Gain control enhancement for modulated communications
US8891743B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2011 |
| Grant date | Nov 18, 2014 |
| Priority date | — |
| Expiry date | Sep 12, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0093
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In one implementation, a method for implementing gain control enhancement for modulated communications includes establishing a communication session between a first endpoint and a second endpoint. The communication session involves forwarding a call signal using an initial gain level until a state transition is detected in the communication session at a digital signal processor. The detection may occur in a transmitting gateway associated with the first endpoint or a receiving gateway associated with the second endpoint. The state transition indicates modulated communications, which may include fax, modem, or text telephony. For example, communication session may be fax over IP (FoIP). The call signal is forwarded using an adjusted gain level based on the state transition. The adjusted gain level may be selected to avoid clipping in the call signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.