Frequency shift key control in video delivery systems

Details Frequency shift key control in video delivery systems Frequency shift key control in video delivery systems

H - Electricity

04

N

H04N 7/20 (2006.01)

Patent

CA 2620940

Broadcast systems for selectively delivering satellite video signals. A system in accordance with the present invention comprises an antenna for receiving the satellite video signals, a plurality of amplifiers, coupled to the antenna, each amplifier receiving and amplifying specific satellite video signals based on an originating satellite for each of the satellite video signals, a multiswitch, having a plurality of inputs and a plurality of outputs, wherein at least some of the inputs are coupled to the plurality of amplifiers in a respective fashion, an interface, coupled to the multiswitch, and at least one receiver, coupled to the interface, each receiver being coupled to the interface on a common connection to the interface, wherein each receiver requests a specific satellite video signal by sending a shift-keyed signal to the interface.

L'invention concerne des systèmes de diffusion destinés à fournir sélectivement des signaux vidéo satellite. Un système selon la présente invention comprend une antenne pour recevoir les signaux vidéo satellite, plusieurs amplificateurs, couplés à l'antenne, chaque amplificateur recevant et amplifiant les signaux vidéo satellite basés sur un satellite d'origine pour chacun des signaux vidéo satellite, un commutateur multiple, possédant plusieurs entrées et plusieurs sorties couplées, au moins certaines des entrées étant couplées à plusieurs amplificateurs, respectivement, une interface, couplée au commutateur multiple, et au moins un récepteur, couplé à l'interface, chaque récepteur étant couplé à l'interface sur une connexion commune avec l'interface, chaque récepteur demandant un signal vidéo satellite spécifique par l'envoi d'un signal de décalage à l'interface.

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