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1. (WO1997018656) SYSTEM FOR DECRYPTING TELEVISION FROM SEVERAL SATELLITES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/018656 International Application No.: PCT/US1996/017936
Publication Date: 22.05.1997 International Filing Date: 13.11.1996
Chapter 2 Demand Filed: 13.06.1997
IPC:
H04B 7/15 (2006.01) ,H04H 20/00 (2008.01) ,H04N 7/16 (2011.01) ,H04N 7/20 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
7
Radio transmission systems, i.e. using radiation field
14
Relay systems
15
Active relay systems
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
H
BROADCAST COMMUNICATION
20
Arrangements for broadcast or for distribution combined with broadcast
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
7
Television systems
16
Analogue secrecy systems; Analogue subscription systems
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
7
Television systems
20
Adaptations for transmission via a GHz frequency band, e.g. via satellite
Applicants:
E*STAR, INC. [US/US]; 140 Victory Lane Los Gatos, CA 95030, US
Inventors:
WILSON, Jerrell; US
Agent:
RHOA, Joseph, A.; Myers, Liniak & Berenato Suite 240 6550 Rock Spring Drive Bethesda, MD 20817, US
Priority Data:
08/556,51113.11.1995US
Title (EN) SYSTEM FOR DECRYPTING TELEVISION FROM SEVERAL SATELLITES
(FR) SYSTEME DE DECRYPTAGE DE SIGNAUX DE TELEVISION PROVENANT DE PLUSIEURS SATELLITES
Abstract:
(EN) A system and corresponding method are provided for selecting one of a plurality of simultaneously received encrypted direct broadcast satellite (DBS) signals for decryption annd viewing. A converter box or decrypting device (7) is provided with a plurality of different decrypting smart cards (41) all of which are simultaneously inserted in the converter box (43). The user or viewer scans the received signals and selects one for viewing. The different decrypting algorithms of the different smart cards (41) respectively correspond to the different encryptions of the received DBS signals so that the selected encrypted signal is decrypted by the appropriate and corresponding decrypting smart card (41) and subsequently decompressed and viewed.
(FR) Système et procédé correspondant permettant de sélectionner l'un des signaux d'une pluralité de signaux émis par des satellites de télédiffusion directe (DBS), reçus et codés simultanément en vue de les décrypter et les visualiser. Une boîte de conversion ou dispositif de décryptage (7) est équipée d'une pluralité de cartes à puces (41) de décryptage différentes, toutes étant simultanément introduites dans la boîte de conversion (43). L'utilisateur ou spectateur analyse les signaux reçus et en sélectionne un pour le regarder. Les différents algorithmes de décryptage des différentes cartes à puces (41) correspondent respectivement à différents codes des signaux DBS reçus de sorte que le signal codé sélectionné soit décrypté par la carte à puce (41) de décryptage appropriée et correspondante, et soit ensuite décompressé et visualisé.
Designated States: AL, AU, BB, BG, BR, CA, CN, CZ, EE, GE, HU, IL, IS, JP, KP, KR, LK, LR, LT, LV, MG, MK, MN, MX, NO, NZ, PL, RO, SG, SI, SK, TR, TT, UA, UZ, VN
African Regional Intellectual Property Organization (ARIPO) (KE, LS, MW, SD, SZ, UG)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
SG53620EP0861542JP2000503821 CA2237304NZ325532AU1997014059