Use of media storage structure with multiple pieces of content in a content-distribution system
US8306918B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2005 |
| Grant date | Nov 6, 2012 |
| Priority date | — |
| Expiry date | Oct 11, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06Q2220/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Some embodiments of the invention provide a method for distributing content over a network. The method distributes a single media storage structure to a device (e.g., a computer, portable player, etc.) that connects to the network. The media storage structure includes first and second pieces of encrypted content. Based on whether the device is allowed to access the first piece of content, the second piece of content, or both, the method provides the device with a set of keys for decrypting the pieces of the content that the device is able to access. The provided set of keys might include one or more keys for decrypting only one of the two encrypted pieces of content. Alternatively, it might include one or more keys for decrypting both encrypted pieces of content. For instance, the selected set of keys might include a first key for decrypting the first encrypted piece and a second key for decrypting the second encrypted piece. Based on the provided set of keys, the device can then decrypt and access either one of the two pieces of content in the media storage structure or both pieces of encrypted content in the media storage structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.