发明授权
- 专利标题： Radio receiver with automatic adjustment of oscillation frequencies
- 专利标题（中）： 无线电接收机可自动调节振荡频率
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申请号： US282238申请日： 1994-07-29
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公开(公告)号： US5752174A公开(公告)日： 1998-05-12
- 发明人: Masahiro Matai , Kunitoshi Yonekura
- 申请人： Masahiro Matai , Kunitoshi Yonekura
- 申请人地址： JPX Tokyo
- 专利权人： NEC Corporation
- 当前专利权人： NEC Corporation
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX5-208601 19930731
- 主分类号： H04B1/10
- IPC分类号： H04B1/10 ; H03D7/16 ; H03J1/00 ; H03J5/02 ; H03J7/06 ; H04B1/26 ; H04Q7/14 ; H04Q7/38 ; H04B1/16
摘要：
A radio selective calling receiver having at least two, i.e., a first and a second, local oscillators constituted by respective synthesizers. The oscillation frequencies of the local oscillator are controlled by the apparatus including a frequency calculator for executing frequency calculations according to the received call signal frequency and the oscillation frequencies of the first and second local oscillators so that harmonics of either one of the oscillation frequencies are not interference frequencies to the other oscillation frequency or the received signal frequency.
公开/授权文献
- US4940185A Safety exhaust valve equipped spray gun 公开/授权日：1990-07-10
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