Patents
Sitemap › H04 - Electric communication technique › H04B - Transmission › H04B 3 - Line transmission systems
Patents for H04B 3 - Line transmission systems (31,523)
08/1998
08/26/1998EP0860996A2 Adaptive signal processing method and circuit for a digital recording/reproducing apparatus
08/26/1998EP0860962A2 Adaptive equalizer
08/26/1998EP0860075A1 Energy monitoring and control system using reverse transmission on ac line
08/26/1998EP0860056A1 Cross talk interference cancellation in twisted pairs
08/26/1998EP0770285B1 Coilless bus coupler for an on-board power supply
08/26/1998CN2289350Y Theft-proof alarm positioning and range finding dual-purpose device for communication cable
08/25/1998US5799078 Echo canceller
08/20/1998WO1998036549A1 Method for automatically adapting levels of signals exchanged in a communication network
08/20/1998WO1998036515A2 Full duplex communication circuit with a transducer for simultaneously generating audio output and receiving audio input
08/20/1998WO1998036436A1 Emergency stop switch and emergency stop switch circuit
08/20/1998DE19705643A1 Aircraft cabin equipment control signal transmission system
08/19/1998EP0859473A2 Method for efficient calculation of power sum cross-talk loss
08/19/1998CN2288554Y Bidirectional controller for bus-intercom
08/19/1998CN1191046A Power line telephone communications sytem having on hook digital voiceband messaging
08/18/1998US5796820 Recovery of previous filter coefficients with smaller capacity memory
08/18/1998US5796819 Echo canceller for non-linear circuits
08/18/1998US5796814 Digital transmission system comprising a receiver with cascaded equalizers
08/18/1998US5796782 Digital modulator with Root-Nyquist filter
08/18/1998US5796778 Receiver circuit having adaptive equalizer with characteristics determined by signal envelope measurement and method therefor
08/18/1998US5796725 Echo canceller capable of cancelling an echo signal at a high speed
08/18/1998US5796716 Method and apparatus for simultaneous voice/data transmission
08/18/1998US5796604 System comprising a machine for the communication of pricing changes
08/18/1998CA2141272C Signal reception system comprising an adaptive filter
08/18/1998CA2077104C Reception of tdma digital data signal with compensation for channel variations
08/12/1998EP0858174A2 Method and system for transmitting data and energy
08/12/1998EP0858143A2 Monitoring device for mains-operated houshold devices
08/12/1998EP0857400A1 Variable length burst transmission over the physical layer of a multilayer transmission format
08/12/1998EP0756773B1 Process and apparatus for the low-energy interrogation of binary states over long lines
08/12/1998EP0538466B1 A system for echo cancellation comprising a ghost cancellation reference signal
08/11/1998US5794188 Speech signal distortion measurement which varies as a function of the distribution of measured distortion over time and frequency
08/11/1998US5793909 Optical monitoring and test access module
08/11/1998US5793807 Multimodulus blind eqalization using piecewise linear contours
08/11/1998US5793806 Transversal filter capable of processing an input signal high data rate
08/11/1998US5793801 In a digital communications system
08/11/1998US5793755 Echo suppressor for facsimile calls in a satellite network
08/11/1998US5793264 For use with variable lengths of transmission line
08/11/1998US5791790 Method and apparatus for providing print job buffering for a printer on a fast data path
08/06/1998WO1998034354A1 Method and apparatus for using state determination to control functional elements in digital telephone systems
08/06/1998WO1998034353A1 Dynamic echo canceller and parameter selection in telephony systems
08/06/1998WO1998034352A1 Bi-directional asynchronous telecommunication audio signal processing
08/06/1998WO1998034351A2 Bidirectional communication system having symmetrical transmission rates
08/06/1998WO1998033677A1 Method for data transmission in a vehicle
08/06/1998WO1998023064A3 Method and device for signal repetition
08/06/1998WO1998021803A3 Improvements relating to signalling in electricity distribution systems
08/06/1998DE19732050A1 Adaptive equaliser for input data signal
08/06/1998DE19732019A1 High velocity data receiver with adaptive signal equaliser
08/06/1998CA2279390A1 Bi-directional asynchronous telecommunication audio signal processing
08/06/1998CA2278928A1 Method and apparatus for using state determination to control functional elements in digital telephone systems
08/05/1998EP0856970A2 Communication collision detection
08/05/1998EP0856961A2 Testing telecommunications apparatus
08/05/1998EP0856954A2 Method of synchronizing for information transmission over power distribution networks
08/05/1998EP0856953A2 Noise resistant communication system for vehicle
08/05/1998EP0856919A2 Low crosstalk noise connector for telecommunication systems
08/05/1998EP0856834A2 Noise canceler
08/05/1998EP0856833A2 Noise canceling method and apparatus for the same
08/05/1998EP0856213A1 An adaptive dual filter echo cancellation method
08/05/1998EP0856212A1 Digital phase reversal detector
08/05/1998EP0755591B1 Determining echo return loss in echo cancelling arrangements
08/05/1998EP0744101B1 Method and apparatus for multiuser-interference reduction
08/05/1998EP0700605B1 Equivalent circuit process for a transmission device for the bidirectional transmission of digital signals and arrangement for implementing the process
08/05/1998CN2287354Y Power distribution carrier modem
08/05/1998CN1189721A Vehicle communicating device
08/04/1998US5790658 In a communications network
08/04/1998US5790657 Echo suppressor capable of suppressing an echo resulting from acoustic coupling without spoiling a natural sound of conversation
08/04/1998US5790632 Method and apparatus for echo canceling accounting for companding induced quantization error
08/04/1998US5790440 Apparatus for estimating filter coefficients
08/04/1998US5790358 Feeding pass switching circuit
08/04/1998US5790294 Line monitoring method and line monitoring apparatus
08/04/1998US5789993 Amplitude/frequency correcting device and corresponding frequency equalizer
08/04/1998CA2228332A1 Low crosstalk noise connector for telecommunication systems
08/04/1998CA2227722A1 Communication collision detection
08/04/1998CA2118654C Method of identifying an unknown system with a band-splitting adaptive filter and a device thereof
07/1998
07/31/1998CA2228204A1 Cdma receiver employing successive cancellation of training-signal interference
07/30/1998WO1998033311A1 Apparatus and method for non-linear processing in a communication system
07/30/1998WO1998033258A2 Power line transmission
07/30/1998WO1998033189A2 Quad cable construction for ieee 1394 data transmission
07/30/1998DE19703144A1 Verfahren zur Datenübertragung in einem Fahrzeug Method for data transmission in a vehicle
07/30/1998CA2278843A1 Power line transmission
07/29/1998EP0855806A2 Echo suppressor for the speach input of a dialogue system
07/29/1998EP0855110A1 An adaptive echo cancellation method
07/29/1998EP0855109A1 Co-channel interference reduction
07/29/1998CN1189262A Data access arrangement having improved transmit-receive separation
07/29/1998CN1189026A Data communication system, data communication device and method thereof
07/28/1998US5787118 Adaptive equalizer and adaptive diversity equalizer
07/28/1998US5787113 Mitigating clipping and quantization effects in digital transmission systems
07/23/1998WO1998032241A2 Circuit for two-wire / four-wire conversion
07/22/1998EP0854625A2 Apparatus and method for noise reduction for a full-duplex speakerphone or the like
07/22/1998EP0854587A1 Method and device for transformerless coupling of a subscriber to a bus
07/22/1998EP0853844A1 Echo cancelling system for digital telephony applications
07/22/1998EP0853805A2 Transmission, recording and reproduction of a digital information signal
07/22/1998EP0853777A1 Device for the operation of appliances, utilities and services within a building
07/22/1998CN1188352A Power-line communication system using pulse transmission on AC line
07/22/1998CA2227478A1 Echo suppressor for a speech input dialogue system
07/21/1998US5784684 Communication network
07/21/1998US5784455 Method and apparatus for echo compensator connection for telephone connections
07/21/1998US5784454 Arrangement for communication with a subscriber
07/21/1998US5784404 Intelligent repeater functionality
07/21/1998US5784361 Bi-directional asynchronous telecommunication audio signal processing
07/21/1998US5784304 Adaptively controlled filter
07/21/1998US5784192 Optical amplifying repeater
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