Delivering cacheable streaming media presentations
US8909806B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2009 |
| Grant date | Dec 9, 2014 |
| Priority date | — |
| Expiry date | Mar 16, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/6437
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A smooth streaming system provides a stateless protocol between a client and server in which the server embeds incremental control information in media fragments. The server provides uniform media fragment responses to media fragment requests that are cacheable by existing Internet cache infrastructure. The smooth streaming system receives media data in fragments from one or more encoders, creates an index of each fragment, and stores the fragments. The server provides fragments to clients that contain metadata information describing the encodings available on the server and the encoding of the fragment. The server may also provide information within each fragment that allows the client to determine whether the client is requesting data too fast or too slow, so that the client can adapt its request rate to a cadence in tune with the rate at which the server is receiving encoder data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.