Precision resampling system
US6778621B1 · kind B1 · utility
7Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2000 |
| Grant date | Aug 17, 2004 |
| Priority date | — |
| Expiry date | Oct 23, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0029
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system for changing the sample rate of a digital signal precisely such that frequency coherence is maintained. The system uses coupled direct digital synthesizers to establish the phase of a resampled clock compared to the original clock. The system implements precision resampling that changes the sample rate of a sampled data signal, while maintaining the frequency coherence of the sampled signal. A precision phase calculation for the relation between an input clock and an output clock enables the precision resampling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.