Multi-rate IIR decimation and interpolation filters
US5732002A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 1995 |
| Grant date | Mar 24, 1998 |
| Priority date | — |
| Expiry date | May 23, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H19/004
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A digital filtering method that includes sampling an input signal at a first rate, integrating the signal, sampling the integrated version at a different rate, and combining the sampled integrated version with the input signal. The method can include again integrating the integrated version, sampling the twice integrated version at a third rate different from the first and second rates, and combining the twice integrated version with the integrated version and the input signal. The integrated version can be again integrated, the twice integrated version can be sampled at a third rate different from the first and second rates, and the twice integrated version can be combined with the integrated version. A common circuit component can be multiplexed to participate in two integrating steps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.