RECEIVER FOR SATELLITE BROADCASTING

摘要

PURPOSE:To light up a display element corresponding to a channel to be used for antenna adjustment continuously and to check confirm the adjusting state simply by lighting up plural display elements corresponding to receivable channels successively in a prescribed order. CONSTITUTION:An FM satellite broadcasting wave received by a parabolic type BS receiving antenna 1 of a satellite broadcasting receiver is converted into an IF signal S1 by a BS converter 2 and inputted to a selection part 5 in a BS tuner 4 through a cable 3. The selection part 5 selects a channel and inputs the 2nd IF signal S2 to an AGC circuit 6. The circuit 6 suppresses noise included in the signal S2 and applies an AGC output signal S3 having a prescribed level to a video/voice processing circuit 7 and an AGC control signal S4 to an antenna adjustment specifying circuit 11. A character signal S5 outputted from the circuit 7 is applied to a character generator 14 in the circuit 11. A display driving circuit 15 is controlled by the outputs of a decision control circuit 12 for discriminating the state of a channel adjusting switch 13 and the generator 14 to display a picture.