СПИСОК патентов США - подгруппа МПК16 H04L27/227
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| № п/п | Номер патента | Название патента | |||
2017 | |||||
| 1 | 9608844 | System and method for performing channel estimation on an OFDM signal | |||
| 2 | 9595984 | Concept for transmitting and receiving an information symbol | |||
| 3 | 9590803 | Timing error processor that uses the derivative of an interpolator function | |||
| 4 | 9577786 | Pilot symbol generation for highly-spectrally-efficient communications | |||
| 5 | 9553748 | Synchronous demodulator electronic circuit for phase modulation signals | |||
2016 | |||||
| 6 | 9520988 | Adaptation to 3-phase signal swap within a trio | |||
| 7 | 9503304 | Packet mode auto-detection in multi-mode wireless communication system, signal field transmission for the packet mode auto-detection, and gain control based on the packet mode | |||
| 8 | 9497056 | Conveying metadata by modulation of pilot carriers in COFDM broadcasting | |||
| 9 | 9491018 | Carrier phase and amplitude estimation for phase shift keying using pilots and data | |||
| 10 | 9473337 | Carrier recovery in a QAM receiver | |||
| 11 | 9467318 | Communication system, receiving device, and semiconductor device | |||
| 12 | 9467251 | Method and system for forward error correction decoding with parity check for use in low complexity highly-spectrally efficient communications | |||
| 13 | 9455855 | Phase shifter chip radio frequency self-test | |||
| 14 | 9444554 | Digital coherent receiving apparatus | |||
| 15 | 9444503 | Active signal processing personal health signal receivers | |||
| 16 | 9432231 | Digital frequency modulation receiver with frequency variation signal and demodulation method used by the same | |||
| 17 | 9426008 | Signal processing device and method | |||
| 18 | 9413518 | Clock data recovery circuit | |||
| 19 | 9405616 | Reliability metric for decoding hypothesis | |||
| 20 | 9356810 | Semiconductor integrated circuit and operating method thereof | |||
| 21 | 9325550 | Frequency-domain windowing for precision position, navigation, and timing (PNT) estimation | |||
| 22 | 9319052 | Polar receiver with reduced amplitude-phase distortion | |||
| 23 | 9306782 | Systems and methods for narrowband signal quadrature error correction | |||
| 24 | 9304535 | Baud rate phase detector with no error latches | |||
| 25 | 9281978 | Energy efficient highway addressable remote transducer soft modem | |||
| 26 | 9281977 | Apparatus and method for separating two phase-modulated signals having different amplitudes | |||
| 27 | 9253004 | Apparatus and method for signal phase control in an integrated radio circuit | |||
| 28 | 9246727 | Reception of phase-shifted signal sequences in diversity reception | |||
| 29 | 9231805 | Device for carrier phase recovery | |||
| 30 | 9231649 | Method for generating unambiguous correlation function for TMBOC(6,1,4/33) signal based on equally split partial correlation functions, apparatus for tracking TMBOC signals and satellite navigation signal receiver system | |||
2015 | |||||
| 31 | 9184965 | Energy efficient highway addressable remote transducer soft modem | |||
| 32 | 9184964 | Low symbol rate rapid carrier acquisition with extremely large frequency offset for digital communication receiver | |||
| 33 | 9184905 | Phase compensation receiver | |||
| 34 | 9154359 | Packet mode auto-detection in multi-mode wireless communication system, signal field transmission for the packet mode auto-detection, and gain control based on the packet mode | |||
| 35 | 9137070 | Apparatus and method for signal phase control in an integrated radio circuit | |||
| 36 | 9137068 | Wireless communications device having temporary correlation matrix with time inversion and related methods | |||
| 37 | 9124393 | End of communication detection | |||
| 38 | 9112595 | Transmission device, reception device, and radio communication method | |||
| 39 | 9083589 | Active signal processing personal health signal receivers | |||
| 40 | 9083588 | Polar receiver with adjustable delay and signal processing metho | |||
| 41 | 9059889 | Polar multi-symbol delay detector for carrier phase and frequency recovery for coherent transmission | |||
| 42 | 9054926 | Reception of phase-shifted signal sequences in diversity reception | |||
| 43 | 9054871 | Physical key-protected one time pad | |||
2012 | |||||
| 44 | 8159288 | Low power BPSK demodulator | |||
2011 | |||||
| 45 | 7991070 | Wavelength transmission system and method using 3-dimensional LDPC-coded modulation | |||
2008 | |||||
| 46 | 7456682 | Demodulator and phase compensation method thereof | |||
2005 | |||||
| 47 | 6959054 | Filter bank and receiver for processing continuous phase modulated signals | |||
| 48 | 6959051 | Clock regenerator for use in demodulating digital modulated signals | |||
| 49 | 6947512 | Carrier reproducing circuit | |||
| 50 | 6940923 | Demodulating device, broadcasting system, and semiconductor device | |||
| 51 | 6909738 | Method in a receiver and a receiver | |||
| 52 | 6903603 | Phase detection circuit and receiver | |||
| 53 | 6891907 | Frequency offset correction system and correction method | |||
| 54 | 6891882 | Receiver algorithm for the length 4 CFC | |||
| 55 | 6882692 | Fast transform system for an extended data rate WLAN system | |||
| 56 | 6879646 | Quadrature amplitude modulation demodulator and receiver | |||
| 57 | 6868129 | Demodulator for a radio receiver and method of operation | |||
| 58 | 6842495 | Dual mode QAM/VSB receiver | |||
2004 | |||||
| 59 | 6823181 | Universal platform for software defined radio | |||
| 60 | 6813321 | Digital demodulator | |||
| 61 | 6810097 | Carrier reproduction circuit, receiver, loop filter circuit, and oscillator circuit | |||
| 62 | 6807242 | Apparatus and a method for calculation of a correlation value corresponding to a frequency error, and a recording medium with a recorded correlation value calculation program | |||
| 63 | 6798855 | Method and arrangement for fast synchronization of two carrier signals | |||
| 64 | 6778613 | Frequency and phase estimation for MPSK signals | |||
| 65 | 6775334 | Equalization and decision-directed loops with trellis demodulation in high definition TV | |||
| 66 | 6775332 | Multi-stage receiver | |||
| 67 | 6771714 | Timing recovery using the pilot signal in high definition TV | |||
| 68 | 6765972 | Carrier synchronization type demodulator for PSK signal | |||
| 69 | 6748037 | Digital broadcasting receiver | |||
| 70 | 6741645 | Technique for minimizing decision feedback equalizer wordlength in the presence of a DC component | |||
| 71 | 6735262 | Apparatus and method of decision-directed carrier recovery based on LMS method | |||
| 72 | 6727936 | NTSC interference rejection filter | |||
| 73 | 6721366 | Phase tracking apparatus and method for continuous phase modulated signals | |||
| 74 | 6717993 | Receiver | |||
| 75 | 6704375 | Device for the homodyne reception of optically phase-keyed signals | |||
| 76 | 6704344 | Broad-brand MPSK spread spectrum communications receiver with carrier recovery and tracking using correlation techniques | |||
| 77 | 6700940 | Carrier reproduction circuit | |||
| 78 | 6700928 | Tetrahedron modem | |||
| 79 | 6697440 | Demodulator of receiver | |||
| 80 | 6697437 | Receiving apparatus | |||
| 81 | 6696900 | Method for demodulating PSK modulated signals | |||
| 82 | 6693978 | Carrier reproducing circuit | |||
| 83 | 6683921 | Received-signal absolute phasing apparatus of receiver | |||
| 84 | 6678342 | Absolute-phasing synchronization capturing circuit | |||
2003 | |||||
| 85 | 6671342 | Phase detectors in carrier recovery for offset QAM and VSB | |||
| 86 | 6650718 | Timing reproducer and demodulator comprising this | |||
| 87 | 6643321 | Method for rapid synchronization of a point to multipoint communication system | |||
| 88 | 6639953 | Apparatus and method for efficient binary phase shift key data demodulation | |||
| 89 | 6639952 | Demodulator synchronization loop lock-in detection circuit | |||
| 90 | 6636570 | Phase detection apparatus for compensating phase rotation error | |||
| 91 | 6631174 | Automatic frequency control apparatus | |||
| 92 | 6625237 | Null-pilot symbol assisted fast automatic frequency control (AFC) system for coherent demodulation of continuous phase modulation (CPM) signals and method for implementing same | |||
| 93 | 6625230 | Multi-frequency superposition receiver method | |||
| 94 | 6624691 | Demodulator for processing digital signal | |||
| 95 | 6621880 | Digital IF receiver | |||
| 96 | 6606357 | Carrier injecting waveform-based modulation scheme for reducing satellite transponder power requirements and earth terminal antenna size | |||
| 97 | 6597728 | Device and method for correcting local oscillation frequency of radio reception device according to pilot synchronous detection | |||
| 98 | 6587517 | Multi-stage receiver | |||
| 99 | 6587428 | Information record disc and information recording apparatus | |||
| 100 | 6570936 | Frequency error estimation method and system for a QPSK demodulator | |||
| 101 | 6567480 | Method and apparatus for sampling timing adjustment and frequency offset compensation | |||
| 102 | 6563858 | Method of performing antenna diversity in spread spectrum in wireless local area network | |||
| 103 | 6560298 | Method and apparatus for concurrent synchronization and improved automatic frequency control in a communication device | |||
| 104 | 6539071 | Frequency correction at the receiver end in a packet transmission system | |||
| 105 | 6532271 | Carrier recovery and doppler frequency estimation | |||
| 106 | 6526103 | Multi-stage receiver | |||
| 107 | 6522687 | Data transmitter and receiver of a DS-CDMA communication system | |||
| 108 | 6504883 | Synchronous detector | |||
| 109 | 6504867 | Digital matched filtering for signal estimation in a digital receiver | |||
2002 | |||||
| 110 | 6496547 | Digital FM receiver employing combined sample-and-hold and integrate-and-dump detectors for improved bit error rates | |||
| 111 | 6493409 | Phase detectors in carrier recovery for offset QAM and VSB | |||
| 112 | 6493396 | Phase shift key burst receiver having improved phase resolution and timing and data recovery | |||
| 113 | 6480150 | Autonomous hardwired tracking loop coprocessor for GPS and WAAS receiver | |||
| 114 | 6466086 | Quadrature demodulator with phase-locked loop | |||
| 115 | 6463106 | Receiver with adaptive processing | |||
| 116 | 6456671 | Decision feedback phase tracking demodulation | |||
| 117 | 6452376 | Method of estimating the carrier frequency of a phase-modulated digital signal | |||
| 118 | 6449470 | Method and device for estimating the frequency offset in a signal received by a mobile-telephone demodulator | |||
| 119 | 6438164 | Technique for minimizing decision feedback equalizer wordlength in the presence of a DC component | |||
| 120 | 6434091 | Information record disc and information recording apparatus | |||
| 121 | 6426982 | Low complexity multiple bits matched filter | |||
| 122 | 6421399 | Frequency and phase estimation for MPSK signals | |||
| 123 | 6411661 | Digital timing recovery loop for GMSK demodulators | |||
| 124 | 6411659 | Timing recovery using the pilot signal in high definition TV | |||
| 125 | 6411658 | Demodulation device | |||
| 126 | 6404827 | Method and apparatus for linear predicting | |||
| 127 | 6396866 | Symmetric chirp communications acquisition method and apparatus | |||
| 128 | 6389082 | Receiver | |||
| 129 | 6381288 | Method and apparatus for recovering data from a differential phase shift keyed signal | |||
| 130 | 6377616 | Calibration of n-port receivers | |||
| 131 | 6370208 | Correlator for CDMA applications | |||
| 132 | 6363126 | Demodulator | |||
| 133 | 6353358 | Quadrature demodulation circuit with a pseudo locked state detection system | |||
| 134 | 6344871 | NTSC interference rejection filter | |||
| 135 | 6341023 | Multiple level modulation in a wavelength-division multiplexing (WDM) systems | |||
2001 | |||||
| 136 | 6334203 | Error detecting method and device and signal demodulating method and device | |||
| 137 | 6317452 | Method and apparatus for wireless spread spectrum communication with preamble sounding gap | |||
| 138 | 6307898 | Phase error detector | |||
| 139 | 6304592 | Coherent detection using matched filter enhanced spread spectrum demodulation | |||
| 140 | 6301311 | Non-coherent, non-data-aided pseudo-noise synchronization and carrier synchronization for QPSK or OQPSK modulated CDMA system | |||
| 141 | 6297691 | Method and apparatus for demodulating coherent and non-coherent modulated signals | |||
| 142 | 6285721 | Method for assisting simple synchronization to the carrier of a dispersed-energy QPSK signal | |||
| 143 | 6282246 | Frequency modulation method and modem unit employing such method | |||
| 144 | 6278725 | Automatic frequency control loop multipath combiner for a rake receiver | |||
| 145 | 6278403 | Autonomous hardwired tracking loop coprocessor for GPS and WAAS receiver | |||
| 146 | 6263011 | Receiver for spread spectrum communication system capable of shortening acquisition time | |||
| 147 | 6246715 | Data transmitter and receiver of a DS-CDMA communication system | |||
| 148 | 6240147 | Auto frequency control apparatus | |||
| 149 | 6232761 | Frequency estimating system | |||
| 150 | 6226323 | Technique for minimizing decision feedback equalizer wordlength in the presence of a DC component | |||
| 151 | 6222891 | Timing recovery using the pilot signal in high definition TV | |||
| 152 | 6219374 | Structure of a coherent dual channel QPSK transceiver using pilot symbols in a code division multiple access system | |||
| 153 | 6219088 | NTSC interference rejection filter | |||
| 154 | 6218896 | Vectored demodulation and frequency estimation apparatus and method | |||
| 155 | 6215830 | Carrier control loop for a receiver of digitally transmitted signals | |||
| 156 | 6208201 | Recovery of a carrier signal from a modulated input signal | |||
| 157 | 6195400 | Two-mode demodulating apparatus | |||
| 158 | 6192091 | Circuit for reproducing a clock from a multilevel QAM signal | |||
| 159 | 6191649 | Quadrature demodulator and method for quadrature demodulation | |||
2000 | |||||
| 160 | 6163276 | System for remote data collection | |||
| 161 | 6163208 | One bit digital phase shift keyed carrier recovery and demodulator circuit | |||
| 162 | 6160858 | MSK signal processing in a GPS correlator channel | |||
| 163 | 6157686 | Diversity apparatus with improved ability of reproducing carrier wave in synchronous detection | |||
| 164 | 6157683 | Method and system for automatic invariancy compensation in digital communication receivers | |||
| 165 | 6154483 | Coherent detection using matched filter enhanced spread spectrum demodulation | |||
| 166 | 6148040 | Precoded gaussian minimum shift keying carrier tracking loop | |||
| 167 | 6125151 | Carrier recovery circuit | |||
| 168 | 6122328 | Fast-acting Costas loop | |||
| 169 | 6104237 | Method for estimating phase in demodulator | |||
| 170 | 6097768 | Phase detector for carrier recovery in a DQPSK receiver | |||
| 171 | 6085351 | Synchronization method | |||
| 172 | 6078578 | Communication apparatus | |||
| 173 | 6072992 | High-frequency device | |||
| 174 | 6072842 | Carrier-recovery loop with stored initialization in a radio receiver | |||
| 175 | 6055281 | Passband DQPSK detector for a digital communications receiver | |||
| 176 | 6055280 | High data rate digital demodulator and bit synchronizer | |||
| 177 | 6052571 | Tuner for PSK or PAM data applications | |||
| 178 | 6052410 | Transmission apparatus, reception apparatus and communication apparatus as well as modem signal transmission and reception method | |||
| 179 | 6023491 | Demodulation apparatus performing different frequency control functions using separately provided oscillators | |||
| 180 | 6016328 | Method and apparatus for the synchronization of a signal receiving station | |||
1999 | |||||
| 181 | 6005889 | Pseudo-random noise detector for signals having a carrier frequency offset | |||
| 182 | 6002723 | Digital receiver having programmable complex threshold detectors and threshold interpreters | |||
| 183 | 5991342 | Frequency error detector | |||
| 184 | 5982200 | Costas loop carrier recovery circuit using square-law circuits | |||
| 185 | 5970105 | Apparatus and method for efficient wireless communications in the presence of frequency error | |||
| 186 | 5963600 | Micro-controller based frequency calibration | |||
| 187 | 5963586 | Method and apparatus for parallel noncoherent correlation of a spread spectrum signal | |||
| 188 | 5956375 | Fast-acting Costas loop | |||
| 189 | 5953370 | Apparatus for receiving and correlating a spread spectrum signal | |||
| 190 | 5949823 | Data communication system and radio IC card system | |||
| 191 | 5943380 | Robust phase estimator and recoverer for digital signals affected in particular by phase jitter | |||
| 192 | 5937013 | Subharmonic quadrature sampling receiver and design | |||
| 193 | 5933059 | Method and apparatus for controlling frequency synchronization in a radio telephone | |||
| 194 | 5930306 | Device for correcting phase noise in a digital receiver | |||
| 195 | 5920555 | Pilot assisted direct sequence spread spectrum synchronization apparatus | |||
| 196 | 5912930 | Phase shift keying signal demodulation method and device | |||
| 197 | 5909148 | Carrier phase synchronizing circuit | |||
| 198 | 5905762 | Receiver synchronization using punctured preamble | |||
| 199 | 5898699 | Digital broadcast receiver and signal level display method | |||
| 200 | 5894499 | Direct conversion receiver having filter with cut-off frequency switching means | |||
| 201 | 5883930 | Digital PLL circuit and actuating method | |||
| 202 | 5881111 | Frequency sweep circuit | |||
| 203 | 5881100 | Method and apparatus for coherent correlation of a spread spectrum signal | |||
| 204 | 5878090 | Receiver synchronization using punctured preamble | |||
| 205 | 5867059 | Demodulating system for MSK and GMSK signal using a fast fourier transform converter | |||
| 206 | 5861773 | Circuit for detecting the locked condition of PSK or QAM | |||
| 207 | 5857003 | Digital radio having improved modulation and detection processes | |||
| 208 | 5856998 | Method and apparatus for correlating a continuous phase modulated spread spectrum signal | |||
1998 | |||||
| 209 | 5844948 | System and method for digital tracking and compensation of frequency offset error in a satellite receiver | |||
| 210 | 5838736 | Method and apparatus for generating carriers for phase demodulation having at least two phase states, and a corresponding demodulation stage | |||
| 211 | 5832044 | Transmitter antenna diversity and fading-resistant modulation for wireless communication systems | |||
| 212 | 5832028 | Method and apparatus for coherent serial correlation of a spread spectrum signal | |||
| 213 | 5828709 | Apparatus and method for improving stability of transmitting frequency by using costas loop section in communication system of half duplex transmitting method | |||
| 214 | 5828692 | Baseband demodulator for polar or rectangular modulated signal in a cordless spread spectrum telephone | |||
| 215 | 5825807 | System and method for multiplexing a spread spectrum communication system | |||
| 216 | 5822366 | Transceiver and method for generating and processing complex I/Q-signals | |||
| 217 | 5821782 | Frequency synthesis using a remodulator | |||
| 218 | 5818297 | Digital demodulator for a phase-modulated signal | |||
| 219 | 5815535 | Carrier recovery apparatus | |||
| 220 | 5812608 | Method and circuit arrangement for processing received signal | |||
| 221 | 5809084 | Data receiving in a digital mobile communication | |||
| 222 | 5809009 | Demodulator apparatus for digital radio communication receiver providing pseudo-coherent quadrature demodulation based on periodic estimation of frequency offset | |||
| 223 | 5790602 | Receiver synchronization using punctured preamble | |||
| 224 | 5774512 | Higher order digital phase loop filter | |||
| 225 | 5768323 | Symbol synchronizer using modified early/punctual/late gate technique | |||
| 226 | 5768321 | Automatic frequency control unit which detects a frame pattern in a phase modulation signal | |||
| 227 | 5768319 | GPS data collection in high noise-to-signal ratio environments | |||
| 228 | 5767738 | Apparatus and method for demodulating a modulated signal | |||
| 229 | 5761210 | Signal processing apparatus and method | |||
| 230 | 5757847 | Method and apparatus for decoding a phase encoded signal | |||
| 231 | 5754585 | Method and apparatus for serial noncoherent correlation of a spread spectrum signal | |||
| 232 | 5754584 | Non-coherent spread-spectrum continuous-phase modulation communication system | |||
| 233 | 5751776 | Receiver for a digital communication system | |||
| 234 | 5740202 | Method and apparatus for digitally evaluating the phase of a modulated carrier | |||
| 235 | 5734972 | Automatic frequency controller | |||
| 236 | 5727030 | Automatic frequency control circuit applicable to a mobile communication system | |||
| 237 | 5727028 | Method and apparatus for receiving a signal in a digital radio frequency communication system | |||
| 238 | 5717715 | Signal processing apparatus and method | |||
| 239 | 5706313 | Soft decision digital communication method and apparatus | |||
1997 | |||||
| 240 | 5703526 | Circuit for detecting the locked condition of PSK or QAM demodulators | |||
| 241 | 5699385 | Method and apparatus for locating and tracking a QPSK carrier | |||
| 242 | 5692020 | Signal processing apparatus and method | |||
| 243 | 5692014 | Subsampled carrier recovery for high data rate demodulators | |||
| 244 | 5692007 | Method and apparatus for differential phase encoding and decoding in spread-spectrum communication systems with continuous-phase modulation | |||
| 245 | 5680414 | Synchronization apparatus and method for spread spectrum receiver | |||
| 246 | 5668831 | Signal processing apparatus and method | |||
| 247 | 5668749 | Circuit for performing arithmetic operations in a demodulator | |||
| 248 | 5659574 | Multi-bit correlation of continuous phase modulated signals | |||
| 249 | 5659573 | Method and apparatus for coherent reception in a spread-spectrum receiver | |||
| 250 | 5656971 | Phase demodulator having reliable carrier phase synchronization | |||
| 251 | 5655090 | Externally controlled DSP with input/output FIFOs operating asynchronously and independently of a system environment | |||
| 252 | 5652769 | Costas loop and data identification apparatus | |||
| 253 | 5648986 | Receiver in digital radio communication device with selective equalization | |||
| 254 | 5648982 | Spread spectrum transmitter | |||
| 255 | 5640425 | Fast-acting costas loop | |||
| 256 | 5640125 | Digital PSK-type demodulator having clock recovery before carrier recovery | |||
| 257 | 5635864 | Comparator circuit | |||
| 258 | 5629956 | Method and apparatus for reception and noncoherent serial correlation of a continuous phase modulated signal | |||
| 259 | 5627856 | Method and apparatus for receiving and despreading a continuous phase-modulated spread spectrum signal using self-synchronizing correlators | |||
| 260 | 5625652 | Timing recovery controller and method for adjusting the timing of synchronizing windows in a PSK demodulator | |||
| 261 | 5621755 | CMOS technology high speed digital signal transceiver | |||
| 262 | 5619524 | Method and apparatus for coherent communication reception in a spread-spectrum communication system | |||
| 263 | 5614861 | N-phase modulated signal demodulation system with carrier reproduction | |||
| 264 | 5610949 | Phase detector and a method determining the phase of received PSK symbols | |||
| 265 | 5610940 | Method and apparatus for noncoherent reception and correlation of a continous phase modulated signal | |||
| 266 | 5602881 | Receiver for a digital communication system | |||
| 267 | 5594758 | Frequency controller and method of correcting phase estimates in a PSK demodulator using frequency control | |||
1996 | |||||
| 268 | 5586148 | Coherent detection system | |||
| 269 | 5579347 | Digitally compensated direct conversion receiver | |||
| 270 | 5568521 | Phase lock indicator circuit for a high frequency recovery loop | |||
| 271 | 5566211 | Automatic frequency control method and apparatus therefor | |||
| 272 | 5563537 | Frequency-controlled circuit | |||
| 273 | 5550871 | Satellite communication receiving apparatus | |||
| 274 | 5548619 | Radio receiver apparatus of orthogonal detection type comprising local oscillator means with improved automatic frequency control arrangement | |||
| 275 | 5548618 | Device for detecting BPSK modulated singular words suitable for a TDMA analog modem and detection method used therein | |||
| 276 | 5544200 | Acquisition of carrier phase and symbol timing through joint estimation of phase and timing adjustments | |||
| 277 | 5533059 | Carrier phase lock detecting apparatus used in PSK-modulated signal receiver for satellite communication system | |||
| 278 | 5528633 | Tuner with quadrature downconverter for pulse amplitude modulated data applications | |||
| 279 | 5524127 | Unique word detector and method for detecting a unique word within one of several windows offset in time | |||
| 280 | 5504453 | Method and device for estimating phase error | |||
| 281 | 5500877 | Receiver for a superpose modulated signal | |||
| 282 | 5499273 | Method and apparatus for symbol clock recovery from signal having wide frequency possibilities | |||
| 283 | 5497402 | Automatic frequency control device for satellite communications ground system | |||
| 284 | 5497400 | Decision feedback demodulator with phase and frequency estimation | |||
| 285 | 5490176 | Detecting false-locking and coherent digital demodulation using the same | |||
| 286 | 5485489 | Carrier recovery circuit for offset QPSK demodulators | |||
1995 | |||||
| 287 | 5450447 | Adaptive variable-gain phase and frequency locked loop for rapid carrier acquisition | |||
| 288 | 5446771 | Adaptive coherent signal detection method and apparatus | |||
| 289 | 5440266 | Demodulating apparatus having quick pull-in synchronization facility at instantaneous disconnection of input signal | |||
| 290 | 5438594 | Device for demodulating digital signals modulated by an alternating modulation constellation technique | |||
| 291 | 5432521 | Satellite receiver system having doppler frequency shift tracking | |||
| 292 | 5425057 | Phase demodulation method and apparatus using asynchronous sampling pulses | |||
| 293 | 5424688 | Frequency synthesizer apparatus incorporating phase modulation tracking means | |||
| 294 | 5423085 | Method and apparatus for digital automatic frequency control of TDM communications systems | |||
| 295 | 5422909 | Method and apparatus for multi-phase component downconversion | |||
| 296 | 5416803 | Process for digital transmission and direct conversion receiver | |||
| 297 | 5400363 | Quadrature compensation for orthogonal signal channels | |||
| 298 | 5399987 | Bi-phase shift keying signal demodulation circuit for RDS receiver | |||
1994 | |||||
| 299 | 5376894 | Phase estimation and synchronization using a PSK demodulator | |||
| 300 | 5365185 | Frequency controlled loop for demodulating OOK and PSK signals | |||
| 301 | 5363415 | Carrier regenerating device correctly operable in mobile satellite communication | |||
| 302 | 5361400 | Apparatus and method for removing distortion in a received signal | |||
| 303 | 5347228 | BPSK demodulator using compound phase-locked loop | |||
| 304 | 5341402 | Automatic frequency control method and device for use in receiver | |||
| 305 | 5341105 | Quadratore demodulator circuit utilizing automatic frequency control signal and method thereof | |||
| 306 | 5325401 | L-band tuner with quadrature downconverter for PSK data applications | |||
| 307 | 5317598 | Portable test receiver for remote monitoring system | |||
| 308 | 5307021 | Phase-error detecting circuit for QDPSK demodulator | |||
| 309 | 5299231 | Method and device for estimating the carrier frequency of a modulated data signal | |||
| 310 | 5289506 | Automatic frequency control circuit | |||
| 311 | 5278514 | MSK demodulator using one synchronous detector | |||
1993 | |||||
| 312 | 5260975 | Digital demodulator | |||
| 313 | 5255086 | Method and apparatus for RF data transfer in a CATV system | |||
| 314 | 5251324 | Method and apparatus for generating and collecting viewing statistics for remote terminals in a cable television system | |||
| 315 | 5241545 | Apparatus and method for recovering a time-varying signal using multiple sampling points | |||
| 316 | 5235612 | Method and apparatus for cancelling spread-spectrum noise | |||
| 317 | 5233631 | Device for recovering a carrier wave provided with a circuit for inhibiting dummy frequency acquisitions | |||
| 318 | 5229997 | Carrier recovery control with sequential FEC sync detection and frame sync detection | |||
| 319 | 5225902 | Automatic frequency selection in a bi-directional cable television system | |||
| 320 | 5214390 | Method and apparatus for partial response demodulation | |||
| 321 | 5208829 | Communication satellite system having an increased power output density per unit of bandwidth | |||
| 322 | 5203030 | Satellite transmission capturing method for GPS receiver | |||
| 323 | 5202643 | Demodulator for demodulating a .pi./4-shift DQPSK signal | |||
| 324 | 5195108 | System and method for determining absolute phase of a differentially-encoded, phase-modulated signal | |||
| 325 | 5189564 | Magnetic recording/reproducing method and apparatus | |||
| 326 | 5185765 | High speed data communication system using phase shift key coding | |||
| 327 | 5182760 | Demodulation system for phase shift keyed modulated data transmission | |||
| 328 | 5182749 | Receiver for recovering data in a forward and reverse direction in time | |||
| 329 | 5179578 | Coherent demodulator for .pi./4 shifted QPSK signal | |||
1992 | |||||
| 330 | 5170131 | Demodulator for demodulating digital signal modulated by minimum shift keying and method therefor | |||
| 331 | 5163159 | Dual mode automatic frequency control | |||
| 332 | 5157694 | Coherent PSK demodulator using bit error rate and S/N ratio to establish synchronization | |||
| 333 | 5155590 | System for data channel level control | |||
| 334 | 5150384 | Carrier recovery method and apparatus having an adjustable response time determined by carrier signal parameters | |||
| 335 | 5150070 | Demodulator for biphase, suppressed-carrier PSK signals | |||
| 336 | 5148451 | Carrier regeneration device correctly operable in mobile satellite communication | |||
| 337 | 5142690 | Cable television radio frequency data processor | |||
| 338 | 5121071 | Lock detector for unbalanced QPSK demodulators | |||
| 339 | 5113415 | Detection of a particular signal sequence with no adverse influence of multipath transmission | |||
| 340 | 5105435 | Method and apparatus for cancelling spread-spectrum noise | |||
| 341 | 5093846 | Signal acquisition using modulation by a preselected code group | |||
| 342 | 5090028 | Method of and apparatus for synchronization by means of correlation | |||
| 343 | 5090027 | Coherent PSK demodulator with adaptive line enhancer | |||
| 344 | 5090025 | Token ring synchronization | |||
| 345 | 5086241 | Costas loop carrier wave reproducing circuit | |||
| 346 | 5081652 | Offset correction | |||
1991 | |||||
| 347 | 5067139 | Coherent detector for QPSK modulation in a TDMA system | |||
| 348 | 5065107 | Phase-locked loop bandwidth switching demodulator for suppressed carrier signals | |||
| 349 | 5063387 | Doppler frequency compensation circuit | |||
| 350 | 5058136 | Coherent detection for QPSK modulation | |||
| 351 | 5056115 | Device for the division, at an optimum sampling rate, of a passband signal into its components on two carriers in quadrature | |||
| 352 | 5050176 | Direct modulation phase-shift-keying system and method | |||
| 353 | 5049830 | Carrier recovery system and digital phase demodulator | |||
| 354 | 5042052 | Carrier acquisition scheme for QAM and QPSK data | |||
| 355 | 5036296 | Frequency tracking circuit using samples equalized at different sampling instants of same clock period | |||
| 356 | 5031197 | Timing error detector | |||
| 357 | 5025455 | Phase ambiguity resolution for offset QPSK modulation systems | |||
| 358 | 5012491 | Preamable detection circuit for digital communications system | |||
| 359 | 4993048 | Self-clocking system | |||
1990 | |||||
| 360 | 4977580 | Timing and carrier recovery in TDMA without preamble sequence | |||
| 361 | 4961206 | Data modem system | |||
| 362 | 4958360 | Circuit for recovering the carrier in digital transmission systems | |||
| 363 | 4949357 | Synchronizing circuit for offset quaternary phase shift keying | |||
| 364 | 4949356 | PCM receiver with lock state control | |||
| 365 | 4947409 | Apparatus for correcting frequency in a coherent receiver | |||
| 366 | 4941199 | Uplink power control mechanism for maintaining constant output power from satellite transponder | |||
| 367 | 4940951 | Phase lock recovery apparatus for phase locked loop circuit | |||
| 368 | 4937841 | Method and circuitry for carrier recovery for time division multiple access radio systems | |||
| 369 | 4933958 | Method for receiving carrier oscillations modulated with a useful signal | |||
| 370 | 4933952 | Asynchronous digital correlator and demodulators including a correlator of this type | |||
| 371 | 4933782 | Digital phase lock device | |||
| 372 | 4932070 | Mechanism for deriving accurate frequency reference for satellite communications burst demodulator | |||
| 373 | 4922506 | Compensating for distortion in a communication channel | |||
| 374 | 4920278 | Phase comparator | |||
| 375 | 4918393 | Phase control device | |||
| 376 | 4916405 | Smart sweep apparatus for data rate receivers | |||
| 377 | 4901332 | Noncoherent-coherent A.C. coupled base band AGC receiver | |||
| 378 | 4896336 | Differential phase-shift keying demodulator | |||
| 379 | 4894845 | Receiver for a phase-shift keyed carrier signal | |||
| 380 | 4894841 | Digital direct-sequence spread-spectrum modem | |||
1989 | |||||
| 381 | 4890302 | Circuit for extracting carrier signals | |||
| 382 | 4887050 | Frequency control apparatus and method for a digital radio receiver | |||
| 383 | 4887042 | High speed multi-channel phase detector | |||
| 384 | 4879728 | DPSK carrier acquisition and tracking arrangement | |||
| 385 | 4871975 | Carrier recovery circuit for offset QPSK demodulators | |||
| 386 | 4871974 | Coherent phase shift keyed demodulator | |||
| 387 | 4871973 | Demodulator including sweep controller for controlling synchronization capture range | |||
| 388 | 4870660 | Variable frequency rate receiver | |||
| 389 | 4868896 | Optical superheterodyne receiver for, in particular, phase-shift modulated light | |||
| 390 | 4866734 | Receiver for spread spectrum communication | |||
| 391 | 4860321 | Lock detector for feedback loops | |||
| 392 | 4860320 | Method for recovering a control signal for controlling the phase of a local carrier signal | |||
| 393 | 4860319 | Apparatus for compensating for phase hits | |||
| 394 | 4860318 | PSK detection using an IFM receiver | |||
| 395 | 4859959 | Data demodulator carrier phase error detector | |||
| 396 | 4856027 | Carrier recovery phase-locked loop | |||
| 397 | 4853642 | Phase controlled demodulator for digital communications system | |||
| 398 | 4847872 | Method and arrangement for synchronizing a receiver in digital transmission systems | |||
| 399 | 4847578 | Method and device for detecting false locks between a reference signal and a signal to be demodulated by coherent digital demodulation | |||
| 400 | 4843616 | Method of obtaining a phase difference signal | |||
| 401 | 4841470 | Surface acoustic wave device for differential phase shift keying convolving | |||
| 402 | 4837786 | Technique for mitigating rain fading in a satellite communications system using quadrature phase shift keying | |||
| 403 | 4835790 | Carrier-to-noise detector for digital transmission systems | |||
| 404 | 4833416 | QPSK/BPSK demodulator | |||
| 405 | 4829260 | Phase-shift keyed carrier recovery | |||
| 406 | 4814719 | Unsymmetrical QPSK demodulator | |||
| 407 | 4811363 | Method for recovering a phase difference signal | |||
| 408 | 4807254 | Carrier wave recovery system | |||
| 409 | 4803438 | 8-phase phase-shift keying demodulator | |||
| 410 | 4800576 | Convolution data recovery circuit | |||
| 411 | 4795986 | Method and circuit for carrier synchronism recovery in PSK coherent demodulators | |||
1988 | |||||
| 412 | 4787096 | Second-order carrier/symbol sychronizer | |||
| 413 | 4780887 | Carrier recovery circuitry immune to interburst frequency variations | |||
| 414 | 4774716 | Method for the transmission of digital data | |||
| 415 | 4773083 | QPSK demodulator | |||
| 416 | 4769816 | Qpsk demodulator | |||
| 417 | 4764940 | Modem for RF subscriber telephone system | |||
| 418 | 4764730 | Radio receiver demodulation system | |||
| 419 | 4757272 | Four phase PSK demodulator | |||
| 420 | 4744094 | BPSK demodulator with D type flip/flop | |||
| 421 | 4742533 | Soft decision digital communication apparatus | |||
| 422 | 4742532 | High speed binary data communication system | |||
| 423 | 4740997 | Band clock offset phase locked loop | |||
| 424 | 4730344 | Quadrature-quadrature phase shift keying with constant envelope | |||
1987 | |||||
| 425 | 4713630 | BPSK Costas-type PLL circuit having false lock prevention | |||
| 426 | 4712221 | Carrier recovery of modulated signals | |||
| 427 | 4706263 | Data communications receiver operable in highly stressed environments | |||
| 428 | 4704582 | Gated demodulator for shaped BPSK signals | |||
| 429 | 4700363 | Data communication method and apparatus | |||
| 430 | 4694204 | Transistor circuit for signal multiplier | |||
| 431 | 4691318 | Data transmission system with error correcting data encoding | |||
| 432 | 4689806 | Receiver mode control for acquiring and tracking a signal | |||
| 433 | 4687999 | Circuit for recovering the carrier wave in digital transmission systems | |||
| 434 | 4686689 | Phase-locked loop circuit | |||
| 435 | 4682118 | Phase shift keying and phase modulation transmission system | |||
| 436 | 4682117 | Quadrature demodulation data receiver with phase error correction | |||
| 437 | 4680778 | Fast acquisition circuit for synchronous digital receiver operating in wideband noise | |||
| 438 | 4680777 | Quadrature-quadrature phase shift keying | |||
| 439 | 4680775 | Device for coding-decoding a binary digital signal bit stream for an "OQPSK" digital modulator-demodulator with four phase states | |||
| 440 | 4675883 | Arrangement for Carrier Recovery from Two Received Phase Shift Keyed Signals | |||
| 441 | 4672632 | Optimized communications system and method employing channel synthesis and phase lock detection | |||
| 442 | 4670887 | Multiplexed PSK demodulator | |||
| 443 | 4667334 | System for broadcasting data packets originating from different sources | |||
| 444 | 4663768 | Diversity system of selection type equipped with a code correction/switch circuit for receiving a PSK or QAM wave carrying differentially encoded signal | |||
| 445 | 4654864 | Phase synchronizing circuit | |||
| 446 | 4653071 | Carrier recovery circuit for PSK communication system | |||
| 447 | 4652838 | Phase randomization to reduce detectability of phase or frequency-modulated digital signals | |||
| 448 | 4652834 | Rapid acquisition demodulation system | |||
| 449 | 4644561 | Modem for RF subscriber telephone system | |||
| 450 | 4642573 | Phase locked loop circuit for demodulating suppressed carrier signals | |||
| 451 | 4641325 | Receiver for phase shift modulated carrier signals | |||
| 452 | 4641323 | Multi-phase PSK demodulator | |||
| 453 | 4639939 | Apparatus for cancelling periodic carrier phase jitters | |||
| 454 | 4639682 | Carrier reproducing circuit for phase shift keying signals | |||
| 455 | 4635279 | Arrangement for coherently generating sinusoids of different frequencies, and angle modulation data receiver using the arrangement | |||
1986 | |||||
| 456 | 4631738 | Gain tracker for digital modem | |||
| 457 | 4628507 | Bit error detection circuit for PSK-modulated carrier wave | |||
| 458 | 4627079 | Method and apparatus for acquiring and tracking a communications signal | |||
| 459 | 4626911 | Digital data recovery circuit | |||
| 460 | 4622683 | Fast acquisition ringing filter MSK demodulator | |||
| 461 | 4614910 | Quarternary differential PSK demodulator | |||
| 462 | 4594727 | Synchronous receiver | |||
| 463 | 4592075 | Phase-shift keying demodulator | |||
| 464 | 4592071 | Recovery of carrier and clock frequencies in a phase or amplitude state modulation and coherent demodulation digital transmission system | |||
| 465 | 4592009 | MSK surface acoustic wave convolver | |||
| 466 | 4591797 | PSK demodulator having an AFC circuit | |||
| 467 | 4585998 | Method and device for coherent demodulation of a digitally modulated carrier | |||
| 468 | 4584652 | Apparatus and method for determining in-phase and quadrature-phase components | |||
| 469 | 4583238 | Synchronous data transmission system using a carrier modulated by an envelope of constant amplitude | |||
| 470 | 4583048 | MSK digital demodulator for burst communications | |||
| 471 | 4581586 | Crosstalk reduction in unbalanced QPSK detectors | |||
| 472 | 4580102 | Utilizing carrier construction | |||
| 473 | 4575684 | Differential phase shift keying receiver | |||
| 474 | 4571731 | PSK modem filter switch | |||
| 475 | 4570125 | FSK Demodulator with concurrent carrier and clock synchronization | |||
| 476 | 4569061 | Phase distortion adaptive detector of minimum shift keying data | |||
1985 | |||||
| 477 | 4559634 | PSK Modem having dual-integrator voltage controlled oscillator | |||
| 478 | 4559499 | Direct microwave demodulator of PSK signals with automatic gain control | |||
| 479 | 4555667 | Synchronous digital QPSK demodulator with carrier error correction | |||
| 480 | 4549142 | Phase demodulator including variable phase shifter for controlling reference carrier | |||
| 481 | 4547738 | Phase shift demodulator | |||
| 482 | 4547736 | Phase lock loop PSK demodulator with sweep control circuit | |||
| 483 | 4542347 | Demodulator circuit with integrated automatic gain control | |||
| 484 | 4540948 | 8-Phase phase-shift keying demodulator | |||
| 485 | 4539524 | Method and coherent demodulators for MSK signal | |||
| 486 | 4538282 | Integrated circuit PSK modem phase locked loop | |||
| 487 | 4538120 | Carrier recovery loop for reception of quadraphase shift keyed signals | |||
| 488 | 4538111 | Circuit recovering the carrier of a signal amplitude and phase modulated by digital signals | |||
| 489 | 4531224 | Low signal-to-noise ratio symbol synchronizer | |||
| 490 | 4527278 | Method for correcting the frequency of a local carrier in a receiver of a data transmission system and receiver using this method | |||
| 491 | 4527275 | Correlation data communications system | |||
| 492 | 4525676 | PSK Demodulation system having carrier frequency variation compensation | |||
| 493 | 4519084 | Matched filter for combating multipath fading | |||
| 494 | 4519083 | Bilateral digital data transmission system | |||
| 495 | 4507617 | Carrier recovery circuit for a PSK modulated signal | |||
| 496 | 4503545 | System for evaluating transmission line impairments | |||
| 497 | 4501002 | Offset QPSK demodulator and receiver | |||
| 498 | 4491805 | BPSK And QPSK transmission systems having phase locked loop for regenerating the carrier wave | |||
1984 | |||||
| 499 | 4484337 | Carrier wave regenerating circuit | |||
| 500 | 4481658 | FM-broadcasting system with transmitter identification by binary phase-modulated, differentially coded code signal | |||
| 501 | 4479253 | Phaselock receiver with input signal measuring capability | |||
| 502 | 4475218 | Carrier-recovery circuit | |||
| 503 | 4475217 | Receiver for phase-shift modulated carrier signals | |||
| 504 | 4472817 | Non-PLL concurrent carrier clock synchronization | |||
| 505 | 4470145 | Single sideband quadricorrelator | |||
| 506 | 4462109 | Receiver for phase-shift modulated carrier signals | |||
| 507 | 4461014 | Carrier regenerating circuit | |||
| 508 | 4458356 | Carrier recovery circuit | |||
| 509 | 4455680 | Method and apparatus for receiving and tracking phase modulated signals | |||
| 510 | 4450573 | Bit data operated squelch | |||
| 511 | 4445224 | Pull-in circuit for a digital phase locked loop | |||
| 512 | 4445094 | SMSK And MSK demodulator | |||
| 513 | 4439863 | Partial response system with simplified detection | |||
| 514 | 4439737 | Phase locked loop, as for MPSK signal detector | |||
| 515 | 4438355 | Phase canceller for carrier recovery network | |||
| 516 | 4426711 | Process for the transmission of service signals for a digital radio beam, as well as transmitter and receiver for using such a process | |||
1983 | |||||
| 517 | 4423390 | Side lock avoidance network for PSK demodulator | |||
| 518 | 4420723 | Phase locked loop amplifier for variable amplitude radio waves | |||
| 519 | 4419759 | Concurrent carrier and clock synchronization for data transmission system | |||
| 520 | 4409562 | Phase correction circuit employing bandpass filters | |||
| 521 | 4394626 | Phase synchronizing circuit | |||
| 522 | 4392232 | Simplified transversal correlator for MSK and MSK related waveforms | |||
| 523 | 4389616 | Method and arrangement for the digital regulation of the carrier phase error in receivers of data transmission systems | |||
| 524 | 4387342 | Phase-shift keyed decoder | |||
| 525 | 4384357 | Self-synchronization circuit for a FFSK or MSK demodulator | |||
| 526 | 4383324 | Digital data transmission systems | |||
| 527 | 4380081 | Digital receiver for four-phase-modulated carrier | |||
| 528 | 4368542 | Phase canceller for carrier recovery network | |||
1982 | |||||
| 529 | 4362997 | Quadriphase differential demodulator | |||
| 530 | 4355404 | Carrier recovery network for QPSK modems employing synchronized oscillators | |||
| 531 | 4355401 | Radio transmitter/receiver for digital and analog communications system | |||
| 532 | 4352199 | Method and device for detecting and interpreting a distress signal | |||
| 533 | 4352192 | Timing signal synchronization device | |||
| 534 | 4348641 | Digital baseband carrier recovery circuit | |||
| 535 | 4346472 | Method and apparatus for eliminating double bit errosion in a differential phase shift keying system | |||
| 536 | 4344178 | Costas loop QPSK demodulator | |||
| 537 | 4344041 | Biphase detector | |||
| 538 | 4339725 | Synchronous demodulator for multi-phase PSK signal | |||
| 539 | 4338574 | Carrier recovering circuit for phase modulated signal | |||
| 540 | 4336500 | MSK Demodulator frequency acquistion apparatus and method | |||
| 541 | 4330863 | Demodulator arrangement | |||
| 542 | 4328587 | Phase slip detector and systems employing the detector | |||
| 543 | 4328576 | Wide band demodulator of phase modulated signals | |||
| 544 | 4327439 | Method for generating modem transmission signals with quadrature amplitude modulation | |||
| 545 | 4324001 | Synchronizer for MSK burst communications | |||
| 546 | 4320499 | System for multi-level data transmission by means of an angle-modulated carrier having a constant amplitude | |||
| 547 | 4317206 | On line quality monitoring | |||
| 548 | 4314206 | Noise chopper for preventing false locks in a coherent carrier recovery system | |||
| 549 | 4313219 | Receiver for high frequency electromagnetic oscillations having a frequency readjustment | |||
| 550 | 4313205 | Carrier synchronization and symbol synchronization for offset-QPSK burst communications | |||
| 551 | 4310803 | Bandpass filter circuit | |||
1981 | |||||
| 552 | 4308503 | Phase shift keyed demodulator using recovered carrier with controlled phase offset | |||
| 553 | 4302844 | Carrier transmission through harmonic polluted medium | |||
| 554 | 4302842 | Digital radio repeater with regenerator | |||
| 555 | 4301417 | Quadriphase differential demodulator | |||
| 556 | 4298986 | Receiver for phase-shift modulated carrier signals | |||
| 557 | 4297650 | Phase locked loop carrier recovery circuit with false lock prevention | |||
| 558 | 4281412 | Method of and apparatus for transmitting and recovering offset QPSK modulated data | |||
| 559 | 4267591 | QPSK Suppressed carrier with rotating reference phase | |||
| 560 | 4263670 | Microprocessor data modem | |||
| 561 | 4255713 | Carrier regeneration circuit for polyphase modulation system | |||
| 562 | 4246653 | In-phase quadrature demodulator for CPSK signals | |||
| 563 | 4244047 | Multiplexed carrier transmission through harmonic polluted medium | |||
| 564 | 4243941 | Digital signal receiver having a dual bandwidth tracking loop | |||
1980 | |||||
| 565 | 4241454 | Hard limiting acquisition technique for PSK carrier detector | |||
| 566 | 4238739 | Preset network for a phase lock loop | |||
| 567 | 4236249 | Circuit arrangement for correcting frequency errors during a transmission of data | |||
| 568 | 4236248 | Transmission speed switching system | |||
| 569 | 4234957 | Method and apparatus for generating timing phase error signals in PSK demodulators | |||
| 570 | 4233565 | Method and apparatus for a PSK signal detector | |||
| 571 | 4231094 | Method and device for determining the phase intercept in a system employing phase-shift keying modulation | |||
| 572 | 4224575 | Phase/frequency controlled phase shift keyed signal carrier reconstruction circuit | |||
| 573 | 4217551 | Phase modulated data transmission system | |||
| 574 | 4215239 | Apparatus for the acquisition of a carrier frequency and symbol timing lock | |||
| 575 | 4213094 | Poly-phase modulation systems | |||
| 576 | 4186348 | Receiver for data transmitted by means of the interleaved binary phase shift keyed modulation technique | |||
| 577 | 4185246 | Circuit for reducing transients by precharging capacitors | |||
| 578 | 4184045 | System and method for transmission of information | |||
| 579 | 4181967 | Digital apparatus approximating multiplication of analog signal by sine wave signal and method | |||
1979 | |||||
| 580 | 4180705 | Arrangement for the automatic resynchronization of a data transmission receiver | |||
| 581 | 4174489 | Phase discriminator in a receiver for a data transmission system | |||
| 582 | 4169246 | Digital carrier correction circuit | |||
| 583 | 4158174 | Circuit arrangement for the production of a control signal in a receiving channel which is subject to interference | |||
| 584 | 4149121 | Four phase to two phase correlator | |||
| 585 | 4143322 | Carrier wave recovery system apparatus using synchronous detection | |||
| 586 | 4137505 | Method of and apparatus for frequency control | |||
| 587 | 4135057 | High density digital transmission system | |||
1978 | |||||
| 588 | 4130802 | Unidirectional phase shift keyed communication system | |||
| 589 | 4121166 | Phase synchronizing circuit for demodulation of multi-phase PSK signals | |||
| 590 | 4110706 | Phase synchronizing circuit | |||
| 591 | 4109102 | Phase synchronizing circuit | |||
| 592 | 4109100 | Reverberation compensating communication system | |||
| 593 | 4106102 | Self-adaptive digital filter for noise and phase jitter reduction | |||
| 594 | 4105975 | Offset correction circuit for phase detectors | |||
| 595 | 4100499 | Carrier synchronization system for coherent phase demodulators | |||
| 596 | 4097813 | Carrier wave recovery circuit | |||
| 597 | 4096442 | Crosstalk corrector and decision device for FSK | |||
| 598 | 4095187 | Demodulation system for a multi-level multi-phase superposition-modulated carrier wave | |||
| 599 | 4092606 | Quadraphase demodulation | |||
| 600 | 4092491 | Differential encoding and decoding scheme for digital transmission systems | |||
| 601 | 4091331 | Arrangement for compensating carrier phase errors in a receiver for discrete data values | |||
| 602 | 4087677 | Digital PSK modem | |||
| 603 | 4087628 | Carrier lock detector | |||
| 604 | 4085378 | QPSK demodulator | |||
| 605 | 4084128 | Demodulator for phase reversal modulation system | |||
| 606 | 4079329 | Signal demodulator including data normalization | |||
| 607 | 4070638 | Nonlinear surface acoustic wave PSK encoder/correlator | |||
1977 | |||||
| 608 | 4042884 | Phase demodulator with offset frequency reference oscillator | |||
| 609 | 4041391 | Pseudo noise code and data transmission method and apparatus | |||
| 610 | 4039961 | Demodulator for combined digital amplitude and phase keyed modulation signals | |||
| 611 | 4032847 | Distortion adapter receiver having intersymbol interference correction | |||
| 612 | 4028490 | MSK digital data synchronization detector | |||
| 613 | 4027265 | Unbalanced quadriphase demodulator | |||
| 614 | 4021743 | Phase logic demodulator | |||
| 615 | 4020283 | MSK digital data synchronization detector | |||
| 616 | 4019184 | Direction-finding method and system | |||
| 617 | 4011407 | Narrow-band eight-phase modem | |||
| 618 | 4006416 | Digital communication system | |||
| 619 | 4001775 | Automatic bit synchronization method and apparatus for a logging-while-drilling receiver | |||
1976 | |||||
| 620 | 4000476 | Phase locked loop with circuit for preventing sidelock | |||
| 621 | 3997848 | Linear phase demodulator including a phase locked loop with auxiliary feedback loop | |||
| 622 | 3993956 | Digital detection system for differential phase shift keyed signals | |||
| 623 | 3993868 | Minimum shift keying communication system | |||
| 624 | 3992617 | Chopping correlator for a MSK data signal | |||
| 625 | 3991611 | Digital telemetering system for subsurface instrumentation | |||
| 626 | 3984777 | Carrier wave reproducer device for use in the reception of a multi-phase phase-modulated wave | |||
| 627 | 3984634 | Anti-multipath digital signal detector | |||
| 628 | 3983501 | Hybrid tracking loop for detecting phase shift keyed signals | |||
| 629 | 3983499 | Multi-phase PSK demodulator | |||
| 630 | 3983495 | Digital waveform generator | |||
| 631 | 3980945 | Digital communications system with immunity to frequency selective fading | |||
| 632 | 3978406 | Code error detecting system in digital code transmission | |||
| 633 | 3973212 | Phase detection in phase lock loop circuit | |||
| 634 | 3973211 | Combiner-demodulator for phase shift keyed suppressed carrier signals received over two transmission paths | |||
| 635 | 3971999 | Coherent phase demodulator for phase shift keyed suppressed carrier signals | |||
| 636 | 3970945 | Method and apparatus for demodulating PSK modulated oscillations | |||
| 637 | 3947633 | Circuit arrangement for demodulating a frequency-differential, phase-modulated signal | |||
| 638 | 3932705 | PSK telemetering synchronization and demodulation apparatus including an ambiguity eliminating device | |||
| 639 | 3931472 | Asynchronous quadriphase communications system and method | |||
| © 2017, ПАТ-Инфо, В.И. Карнышев
Дата формирования списка: 03.04.2017 | |||||