Patent ID: 8774404

Claim:
A signal receiving system comprising: a receiver configured to receive a scrambled signal corresponding to a first broadcasting provider or a second broadcasting provider; a filter to extract information of a desired program from the scrambled signal to generate an extracted scrambled signal, the filter extracting only packets for the desired program from a transport stream, in which the desired program is included, by referring to a packet ID; a first descrambler configured to descramble an extracted scrambled signal corresponding to the first broadcasting provider; a second descrambler configured to descramble an extracted scrambled signal corresponding to the second broadcasting provider; and a selector configured to select one of first descrambler and second descrambler, wherein the receiver and filter are controlled by a first microprocessor unit, and the filter is coupled to a first digital interface, and wherein the system further comprises a second digital interface for receiving a descrambled signal generated by either of the first descrambler or second descrambler, a demultiplexer for demultiplexing a signal received from the second digital interface, and a second microprocessor unit for controlling the demultiplexer.