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№ п/п Номер патента Название патента

2017

19602184Wireless communication device, control method of wireless communication device and phase shifter
29596120Signal transmission apparatus, distortion compensation apparatus, and signal transmission method
39596049Secure open-air communication system utilizing multi-channel decoyed transmission
49590711Managing beamformed signals to optimize transmission rates of sensor arrays
59590708Method and apparatus for equal energy codebooks for antenna arrays with mutual coupling
69590706Method and apparatus for equal energy codebooks for antenna arrays with mutual coupling
79590665Apparatus and method for removing noise of power amplifier in mobile communication system
89590663Radio apparatus
99590567Moving mean and magnitude dual path digital predistortion
109584167Wireless communication system, distortion compensation device, and distortion compensation method
119577588Systems and methods for signal predistortion
129564935Linear composite transmitter utilizing composite power amplification
139553742Method and apparatus for independent rise and fall waveform shaping
149553618Signal cancellation method and device for wireless communication system
159548788Frequency conversion system with improved spurious response and frequency agility
169548703Distortion compensation apparatus, transmission apparatus, and distortion compensation method
179544171Zero insertion for ISI free OFDM reception
189544092Apparatus for improved communication and associated methods

2016

199525383Apparatus and methods for a capacitive digital-to-analog converter based power amplifier
209521027Method for generating symbols for the automatic gain control of a signal to be transmitted
219515861Peak suppression apparatus
229503167Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals
239497058High efficiency adaptive RF transmitter
249496981System and method of masking electromagnetic interference (EMI) emissions of a circuit
259490972Method and apparatus for providing conditional access based on channel characteristics
269479374Digital front-end channelization device
279473334Wireless transmission device
289473205Coaxial data communication with reduced EMI
299467284Transmitter, receiver, quantum key distribution (QKD) system and quantum key distribution method
309461677Local phase correction
319455752Apparatus and method for adaptive common mode noise decomposition and tuning
329450544Pre-distortion method, associated apparatus and non-transitory machine readable medium
339444672Data modulation
349444665Signal processing system and signal processing method cooperating with variable gain amplifier
359444499Wireless device and wireless access system
369438357Calibration device, signal processing device, and user interface for the same
379438320Iterative nonlinear precoding and feedback for multi-user multiple-input multiple-output (MU-MIMO) with channel state information (CSI) impairments
389438281Distortion-compensation device and distortion-compensation method
399438187Amplifying device, transmitting device
409438178Mixer impairment correction based on volterra series
419437210Audio signal processing
429425836Asymmetrical transmitter-receiver system for short range communications
439413419Phase-optimized constant envelope transmission (POCET) method, apparatus and system
449401828Methods and systems for low-power and pin-efficient communications with superposition signaling codes
459400928Method of compensating for signal degradation in transmission systems
469391649Envelope shaping in envelope tracking power amplification
479385797Flexible, reconfigurable multipoint-to-multipoint digital radio frequency transport architecture
489385764Digital pre-distortion for high bandwidth signals
499374141Signal generation method, transmission device, reception method, and reception device
509369325Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals
519363112Systems and methods for equalization in radio frequency signal paths
529362996Pre-coding method and transmitter
539362866Envelope path pre-distortion for wideband transmitter systems
549337886Digital pre-distortion with shared observation path receiver
559331722Feedback calibration of digital to time converter
569313078Pulse cancellation crest factor reduction with a low sampling rate
579313063Apparatus and method for transmitting data with conditional zero padding
589306731Signal processing apparatus
599300517Method and apparatus for transmitting/receiving signal in communication system
609300504Mobile device transmitter and methods for transmitting signals in different signal dimensions for 3GPP LTE
619300462Methods, devices, and algorithms for the linearization of nonlinear time variant systems and the synchronization of a plurality of such systems
629300375Method and device for efficient feedback in wireless communication system supporting multiple antennas
639294941Phase transformation of repeated signals
649294329Emphasized signal point arrangement operation for compensating DC imbalance
659292255Multi-stage crest factor reduction (CFR) for multi-channel multi-standard radio
669288099Predistortion circuit and method for predistorting a signal
679281879Methods and apparatus for individually controlling power spectral density (PSD) per transmission port in MIMO transmitters
689281788All digital zero-voltage switching
699276784Frequency selective predistortion
709276619Dynamic configuration of modulation and demodulation
719276617Radio frequency domain digital pre-distortion
729276605Compression and de-compression of complex valued OFDM data for a radio base station
739276528Transmitter system with reconfigurable amplifiers
749264911Apparatus and method for controlling power based on energy efficiency in multiple-input and multiple-output (MIMO) communication system
759264279Transmitter, receiver, and method for receiving and transmitting a radio frequency signal
769263881Digital amplitude modulation apparatus and control method of digital amplitude modulation apparatus
779258156Baseband envelope predistorter
789258081High dynamic range AMAM predistortion
799252821Adaptive high-order nonlinear function approximation using time-domain volterra series to provide flexible high performance digital pre-distortion
809251110Modifying the spectral energy content of a data bus
819240757Transmission apparatus and transmission method
829236976Multi stage code generator and decoder for communication systems
839231530System for calibrating power amplifier

2015

849225363Digital pre-distortion transmitter and method for controlling the same
859219632Highly-spectrally-efficient transmission using orthogonal frequency division multiplexing
869209753Predistortion correction method, predistortion correction apparatus, transmitter, and base station
879203608System for encrypting data with an error correction code
889203450System and method for pre distortion and iterative compensation for nonlinear distortion in system employing FTN symbol transmission rates
899203448Wireless communication apparatus
909197282Phase-optimized constant envelope transmission (POCET) method, apparatus and system
919191093Interference management for concurrent transmission in downlink wireless communications
929191041Digital predistortion of wideband power amplifiers with reduced observation bandwidth
939190974Method and a device for controlling the level of a pulsed high-frequency signal
949185708Method and apparatus for mapping of absolute power grant values in wireless communications
959172574Dynamic-range reduction of complex-valued baseband signals
969172498Controlled noise injection in transmitter for noise margin testing
979166729Enhanced demodulation reference signal (DM-RS) design
989148312Digital feed forward noise cancelling regulator
999136887Subtracting linear impairments for non-linear impairment digital pre-distortion error signal
1009131454Compensating power spectral density for power levels
1019130610Transmission apparatus and transmission method
1029129200Protection system for radio frequency communications
1039124386System, device, and method for securing voice authentication and end-to-end speech interaction
1049124324Dual loop digital predistortion for power amplifiers
1059118371Digital transmitter and method for compensating mismatch in digital transmitter
1069118285Compensation of a transmitter distortion
1079117436Sound processing apparatus and sound processing method
1089117270Pre-processed information embedding system
1099112761System and method for routing and up-converting narrowband channels
1109100821Anti-eavesdropping communication system and method
1119094269Peak to average power ratio suppression
1129094085Control of MISO node
1139088319RF transmitter architecture, integrated circuit device, wireless communication unit and method therefor
1149088316Transmission filter calculator, communication device and methods
1159077410Apparatus and method of transmitting data in multi-carrier system
1169077409Signal processing system and signal processing method
1179077298Sampling circuit, communication device, distortion correction circuit, signal sampling method, and program
1189071487Power amplification system, device and method
1199071293Transmitter data path single-ended duty cycle correction for EMI reduction
1209065396Apparatus for compensating for distortion of transmitter array in radio communication system and method for controlling the same
1219054937Envelope extraction with reduced bandwidth for power modulation
1229054908RFI mitigation using burst timing
1239054791Methods and apparatus for partial interference reduction within wireless networks
1249054759VSWR measurement circuit, radio communication apparatus, VSWR measurement method, and recording medium having VSWR measurement program stored thereon
1259048795Method for implementing compensation filter and apparatus for signal bandwidth compensation
1269042483Apparatus and method of compensating for I/Q imbalance in direct up-conversion system
1279042482FBR DC vector offset removal using LO phase switching
1289036736Method and apparatus for controlling update of digital pre-distortion coefficient
1299031599System and method for power control
1309031157PAPR reduction using clipping function depending on the peak value and the peak width
1319025698Method and device for acquiring multi-frequency band digital predistortion output signals
1329020067Distortion and aliasing reduction for digital to analog conversion
1339020065Radio frequency digital filter group delay mismatch reduction
1349014299Digital pre-distortion system for radio frequency transmitters with reduced sampling rate in observation loop
1359008223Transmitter and method for reducing the peak-to-average power ratio of a digitally modulated communication signal
1369008220Frequency reuse in wireless point-to-point communication systems
1379002487System and method for data reception and transmission in audible frequency band
1389001928Transmitter first/second digital predistortion and first/second adaption circuitry with feedback
1398995572Digital Predistortion for nonlinear RF power amplifiers
1408995570Methods and systems for beam steering crest factor reduction (CFR) clip noise
1418995568Phase transformation of repeated signals
1428995567Method and system for power supply adjustment and polar modulation in a MIMO system
1438989885Watermark generator, watermark decoder, method for providing a watermark signal in dependence on binary message data, method for providing binary message data in dependence on a watermarked signal and computer program using a two-dimensional bit spreading
1448989307Power amplifier system including a composite digital predistorter
1458989306Low-noise regulation of battery power
1468982991Digital pre-distortion method and apparatus thereof for changing memory degree depending on input level
1478976898Low-distortion class S power amplifier with constant-impedance bandpass filter
1488976897Suppression of spurious harmonics generated in TX driver amplifiers
1498976895Method for calibrating a linearizer and linearized electronic component
1508976893Predistortion according to an artificial neural network (ANN)-based model
1518976892Beamforming method and apparatus using a rate splitting scheme in a multi-cell multi-antenna interference channel
1528971447Variable delay of data signals
1538971446Predistortion factor determination for predistortion in power amplifiers
1548971445Method and apparatus for equalizing a transmit channel for cable losses in a C8PSK HART system
1558971444Generalized frequency modulation
1568965547Watermark signal provision and watermark embedding
1578964894Circuit arrangement for compensating an attenuation occurring in an antenna signal connection between a mobile terminal and an antenna and compensation method for this purpose
1588964893Predistortion apparatus for power amplifier
1598964892Apparatus and method for operating a transmitter
1608964890Adaptive spectral enhancement and harmonic separation
1618964888System and method of generating a pre-emphasis pulse
1628964716Estimating signal characteristics
1638957729Memory structure having taps and non-unitary delays between taps
1648953800Method for transporting low-bit rate information
1658953707Differential codebook for temporally-correlated MISO dual-polarization antenna
1668948687System and method for determining and controlling gain margin in an RF repeater
1678948303Communication device and method of crest factor reduction using amplitude compression
1688948298MIMO system and method of generating hierarchical codebook therefor
1698942314Transmit (TX) interference canceller and power detector
1708942313Group delay calibration method for power amplifier envelope tracking
1718942311Low bandwidth PHY transmission in a wider bandwidth
1728939834Software verification and authentication
1738938025Correction of I/Q impairments in transmitters and receivers
1748934572Phase rotation for preambles within multiple user, multiple access, and/or MIMO wireless communications
1758929485System and method for broadcast pre-coding in a MIMO system

2014

1768923512Circumvention of dynamic, robust, embedded-signal detection
1778923434Method and apparatus for modifying a complex-valued signal, and mobile communication device
1788913689Wide bandwidth digital predistortion system with reduced sampling rate
1798913688Pre-distortion for a phase interpolator with nonlinearity
1808908796Orthogonal frequency division multiplexing (OFDM) transmitter and receiver windowing for adjacent channel interference (ACI) suppression and rejection
1818903014Communications device having controller to correct an initial IQ imbalance and associated methods
1828897391Distortion compensator and distortion compensation method
1838891676Antenna device and method in a MIMO system
1848891675Power-indexed look-up table design of digital pre-distortion for power amplifiers with dynamic nonlinearities
1858891674Digital transmission system for transmitting additional data and method thereof
1868891673System and method for a multichannel transmitter and receiver
1878891672Method and apparatus for maximizing power output based on linearity of a transmitter
1888891671Method, apparatus and system for calibrating channel
1898891670CATV transmission system using analog small form factor pluggable modules
1908891668System and method for estimating and correcting phase shift in a wireless communication device
1918885765Method and a user terminal for processing digital predistortion
1928885763Digital pre-distortion
1938885690Power control techniques for wireless transmitters
1948879665Controlling a power amplifier based on transmitter output emissions
1958873676Transmitter gain control and calibration
1968866549Method of power amplifier calibration
1978861640Transmission method taking echo into account
1988855234Method and system for baseband predistortion linearization in multi-channel wideband communications systems
1998855231Methods and apparatus for signal conditioning for polar transmitters
2008848828Distortion compensation circuit, transmitting apparatus and distortion compensating method
2018848825Echo cancellation in wireless inband signaling modem
2028848824High efficiency RF system linearizer using controlled complex nonlinear distortion generators
2038843088Minimum feedback radio architecture with digitally configurable adaptive linearization
2048842773Method and apparatus for using factorized precoding
2058842772Pre-coding method and transmitter
2068842771Amplitude flatness and phase linearity calibration for RF sources
2078837633Systems and methods for digital processing based on active signal channels of a communication system
2088831136Wireless apparatus and distortion compensating method
2098824594Digital frequency modulation aided AMPM predistortion digital transmitter
2108824593Wireless communication device capable of pre-compensating for oscillator phase noise
2118824574Transmitting unit that reduces PAPR and method therefor
2128812858Broadcast stenography of data communications
2138811530Method and system of beamforming a broadband signal through a multiport network
2148804872Dynamic determination of volterra kernels for digital pre-distortion
2158798268System and methods for permitting open access to data objects and for securing data within the data objects
2168798198Calibration systems for wireless electronic devices
2178798197Distortion compensation amplifier device and distortion compensation method
2188798196Peak-to-average power ratio reduction for hybrid FM HD radio transmission
2198792583Linearization in the presence of phase variations
2208792582Mobile wireless communications device having auxiliary receiver to determine transmit impairment and generate transmit impairment compensation signal, and associated methods
2218792572Universal peak power reduction in communication radios
2228787495Signal processing circuit and communication device having the same
2238787494Modeling digital predistorter
2248787492Symbol mapping method for repetition channel coding
2258781415Distortion correction based feedforward control systems and methods for radio frequency power sources
2268774406Masking addition operation device for prevention of side channel attack
2278774315Phase-optimized constant envelope transmission (POCET) method, apparatus and system
2288774312Method and means for the scalable improvement of the quality of a signal encoding method
2298774310Low overhead MIMO scheme
2308767962System and methods for permitting open access to data objects and for securing data within the data objects
2318767871Antenna tuning using the ratio of complex forward and reflected signals
2328767870Dynamic variable inter-symbol interference (IS) stress impairment system
2338767869Joint linear and non-linear cancellation of transmit self-jamming interference
2348761304Apparatus and method for processing digital transmission/reception signals to correct in-band gain flatness
2358761303Unequal multipath protection of different frames within a superframe using different cyclic prefix lengths
2368760261Devices employing fast carrier cancellation and methods thereof
2378750916Transmission power control method, and mobile communication system
2388750814Transmitter/receiver for wireless communication system
2398750499Cryptographic method using a non-supersingular elliptic curve E in characteristic 3
2408750414Method and system for polar modulation with discontinuous phase
2418750413Digital modulation with arbitrary input sampling and output modulation frequencies
2428750412Data processing system and data processing method
2438750364Interpolation of filter coefficients
2448744002Peak power suppressing circuit and communication device having the same
2458737938Signal Transmitter linearization
2468737527Composite amplifier, transmitter, and composite amplifier control method
2478737526Predistortion of complex modulated waveform
2488737523Apparatus and method for predictive over-drive detection
2498731105Multi-rate filter and filtering method for digital pre-distorters
2508724737Method and apparatus for mapping of absolute power grant values in wireless communications
2518723649Antenna for protecting radio frequency communications
2528718583Method and apparatuses for transmitter to multi-carrier power amplifier configuration
2538718188Apparatus and methods for envelope tracking
2548718181Reverse link power control for an OFDMA system
2558718180Multi-antenna wireless communications method and apparatus with vector perturbation with a reduced lattice
2568711976Pre-distortion architecture for compensating non-linear effects
2578711975Tomlinson Harashima precoding with additional receiver processing in a multi-user multiple-input multiple-output wireless transmission system
2588711974Systems and methods for mitigating spectral regrowth from non-linear systems
2598705654Measuring phase shift in a radio frequency power amplifier
2608699620Digital Predistortion for nonlinear RF power amplifiers
2618699619Dutycycle adjustment to improve efficiency of a digital RF-PA
2628687733Digital predistortion (DPD) method and system for selecting at least one data sample
2638681897Dynamic digital communication system control
2648676364Apparatus and method for synchronizing multichannel extension data with an audio signal and for processing the audio signal
2658675769Constellation map optimization for highly spectrally efficient communications
2668670730Power efficient radio frequency transmitter
2678670502Selective peak power reduction
2688670501Digital pre-distortion of non-linear systems with reduced bandwidth feedback
2698665991Communications device with separate I and Q phase power amplification having selective phase and magnitude adjustment and related methods
2708660207Digital pre-distortion with carrier cancellation
2718660206Method of generating pulse waveform
2728654974Apparatus and method to provide secure communication over an insecure communication channel for location information using tracking devices
2738654891Peak suppressing apparatus, peak suppressing method and wireless communications apparatus
2748645695System and method for managing security key architecture in multiple security contexts of a network environment
2758634946Apparatus and method for calculating a fingerprint of an audio signal, apparatus and method for synchronizing and apparatus and method for characterizing a test audio signal
2768634494Bandpass sampling schemes for observation receiver for use in PA DPD system for concurrent multi-band signals
2778626089Adaptive predistorter coupled to a nonlinear element
2788625714Time delay estimation
2798625713Method for beamforming transmissions from a network element having a plurality of antennas, and the network element

2013

2808619985Table splitting for cryptographic processes
2818619906Look up table-based sum predistorter for power amplifification with concurrent dual band inputs
2828619905Predistorter and distortion compensation method
2838619904Channel-assisted iterative precoder selection
2848619903Crest factor reduction for a multicarrier-signal with spectrally shaped single-carrier cancelation pulses
2858611460Wireless communication unit, integrated circuit and method of power control of a power amplifier therefor
2868611459Transmitter linearized using look-up table with unadaptable data and method therefor
2878605819Memory effect canceller, transmitter, and memory effect cancelling method
2888605818Selective peak power reduction
2898605817Modulation and layer mapping in physical channels
2908605816Non-contact wireless communication apparatus, method of waveform-shaping envelope curve, and mobile electronic device
2918600055Method and system using stealth noise modulation
2928599962Power control using distortion measurement
2938599961Crest factor reduction method and circuit for a multi-carrier signal
2948594231Power series digital predistorter and distortion compensation control method therefor
2958588426Methods and apparatus to secure communications in a mobile network
2968588333RF transmitter and method of operation
2978588332Dynamic digital pre-distortion system
2988579705Software verification and authentication
2998577311Predistortion of amplifier input signals
3008576944Signal transmitting apparatus for OFDM system and parameter adjusting method thereof
3018576942High efficiency transmitter
3028576941Configurable basis-function generation for nonlinear modeling
3038571138Fast generalized decision feedback equalizer precoder implementation for multi-user multiple-input multiple-output wireless transmission systems
3048571137Distortion and aliasing reduction for digital to analog conversion
3058571136Adaptive symbol transition method for OFDM-based cognitive radio systems
3068565342Power amplification apparatus, OFDM modulation apparatus, wireless transmission apparatus, and distortion reduction method for power amplification apparatus
3078565341Power amplifier and semiconductor integrated circuit
3088565340Method and device for transmission of signals in a GSM system
3098559551Filter device stopping input of zero-valued sample
3108553522OFDMA-based radio communication apparatus and learning signal generation method for compensation of non-linear distortion in the radio communication apparatus
3118548092Method and apparatus for reducing peak to average power ratio using peak windowing
3128548091Measuring and correcting errors in a transmit chain with an IQ up-converter and IQ down-converter
3138542769High output power digital TX
3148542766Time alignment algorithm for transmitters with EER/ET amplifiers and others
3158532687Methods for geographic optimization of cellular telephone transmit power settings
3168532223Power amplifying device and power amplifying method
3178532222Digital broadcasting system and method of processing data
3188526535Mobile wireless communications device with separate in-phase (I) and quadrature (Q) phase power amplification and power amplifier pre-distortion and IQ balance compensation
3198520773Power amplifier digital predistortion system for concurrent dual band inputs
3208520772Communication device and power correction method
3218514974Method and apparatus for controlling a transmit power
3228514019Distortion compensation amplifier
3238509838User equipment apparatus for simultaneously transmitting signals via a plurality of wireless communication chips to which different wireless communication schemes are applied and method for controlling transmission power thereof
3248509707Wireless communications device, gaming controller and integrated circuits with millimeter wave transceiver and methods for use therewith
3258509348Up-converted and amplified transmission signal using log-antilog
3268509347Method and system for baseband predistortion linearization in multi-channel wideband communication systems
3278509346Transmitter with reduced power consumption and increased linearity and dynamic range
3288509345Crest factor reduction with phase optimization
3298498363Compensating for frequency offsets on a base station
3308494086Distortion and aliasing reduction for digital to analog conversion
3318494085Method and system for bandwidth calibration for a phase locked loop (PLL)
3328488794Method for access control to a scrambled content
3338483314Wireless apparatus and distortion compensation method used on time division duplex system
3348483313Transmission suppression
3358483310Method of and a device for precoding transmit data signals in a wireless MIMO communication system
3368477937Methods and systems for providing interference based physical-layer encryption
3378477871Radio station and active antenna array
3388467474Monitor for spectral degradation of transmitter or receiver
3398467473Power control techniques for wireless transmitters
3408462949Method and apparatus for secure display of visual content
3418462882Measurement of transmitter I/Q impairments using shared local oscillators
3428462881Method for digitally predistorting a payload signal and radio station incorporating the method
3438462880System and method for transmitter electromagnetic interference (EMI) reduction
3448457249Method and apparatus for crest factor reduction in telecommunications systems
3458451944Tomlinson harashima precoding with additional receiver processing in a multi-user multiple-input multiple-output wireless transmission system
3468451942Wireless transmission apparatus using cartesian loop
3478451941Communications device with separate I and Q phase power amplification having selective phase and magnitude adjustment and related methods
3488446980Distortion compensation circuit and a distortion compensation method
3498446979Predistortion with integral crest-factor reduction and reduced observation bandwidth
3508442150Measurement of transmitter impairments using offset local oscillators
3518442149Method for adapting digital data transmission parameters to measured repetitive noise
3528437425Distortion compensation device, distortion compensation method and wireless apparatus
3538437424Robust transmit/feedback alignment
3548432997Method and system of beamforming a broadband signal through a multiport network
3558428181Method and apparatus for optimizing transmitter power efficiency
3568428178Systems and methods for designing a sequence for code modulation of data and channel estimation
3578422680Method for validating encrypted communications via selection and comparison of source transmitter and destination receiver associated encryption keys
3588416882Digital amplitude control of vector generator
3598416881Effective signal interference plus noise ratio estimation for multi-order modulation
3608416874Method of operating a block transmission based communication apparatus
3618412259Outer loop transmit power control in wireless communication systems
3628411793Digital amplitude modulation
3638411792Digital predistorter for variable supply amplifier
3648411791Distortion and aliasing reduction for digital to analog conversion
3658406459Method and apparatus to mark a document using a combination between guilloches and watermarking, method and apparatus to read previous combination
3668406425Method and apparatus for minimizing co-channel interference
3678391405Symbol mapping method for repetition channel coding
3688385541Method of performing elliptic polynomial cryptography with elliptic polynomial hopping
3698385466Transmitting a signal from a power amplifier
3708385464Methods and apparatus for reducing average-to-minimum power ratio in communications signals
3718380144Systems and methods for digital predistortion in a dual band transmitter
3728369972Methods and apparatus to perform audio watermarking and watermark detection and extraction
3738369447Predistortion with sectioned basis functions
3748363751Communication method and communication system
3758363750Apparatus, method and computer program for error compensation
3768355461Method and device for the noise shaping of a transmission signal
3778351601Elliptic polynomial cryptography with secret key embedding
3788345795System and method of beamforming with reduced feedback
3798345794Encoded control channel information interleaving

2012

3808340214Method and apparatus for generating predistortion signal
3818331558Method of cipher block chaining using elliptic curve cryptography
3828331487Analog signal processor for nonlinear predistortion of radio-frequency signals
3838331485Spur cancellation in a digital baseband transmit signal using cancelling tones
3848325851Method for compensating signal distortion in an emitting payload
3858325850System and method for digital communications with unbalanced codebooks
3868315335OFDM spectral control
3878311149Method and apparatus for distorting input signal of digital predistortion (DPD) power amplifier in wireless communication system
3888311148Transmission signal generating apparatus, method, and program
3898306486Methods and apparatus for reducing the average-to-minimum power ratio of communications signals in communications transmitters
3908306225Quantum communication system
3918306150System and method for estimating a transmit channel response and/or a feedback channel response using frequency shifting
3928300824System and method for encrypting data using a cipher text in a communications environment
3938300820Method of embedding a digital watermark in a useful signal
3948300727Method and apparatus for selecting pre-coding vectors
3958300726Interpolation method and apparatus for increasing efficiency of crosstalk estimation
3968295395Methods and apparatus for partial interference reduction within wireless networks
3978295394Error signal formation for linearization
3988295393Device and method for transmitting/receiving pulse signal
3998295392Digital communication system, indoor unit, and outdoor unit
4008279971Determining a level of power reduction for a transmitter
4018270529Software-based spread spectrum signal processing
4028265681Outer loop transmit power control in wireless communication systems
4038265278System and methods for permitting open access to data objects and for securing data within the data objects
4048265197OFDM transmission methods in three phase modes
4058265196Noise injection circuit and method for signal processing
4068259847Extended non-return-to-zero serial channel signaling
4078259846Apparatus and method for generating a multicarrier communication signal having a reduced crest factor
4088254496Power amplifier and radio wave transmitter having the same
4098254495Codebook based precoding methods
4108249189Wireless transmission method and apparatus
4118243851Radio system and a method for relaying radio signals
4128243850Method and system for generating reference signals in a wireless communication system
4138238473Selective peak power reduction
4148238472Carrier separation frequency error adjustment for UL multiple carrier operation
4158233563Outphasing amplification of digital modulated signals in a radiofrequency transmission system
4168229029Transmitter with reduced spectral regrowth and associated methods
4178229028Apparatus for measuring IQ imbalance
4188229027Pre-distortion and memory compensation apparatus
4198229026Processor and processing method for signal transmission
4208223885Mobile wireless communications device with separate In-phase (I) and Quadrature (Q) phase power amplification and power amplifier pre-distortion and IQ balance compensation
4218223704Apparatus and method for assigning subchannels in an OFDMA communication system
4228218678Apparatus and method for digital pre-distortion, sharing feedback path in a multiple antenna wireless communication system
4238218676System and method for training pre-inverse of nonlinear system
4248208582Transmitter pre-distortion across wide transmit power dynamic range
4258204148Space-time digital power amplifier
4268199960Integrated speaker and display
4278189713Matrix power amplifiers for high speed wireless applications
4288185381Unified filter bank for performing signal conversions
4298184739Power series digital predistorter and control method therefor
4308175189Fast generalized decision feedback equalizer precoder implementation for multi-user multiple-input multiple-output wireless transmission systems
4318175188Reduced complexity multicarrier precoder
4328165245Method and apparatus for controlling transmission power in a communication system
4338155595Method for iterative interference cancellation for co-channel multi-carrier and narrowband systems
4348155317Encryption processing circuit and encryption processing method
4358155238Device for processing radio transmission data with digital predistortion
4368149950Method and system for baseband predistortion linearization in multi-channel wideband communication systems
4378144807Crosstalk cancellation in digital subscriber line communications
4388135090Transmission device
4398130864System and method of beamforming with reduced feedback
4408130851Bandwidth efficient coding for an orthogonal frequency multiplexing OFDM system
4418126081Signal modulation apparatus, signal modulation method, and computer program product
4428121217Method and apparatus for transmitting data in a time division duplexed (TDD) communication system
4438107555Pre-emphasis automatic adjusting system, method of adjusting pre-emphasis and pre-emphasis setting signal generating circuit
4448102941Peak suppression control apparatus
4458102940Receive frequency band interference protection system using predistortion linearization
4468098761Method and apparatus for optimizing transmitter power efficiency
4478095089Predictive transmitter calibration
4488094748Transceiver architecture with combined smart antenna calibration and digital predistortion
4498090051Combined feedback and feed-forward linearization of radio frequency (RF) power amplifiers
4508090050Radio communication system, receiver, receiving method, transmitter, transmitting method, and device for and method of calculating delay times for multi-carrier transmission

2011

4518085868Phase modulating and combining circuit
4528081712Method and apparatus for mapping of absolute power grant values in wireless communications
4538081701Method for sending and receiving communication signals, and apparatuses for sending and receiving communication signals
4548073075Transmission apparatus and transmission power control method
4558073073Optimized clipping for peak-to-average power ratio reduction
4568069489Method and system for facilitating search, selection, preview, purchase evaluation, offering for sale, distribution, and/or sale of digital content and enhancing the security thereof
4578068558Selective peak power reduction
4588064537Method and apparatus for dynamically adjusting a transmission power spectral density of pilot and data symbols
4598059749Systems and methods of RF power transmission, modulation, and amplification, including embodiments for compensating for waveform distortion
4608059748Multi-mode and multi-band transmitters for wireless communication
4618054912Large-dynamic-range lookup table for a transmitter predistorter and system and method employing the same
4628054911Method for edge formation of signals and transmitter/receiver component for a bus system
4638050648Superconducting digital mixer
4648050353Systems and methods of RF power transmission, modulation, and amplification, including embodiments for compensating for waveform distortion
4658050352Methods and apparatus for reducing peak-to-RMS amplitude ratio in communication signals
4668040973Transmitter including pre-distortion
4678036306Systems and methods of RF power transmission, modulation and amplification, including embodiments for compensating for waveform distortion
4688031804Systems and methods of RF tower transmission, modulation, and amplification, including embodiments for compensating for waveform distortion
4698031803Transmitter capable of suppressing peak of transmission signal
4708023588Adaptive predistortion of non-linear amplifiers with burst data
4718023587Device and method for pre-distorting a base-band digital signal
4728019015Linearization of RF power amplifiers using an adaptive subband predistorter
4738019014Pre-coding apparatus on account of adaptive estimation
4748018569Method and apparatus for inhibiting the piracy of motion pictures
4758009765Digital polar transmitter
4768009763Method and apparatus for equalizing a high speed serial data link
4778009761Unified modulator for continuous phase modulation and phase-shift keying
4788005162Dynamic digital pre-distortion system
4798000409Method and apparatus for improving power amplifier efficiency in wireless communication systems having high peak to average power ratios
4808000408Loop delay and gain control methods in closed-loop transmitters and wireless devices
4817991074Processing transmission signals in radio transmitter
4827991072Multi-carrier modem transmitter with controlled transmit signal quality degradation for improving stability of operation
4837986845Steganographic systems and methods
4847986749Method and apparatus for performing fast power control in a mobile communication system
4857965790Log-antilog circuit and method for producing an up-converted and amplified transmission signal
4867965789Reverse link power control for an OFDMA system
4877961881Apparatus and methods for including codes in audio signals
4887953180Transmission power control method and transmission apparatus
4897953178Apparatus and method for detecting signal in a broadband wireless access system
4907949070Method and apparatus for executing MIMO eigenmode transmission
4917949069Method, system and apparatus for applying hybrid ARQ to the control of transmit diversity
4927944991Constrained clipping for peak-to-average power ratio (crest factor) reduction in multicarrier transmission systems
4937944989Quadrature modulation apparatus, method, program, and recording medium
4947940857Method for limiting signal and transmitter
4957924942Power amplifier pre-distortion
4967924941Digital pre-distortion for orthogonal frequency division multiplexing (OFDM) signals
4977912148Transmission circuit and communication device
4987907508Graph-based method for allocating resources in OFDMA networks
4997903537Graph-based method for allocating resources in OFDMA networks
5007894547In-phase and quadrature-phase signal amplitude and phase calibration
5017889866Information leakage prevention apparatus and information leakage prevention method
5027889811Digital linear amplification with nonlinear components (LINC) transmitter
5037889810Method and apparatus for a nonlinear feedback control system
5047885408Protection of several identical calculations
5057885352Method and device for determining transmit power spectral density
5067881680Predictive transmitter calibration
5077881469Crypto-wireless-tag
5087881402Compensation for gain imbalance, phase imbalance and DC offsets in a transmitter
5097881401Transmitter arrangement and signal processing method
5107873118Apparatus and method for controlling peak to average power ratio (PAPR)
5117869543System and method for synchronization, power control, calibration, and modulation in communication transmitters
5127869540Method and apparatus for increased communication channel pre-emphasis for clock-like data patterns

2010

5137852967Automatic power output control circuit
5147848451Digital pre-distortion technique using nonlinear filters
5157844014Pre-distortion apparatus
5167840014Sound apparatus with howling prevention function
5177839951Dynamic crest factor reduction system
5187826554Digital transmitter
5197826553Multilevel LINC transmitter
5207822147Self-calibrating multi-port circuit and method
5217817755System, device and method for generating a logarithmic function according to a plurality of communication signals
5227813506System and methods for permitting open access to data objects and for securing data within the data objects
5237809081Digital pre-distortion technique using nonlinear filters
5247804915Distortion compensation circuit and method
5257792214Polar modulation transmitter circuit and communications device
5267792213Minimum IQ value limiting
5277787566Method and apparatus for improving power amplifier efficiency in wireless communication systems having high peak to average power ratios
5287787564Combined peak reduction equalizer and phase/amplitude pre-distortion
5297787562Method and apparatus for adaptive modulation of wireless communication signals
5307782977Automatic gain control apparatus and method in orthogonal frequency division multiplexing
5317778353Controller for a radio-frequency amplifier
5327773691Power control system for a continuous time mobile transmitter
5337764725Sub-banded ultra-wideband communication system
5347760816Automatic gain control using multiple equalized estimates dynamic hysteresis
5357746956Method and system for bandwidth calibration for a phase locked loop (PLL)
5367746955Power amplifier pre-distortion
5377738659Multiple transform utilization and application for secure digital watermarking
5387738594Method to maintain RF power amplifier linearity in varying load VSWR conditions without isolator
5397738420Apparatus and method for allocating subchannel and power in communication system, and transmitting apparatus
5407733979Average power control of wireless transmission having a variable duty cycle
5417733978Apparatus and method of dynamically adapting the LUT spacing for linearizing a power amplifier
5427729445Digital outphasing transmitter architecture
5437729444Method and apparatus for transmitting data in a time division duplexed (TDD) communication system
5447720225Table splitting for cryptographic processes
5457720175Apparatus and method for reducing peak-to-average power ratio in an OFDM communication system
5467720174Multi-stage code generator and decoder for communication systems
5477715560Systems and methods for hiding a data group
5487711068Multi-stage code generator and decoder for communication systems
5497711067Bandwidth-constrained signal conditioning
5507693922Method for preprocessing a signal and method for signal processing
5517693233Parallel Tomlinson-Harashima precoders
5527680270System for elliptic curve encryption using multiple points on an elliptic curve derived from scalar multiplication
5537680210Method for generating I/Q signal in a TDMA transmitter and corresponding modulator
5547680209Method and device for training an RF amplifier linearization device, and mobile terminal incorporating same
5557672453Data encryption by nonlinear transfer function
5567664201Digital automatic gain control
5577664200Method and system for minimizing effects of transmitter impairments in multiple input multiple output (MIMO) beamforming communication systems
5587660563Apparatus and method for calibrating mixer offset
5597657238Method and apparatus for modulating a radio signal using digital amplitude and phase control signals
5607649958Transmit signal generator and method
5617646826Type dependency modulation method with type control
5627643637Efficient code constructions via cryptographic assumptions

2009

5637639755Distortion compensating apparatus
5647634657Reducing the probability of undetected collisions in hash-based data block processing
5657634024Adaptive peak windowing for crest factor reduction in a communication system transmitter
5667634022Polar modulator and wireless communication apparatus using the same
5677627056System and method for orthogonally multiplexed signal transmission and reception on a non-contiguous spectral basis
5687623591Diversity receiver
5697620253Steganographic systems and methods
5707613250Distortion compensation apparatus
5717609780Method and apparatus for performing sequential closed loop multiple input multiple output (MIMO)
5727606539Adaptive predistorter coupled to a nonlinear element
5737606324Digital pre-distortion technique using non-linear filters
5747606323Carrier leak reduction transmitter circuit
5757606322Digital pre-distortion technique using nonlinear filters
5767596184Apparatus, system, and method for amplitude-phase synchronization in polar transmitter
5777593699Distortion/efficiency adaptation in a variable-data-rate radio transmitter
5787593480Transmission device and radio communication device
5797593478Low peak to average ratio search algorithm
5807593477Training sequence for linearizing an RF amplifier
5817593357Transmit processing using receiver functions
5827590190System and method for forward path gain control in a digital predistortion linearized transmitter
5837587044Differential power analysis method and apparatus
5847586996Method for controlling the power of the output signal from an amplifier system and the associated system
5857583754Method and system for broadband predistortion linearization
5867583753Methods and transmitters for loop-back adaptive pre-emphasis data transmission
5877580686Adaptive predistortion method and arrangement
5887577211Digital predistortion system and method for linearizing an RF power amplifier with nonlinear gain characteristics and memory effects
5897570710In-phase and quadrature-phase signal amplitude and phase calibration
5907570708Serdes auto calibration and load balancing
5917570707Digital delay element for delay mismatch cancellation in wireless polar transmitters
5927567625Apparatus and method for sub-carrier allocation in a multiple-input and multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) communication system
5937567623Differential space-time block coding apparatus with high transmission rate and method thereof
5947564922RF transmitter for efficiently compensating output power variation due to temperature and process
5957558334Enhanced hybrid class-S modulator
5967558332Adaptive controller for linearization of transmitter with impairments
5977555057Predistortion calibration in a transceiver assembly
5987551902Method and apparatus to increase the diversity order for a multi-carrier FDM system
5997551689Method and apparatus for improving power amplifier efficiency in wireless communication systems having high peak to average power ratios
6007551687Distortion compensating apparatus
6017551686Multiple polynomial digital predistortion
6027551683Adjusting data burst transmission rates
6037545880Multiple polynomial digital predistortion
6047542584Image processing method, image processing apparatus, program and recording medium that can reduce image quality degradation
6057542518Predistortion apparatus and method for compensating for a nonlinear distortion characteristic of a power amplifier using a look-up table
6067539269Method and apparatus for discrete power synthesis of multicarrier signals with constant envelope power amplifiers
6077535973Correction method and correction loop for a complex digital signal
6087532725Systems and methods for permitting open access to data objects and for securing data within the data objects
6097529316Transmitter
6107526090Secured radio communications method
6117519132Reduced complexity multicarrier precoder
6127519129Precoding of contention words in a fixed wireless access system
6137515648Transmitter and wireless communication apparatus using same
6147512192Phase conjugated vectoring of signals in telephone cables
6157505531Signal communications system and method for noisy links
6167500271Reproducing apparatus and information distribution system
6177499502Amplifier, information communication apparatus and amplification method
6187499499Method for multiple antenna transmission
6197496152Adaptive control apparatus
6207487356Digital watermarking system using scrambling method
6217486939Apparatus for removing distortions created by an amplifier
6227477702Apparatus, and associated method, for selecting a switching threshold for a transmitter utilizing adaptive modulation techniques

2008

6237471791Method for countermeasure in an electronic component using a secret key algorithm
6247471736Frequency based modulator compensation
6257469491Transmitter predistortion circuit and method therefor
6267469346Dual virtual machine architecture for media devices
6277469020Systems, methods, and apparatus for reducing dynamic range requirements of a power amplifier in a wireless device
6287463697Multicarrier transmitter and methods for generating multicarrier communication signals with power amplifier predistortion and linearization
6297451319System and method of watermarking a signal
6307433419ICI cancellation method for an OFDM system
6317430248Predistortion circuit and method for compensating nonlinear distortion in a digital RF communications transmitter
6327428230Time-division-duplexing type power amplification module
6337424116Method and apparatus for providing authentication in a communication system
6347418055Device and method for regulating the output power of mobile
6357409008Transmitting arrangement for mobile radio
6367403573Uncorrelated adaptive predistorter
6377403572Method of preventing interferring signal transmission of electronic products
6387400864Method and apparatus for compensating for phase variations caused by activation of an amplifier
6397400691Power control on a packet-by-packet basis in a CMOS transceiver
6407400690Adaptive phase controller, method of controlling a phase and transmitter employing the same
6417388929Method and apparatus for providing service availability information in a wireless communication system
6427388928OFDM pre-equalizing
6437382878System and method for data encryption
6447382835Power booster using peak suppression and pre-distortion for terminal radios
6457382833System for phase, gain, and DC offset error correction for a quadrature modulator
6467376202OFDM peak-to-average power ratio reduction by combined symbol rotation and inversion with limited complexity
6477376201System and method for reducing crest factor of signal
6487376200Method and apparatus for suppressing carrier leakage
6497366901Device, system, method and computer readable medium for identifying and authenticating a cellular device using a short-range radio address
6507366300Methods and apparatus for implementing a cryptography engine
6517362820Apparatus and method for modulating and digitally predistorting a signal in a multiple modulation schemes
6527359513Quantum cryptography protocol
6537359453System and method for transitioning between modulation formats in adjacent bursts triggering on ramps
6547346165Apparatus and method for generating scrambling code in mobile communication system
6557346122Direct modulation of a power amplifier with adaptive digital predistortion
6567340006Apparatus and method for reducing PAPR in OFDM communication system
6577340005Signal transmission apparatus and method
6587339881Method and apparatus for encoding compressible data for transmission over variable quality communication channel
6597336724Method for scaling peak power amplitudes in a signal and corresponding transmitter
6607333563Method and apparatus for improving power amplifier efficiency in wireless communication systems having high peak to average power ratios
6617333562Nonlinear distortion compensating circuit
6627333561Postdistortion amplifier with predistorted postdistortion
6637333560Method and apparatus for transmitting data in a time division duplexed (TDD) communication system
6647333559Digital predistorter for a wideband power amplifier and adaptation method
6657333557Adaptive controller for linearization of transmitter with impairments
6667330518Distortion compensation circuit, and a transmission apparatus including the same
6677327802Method and apparatus for canceling the transmitted signal in a homodyne duplex transceiver
6687324646Method and apparatus for film anti-piracy
6697324604System and method for shaping ultra wide bandwidth signal spectrum
6707321635Linearization of amplifiers using baseband detection and non-baseband pre-distortion
6717319724Radio equipment using image signals for compensating transmission signals
6727317764Method of signal transmission to multiple users from a multi-element array
6737316032Method for allowing a customer to preview, acquire and/or pay for information and a system therefor

2007

6747313235Device and method of applying a parity to encrypt data for protection
6757313196Method and system for baseband amplitude limiting
6767313195PAPR reduction method using bit reallocation
6777310382Linearized switch-based power amplifier
6787310381Power amplifier pre-distortion device and method for orthogonal frequency division multiplexing
6797310301Multi-carrier modulation with source information allocated over variable quality communication channel
6807308041Method and transmitter for transmitting radio signals
6817305555Smart card mating protocol
6827305046I/Q modulator with carrier predistortion
6837305041Peak suppression of multi-carrier signal with different modulation
6847298793Method and apparatus for I/Q mismatch calibration of transmitter
6857289576UWB transmitter including an echo detector
6867286613Process and device for modulating a carrier with amplitude and phase error compensation
6877280809Method for adjusting transmission parameters from a transmitter for digital radio signals
6887280612Digital branch calibrator for an RF transmitter
6897280611Nonlinear distortion compensating device
6907280497Methods and apparatus for coupling an earth terminal to a satellite
6917280496Methods and apparatus for coupling a satellite to an earth terminal
6927274750Gain and phase imbalance compensation for OFDM systems
6937274749Method and apparatus for the linearization of a radio frequency high-power amplifier
6947272195Method and circuit for controlling the peak power of a filtered signal in a single carrier data transmission system
6957269231System and method for predistorting a signal using current and past signal samples
6967263135Transmitting method and transmitter apparatus
6977260157Phase shifted transmitter architecture for communication systems
6987251291System and method for I/Q imbalance compensation
6997251290Adaptive controller for linearization of transmitter
7007248643Distortion compensator
7017242767Recording medium, data recording method and apparatus, data regenerating method and apparatus, and copy control method
7027242728Quadrature modulator carrier quadrature error detection method and quadrature modulation device
7037239671System and method for digital timing error correction in a communications system utilizing adaptive predistortion
7047236901Digital broadband frequency measurement
7057230997Semiconductor integrated circuit for communication, radio-communications apparatus, and transmission starting method
7067230996Transmitting circuit device and wireless communications device
7077227909High-quality power ramping in a communications transmitter
7087227908Information transmission apparatus, information transmission method, information reception apparatus, and information reception method
7097227907Antenna adaptation comparison method for high mobility
7107224747Generating coefficients for a prediction filter in an encoder
7117221757Method and system for accelerated data encryption
7127218681Method and apparatus for cross-talk mitigation through joint multiuser adaptive pre-coding
7137215717Distortion compensation circuit
7147215716Non-linear adaptive AM/AM and AM/PM pre-distortion compensation with time and temperature compensation for low power applications
7157215715System and method of signal wave shaping for spectrum control of an OFDM signal
7167212584Distortion compensator
7177212583Transmission of signal
7187212582Combining precoding with spectral shaping
7197206408Countermeasure method in an electronic component using a dynamic secret key cryptographic algorithm
7207200180Data transceiver with filtering and precoding
7217197084Precoding for a multipath channel in a MIMO system
7227194039Method for peak power reduction in multiple carrier communications systems
7237190791Method of encryption using multi-key process to create a variable-length key
7247190790Multiple module encryption method
7257184491Wireless communication apparatus
7267177430Digital entroping for digital audio reproductions
7277177429System and methods for permitting open access to data objects and for securing data within the data objects
7287177370Method and architecture for dual-mode linear and saturated power amplifier operation
7297177369Multipath communication methods and apparatuses
7307174013Efficient universal hashing method
7317170953Method and apparatus for a transceiver having a constant power output
7327170951Device and method for predistorting a transmission signal to be transmitted via a nonlinear transmission path
7337164728Method and device for forming transport frames from coded-signal frames and device for extracting coded signal frames
7347161988Method and apparatus for minimizing co-channel interference
7357158582Digital I/Q modulator having a predistortion

2006

7367149257Digital predistortion system and method for correcting memory effects within an RF power amplifier
7377146503System and method of watermarking signal
7387139326Image-canceling quadrature modulator and method
7397136628Adaptive digital predistortion method and apparatus for wireless transmitter
7407133466Amplifying apparatus
7417130357Apparatus and method for compensating error for analog quadrature modulator (AQM)
7427127620Power analysis resistant coding device
7437116726Method and apparatus for transferring multiple symbol streams at low bit-error rates in a narrowband channel
7447113551Transmitter with limited spectral regrowth and method therefor
7457109792Table-based pre-distortion for amplifier systems
7467106862Digital information hiding techniques for use with data streams carried over a data communication network
7477106806Reducing distortion of signals
7487099404Digital transmitter
7497099403Precoding for a non-linear codec
7507095858System and method for securely upgrading firmware
7517085377Information delivery in a multi-stream digital broadcasting system
7527068983Method for detecting quadrature modulator carrier leak adjusting point by geometrical analysis/calculation method, carrier leak adjusting method, and quadrature modulation apparatus
7537068729Multi-stage code generator and decoder for communication systems
7547065155Method and apparatus for a transceiver having a constant power output
7557065154Baseband predistortion method for multicarrier transmitters
7567065151Channel optimization system
7577062234Pre-distortion cross-cancellation for linearizing power amplifiers
7587058139Transmitter with transmitter chain phase adjustment on the basis of pre-stored phase information
7597046808Method and apparatus for detecting processing stages applied to a signal
7607046740Reduced complexity multicarrier precoder
7617046739Pre-distortion of input signals to form constant envelope signal outputs
76270467388-PSK transmit filtering using reduced look up tables
7637042958Digital time alignment in a polar modulator
7647039125Equalized SNR power back-off
7657035345Adaptive predistortion device and method using digital receiver
7666999523Multi-frequency transmitter using predistortion and a method of transmitting
7676996237Apparatus and methods for including codes in audio signals
7686993091Correction of DC-offset of I/Q modulator
7696987954Feedback compensation detector for a direct conversion transmitter
7706985704System and method for digital memorized predistortion for wireless communication
7716983051Methods for audio watermarking and decoding

2005

7726901514Secure oblivious watermarking using key-dependent mapping functions
7736898252IQ mismatch cancellation
7746879691Information autocompletion system
7756876746Encryption/decryption engine for multiple isochronous data streams
7766851063Digital video recorder employing a file system encrypted using a pseudo-random sequence generated from a unique ID
7776850252Intelligent electronic appliance system and method

2004

7786810407Optical boolean logic devices for data encryption
7796798844Correction of phase and amplitude imbalance of I/Q modulator
7806711216Method and apparatus for an ultra-wideband radio utilizing MEMS filtering

2003

7816654426Correction of nonlinearity of I/Q modulator
7826587821Methods for decoding watermark data from audio, and controlling audio devices in accordance therewith
7836542618Methods for watermark decoding
7846539095Audio watermarking to convey auxiliary control information, and media embodying same
7856532256Method and apparatus for signal transmission and reception

2002

7866496591Video copy-control with plural embedded signals
7876408019System and method for communication using noise
7886404898Method and system for encoding image and audio content
7896400827Methods for hiding in-band digital data in images and video
7906363159Consumer audio appliance responsive to watermark data
7916343138Security documents with hidden digital data

2001

7926330335Audio steganography
7936320872Serially buffered medium translator
7946289108Methods for detecting alteration of audio and images
7956263017Method and apparatus for signal transmission and reception
7966229897Apparatus and method of secured analog voice communication

2000

7976137831Method and apparatus for reducing receiver imposed distortion
7986081784Methods and apparatus for encoding, decoding, encrypting and decrypting an audio signal, recording medium therefor, and method of transmitting an encoded encrypted audio signal
7996035040System and method for decryption in the symbol domain
8006018582Optical transmission system implementing encrypting by deterministic chaos

1999

8015995539Method and apparatus for signal transmission and reception
8025917915Scramble/descramble method and apparatus for data broadcasting

1998

8035835590Method and apparatus for signal transmission and reception
8045796782Digital modulator with Root-Nyquist filter
8055727064Cryptographic system for wireless communications

1997

8065682404Method and apparatus for signal transmission and reception
8075668879Audio scrambling system for scrambling and descrambling audio signals
8085617476Audio scrambling system for scrambling and descrambling audio signals

1996

8095546423Spread spectrum digital transmission system using low-frequency pseudorandom encoding of the wanted information and spectrum spreading and compression method used in a system of this kind
8105493612Secure communication keying system

1995

8115432697Technique for controlling the symbolic dynamics of chaotic systems to generate digital communications waveforms
8125406627Digital data cryptographic system

1994

8135367516Method and apparatus for signal transmission and reception
8145345468Despreading technique for CDMA systems
8155341423Masked data transmission system
8165307370Secure cordless radio-telephone
8175305384Apparatus, system and method for transmitting secure signals over narrow spaced channels
8185299227Individual beacon identification system
8195297201System for preventing remote detection of computer data from tempest signal emissions
8205291555Communication using synchronized chaotic systems

1993

8215267312Audio signal cryptographic system
8225243650Method and apparatus for encryption/decryption of digital multisound in television
8235197098Secure conferencing system
8245185794System and method for scrambling and/or descrambling a video signal
8255181243System and method for communications security protection
8265177785Method and system for secure telecommunications

1992

8275168519System and method for securing DTMF transmission
8285166976System and method for detection of a pulse within a video signal
8295159634Cryptosystem for cellular telephony
8305150401Retrofittable encryption/decryption apparatus using modified frequency modulation
8315148478System and method for communications security protection
8325091942Authentication system for digital cellular communications
8335091938System and method for transmitting entertainment information to authorized ones of plural receivers

1991

8345056137Method and apparatus for encoding and decoding signals
8355036542Audio surveillance discouragement apparatus and method
8365008937Scrambled-communication system using adaptive transversal filters for descrambling received signals
8374991207One-way address transmission system of PCM music

1990

8384979188Spectrally efficient method for communicating an information signal
8394972469System and method for communications security protection
8404893339Secure communication system

1989

8414837821Signal transmission system having encoder/decoder without frame synchronization signal
8424825468Video noise jammer

1988

8434771455Scrambling apparatus
8444760598Coded data transmission system
8454754481Expanded partial response processing for analog signal enciphering and the like
8464752953Digital audio scrambling system with pulse amplitude modulation

1987

8474700387Broadcast system for scrambled programming signals
8484688257Secure wireless communication system utilizing locally synchronized noise signals
8494646147Method and apparatus for scrambling and unscrambling television signals
8504638357Audio scrambler

1986

8514623918Pay television system utilizing multi-frequency passive filters
8524608456Digital audio scrambling system with error conditioning
8534608455Processing of encrypted voice signals
8544589016FM television signal receiving circuit
8554581637PIN diode modulator
8564573648Ram air combustion steering system for a guided missile
8574573205Technique for secure communications on FM radio channels

1985

8584560832Telephone system
8594555805Secure mobile telephone system

1984

8604475208Wired spread spectrum data communication system
8614434322Coded data transmission system

1983

8624411017Secure mobile telephone system
8634401854Simultaneous transmission of an analog message signal and a digital data signal
8644398062Apparatus for privacy transmission in system having bandwidth constraint
8654370519Autokey generator for secret communication system

1982

8664365111Cipher apparatus for multiplex pulse code modulation systems
8674361729Narrowband analog message privacy system

1981

8684283602Cryptographically secure communication system
8694266095Binary code randomizing system
8704245346Communication system

1980

8714214126Cadence suppression system
8724211468Method and apparatus to provide a secure optical communication system
8734188580Secure communication system

1979

8744179586System of encoded speech transmission and reception
8754176316Secure single sideband communication system using modulated noise subcarrier
8764172968Electrical system
8774171513Secure communications system
8784152545Pulse position modulation secret communication system
8794133977Voice scrambler using syllabic masking

1978

8804126761Method of and means for processing an audio frequency signal to conceal intelligility
8814125744Communication system

1977

8824059726Process and apparatus for speech privacy improvement through incoherent masking noise sound generation in open-plan office spaces and the like
8834054751Masking noise generator
8844052565Walsh function signal scrambler
8854011408Audio transmission protection apparatus

1976

8863991268PCM communication system with pulse deletion
8873985958Secret telephony
8883979558Signaling system
8893978288Method and apparatus for the secret transmission of speech signals
8903976839Telephone privacy system
8913970791Voice controlled disappearing audio delay line
8923967067Secret telephony
8933967066380/33
8943965296Signaling system
8953958214Encoded echo-ranging signal generator
8963953678Speech component key signaling system with code combinations
8973953677Key signaling system with multiple pulse generators
8983944744Matrix coding secret signalling system
© 2017, ПАТ-Инфо, В.И. Карнышев
Дата формирования списка: 03.04.2017