Method for converting a digital signal into another digital signal having a different sampling frequency
US5126737A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 15, 1991 |
| Grant date | Jun 30, 1992 |
| Priority date | — |
| Expiry date | Apr 15, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H17/0657
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A conversion method converts a first digital signal having a first sampling period to a second digital signal having a second sampling period which is different from the first sampling period. The method comprises four steps. In the first step, the first digital signal is oversampled. In the next step, the sample value of the oversampled signal maintains an identical value during a short period corresponding to a common multiple of the first sampling period and the second sampling period. In the third step, an interpolation process is carried out. Finally, the second digital signal is outputted by sampling at the second sampling period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.