Descrambling device for the use of several conditional access sub-systems
US6690797B1 · kind B1 · utility
2Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1999 |
| Grant date | Feb 10, 2004 |
| Priority date | — |
| Expiry date | Jul 28, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/43607
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The descrambling device comprises hardware resources (1) and first memory zones (CA1, CA2, . . . , CAn) to store at least two different access control codes for controlling the hardware resources. The device also contains an arbitration code for selecting one access control code to control the hardware resources in order to share access to the hardware resources from the access control codes. Access control codes can be downloaded in the first memory zones by means of a loader contained in the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.