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Class Information
Number: 375/331
Name: Pulse or digital communications > Receivers > Angle modulation > Phase shift keying > Differential (diphase) > More than two phases
Description: Subject matter in which there are at least three possible phases that the received signal can assume.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8548530 Mobile terminal and operation control method thereof Oct. 1, 2013
8532659 Mobile control device that performs handover control Sep. 10, 2013
8520780 Communication units, communication system and methods for modulation and demodulation Aug. 27, 2013
8401120 Symbol error detection for bluetooth enhanced data rate packets Mar. 19, 2013
8401121 Symbol error detection for bluetooth basic data rate packets Mar. 19, 2013
8218696 Receiving apparatus, receiving method, integrated circuit, digital television receiver, and program Jul. 10, 2012
8199859 Integrating receiver with precharge circuitry Jun. 12, 2012
8170149 OFDM receiver apparatus May. 1, 2012
8139688 Differential receiver with frequency offset compensation Mar. 20, 2012
8085879 Method for amplitude insensitive packet detection Dec. 27, 2011
8054877 Constellation recovery for quadrature amplitude modulation Nov. 8, 2011
8050368 Nonlinear adaptive phase domain equalization for multilevel phase coded demodulators Nov. 1, 2011
8040979 Generating a phase value for a complex signal Oct. 18, 2011
8023576 Apparatus and method to estimate sampling offset Sep. 20, 2011
7995678 System and method for communicating data using weighted bit soft decisions for differentially encoded phase shift keying Aug. 9, 2011
7903760 Digital modulation circuit and method as well as digital demodulation circuit and method Mar. 8, 2011
7884748 Ramp-based analog to digital converters Feb. 8, 2011
7864892 Control method and apparatus for receiving optical signal Jan. 4, 2011
7844011 Apparatus and method for improving symbol error rate performance of M-ary phase shift keying system having quadrature error Nov. 30, 2010
7817767 Processor-controlled clock-data recovery Oct. 19, 2010
7809088 Multiphase receiver with equalization Oct. 5, 2010
7809083 Differential receiver with frequency offset compensation Oct. 5, 2010
7764733 Constellation recovery for quadrature amplitude modulation Jul. 27, 2010
7738357 Apparatus and method for carrier frequency offset estimation and correction in a wireless communication system Jun. 15, 2010
7715484 Orthogonal frequency division multiplexing with PN-sequence May. 11, 2010
7702047 RF receiving apparatus and method for removing leakage component of received signal Apr. 20, 2010
7643579 Multiple differential demodulator using weighting value Jan. 5, 2010
7613261 Method of estimating symbol synchronization in OQPSK demodulator Nov. 3, 2009
7606328 Common signal generation for an RF receiver Oct. 20, 2009
7599452 Method and system for applying Viterbi type PSK demodulation for optimum correlation of GPS signals Oct. 6, 2009
7567642 Phase detector with extended linear operating range Jul. 28, 2009
7567631 Method for amplitude insensitive packet detection Jul. 28, 2009
7542521 Direct-conversion frequency mixer Jun. 2, 2009
7542529 Wireless receiving device suppressing occurrence of reception error Jun. 2, 2009
7519134 Method and apparatus to determine phase difference between a received analog signal and a reference signal based upon a local oscillator Apr. 14, 2009
7469022 Methods and apparatus for symmetrical phase-shift keying Dec. 23, 2008
7440410 Off-line broadband network interface Oct. 21, 2008
7391840 Phase locked loop circuit, electronic device including a phase locked loop circuit and method for generating a periodic signal Jun. 24, 2008
7315587 Demodulation method and apparatus based on differential detection system for .pi./4 shifted QPSK modulated wave Jan. 1, 2008
7295601 Method and apparatus for performing digital timing recovery on oversampled 802.11b baseband signals Nov. 13, 2007
7292655 Apparatus and method and decoding biphase signals Nov. 6, 2007
7277504 Method and system for concurrent estimation of frequency offset and modulation index Oct. 2, 2007
7177374 Apparatus and method for sampling frequency offset estimation and correction in a wireless communication system Feb. 13, 2007
7109787 High-efficiency circuit for demodulating carriers in quadrature Sep. 19, 2006
7095807 Method for decoding biphase signals Aug. 22, 2006
7092461 Polyphase receivers Aug. 15, 2006
7072426 Demodulation apparatus and method in a communication system employing 8-ary PSK modulation Jul. 4, 2006
7046743 Demodulator for demodulating digital modulated signals May. 16, 2006
7016425 Quasi-differential modulation/demodulation method for multi-amplitude digital modulated signals and OFDM system Mar. 21, 2006
6999502 Method for receiving CDMA signals with synchronization resulting from delayed double multiplication and corresponding receiver Feb. 14, 2006

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