Method and apparatus for generating a metering pulse
US7991133B2 · kind B2 · utility
17Cited by
8References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2005 |
| Grant date | Aug 2, 2011 |
| Priority date | — |
| Expiry date | Mar 23, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M15/00
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In one embodiment, a subscriber line interface circuit includes circuitry to generate metering pulses for insertion onto a subscriber line. The circuitry includes an audio path and a pulse metering path, where the pulse metering path includes a metering generator to generate a digital sine wave from a plurality of stored values, a first interpolator to interpolate the digital sine wave, a filter to filter the interpolated digital sine wave, and a second interpolator to interpolate the filtered interpolated digital sine wave.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.