Apparatus and method for compensating the drift of a local clock used as sampling frequency
US7548600B2 · kind B2 · utility
13Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2005 |
| Grant date | Jun 16, 2009 |
| Priority date | — |
| Expiry date | Sep 19, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to an apparatus and a method for data acquisition, the apparatus being characterized in that it comprises an analog/digital converter (510) sampling at an imperfect frequency FE provided by a local clock (100) data acquired by a sensor (500) thus providing a series of sampled and dated data E[k], a time-stamping module (300) for measuring the frequency error of the local clock (100) by determining the sampling dates according to a universal time UTC(t), and a resampling module (400) for correcting the sampled and dated data E[k].
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.