Methods and systems combining push and pull protocols
US7822855B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2009 |
| Grant date | Oct 26, 2010 |
| Priority date | — |
| Expiry date | Oct 14, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/1097
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Combining push and pull protocols, including the steps of pushing approximately a minimal decodable set of erasure-coded fragments to an assembling device, determining the fragment loss at the assembling device, and pulling additional erasure-coded fragments, using a fragment pull protocol, to compensate for the fragment loss. Optionally, the system includes a CDN streaming server and a fractional-storage CDN server, both storing unique erasure-coded fragments associated with segments of streaming content. The CDN streaming server pushes streams of fragments to a plurality of assembling devices, and the fractional-storage CDN server provides fragments associated with recently pushed segments in response to fragment pull protocol requests by the assembling devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.