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Class Information
Number: 375/329
Name: Pulse or digital communications > Receivers > Angle modulation > Phase shift keying
Description: Subject matter in which the phase of the carrier detected has been varied according to the pulse or digital information.

Sub-classes under this class:

Class Number Class Name Patents
375/333 Biphase (manchester code) 193
375/330 Differential (diphase) 234
375/332 Plural phase (>2) 402

Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14

Patent Number Title Of Patent Date Issued
8705658 Method and apparatus of modulating signal in broadcasting and communication system Apr. 22, 2014
8705656 Transmission and reception apparatus and method Apr. 22, 2014
8705663 Receiver architecture and methods for demodulating binary phase shift keying signals Apr. 22, 2014
8705664 Soft-input generation for soft-decision FEC decoding Apr. 22, 2014
8675744 Channel tracking in an orthogonal frequency-division multiplexing system Mar. 18, 2014
8674758 Method and apparatus for improved high order modulation Mar. 18, 2014
8670505 Early detection of segment type using BPSK and DBPSK modulated carriers in ISDB-T receivers Mar. 11, 2014
8665998 Maximum likelihood detection method using a sequence estimation receiver Mar. 4, 2014
8660215 Decoding algorithm for frequency shift key communications Feb. 25, 2014
8654897 Receiving circuit, transmitting circuit, micro-controller and method for power line carrier communication Feb. 18, 2014
8648698 Method and system for radio frequency identification tag using reduced set communication protocol Feb. 11, 2014
8634450 Adaptive error correcting code for data communications over a plastic optical fibre Jan. 21, 2014
8630374 Packet detection and coarse symbol timing for rotated differential M-ary PSK modulated preamble signal Jan. 14, 2014
8619924 Circuit, use, and method for controlling a receiver circuit Dec. 31, 2013
8611472 Carrier frequency offset estimation scheme, for digital standards with MPSK modulated preamble Dec. 17, 2013
8611833 Adaptive bearer configuration for broadcast/multicast service Dec. 17, 2013
8605828 Blind mechanism for demodulating offset QPSK signals in the presence of carrier phase error Dec. 10, 2013
8605827 Timing errors Dec. 10, 2013
8605826 Multi-gigabit millimeter wave receiver system and demodulator system Dec. 10, 2013
8605824 Radio communication apparatus and radio communication method Dec. 10, 2013
8594233 Quadrature communications device with power combiner and related methods Nov. 26, 2013
8594244 Data signal phase reversal correction method and system implementing the same Nov. 26, 2013
8588343 Apparatus for calibrating amplitude and phase errors, multiport amplifier including the same, and method of amplifying the multiport amplifier Nov. 19, 2013
8576953 Identification of target signals in radio frequency pulsed environments Nov. 5, 2013
8570955 Method of grouping and mapping transmission stations in a wireless network Oct. 29, 2013
8548098 Clock-free activation circuit Oct. 1, 2013
8542779 Receiver architecture and methods for demodulating binary phase shift keying signals Sep. 24, 2013
8532228 Automatic frequency offset compensation in zero-intermediate frequency receivers using minimum-shift keying (MSK) signaling Sep. 10, 2013
8520780 Communication units, communication system and methods for modulation and demodulation Aug. 27, 2013
8514948 Channel adaptive video transmission system for use with layered video coding and methods for use therewith Aug. 20, 2013
8509358 Viterbi equalization with detection of the nearest constellation points for stage reduction Aug. 13, 2013
8509355 Method and apparatus for low power simultaneous frequency, automatic gain control and timing acquisition in radio receivers Aug. 13, 2013
RE44415 Wireless communication medium and method for operating the same Aug. 6, 2013
8483316 Modulation apparatus, modulation method, demodulation apparatus, and demodulation method Jul. 9, 2013
8477889 Estimating and filtering multiple sets of MIPS from different frequencies Jul. 2, 2013
8478222 I/Q calibration for walking-IF architectures Jul. 2, 2013
8472538 Method and apparatus for delay spread estimation Jun. 25, 2013
8467273 Leap second and daylight saving time correction for use in a radio controlled clock receiver Jun. 18, 2013
8467745 Method and system for simultaneous signal transmission on multiple selected frequencies Jun. 18, 2013
8463221 Method and system for wireless local area network (WLAN) phase shifter training Jun. 11, 2013
8457255 Method and system for applying Viterbi type PSK demodulation for optimum correlation of GPS signals Jun. 4, 2013
8451950 Method and apparatus adapted to demodulate a data signal May. 28, 2013
8446986 Method of estimating log-likelihood ratios and relative S-FSK receiver May. 21, 2013
8442144 Closed loop feedback system for improved down link performance May. 14, 2013
8442156 Adaptive IQ alignment apparatus May. 14, 2013
8428184 Transmitter, receiver, data transmission method and data reception method Apr. 23, 2013
8428183 In-phase and quadrature pattern alignment for quadrature phase shift keying optical transmitters Apr. 23, 2013
8422532 Radio communication device and response signal spreading method Apr. 16, 2013
8406346 Code error detecting device, wireless system and code error detecting method Mar. 26, 2013
8401118 Method and apparatus for constant envelope demodulation Mar. 19, 2013

1 2 3 4 5 6 7 8 9 10 11 12 13 14

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