Multi-band coax extender for in-building digital...

Details Multi-band coax extender for in-building digital... Multi-band coax extender for in-building digital...

H - Electricity

04

L

H04L 27/10 (2006.01) H04N 7/10 (2006.01) H04Q 11/04 (2006.01) H04N 7/173 (2006.01)

Patent

CA 2433611

A method and system to expand digital transmission capacity in a "tree and branch" coax distribution system employing distributed TV signal amplifiers (650). Specifically, a number of separate bands are used in a main feeder cable (624) that are frequency shifted and applied to a number of local coax distribution networks. In the preferred embodiment each of the local coax distribution networks (762, 766, and 770) use the same pair of upstream and downstream frequencies (116 and 120). Using identical pairs of upstream and downstream frequencies allows the use of a single standardized non-tuning end- user data interface (client modem 408), that can be connected to any of the local coax distribution networks. This abstract is provided as a tool for those searching for patents, and not as a limitation on the scope of the claims.

L'invention concerne un procédé et un système pour augmenter la capacité de transmission numérique dans un système de distribution coaxial arborescent utilisant des amplificateurs de signal TV (650). Plus précisément, plusieurs bandes séparées sont utilisées dans un câble d'alimentation principal (624), bandes décalées en fréquence et appliquées à plusieurs réseaux de distribution coaxiale locaux. Dans le mode de réalisation préféré de l'invention, chaque réseau de distribution coaxial local (762, 766 et 770) utilise la même paire de fréquences d'amont et d'aval (116 et 120). L'utilisation de paires identiques de fréquences d'amont et d'aval permet l'utilisation d'une seule interface de données d'utilisateur final non syntonisante normalisée (modem client 408), pouvant être connectée à un réseau de distribution coaxial local, quel qu'il soit.

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