Patent ID: 7567778

Claim:
A switching controlling apparatus for controlling a radio frequency (RF) switch of a satellite transponder for multibeam communication, said apparatus comprising: an earth control station interfacing unit comprising: a controller for receiving control commands transmitted over an uplink from an earth control station, analyzing the commands and transmitting the commands to corresponding parts of the switch controlling apparatus; and a monitoring unit for periodically collecting operation states of modules in the switch controlling apparatus and reporting the operation states to the earth control station so that the operation states of the switch controlling apparatus can be monitored in the earth control station; a reference frequency generating unit for generating a reference clock needed to operate the switch controlling apparatus and for generating a reference frequency needed for the operation of the switch controlling apparatus based on the reference clock; and a switch controlling unit for reading contents of a memory that stores a switching sequence periodically, detecting and correcting an error of the contents to generate a switch control signal, and transmitting the switch control signal to said RF switch.