Method and apparatus for controlling user access and decryption of locally stored content at receivers in a digital broadcast system
US6834156B1 · kind B1 · utility
31Cited by
18References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2000 |
| Grant date | Dec 21, 2004 |
| Priority date | — |
| Expiry date | Jun 5, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H60/27
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates generally to a receiver unit in a digital broadcast system for receiving a broadcast signal comprising content segments and control data, and generating an output signal using the content segments and previously stored content segments at the receiver. The previously stored content segments are decrypted. The receiver is configured to obtain authorization from a remote distribution center to decrypt locally stored content segments requested by a user for recording onto a portable storage medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.