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Class Information
Number: 329/321
Name: Demodulators > Frequency modulation demodulator > Having specific distortion, noise or other interference prevention, reduction or compensation > Using amplitude limiting within the demodulator
Description: Subject matter which restricts the magnitude of signal fluctuations within the demodulator itself to achieve the neutralization.










Patents under this class:

Patent Number Title Of Patent Date Issued
8199860 Detection circuit and detection method of carrier offset Jun. 12, 2012
7978788 Method and arrangement for estimating DC offset Jul. 12, 2011
7570715 Digital signal receiving circuit Aug. 4, 2009
7339809 Systems and methods for electrical power regulation and distribution in aircraft Mar. 4, 2008
6822508 Communication device, communication method, program, and storage medium Nov. 23, 2004
6664849 Digital FM demodulator performing amplitude compensation Dec. 16, 2003
6546237 Differential FM detector for radio receivers Apr. 8, 2003
6160444 Demodulation of FM audio carrier Dec. 12, 2000
6020784 FM demodulation circuit Feb. 1, 2000
6008693 FM-sound demodulator for TV sound signals and method of detecting sound carriers Dec. 28, 1999
5937017 Complex signal limiting Aug. 10, 1999
5778310 Co-channel interference reduction Jul. 7, 1998
5740207 Complex signal limiting Apr. 14, 1998
5631601 FM demodulation with a variable gain phase locked loop May. 20, 1997
5412692 Data slicer May. 2, 1995
5341107 FM quadrature demodulator with two phase comparison circuits Aug. 23, 1994
5333150 Demodulation and synchronization method and system for digitally modulated signals Jul. 26, 1994
5329242 Method and apparatus for signal demodulation using time-intervals Jul. 12, 1994
5272448 Method and apparatus to perform digital demodulation by measuring periods between zero crossings Dec. 21, 1993
5239273 Digital demodualtor using signal processor to evaluate period measurements Aug. 24, 1993
5166633 Angle modulation dectector Nov. 24, 1992
5159281 Digital demodulator using numerical processor to evaluate period measurements Oct. 27, 1992
5051703 FM demodulator with tracking filter Sep. 24, 1991
5015961 Frequency shift demodulator May. 14, 1991
4992748 Period-inverting FM demodulator Feb. 12, 1991
4897608 Circuit arrangement for frequency-modulated picture signals Jan. 30, 1990
4731872 FM TVRO receiver with improved oscillating limiter Mar. 15, 1988
4679247 FM receiver Jul. 7, 1987
4673898 Wide band quadrature hybrid Jun. 16, 1987
4450590 Discriminator circuit for frequency modulation receivers May. 22, 1984
4442549 Meter drive circuit Apr. 10, 1984
4317210 Coherent receiver for angle-modulated data signals Feb. 23, 1982
4266296 Multipath distortion compensation circuit and method May. 5, 1981
4263554 Frequency discriminator apparatus Apr. 21, 1981
4256975 Limiter circuit for removing nose from demodulated signals Mar. 17, 1981
4101837 Threshold extension FM demodulator apparatus for wide band width FM signals Jul. 18, 1978
4035730 FM noise threshold extension demodulator apparatus Jul. 12, 1977
4031483 Limiter circuit for servosystems Jun. 21, 1977
3971997 Sea spike suppression technique Jul. 27, 1976











 
 
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