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    • 137. 发明授权
    • Satellite broadcast receiving converter with lower power consumption
    • 卫星广播接收转换器具有较低的功耗
    • US07136618B2
    • 2006-11-14
    • US10334895
    • 2003-01-02
    • Masahiro KatoMotohisa Nishina
    • Masahiro KatoMotohisa Nishina
    • H94H1/00
    • H04H40/90H04B1/18Y02D70/40
    • A control portion detects the presence or absence of a pulse signal provided from a satellite broadcast receiver through a port PO to output a control signal PDOUT. In accordance with control signal PDOUT, a power supply circuit stops a supply of one of a power supply potential BIAS1 fed to LNA 22A and a power supply potential BIAS2 fed to LNA 22B. Therefore, the power consumption in an LNB designed for multi-satellite can be reduced and even a satellite broadcast receiver having a small current-supply capability can be connected. In this way, a low noise block down converter for multi-satellite with lower power consumption can be provided.
    • 控制部分通过端口PO检测从卫星广播接收机提供的脉冲信号的存在或不存在,以输出控制信号PDOUT。 根据控制信号PDOUT,电源电路停止馈送到LNA22A的馈电电位BIAS 1和馈送到LNA 22B的电源电位BIAS 2中的一个的供应。因此,设计的LNB的功耗 可以减少多卫星,并且甚至可以连接具有小电流供应能力的卫星广播接收机。 以这种方式,可以提供具有较低功耗的用于多卫星的低噪声阻塞转换器。