Patent ID: 8243651

Claim:
A terminal to receive a signal from a satellite, the terminal comprising: a receiver configured to receive the signal transmitted via the satellite; a header processor, communicatively coupled with the receiver, and configured to: receive a digitized stream comprising a physical layer signal representative of the received signal; process the digitized stream to detect a first physical layer header portion of the digitized stream; and demodulate and decode the first physical layer header portion to identify a first sub-channel identifier for a physical layer payload associated with the first physical layer header portion; a buffer, communicatively coupled with the receiver and a filter, and configured to store at least part of the digitized stream comprising the physical layer payload associated with the first physical layer header portion; and the filter, communicatively coupled with the header processor, and configured to: store one or more sub-channel identifiers indicating whether an associated physical layer payload is to be demodulated and decoded by the terminal; determine that the first sub-channel identifier matches one or more of the stored identifiers indicating that an associated physical layer payload should be filtered before demodulation and decoding; and filter the physical layer payload associated with the first physical layer header portion by controlling the buffer to overwrite the stored part of the digitized stream comprising the physical layer payload before the physical layer payload is forwarded for demodulation or decoding to prevent demodulation and decoding.