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    • 1. 发明授权
    • Broadcast receiving apparatus and method of detecting noise components performed by broadcast receiving apparatus
    • 广播接收装置以及由广播接收装置执行的噪声分量的检测方法
    • US08498597B2
    • 2013-07-30
    • US13030791
    • 2011-02-18
    • Kohta MiyagiKazuo TakayamaKeita Taniguchi
    • Kohta MiyagiKazuo TakayamaKeita Taniguchi
    • H04B17/00
    • H03G3/345
    • To provide a broadcast receiving apparatus including an AM detector, an AM noise detector, an FM detector, an FM noise-level detector, and a threshold control unit. The AM detector performs AM detection on a broadcast signal in airwaves received by a receiving antenna that receives incoming airwaves to acquire an AM detection signal. The AM noise detector detects a signal portion, in which the AM detection signal exceeds an AM noise threshold, as an AM noise component. The FM detector performs FM detection on the broadcast signal to acquire an FM detection signal. The FM noise-level detector detects an FM noise level of the FM detection signal. When the FM noise-level detector detects the FM noise level of the FM detection signal, the threshold control unit changes setting of the AM noise threshold in the AM noise detector based on the FM noise level of the FM detection signal.
    • 提供包括AM检测器,AM噪声检测器,FM检测器,FM噪声电平检测器和阈值控制单元的广播接收设备。 AM检测器对由接收进入的无线电波的接收天线接收的无线电波中的广播信号执行AM检测,以获取AM检测信号。 AM噪声检测器检测AM检测信号超过AM噪声阈值的信号部分作为AM噪声分量。 FM检测器对广播信号执行FM检测以获取FM检测信号。 FM噪声电平检测器检测FM检测信号的FM噪声电平。 当FM噪声电平检测器检测到FM检测信号的FM噪声电平时,阈值控制单元基于FM检测信号的FM噪声电平改变AM噪声检测器中AM噪声阈值的设置。