Process for the broadcasting of programmes with progressive cond

Details Process for the broadcasting of programmes with progressive cond Process for the broadcasting of programmes with progressive cond

1995-04-04

1998-04-21

Cain, David C.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 5, 380 49, 380 10, H04N 7167

Patent

active

057426813

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.

REFERENCES:
patent: 5349641 (1994-09-01), Coutrot et al.
patent: 5517502 (1996-05-01), Bestler et al.
18th International Television Symposium and Technical Exhibition, Jun. 15, 1993, Montreux, Switzerland, pp. 761-769, may 10, 1993, Jean-Pierre Vigarie, "A Device for Real-Time Modification of Access Conditions in a D2-MAC/Packet Eurocrypt Signal: The Transcontroller".
IEEE Transactions on Consumer Electronics, vol. 38, No. 3, Aug. 1992, pp. 188-194, Didier Angebaud, et al., "Conditional Acess Mechanisms for All-Digital Broadcast Signals".

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