Fast channel change with conditional return to multicasting
US7904581B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2006 |
| Grant date | Mar 8, 2011 |
| Priority date | — |
| Expiry date | Oct 4, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/1863
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a digital video network that is capable of distributing digital video content to a client via multicasting and unicasting, servicing a channel change request from a client involves switching from providing the digital video content to the client via multicasting to providing the digital video content to the client via unicasting and continuing to provide digital video content to the client via unicasting until a pre-established condition is met. Continuing to provide digital video content to the client via unicasting until a pre-established condition is met allows the network to opportunistically switch the client from unicasting back to multicasting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.