Method and apparatus for encrypting media programs for later purchase and viewing
US8677152B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2008 |
| Grant date | Mar 18, 2014 |
| Priority date | — |
| Expiry date | Jul 14, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2107
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method for storing and retrieving program material for subsequent replay is disclosed. The method includes accepting a receiver ID associated with a receiver key stored in a memory of the receiver, determining a pairing key for encrypting communications between the conditional access module and the receiver, encrypting the pairing key with the receiver key, and transmitting a message comprising the encrypted pairing key to the receiver. The apparatus comprises a receiver for receiving a data stream transmitting a media program encrypted according to a media encryption key and an encrypted media encryption key and a conditional access module, communicatively coupleable with the receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.