发明名称 INTERMEDIATE FREQUENCY VIDEO CIRCUIT
摘要 PROBLEM TO BE SOLVED: To receive a conventional analog television signal even when a digital television signal is transmitted through adjacent channels without being affected by it. SOLUTION: The video intermediate frequency circuit is provided with a video detection circuit 2 that detects an intermediate frequency signal to output a video signal and a video amplifier circuit 5 that amplifies the video signal. An attenuation means 4 that attenuates a signal with a higher frequency band than a frequency band of a voice carrier is provided between the video detection circuit 2 and the video amplifier circuit 5, and the video signal via the attenuation means 4 is given to the video amplifier circuit 5.
申请公布号 JP2000333096(A) 申请公布日期 2000.11.30
申请号 JP19990140725 申请日期 1999.05.20
申请人 ALPS ELECTRIC CO LTD 发明人 FUJITA RYUSUKE
分类号 H04N5/21;H04B1/10;H04N5/455;(IPC1-7):H04N5/455 主分类号 H04N5/21
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