Patents
Patents for H04B 3 - Line transmission systems (31,523)
01/2005
01/12/2005CN1564092A Lighting network control system and its control method
01/12/2005CN1184745C Device for eleminating echo
01/11/2005US6842668 Remotely accessible power controller for building lighting
01/11/2005US6842519 Communication with current detection
01/11/2005US6842516 Digital adaptive filter and acoustic echo canceller using the same
01/11/2005US6842481 Apparatus and method for secure media independent interface communications by corrupting transmit data on selected repeater port
01/11/2005US6842236 Method and device for continuously monitoring an optical transmission path
01/11/2005US6842012 Modeling and calibrating a three-port time-domain reflectometry system
01/11/2005CA2278930C Bidirectional communication system having symmetrical transmission rates
01/06/2005WO2005002295A2 Circuit and method for suppression of electromagnetic coupling and switching noise in multilayer printed circuits boards
01/06/2005WO2005002183A2 Statistical adaptive-filter controller
01/06/2005WO2005002079A2 A method and system for bidirectional data and power transmission
01/06/2005WO2005002065A2 Ultra-wideband communication through local power lines
01/06/2005WO2004105268A3 Method and apparatus for branching a single wire power distribution system
01/06/2005WO2004092911A3 System and method for preventing phantom data communication links
01/06/2005US20050005150 Apparatus and method for location specific authentication using powerline networking
01/06/2005US20050002449 Signal observation system
01/06/2005US20050002408 Home appliance network system and method for operating the same
01/06/2005US20050002142 Surge-protected networking power strip
01/06/2005US20050001712 RF ID tag
01/06/2005US20050001694 Power line communication system and method of operating the same
01/06/2005US20050001693 Power line communication system and method of operating the same
01/06/2005CA2528102A1 A method and system for bidirectional data and power transmission
01/05/2005EP1464158A4 Verification of proper coupling of power line communication units to power circuits
01/05/2005CN1561010A Echo cancel circuit for billion Ethernet receiver
01/05/2005CN1561009A Data alignment circuit in receiving channel of billion Ethernet receiver
01/05/2005CN1560852A 波形均衡器 Waveform equalizer
01/04/2005US6839872 Media converter and failure detection technique
01/04/2005US6839427 Method and apparatus for echo canceller automatic gain control
01/04/2005US6839426 Echo cancellor
01/04/2005US6838978 Appliance data collecting system
01/04/2005US6838865 Method and apparatus for branching a single wire power distribution system
12/2004
12/30/2004US20040267382 Food preparation system
12/30/2004US20040266346 Passive repeater/terminator
12/30/2004US20040266334 Electromagnetic field communications system for wireless networks
12/30/2004US20040266332 Communication methods and apparatus
12/30/2004US20040264686 Statistical adaptive-filter controller
12/30/2004US20040264581 System and method for communicating calibration data
12/30/2004US20040264562 Decision feedback equalization for high speed serial links
12/30/2004US20040264501 Dynamic power line bandwidth limit
12/30/2004US20040263321 Method and system for bidirectional data and power transmission
12/30/2004US20040263317 Mobile remote burglarproof learning system
12/30/2004US20040263282 Modem coupling circuit for power-line carrier
12/29/2004WO2004114684A2 Method and apparatus for non-centralized network bandwidth management
12/29/2004WO2004114615A1 Apparatus and method for estimating a channel in a multiple input transmission system
12/29/2004WO2004114578A2 Echo cancellation in systems with asymmetric spectrum
12/29/2004WO2004114543A1 Power line communication device, control system, and method for setting a connection wire in power line communication device
12/29/2004WO2004114541A2 Sparse echo canceller
12/29/2004WO2004030431A3 Method and system for signal repeating in powerline communications
12/29/2004EP1492289A2 Decision feedback equalization for high speed serial links
12/29/2004EP1492287A1 Receiver
12/29/2004EP1492247A1 Interference proof input stage of a two wire line
12/29/2004EP1198897A4 Crest factor compensated driver
12/29/2004EP1166544A4 Interference canceling method and apparatus
12/29/2004CN1559128A Crosstalk equalization for input-output driver circuits
12/29/2004CN1559111A Dynamic allocation of frequency spectrum
12/29/2004CN1558565A Power line transmission digital multiple track speaker system
12/29/2004CN1558564A Power line based data communication system and realizing method thereof
12/29/2004CN1558563A Echo eliminator and use method thereof
12/29/2004CN1558562A 2Mbps based low voltage power line high speed data communication system and network adaptor thereof
12/29/2004CN1557664A Bus type intelligent sensor set for state monitoring
12/29/2004CN1182700C Status monitoring and data processing system suitable for use in a bi-directional communication device
12/29/2004CN1182519C Optical disc replaying device
12/28/2004US6836517 Distortion compensating apparatus
12/28/2004US6836508 Method and apparatus for using unintended radio frequency propagation in a network
12/28/2004US6836124 Capacitance monitoring systems
12/28/2004CA2297871C Dmt test method for determining adsl capability of cables
12/23/2004WO2004112274A1 Signal filling/extraction device
12/23/2004WO2004112273A1 Method enabling multiple communication nodes to access a transmission means on an electrical grid
12/23/2004WO2004111666A1 Method and apparatus for testing a medium
12/23/2004WO2004036772A3 Arrangement of a data coupler for power line communications
12/23/2004US20040261121 Distributed gain network
12/23/2004US20040261101 Method and apparatus for non-centralized network bandwidth management
12/23/2004US20040260738 Sparse echo canceller
12/23/2004US20040259603 Charging device for mobile terminals with integrated powerline modem
12/23/2004US20040258185 Device for reproducing received data for radio data communication and a method of adjusting frequency therefor
12/23/2004US20040258172 Method and system for data rate optimization in a digital communication system
12/23/2004US20040258166 Data transceiver and method for equalizing the data eye of a differential input data signal
12/23/2004US20040258165 Transmission system for transmiting data via current conducting branches
12/23/2004US20040258141 Digital communication over 28VDC power line
12/23/2004US20040257731 Local network using an electrical power distribution system and associated reflection device
12/23/2004US20040257207 Insertion of repeaters without timing constraints
12/23/2004US20040257121 Data transfer apparatus for low voltage differential signaling
12/23/2004DE10324373A1 Stromversorgung über die Datenleitungen in lokalen Netzen Power supply via the data lines in local networks
12/23/2004CA2529874A1 Method enabling multiple communication nodes to access a transmission means on an electrical grid
12/22/2004EP1488626A2 Protecting medium voltage inductive coupled device from electrical transients
12/22/2004EP1284064B1 Method and device for controlling the timing of a digital receiver
12/22/2004EP1190541B1 Circuit and method for galvanically isolated broadband transmission
12/22/2004CN1556623A Intelligent community and intelligent domestic automation system based on full electric power line and method
12/22/2004CN1556590A Channel optimization device for power line high speed dada communication system
12/22/2004CN1181659C Two-line interface method for digital terminal and power line simulated carrier
12/22/2004CN1181624C Transmission mode of powder distribution wire and signal sampler in power transmission system
12/22/2004CN1181623C Two-channel 2-4 line user's interface device
12/21/2004US6834109 Method and apparatus for mitigation of disturbers in communication systems
12/21/2004US6834108 Method for improving acoustic noise attenuation in hand-free devices
12/21/2004US6834091 Time synchronization for data over a powerline modem network
12/21/2004CA2234555C An adaptive echo cancellation method
12/16/2004WO2004109948A2 Near-end, far-end and echo cancellers in a multi-channel transceiver system
12/16/2004WO2004109804A1 Method for fabricating semiconductor device
12/16/2004WO2004098088A3 Multiple channel interference cancellation