A system and method for distributing information via a...

H - Electricity – 04 – N

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H04N 7/16 (2006.01) H04J 14/02 (2006.01) H04L 12/16 (2006.01) H04L 12/18 (2006.01) H04L 12/28 (2006.01) H04L 12/56 (2006.01) H04N 7/22 (2006.01) H04N 7/24 (2006.01) H04H 1/00 (2006.01)

Patent

CA 2401079

A communication system (100) for distributing information via an HFC network to subscriber destinations (109) including a multi-port switch (119), one or more radio frequency (RF) modems (121) coupled to restrictive ports of the switch, a combiner (125) and a transmitter (127). The switch forwards source information to the RF modems based on address information. Each RF modem modulates and up converts information from the switch to an RF signal within a respective subscriber channel of the television broadcast spectrum. Each channel is assigned to one or more subscribers, and is subscriber is allocated unshared bandwidth. The HFC network includes a distribution point (103), one or more optical nodes (105) and corresponding coaxial cables (137). Each subscriber destination includes a gateway device (139) that is tuned to a corresponding channel to retrieve source information from that channel, and to deliver the information to one or more local subscriber devices.

L'invention concerne un système de communication (100) conçu pour distribuer des informations, par l'intermédiaire d'un réseau hybride fibre et coaxial HFC, à des abonnés destinataires (109). Ledit système (100) comporte un commutateur (119) à ports multiples, un ou plusieurs modems à radiofréquence (RF) couplés aux ports respectifs du commutateur, un coupleur d'émission (125) et un émetteur (127). Le commutateur retransmet des informations sources aux modems RF, en fonction des informations relatives aux adresses. Chaque modem RF module et transpose par montée en fréquence les informations provenant du commutateur et les transforme en un signal RF dans une voie d'abonné respective du spectre de diffusion télévisuelle. Chaque voie est attribuée à un ou plusieurs abonnés, et à chaque abonné est attribuée une largeur de bande non partagée. Le réseau HFC comprend un point de distribution (103), un ou plusieurs noeuds optiques (105) et les câbles coaxiaux correspondants (137). Chaque destination d'abonné comprend un dispositif à passerelle (139) qui est accordé sur une voie correspondante, pour l'extraction d'informations sources de ladite voie, et pour la fourniture desdites informations à un ou plusieurs dispositifs d'abonné locaux.

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