Title:
振幅変調された交流信号のための復調器
Document Type and Number:
Japanese Patent JP4721605
Kind Code:
B2
Abstract:
The invention concerns a demodulator of an amplitude-modulated signal (Vdb), characterised in that it comprises a peak detecting cell (DCR) capable of extracting the reference modulating signal (Vpeak 1 ) of the modulated signal (Vdb); a first demodulator (FE) adapted to detect the peak of the reference modulating signal (Vpeak 1 ) to generate a high comparison threshold and locate the start of the modulation, a second demodulator (RE) adapted to detect a trough of the reference modulating signal (Vpeak 1 ) to generate a low comparison threshold and locate the end of the modulation; a logic processing unit capable of supplying the demodulated signal (Vdemod).
Inventors:
De Lova, Francis
Reso, Pierre
Reso, Pierre
Application Number:
JP2001570039A
Publication Date:
July 13, 2011
Filing Date:
March 20, 2001
Export Citation:
Assignee:
STMicroelectronics Society Anonymous
International Classes:
H03D1/00; H04L27/06; G06K7/00; G06K19/07; H03D1/10; H03K5/08; H04L25/03; H04L25/06
Domestic Patent References:
| JP10038931A | ||||
| JP9247219A | ||||
| JP11088449A | ||||
| JP2000078211A | ||||
| JP10013361A | ||||
| JP2000510633A |
Foreign References:
| US3638183 | ||||
| US6031419 | ||||
| US4943736 | ||||
| US4672238 | ||||
| US4362996 | ||||
| WO1999042948A1 | ||||
| EP0338517A1 |
Attorney, Agent or Firm:
Takashi Koshiba