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Radio broadcast receiver, automatic tuning device for radio broadcast and method for receiving radio broadcast
Radio broadcast receiver, automatic tuning device for radio broadcast and method for receiving radio broadcast
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机译:无线电广播接收机,用于无线电广播的自动调谐装置以及用于接收无线电广播的方法
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摘要
A radio broadcast receiver includes: a frequency conversion circuit for receiving a radio broadcast wave and for outputting a reception signal; a detection circuit for detecting the reception signal of an analog radio broadcast wave and for outputting a detection signal; an automatic tuning device for searching a broadcast frequency; and a noise amplifier for amplifying a noise component in the detection signal and for outputting a noise detection signal. The automatic tuning device selects the broadcast frequency when the reception signal level is equal to or larger than a predetermined electric field intensity threshold value and a noise detection signal level is equal to or smaller than a predetermined noise determination threshold value.
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