Sequential timebase
US7280930B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 3, 2006 |
| Grant date | Oct 9, 2007 |
| Priority date | — |
| Expiry date | Feb 3, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R35/002
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for correcting for deterministic jitter in a sequential sampling timebase. The value of a fine analog delay is held at a substantially constant nominal rate during a duration of a counting of a digital clock. A time difference between a trigger at which a fine analog delay starts measuring time and the occurrence of a digital pulse of a stable clock used to count a coarse delay is measured. An input waveform is sampled at a sample time having a nominal delay time. After sampling, a desired compensation time is provided for the sample of the input waveform in accordance with combinations of three independent variables defining a calibration table. The waveform is reconstructed by shifting a delay time of a sampled value of the input waveform from its nominal delay time in accordance with a value defined by the calibration table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.