Conditional access and content security method
US6069647A · kind A · utility
192Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1998 |
| Grant date | May 30, 2000 |
| Priority date | — |
| Expiry date | Jan 29, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8193
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system featuring an interface unit connected to a programmable unit is described. The interface unit is capable of containing a time-sensitive key. The programmable unit is allowed to receive digital content from the interface unit upon establishing that the time-sensitive key is also contained therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.