Error detection in a signal in amplitude modulation

Details Error detection in a signal in amplitude modulation Error detection in a signal in amplitude modulation

2007-09-04

2007-09-04

Kinkead, Arnold (Department: 2817)

Demodulators

Amplitude modulation demodulator

C329S349000, C455S303000, C340S010400

Reexamination Certificate

active

11300537

ABSTRACT:
A method and a circuit for detecting a modulation factor in a signal received in amplitude modulation, including comparing the received signal with two first values, comparing the received signal with two second values ranging between the first two values, and considering the presence of an insufficient modulation depth if the received signal ranges between at least two of said values.

REFERENCES:
patent: 5874725 (1999-02-01), Yamaguchi et al.
patent: 6031419 (2000-02-01), Roberts et al.
patent: 6636146 (2003-10-01), Wehoski
patent: 6654466 (2003-11-01), Ikefuji et al.
patent: 2003/0085278 (2003-05-01), Schoenbauer
French Search Report from French Patent Application 04/52954, filed Dec. 14, 2004.

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