Process for the broadcasting of programmes with progressive conditional access and separation of the information flow and the corresponding receiver
US5742681A · kind A · utility
67Cited by
2References
20Claims
0Family size
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Key dates
| Filing date | Apr 4, 1995 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | Apr 4, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/1675
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Process for the broadcasting of programmes with progressive conditional access and separation of the information flow, as well as the corresponding receiver, In order to form the elementary flow, groups of m successive elements of the multiplex are taken and for forming the complimentary flow groups of p successive elements of the multiplex are taken. Application to television with entitlement checking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.