Method and apparatus for controlling paired operation of a conditional access module and an integrated receiver and decoder
US7797552B2 · kind B2 · utility
29Cited by
154References
40Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Sep 20, 2002 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | May 12, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/6187
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus that selectively pairs a receiver (132) configured to receive a media program encrypted according to a media encryption key and a conditional access module. In one embodiment, the apparatus comprises a security module (508) for receiving and modifying the media encryption key, and a transport module (412), comprising a decryptor (524) for decrypting the media program. The media encryption key has a portion indicating a first state in which the media program is to be viewable by a set of receivers or a second state in which the media program is to be viewable only by a subset of the set of receivers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.