Demodulators – Amplitude modulation demodulator – Having specific distortion – noise or other interference...
Patent
1982-03-22
1984-10-09
Laroche, Eugene R.
Demodulators
Amplitude modulation demodulator
Having specific distortion, noise or other interference...
329106, 329126, 329145, 332 1, 375 94, 455214, H03D 300, H03K 908
Patent
active
044764359
ABSTRACT:
The digital demodulation of frequency modulated signals produces a pulse duration modulated signal proportional to the analog modulation signal component of the FM input signal from the FM input signal and a delayed version thereof and the pulse duration modulated signal is then converted to a digital signal representative of the analog modulation signal component of the FM signal by a delta sigma modulator and a decimator which also provides equalization of the FM signal to remove pre-emphasis applied to the FM signal prior to its transmission.
REFERENCES:
patent: 3528019 (1970-09-01), Inoue
patent: 4054840 (1977-10-01), Sato
Agrawal Bgahwati P.
Chang Hyokang
Shenoi Kishan
Hill Alfred C.
International Telephone and Telegraph Corporation
LaRoche Eugene R.
Morris Jeffrey P.
O'Halloran John T.
LandOfFree
Digital demodulation of frequency modulated signals does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Digital demodulation of frequency modulated signals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital demodulation of frequency modulated signals will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1603497