专利检索 ap:("Yasuyuki Oishi" OR "Takeshi Takano" OR "Takaharu Nakamura" OR "Yukio Takeda" OR "Yasunobu Watanabe") AND inv:"Yasunobu Watanabe" 第 1 页

1.

发明授权
FSK demodulation circuit 失效
标题翻译： FSK解调电路

公开(公告)号：US4870659A

公开(公告)日：1989-09-26

申请号：US237535

申请日：1988-08-29

申请人： Yasuyuki Oishi , Takeshi Takano , Takaharu Nakamura , Yukio Takeda , Yasunobu Watanabe

发明人： Yasuyuki Oishi , Takeshi Takano , Takaharu Nakamura , Yukio Takeda , Yasunobu Watanabe

IPC分类号： H04L27/152

CPC分类号： H04L27/1525

摘要： An FSK demodulation circuit which receives as input an FSK modulated reception signal, obtains two quadrature pulse trains, i.e., a first pulse train and a second pulse train, from a phase detection circuit, is provided with at least two sampling means which use the edge of one of the pulse trains and sample the logic of the other pulse train, produces two or more sample outputs at different timings, and determines the logic of the reproduced data from a combination of the logics "1" and "0" of the sample outputs.