Method and apparatus for squelch gating a receiving signal

Details Method and apparatus for squelch gating a receiving signal Method and apparatus for squelch gating a receiving signal

2011-03-15

2011-03-15

Nguyen, Duc (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency or phase modulation

C455S114200, C455S174100, C375S285000, C375S351000, C381S094500

Reexamination Certificate

active

07907923

ABSTRACT:
A method and an apparatus for squelch gating a receiving signal depending on the level of phase noise in said receiving signal determines sampled amplitudes and sampled phases of said receiving signal, determines sampled phase noise by differentiating subsequent sampled phases, determines a squelch signal by rectifying and averaging said sampled phase noise, determines a start point of gating after a rising of said squelch signal above a higher threshold delayed by a first delay time, determines a end point of gating after a dropping of said squelch signal below a lower threshold delayed by a second delay time and gates said sampled amplitudes from said start point of gating until said end point of gating.

REFERENCES:
patent: 3873926 (1975-03-01), Wright
patent: 3904969 (1975-09-01), Eastmond
patent: 3927376 (1975-12-01), Ferrie
patent: 3949301 (1976-04-01), Mattei
patent: 3978412 (1976-08-01), Frerking
patent: 3979679 (1976-09-01), Bush et al.
patent: 4041390 (1977-08-01), Schroeder
patent: 4153878 (1979-05-01), Osborn
patent: 4154980 (1979-05-01), Schmidt et al.
patent: 4479252 (1984-10-01), Souchay et al.
patent: 4724545 (1988-02-01), Hamada
patent: 5151922 (1992-09-01), Weiss
patent: 5303408 (1994-04-01), Ghomeshi et al.
patent: 5675614 (1997-10-01), Wetters
patent: 5734976 (1998-03-01), Bartschi et al.
patent: 6047170 (2000-04-01), Paulsen et al.
patent: 6208848 (2001-03-01), Bertrana
patent: 6347146 (2002-02-01), Short et al.
patent: 6397050 (2002-05-01), Peterson et al.
patent: 2001/0044289 (2001-11-01), Tsuji et al.
patent: 2003/0114126 (2003-06-01), Wang et al.
patent: 2003/0219085 (2003-11-01), Endres et al.
patent: 196 10 455 (1997-10-01), None
patent: 199 37 199 (2001-02-01), None
patent: WO 2004/038953 (2004-05-01), None

Affiliated with

Also associated with

Rating

Method and apparatus for squelch gating a receiving signal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for squelch gating a receiving signal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for squelch gating a receiving signal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2631153