Patents
Patents for H04B 3 - Line transmission systems (31,523)
08/2004
08/19/2004WO2004019505A3 Method and system for modifying modulation of power line communications signals for maximizing data throughput rate
08/19/2004WO2003056741A3 Apparatus and method for a low-rate data transmission mode over a power line
08/19/2004US20040162884 Home network system and method of providing operation history for same
08/19/2004US20040162691 Digital group delay compensator
08/19/2004US20040162684 Quality assessment tool
08/19/2004US20040161102 Echo canceller employing dual-H architecture having split adaptive gain settings
08/19/2004US20040161041 Method and system for modifying modulation of power line communications signals for maximizing data throughput rate
08/19/2004US20040160990 Method and system for timing controlled signal transmission in a point to multipoint power line communications system
08/19/2004US20040160949 Apparatus and method for transmitting voice data on ADSL subscriber Board
08/19/2004US20040160312 Power transfer apparatus for concurrently transmitting data and power over data wires
08/19/2004US20040160227 Apparatus and method for determining the status of an electric power cable
08/19/2004US20040160127 Internal power re-routing by reverse powering to overcome fault scenarios in submarine cable systems
08/18/2004EP1447942A2 Apparatus for coupling two switching modules in a data ring cell
08/18/2004EP1447941A2 Home network system and method of providing operation history for same
08/18/2004EP1446894A1 Echo canceller ensuring further reduction in residual echo
08/18/2004EP1197011B1 Power line communication system
08/18/2004EP1175784A4 A surveillance system
08/18/2004EP1147621B9 Communication station with automatic cable loss compensation
08/18/2004EP0953233B1 Disabling tone detector for network echo canceller
08/18/2004EP0797873B1 Method and apparatus for increasing receiver immunity to interference
08/18/2004CN2634731Y Digital signal transmission device
08/17/2004US6778671 Method of reference to echo time alignment for facilitation of echo cancellation
08/17/2004US6778602 Multi-pair gigabit ethernet transceiver
08/17/2004US6778590 Carrier changer and changing method
08/17/2004CA2357565C Metallic testing of a subscriber loop that provides both voice and digital subscriber line services
08/17/2004CA2345003C Method and system for distribution of wireless signals for increased wireless coverage using the power lines
08/12/2004WO2004068736A1 Method and arrangement for transmitting data within an open communication network
08/12/2004WO2004068638A2 Power line coupling device and method of using the same
08/12/2004WO2004055994A3 A power line communication system and method of using the same
08/12/2004WO2004054117A8 A Power Line Communication System and Method of Operating the Same
08/12/2004US20040158421 Crosstalk checking method
08/12/2004US20040158333 Network control system for home appliances
08/12/2004US20040157566 Phase conjugated vectoring of signals in telephone cables
08/12/2004US20040156602 Branching unit adapted to be integrated into a submarine telecommunication system, a submarine telecommunication system, and a method of reconfiguring a submarine telecommunication system
08/12/2004US20040156513 System and method for providing audio signals over conventional power lines
08/12/2004US20040156461 Multi-pair gigabit ethernet transceiver
08/12/2004US20040156446 Optimization of ultra-wideband communication through a wire medium
08/12/2004US20040156432 Processing a received signal at a detection circuit
08/12/2004US20040156431 Demodulator for a multi-pair gigabit transceiver
08/12/2004US20040155722 Powerline networking device
08/12/2004US20040155721 Method and apparatus for reducing electromagnetic radiation
08/12/2004US20040155720 Receiver
08/11/2004EP1444819A1 Method and system for classifying network connections
08/11/2004EP1444804A1 Method and system for spectrally compatible remote terminal adsl deployment
08/11/2004EP1177682B1 A status monitoring and data processing system suitable for use in a bi-directional communication device
08/11/2004EP1093609A4 Method and apparatus for digital subscriber loop qualification
08/11/2004CN2632967Y Medical emergency calling system by hospital bed
08/11/2004CN1520646A Method and devices for controlling loads connected to powr line
08/11/2004CN1520645A Clock synchronization over powerline modem network for multiple devices
08/11/2004CN1520070A State monitoring and data processing system available for two-way communicating appts.
08/11/2004CN1520055A Method and switch for switching in wideband through power line
08/10/2004US6775653 Method and apparatus for performing double-talk detection with an adaptive decision threshold
08/10/2004US6775596 Information processing system, information processing apparatus and method, recording medium, and program
08/10/2004US6775529 Active resistive summer for a transformer hybrid
08/10/2004US6774812 Two-wire type remote control system and display device
08/10/2004CA2372863C Signal detector with echo cancellation
08/10/2004CA2157279C A connector element for telecommunication
08/05/2004WO2004066539A2 Light fixture wireless access points
08/05/2004WO2004066518A2 Power line communication system and method
08/05/2004WO2004065559A2 Power conditioners and pseudo isolation for a two-wire processing network
08/05/2004WO2003087986A9 Crosstalk masking for digital subscriber loops
08/05/2004US20040153898 Method and system for providing error compensation to a signal using feedback control
08/05/2004US20040151427 Fiberoptic coupling
08/05/2004US20040151330 Audio interface device for public address systems
08/05/2004US20040151268 Method and system for processing a sampled signal
08/05/2004US20040151240 Method and system for signal processing using vector output from scalar data
08/05/2004US20040151239 Equalizing a signal for transmission
08/05/2004US20040150488 Double waveform method for driving signals through a transmission line
08/05/2004US20040150421 Terminating resistor device and a method for testing a terminating resistor circuit
08/05/2004DE10039702B4 Verfahren und Vorrichtung zur Optimierung der Einstellung der Verstärker in einem Kabelfernsehnetz Method and apparatus for optimizing the adjustment of the amplifier in a cable television network
08/04/2004EP1443709A2 Network control system for home appliances
08/04/2004EP1443708A2 Network control system for home appliance
08/04/2004EP1443676A2 Method and apparatus for reducing cross-talk
08/04/2004EP1443675A2 Method and apparatus for reducing noise in an unbalanced channel using common mode component
08/04/2004EP1443674A1 Echo cancellation with double-talk detection
08/04/2004EP1443497A1 Audio signal quality assessment method
08/04/2004EP1442569A1 Zf-based adaptive asynchronous receiver
08/04/2004EP1442308A2 Impedance stabilization network for determining the electromagnetic interfering radiation of a modem
08/04/2004EP1097561A4 Acoustic echo canceller
08/04/2004EP0960521A4 Apparatus and method for adapting an echo canceller in a communication system
08/04/2004CN2631124Y Wide-dynamic-range predistortion circuit
08/04/2004CN1518803A Method for multiple access and transmission in point-to-multipoint system on electrical network
08/04/2004CN1518800A Upstream communication system with controllable band pass filter properties
08/04/2004CN1160895C Method and apparatus for testing digital communication channel
08/04/2004CN1160873C Method and arrangement in analog line interface circuit
08/03/2004US6771775 Arrangement for communicating messages via a low-voltage electricity supply system and adapter
08/03/2004US6771772 Method and apparatus for fast network bulk delay and span estimation for line echo cancellation
08/03/2004US6771770 Hybrid circuit for a broadband modem
08/03/2004US6771725 Multi-pair gigabit ethernet transceiver
08/03/2004US6771708 Nonlinear compensator
08/03/2004US6771701 Adaptive filter divergence control in echo cancelers by means of amplitude distribution evaluation with configurable hysteresis
08/03/2004US6771699 Method for rapid carrier-frequency offset acquisition using a periodic training sequence
08/03/2004US6771591 Method and system for processing orthogonal frequency division multiplexed signals
08/03/2004US6771142 Network coupler
08/03/2004CA2252147C Method and system for sparing echo cancellers
07/2004
07/29/2004WO2004064256A1 Device for data exchange between a transmitter and a receiver
07/29/2004WO2004023702A3 System and method for optical data communication
07/29/2004WO2004010083A3 Sensors isolated by an intrinsically safe barrier
07/29/2004WO2002082712A3 Time synchronization for data over a powerline modem network
07/29/2004US20040146169 Digital music player