Dual-rate single band communication system
US7606330B2 · kind B2 · utility
0Cited by
5References
57Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2002 |
| Grant date | Oct 20, 2009 |
| Priority date | — |
| Expiry date | Jun 4, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q1/457
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system, method, and apparatus for a multiple data rate communication system is presented herein. The communication system receives data samples that are either sampled at a narrowband rate or a wideband rate and provides various functions and services, such as echo cancellation, DTMF detection and generation, and call discrimination. For wideband signals, a down-sampled signal is provided for each of the foregoing function and service. The output of the function or services is then recombined with the wideband signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.