Patent ID: 7136618

Claim:
A satellite broadcast receiving converter allowing a first satellite broadcast receiver to receive broadcasting signals transmitted from a plurality of satellites, comprising: a first signal receiving portion receiving a first broadcasting signal transmitted from a first satellite of said plurality of satellites to supply a first RF signal; a first amplifying portion amplifying said first RF signal; a second signal receiving portion receiving a second broadcasting signal transmitted from a second satellite of said plurality of satellites to supply a second RF signal; a second amplifying portion amplifying said second RF signal; a first frequency conversion portion converting outputs of said first and second amplifying portions respectively to first and second IF signals in an intermediate frequency band, selecting and outputting one of said first and second IF signals; a third amplifying portion amplifying an output of said first frequency conversion portion; a first port receiving a signal from said third amplifying portion for output to said first satellite broadcast receiver; a first DC component blocking portion provided between said third amplifying portion and said first port; a power supply circuit receiving a first external power supply potential from said first satellite broadcast receiver through said first port and independently supplying first and second internal power supply potentials respectively to said first and second amplifying portions; and a control portion instructing inactivation of an internal power supply potential, corresponding to an unselected satellite, of said first internal power supply potential and said second power supply potential to said power supply circuit in accordance with a select instruction applied from said first satellite broadcast receiver, and performing select control of said first frequency conversion portion.