СПИСОК патентов США - подгруппа МПК16 H04L27/233
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| № п/п | Номер патента | Название патента | |||
2017 | |||||
| 1 | 9602238 | Decoding method and apparatus | |||
| 2 | 9564963 | Automatic power control system for a code division multiple access (CDMA) communications system | |||
| 3 | 9553748 | Synchronous demodulator electronic circuit for phase modulation signals | |||
| 4 | 9537533 | PLC FCH unitary circle differential symbol and preamble encoding determination | |||
| 5 | 9537513 | Rate adaptive turbo forward error correction | |||
2016 | |||||
| 6 | 9529567 | Digital processor having instruction set with complex exponential non-linear function | |||
| 7 | 9491018 | Carrier phase and amplitude estimation for phase shift keying using pilots and data | |||
| 8 | 9479373 | Packet processor verification methods and systems | |||
| 9 | 9470726 | Temperature compensated real-time clock | |||
| 10 | 9450624 | Interference cancellation and improved signal-to-noise ratio circuits, systems, and methods | |||
| 11 | 9438458 | Method and apparatus for converting analog radio frequency (RF) signals to the digital domain in a multiband and multicarrier wireless communication system | |||
| 12 | 9425807 | Circuit for symbol timing synchronization | |||
| 13 | 9372663 | Direct digital synthesis of signals using maximum likelihood bit-stream encoding | |||
| 14 | 9363128 | Method and apparatus for phase-based multi-carrier modulation (MCM) packet detection | |||
| 15 | 9325551 | Removal of irrelevance in phase-modulated digital carrier-signals | |||
| 16 | 9312987 | Collision detection using a multiple symbol noncoherent soft output detector | |||
| 17 | 9300508 | High data rate milllimeter wave radio on a chip | |||
| 18 | 9294321 | Bit signal structure for differentially encoded broadcasts | |||
| 19 | 9292255 | Multi-stage crest factor reduction (CFR) for multi-channel multi-standard radio | |||
| 20 | 9280315 | Vector processor having instruction set with vector convolution function for fir filtering | |||
| 21 | 9276800 | Single frequency synthesizer based FDD transceiver | |||
| 22 | 9276792 | Phase-domain digitizer | |||
2015 | |||||
| 23 | 9201628 | Maximum likelihood bit-stream generation and detection using M-algorithm and infinite impulse response filtering | |||
| 24 | 9184976 | Method and system for I/Q mismatch calibration and compensation for wideband communication receivers | |||
| 25 | 9143316 | Non-disruptive eye scan for data recovery units based on oversampling | |||
| 26 | 9137062 | Wireless communication apparatus and wireless communication method | |||
| 27 | 9112763 | Device, system and method for bi-phase modulation decoding | |||
| 28 | 9112515 | Geographic locating remote endpoint monitor device, system, and methodology thereof | |||
| 29 | 9106346 | Method of decoding optical data signals | |||
| 30 | 9094022 | Geographic locating remote endpoint monitor device, system, and methodology thereof | |||
| 31 | 9083471 | Coherent and self-coherent signal processing techniques | |||
| 32 | 9065709 | Digital radio data system receiver methods and apparatus | |||
2011 | |||||
| 33 | 7898322 | Demodulator for a low power radio receiver | |||
2010 | |||||
| 34 | 7817709 | Non-coherent phase differential and multiple orthogonal signal reception | |||
2007 | |||||
| 35 | 7245671 | Preprocessing signal layers in a layered modulation digital signal system to use legacy receivers | |||
2005 | |||||
| 36 | 6959054 | Filter bank and receiver for processing continuous phase modulated signals | |||
| 37 | 6940875 | Continuously adjusted-bandwidth discrete-time phase-locked loop | |||
| 38 | 6940840 | Apparatus for adaptive reverse power control for spread-spectrum communications | |||
| 39 | 6934524 | Fine-stage automatic frequency compensation in post-detection short-range wireless applications | |||
| 40 | 6920189 | Carrier recovery means | |||
| 41 | 6909337 | Noncoherent pulse position and phase shift keying transmission/reception system and a transmission/reception signal processing method therefor | |||
| 42 | 6904104 | Technique for demodulating a linear modulated data signal in a communications system | |||
| 43 | 6904103 | Receiving device and integrated circuit for reception | |||
| 44 | 6885652 | Code division multiple access (CDMA) communication system | |||
| 45 | 6873645 | Automatic power control system for a code division multiple access (CDMA) communications system | |||
| 46 | 6868131 | Demodulation apparatus, broadcasting system and broadcast receiving apparatus | |||
| 47 | 6859094 | Phase demodulation method for minimizing phase error in communication signals | |||
| 48 | 6845133 | Method and device for processing signals of a digital transmission system | |||
2004 | |||||
| 49 | 6834086 | Demodulator and method for second harmonic cancellation | |||
| 50 | 6831942 | MPSK spread spectrum communications receiver with carrier recovery and tracking using weighted correlation techniques | |||
| 51 | 6831905 | Spread spectrum system assigning information signals to message-code signals | |||
| 52 | 6831578 | Method and circuit arrangement for demodulation of a quadrature amplitude- or phase-modulated signal | |||
| 53 | 6823181 | Universal platform for software defined radio | |||
| 54 | 6816473 | Method for adaptive forward power control for spread-spectrum communications | |||
| 55 | 6801516 | Spread-spectrum system for assigning information signals having different data rates | |||
| 56 | 6788662 | Method for adaptive reverse power control for spread-spectrum communications | |||
| 57 | 6775332 | Multi-stage receiver | |||
| 58 | 6771721 | Method and apparatus for eliminating audio clicks in a radio receiver | |||
| 59 | 6771715 | Demodulator using cordic rotator-based digital phase locked loop for carrier frequency correction | |||
| 60 | 6748206 | Low-power-consumption radio receiver | |||
| 61 | 6748036 | Radio receiving method and apparatus | |||
| 62 | 6744809 | Efficient multipath centroid tracking circuit for a code division multiple access (CDMA) system | |||
| 63 | 6738414 | Radio and communication method using a transmitted intermediate frequency | |||
| 64 | 6735425 | Telephone with a demodulator circuit with an improved local oscillator | |||
| 65 | 6735261 | Calibration of a N-port receiver | |||
| 66 | 6721301 | Centroid tracking for spread-spectrum communications | |||
| 67 | 6714596 | BS digital broadcast receiver | |||
| 68 | 6707805 | Method for initial power control for spread-spectrum communications | |||
| 69 | 6704377 | Method of correcting frequency errors for coherently demodulated wireless communication systems | |||
| 70 | 6697609 | Carrier reproducing apparatus and method of the same | |||
| 71 | 6697350 | Adaptive vector correlator for spread-spectrum communications | |||
| 72 | 6693983 | Method and system for detection of short digital radio messages | |||
| 73 | 6690748 | Receiver with improved digital intermediate to base band demodulator | |||
| 74 | 6690747 | Method for reference signal generation in the presence of frequency offsets in a communications station with spatial processing | |||
| 75 | 6690745 | Circuit for detecting the phase of received signal | |||
| 76 | 6678342 | Absolute-phasing synchronization capturing circuit | |||
| 77 | 6678336 | Hierarchical transmission digital demodulator | |||
| 78 | 6674812 | High IF frequencies with a lower frequency logic based FSK modulation selecting a harmonic alias and demodulation using sub-sampling techniques | |||
| 79 | 6674791 | Automatic power control system for a code division multiple access (CDMA) communications system | |||
| 80 | 6674788 | Automatic power control system for a code division multiple access (CDMA) communications system | |||
2003 | |||||
| 81 | 6662000 | Synchronisation method and device for a communication receiver | |||
| 82 | 6639951 | Digital demodulator | |||
| 83 | 6633600 | Traffic lights in a code division multiple access (CDMA) modem | |||
| 84 | 6628926 | Method for automatic frequency control | |||
| 85 | 6621857 | Carrier tracking loop for direct sequence spread spectrum systems | |||
| 86 | 6621332 | Demodulator and demodulation method of DQPSK system with reduced circuit scale | |||
| 87 | 6614856 | Intermediary frequency input QPSK demodulator | |||
| 88 | 6608826 | Continuously adjustable bandwidth discrete-time phase-locked loop | |||
| 89 | 6603824 | Method for demodulating a carrier wave modulated by a digital symbol sequence | |||
| 90 | 6603821 | Wireless communication terminal capable of correctly specifying position of burst and having small frequency error of recovered carrier | |||
| 91 | 6603820 | Demodulator having rotation means for frequency offset correction | |||
| 92 | 6603819 | Radio symbol synchronization and doppler estimation techniques | |||
| 93 | 6603349 | Doppler learning phase lock loop for burst demodulator | |||
| 94 | 6590945 | Method and apparatus for frequency offset compensation | |||
| 95 | 6587523 | Radio signal receiving apparatus and a method of radio signal reception | |||
| 96 | 6587518 | Synchronous BPSK decoder | |||
| 97 | 6587517 | Multi-stage receiver | |||
| 98 | 6571088 | Automatic frequency control circuit | |||
| 99 | 6570941 | Receiver and phase extraction circuit | |||
| 100 | 6563858 | Method of performing antenna diversity in spread spectrum in wireless local area network | |||
| 101 | 6560303 | Joint frame, carrier and clock synchronization scheme | |||
| 102 | 6560298 | Method and apparatus for concurrent synchronization and improved automatic frequency control in a communication device | |||
| 103 | 6556636 | Digital communication apparatus having level controller with a disturbance detection unit | |||
| 104 | 6549588 | Communications system and corresponding receiver unit | |||
| 105 | 6539215 | Down converter and demodulator using a three port junction | |||
| 106 | 6526103 | Multi-stage receiver | |||
| 107 | 6522703 | Estimating frequency offset to demodulate a packet of phase-modulated symbols | |||
| 108 | 6522702 | Radio data communication terminal | |||
| 109 | 6519300 | System and method for automatic frequency correction in a pilot symbol assisted demodulator | |||
| 110 | 6507627 | Direct conversion receiving apparatus with DC component cut function | |||
2002 | |||||
| 111 | 6501807 | Data recovery system for radio frequency identification interrogator | |||
| 112 | 6493397 | Radio communication device and radio communication method | |||
| 113 | 6487240 | Apparatus for receiving and recovering frequency shift keyed symbols | |||
| 114 | 6477208 | Composite trellis system and method | |||
| 115 | 6473471 | Slope drift and offset compensation in zero-if receivers | |||
| 116 | 6473469 | Local communication system and apparatus for use therein | |||
| 117 | 6470056 | Offset QPSK modulation analytic system | |||
| 118 | 6466630 | Symbol synchronization in a continuous phase modulation communications receiver | |||
| 119 | 6459743 | Digital reception with radio frequency sampling | |||
| 120 | 6456672 | Automatic frequency control communication system | |||
| 121 | 6456668 | QPSK modulated backscatter system | |||
| 122 | 6456608 | Adaptive vector correlator using weighting signals for spread-spectrum communications | |||
| 123 | 6452983 | Demodulator for improving reception performance in satellite and Mobile communications | |||
| 124 | 6449470 | Method and device for estimating the frequency offset in a signal received by a mobile-telephone demodulator | |||
| 125 | 6449322 | Maximum likelihood detection of MPSK bursts with inserted reference symbols | |||
| 126 | 6445908 | Dynamic temperature compensation and stage selection in pilot signal acquisition | |||
| 127 | 6445751 | Estimation of frequency offset in a communication system | |||
| 128 | 6445736 | GSM baseband receiver arrangement using digital signal processing | |||
| 129 | 6442383 | Demodulator and digital wireless communication receiver | |||
| 130 | 6442219 | Simultaneous decoding and phase synchronization using the criterion of maximum likelihood | |||
| 131 | 6438177 | Digital satellite broadcasting receive in which loop bandwidth of PLL circuit is changed at the time of centering | |||
| 132 | 6400784 | Synchronization system and method for digital communication systems | |||
| 133 | 6396884 | Automatic frequency control circuit | |||
| 134 | 6393599 | Multi-chip data detector implementation for symmetric differential phase shift keying modulation formats | |||
| 135 | 6393073 | Method of frequency offset estimation and correction for adaptive antennas | |||
| 136 | 6393067 | Differential detection receiver | |||
| 137 | 6389089 | Method of searching for pilot signals | |||
| 138 | 6381264 | Efficient multipath centroid tracking circuit for a code division multiple access (CDMA) system | |||
| 139 | 6377634 | Circuit for reproducing bit timing and method of reproducing bit timing | |||
| 140 | 6377616 | Calibration of n-port receivers | |||
| 141 | 6363125 | Non-coherent six-port receiver | |||
| 142 | 6363106 | Method and apparatus for despreading OQPSK spread signals | |||
| 143 | 6363102 | Method and apparatus for frequency offset correction | |||
| 144 | 6359935 | Method for iterative demodulation and decoding for a system with coding and differential demodulation | |||
| 145 | 6356608 | Method, apparatus, and system for determining a location of a frequency synchronization signal | |||
| 146 | 6341146 | Phase-shift-keying demodulator and demodulation method using a period-width windowing technique | |||
| 147 | 6339624 | Trellis decoding with multiple symbol noncoherent detection and diversity combining | |||
2001 | |||||
| 148 | 6317452 | Method and apparatus for wireless spread spectrum communication with preamble sounding gap | |||
| 149 | 6314145 | Tracking carrier timing | |||
| 150 | 6310924 | Digital demodulator | |||
| 151 | 6310513 | Demodulator and demodulation method for demodulating quadrature modulation signals | |||
| 152 | 6301317 | Synchronization system and method for digital communication systems | |||
| 153 | 6297691 | Method and apparatus for demodulating coherent and non-coherent modulated signals | |||
| 154 | 6295473 | Digital delay line receiver for use with an implantable medical device | |||
| 155 | 6289069 | Digital filter for rotation correction loop of a QPSK or QAM demodulator | |||
| 156 | 6282236 | Modem designs, and systems using the modem designs for communicating information between a number of remote locations and one or more central locations | |||
| 157 | 6278754 | Demodulation of asynchronously sampled data by means of detection-transition sample estimation in a shared multi-carrier environment | |||
| 158 | 6275543 | Method for reference signal generation in the presence of frequency offsets in a communications station with spatial processing | |||
| 159 | 6272168 | Code sequence generator in a CDMA modem | |||
| 160 | 6259748 | Signal offset elimination | |||
| 161 | 6256359 | RDS signal detection device | |||
| 162 | 6246730 | Method and arrangement for differentially detecting an MPSK signal using a plurality of past symbol data | |||
| 163 | 6246281 | Absolute phasing circuit | |||
| 164 | 6236687 | Decision directed phase locked loop (DD-PLL) for use with short block codes in digital communication systems | |||
| 165 | 6229843 | Pilot adaptive vector correlator | |||
| 166 | 6222874 | Frequency acquisition method for direct sequence spread spectrum systems | |||
| 167 | 6219534 | Radio communication apparatus | |||
| 168 | 6215778 | Bearer channel modification system for a code division multiple access (CDMA) communication system | |||
| 169 | 6212174 | Capacity management method for a code division multiple access (CDM) communication system | |||
| 170 | 6208617 | Channel tracking in a mobile receiver | |||
| 171 | 6204725 | Circuit for demodulating digital signal undergoing different modulation schemes | |||
| 172 | 6198908 | System and a method for transfer of a digital information carrying signal | |||
| 173 | 6195400 | Two-mode demodulating apparatus | |||
| 174 | 6195399 | Method and apparatus for converting a wideband if signal to a complex (quadrature) baseband signal | |||
| 175 | 6192085 | Circuit arrangement with a data sequence generator | |||
| 176 | 6188716 | Radio and communication method using a transmitted intermediate frequency | |||
| 177 | 6185260 | Radio communication device using quadrature modulation-demodulation circuit | |||
| 178 | 6181751 | Multi-stage detection system in digital demodulator | |||
| 179 | 6178194 | Cellular mobile telephone system | |||
| 180 | 6177835 | Method and apparatus for high data rate demodulation | |||
| 181 | 6175726 | Receiver architecture for the receiving of angle-modulated/angle-keyed carrier signals | |||
| 182 | 6175269 | Demodulation unit and method of demodulating a quadrature | |||
| 183 | 6172632 | Bipolar FSK digital waveform synthesizer for modem systems | |||
| 184 | 6169448 | Digital demodulator | |||
2000 | |||||
| 185 | 6157619 | Code division multiple access (CDMA) communication system | |||
| 186 | 6151371 | Automatic frequency control circuit | |||
| 187 | 6148184 | Radio frequency zero if direct down converter | |||
| 188 | 6144708 | Phase-locked loop circuit with equalizer and phase locking method | |||
| 189 | 6140869 | Device for demodulating a binary phase-shift keyed signal | |||
| 190 | 6134286 | Synchronization techniques and systems for radiocommunication | |||
| 191 | 6130577 | Digital demodulators for phase modulated and amplitude-phase modulated signals | |||
| 192 | 6127884 | Differentiate and multiply based timing recovery in a quadrature demodulator | |||
| 193 | 6122329 | Radio frequency identification interrogator signal processing system for reading moving transponders | |||
| 194 | 6118831 | Data demodulator device | |||
| 195 | 6115432 | High-frequency signal receiving apparatus | |||
| 196 | 6100755 | Phase decision circuit | |||
| 197 | 6097766 | Timing phase synchronization detecting circuit and demodulator | |||
| 198 | 6091789 | Method and device for phase modulated signals | |||
| 199 | 6091786 | Method and apparatus in a communication receiver for estimating symbol timing and carrier frequency | |||
| 200 | 6081563 | AFC circuit of digital demodulation device | |||
| 201 | 6081550 | Method of testing clock paths and network elements for carrying out the method | |||
| 202 | 6075980 | Interference suppression in RF signals | |||
| 203 | 6075826 | Method and apparatus for obtaining initial carrier and symbol phase estimates for use in synchronizing transmitting data | |||
| 204 | 6075410 | Method and device for digitally demodulating a frequency modulated signal | |||
| 205 | 6075408 | OQPSK phase and timing detection | |||
| 206 | 6072992 | High-frequency device | |||
| 207 | 6072841 | Block phase estimator for the coherent detection of non-differentially phase modulated data bursts on rician fading channels | |||
| 208 | 6072785 | Differential PSK signalling in CDMA networks | |||
| 209 | 6072770 | Method and system providing unified DPSK-PSK signalling for CDMA-based satellite communications | |||
| 210 | 6069924 | Differential detector with error correcting function | |||
| 211 | 6067325 | Modem designs, and systems using the modem designs for communicating information between a number of remote locations and one or more central locations | |||
| 212 | 6064702 | Four-stage phase demodulation low frequency wireless mouse device | |||
| 213 | 6061390 | P-code enhanced method for processing encrypted GPS signals without knowledge of the encryption code | |||
| 214 | 6055231 | Continuously adjusted-bandwidth discrete-time phase-locked loop | |||
| 215 | 6052571 | Tuner for PSK or PAM data applications | |||
| 216 | 6052418 | Frequency error measuring apparatus and radio apparatus | |||
| 217 | 6046630 | .pi./4 QPSK digital demodulating apparatus and a method thereof | |||
| 218 | 6044118 | Method for adjusting the frequency of an oscillator for a receiver circuit | |||
| 219 | 6038267 | Digital demodulator, maximum-value selector, and diversity receiver | |||
| 220 | 6034564 | Demodulator using quasi-synchronous detection to demodulate modulated quadrature input signals | |||
| 221 | 6031880 | Carrier recovery in communications system | |||
| 222 | 6028888 | Single-channel and multi-channel coherent demodulation devices with no pilot signal, and corresponding receiving system using a plurality of diversity paths | |||
| 223 | 6021503 | Bit synchronization for interrogator | |||
| 224 | 6021164 | Digital radio communication system having reduced phase-locked loop, and its synchronization | |||
| 225 | 6021157 | Fast phase estimation in digital communication systems | |||
| 226 | 6018552 | Differential detection receiver | |||
| 227 | 6018551 | Method and apparatus for reproducing carrier | |||
| 228 | 6016329 | Method and apparatus for preamble-less demodulation | |||
1999 | |||||
| 229 | 5991344 | Mobile communication device and method for setting AFC initial value | |||
| 230 | 5991332 | Adaptive matched filter and vector correlator for a code division multiple access (CDMA) modem | |||
| 231 | 5991329 | Automatic power control system for a code division multiple access (CDMA) communications system | |||
| 232 | 5987074 | Digital communication demodulator, digital communication demodulation method and digital demodulation circuit | |||
| 233 | 5982821 | Frequency discriminator and method and receiver incorporating same | |||
| 234 | 5974096 | Digital quadrature detection circuit | |||
| 235 | 5970101 | Phase detecting method by analog-to-digital conversion | |||
| 236 | 5966405 | Frequency deviation measuring device | |||
| 237 | 5963586 | Method and apparatus for parallel noncoherent correlation of a spread spectrum signal | |||
| 238 | 5963585 | MSK spread-spectrum receiver which allows CDMA operations | |||
| 239 | 5960044 | Apparatus and method for block phase estimation | |||
| 240 | 5960040 | Communication signal processors and methods | |||
| 241 | 5953385 | Method and device for detecting the error on the frequency of a carrier | |||
| 242 | 5953370 | Apparatus for receiving and correlating a spread spectrum signal | |||
| 243 | 5949826 | Data transmission and reception system | |||
| 244 | 5946360 | Frequency offset compensation using dotting sequences | |||
| 245 | 5946359 | Parameter measuring apparatus for digital quadrature modulation signals | |||
| 246 | 5945875 | .pi./n shift phase-shift keying demodulator | |||
| 247 | 5943370 | Direct conversion receiver | |||
| 248 | 5940446 | Maximum likelihood detection of MPSK bursts with inserted reference symbols | |||
| 249 | 5930518 | Arithmetic unit | |||
| 250 | 5930292 | Method and apparatus for improved autocorrelation in biphase modulated pseudorandom noise coded systems using tri-state demodulation | |||
| 251 | 5923030 | System and method for recovering a signal of interest from a phase modulated signal using quadrature sampling | |||
| 252 | 5920593 | Device for personal digital cellular telephones | |||
| 253 | 5917864 | Automatic frequency control circuit | |||
| 254 | 5914990 | Filtering in a receiver that uses log-polar signal processing | |||
| 255 | 5914985 | Digital demodulator | |||
| 256 | 5912919 | Efficient multipath centroid tracking circuit for a code division multiple access (CDMA) system | |||
| 257 | 5909470 | Method and apparatus for decision directed demodulation using antenna arrays and spatial processing | |||
| 258 | 5905762 | Receiver synchronization using punctured preamble | |||
| 259 | 5901184 | Extended range voltage controlled oscillator for frequency synthesis in a satellite receiver | |||
| 260 | 5898739 | QPSK demodulator for obtaining phase by arithmetic operation | |||
| 261 | 5896306 | Group delay correction method and apparatus | |||
| 262 | 5896060 | DPSK demodulator which may be used in an interrogator of a remote intelligence communication system | |||
| 263 | 5883548 | Demodulation system and method for recovering a signal of interest from an undersampled, modulated carrier | |||
| 264 | 5881112 | Modulator with baseband to phase converter | |||
| 265 | 5881110 | Carrier phase synchronization by reverse playback | |||
| 266 | 5881100 | Method and apparatus for coherent correlation of a spread spectrum signal | |||
| 267 | 5878090 | Receiver synchronization using punctured preamble | |||
| 268 | 5875215 | Carrier synchronizing unit | |||
| 269 | 5875213 | GMSK communication device test system | |||
| 270 | 5875212 | Phase demodulation method and apparatus for a wireless LAN, by counting the IF period | |||
| 271 | 5872801 | Method of compensating for doppler error in a wireless communications system, such as for GSM and IS54 | |||
| 272 | 5872538 | Frequency domain correction of I/Q imbalance | |||
| 273 | 5872480 | Programmable down-sampler having plural decimators and modulator using same | |||
| 274 | 5867533 | Digital delta mode carrier sense for a wireless LAN | |||
| 275 | 5862187 | MPSK demodulator | |||
| 276 | 5856998 | Method and apparatus for correlating a continuous phase modulated spread spectrum signal | |||
1998 | |||||
| 277 | 5848104 | Demodulator of receiver used for communications | |||
| 278 | 5844943 | Method and converter for converting rectangular signals to phase signals | |||
| 279 | 5841816 | Diversity Pi/4-DQPSK demodulation | |||
| 280 | 5841815 | Data receiver for correcting a phase of a received phase-modulated signal | |||
| 281 | 5838797 | Secure communication by encryption/decryption of vector at PSK modulation/detection stage | |||
| 282 | 5838737 | Method and apparatus for estimating PSK modulated signals | |||
| 283 | 5832044 | Transmitter antenna diversity and fading-resistant modulation for wireless communication systems | |||
| 284 | 5832028 | Method and apparatus for coherent serial correlation of a spread spectrum signal | |||
| 285 | 5828707 | Differential detecting apparatus for detecting phase difference of phase-modulated signal | |||
| 286 | 5828705 | Carrier tracking technique and apparatus having automatic flywheel/tracking/reacquisition control and extended signal to noise ratio | |||
| 287 | 5825810 | MSK spread-spectrum receiver which allows CDMA operations | |||
| 288 | 5822375 | Method for detecting received signal sequences | |||
| 289 | 5822339 | Data decoder and method to correct inversions or phase ambiguity for M-ary transmitted data | |||
| 290 | 5815568 | Disabling tone detector for network echo canceller | |||
| 291 | 5815099 | Method and apparatus for differentially decoding signals | |||
| 292 | 5815035 | Demodulating circuit, demodulating apparatus, demodulating method, and modulating/demodulating system of acoustic signals | |||
| 293 | 5812942 | Balanced differential radio receiver and method of operation | |||
| 294 | 5812611 | Frequency estimating circuit and AFC circuit using the same | |||
| 295 | 5808509 | Receiver and demodulator for phase or frequency modulated signals | |||
| 296 | 5799047 | Carrier synchronization unit and synchronization method | |||
| 297 | 5799038 | Method for measuring modulation parameters of digital quadrature-modulated signal | |||
| 298 | 5799034 | Frequency acquisition method for direct sequence spread spectrum systems | |||
| 299 | 5799010 | Code division multiple access (CDMA) communication system | |||
| 300 | 5796787 | Receiver and method thereof | |||
| 301 | 5796783 | Digital transmission system | |||
| 302 | 5796776 | Code sequence generator in a CDMA modem | |||
| 303 | 5793250 | Phase demodulator selectively using a first or a second detector | |||
| 304 | 5790604 | Method and apparatus for automatic frequency correction acquisition | |||
| 305 | 5790602 | Receiver synchronization using punctured preamble | |||
| 306 | 5786725 | Reduced complexity maximum likelihood multiple symbol differential detector | |||
| 307 | 5774503 | Demodulation method and demodulation device | |||
| 308 | 5768291 | Method and apparatus for error mitigating a received communication signal | |||
| 309 | 5767738 | Apparatus and method for demodulating a modulated signal | |||
| 310 | 5764707 | Method and apparatus for improved phase shift keyed (PSK) signal demodulation | |||
| 311 | 5764171 | Quadrature signal conversion device | |||
| 312 | 5757865 | Carrier phase control circuit | |||
| 313 | 5757862 | Demodulator, modulation and demodulation system, and demodulation method | |||
| 314 | 5757858 | Dual-mode digital FM communication system | |||
| 315 | 5757847 | Method and apparatus for decoding a phase encoded signal | |||
| 316 | 5754585 | Method and apparatus for serial noncoherent correlation of a spread spectrum signal | |||
| 317 | 5754584 | Non-coherent spread-spectrum continuous-phase modulation communication system | |||
| 318 | 5751187 | Method and device for phase-modulated signals | |||
| 319 | 5748687 | Spreading code sequence acquisition system and method that allows fast acquisition in code division multiple access (CDMA) systems | |||
| 320 | 5748046 | Phase locked loop with controllable response time | |||
| 321 | 5742637 | Fast phase estimation in digital communication systems | |||
| 322 | 5740204 | Digital radiocommuncation receiver | |||
| 323 | 5737694 | Highly stable frequency synthesizer loop with feedforward | |||
| 324 | 5732111 | Frequency error compensation for direct sequence spread spectrum systems | |||
| 325 | 5732109 | Phase detector | |||
| 326 | 5729577 | Signal processor with improved efficiency | |||
| 327 | 5729558 | Method of compensating for Doppler error in a wireless communications system, such as for GSM and IS54 | |||
| 328 | 5727027 | PSK signal demodulation method and apparatus | |||
| 329 | 5727019 | Digital modem | |||
| 330 | 5717723 | Apparatus for use in equipment providing a digital radio link between a fixed radio unit and a mobile radio unit | |||
| 331 | 5712637 | Slope, drift and offset compensation in zero-IF receivers | |||
| 332 | 5710796 | Method and receiver for determining a phase error in a radio-frequency signal | |||
1997 | |||||
| 333 | 5703910 | Digital radio receiver | |||
| 334 | 5696797 | Demodulator with baseband doppler shift compensation and method | |||
| 335 | 5692007 | Method and apparatus for differential phase encoding and decoding in spread-spectrum communication systems with continuous-phase modulation | |||
| 336 | 5684835 | Locally coherent QPSK detection with differential decoding for a fading channel | |||
| 337 | 5684832 | Maximum likelihood differential detecting method and differential detector thereof | |||
| 338 | 5680414 | Synchronization apparatus and method for spread spectrum receiver | |||
| 339 | 5671254 | Modulation, demodulation and antenna coupling circuits used in IC card reading/writing apparatus, and method of supplying power to the IC card | |||
| 340 | 5671253 | Apparatus for demodulating and decoding video signals encoded in different formats | |||
| 341 | 5666386 | Digital demodulating apparatus capable of selecting proper sampling clock for data transmission speed | |||
| 342 | 5661765 | Receiver and transmitter-receiver | |||
| 343 | 5659574 | Multi-bit correlation of continuous phase modulated signals | |||
| 344 | 5654989 | Method and apparatus for symbol timing tracking | |||
| 345 | 5651031 | Clock recovery circuit of demodulator | |||
| 346 | 5648982 | Spread spectrum transmitter | |||
| 347 | 5640431 | Method and apparatus for offset frequency estimation for a coherent receiver | |||
| 348 | 5640427 | Demodulator | |||
| 349 | 5640426 | Clock recovery circuit of demodulator | |||
| 350 | 5640424 | Direct downconverter circuit for demodulator in digital data transmission system | |||
| 351 | 5630228 | Double balanced mixer circuit with active filter load for a portable comunication receiver | |||
| 352 | 5629956 | Method and apparatus for reception and noncoherent serial correlation of a continuous phase modulated signal | |||
| 353 | 5627862 | Apparatus for demodulating phase modulated WAVE | |||
| 354 | 5627861 | Carrier phase estimation system using filter | |||
| 355 | 5627856 | Method and apparatus for receiving and despreading a continuous phase-modulated spread spectrum signal using self-synchronizing correlators | |||
| 356 | 5625652 | Timing recovery controller and method for adjusting the timing of synchronizing windows in a PSK demodulator | |||
| 357 | 5625649 | Clock recovery circuit of demodulator | |||
| 358 | 5625643 | Modulator and demodulator apparatus | |||
| 359 | 5625573 | Fast acquisition of GMSK-modulated signal for CDPD applications | |||
| 360 | 5623520 | Correlation detector employing two level A/D conversion and arithmetic sign control | |||
| 361 | 5621767 | Method and device for locking on a carrier signal by dividing frequency band into segments for segment signal quality determination and selecting better signal quality segment | |||
| 362 | 5619537 | Maximum a posteriori decoder for digital communications | |||
| 363 | 5615230 | Process for transmitting digital signals which combines advantages of OQPSK and .pi./4-QPSK | |||
| 364 | 5610949 | Phase detector and a method determining the phase of received PSK symbols | |||
| 365 | 5610948 | Digital demodulation apparatus | |||
| 366 | 5610940 | Method and apparatus for noncoherent reception and correlation of a continous phase modulated signal | |||
| 367 | 5608763 | Method and apparatus for decoding a radio frequency signal containing a sequence of phase values | |||
| 368 | 5604768 | Frequency synchronized bidirectional radio system | |||
| 369 | 5602879 | Clock recovering circuit for digital demodulator | |||
| 370 | 5602877 | Method and apparatus for information recovery in a radio communication device | |||
| 371 | 5598441 | Carrier acquisition technique for mobile radio QPSK demodulator | |||
| 372 | 5598439 | Method and apparatus for symbol clock phase recovery | |||
| 373 | 5598125 | Method for demodulating a digitally modulated signal and a demodulator | |||
| 374 | 5594758 | Frequency controller and method of correcting phase estimates in a PSK demodulator using frequency control | |||
| 375 | 5594757 | Method and apparatus for digital automatic frequency control | |||
| 376 | 5592506 | MSK spread-spectrum receiver which allows CDMA operations | |||
1996 | |||||
| 377 | 5590158 | Method and apparatus for estimating PSK modulated signals | |||
| 378 | 5590157 | Data terminal comprising a demodulator for a FSK phase-coherent modulated signal | |||
| 379 | 5588027 | Digital demodulating method and circuit for use in a time-division multiple access channel | |||
| 380 | 5588026 | Method of compensating phase shift keying frequency offset | |||
| 381 | 5585761 | Demodulation of digital phase modulated signal | |||
| 382 | 5583890 | Error correction of MSK signals dependent on sample quality | |||
| 383 | 5579347 | Digitally compensated direct conversion receiver | |||
| 384 | 5579346 | Automatic frequency control method and circuit for use in a delay detection type demodulator | |||
| 385 | 5579345 | Carrier tracking loop for QPSK demodulator | |||
| 386 | 5578947 | Delayed detection type demodulator | |||
| 387 | 5574399 | Coherent PSK detector not requiring carrier recovery | |||
| 388 | 5572553 | Digital apparatus for broadband carrier-recovery | |||
| 389 | 5572551 | Carrier loop acquisition for staggered phase shift keying | |||
| 390 | 5568520 | Slope drift and offset compensation in zero-IF receivers | |||
| 391 | 5566210 | Data receiving apparatus | |||
| 392 | 5563908 | Modulator and demodulator apparatus | |||
| 393 | 5563537 | Frequency-controlled circuit | |||
| 394 | 5561665 | Automatic frequency offset compensation apparatus | |||
| 395 | 5559799 | Modulator and demodulator apparatus as well as modulation and demodulation method | |||
| 396 | 5557643 | Automatic frequency control system for GMSK-modulated signals | |||
| 397 | 5557222 | Delayed detection type demodulator | |||
| 398 | 5553098 | Demodulator with selectable coherent and differential data | |||
| 399 | 5550869 | Demodulator for consumer uses | |||
| 400 | 5550867 | Complex angle converter | |||
| 401 | 5550506 | DQPSK demodulator capable of improving a symbol error rate without decreasing a transmission rate | |||
| 402 | 5541966 | System and circuit for estimating the carrier frequency of a PSK numeric signal | |||
| 403 | 5541958 | Clock recovery circuit of demodulator | |||
| 404 | 5533069 | Method and apparatus for digital frequency compensation of carrier drift in a PSK demodulator | |||
| 405 | 5533060 | Multi-phase PSK signal decoder including phase display generator with phase correcting feedback | |||
| 406 | 5530382 | Delayed detection type demodulator | |||
| 407 | 5528634 | Trajectory directed timing recovery | |||
| 408 | 5528632 | Non-complex dual-correlation phase reversal detector and method | |||
| 409 | 5526381 | Robust non-coherent detector for .pi./4-DQPSK signals | |||
| 410 | 5524127 | Unique word detector and method for detecting a unique word within one of several windows offset in time | |||
| 411 | 5521944 | Circuit for a demodulator for a radio data signal in a radio receiver | |||
| 412 | 5521548 | Phase detector | |||
| 413 | 5519625 | System for characterizing phase-modulated signals using a time interval analyzer | |||
| 414 | 5517530 | Method and apparatus for dual demodulation of mobile channel signals | |||
| 415 | 5514998 | Method and system for demodulating GMSK signals in a cellular digital packet data system | |||
| 416 | 5511097 | Delay detection circuit | |||
| 417 | 5506873 | Demodulator for a phase shift keying (PSK) signal | |||
| 418 | 5504455 | Efficient digital quadrature demodulator | |||
| 419 | 5504454 | Demodulator for powerline carrier communications | |||
| 420 | 5500876 | Phase error canceller for QPSK signals using unique word detectors | |||
| 421 | 5500620 | Timing recovery for digital demodulation | |||
| 422 | 5499268 | Adaptive equalizer capable of compensating for carrier frequency offset | |||
| 423 | 5495510 | Phase synchronization device integrated into the demodulator stage of a receiver of multi-phase modulator signals | |||
| 424 | 5491724 | Mean phase predictor for maximum a posteriori demodulator | |||
| 425 | 5485108 | Delayed detection type demodulator | |||
| 426 | 5484987 | Delayed detection type demodulator | |||
1995 | |||||
| 427 | 5475710 | Adaptive equalizer and receiver | |||
| 428 | 5473637 | Open-loop phase estimation methods and apparatus for coherent demodulation of phase modulated carriers in mobile channels | |||
| 429 | 5471499 | Minimum shift keyed saw device and method | |||
| 430 | 5469452 | Viterbi decoder bit efficient chainback memory method and decoder incorporating same | |||
| 431 | 5463664 | DQPSK delay detection circuit that produces stable clock signal in response to both I and Q signals | |||
| 432 | 5461643 | Direct phase digitizing apparatus and method | |||
| 433 | 5457423 | Radio data signal demodulator with clock signal recovery | |||
| 434 | 5455845 | Microwave receiver having coherent threshold detection | |||
| 435 | 5453715 | Communication device with efficient multi-level digital demodulator | |||
| 436 | 5452322 | Receiver for digital signals transmitted in the coded differential modulation mode | |||
| 437 | 5450446 | Demodulator for digital modulation signals | |||
| 438 | 5448594 | One bit differential detector with frequency offset compensation | |||
| 439 | 5446421 | Local oscillator phase noise cancelling modulation technique | |||
| 440 | 5444415 | Modulation and demodulation of plural channels using analog and digital components | |||
| 441 | 5442656 | Timing extraction device and data transmission device using the timing extraction device | |||
| 442 | 5440589 | Frequency offset dealing modulator and demodulator apparatus | |||
| 443 | 5440587 | Demodulator for digitally modulated wave | |||
| 444 | 5440268 | AFC circuit for QPSK demodulator | |||
| 445 | 5440267 | Demodulator | |||
| 446 | 5432819 | DPSK communications with Doppler compensation | |||
| 447 | 5430770 | Method and apparatus for composite signal separation and PSK/AM/FM demodulation | |||
| 448 | 5426669 | Quadrature demodulator | |||
| 449 | 5425058 | MSK phase acquisition and tracking method | |||
| 450 | 5422889 | Offset correction circuit | |||
| 451 | 5416800 | Mobile radio receiver for a radio transmission system | |||
| 452 | 5412695 | Method and device for removing frequency offset | |||
| 453 | 5412694 | Data demodulator | |||
| 454 | 5410573 | Digital phase-locked loop circuit | |||
| 455 | 5406218 | Phase demodulator receiving inputs from phase detector and binary phase detector | |||
| 456 | 5402449 | Process and device for converting digitally modulate high-frequency reception signals | |||
| 457 | 5388122 | Modulation and demodulation system | |||
| 458 | 5379323 | DQPSK delay detection circuit | |||
1994 | |||||
| 459 | 5377232 | Frequency synchronized bidirectional radio system | |||
| 460 | 5376894 | Phase estimation and synchronization using a PSK demodulator | |||
| 461 | 5373247 | Automatic frequency control method and circuit for correcting an error between a received carrier frequency and a local frequency | |||
| 462 | 5369374 | Differential detection demodulator | |||
| 463 | 5367538 | Apparatus and method for direct phase digitizing | |||
| 464 | 5355092 | Relatively simple QPSK demodulator, that uses substantially all digital circuitry and an internally generated symbol clock, and circuitry for use therein | |||
| 465 | 5337331 | Method of coherent demodulation for phase shift keying and a device for implementing the method | |||
| 466 | 5335250 | Method and apparatus for bidirectional demodulation of digitally modulated signals | |||
| 467 | 5323425 | Direct conversion receiver for digital signals and method for demodulation of said signals | |||
| 468 | 5317602 | Base-band delayed detector with synchronizing circuit | |||
| 469 | 5313170 | Differential detection demodulator | |||
| 470 | 5311555 | Phase divider for complex signals | |||
| 471 | 5311545 | Modem for fading digital channels affected by multipath | |||
| 472 | 5311523 | Carrier phase synchronous type maximum likelihood decoder | |||
| 473 | 5309480 | Non-coherent quadrature demodulation of MSK signals | |||
| 474 | 5307380 | Delaying detection circuit | |||
| 475 | 5303269 | Optically maximum A posteriori demodulator | |||
| 476 | 5301210 | Coherent demodulating device with carrier wave recovering digital circuit | |||
| 477 | 5295162 | Digital demodulator which quantizes signal components according to different thresholds | |||
| 478 | 5295151 | Transition detection circuit for PSK signals using the SAW Chirp-Z algorithm (U) | |||
| 479 | 5291527 | Communication system and demodulator used in communication system | |||
| 480 | 5287197 | Signal demodulation device | |||
| 481 | 5287067 | Method and apparatus for demodulation with adaptive phase control in quasi-coherent detection | |||
| 482 | 5283815 | Tangental type differential detector for pulse shaped PI/4 shifted differentially encoded quadrature phase shift keying | |||
| 483 | 5282228 | Timing and automatic frequency control of digital receiver using the cyclic properties of a non-linear operation | |||
| 484 | 5278514 | MSK demodulator using one synchronous detector | |||
| 485 | 5276710 | Carrier frequency error detector capable of accurately detecting a carrier frequency error | |||
| 486 | 5276704 | SAWC phase detection method and apparatus | |||
1993 | |||||
| 487 | 5272447 | Demodulator and demodulation method for a digital phase modulated signal | |||
| 488 | 5272446 | Digitally implemented fast frequency estimator/demodulator for low bit rate maritime and mobile data communications without the use of an acquisition preamble | |||
| 489 | 5270665 | Demodulator for continuously and accurately carrying out demodulating operation by a frequency multiplication method | |||
| 490 | 5268647 | Method and arrangement of coherently demodulating PSK signals using a feedback loop including a filter bank | |||
| 491 | 5260975 | Digital demodulator | |||
| 492 | 5260671 | Receiving circuit for demodulating an angle modulated signal | |||
| 493 | 5257291 | Circuit for evaluating frequency difference | |||
| 494 | 5255290 | Method and apparatus for combined frequency offset and timing offset estimation | |||
| 495 | 5247543 | Carrier aquisition apparatus for digital satellite communication system | |||
| 496 | 5245611 | Method and apparatus for providing carrier frequency offset compensation in a TDMA communication system | |||
| 497 | 5241567 | Circuit for demodulating PSK modulation signals | |||
| 498 | 5237287 | Demodulating method and apparatus particularly for demodulating a differential phase-shift keying signal | |||
| 499 | 5230009 | Method for deciding region of PI/4 shift quadriphase shift keying modulated signals | |||
| 500 | 5214674 | Method and apparatus for carrier synchronization acquisition in a digital burst mode communication system | |||
| 501 | 5212826 | Apparatus and method of DC offset correction for a receiver | |||
| 502 | 5208836 | Method for bit detection at the receiver end of differentially coded binary or quaternary PSK signals in differential-coherent demodulation | |||
| 503 | 5202901 | Digital discriminator for pulse shaped .pi./4 shifted differentially encoded quadrature phase shift keying | |||
| 504 | 5202644 | Receiver apparatus | |||
| 505 | 5195108 | System and method for determining absolute phase of a differentially-encoded, phase-modulated signal | |||
| 506 | 5177741 | Subscriber unit for wireless digital telephone system | |||
1992 | |||||
| 507 | 5173663 | Demodulation circuit enabling independent recovery of the carrier and sampling timing | |||
| 508 | 5172070 | Apparatus for digitally demodulating a narrow band modulated signal | |||
| 509 | 5168507 | Automatic adaptive equalizer | |||
| 510 | 5164959 | Digital equalization method and apparatus | |||
| 511 | 5159705 | Frequency synthesizer circuit | |||
| 512 | 5157697 | Receiver employing correlation technique for canceling cross-talk between in-phase and quadrature channels prior to decoding | |||
| 513 | 5157344 | Digital quadrature phase detector for angle modulated signals | |||
| 514 | 5151926 | Sample timing and carrier frequency estimation circuit for sine-cosine detectors | |||
| 515 | 5151925 | Coherent demodulation method for a digitally modulated signal having a continuous phase and a constant envelope | |||
| 516 | 5144256 | Method and apparatus for demodulating a GMSK signal | |||
| 517 | 5142553 | Receiver with direct quadrature sampling of the input signal | |||
| 518 | 5142287 | Technique for demodulating and decoding MLS DPSK transmissions using a digital signal processor | |||
| 519 | 5136616 | Method of rapidly controlling the frequency of a coherent radio receiver and apparatus for carrying out the method | |||
| 520 | 5131014 | Apparatus and method for recovery of multiphase modulated data | |||
| 521 | 5131008 | DSP-based GMSK coherent detector | |||
| 522 | 5128968 | Apparatus for cancelling carrier phase jitters | |||
| 523 | 5126682 | Demodulation method and apparatus incorporating charge coupled devices | |||
| 524 | 5122758 | Differential phase demodulator for PSK-modulated signals | |||
| 525 | 5121070 | Phase demodulator for PSK-modulated signals | |||
| 526 | 5117441 | Method and apparatus for real-time demodulation of a GMSK signal by a non-coherent receiver | |||
| 527 | 5117440 | Digital quadrature phase detection | |||
| 528 | 5117195 | Data referenced demodulation of multiphase modulated data | |||
| 529 | 5101418 | Digital time-multiplexed quadrature frequency upconverter | |||
| 530 | 5099494 | Six channel digital demodulator | |||
| 531 | 5097220 | Circuit for demodulating PSK modulated signal by differential-defection | |||
| 532 | 5093848 | Method of controlling the frequency of a coherent radio receiver and apparatus for carrying out the method | |||
| 533 | 5084902 | Jitter canceller with an initial value setting circuit for an adaptive filter | |||
| 534 | 5079513 | Demodulator and radio receiver having such a demodulator | |||
| 535 | 5079512 | Quadrature demodulation of a data sequence following a particular signal sequence with a local reference carrier signal having a frequency different from a received carrier signal | |||
1991 | |||||
| 536 | 5077755 | Digital signal processing system in modem | |||
| 537 | 5077531 | PSK signal demodulation system | |||
| 538 | 5067141 | Interpolator for varying a signal sampling rate | |||
| 539 | 5062123 | Kalman predictor for providing a relatively noise free indication of the phase of a carrier laden with noise | |||
| 540 | 5056122 | Phase-shift keyed demodulation apparatus | |||
| 541 | 5050176 | Direct modulation phase-shift-keying system and method | |||
| 542 | 5048058 | MSK modulation and differentially coherent detection transmission system | |||
| 543 | 5029186 | Method of demodulation in digital communication systems with multipath propagation | |||
| 544 | 5022048 | Programmable digital frequency-phase discriminator | |||
| 545 | 5020080 | Demodulation method and demodulator for digital signals with amplitudes of constant envelope, continuously modulated in phase and/or in frequency | |||
| 546 | 5017883 | Multiple symbol differential detection | |||
| 547 | 5012491 | Preamable detection circuit for digital communications system | |||
| 548 | 5008670 | Phase/digital conversion method and arrangements for implementing the method | |||
| 549 | 5007068 | Doppler-corrected differential detection system | |||
| 550 | 5001727 | Carrier and data recovery and demodulation system | |||
| 551 | 4996697 | Deglitching means for digital communication systems | |||
| 552 | 4995052 | Demodulation method | |||
| 553 | 4994802 | Subscriber unit for wireless digital telephone system | |||
| 554 | 4989220 | Method and apparatus for demodulating a class of M-ary phase shift keyed (PSK) signals | |||
1990 | |||||
| 555 | 4980767 | Technique for determining signal dispersion characteristics in communications systems | |||
| 556 | 4977580 | Timing and carrier recovery in TDMA without preamble sequence | |||
| 557 | 4965810 | Digital differential phase-shift keyed decoder | |||
| 558 | 4961206 | Data modem system | |||
| 559 | 4959619 | Digital transmission demodulator including an automatic fault corrector | |||
| 560 | 4943983 | Subscriber unit for wireless digital telephone system | |||
| 561 | 4943982 | Baseband carrier phase corrector | |||
| 562 | 4942591 | Multiple phase PSK demodulator | |||
| 563 | 4941155 | Method and circuitry for symbol timing and frequency offset estimation in time division multiple access radio systems | |||
| 564 | 4939790 | PLL frequency stabilization in data packet receivers | |||
| 565 | 4926499 | Carrier phase controller for a receiver of phase modulated signals | |||
| 566 | 4922206 | Method of demodulation using split delay line | |||
| 567 | 4912422 | Demodulation system for PSK signals with low carrier to noise ratio and large frequency offset | |||
| 568 | 4893317 | Digital signals and frequency correction in a digital wireless system | |||
1989 | |||||
| 569 | 4888793 | Phase correcting DPSK/PSK receiver with digitally stored phase correction derived from received data | |||
| 570 | 4885756 | Method of demodulating digitally modulated signals, and apparatus implementing such a method | |||
| 571 | 4881246 | Method and apparatus for demodulating a class of M-ary phase shift keyed (PSK) signals | |||
| 572 | 4881240 | AM equalizer circuit for digital systems | |||
| 573 | 4860318 | PSK detection using an IFM receiver | |||
| 574 | 4856031 | Adaptive multiharmonic phase jitter compensation | |||
| 575 | 4856025 | Method of digital signal transmission | |||
| 576 | 4853944 | Digital AM/FM/.phi.M demodulator | |||
| 577 | 4849991 | Method and circuitry for determining symbol timing for time division multiple access radio systems | |||
| 578 | 4849706 | Differential phase modulation demodulator | |||
| 579 | 4847868 | Non-coherent pattern detection | |||
| 580 | 4843615 | CPFSK communication system employing nyquist-filtered modulator/demodulator | |||
| 581 | 4841547 | Digital communication system | |||
| 582 | 4841470 | Surface acoustic wave device for differential phase shift keying convolving | |||
| 583 | 4835792 | Universal FM receiver for mobile communications | |||
| 584 | 4829566 | Apparatus for detecting and discriminating phase jumps in a periodic signal and its application to a telephone tone signal with phase inversions | |||
| 585 | 4829542 | PSK modem system having improved demodulation reliability | |||
| 586 | 4825448 | Subscriber unit for wireless digital telephone system | |||
| 587 | 4821261 | Packet transmission of digital signals over a high capacity channel, particularly over a satellite broadcasting channel | |||
| 588 | 4817116 | Digital radio communication system utilizing quadrature modulated carrier waves | |||
| 589 | 4810921 | Elastic surface wave device | |||
| 590 | 4807252 | Digital communication system | |||
| 591 | 4807251 | PSK modem system with improved demodulation reliability | |||
| 592 | 4799239 | Phase-coherent FSK signal demodulator | |||
| 593 | 4796028 | Apparatus for bidirectional data transmission | |||
1988 | |||||
| 594 | 4785468 | Intermittent receiver | |||
| 595 | 4785255 | Digital FSK signal demodulator | |||
| 596 | 4760344 | Phase shift keying signal demodulation method and apparatus | |||
| 597 | 4746872 | Differential phase shift keying demodulator | |||
| 598 | 4737728 | Digitally processed demodulator for quadrature modulated signals | |||
| 599 | 4726038 | Digital communication system | |||
1987 | |||||
| 600 | 4715047 | Digital differential phase shift keyed demodulator | |||
| 601 | 4714892 | Differential phase shift keying demodulator | |||
| 602 | 4712222 | Adaptive recursive phase offset tracking system | |||
| 603 | 4706300 | Optical heterodyne detection pulse receiving system and method | |||
| 604 | 4697183 | Means for non-contacting signal and energy transmission | |||
| 605 | 4694257 | Phase-coherent demodulation clock and data recovery | |||
| 606 | 4675881 | Arrangement for recovering a clock signal from an angle-modulated carrier signal having a modulation index m=0.5 | |||
| 607 | 4669095 | Maximum distance from zero crossing MSK demodulator | |||
| 608 | 4656648 | Process for the noncoherent demodulation of a digital signal | |||
| 609 | 4651108 | Demodulation circuit having means for detecting phase difference | |||
| 610 | 4651104 | Frequency converter with automatic frequency control | |||
| 611 | 4647863 | Saw transition detector for PSK signals | |||
| 612 | 4639939 | Apparatus for cancelling periodic carrier phase jitters | |||
| 613 | 4634990 | Apparatus for demodulating differential phase shift keyed signals | |||
1986 | |||||
| 614 | 4631486 | M-phase PSK vector processor demodulator | |||
| 615 | 4628271 | Differential phase shift keying demodulator | |||
| 616 | 4618830 | PSK demodulator using asynchronous local oscillator | |||
| 617 | 4612518 | QPSK modulator or demodulator using subharmonic pump carrier signals | |||
| 618 | 4608540 | Phase-shift keying demodulator | |||
| 619 | 4606051 | QPSK demodulator with I and Q post-detection data correction | |||
| 620 | 4603393 | Demodulator for constant envelope and continuous phase signals which are angle modulated by a train of binary symbols | |||
| 621 | 4599732 | Technique for acquiring timing and frequency synchronization for modem utilizing known (non-data) symbols as part of their normal transmitted data format | |||
| 622 | 4584533 | Non-coherent BPSK demodulator | |||
| 623 | 4583048 | MSK digital demodulator for burst communications | |||
| 624 | 4583047 | Reception circuit for a wave modulated at one time in frequency by an analog signal and at another time in phase by a digital signal | |||
| 625 | 4577335 | Coherent data communications technique | |||
| 626 | 4573166 | Digital modem with plural microprocessors | |||
| 627 | 4563650 | Power line communication receiver with dual threshold signal interrogation capability | |||
1985 | |||||
| 628 | 4555667 | Synchronous digital QPSK demodulator with carrier error correction | |||
| 629 | 4554509 | Frequency shift keyed demodulation system | |||
| 630 | 4530104 | Circuit for reducing errors in a data receiver | |||
| 631 | 4527278 | Method for correcting the frequency of a local carrier in a receiver of a data transmission system and receiver using this method | |||
| 632 | 4520493 | Adaptive recursive frequency offset tracking system | |||
| 633 | 4516079 | Coherent phase shift keyed demodulator for power line communication systems | |||
| 634 | 4514697 | Coherent phase shift keyed demodulator with improved sampling apparatus and method | |||
1984 | |||||
| 635 | 4481640 | Spread spectrum modem | |||
| 636 | 4471313 | Demodulator for phase difference demodulated signals | |||
| 637 | 4466108 | TDMA/PSK Carrier synchronization without preamble | |||
| 638 | 4457005 | Digital coherent PSK demodulator and detector | |||
| 639 | 4455664 | Carrier data operated squelch | |||
| 640 | 4441194 | Triple bit non-coherent matched filter receiving system | |||
| 641 | 4438524 | Receiver for angle-modulated carrier signals | |||
1983 | |||||
| 642 | 4416016 | Differential phase shift keyed receiver | |||
| 643 | 4414675 | MSK and OK-QPSK signal demodulator | |||
| 644 | 4412302 | Digital phase demodulation and correlation | |||
| 645 | 4392232 | Simplified transversal correlator for MSK and MSK related waveforms | |||
| 646 | 4379284 | Coherent phase shift keyed demodulator for power line communication systems | |||
| 647 | 4379266 | PSK Demodulator with automatic compensation of delay induced phase shifts | |||
| 648 | 4373151 | Stochastic demodulator for phase jump-modulated signals, operating in time divided up over several channels | |||
| 649 | 4371839 | Differentially coherent signal detector | |||
1982 | |||||
| 650 | 4359692 | Rapid acquisition shift keyed signal demodulator | |||
| 651 | 4348641 | Digital baseband carrier recovery circuit | |||
| 652 | 4320517 | Method and device for effecting the initial adjustment of the clock in a synchronous data receiver | |||
| 653 | 4320345 | Adaptive differential PSK demodulator | |||
| 654 | 4318049 | Carrier recovery circuit for use in a multi-level phase shift keying demodulator | |||
| 655 | 4317210 | Coherent receiver for angle-modulated data signals | |||
| 656 | 4313103 | Digital demodulator | |||
| 657 | 4311964 | Coherent phase shift keyed demodulator for power line communication systems | |||
1981 | |||||
| 658 | 4246654 | Digital coherent phase demodulator | |||
1980 | |||||
| 659 | 4242641 | Methods and apparatus for demodulating a differentially phase-modulated signal | |||
| 660 | 4225964 | Detection means for providing multiple baud values per individual baud period of a carrier signal to obviate baud timing ambiguities | |||
| 661 | 4218769 | Means for subdividing a baud period into multiple integration intervals to enhance digital message detection | |||
| 662 | 4216543 | Means for deriving baud timing from an available AC signal | |||
| 663 | 4190802 | Digital demodulator for phase shift keyed signals | |||
1979 | |||||
| 664 | 4180779 | QPSK Demodulator with two-step quadrupler and/or time-multiplexing quadrupling | |||
| 665 | 4168470 | Two-bit A/D conversion apparatus without a signal derived automatic gain control | |||
| 666 | 4165488 | Derangement detector in a receiver of a system for data transmission by means of phase modulation of a carrier | |||
| 667 | 4138644 | Adaptive phase detection method and apparatus | |||
1978 | |||||
| 668 | 4128828 | Differential detection systems with non-redundant error correction | |||
| 669 | 4121050 | Differential tri-phase shift keyed modulation | |||
| 670 | 4088957 | Method and apparatus for synchronously detecting a differentially encoded carrier signal | |||
| 671 | 4074119 | Code word determination | |||
1977 | |||||
| 672 | 4061977 | Phase tracking network | |||
| 673 | 4059805 | Phase lock loop carrier generator for receiver of phase modulated carrier pulse signals | |||
| 674 | 4057759 | Communication receiving apparatus | |||
| 675 | 4054841 | Differential demodulators using surface elastic wave devices | |||
| 676 | 4047153 | Statistical data detection method and apparatus | |||
| 677 | 4035581 | Code word detecting method | |||
| 678 | 4029903 | Receiver for PSK digital signals | |||
| 679 | 4019149 | Correlative data demodulator | |||
| 680 | 4007331 | Apparatus for demodulation of relative phase modulated binary data | |||
| 681 | 4007330 | Method and apparatus for demodulation of relative phase modulated binary data | |||
1976 | |||||
| 682 | 3997847 | Digital demodulator for differentially encoded phase-shift-keyed data | |||
| 683 | 3993956 | Digital detection system for differential phase shift keyed signals | |||
| 684 | 3991377 | Differential phase shift keying demodulator | |||
| 685 | 3990015 | Differential phase shift keyed detector utilizing a circulating memory | |||
| 686 | 3987422 | System for detecting signal quality of a phase-modulated wave | |||
| 687 | 3983546 | Phase-to-pulse conversion circuits incorporating Josephson devices and superconducting interconnection circuitry | |||
| 688 | 3980962 | Demodulators | |||
| 689 | 3972000 | Phase filter for reducing the effects of the noise components altering discrete phase modulated signals | |||
| 690 | 3956623 | Digital phase detector | |||
| 691 | 3947777 | Circuit arrangement for the demodulation of a phase-modulated signal | |||
| 692 | 3944939 | Demodulator assembly for trains with differential phase modulation | |||
| 693 | 3943285 | Multiplexed data modem | |||
| 694 | 3938052 | Digital demodulator for phase-modulated waveforms | |||
| © 2017, ПАТ-Инфо, В.И. Карнышев
Дата формирования списка: 03.04.2017 | |||||