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Machine translation
1. (WO1980001636) VIDEOTEX SYSTEM PROVIDED WITH INFORMATION ACCESS CONTROL MEANS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/001636    International Application No.:    PCT/FR1980/000019
Publication Date: 07.08.1980 International Filing Date: 05.02.1980
IPC:
H04N 7/025 (2006.01), H04N 7/03 (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:
7902994 06.02.1979 FR
Title (EN) VIDEOTEX SYSTEM PROVIDED WITH INFORMATION ACCESS CONTROL MEANS
(FR) SYSTEME DE VIDEOTEX MUNI DE MOYENS DE CONTROLE D"ACCES A L"INFORMATION
Abstract: front page image
(EN)The system comprises a transmission center (2) and receivers (4). The transmission center comprises a magazine composition source (6), a locking automaton (24), a service key generator (22), a transmission circuit (12). A subscriber center (100) provides subscription keys which are transformed into messages by a circuit (102). The group of messages composes a special page for control of access. In the receiver the service key is returned by a circuit (36) by means of the messages received and by means of a subscription key inscribed into a support (106) and the unlocking of the information is effected in a circuit (38). The subscription supports are loaded in a set (112). Application to the ANTIOPE and TITAN systems.
(FR)Le systeme de l"invention comprend un centre d"emission (2) et des postes recepteurs (4). Le centre d"emission comprend une source de composition d"un magazine (6), un automate de verrouillage (24), un generateur de cle de service (22), un circuit d"emission (12). Un centre d"abonnements (100) fournit des cles d"abonnement qu"un circuit (102) transforme en messages. L"ensemble des messages compose une page speciale de controle d"acces. Dans le poste recepteur la cle de service est restituee par un circuit (36) a l"aide des messages recus et d"une cle d"abonnement inscrite dans un support (106) et le deverrouillage des informations est effectue dans un circuit (38). Les supports d"abonnement se chargent dans un poste (112). Application aux systemes ANTIOPE et TITAN.
Designated States:
Publication Language: French (FR)
Filing Language: French (FR)