发明授权
- 专利标题： Digital demodulator for AM or FM
- 专利标题（中）： 用于AM或FM的数字解调器
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申请号： US305180申请日： 1989-02-02
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公开(公告)号： US4885546A公开(公告)日： 1989-12-05
- 发明人: Shoji Araki
- 申请人： Shoji Araki
- 申请人地址： JPX Tokyo
- 专利权人： Sony Corp.
- 当前专利权人： Sony Corp.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX63-29125 19880210; JPX63-129933 19880527
- 主分类号： H03D1/00
- IPC分类号： H03D1/00 ; H04N7/12 ; H04N7/24
摘要：
In a demodulating circuit, for example, for demodulating an amplitude- or frequency-modulated signal, analog-to-digital converted values are obtained at a plurality of sampling points in each cycle of the modulated signal, such converted values are integrated to provide a calculated integration value for the respective cycle, and the calculated integration value is compared with a maximal integration value derived in the same manner so as to obtain the demodulated output.
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