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公开(公告)号：EP1665610A1
公开(公告)日：2006-06-07
申请号：EP05767277.6
申请日：2005-07-22
CPC分类号： H03G3/3078 , H03G3/3068
摘要： In order to realize a demodulator circuit and a demodulation method of controlling the amplification degree of an AGC in order that the optimum C/N value near the best C/N value can be always secured in the whole AGC voltage region, the amplification degrees of AGC's 122 and 126 is controlled based on a change of the reception grade of a received signal having been outputted from a FFT 132 of a demodulator circuit unit 13 after being received by an antenna 11 and being amplified by a tuner unit 12. Consequently, the amplification degree can be immediately modified according to a change of the reception grade, and consequently the optimum reception grade can be secured always.
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公开(公告)号：EP1665610B1
公开(公告)日：2012-03-07
申请号：EP05767277.6
申请日：2005-07-22
CPC分类号： H03G3/3078 , H03G3/3068
摘要： In order to realize a demodulator circuit and a demodulation method of controlling the amplification degree of an AGC in order that the optimum C/N value near the best C/N value can be always secured in the whole AGC voltage region, the amplification degrees of AGC's 122 and 126 is controlled based on a change of the reception grade of a received signal having been outputted from a FFT 132 of a demodulator circuit unit 13 after being received by an antenna 11 and being amplified by a tuner unit 12. Consequently, the amplification degree can be immediately modified according to a change of the reception grade, and consequently the optimum reception grade can be secured always.
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