Distributed echo cancelling
US7085374B2 · kind B2 · utility
12Cited by
7References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 29, 2003 |
| Grant date | Aug 1, 2006 |
| Priority date | — |
| Expiry date | May 29, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M9/082
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A distributed echo cancelling architecture is provided where echo-cancelling functions are performed at locations remote from devices receiving signals with echoes. The echo cancelling functions use a reference signal, which has been corrupted with the echoes at the devices, for echo cancellation. As echo canceller resources are located at a central system and not at each individual device, the echo canceller resources can therefore be shared between the devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.