Patents
Sitemap › H04 - Electric communication technique › H04B - Transmission › H04B 3 - Line transmission systems
Patents for H04B 3 - Line transmission systems (31,523)
07/2003
07/29/2003CA2056328C Digital receiver with reduced memory requirement for viterbi equalization
07/24/2003WO2003061344A2 Multichannel echo canceller system using active audio matrix coefficients
07/24/2003WO2003061260A1 Verification of proper coupling of power line communication units to power circuits
07/24/2003WO2003061252A1 Detecting bridged taps by frequency domain reflectrometry-based
07/24/2003WO2003061234A1 Method for establishing a data transmission connection between xdsl transceivers
07/24/2003WO2003061153A1 Method and device for cancelling undesired common-mode signals on a transmission line
07/24/2003WO2003061152A1 Method and apparatus for acoustic echo cancellation in a communication system providing tty/tdd service
07/24/2003WO2003059036A2 Reduced latency interleaver utilizing shortened first codeword
07/24/2003WO2003036877A3 Method for controlling a plurality of units networked to give a network, and network comprising a plurality of networked units
07/24/2003WO2003005380A3 Device for the inductive transmission of electrical power
07/24/2003US20030140075 Echo canceller having an adaptive filter with a dynamically adjustable step size
07/24/2003US20030138063 Channel estimation sequence and method of estimating a transmission channel which uses such a channel estimation sequence
07/24/2003US20030138061 Voice and data exchange over a packet based network with timing recovery
07/24/2003US20030137986 Polling communication system and polling control method
07/24/2003US20030137946 Method and apparatus for acoustic echo cancellation in a communication system providing TTY/TDD service
07/24/2003US20030137925 Crosstalk mitigation in a modem pool environment
07/24/2003US20030137765 Information recording and reproducing apparatus and method, and signal decoding circuit
07/24/2003US20030137405 Communication scheme suppressing leakage electromagnetic fields
07/24/2003US20030137311 Determining cable attenuation and loss of signal threshold
07/24/2003CA2441404A1 Method and apparatus for acoustic echo cancellation in a communication system providing tty/tdd service
07/23/2003EP1330066A2 Equalizer Circuit for digitally transmitted signals
07/23/2003EP1330047A1 Component for power and information distribution
07/23/2003EP1330046A1 Method and apparatus for acoustic echo cancellation in a communication system providing tty/tdd service
07/23/2003EP1329732A1 Determining cable attenuation and loss of signal threshold
07/23/2003EP1224754B1 Method and device for continuously monitoring an optical transmission path
07/23/2003CN2562504Y Video frequency collector
07/23/2003CN1115795C Echo canceller with silence detection and echo cancelling method
07/23/2003CN1115794C Method and arrangement for adapting, from DC point of view, first circuit to at least one second circuit
07/22/2003US6597787 Echo cancellation device for cancelling echos in a transceiver unit
07/22/2003US6597732 High-speed modem with uplink remote-echo canceller
07/22/2003US6597282 Spread spectrum transmission system
07/17/2003WO2003058902A2 Timing control in data receivers and transmitters
07/17/2003WO2003058842A1 Simple adaptive hybrid circuit
07/17/2003WO2003058828A2 Signal quality indicator on a powerline modem
07/17/2003WO2002037701A9 Utilizing powerline networking as a general purpose transport for a variety of signals
07/17/2003US20030133498 Method for setting up a data transmission link between xDSL transceivers
07/17/2003US20030133473 Power line communication system
07/17/2003US20030133467 Timing control in data receivers and transmitters
07/17/2003US20030133404 Pre-distortion method for telecommunication system and transmitter for mobile terminal of MC-CDMA telecommunication system
07/17/2003US20030132836 Magnetic field based power transmission line communication method and system
07/17/2003US20030132812 Device for broadband electrical signal transmission using a bi-directional transmission system
07/17/2003US20030132757 Cable-testing adapter
07/17/2003CA2471255A1 Timing control in data receivers and transmitters
07/16/2003EP1328083A1 Pre-distortion method for an MC-CDMA uplink
07/16/2003EP1166433B1 Signal processing
07/16/2003EP0922346B1 Improvements in, or relating to, multi-carrier transmission systems
07/16/2003EP0706729B1 Signal conditioning apparatus
07/16/2003CN2561168Y High-speed parallel communication connecting apparatus
07/16/2003CN1430832A Diversity reception employing periodic testing
07/16/2003CN1430819A Method and device for conditioning electric installations in buildings for rapid transmission of data
07/16/2003CN1430815A TURBO decoder with decision feedback equalization
07/16/2003CN1430338A Serial port wire with monitoring interface
07/16/2003CN1115039C Handfree phone
07/16/2003CN1115027C Adaptive equalizer
07/16/2003CN1115014C Channel characteristics inference device
07/15/2003US6594360 Circuit configuration for two-wire/four-wire conversion
07/15/2003US6594359 Circuit for eliminating echo and side tones in a switching system
07/15/2003US6594321 Electrical clipper
07/15/2003US6594304 Adaptive configurable class-A/class-B transmit DAC for transceiver emission and power consumption control
07/15/2003US6593750 Interface for cable testing
07/15/2003CA2318189C Catv power inserter
07/10/2003WO2003056741A2 Apparatus and method for a low-rate data transmission mode over a power line
07/10/2003WO2003056715A1 Controlling of data transmission voltage level by cutting principle in low voltage net
07/10/2003WO2003034608A3 Arrangement for connecting a powerline data transmission device or a repeater in a live low-voltage mains network
07/10/2003WO2003019888A3 Adaptive equalizer for use over a range of data rates
07/10/2003WO2002011265A9 Device docking apparatus and method for using the same
07/10/2003US20030131156 Appliance data collecting system
07/10/2003US20030129978 Communication system, communication terminal and communication method
07/10/2003US20030128781 Means and method for precursor ISI cancellation
07/10/2003US20030128767 Communication system between integrated circuit devices for propagating data in serial
07/10/2003US20030128038 Capacitance monitoring systems
07/10/2003US20030127913 Digital subscriber line alternating current EMI/RFI broadband noise eliminator
07/10/2003CA2469811A1 Controlling of data transmission voltage level by cutting principle in low voltage net
07/09/2003EP1326348A1 Power line communication system and power line branching apparatus
07/09/2003EP1326147A2 Control and supervisory signal transmission system
07/09/2003EP0995287B1 Device and method for determining characteristics of a digital subscriber line
07/09/2003EP0746934B1 A termination network and a control circuit
07/09/2003CN2560177Y Interface circuit for electric modulator demodulator
07/09/2003CN2560148Y Electric intelligent protecting & long controlling system
07/09/2003CN1429004A User access device of wide-band co-axial symmetrical modem
07/09/2003CN1429001A Wide-band co-axial symmetrical modem
07/09/2003CN1428749A Control and monitoring signal transmission system
07/09/2003CN1114331C Channel allocation method and circuit for testing trunk line in radio communication system
07/09/2003CN1114024C Driving system for partition wall system
07/08/2003US6590976 Two-step algorithm for training an echo cancellation filter
07/08/2003US6590975 Echo canceller
07/08/2003US6590932 Methods, receiver devices and systems for whitening a signal disturbance in a communication signal
07/08/2003US6590862 Line interfacing apparatus with N+1 configuration
07/08/2003US6590604 Personal videoconferencing system having distributed processing architecture
07/08/2003US6590494 Electronic device
07/08/2003US6590493 System, device, and method for isolating signaling environments in a power line communication system
07/08/2003CA2310092C Method and system for testing a transmission line in a non-addressable network for continuity
07/03/2003WO2003055096A1 Coupling circuit arrangement for data communication over power lines
07/03/2003WO2003055095A1 High-frequency data transmission
07/03/2003WO2003017047A3 Method and apparatus for remote sexual contact
07/03/2003WO2000064131A3 Predicting performance of telephone lines for data services
07/03/2003US20030123674 Gain control method for acoustic echo cancellation and suppression
07/03/2003US20030123650 Simple adaptive hybrid circuit
07/03/2003US20030123649 Echo cancellation using a variable offset comparator
07/03/2003US20030123590 Control and supervisory signal transmission system
1 ... 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 ... 316