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Class Information
Number: 375/334
Name: Pulse or digital communications > Receivers > Angle modulation > Frequency shift keying
Description: Subject matter where the carrier has been modulated by shifting its frequency in accordance with the pulses transmitted.










Sub-classes under this class:

Class Number Class Name Patents
375/336 Minimum shift keying 107
375/335 More than two frequencies 125
375/337 Separate mark and space channels 42


Patents under this class:
1 2 3 4 5 6 7 8 9

Patent Number Title Of Patent Date Issued
7376207 Apparatus for receiving and recovering frequency shift keyed symbols May. 20, 2008
7369629 FSK signal demodulation circuit May. 6, 2008
7362827 System and method for the demodulation of IFF signals Apr. 22, 2008
7336731 Demodulator with phase-adjusting function Feb. 26, 2008
7298788 Wireless communication system and method Nov. 20, 2007
7298202 FSK demodulator Nov. 20, 2007
7286615 FSK signal detector Oct. 23, 2007
7286617 Methods and apparatus for synchronization of training sequences Oct. 23, 2007
7269233 Algorithm of bit synchronization for a digital FSK correlation receiver Sep. 11, 2007
7266163 FSK demodulator slicer with fast automatic DC offset compensation Sep. 4, 2007
7263137 Multivalued FSK modulation system Aug. 28, 2007
7239625 Low-cost noise-immune wireless methodology for demand control ventilation (DCV) Applications Jul. 3, 2007
7239675 GFSK receiver Jul. 3, 2007
7218688 Data slicer May. 15, 2007
7218695 Method and device for acquiring an estimated value dependent on the maximum of a single-frequency signal May. 15, 2007
7203254 Method and system for synchronizing in a frequency shift keying receiver Apr. 10, 2007
7197279 Multiprotocol RFID reader Mar. 27, 2007
7154956 OFDM receiver for detecting FSK modulated signals Dec. 26, 2006
7145967 Signal frequency splitter and frequency shift key decoding apparatus using the same Dec. 5, 2006
7110477 Gaussian frequency shift keying digital demodulator Sep. 19, 2006
7102498 Remote keyless entry system with two modes of demodulation Sep. 5, 2006
7088790 Circuit for detecting a center level of a FSK demodulated signal to correct same Aug. 8, 2006
7079600 FSK demodulator using DLL and a demodulating method Jul. 18, 2006
7068725 Bit detection threshold in a TDMA burst communication system Jun. 27, 2006
7068740 Processing of modulated signals Jun. 27, 2006
7068739 Method and system for providing a binary demodulator Jun. 27, 2006
7061998 Methods and apparatus for downconverting signals from intermediate frequency to baseband Jun. 13, 2006
7049884 Demodulation arrangement for a radio signal May. 23, 2006
7039132 Differential detection of GFSK signal using decision feedback and preamble for carrier, clock and frame synchronization May. 2, 2006
7035352 Apparatus and method for signal acquisition in a FSK demodulator with integrated time and frequency tracking Apr. 25, 2006
7035354 CDMA multi-user detection with a real symbol constellation Apr. 25, 2006
7026864 Non-coherent FSK demodulator Apr. 11, 2006
7010063 Receiver circuit and method of processing a received signal Mar. 7, 2006
6993097 Demodulation method and demodulator for CPFSK-modulated signals Jan. 31, 2006
6990157 All-digital FSK demodulation with selectable data rate and adjustable resolution Jan. 24, 2006
6989710 Binary frequency-shift keying demodulator and frequency-to-voltage converter Jan. 24, 2006
6987816 Iris data recovery algorithms Jan. 17, 2006
6963735 Method and arrangement for receiving a frequency modulated signal Nov. 8, 2005
6954628 Radio receiver Oct. 11, 2005
6947508 Method and apparatus for estimating the frequency and/or phase of a digital signal Sep. 20, 2005
6933775 Circuit for detecting and correcting central level of FSK demodulation signal Aug. 23, 2005
6933776 Signal demodulating method of a two-phase frequency shift keying (FSK) digital demodulator Aug. 23, 2005
6931089 Phase-locked loop with analog phase rotator Aug. 16, 2005
6925170 Wire-bound telecommunication device and a circuit for use in such a device Aug. 2, 2005
6922451 Frequency shifting circuit and method Jul. 26, 2005
6914478 Demodulation method and demodulator Jul. 5, 2005
6914946 Digitally-implemented demodulator Jul. 5, 2005
6904104 Technique for demodulating a linear modulated data signal in a communications system Jun. 7, 2005
6891905 Apparatus and method for FSK demodulation with integrated time and frequency tracking May. 10, 2005
6862313 Direct conversion spread spectrum time division duplex radio Mar. 1, 2005

1 2 3 4 5 6 7 8 9










 
 
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