发明名称 DIVERSITY SYSTEM FOR MOBILE TV AND SIGNAL RECEIVING METHOD FOR MOBILE TV
摘要 PROBLEM TO BE SOLVED: To provide a satisfactory mobile TV use diversity system that can ensure an superior receiving state by suppressing deterioration or distortion of video and audio data, even in an area with a strong electric field and to provide a mobile TV use signal receiving method. SOLUTION: A reception elesctric field state is discriminate, in response to an AGC voltage fed to a high frequency tuner 3 and a signal level detected by an audio detection circuit 7 and discriminated by a signal level detection circuit 10 that generates a DC voltage, and when the reception state indicates a strong electric field state, an antenna changeover signal outputted to an antenna changeover circuit 2 selects no antenna, so as to suppress deterioration or distortion in video audio data, even in an area with a strong electric field strength, thereby ensuring a satisfactory reception state.
申请公布号 JP2000341186(A) 申请公布日期 2000.12.08
申请号 JP19990151604 申请日期 1999.05.31
申请人 MATSUSHITA ELECTRIC IND CO LTD 发明人 NAKAMURA MASAHIKO
分类号 H04B7/08;H04N5/44;(IPC1-7):H04B7/08 主分类号 H04B7/08
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