Patent ID: 7701894
Filing Date: 2010-04-20
Classification: H04B

Abstract:
1. A data switching system for a satellite in a satellite data transmission system relaying from a terrestrial sending area to a terrestrial receiving area via said satellite, data including payload data and associated control data, which comprises respective switching requests and provides data on the switching of said payload data, said data switching system comprising: a plurality of first inputs for receiving payload data channels carrying said payload data, a plurality of second inputs for receiving control data channels carrying said associated control data including said switching requests and said data on the switching of said payload data, means connected to said second inputs for analyzing control data based on a signal conveying said control data; and switching means connected to said first inputs and comprising a plurality of outputs connected to a plurality of sending ports for sending said data to said receiving area, said switching means for switching said payload data as a function of a result of said analysis of said associated control data to at least one of said plurality of sending ports for sending said data to said receiving area, wherein said analyzer means analyzes only said control data, and said payload data is not analyzed, wherein said payload data is not demodulated/decoded or de-assembled onboard said satellite, and further wherein said means for analyzing comprises a plurality of outputs for supplying centering data at the plurality of outputs of the switching means.