Amplitude modulation apparatus |
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| 申请号 | EP88200506.9 | 申请日 | 1988-03-18 | 公开(公告)号 | EP0284152A3 | 公开(公告)日 | 1990-06-27 |
| 申请人 | Philips Electronics N.V.; | 发明人 | Katsuhiro, Endo; Yasumichi, Imai; | ||||
| 摘要 | An amplitude modulation apparatus characterized in that a high frequency modulation circuit (3) is provided at the down-stream side of an automatic output control circuit (2) which inputs a low frequency signal, the high frequency signal level of an output of said high frequency modulation circuit being detected to obtain a detection signal which activates said automatic output control circuit. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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