Pulse or digital communications – Receivers – Angle modulation
Reexamination Certificate
2007-08-29
2011-10-18
Deppe, Betsy (Department: 2611)
Pulse or digital communications
Receivers
Angle modulation
C375S261000, C375S354000
Reexamination Certificate
active
08040977
ABSTRACT:
This invention provides a reception synchronization control device that controls reception synchronization of demodulated signals to be established, the demodulated signals being obtained by demodulating a phase modulated signal transmitted by a phase modulation, wherein the reception synchronization control device includes a signal level detector that detects signal levels of sampled demodulated signals extracted by sampling analog demodulated signals; a constellation position specifier that specifies constellation positions of plural kinds of data contained in the sampled demodulated signals displayed on a polar coordinates display based on the detected signal levels; and a phase angle difference calculation processor that calculates a difference between a phase angle calculated based on the specified constellation positions and a reference phase angle, thereby controlling the phase angle so that the difference is within a predetermined range. Further, the invention discloses a reception synchronization control method, to control reception synchronization of demodulated signals to be established, using the above reception synchronization control device, etc.
REFERENCES:
patent: 5861773 (1999-01-01), Meyer
patent: 5889759 (1999-03-01), McGibney
patent: 2004/0005017 (2004-01-01), Borowski
patent: 2005/0169394 (2005-08-01), Jeong
patent: 11-331299 (1999-11-01), None
patent: 2001-024603 (2001-01-01), None
Korean Patent Office “Decision to Grant a Patent” (Dated Aug. 4, 2009).
Isogai Masaki
Kubota Seiji
Nakazawa Sumito
Deppe Betsy
Fujitsu Limited
Fujitsu Patent Center
LandOfFree
Reception synchronization control device, reception... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Reception synchronization control device, reception..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reception synchronization control device, reception... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4284995