广播接收装置及广播接收装置的噪声分量检测方法制造方法及图纸

本发明专利技术提供一种广播接收装置及广播接收装置的噪声分量检测方法。广播接收装置(1)具有：AM检波部(31)，其对通过接收到来的广播电波的接收天线而接收到的广播电波的接收信号进行AM检波，以取得AM检波信号；和AM噪声检测部(32)，其将AM检波信号超过AM噪声阈值Vtha的信号部位检测为AM噪声分量，该广播接收装置还具有：FM检波部(33)，其对广播信号进行FM检波，以取得FM检波信号；FM噪声电平检测部(34)，其对FM检波信号的FM噪声电平进行检测；和阈值控制部(36)，在由FM噪声电平检测部(34)检测出FM检波信号的FM噪声电平时，基于该FM检波信号的FM噪声电平对AM噪声检测部(32)的AM噪声阈值Vtha进行设定变更。由此，可以高精度地识别与接收环境对应的广播信号的噪声有无。

Broadcast receiving device and noise component detecting method of broadcast receiving device

The invention provides a broadcast receiving device and a noise component detecting method of a broadcast receiving device. Broadcast receiving device (1) having a detection unit (31): AM, radio waves received signal at the receiving antenna to receive incoming radio waves through the received AM detection, to obtain AM detection signal; AM noise and detection (32), which will be part of AM signal detection signal over AM noise the threshold of the detection of Vtha AM noise component, the broadcast receiving apparatus has: FM detection unit (33), the FM detection of the broadcast signal, in order to obtain the FM detection signal; FM noise level detecting section (34), the FM detection signal FM noise level was detected; and the threshold control department (36), by FM noise level detecting section (34) to detect FM FM noise detection signal level, FM noise level of the FM detection signal on noise detection based on AM (32) AM Vtha is set to change the noise threshold. As a result, the noise of the broadcast signal corresponding to the reception environment can be accurately recognized.

【技术实现步骤摘要】

【技术保护点】
１．一种广播接收装置，其具有：接收到来的广播电波的接收部；对由该接收部所接收的广播电波的广播信号进行ＡＭ检波，以取得ＡＭ检波信号的ＡＭ检波部；将所述ＡＭ检波信号超过规定噪声阈值的信号部位检测为该ＡＭ检波信号的噪声分量的ＡＭ检波用噪声检测部，该广播接收装置的特征在于，还具有：ＦＭ检波部，其对所述广播信号进行ＦＭ检波，以取得ＦＭ检波信号；和阈值控制部，其基于由所述ＦＭ检波部取得的所述ＦＭ检波信号，对所述ＡＭ检波用噪声检测部的所述规定噪声阈值进行设定变更。

【技术特征摘要】
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【专利技术属性】
技术研发人员：宫城康太，高山一男，谷口庆太，
申请(专利权)人：富士通天株式会社，
类型：发明
国别省市：JP