Method of reconstructing an analog signal, particularly in digital telephony applications, and a circuit device implementing the method
US5014304A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 1990 |
| Grant date | May 7, 1991 |
| Priority date | — |
| Expiry date | Jan 24, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B14/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method of reconstructing an analog signal, particularly for digital telephony, comprises a first step of digital-to-analog conversion, wherein a first reconstruction of the analog signal is provided by introducing a distortion component into the frequency spectrum whose amplitude decreases with the signal frequency, and a second step of filtering carried out by means of a reconstruction filter provided with integrators and having a cut-off frequency F.sub.t. That attenuating distortion component is utilized instead of one of the integrators in the reconstruction filter, to afford a reduction of the overall design of the circuit device operating in accordance with this method, and bring about, as a result, decreased occupation of the integrated circuit and power dissipation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.