Method for controlling and implementing blackout in IPTV networks
US8904425B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 2013 |
| Grant date | Dec 2, 2014 |
| Priority date | — |
| Expiry date | Apr 25, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8456
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A media content broadcast blackout control method, comprising receiving a retune message requesting a blackout of a primary media content broadcast in specific regions, generating a playlist for each region comprising a content key wrapped in a region-specific media key, wherein the content key in the playlists for regions that are not subject to the blackout is configured to access the primary media content broadcast, and the content key in the playlists for regions that are subject to the blackout is configured to access an alternate media content broadcast, providing the playlists to client devices within each region, providing the primary media content broadcast to client devices whose region-specific media key unwraps the content key for the primary media content broadcast, and providing the alternate media content broadcast to client devices whose region-specific media key unwraps the content key for the alternate primary media content broadcast.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.