Video conferencing systems
US9088695B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2013 |
| Grant date | Jul 21, 2015 |
| Priority date | — |
| Expiry date | Jan 22, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2201/50
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
We describe a method of synchronizing a teleconference comprising audio carried on a telephone network and a digital data stream carried on a computer network. Audio at a first node is characterized to determine audio characterizing data. A digital data stream for the teleconference is also input at the first node and the audio characterizing data is inserted into the digital data stream and forwarded over the network. The audio and digital data streams are received separately at a second node of the system, and the audio characterizing data is extracted from the digital data stream and processed in conjunction with the received audio to determine a first-second node time offset. The audio and digital data streams are then synchronizing by adjusting, for example, a relative time delay of the received audio and digital streams at the second node responsive to the determined time offset.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.