СПИСОК патентов США - подгруппа МПК16 H04L25/497


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№ п/п Номер патента Название патента

2017

19553745High-speed signaling systems with adaptable pre-emphasis and equalization
29544442Lingering cancellation for data encoded audio signals

2016

39479363Partial response receiver and related method
49438320Iterative nonlinear precoding and feedback for multi-user multiple-input multiple-output (MU-MIMO) with channel state information (CSI) impairments
59407473Partial response receiver
69323560Interpreting I/O operation requests from pageable guests without host intervention
79319946System for efficient recovery of Node-B buffered data following MAC layer reset

2015

89185577Transmission apparatus, reception apparatus, wireless communication system, control program and integrated circuit
99166831Asymmetric complexity PHYs to reduce power dissipation in point-to-point communication links
109148322High-speed signaling systems with adaptable pre-emphasis and equalization
119137063High-speed signaling systems with adaptable pre-emphasis and equalization
129100048Method and device for transmission and reception in a multi-input and multi-output channel distributing a code word between several mapping matrices, and corresponding computer program
139094238High-speed signaling systems with adaptable pre-emphasis and equalization
149086905Interpreting I/O operation requests from pageable guests without host intervention
159054907Partial response receiver and related method
169054791Methods and apparatus for partial interference reduction within wireless networks

2014

178831124Multi-mode orthogonal frequency division multiplexing transmitter for highly-spectrally-efficient communications

2006

187127665Trellis code detector and decoder

2005

196963618Enhanced slice prediction feedback
206959038High-speed decoder for a multi-pair gigabit transceiver
216958781Mapping arrangement for digital communication system
226947482System and method for high-speed decoding and ISI compensation in a multi-pair transceiver system
236944237Multi-pair transceiver decoder system with low computation slicer
246934345Apparatus, method and system for correlated noise reduction in a trellis coded environment
256934308Precoding circuit and precoding-mulitplexing circuit for realizing very high transmission rate in optical fiber communication
266931072Upstream data transmission
276928106Phy control module for a multi-pair gigabit transceiver
286928018Dynamic register with low clock rate testing capability
296927565Dynamic register with IDDQ testing capability
306914948Media noise post-processor with varying threshold
316904110Channel equalization system and method
326879639Data transceiver with filtering and precoding
336865234Pair-swap independent trellis decoder for a multi-pair gigabit transceiver

2004

346823483Physical coding sublayer for a multi-pair gigabit transceiver
356807228Dynamic regulation of power consumption of a high-speed communication system
366798851Decoding for a non-linear codec
376795947Parity check outer code and runlength constrained outer code usable with parity bits
386778602Multi-pair gigabit ethernet transceiver
396771725Multi-pair gigabit ethernet transceiver
406751276Method and apparatus for decoding a digital signal
416738419Dynamic regulation of power consumption of a high-speed communication system
426737859Dynamic register with IDDQ testing capability
436731914Determination of transmitter distortion
446731691Multi-pair gigabit ethernet transceiver having adaptive disabling of circuit elements
456721916System and method for trellis decoding in a multi-pair transceiver system
466718502Precoders for partial response channels
476707848Demodulator for a multi-pair gigabit transceiver
486680980Supporting ME2PRML and M2EPRML with the same trellis structure
496680978Method and apparatus for nonlinear filtering and controlling the peak-to-average ratio

2003

506665351Circuit and method for providing a digital data signal with pre-distortion
516661727Dynamic register with low clock rate testing capability
526654413Phase synchronization method for extended partial response, and phase synchronization circuit and read channel circuit using this method
536647070Method and apparatus for combating impulse noise in digital communications channels
546636560Increased bit rate of telephony modems using controlled intersymbol interface
556618451Efficient reduced state maximum likelihood sequence estimator
566608840Use of modified line encoding and low signal-to-noise ratio based signal processing to extend range of digital data transmission over repeaterless two-wire telephone link
576595707Code conversion circuit for optical duobinary transmission and optical transmitter and receiver using same
586590942Least squares phase fit as frequency estimate
596563333Dynamic register with IDDQ testing capability
606556633Timing recovery for data sampling of a detector
616553085Means and method for increasing performance of interference-suppression based receivers
626532272RAM-search processor for intersymbol interference cancellation
636522705Processor for digital data
646522438High-speed optical duobinary modulation scheme

2002

656490069Transmission and reception of duobinary multilevel pulse-amplitude-modulated optical signals using subtraction-based encoder
666477200Multi-pair gigabit ethernet transceiver
676477199Dynamic regulation of power consumption of a high-speed communication system
686473214Methods of and apparatus for optical signal transmission
696459746Multi-pair gigabit ethernet transceiver
706456646Methods and systems for detecting codewords with intersymbol interference and imperfect timing
716456552Dynamic register with low clock rate testing capability
726434200TCM revisiting system and method
736424685Polar computation of branch metrics for TCM
746411657DSL transmitter with digital filtering using a Tomlinson-Harashima precoder
756411117Dynamic register with IDDQ testing capability
766408419Trellis code for extended partial response maximum likelihood (EPRML) channel
776393029Use of modified line encoding and low signal-to-noise auto ratio based signal processing to extend range of digital data transmission over repeaterless two-wire telephone link
786389078Configurable circuits for field programmable radio frequency communications equipment and methods therefor
796388786Method for generating duobinary signal and optical transmitter using the same method
806385255Coding system and method for partial response channels
816385239Adaptive equalizing circuit
826381265Field programmable modulator-demodulator arrangement for radio frequency communications equipment and method therefor
836377640Means and method for a synchronous network communications system
846377635Method and apparatus for viterbi detection of generalized partial response signals using partial matched filter and matched filter metrics
856377529Method for providing improved equalization for the reading of marks on optical data-storage media
866374035Signal processing device
876373906Method and apparatus for Viterbi detection of generalized partial response signals including two-way add/compare/select for improved channel speed
886373900Multi-pair transceiver decoder system with low computation slicer
896363129Timing recovery system for a multi-pair gigabit transceiver
906359897Control system for controlling the processing data of a first in first out memory and method therefor
916353640Reconfigurable radio frequency communication system

2001

926324225Timing recovery for data sampling of a detector
936324220Stabilized precoder for data transmission
946307905Switching noise reduction in a multi-clock domain transceiver
956307893System and method for transmit signal spectral shaping
966295316Automatic equalization system
976292654Digital noise blanker for communications systems and methods therefor
986289487Efficient modified viterbi decoder
996289047Dynamic regulation of power consumption of a high-speed communication system
1006272173Efficient fir filter for high-speed communication
1016253345System and method for trellis decoding in a multi-pair transceiver system
1026252904High-speed decoder for a multi-pair gigabit transceiver
1036249544System and method for high-speed decoding and ISI compensation in a multi-pair transceiver system
1046226332Multi-pair transceiver decoder system with low computation slicer
1056212119Dynamic register with low clock rate testing capability
1066201831Demodulator for a multi-pair gigabit transceiver
1076188735Data decoding apparatus and method utilizing a single channel maximum likelihood decoder
1086185261Determination of transmitter distortion
1096172534Gain control arrangement and method

2000

1106158027Enhanced noise-predictive maximum likelihood (NPML) data detection method and apparatus for direct access storage device (DASD)
1116151365Information detecting apparatus and method
1126150964M=10 (2,10), D=3.75 runlength limited code for multi-level data
1136114879Phase detectors
1146104766Noise predictive maximum likelihood (NPML) detection methods and apparatus based thereon
1156091765Reconfigurable radio system architecture
1166089749Byte synchronization system and method using an error correcting code
1176078624Judging method and a precoding apparatus
1186032284Trellis coding system for disc storage systems

1999

1196003147Weighted interleaving for correlated channel coding
1205999542Use of modified line encoding and low signal-to-noise ratio based signal processing to extend range of digital data transmission over repeaterless two-wire telephone link
1215995544Adaptive equalization for PRIV transmission systems
1225982818Method for implementing trellis codes for ISI channels
1235917855Method and apparatus for detecting an original signal from a data storage device
1245881363Method and apparatus for combatting ingress and multipath in a CATV return channel
1255878077Apparatus for high-speed simultaneous voice/data communications

1998

1265854812Method of digital transmission of messages using dynamic-range-limited precoding
1275852614Weighted interleaving for correlated channel coding
1285809081System and method for encoding data such that after precoding the data has a pre-selected parity structure
1295809033Use of modified line encoding and low signal-to-noise ratio based signal processing to extend range of digital data transmission over repeaterless two-wire telephone link

1997

1305696793Phase difference detection circuit for extended partial-response class-4 signaling system
1315689532Reduced complexity EPR4 post-processor for sampled data detection
1325671252Sampled data read channel utilizing charge-coupled devices
1335646698Pre-frame-comb as well as "pre-line-comb" partial-response filtering of BPSK buried in a TV signal
1345619534Method and apparatus for reducing precoding loss when using a post-comb filtering approach to reduce co-channel interference in high definition television transmission
1355604769Hybrid equalizer arrangement for use in data communications equipment
1365602583NTSC rejection filter with switched tomlinson precoder for reducing NTSC co-channel interference in ATV receivers

1996

1375576707Method and apparatus for detecting and decoding data in a PRML class-IV digital communication channel
1385565926Method and apparatus for communicating digital television signals using a signal constellation formed by four signal constellations placed in the quadrants
1395563664Pre-frame-comb as well as pre-line-comb partial-response filtering of BPSK buried in a TV signal
1405561468Multiplexed modulation system for robust audio digital television
1415559835Method and apparatus for encoding data for transfer over a communication channel
1425559561Coded modulation with shaping gain and tomlinson precoding
1435548600Method and means for generating and detecting spectrally constrained coded partial response waveforms using a time varying trellis modified by selective output state splitting
1445548284Information recording and/or reproduction apparatus
1455544177Viterbi decoding method and viterbi decoding apparatus
1465537424Matched spectral null codes with partitioned systolic trellis structures
1475521945Reduced complexity EPR4 post-processor for sampled data detection
1485521767Optimized equalizer system for data recovery and timing extraction in partial response read channels
1495513216Hybrid equalizer arrangement for use in data communications equipment
1505508752Partial response trellis decoder for high definition television (HDTV) system
1515502408Circuit for decoding 2T encoded binary signals
1525488633Intersymbol interference channel coding scheme
1535486825Convolutional encoders for modems which implement the "Cole code"

1995

1545465273Modem utilizing parity and convolutional encoder feedback
1555465059Method and apparatus for timing acquisition of partial response class IV signaling
1565448571Method and apparatus for determining byte synchronization within a serial data receiver
1575446758Device and method for precoding
1585440347Method and apparatus for randomizing training sequences to minimize interference in digital transmissions
1595434886Digital communication system
1605408500Method and apparatus for transmission of local area network signals over a single unshielded twisted pair
1615396519Method and apparatus for adaptively providing precoding and preemphasis conditioning to signal data for transfer over a communication channel
1625386202Data communication modulation with managed intersymbol interference

1994

1635311547Partial-response-channel precoding
1645291499Method and apparatus for reduced-complexity viterbi-type sequence detectors
1655278868Receiver for quadraphase modulation signals

1993

1665271041Method and apparatus for QPR carrier recovery
1675265125Signal detection apparatus for detecting digital information from PCM signal
1685257288Data transmission system
1695257272Time-varying modulo N trellis codes for input restricted partial response channels
1705249200Device and method for combining precoding with symbol-rate spectral shaping
1715228061Fast maximum likelihood decoder
1725214390Method and apparatus for partial response demodulation
1735195107Technique for compensating for intersymbol interference

1992

1745166955Signal detection apparatus for detecting digital information from a PCM signal
1755162812Technique for achieving the full coding gain of encoded digital signals
1765130862Coding apparatus for converting digital signals into ternary signals whose DC component is equal to zero
1775095497Technique for achieving the full coding gain of encoded digital signals
1785093843Digital communicationn system using partial response and bipolar coding techniques

1991

1795040191Partial response channel signaling systems
1805036524Binary data signal transmission system
1814984099Apparatus for decoding a transmitted signal

1990

1824961206Data modem system

1989

1834890299Fast timing acquisition for partial-response signalling
1844888779Matched spectral null trellis codes for partial response channels
1854888775Trellis codes for partial response channels
1864870414Even mark modulation coding method
1874860317Noise-reduction signal processing arrangement
1884860310Duobinary encoded signal decoder
1894837642Threshold tracking system
1904805190Detector logic circuit for a sychronous transmission system for data comprising ternary symbols and controlled partial response class 1, N=2 type intersymbol interference

1988

1914788694Trellis coding with substrates
1924786890Method and apparatus for implementing a PRML code
1934773082RF modem with improved binary transversal filter
1944768206Data transmission system
1954754481Expanded partial response processing for analog signal enciphering and the like
1964720839Efficiency data transmission technique

1987

1974710891Digital synthesis technique for pulses having predetermined time and frequency domain characteristics
1984677627Error correction scheme
1994646305High speed data modem using multilevel encoding
2004644564Decoding the output signal of a partial-response class-IV communication or recording device channel

1986

2014628474Modified duobinary filter using saw technique
2024617535PSK digital echo modulator with reduced memory capacity required

1985

2034558454Digital partial response filter
2044531221Premodulation filter for generating a generalized tamed frequency modulated signal
2054530094Coding for odd error multiplication in digital systems with differential coding
2064504872Digital maximum likelihood detector for class IV partial response

1984

2074472813Transmission system for intentionally violating a class IV partial response code to distinguish subsidiary signals from an error
2084461011Method and apparatus for converting binary information into a high density single-sideband signal
2094439863Partial response system with simplified detection

1983

2104406009Method and apparatus for converting binary information into a single-sideband 3-level correlative signal
2114367495Method and apparatus for magnetic recording and reproduction of digital signal

1982

2124351061Method of phase synchronization in a synchronous data transmission system, and apparatus for carrying out the method

1979

2134135057High density digital transmission system

1978

2144123710Partial response QAM modem
2154123625Digital regenerator having improving noise immunity
2164118686Error correction for signals employing the modified duobinary code
2174110691Apparatus and method for detecting errors in a 7-level correlative signal
2184099023Method for the regulation of the phase of a timing signal in a data transmission system
2194097687Partial response system
2204087752Digital communications tree searching detection
2214086587Apparatus and method for generating a high-accuracy 7-level correlative signal
2224079202Digital communication system
2234078159Modified duobinary repeatered span line

1977

2244055727Partial response, quadrature amplitude modulation system
2254041418Equalizer for partial response signals
2264013980Equalizer for partial response signals

1976

2273993953Apparatus and method for digitally generating a modified duobinary signal
2283952329Pulse compression recording
2293947767Multilevel data transmission system
© 2017, ПАТ-Инфо, В.И. Карнышев
Дата формирования списка: 03.04.2017