Method for playing digital contents protected with a DRM (digital right management) scheme and corresponding system
US8813246B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2013 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | Jan 31, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/6218
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for playing DRM-protected contents, the protected contents being downloaded by a user device from a media server in the form of protected segments, comprises executing a DRM proxy inside the user device, the DRM proxy interfacing the media server and a player configured to implement the HLS protocol; executing an HLS server in the DRM proxy; registering the DRM proxy to handle HTTP requests; producing by the DRM proxy a playlist in HLS format including a list of URLs locating the individual protected segments on the user device; processing the playlist in the player; in the DRM proxy, acquiring a license to access the protected segment identified by the URL of a current request; decrypting the protected segment in the DRM proxy based on the license; and returning a segment based on the decrypted segment to the player in response to the current URL request.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.