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SATELLITE BROADCAST RECEPTION SYSTEM AND LOW NOISE BLOCK DOWN CONVERTER AND SATELLITE BROADCAST RECEIVER USED IN SATELLITE BROADCAST RECEPTION SYSTEM
SATELLITE BROADCAST RECEPTION SYSTEM AND LOW NOISE BLOCK DOWN CONVERTER AND SATELLITE BROADCAST RECEIVER USED IN SATELLITE BROADCAST RECEPTION SYSTEM
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机译:卫星广播接收系统以及用于卫星广播接收系统的低噪声降频转换器和卫星广播接收器
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摘要
PROBLEM TO BE SOLVED: To provide a satellite broadcast reception system capable of connecting plural receivers.;SOLUTION: The low noise block down converter (LNB) 8 is provided with a 4×2 IF switch IC 32A for receiving polarized wave signals transmitted from two satellites, selecting the polarized wave signals corresponding to the output of a control microcomputer 38A and a voltage comparator 36A and outputting them from two output ports, IF amplifiers 34A and 34B connected to the two output ports of the 4×2 IF switch IC 32A respectively, the control microcomputer 38A connected the output ports A and B and for receiving digital serial data from a receiver connected to the respective output ports and supplying the selection signals of the satellite to the 4×2 IF switch IC 32A corresponding to the digital serial data and the voltage comparator 36A connected to the output ports A and B and for receiving a DC from the respective output ports and supplying the selection signals of the polarized wave signals to the 4×2 IF switch IC 32A.;COPYRIGHT: (C)2001,JPO
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