Method of reading a service card

Details Method of reading a service card Method of reading a service card

1997-05-22

2000-09-19

Hays, Gail O.

Cryptography

Key management

Having particular key generator

380 4, 348460, H04N 7167

Patent

active

061223743

ABSTRACT:
In a video-communication receiver provided with a deciphering module (13) used for the descrambling of scrambled transmissions, using a memory card (17) for providing information required for descrambling, service information is introduced into the receiver, for example, by replacing the memory card by a service card containing the information in a ciphered form. The receiver is provided with apparatus (29, 12, 31) for deciphering ciphered service information by means of its own deciphering module (13).

REFERENCES:
patent: 5414773 (1995-05-01), Handelman
patent: 5774546 (1998-06-01), Handelman et al.
patent: 5805230 (1998-09-01), Staron

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