Vector-based waveform acquisition and display
US5731984A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 17, 1995 |
| Grant date | Mar 24, 1998 |
| Priority date | — |
| Expiry date | Jul 17, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/31937
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Waveforms are acquired from a DUT into segments corresponding respectively to vectors of a vector pattern repetitively applied to the DUT. The waveform segments are displayed relative to vector numbers of the pattern to facilitate comparison of stimulus/response, debug, and other tasks. The relationship of the vector pattern is known relative to a trigger occurring once per repetition of the pattern, and vectors of the pattern are synchronous with a vector clock. The relationship of the time-domain waveform to the trigger is known. Taking account of these relationships and of system delays, each acquired waveform segment can be associated as it is acquired with a start-of-vector mark and with the corresponding vector number. Waveform displays are prepared which show the waveform segments corresponding to vector numbers of a user-selected range of vectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.