Data acquisition system with multiple simultaneous sample rates obtained from a single analog-to-digital converter
US5157394A · kind A · utility
3Cited by
4References
3Claims
0Family size
Inventor
Key dates
| Filing date | Nov 25, 1988 |
| Grant date | Oct 20, 1992 |
| Priority date | — |
| Expiry date | Nov 25, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/14
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A data acquisition system which utilizes a fixed frequency anti-aliasing filter and an analog-to-digital converter which operates at a fixed sample rate and a Fourier transform generator and a transform truncator and an inverse transform generator so as to provide sample data output at rates lower than the analog-to-digital converter sampling rate. By using multiple transform truncators and multiple inverse transform generators which simultaneously operate, multiple sample data outputs can be obtained which are free of aliasing phenomena.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.