СПИСОК патентов США - подгруппа МПК16 H04L27/156


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№ п/п Номер патента Название патента

2017

19608772Method and apparatus for implementing space frequency block coding in an orthogonal frequency division multiplexing wireless communication system

2016

29498632Receiver and digital demodulation circuitry for an external controller useable in an implantable medical device system
39461853Method and device to control the gain of a radio receiver
49444673Methods and systems for down-converting a signal using a complementary transistor structure
59367716Information reproduction device and information reproduction method
69350591Method and system for down-converting an electromagnetic signal
79331878Frequency shift keying transmitter
89323560Interpreting I/O operation requests from pageable guests without host intervention
99319946System for efficient recovery of Node-B buffered data following MAC layer reset
109319262Methods and systems for down-converting a signal
119319256OOK modulation device and wireless transmitting device including the same
129306792Methods and systems for down-converting a signal
139288100Method and system for down-converting and electromagnetic signal
149246737Method and system for down-converting an electromagnetic signal
159246736Method and system for down-converting an electromagnetic signal

2015

169225568FSK demodulator
179225371Offset compensation for serial links
189203667Circuit and method for removing frequency offset, and communication apparatus
199184961FM analog demodulator compatible with IBOC signals
209143373Transport of an analog signal across an isolation barrier
219137065Systems and methods to mitigate phase noise
229086905Interpreting I/O operation requests from pageable guests without host intervention
239054924Method and apparatus for implementing space frequency block coding in an orthogonal frequency division multiplexing wireless communication system

2014

248831145Hart transmitter/receiver systems

2011

257898322Demodulator for a low power radio receiver

2005

266933776Signal demodulating method of a two-phase frequency shift keying (FSK) digital demodulator
276914478Demodulation method and demodulator
286891905Apparatus and method for FSK demodulation with integrated time and frequency tracking
296862317Modulation technique providing high data rate through band limited channels
306853693Method and apparatus for gain normalization of a correlation demodulator

2004

316819723Digital FM demodulator with reduced quantization noise
326795485Integrated QPSK/FSK demodulator
336757342Data demodulation
346714983Modular, portable data processing terminal for use in a communication network
356674786Data demodulation

2003

366658068Detection of EFM stream component widths
376654378Transaction control system including portable data terminal and mobile customer service station
386650712Low complexity method and apparatus for FSK signal reception
396633752Base band signal offset correcting circuit for FSK receiving apparatus and method thereof
406617917Caller-ID demodulation apparatus and method using multiple thresholds
416614768Enhanced mobility and address resolution in a wireless premises based network

2002

426433591Frequency-voltage conversion circuit and receiving apparatus

2001

436304136Reduced noise sensitivity, high performance FM demodulator circuit and method
446272184Non-coherent frequency shift keying detection scheme
456252438Frequency-voltage conversion circuit and receiving apparatus
466226369Telephone with novel FSK decoding means, simultaneous off-hook caller ID reception means, and set of configurable function key means

2000

476160857Demodulator for frequency shift keying signals
486064255Pulse counting FM demodulator
496058172Telephone with novel FSK decoding means, simultaneous off-hook caller ID reception means, and set of configurable function key means
506031418Method and apparatus for demodulating digital frequency modulation (FM) signals
516021162Vortex serial communications

1999

526002725M-ary FSK receiver
535933461Data receiving apparatus, demodulator circuit and integrated circuit
545933039Programmable delay line
555912926Method of and apparatus for controlling modulation of digital signals in frequency modulated transmissions
565905763Receiving apparatus and decoder

1998

575822378Receiver, a demodulator, and a demodulation method
585818881Digital frequency demodulator
595805017Baseband demodulation of M-ary frequency shift keyed signals and a receiver therefor
605790536Hierarchical communication system providing intelligent data, program and processing migration
615789991FSK modulating and demodulating apparatus wherein each binary data is represented by same number of cycles of modulated signal
625783967Frequency shift keying demodulation circuit using logic circuitry
635748670Method of demodulating chirp spread spectrum
645729576Interference canceling receiver
655726984Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones
665724001Method and apparatus for demodulating a frequency shift keyed signal

1997

675703525Low cost system for FSK demodulation
685684837Adjustable digital FSK demodulator
695680633Modular, portable data processing terminal for use in a radio frequency communication network
705679943Hand-held terminal with display screens, interactive screens, magnetic credit card readers, scanners, printers and handlers
715661759Digital FSK receiver using double zero-crossing
725657317Hierarchical communication system using premises, peripheral and vehicular local area networking
735650739Programmable delay lines
745633895Communication device with synchronized zero-crossing demodulator and method

1996

755586150Method and apparatus for symbol synchronization in multi-level digital FM radio
765567925Hand-held data capture system with interchangeable modules
775555276Method of and apparatus for controlling modulation of digital signals in frequency-modulated transmissions
785553099FSK detector for determining an increasing time period between adjacent pulses of an FSK modulated square wave pulse train
795550505Frequency shift keying (FSK) demodulator for use in low signal-to-noise ratio environments
805533062Method and apparatus for carrier tracking and demodulation
815533061Method and apparatus for detecting an FSK encoded carrier signal
825491724Mean phase predictor for maximum a posteriori demodulator
835483193Circuit for demodulating FSK signals

1995

845475307Frequency demodulator and method for asynchronously demodulating sample signals
855469112Communication device with zero-crossing demodulator
865436589Demodulator for frequency shift keyed signals
875400365Isk receiver

1994

885373246Digital FFSK demodulator
895365548Digital FSK transmitter
905365546Method of and apparatus for controlling modulation of digital signals in frequency-modulated transmissions
915359652Tone receiver comprising a switch capacitor zero crossing detector
925339333FSK demodulator using signal transitions
935333151High speed frequency-shift keying decoder
945331136Hand-held data capture system with interchangeable modules
955329242Method and apparatus for signal demodulation using time-intervals
965323104Method and arrangement for demodulating a frequency modulated signal
975313053Laser scanner module having integral interfacing with hand-held data capture terminal
985311556Digital FSK transmitter receiver and method of operating same
995303269Optically maximum A posteriori demodulator

1993

1005243299Variable speed asynchronous modem
1015218187Hand-held data capture system with interchangeable modules
1025204879High Speed data detection and clock recovery in a received multi-level data signal

1992

1035150382Frequency error detecting apparatus

1991

1045053717FSK demodulator
1055052020Method of and apparatus for controlling modulation of digital signals in frequency-modulated transmissions
1065046073Signal processing apparatus for recovering a clock signal and a data signal from an encoded information signal
1075023892System for detecting and correcting signal distortion
1085023562Digitizing circuit for demodulated digital data signals
1094985684Fully integrated digital FM discriminator

1990

1104897857FSK demodulating device

1989

1114887044Pulse counter type demodulator
1124864591Facsimile signal modulation detector
1134825452Digital FSK demodulator
1144813058FSK signal demodulator

1988

1154785255Digital FSK signal demodulator
1164777605Method and apparatus for identifying the components of a signal

1987

1174716376Adaptive FSK demodulator and threshold detector
1184696018Digital FM detector for digitized FM signals
1194675882FM demodulator
1204652775Adaptive threshold detector

1986

1214616187Frequency shift keying signal for a demodulator
1224574247FM Signal demodulator
1234568883Frequency-shift-keyed data detector

1985

1244561098Receiver for FFSK modulated data signals
1254554508Carrier detection circuit
1264551846FSK Demodulation circuit
1274533874Digital FSK demodulator using non-recursive transversal filter
1284517519FSK Demodulator employing a switched capacitor filter and period counters

1984

1294488238Selection stage of the AC signal of greater amplitude between two signals of different frequencies
1304485347Digital FSK demodulator
1314479092Digital frequency-shift keyed demodulator
1324472816FSK Discriminator
1334440987Computer and peripheral interface circuit
1344435682Frequency demodulator employing a circuit having a delay varying with the received frequency

1983

1354412339Zero-crossing interpolator to reduce isochronous distortion in a digital FSK modem
1364412338Frequency shift keyed detector system
1374378526Pulse code demodulator for frequency shift keyed data
1384368434Programmable digital detector for the demodulation of angle modulated electrical signals

1982

1394352194System and method for frequency discrimination
1404335354Sensitive demodulator for frequency shift keyed carrier signals
1414333150Signal receiving apparatus and method
1424309772Soft quantizer for FM radio binary digital signaling

1981

1434298985Digital filter bank detector
1444286224FM data demodulator including circuit for eliminating step distortion

1978

1454115738Digital frequency shift signal demodulator
1464097812Frequency selective detector circuit

1977

1474047114Digital detector
1484044202Plural frequency signalling systems
1494041406Method and apparatus for the determination of the transition of digital data signals modulated with two different signal frequencies
1504039959Two-tone decoder having high noise immunity
1514027266Digital FSK demodulator
1524021744Demodulator for frequency-keyed communication system

1976

1533980961Frequency demodulator for a FSK data transmission system
1543979685Frequency shift key demodulator
1553976996Conversion of FSK to NRZ coding
1563961277Frequency demodulator, especially for data-transmission system
1573939411Instantaneous frequency measurement system
1583936762Digital phase-lock loop systems for phase processing of signals
© 2017, ПАТ-Инфо, В.И. Карнышев
Дата формирования списка: 03.04.2017