H04B 3 - Line transmission systems

Patents for H04B 3 - Line transmission systems (31,523)
01/1995
01/10/1995	CA1333937C Component audio/video system with timed control of plural peripheral devices
01/05/1995	WO1995001030A1 Mains signalling systems
01/05/1995	WO1995001011A1 Method and apparatus for testing telecommunications equipment using a reduced redundancy test signal
01/05/1995	CA2166113A1 Mains signalling systems
01/04/1995	EP0632602A2 Power line communications adapter
01/04/1995	EP0632601A2 Echo canceller
01/04/1995	CN1027335C Signal weighting system for digital receiver
01/03/1995	US5379324 System and method for calculating channel gain and noise variance of a communication channel
01/03/1995	US5379005 Flat cable to flat parallel wire cable
01/03/1995	US5378937 Equalizer for optical communication systems
01/03/1995	CA2034802C Arrangement and method for rapidly detecting double talk in long distance telephone communications system
01/03/1995	CA2032549C Drop testing in fiber to the home systems
01/03/1995	CA2022923C Hybrid circuit
12/1994
12/28/1994	EP0631414A1 Adaptive equalizer
12/28/1994	EP0631399A1 Method and apparatus for interference cancellation and adaptive equalisation in diversity reception
12/28/1994	EP0631383A2 Acoustic reproduction systems
12/28/1994	EP0630543A1 Circuitry for superimposing small, low energy signals and large, essentially higher energy signals.
12/28/1994	CN1027213C System and method for calculating channel gain and noise variance of a communication channel
12/27/1994	US5377231 Automatic gain control circuit for a digital baseband line equalizer
12/27/1994	US5377230 Extended bandwidth transmitter for crosstalk channels
12/27/1994	US5377227 Adaptive data recovery for spread spectrum systems
12/27/1994	US5376902 Interconnection structure for crosstalk reduction to improve off-chip selectivity
12/22/1994	WO1994029956A1 Decision feedback equalizer method and apparatus
12/22/1994	WO1994029955A1 Bridge-tap equalizer method and apparatus
12/22/1994	WO1994024777A3 Data transmission using capacitive coupling
12/22/1994	CA2140359A1 Bridge-tap equalizer method and apparatus
12/22/1994	CA2140356A1 Decision feedback equalizer method and apparatus
12/21/1994	EP0630137A1 System for the reception of a phase and amplitude modulated digital signal
12/21/1994	EP0630119A2 Echo canceller
12/21/1994	EP0630108A2 A method of expanding the frequency range of a digital audio signal
12/21/1994	EP0629328A1 Outbound signal detector system and method
12/21/1994	EP0607304A4 Multiple access telephone extension systems and methods.
12/21/1994	CN2185958Y Intercom by using broadcasting line communication
12/21/1994	CN2185957Y Multichannel intercom alarm for residence
12/20/1994	US5375147 Jitter compensating device
12/18/1994	CA2126044A1 Phase and amplitude modulation digital signal receiver system
12/15/1994	DE4319347A1 Communication system for a crane installation
12/14/1994	EP0629061A1 Optical receiving system
12/14/1994	EP0628170A1 Process for detecting non-linear behaviour in a digital data transmission path to be examined.
12/14/1994	EP0628145A1 Pipe for conveying a medium.
12/14/1994	EP0482003B1 Audio signal processor circuit
12/13/1994	US5373412 Electronic trip device comprising communication means
12/08/1994	WO1994028646A1 Equivalent circuit process for a transmission device for the bidirectional transmission of digital signals and arrangement for implementing the process
12/08/1994	WO1994027787A1 Grinding tape and method of manufacturing the same
12/07/1994	EP0627840A2 Echo canceller
12/07/1994	EP0627825A2 Multi-channel echo cancelling method and a device thereof
12/07/1994	EP0627141A1 High speed modem systems incorporating distribution preserving tomlinson encoding and decoding for secondary channels
12/07/1994	EP0627139A1 Feedback level estimator between loudspeaker and microphone
12/07/1994	EP0627136A1 Method and apparatus for ghost cancelling and/or equalizing.
12/07/1994	EP0378695B1 An initial training apparatus for use in a transmitter and receiver apparatus
12/06/1994	US5371789 Multi-channel echo cancellation with adaptive filters having selectable coefficient vectors
11/1994
11/30/1994	EP0626767A2 EMC filter for a balanced multi-wired telecommunication line
11/30/1994	EP0324029B1 Adaptive noise cancellation in a closed loop control system
11/30/1994	CN2184294Y Main machine of wired multi-calling conversation instrument
11/29/1994	US5369673 Framed digital signal regenerator suitable for microwave digital transmission installations
11/29/1994	US5369668 Fast response matched filter receiver with decision feedback equalizer
11/24/1994	WO1994027378A1 A method and echo canceller for echo cancellation with a number of cascade-connected adaptive filters
11/24/1994	DE4317043A1 Method and device for echo cancellation in transmission systems
11/23/1994	CN1095534A Method and apparatus of estimating channel quality in a receiver
11/22/1994	US5367395 Apparatus for detection and location of faults in two-way communication through single optical path
11/22/1994	US5367273 Adapter for video and audio transmission
11/22/1994	CA1333186C Power feed system in transmission line between terminals of three-terminal station
11/17/1994	EP0624960A2 A method and apparatus for imparting a linear frequency response to a signal
11/17/1994	EP0624292A1 Near-end communications line characteristic measuring system
11/17/1994	EP0624287A1 Modem including an equalizer for amplitude jitter
11/17/1994	DE4315594A1 System for transmitting pulses, in particular control pulses, on a radio-frequency basis
11/15/1994	US5365583 Method for fail-safe operation in a speaker phone system
11/10/1994	DE4337229C1 Power-feeding device
11/09/1994	EP0624005A2 High frequency blocking filter for low voltage main supply with carrier frequency information transmission
11/09/1994	EP0623968A1 Signal distribution device
11/09/1994	EP0623916A1 A method and apparatus for implementing a long-term synthesis filter
11/09/1994	EP0475984B1 Process for equalizing signals by means of test sequences
11/08/1994	US5363441 Technique for reducing echoes in conference communications
11/08/1994	US5363432 Transmission of broadband signals to subscribers using a telecommunications cable
11/08/1994	US5363412 Method and apparatus of adaptive maximum likelihood sequence estimation using filtered correlation synchronization
11/08/1994	US5363411 Receiver for digital radio communication
11/03/1994	DE3690413C2 Intermediate repeater for use in two-wire links of a dial-up telephone network and method for controlling the amplification of said repeater
11/02/1994	EP0622899A1 Data converter with minimum phase fir filter and method for calculating filter coefficients
11/02/1994	EP0622798A2 Signal equalizer
11/02/1994	EP0622778A2 Non-integer sample delay active noise canceller
11/01/1994	US5361394 Upstream signal control apparatus for cable television system
11/01/1994	US5361327 Waveform equalizer apparatus formed of neural network, and method of designing same
11/01/1994	US5360998 Magnetic field minimization in power transmission
10/1994
10/27/1994	WO1994024777A2 Data transmission using capacitive coupling
10/27/1994	WO1994024776A1 Method and apparatus for interfacing between a twisted pair and an intelligent cell
10/27/1994	DE4303360C1 Method for reducing quality losses
10/26/1994	EP0620956A1 Apparatus for reducing the risk of undesirable parameterdrift of an adaptive filter used for echo cancellation
10/26/1994	EP0617860A4 Inbound communications using electricity distribution network.
10/26/1994	CN2181138Y Zero-line broadcasting device
10/25/1994	US5359656 In a digital communication system
10/25/1994	US5359628 Channel impulse response estimator for use in an adaptive maximum likelihood sequence estimation receiver which is applicable to a communication system having a channel characteristic with rapid fluctuation
10/25/1994	US5359625 Spread spectrum communication system particularly-suited for RF network communication
10/25/1994	CA2001166C Bus coupler
10/25/1994	CA2000785C Digital automatic gain control
10/18/1994	US5357609 Voice communication system
10/18/1994	US5357144 Complementary logic circuit
10/18/1994	CA2014864C Training method for an echo canceller for use in a voice conference system
10/13/1994	WO1994023510A1 Apparatus and method for transmitting information between dual redundant components utilizing four signal paths
10/13/1994	WO1994023427A1 Spectral smoothing filter
10/12/1994	EP0619655A1 High frequency rejection filter for low voltage networks with signal transmission by a carrier frequency

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