Phase control of a synchronization signal in a packet switching network
US8170012B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2008 |
| Grant date | May 1, 2012 |
| Priority date | — |
| Expiry date | Aug 25, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/242
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device is operative to send packets in a packet communication network having at least two stations. According to an exemplary embodiment, the device operates by: extracting image pips on the basis of a synchronization signal; initializing a first counter on the basis of the the image pips; initializing a second counter according to zero-crossings of the first counter; sampling the second counter every period Tsmp, where Tsmp emanates from a time base synchronized on all the stations of the network; sending packets containing the samples of the second counter in the network; receiving at least one phase deviation value Δφ to be applied; and sending the at least one phase deviation value Δφ in the network. The present invention also pertains to a device operative to receive packets in a packet communication network having at least two stations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.