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Machine translation
1. (WO1980001635) INFORMATION TRANSMISSION SYSTEM BETWEEN A TRANSMISSION CENTER AND RECEIVERS,THIS SYSTEM BEING PROVIDED WITH A CONTROL MEANS FOR ACCESS TO THE TRANSMITTED INFORMATION
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/001635    International Application No.:    PCT/FR1980/000018
Publication Date: 07.08.1980 International Filing Date: 05.02.1980
IPC:
G08C 19/28 (2006.01), H04N 7/03 (2006.01), H04N 7/025 (2006.01), H04N 7/035 (2006.01), H04N 7/08 (2006.01), H04N 7/081 (2006.01), H04N 7/167 (2011.01)
Applicants:
Inventors:
Priority Data:
7902995 06.02.1979 FR
Title (EN) INFORMATION TRANSMISSION SYSTEM BETWEEN A TRANSMISSION CENTER AND RECEIVERS,THIS SYSTEM BEING PROVIDED WITH A CONTROL MEANS FOR ACCESS TO THE TRANSMITTED INFORMATION
(FR) SYSTEME DE TRANSMISSION D"INFORMATION ENTRE UN CENTRE D"EMISSION ET DES POSTES RECEPTEURS, CE SYSTEME ETANT MUNI D"UN MOYEN DE CONTROLE DE L"ACCES A L"INFORMATION TRANSMISE
Abstract: front page image
(EN)Information transmission system provided with a control means for access to the information. This system comprises a transmission center (2) and receivers (4, 4"...). The transmission center comprises a signal formation circuit (6), a generator (22), a service key, a locking automaton (24) and a message formation circuit (102). Data and messages are transmitted by a circuit (12). Each receiver comprises a receiving element (14), a subscription support (108), a service key restitution circuit (110), an unlocking automaton (38) and an information visualisation device (20). Application to the videotex system ANTIOPE and TITAN or to the EPEOS system.
(FR)Systeme de transmission d"information muni d"un moyen de controle de l"acces a l"information. Ce systeme comprend un centre d"emission (2) et des recepteurs (4, 4"...). Le centre d"emission comprend un circuit (6) de formation de signaux, un generateur (22), une cle de service, un automate de verrouillage (24) et un circuit (102) de formation de messages. Donnees et messages sont transmis par un circuit (12). Chaque recepteur comprend un organe de reception (14), un support d"abonnement (108), un circuit (110) de restitution de la cle de service, un automate de deverrouillage (38) et enfin un organe (20) de visualisation des informations. Application aux systemes de videotex ANTIOPE et TITAN ou au systeme EPEOS.
Designated States:
Publication Language: French (FR)
Filing Language: French (FR)