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2. 发明授权

US4285006A Ghost cancellation circuit system 失效
标题翻译：鬼消除电路系统
公开(公告)号：US4285006A
公开(公告)日：1981-08-18
申请号：US61021
申请日：1979-07-26
申请人： Koichiro Kurahashi , Yoshiro Nakajima , Yoshiki Mizutani
发明人： Koichiro Kurahashi , Yoshiro Nakajima , Yoshiki Mizutani
IPC分类号： H04N5/21
CPC分类号： H04N5/211
摘要： A ghost cancellation circuit system comprises an amplifier for forming an output signal of a composite wave of a direct wave and a ghost wave; a carrier wave extracting circuit for extracting the carrier wave having the reference phase from the output signals of the amplifier; phase shifting means for generating a detection axis signal having the specific phase of the output of the carrier wave extracting circuit; a pair of phase detection circuits for a phase detection of the output of the amplifier by the detection axis signal of the phase shifting means or the carrier wave extracting circuit, and a delay circuit for forming the output in delay for a time substantially equal to the delay time of the ghost wave by receiving the output of the pair of phase detection circuits through a pair of coefficient circuits, whereby at least a specific component of the ghost wave is cancelled by summing the output of the delay circuit to the output of the phase detection circuit.
摘要翻译：重影消除电路系统包括：放大器，用于形成直波和重影波的复合波的输出信号; 载波提取电路，用于从放大器的输出信号中提取具有基准相位的载波; 相移装置，用于产生具有载波提取电路的输出的特定相位的检测轴信号; 一对相位检测电路，用于通过相移装置或载波提取电路的检测轴信号对放大器的输出进行相位检测;以及延迟电路，用于将输出的延迟形成大致等于通过一对系数电路接收一对相位检测电路的输出，从而通过将延迟电路的输出与相位的输出相加来消除重影波的特定分量，从而消除重影波的延迟时间检测电路。

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