Patents
Patents for H04B 3 - Line transmission systems (31,523)
05/1998
05/27/1998EP0843933A2 Transmission of a digital information signal having a specific first sampling frequency
05/27/1998EP0843917A1 Improvements in or relating to power switching of optical fibre cable branching units
05/27/1998CN1183192A Adaptive filter for use in a TDM/TDMA receiver
05/26/1998USRE35809 Digital signal encoding with quantizing based on masking from multiple frequency bands
05/26/1998US5757936 Audio and video signal distribution system and method
05/26/1998US5757906 Method of canceling echoes and echo canceler
05/26/1998US5757905 Telephone set with circuit for suppression of howling and echo
05/26/1998US5757849 Timing recovery in a network-synchronized modem
05/26/1998US5757265 Multiple-cable field bus system
05/26/1998US5757249 Communication system having a closed loop bus structure
05/26/1998US5757246 Method and apparatus for suppressing passive intermodulation
05/22/1998WO1998021835A2 A method and an arrangement for adapting, from a dc point of view, a first circuit to at least one second circuit
05/22/1998WO1998021803A2 Improvements relating to signalling in electricity distribution systems
05/22/1998CA2271112A1 A method and an arrangement for adapting, from a dc point of view, a first circuit to at least one second circuit
05/20/1998EP0843480A1 Method used in a telecommunication network, termination unit realising the latter and a telecommunication network including such a termination unit
05/20/1998EP0843455A2 Method and apparatus for adaptive echo cancellation
05/20/1998EP0843444A2 Digital communication system using a trellis based, reduced state estimation method
05/20/1998EP0720768A4 A horizontally twisted-pair planar conductor line structure
05/20/1998EP0565526B1 Adaptive acoustic echo canceller
05/20/1998CN1182330A Echo Controlling apparatus of video conferencing system and control method using the same
05/19/1998US5754943 Cable loss equalization system used in wireless communication equipment
05/19/1998US5754540 Expandable integrated circuit multiport repeater controller with multiple media independent interfaces and mixed media connections
05/19/1998CA2088450C Cross polarization interference compensating device comprising decision feedback cross polarization interference cancellers
05/19/1998CA2081021C Optical communications link fault signalling
05/15/1998CA2219347A1 Method of adaptively adjusting the coefficients of a digital filter in an echo canceller
05/14/1998WO1998020658A2 Non-invasive powerline communications system
05/14/1998WO1998020612A1 System connector
05/13/1998EP0841799A2 Stereophonic acoustic echo cancellation using non-linear transformations
05/13/1998EP0841786A2 Technique for improving the blind convergence of an adaptive equalizer using a transition algorithm
05/13/1998EP0841758A1 Method of echo cancelling for a radio signal with constant envelope and associated devices
05/13/1998EP0840975A1 Assessment of signal quality
05/13/1998CN1181665A Variable-speed communication and reproduction system
05/13/1998CA2218934A1 Method used in a telecommunication network, termination unit realising the latter and a telecommunication network including such a termination unit
05/12/1998US5752229 Intelligent near-end speech detection
05/12/1998US5751768 Fractionally spaced equalizing circuits and method
05/12/1998US5751152 Method and apparatus for concurrently measuring near end crosstalk at two ends of a cable
05/08/1998CA2217093A1 Technique for improving the blind convergence of an adaptive equalizer using a transition algorithm
05/07/1998WO1998019444A1 Data communication equipment
05/07/1998WO1998013960A3 Pipeline communication system
05/06/1998EP0840539A1 Wired telecommunication equipment with electromagnetic interference protection
05/06/1998EP0840470A2 Optical network termination of a hybrid fiberoptic-coaxial access network
05/06/1998EP0840466A2 Echo canceller control in a satellite communication system
05/06/1998EP0840376A1 Alternating invertors for capacitive coupling reduction in transmission lines
05/06/1998EP0840318A2 Waveform equalizer
05/06/1998EP0839428A1 Reconfigurable on-demand telephone and data line system
05/06/1998EP0839413A1 Power line telephone communications system having on hook digital voiceband messaging
05/06/1998CN1180964A Device and method for vector equalization of OFDM signal
05/05/1998US5748876 System and method for testing acoustic modems with semantically encoded waveforms
05/05/1998US5748726 Echo canceller
05/05/1998US5748673 Data receiving apparatus
05/05/1998US5748671 Adaptive reference pattern for spread spectrum detection
05/05/1998US5747893 Termination scheme for twisted-wire pairs
05/05/1998CA2097059C Viterbi equalizer for radio receiver
05/05/1998CA2095025C Channel equalisation in particular for fading channels
05/04/1998CA2219703A1 Wire telecommunication equipment with protection against electromagnetic interference
04/1998
04/30/1998WO1998018211A1 Appliance adapted for power line communications
04/30/1998DE19746258A1 Echosteuervorrichtung eines Videokonferenzsystems und zugehöriges Steuerverfahren Echo control device of a video conferencing system and related control method
04/30/1998CA2216756A1 Optical network termination unit of a hybrid fiber/coax access network
04/29/1998EP0752169B1 Data transmission device in power supply cable networks
04/29/1998CN1180461A Branching unit for an optical fibre transmission system
04/29/1998CN1180460A Echo canceller having kalman filter for optimal adaptation
04/28/1998US5745564 Echo cancelling arrangement
04/28/1998US5745552 Line communication systems incorporating mains electricity conductors for communications
04/28/1998US5745549 Line break detection device and modem comprising such a device
04/28/1998US5745396 Pipelined adaptive IIR filter
04/28/1998US5745027 Data communication system employing carrier currents, in particular for a motor vehicle
04/28/1998US5745016 Method for improving power measurement implemented with a directional coupler at low power levels
04/23/1998WO1998017013A1 Interface device of bi-directional connection of currents carrying low voltage/radiofrequency
04/23/1998WO1998001961A3 Frequency domain signal reconstruction in sampled digital communications systems
04/22/1998EP0837570A2 Optical receiver capable of responding to both burst and continuous signals
04/22/1998EP0836967A2 Data transmission system
04/22/1998EP0594755B1 Power distribution line communication system for reducing effects of signal cancellation
04/22/1998CN1179863A Method of generating AC information for bus system, and transmission unit for carrying out method
04/22/1998CN1179848A Method and apparatus in coding digital information
04/22/1998CN1179653A Echo compensating method and apparatus
04/21/1998US5742713 Methods and filter for isolating upstream ingress noise in a bi-directional cable system
04/21/1998US5742417 Data access arrangement having improved transmit-receive separation
04/21/1998US5742225 Arrangement for signal transmission between a transmitting station and a receiving station
04/21/1998CA2130157C Adaptive equalizer and adaptive diversity equalizer
04/16/1998WO1998015901A1 System for dynamically adapting the length of a filter
04/15/1998EP0836302A2 Communication system having a closed loop bus structure
04/15/1998EP0836286A1 Circuit arrangement for acquiring a supply voltage from a bus
04/15/1998EP0835587A1 Method and apparatus for combatting ingress and multipath in a catv return channel
04/15/1998EP0835558A1 A data access arrangement having improved transmit-receive separation
04/15/1998EP0835552A1 Adaptive gain controller
04/14/1998US5740242 Echo canceler
04/14/1998US5740200 Apparatus for measuring transmission time utilized for data collection system
04/14/1998CA2072540C Equalizer for optically transmitted information signals
04/14/1998CA2063666C Optical signal transmission system, particularly optical cable television system, with monitoring and service-channel facilities
04/09/1998WO1998015068A1 Echo canceller with silence detection
04/09/1998WO1998015067A1 Echo path delay estimation
04/09/1998WO1998015056A1 A filter co-processor
04/09/1998DE19639580A1 Acoustic echo reduction method for hands-free telephone set
04/08/1998CN2278309Y Wire intercommunication used in multi-set parallel connection
04/07/1998US5737461 Methods and filter for isolating upstream ingress noise in a bi-directional cable system
04/07/1998US5737410 Method for determining the location of echo in an echo canceller
04/07/1998US5737409 Echo removing apparatus
04/07/1998US5737408 Echo cancelling system suitable for voice conference
04/07/1998CA2149604C Method and apparatus for estimating and adjusting the frequency response of telecommunications channels
04/02/1998WO1998014005A1 Multiple modulation format television signal receiver system