Triggering for waveform recording
US4755887A · kind A · utility
4Cited by
3References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1986 |
| Grant date | Jul 5, 1988 |
| Priority date | — |
| Expiry date | Oct 31, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/18
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A drop out trigger captures waveform data when a normally continuous input signal is disrupted or interrupted. In the preferred embodiment, a conventional trigger detects a parameter periodically satisfied by the continuous signal and resets a timer whenever a trigger event occurs. The alarm count of the timer is set for an interval slightly larger than the periodic interval. If the timer reaches the alarm count, a measurement signal is generated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.