Multi-branch down converting fractional rate change filter
US9030337B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2013 |
| Grant date | May 12, 2015 |
| Priority date | — |
| Expiry date | Oct 7, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2220/06
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method of filtering an input sample stream having a downsampling rate is disclosed to generate an output sample stream having an upsampling rate that is less than the downsampling rate. The input sample stream is input to a rate change filter having multiple filter branches. The input sample stream is filtered at each of the multiple filter branches to output filtered sample substreams. Each of the multiple filter branches have filter coefficients corresponding to a different phase of the filter response. The filtered sample substreams are stored in a memory and the stored filtered sample substreams are combined to generate the output sample stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.