902

Patent

active

053156277

ABSTRACT:
A pseudo-random repetitive sampling circuit which is capable of sampling fast signals, sampling negative and positive time around a trigger event, and rapidly building the waveform for display. The circuit accomplishes this by acquiring negative and positive time in two different ways. Positive time information is acquired using a modified form of sequential sampling, since sequential sampling can rapidly build the signal for samples that occur after the trigger event. The system also may take multiple samples for each trigger event. For samples occurring prior to the trigger event, the system uses a modified form of random repetitive sampling. The modification comprises sampling of the waveform prior to allowing any trigger events to occur, and qualifying each trigger event so that a trigger event is only recognized when it occurs in a programmable time window after a sample.

REFERENCES:
patent: 4870664 (1989-09-01), Hayashi
patent: 5237325 (1993-08-01), Klein et al.
patent: 5245647 (1993-09-01), Grouffal et al.

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