СПИСОК патентов США - подгруппа МПК16 H04B1/58


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№ п/п Номер патента Название патента

2017

19608693Signal transmission arrangement with a transformer and signal transmission method
29564871Radio frequency filter

2016

39496914Polarization-diverse antennas and systems
49490870Signal transmission arrangement with a transformer and signal transmission method
59431992Method for designing coupling-function based millimeter wave electrical elements
69374056Multiband RF device
79318801Dual/wideband termination for hybrid transformer
89252833Power efficient driver architecture
99240844Optocoupler arrangement and input and/or output module

2015

109219596Front end module with active tuning of a balancing network
119191124Opto-isolator with correction circuit
129157792Photoelectric conversion device with protrusions
139106416Front end module with tone injection
149099979High-frequency circuit module
159083441Impedance balancing for transmitter to receiver rejection
169065546Parallel hybrid circuit

2014

178780691System and method for applying multi-tone OFDM based communications within a prescribed frequency range
188760240Method for designing coupling-function based millimeter wave electrical elements
198750171Femtocell/WLAN communication device

2013

208588135Integrated sensor networks with optical and wireless links
218471648Signal dividing device

2012

228116240Bi-directional bridge circuit having high common mode rejection and high input sensitivity

2010

237675384Composite right/left handed (CRLH) hybrid-ring couplers

2006

247042310High-pass branch of a frequency separating filter for ADSL systems

2005

256931122Single transformer hybrid system and method
266917682Method and device for echo cancelling
276888939Circuit for joint transmitting voice and data over a telephone line
286859051Systems and methods for impedance synthesis

2004

296829352Amplifier arrangement
306804349Hybrid transceiver circuit
316795495Line driver with output impedance synthesis
326785325DSL splitter providing test access to an interconnected subscriber loop and method
336775529Active resistive summer for a transformer hybrid
346771770Hybrid circuit for a broadband modem
356748076Method for separating narrowband and broadband services on a transmission link and a splitter element
366744831Adaptive electronic transmission signal cancellation apparatus for full duplex communication
376700387Systems and methods for impedance synthesis

2003

386647115Method and apparatus for an improved analog echo canceller
396633642Balance network directional coupler system and method
406573729Systems and methods for impedance synthesis
416522728Apparatus and method of implementing a universal home network on a customer premises ISDN bus
426507651Hybrid amplifier

2002

436477250Adjustable hybrid having dial tone alignment configuration
446470046Apparatus and method for a combined DSL and voice system
456426970Bi-directional signal coupler method and apparatus
466400822Linear, optical coupled line impedance circuit
476373908Adaptive electronic transmission signal cancellation apparatus for full duplex communication
486369650Impedance synthesis and DC biasing method and architecture for DSL/cable line drivers

2001

496327309Bidirection channels using common pins for transmit and receive paths
506292047Switching down conversion mixer for use in multi-stage receiver architectures
516282001Data access arrangement having improved transmit-receive separation
526208732Switched hybrid circuit for use with digital subscriber lines

2000

536163579Broadband modem transformer hybird
546111949Method of rapid automatic hybrid balancing
556067316Circuit for combined xDSL and other services

1999

565982215Analog signal transmission circuit
575974137AGC amplifier for two-wire line conditioner
585963638Adjustable hybrid having improved biasing configuration
595953412Method and apparatus for controlling line conditioner equalizer
605912924Bidirectional channels using common pins for transmit and receive paths
615896420Transmission apparatus having echo cancellation facility

1998

625771277Elevator car modem with transhybrid rejection
635742417Data access arrangement having improved transmit-receive separation
645734703Hybrid circuit and data communication apparatus
655719856Transmitter/receiver interface apparatus and method for a bi-directional transmission path
665717736Testing circuit and method for a codec hybrid balance network
675710811Speech circuit for subscriber telephone apparatus

1997

685666302Simultaneous bidirectional transmission apparatus for transmitting and receiving differential signals
695602912Telephone hybrid circuit

1996

705579336Bidirectional transreceiver for high speed data system
715579144Data access arrangement having improved transmit-receive separation
725546421Self compensating spread-spectrum hybrid
735528686Transformerless hybrid circuit having direct powered line-side amplifiers
745528685Transformerless hybrid circuit
755528683Method and circuit for implementing an impedance, in particular for DC telephonic applications
765526425Interface circuit between a four wire line and a two wire line

1995

775479504Low voltage balanced hybrid circuit with operational amplifiers
785473265Circuit configuration for the generation of a line terminating impedance
795465298Solid state isolation device using opto-isolators
805459787Circuit for the implementation of an impedance for a telephone speech circuit
815436887Digital full-duplex transceiver
825426697Duplex communication coupler system
835422950Remote terminal channel unit for telephone transmission lines
845420886Digital transmission equipment
855412688Process and circuit for detecting transmission using bi-directional differential links

1994

865347538Transceiver for bidirectional link, integrated circuit including the transceiver, and application to communication between units of a system
875333194Autoequalizing bidirectional-to-unidirectional hybrid network
885305378Arrangement for adjusting an adaptive digital filter included in a subscriber unit
895295186Termination circuit for a two-wire transmission line
905287406Hybrid circuit having a two-wire/four-wire converting function
915282157Input impedance derived from a transfer network
925280526Transformer-less hybrid circuit

1993

935271060Circuitry for interfacing telecommunications equipment to a communication channel
945255317Subscriber line interface circuit for serving ISDN subscribers using echo cancellers and POTS subscribers
955253291Hybrid balance and combination codec filter circuit
965253249Bidirectional transceiver for high speed data system
975187742Circuitry for interfacing telecommunications equipment to a communication channel

1992

985175763Two-wire/four-wire converter
995172411Two-wire/four-wire converter
1005136575Cancelling circuit and transmission system

1991

1015043977Method and a circuit arrangement for setting the subscriber line dummy impedances of programmable hybrid circuits
1025034978Universal channel unit switchable between two wire and four wire configurations

1990

1034918725Terminal impedance setting circuit for a two-wire to four-wire converting circuit
1044914693Telephone subscriber circuit
1054908820Non-reciprocal bidirectional duplexer
1064897871Apparatus for transmitting and/or receiving balanced signals on a two-wire telecommunication line
1074894864Interface circuit

1989

1084881262Electronic hybrid circuit
1094878244Electronic hybrid circuit
1104807283Method for adjusting the balancing impedance of a hybrid junction
1114798982Active symmetrical balance hybrid circuit
1124796296PCM coder and decoder having function of two-wire/four-wire conversion

1988

1134758822Bidirectional amplifier
1144757530Adaptive hybrid
1154756022Integrated circuit for the transmission of telephone signals
1164742540Circuit for switching between balanced networks

1987

1174715064Adaptive hybrid circuit
1184682356Apparatus for transmitting and/or receiving balanced signals on a two-wire telecommunication line
1194677666Adaptive line hybrids
1204670870Adaptive cancellation bridge circuit
1214669115Hybrid circuit and method

1986

1224622442Electronic hybrid having synthesized impedance circuitry
1234622441Two-wire/four wire communication interface with noise rejection
1244610010Control circuit for an adaptive hybrid control in a local area network
1254602338Impedance measurement in 4-wire to 2-wire converters
1264598172Telecommunication terminal
1274595803Bidirectional amplifier
1284595802Hybrid circuit
1294590334Supply circuit included in a DC-magnetized hybrid transformer
1304573168Balanced bidirectional or party line transceiver accommodating common-mode offset voltage
1314567331Electronic hybrid having synthesized impedance circuitry

1985

1324560843Electronic external line repeater
1334558185Subscriber line interface circuit with complex impedance
1344554416Low voltage two wire to four wire telephone circuit converter apparatus
1354540854Subscriber line interface circuit
1364539443Direct current magnetized hybrid transformer
1374500755Electric hybrid circuits
1384498018Balancing impedance included in a fork
1394491700Hybrid circuit in a telephone subscriber interface circuit

1984

1404485341Current limiter circuit
1414485277Apparatus for transmitting and/or receiving balanced signals on a two-wire telecommunication line
1424449218Analog/digital telecommunication subscriber station
1434433215Solid state hybrid circuits
1444431874Balanced current multiplier circuit for a subscriber loop interface circuit
1454424499Equalizer circuit for a repeater

1983

1464418249Four-wire terminating circuit
1474415777Hybrid circuit including capacitive charge-transfer means
1484395599Driving point impedance derived from a transfer impedance
1494388500Electronic hybrid
1504387277Four wire to two wire converter
1514381561All digital LSI line circuit for analog lines
1524380690Hybrid circuit
1534380062Communication system providing simultaneous two-way transmission
1544378472Two to four wire hybrid circuit arrangement for a pulse code modulated time multiplex telecommunication system
1554377858Digital two-to-four wire converter for full duplex signals
1564377730Tone elimination circuit
1574375015Improved electronic hybrid circuit
1584368362Automatic telephone loaded/nonloaded facility type identification circuit
1594368361Automatically adjustable bidirectional-to-unidirectional transmission network

1982

1604359609Circuit with feedback for controlling the impedance thereof
1614358644Bilateral current source for a multi-terminal intercom
1624358643Two to four wire hybrid circuit
1634357494Impedance canceller circuit
1644351060Automatic, digitally synthesized matching line terminating impedance
1654346267Hybrid circuit
1664346266Hybrid circuit
1674331843Apparatus for controlling and indicating the integrity of the connection of telephone subscribers to a switching system
1684331842Voice frequency repeater and term sets and other circuits therefor
1694326109Apparatus for coupling a two-way transmission path to a one-way transmitting path and a one-way receiving path
1704322586Transformerless line interface circuit
1714321431Trunk circuit with single coupling transformer
1724320498Auto balancing duplexer for communication lines
1734319093Transmission bridge for a subscriber set
1744314196Current limiting circuit
1754313225Opto-isolator hybrid circuit

1981

1764302636Subscriber's electronic line equipment comprising a two-wire-four-wire conversion circuit for a telephone exchange
1774301336Hybrid circuit
1784300023Hybrid circuit
1794297536Self-adjusting hybrid network
1804292479Separation and balance device for telephone exchanges
1814289939Longitudinal balance arrangements for two-to-four wire telecommunication line circuits
1824286114Two-wire resistance bridges for private line circuits
1834284859Adaptive electronic hybrid circuit
1844281219Telephone line circuit
1854278848Automatically adjustable bidirectional-to-unidirectional transmission network
1864278847Transformerless hybrid circuits
1874275276Automatically adjustable bidirectional-to-unidirectional transmission network
1884275270Speech detector for use in an adaptive hybrid circuit
1894272656Quasi-resistive battery feed for telephone circuits

1980

1904203012Hybrid circuit using current mirror circuits
1914203009Unbalanced/balanced converter circuits
1924192978Operational amplifier hybrid system
1934190747Signal corrected optocoupled device
1944182936Transformerless trunk circuit
1954181824Balancing impedance circuit

1979

1964178485Transformerless telephone line circuit
1974174470Electronic hybrid
1984163878Electronic hybrid and hybrid repeater with bridge circuit
1994142075Interface circuit and method for telephone extension lines
2004140875Four-wire, eight-leg bridge

1978

2014127750Apparatus for transmitting and receiving pulses
2024113996Voltage controlled current sources for active hybrid circuit
2034103118Autobalance hybrid circuit
2044096362Automatic cable balancing network
2054086447Electronic hybrid circuit for connecting a two-wire line to switching system
2064074087Bidirectional voice frequency repeater

1977

2074064377Electronic hybrid and hybrid repeater
2084053722Solid state two-wire/four-wire converter with common battery
2094041252Transformerless two-wire/four-wire hybrid with DC sourcing capability
2104039766Electric two-to-four wire conversion circuit for use in telephone systems
211403706520 Hz Ringdown solid state two-wire/four-wire converter
2124034166Transmission networks for telephone system
2134004109Hybrid circuit
2144002860Transmitting and receiving apparatus
2154001524Apparatus for transmitting and receiving pulses

1976

2163987257Optically coupled two-wire to four-wire hybrid lines
2173982080Automatic cable balancing network
2183973089Adaptive hybrid circuit
2193973088Wide-band hybrid network
2203970805Active hybrid circuit
2213942116Transceiver having improved voice actuated carrier and echo suppression circuit
2223934099Bias, feedback and network arrangements for hybrid circuits
2233932712Telephone transmission system
© 2017, ПАТ-Инфо, В.И. Карнышев
Дата формирования списка: 03.04.2017