Process for the transmission and reception of conditional access programs controlled by the same operator
US5615265A · kind A · utility
62Cited by
3References
10Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | Dec 20, 1994 |
| Grant date | Mar 25, 1997 |
| Priority date | — |
| Expiry date | Dec 20, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/601
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Process for the transmission and reception of conditional access programs controlled by the same operator. According to the invention, specific check words (MCSi) are formed for various programs of the same operator from a root check word individual to said operator. The check words of the access titles include a part which is common to all the programs controlled by the same operator and a part which is specific to each program. Uses in television, radio, data transmission, messaging, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.