Digital-to-analog converter device for processing PCM signals of different sampling frequencies
US4614934A · kind A · utility
10Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1984 |
| Grant date | Sep 30, 1986 |
| Priority date | — |
| Expiry date | Feb 10, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/0631
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A digital-to-analog converter device for PCM signals at different sampling frequencies comprises a signal converter which expands the frequency distance between a PCM signal band and a side band by converting the sampling frequencies associated with the PCM signals to be reproduced into higher frequencies. With this signal converter, a single low-pass filter can be simplified, having a gradual ramp cut-off characteristic for removal of the side band wherein a pass band cut-off frequency and a stop band cut-off frequency can be adapted for low pass filtering of the PCM signals at different sampling frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.