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Class Information
Number: 329/316
Name: Demodulators > Frequency modulation demodulator > Plural demodulation
Description: Subject matter which utilizes a diverse intermediate type of demodulator within the FM demodulator or combines the outputs of a plurality of FM demodulators or has an output selectable from a plurality of demodulators one of which must be an FM type.

Sub-classes under this class:

Class Number Class Name Patents
329/317 Including amplitude demodulation 40

Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8149975 Method and computer program for identifying a transition in a phase-shift keying or frequency-shift keying signal Apr. 3, 2012
7912144 Integrated modulators and demodulators Mar. 22, 2011
7899134 Dynamic demodulator selection based on channel quality Mar. 1, 2011
7852912 Direct determination equalizer system Dec. 14, 2010
7804376 Continuous phase modulation processing for wireless networks Sep. 28, 2010
7751303 Demodulation circuit for use in receiver using if directing sampling scheme Jul. 6, 2010
7664171 Uplink burst equalizing method in broad wide access system Feb. 16, 2010
7653152 Frequency measurement system for low modulation index digital FM/PM communication Jan. 26, 2010
7570716 Data carrier provided with at least two decoding stages Aug. 4, 2009
7133467 Demodulation apparatus and demodulation method Nov. 7, 2006
7068990 Receiver for two orthogonally polarized signals Jun. 27, 2006
7016661 Multi-mode receiver for frequency error mitigation Mar. 21, 2006
6927623 Amplitude-modulated signal receiving circuit Aug. 9, 2005
6912249 Method and system for training a radio receiver Jun. 28, 2005
6901108 Apparatus and method for adaptive control May. 31, 2005
6809584 Signal transmission and receiving methods optimized for integrated circuit implementation Oct. 26, 2004
6628706 Method and apparatus for transforming a channel estimate Sep. 30, 2003
6593805 Demodulation apparatus Jul. 15, 2003
6483381 Signal transmission and receiving methods optimized for integrated circuit implementation Nov. 19, 2002
6459333 Differentiate and divide FM demodulator Oct. 1, 2002
6373883 Radio receiver and a radio transmitter Apr. 16, 2002
6297691 Method and apparatus for demodulating coherent and non-coherent modulated signals Oct. 2, 2001
6204735 Geometrically modulated waves Mar. 20, 2001
6167081 Dual mode receiver Dec. 26, 2000
6163209 Demodulation of angle modulated carriers using a noncoherent reference Dec. 19, 2000
6037835 Multi-mode autonomous selection demodulator Mar. 14, 2000
6005896 Radio data communication device and radio data communication method Dec. 21, 1999
5987068 Method and apparatus for enhanced communication capability while maintaining standard channel modulation compatibility Nov. 16, 1999
5920238 Geometrically modulated waves Jul. 6, 1999
5767738 Apparatus and method for demodulating a modulated signal Jun. 16, 1998
5745005 Demodulating system for carrier-wave and single pulse modulated signals Apr. 28, 1998
5697086 Co-channel FM signal/interference canceller Dec. 9, 1997
5648986 Receiver in digital radio communication device with selective equalization Jul. 15, 1997
5648985 Universal radio architecture for low-tier personal communication system Jul. 15, 1997
5615411 Method and apparatus for composite signal separation and FM demodulation Mar. 25, 1997
5602484 Delay-spread sensor and detection switching circuit using the same Feb. 11, 1997
5594755 Apparatus for use in equipment providing a digital radio link between a fixed radio unit and a mobile radio unit Jan. 14, 1997
5563556 Geometrically modulated waves Oct. 8, 1996
5548243 Demodulator for demodulating a single side band signal, a real zero single side band signal and a frequency modulated signal, and a carrier signal reproducing circuit for the demodulator Aug. 20, 1996
5541552 Method of and apparatus for demodulating a signal conveyed by multiple carrier Jul. 30, 1996
5461347 Apparatus and method for geometrically modulating electromagnetic radiation and a receiver for decoding geometrically modulated signals Oct. 24, 1995
5446421 Local oscillator phase noise cancelling modulation technique Aug. 29, 1995
5283531 Demodulation apparatus incorporating adaptive equalizer for digital communication Feb. 1, 1994
5214391 Demodulation apparatus having multipath detector for selecting a first or second demodulator May. 25, 1993
5179360 Transmitting/receiving apparatus switchable between digital and analog modulation modes Jan. 12, 1993
5159282 Demodulation apparatus incorporating adaptive equalizer for digital communication Oct. 27, 1992
5119199 FM demodulator for video tape recorder Jun. 2, 1992
5095363 Method of demodulating multi-standard TV signals and a circuit device for implementing the method Mar. 10, 1992
4992747 Multiple reuse of an FM band Feb. 12, 1991
4910468 Dual polarization demodulation with cross polarization cancellation Mar. 20, 1990

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