Patents
Sitemap › H04 - Electric communication technique › H04B - Transmission › H04B 3 - Line transmission systems
Patents for H04B 3 - Line transmission systems (31,523)
10/2003
10/22/2003CN1451193A Assembly for transmitting inf ormation via a Low-voltage power supply network
10/22/2003CN1451186A Guides for RF magnetic flux
10/22/2003CN1125537C Transmission of FM video signals over various lines
10/22/2003CN1125517C Electrical connector
10/21/2003US6636605 Echo and distortion cancellation arrangement
10/21/2003US6636604 Method and device for suppressing echo in a hands free device such as a telephone
10/16/2003WO2002052861A3 Dvd-asi signal inverting adapter and system
10/16/2003WO2002003638A8 Method and digital circuit for transmitting a plurality of bit sequences to be transmitted via several bus lines
10/16/2003US20030195668 Method and system for exchanging data in a vehicle train via a PLC data bus
10/16/2003US20030193902 Method and arrangement to estimate tranmission channel characteristcs
10/16/2003US20030193366 Demodulating
10/15/2003EP1353462A2 Jitter buffer and lost-frame-recovery interworking
10/15/2003EP1353378A1 Alternating invertors for capacitive coupling reduction in transmission lines
10/15/2003EP1352493A1 Crosstalk identification for spectrum management in broadband telecommunications systems
10/15/2003EP1131900B1 Improvements in, or relating to, vdsl transmission systems
10/15/2003CN2580692Y Casing for communication equipment
10/15/2003CN2580681Y Structure of wave-impedance for low voltage electric power line
10/15/2003CN1449603A Method and apparatus for processing a modulated signal using an equalizer and a rake receiver
10/15/2003CN1449123A Earth screen communicating technique
10/15/2003CN1449122A Amplitude limiter for predicting parallel branch and amplitude limiting method
10/15/2003CN1124577C Site apparatus and site bus-line system, and method for controlling site apparatus therefor
10/14/2003US6633945 Fully connected cache coherent multiprocessing systems
10/14/2003US6633228 Communication system for simultaneous two-channel transmission of data between subscribers
10/14/2003CA2257764C Network architecture for providing two-way broadband communications
10/09/2003WO2003084143A1 Method for separating multiple home networks
10/09/2003WO2003084117A1 Dmt system for reducing far end crosstalk
10/09/2003US20030190888 Method and system for reducing latency when initiating real-time media sessions
10/09/2003US20030190110 Method and apparatus for providing inductive coupling and decoupling of high-frequency, high-bandwidth data signals directly on and off of a high voltage power line
10/09/2003US20030190040 Apparatus and an accompanying method for use in a long-haul echo control device for detecting changes in path length and compensating the performance of an echo canceller therein
10/09/2003US20030190000 Digital communication device
10/09/2003US20030189978 Phase difference based frequency correction channel detector for wireless communication system
10/08/2003EP1351409A1 Power line communication modem
10/08/2003EP1351408A1 Digital point-to-multipoint data transmission system on an electric network
10/08/2003EP1350382A2 Power cutback configuration of digital subscriber line transceivers using public switched telephone network signaling
10/08/2003EP1350381A2 Interfacing fiber optic data with electrical power systems
10/08/2003EP1350339A2 Double-talk and path change detection using a matrix of correlation coefficients
10/08/2003EP1350334A2 Network quality of service localizer
10/08/2003EP1350329A1 Inductive coupling of a data signal to a power transmission cable
10/08/2003EP1350153A2 System and method for device co-location discrimination
10/08/2003EP1147621B1 Communication station with automatic cable loss compensation
10/08/2003EP1046272B1 Methods and apparatus for improved echo suppression in communications systems
10/08/2003CN2579089Y Carrier modem through power line
10/08/2003CN2579088Y Low-babble communication signal channel unit
10/08/2003CN1447572A Left word and short message service for fixation telephones and its receiving set
10/08/2003CN1447566A DSP receiving equalzation circuit suitable to Ethernet
10/08/2003CN1447533A Method for simulating cross talk loss at far and near ends of twisted-pairs in designing high-speed data communications system
10/08/2003CN1447532A Methof for simulating return loss of twisted-pairs in designing high-speed data communication system
10/08/2003CN1447331A Equilizer and reproduced signal processor
10/08/2003CN1123741C Communicating assembly of multiple air conditioners system and its initial operation method
10/07/2003CA2302367C Controllable delays in multiple synchronized signals for reduced electromagnetic interference at peak frequencies
10/02/2003WO2003081801A1 Parametric ring emitter
10/02/2003WO2003081394A2 Meter monitoring and tamper protection system and method
10/02/2003WO2003079751A2 Slicing algorithm for multi-level modulation equalizing schemes
10/02/2003WO2003019810A3 Adaptive equaliser for reducing distortion in a communication channel
10/02/2003WO2002039629A3 Channel time calibration means
10/02/2003US20030185291 Equalizer and reproduction signal processing device
10/02/2003US20030185287 Radio relay apparatus
10/02/2003US20030185160 Technique for use in an echo canceller for providing enhanced voice performance for mobile-to-mobile calls in a GSM environment through use of inter-canceller communication and co-ordination
10/02/2003US20030185027 Power line communication modem capable of simultaneously supplying power and exchanging data
10/02/2003US20030184850 Optical amplifier having various control circuitry
10/02/2003US20030184447 Method for transmitting data from at lest one sensor to a control unit
10/02/2003US20030184433 Power line communication system
10/02/2003US20030184372 Distortion compensating apparatus
10/01/2003EP1349344A2 Late frame recovery method
10/01/2003EP1349335A2 Selection of interpolation method for multicarrier reception
10/01/2003EP1349291A2 Adaptive gain control based on echo canceller performance information
10/01/2003EP1245084B1 Method and apparatus for rf common-mode noise rejection in a dsl receiver
10/01/2003EP1224514B1 Yarn processing system
09/2003
09/30/2003US6629032 Vehicular communication system for communicating information among electronic devices installed in vehicle
09/30/2003US6628783 Filter arrangement applicable to ADSL splitters
09/30/2003US6628781 Methods and apparatus for improved sub-band adaptive filtering in echo cancellation systems
09/30/2003US6628780 Echo cancellation in the network for data applications
09/30/2003US6628779 Method and system for scaleable near-end speech cancellation for tip and ring tone signal detectors
09/30/2003US6628754 Method for rapid noise reduction from an asymmetric digital subscriber line modem
09/30/2003US6628707 Adaptive equalizer system for short burst modems and link hopping radio networks
09/30/2003US6628704 Equalizer training for ADSL transceivers under TCM-ISDN crosstalk environment
09/30/2003US6628703 Media independent modular communication repeater system
09/25/2003WO2003079493A2 Protecting medium voltage inductive coupler device
09/25/2003WO2003041323A8 Adsl pre-qualification method comprising echo-canceller optimisation with maximum selectivity
09/25/2003WO2003009490A3 Device for improving the transmission properties of a bundle of electrical data lines and a system for transmitting data
09/25/2003US20030179817 Method of transmitting signals for a magnetic levitation train
09/25/2003US20030179810 Coder and coding method for use in spread spectrum communications systems
09/25/2003US20030179714 Meter monitoring and tamper protection system and method
09/25/2003US20030179080 Facilitating communication of data signals on electric power systems
09/25/2003CA2479198A1 Protecting medium voltage inductive coupler device
09/24/2003EP1346553A1 Audio signal quality enhancement in a digital network
09/24/2003EP1050164B1 Catv power inserter
09/24/2003CN1122397C Circuit for eliminating echo and side tone in switch system
09/23/2003US6625284 Comfort noise generating apparatus
09/23/2003US6625279 Apparatus and method of estimating echo path delay
09/23/2003US6625263 Method, device for detecting the calling of a telephone and modem including such a device
09/23/2003US6625206 Simultaneous bidirectional data transmission system and method
09/23/2003US6625116 System, methods and apparatus for increasing the data rate on an existing repeatered telecommunication channel structure
09/23/2003US6624745 Low pass filter for a universal home network on a customer premises european installation bus
09/23/2003US6624721 Apparatus for acquiring a signal from an intermediate point on a series impedance source terminated unidirectional transmission line
09/23/2003CA2063637C Galvanic isolation device for continuous electrical signals or signals which may contain a continuous element
09/18/2003WO2003077475A1 Server for standby management in a network
09/18/2003WO2003077443A1 Repeater for power line communication system
09/18/2003WO2003077442A1 Coupling module for a network
09/18/2003WO2003030395A3 Method for managing and operating communication networks through energy supply networks
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