System and method for communication channel and device control via an existing audio channel
US7821918B2 · kind B2 · utility
2Cited by
78References
41Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2003 |
| Grant date | Oct 26, 2010 |
| Priority date | — |
| Expiry date | Dec 24, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/568
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system and method for communication channel and device control via an existing audio channel. A combined communication signal is received from a communication device comprising an audio signal and a modulated carrier signal via an audio channel. The audio signal is separated from the carrier signal. Digital data is extracted from the carrier signal. Device control is performed utilizing the extracted digital data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.