Scalable watermark insertion for fragmented media stream delivery
US9330429B2 · kind B2 · utility
7Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2012 |
| Grant date | May 3, 2016 |
| Priority date | — |
| Expiry date | Sep 21, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/467
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A media stream is delineated into multiple fragments. Different watermark variants of individual fragments are generated. Particular sequences of watermark variants are selected for particular clients and maintained in a user access database. Analyzing media streams allows determination of the sequences of watermark variants and identification of particular clients intended to receive the media streams. Fragments can continue to be cached efficiently and unique watermarks need not be generated for each individual client.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.