Patents
Patents for H04B 3 - Line transmission systems (31,523)
09/2008
09/10/2008EP1913708A4 Determination of audio device quality
09/10/2008CN201114896Y Intelligent light system
09/10/2008CN201114599Y Middle-frequency network cable remote system
09/10/2008CN201114085Y Metal pipeline data-transmission coupler
09/10/2008CN201114024Y Three phase carrier signal coupler
09/10/2008CN201114023Y Modem
09/10/2008CN201114022Y Electric power repeaters
09/10/2008CN201114021Y Display apparatus binding electric power line communication transmission
09/10/2008CN201114020Y Frequency converter drive electrical signal remote transmission system based on twisted-pair line
09/10/2008CN201113557Y Coupling bridging device for mixing line carrier signal spanning í«line switch í»
09/10/2008CN201113556Y Coupling bridging device for mixing line carrier signal spanning í«line switch í»
09/10/2008CN201113555Y Mixing line carrier network communication carrier signal coupling device
09/10/2008CN201113554Y Mixing line carrier network communication carrier signal coupling device
09/10/2008CN201113553Y Mixing line carrier network communication carrier signal coupling device
09/10/2008CN101263663A Power supply and communication system for a passenger plane
09/10/2008CN101262714A Acoustic signal processing system
09/10/2008CN101262530A A device for eliminating echo of mobile terminal
09/10/2008CN101262253A Method for solving cross-interference issue in digital user line and cross-interference elimination device
09/10/2008CN101262252A Tuning station for eliminating echo and method for eliminating echo based this station
09/10/2008CN101262251A Passive echo elimination device and its signal receiving/transmission method
09/09/2008US7424618 Biometric access control and time and attendance network including configurable system-on-chip (CSOC) processors with embedded programmable logic
09/09/2008US7424315 Communication bus system operable in a sleep mode and a normal mode
09/09/2008US7424118 Moving object equipped with ultra-directional speaker
09/09/2008US7424097 Method of measuring and improving xDSL transmission characteristic
09/09/2008US7424060 Transformer data coupler with high common mode immunity
09/09/2008US7424059 Data transfer circuit
09/09/2008US7424031 Local area network of serial intelligent cells
09/09/2008US7423984 Digital subscriber line transmission method, apparatus and system
09/09/2008US7423983 Voice and data exchange over a packet based network
09/09/2008US7423959 Process for synchronization in the downstream of multiple users in a point multipoint system with OFDM modulation
09/09/2008CA2413436C Echo canceling method and apparatus for multiplex line
09/07/2008CA2622648A1 Light switch used as a communicaton device
09/04/2008WO2008105660A1 Signal quality determination in cable networks
09/04/2008WO2008105214A1 Transmission method, transmission system, transmission device, and reception device
09/04/2008WO2008105196A1 Communication system, communication device, communication terminal, and communication setting method
09/04/2008WO2008105070A1 Adaptive equalization circuit
09/04/2008WO2008104686A2 Test installation with a test bench and method for using such a test bench in said installation
09/04/2008WO2008104684A2 Testing installation for the performance of a domestic electric supply network
09/04/2008WO2008046714A3 Vectored digital subscriber line system having modular vectoring arrangements
09/04/2008US20080215762 Method and system for virtual powerline local area networks
09/04/2008US20080215655 Multi-carrier transmission process and system in a difficult environment with optimisation of emission power
09/04/2008US20080214118 Line Sensor Selection For Quantifying Alien Crosstalk in a Shared Communications Medium
09/04/2008US20080212723 Signal processing apparatus, signal processing method, and program
09/04/2008US20080212717 Carrier frequency detection for signal acquisition
09/04/2008US20080212691 Signalling Method and Apparatus
09/04/2008US20080212665 System for monitoring the quality of a communications channel with mirror receivers
09/04/2008US20080212663 Universal intelligent modem
09/04/2008US20080212662 Apparatus for measuring iq imbalance
09/04/2008US20080211663 Power line audio communication system
09/04/2008US20080211307 Two-Wire Power And Communications For Irrigation Systems
09/04/2008DE202008007250U1 In Doppelheizelementen vorgesehene zweifache thermische Sicherungen In double heating elements provided dual thermal fuses
09/04/2008CA2679278A1 Signal quality determination in cable networks
09/03/2008EP1964377A2 High performance adsl line conditioner system and method
09/03/2008EP1964286A1 Arrangement for a radio link
09/03/2008EP1964277A1 Transmitting arrangement for exchanging information data between an electric consumer and an upstream converter
09/03/2008EP1173998B1 Path switching according to transmission requirements
09/03/2008EP1029409B1 Method for joint equalization and detection of multiple user signals
09/03/2008CN100417121C Method and supply line structure for transmitting data between electrical automotive components
09/02/2008US7421028 Transformer isolator for digital power supply
09/02/2008US7420937 Selectively adaptable far-end echo cancellation in a packet voice system
09/02/2008US7420924 Transmission device
09/02/2008US7420459 Powerline networking device
09/02/2008CA2421759C Method and apparatus for fast converging affine projection based echo canceller
09/02/2008CA2390000C System and method for signal validation and leakage detection
08/2008
08/28/2008WO2008102496A1 Power line communication apparatus
08/28/2008WO2008101523A1 Method of transmitting data and modem
08/28/2008US20080205664 Multi-type audio processing system and method
08/28/2008US20080205661 System and method for cancelling echo
08/28/2008US20080205531 Adaptively configurable class-A/class-B transmit DAC for Transceiver emission and power consumption control
08/28/2008US20080205502 Apparatus for measuring iq imbalance
08/28/2008US20080205501 Dsl System Estimation
08/28/2008US20080205500 Radiofrequency test system integrated in a base station
08/28/2008US20080205451 Transmission scheme for uplink access in a fdma system
08/28/2008US20080204417 Multimodal Adaptive User Interface for a Portable Electronic Device
08/28/2008US20080204134 Power combiner
08/27/2008EP1962438A1 Method of transmitting data and modem
08/27/2008EP1962437A1 Method and apparatus for crosstalk reduction on digital subscriber lines
08/27/2008EP1962436A1 Electricity echo elimination device and method
08/27/2008EP1962435A1 Impulse generator utilizing nonlinear transmission line
08/27/2008EP1962431A1 Digital communication system, indoor device, and outdoor device
08/27/2008EP1961130A1 Method of correcting the para-crosstalk of an sdsl link
08/27/2008EP1961129A2 Clock-free activation circuit
08/27/2008EP1504543A4 Data access arrangement using a high frequency transformer for electrical isolation
08/27/2008CN101253698A PC adaptor apparatus, PC signal reproducing system, pc signal reproducing method, pc signal reproducing program, output apparatus control program, pc adaptor apparatus control program, pc control prog
08/27/2008CN101253679A System and method for electric motor control
08/27/2008CN101252594A Intelligent household electrical appliance control system
08/27/2008CN101252375A Apparatus and method for customizing information based on electric power line
08/27/2008CN101252374A Communication system of elevator calling
08/27/2008CN101252373A Local terminal equipment, signal separator and communicating system
08/27/2008CN101251951A Power distribution network industrial frequency communicating method and system
08/27/2008CN100414522C Method for transport and receive data singal and sand and receive circuit thereof
08/26/2008US7418038 Data receiving device
08/26/2008US7418034 Combined trellis decoder and decision feedback equalizer
08/26/2008US7418033 Selectively filtering a signal
08/26/2008US7418031 Automatic baud rate determination
08/26/2008US7417530 Sleep safety alarm
08/26/2008CA2414972C Gain control method for acoustic echo cancellation and suppression
08/26/2008CA2408081C Method and system for power line null detection and automatic frequency and gain control
08/21/2008WO2008099601A1 Power line communication apparatus, registration status confirmation method, and power line communication system
08/21/2008WO2008083395A8 Unknown destination traffic repetition