Demodulators – Phase shift keying or quadrature amplitude demodulator – Including logic element
Reexamination Certificate
2006-12-12
2006-12-12
Chang, Joseph (Department: 2817)
Demodulators
Phase shift keying or quadrature amplitude demodulator
Including logic element
C375S326000, C375S324000
Reexamination Certificate
active
07148743
ABSTRACT:
A demodulation device is provided that includes first and second power control circuits and demodulation circuits. The first power control circuit keeps the amplitude of a modulated input signal constant, and the demodulation circuits applying a demodulation processing to the input signal. The second input signal power control circuit generates a control signal having a signal present state representing detection of the presence of the input signal and a signal disappeared state representing detection of disappearance of the input signal. The demodulation device further includes means for deactivating the demodulation circuits when the control signal changes from the signal present state to the signal disappeared state, and for activating the demodulation circuits when the control signal changes from the signal disappeared state to the signal present state so as to enable a fast restart of the demodulation processing.
REFERENCES:
patent: 5999559 (1999-12-01), Takaki
patent: 6510188 (2003-01-01), Isaksen et al.
patent: 6879646 (2005-04-01), Arambepola
patent: 1 155 541 (2001-11-01), None
patent: 2 830 390 (2003-04-01), None
French Preliminary Search Report dated Jul. 15, 2004 for French Application No. 03 11042.
Bona Mariano
Paille Bruno
Bongini Stephen
Chang Joseph
Fleit Kain Gibbons Gutman Bongini & Bianco P.L.
Jorgenson Lisa K.
STMicroelectronics SA
LandOfFree
Demodulation device for reacquiring a modulated signal if... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Demodulation device for reacquiring a modulated signal if..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Demodulation device for reacquiring a modulated signal if... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3706757