Digital wireless speaker system

H - Electricity – 04 – B

Patent

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Details

H04B 7/00 (2006.01) H04B 5/00 (2006.01) H04L 1/22 (2006.01) H04R 3/00 (2006.01)

Patent

CA 2244191

This invention discloses a digital wireless speaker system (20) for use in consumer audio applications. A digital radio frequency transmitter (22) is connected to an analog or digital audio source (26) and a digital radio frequency receiver (24) provides for reception of the transmitted audio information in remote locations. In addition, the digital receiver (24) will be able to receive control information to implement such things as volume, tone controls, or other auxiliary information. This allows the user to listen to high quality audio in a variety of locations without the need of independent stereos or external wires. The system is based on digital circuitry to improve the performance of the system and provide for compact disc quality sound. The digital circuitry (34 and 42) incorporates forward error correction techniques and interleaving to enable the system (20) to account for errors in transmission and thus improve the overall performance of the system.

L'invention concerne un système de haut-parleurs numériques sans fil (20) destiné à des applications audio grand public. Un émetteur numérique (22) à fréquence radioélectrique est relié à une source audio analogique ou numérique (26), et un récepteur numérique (24) à fréquence radioélectrique assure à distance la réception des informations audio transmises. Le récepteur numérique (24) est également capable de recevoir des informations de commande permettant de régler le volume et la tonalité, ou d'autres informations auxiliaires. Ceci permet à l'utilisateur d'écouter des programmes audio de haute qualité dans divers endroits, sans avoir besoin de commandes de balance stéréophoniques ou de câbles externes indépendants. Le système est basé sur un circuit numérique qui améliore les performances du système et donne un son ayant la qualité des disques compacts. Le circuit numérique (34, 42) fait appel à des techniques de correction d'erreur automatique et d'entrelacement qui permettent au système (20) de tenir compte des erreurs de transmission et donc améliorent ses performances générales.

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