| 摘要 |
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.
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