One-pass trigger jitter reduction for digital instruments
US9874587B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 11, 2016 |
| Grant date | Jan 23, 2018 |
| Priority date | — |
| Expiry date | Jul 22, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R13/0254
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and method: receive an input signal and output digital samples representing the input signal; store the digital samples for at least one acquisition record of the input signal in an acquisition memory; detect a trigger event in the input signal and calculate a trigger address in the acquisition memory for a digital sample corresponding to the detected trigger event; perform digital signal processing on the digital samples of the acquisition memory to produce processed digital samples; detect an edge, representing a trigger, in the processed digital samples, and determine a measured trigger time; temporarily store the processed digital samples in a buffer memory at least until the edge detector detects the edge in the processed digital samples; determine a trigger correction value in response to the measured trigger time; determine a corrected beginning address of the buffer memory from the calculated trigger address and the trigger correction value; and read the processed digital data out from the buffer memory beginning at the corrected beginning address.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.