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Class Information
Number: 329/345
Name: Demodulators > Phase modulation demodulator
Description: Subject matter where the demodulator extracts the modulating signal from a modulated signal which has undergone phase modulation.

Sub-classes under this class:

Class Number Class Name Patents
329/346 Input signal combined with local oscillator or carrier frequency signal 89

Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8665014 I/Q demodulation apparatus and method with phase scanning Mar. 4, 2014
8559564 Transmitting/receiving system and method of processing broadcast signal in transmitting/receiving system Oct. 15, 2013
8520780 Communication units, communication system and methods for modulation and demodulation Aug. 27, 2013
8462894 Receiver circuit and receiver apparatus including the same Jun. 11, 2013
8331494 Combined digital down conversion (DDC) and decimation filter Dec. 11, 2012
8217683 Phase-detector for detecting phase difference of [PI]2N Jul. 10, 2012
8207699 Method and apparatus for AC motor control Jun. 26, 2012
8159290 Test apparatus, demodulation apparatus, test method, demodulation method and electric device Apr. 17, 2012
8144815 Demand-assigned multiple access (DAMA) communication device and associated acquisition methods Mar. 27, 2012
8014469 Pipeline architecture for multi-slot wireless link processing Sep. 6, 2011
7902918 Demodulation apparatus, test apparatus and electronic device Mar. 8, 2011
7894551 Modulation scheme detecting apparatus and related method Feb. 22, 2011
7881405 Combined mixer and polyphase decimator Feb. 1, 2011
7864893 Decoder with soft decision combining Jan. 4, 2011
7796710 Digital signal demodulator and wireless receiver using the same Sep. 14, 2010
7751303 Demodulation circuit for use in receiver using if directing sampling scheme Jul. 6, 2010
7746186 Wideband quadrature imbalance compensation system and method Jun. 29, 2010
7671671 Device and method for the demodulation of modulated electric signals Mar. 2, 2010
7449945 Phase demodulator and portable telephone apparatus Nov. 11, 2008
7248649 Digital baseband receiver including a time domain compensation module for suppressing group delay variation distortion incurred due to analog low pass filter deficiencies Jul. 24, 2007
7239431 System and method for recovering primary channel operation in a facsimile receiver and facsimile machine incorporating the same Jul. 3, 2007
7190742 Differential receiver circuit with electronic dispersion compensation Mar. 13, 2007
7190216 Demodulation circuit and receiving set Mar. 13, 2007
7129794 Phase detector for reducing noise Oct. 31, 2006
7079577 Wide window decoder circuit for dual phase pulse modulation Jul. 18, 2006
6859094 Phase demodulation method for minimizing phase error in communication signals Feb. 22, 2005
6765435 Phase locked loop demodulator and demodulation method using feed-forward tracking error compensation Jul. 20, 2004
6744827 Demodulator arrangement, method to demodulate, and telecommunication system comprising such a demodulator arrangement Jun. 1, 2004
6727985 System and method for signal acquisition in a distance meter Apr. 27, 2004
6724847 Feed-forward symbol synchronizer and methods of operation therefor Apr. 20, 2004
6700940 Carrier reproduction circuit Mar. 2, 2004
6611571 Apparatus and method for demodulating an angle-modulated signal Aug. 26, 2003
6407629 Sample and hold demodulator circuit Jun. 18, 2002
6298099 Constant envelope modulation communication system Oct. 2, 2001
6295015 Reference generator for demodulator calibration Sep. 25, 2001
6256359 RDS signal detection device Jul. 3, 2001
6246729 Method and apparatus for decoding a phase encoded data signal Jun. 12, 2001
6166594 Self calibrating demodulator system Dec. 26, 2000
6148038 Circuit for detecting and decoding phase encoded digital serial data Nov. 14, 2000
6112071 Quadrature-free RF receiver for directly receiving angle modulated signal Aug. 29, 2000
6072841 Block phase estimator for the coherent detection of non-differentially phase modulated data bursts on rician fading channels Jun. 6, 2000
6064702 Four-stage phase demodulation low frequency wireless mouse device May. 16, 2000
6002298 Reconstituted frequency modulation with feedforward demodulator Dec. 14, 1999
5949823 Data communication system and radio IC card system Sep. 7, 1999
5912929 Method and apparatus for performing carrier detection Jun. 15, 1999
5898739 QPSK demodulator for obtaining phase by arithmetic operation Apr. 27, 1999
5828708 CID demodulator for DCT Oct. 27, 1998
5751187 Method and device for phase-modulated signals May. 12, 1998
5724394 Viterbi decoding method and decoder capable of eliminating phase indeterminacy Mar. 3, 1998
5703908 Fixed reference shift keying modulation for mobile radio telecommunications Dec. 30, 1997

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