发明名称 Detecting circuit.
摘要 <p>A television receiver includes a correction filter (10) having an inclination characteristic opposite to a slope of a video intermediate frequency signal. The video intermediate frequency signal corrected by the correction filter is applied to a PLL circuit (11) and the PLL circuit generates a carrier signal of a video intermediate frequency locked to the video intermediate frequency signal. A synchronous detecting circuit (16) detects the video intermediate frequency signal before the correction in response to the signal outputted from the PLL circuit and outputs a video signal. At the same time, it generates a sound FM signal corresponding to a beat of the carrier signal of the video intermediate frequency and a carrier signal of a sound intermediate frequency. A sound detecting circuit (20) detects the sound FM signal and outputs a sound signal.</p>
申请公布号 EP0347807(A1) 申请公布日期 1989.12.27
申请号 EP19890111122 申请日期 1989.06.19
申请人 SANYO ELECTRIC CO., LTD. 发明人 IMAIZUMI, HIDEO
分类号 H03D1/22;H04N5/455;H04N5/60;H04N5/62 主分类号 H03D1/22
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