Method and apparatus for recursive audio storage in a...

H - Electricity – 04 – W

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H04W 4/00 (2009.01) H04W 4/12 (2009.01) H04W 8/00 (2009.01) G10L 19/00 (2006.01) H04B 7/26 (2006.01) H04L 1/00 (2006.01) H04M 3/53 (2006.01)

Patent

CA 2545250

A communication system (50) can include a first portable communication unit (72) operating in a dispatch mode with at least a second portable communication unit (78) and an infrastructure system (50A and 50B) providing a communication link between the first and second portable communication units. The infrastructure system can include a memory (61,63) for recursively storing a most recent audio stream from at least one among the first or second portable communication unit. The infrastructure system can further include a dispatch application processor (62). The communication system can further include a means for retrieving a most recent dispatch signal stored at the infrastructure system upon determining a received signal quality level below a predetermined threshold at the second portable communication unit or upon a user request of at least one the portable communication units.

La présente invention se rapporte à un système de communication (50), qui peut comprendre une première unité de communication portative (72) fonctionnant en mode de répartition avec au moins une seconde unité de communication portative (78), et un système d'infrastructure (50A et 50B) assurant la liaison de communication entre les première et seconde unités de communication portatives. Le système d'infrastructure peut comporter une mémoire (61,63), destinée à stocker de manière récursive le flux audio le plus récent émanant d'au moins l'une desdites unités de communication portatives. Le système d'infrastructure peut comprendre également un processeur d'application de répartition (62). Le système de communication peut en outre posséder un moyen permettant d'extraire le signal de répartition le plus récent stocké au niveau du système d'infrastructure lorsqu'il détermine que le niveau de qualité du signal reçu est inférieur à un seuil prédéterminé au niveau de la seconde unité de communication portative, ou lors d'une demande utilisateur d'au moins l'une des unités de communication portatives.

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