Methods for automatic trigger threshold adjustment
US8676540B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2007 |
| Grant date | Mar 18, 2014 |
| Priority date | — |
| Expiry date | Feb 19, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/2506
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods are presented for adjusting trigger threshold values to compensate for drift in the quiescent level of a signal monitored for initiating a data recording event, thereby avoiding false triggering conditions. Initial threshold values are periodically adjusted by re-measuring the quiescent signal level, and adjusting the threshold values by an offset computation based upon the measured quiescent signal level drift. Re-computation of the trigger threshold values can be implemented on time based or counter based criteria. Additionally, a qualification width counter can be utilized to implement a requirement that a trigger threshold criterion be met a given number of times prior to initiating a data recording event, further reducing the possibility of a false triggering situation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.