Patents
Patents for H04B 3 - Line transmission systems (31,523)
11/2007
11/27/2007US7301996 Skew cancellation for source synchronous clock and data signals
11/27/2007US7301994 Modulation apparatus for reducing time delay of on-channel repeater in terrestrial digital TV broadcasting system
11/27/2007US7301440 Power line communication system and method
11/27/2007CA2458869C Two wire output/power mechanism for remote devices
11/22/2007WO2006127994A3 Pll with phase clipping and resynchronization
11/22/2007WO2006099298A3 Power supply for underground and pad mounted power distribution systems
11/22/2007US20070268963 Parametric Measurement of High-Speed I/O Systems
11/22/2007US20070268116 Position based tactile reporting
11/21/2007EP1858179A1 Illumination light communication device
11/21/2007EP1858174A1 Diversity receiver using common mode and differential mode
11/21/2007EP1857909A2 Pedal assembly and method
11/21/2007EP1171963B1 Use of the low-voltage network in a building for the transmission and broadcasting of high-frequency mobile telephone signals
11/21/2007CN101076955A Calculating filter coefficient for equalizer of communication receiver
11/21/2007CN101076927A Outlet add-on module
11/21/2007CN101075827A Digital information transmitting system based on power circuit
11/21/2007CN101075826A Method and system for calibrating electric equipment
11/21/2007CN101075825A Hybrid-access wide band network of CATV power line
11/21/2007CN100350404C Configuration system for network appliances, and a method for reconfiguration of appliances
11/20/2007US7299503 Apparatus and method for location specific authentication using powerline networking
11/20/2007US7299005 Radio frequency repeater with automated block/channel selection
11/20/2007US7298853 Parametric virtual speaker and surround-sound system
11/20/2007US7298838 Adaptive cancellation network system and method for digital subscriber line
11/20/2007US7298711 Echo cancellation in a communication device
11/20/2007US7298396 Apparatus and method for monitoring transmission systems using embedded test signals
11/15/2007WO2007129360A1 Coupling device
11/15/2007US20070263712 System and method of calculating noise variance
11/15/2007US20070263667 System and method for I/Q imbalance compensation
11/15/2007US20070263666 Radio Transmitting Apparatus, Radio Receiving Apparatus, Radio Transmitting Method and Radio Receiving Method
11/15/2007US20070263652 Local area network of serial intelligent cells
11/14/2007EP1855398A1 Illumination light communication device
11/14/2007EP1854192A2 Wall mounted housing for insertable computing apparatus
11/14/2007EP1853816A1 Device for ignition control
11/14/2007EP1588571A4 Method and apparatus for evaluating and optimizing a signaling system
11/14/2007EP0843934B1 Arrangement for suppressing an interfering component of an input signal
11/14/2007CN101073042A Arrangement of inductive couplers for data communication
11/14/2007CN101072267A Audio communication system
11/14/2007CN101072255A User telephone line fault testing method
11/14/2007CN101072058A Apparatus for increasing receiver immunity to interference and receiver circuit
11/14/2007CN101072050A System for data transmission via metal pipeline
11/14/2007CN101072049A Metal pipeline data transmission coupler and its processing method
11/14/2007CN101072048A Information parameter adjusting method and device
11/14/2007CN101072047A DSLAN port fast detecting device and its detecting method
11/14/2007CN100349386C Echo eliminator and use method thereof
11/13/2007US7295808 Method of and system for calibrating a repeater
11/13/2007US7295620 Digital subscriber line communicating system
11/13/2007US7295618 Automatic adaptive equalization method and system for high-speed serial transmission link
11/13/2007US7295605 Adaptive equalizer with DC offset compensation
11/13/2007US7295604 Method for determining jitter of a signal in a serial link and high speed serial link
11/13/2007US7295083 Structure for electromagnetically shielding a substrate
11/13/2007US7295034 Signal transmitting device suited to fast signal transmission
11/13/2007US7295032 High-speed signal transmission system
11/13/2007US7295018 Correction of loss and dispersion in cable fault measurements
11/13/2007US7294968 Signal transmisson system and vehicular lamp
11/13/2007CA2239675C Suppression of rfi and impulse noise in communications channels
11/08/2007WO2007126662A2 Pluggable radio navigation satellite system street light controller
11/08/2007WO2007125573A1 Access network system, and gateway device and relay device used for the same
11/08/2007WO2007124640A1 METHOD AND APPARATUS FOR AVOIDING FALSE INITIATING OF xDSL TRANSCEIVER
11/08/2007WO2006034323A9 Communication and ac power system
11/08/2007US20070258581 Methods and systems for compensating for alien crosstalk between connectors
11/08/2007US20070258579 Multi-channel echo cancel method, multi-channel sound transfer method, stereo echo canceller, stereo sound transfer apparatus and transfer function calculation apparatus
11/08/2007US20070258578 Multi-channel echo cancel method, multi-channel sound transfer method, stereo echo canceller, stereo sound transfer apparatus and transfer function calculation apparatus
11/08/2007US20070258357 Method of transmitting ofdm signal and transmitter and receiver thereof
11/08/2007DE102006020030A1 Datenerfassungs- und Steuerungssystem mit Datenübertragung über Funkstrecken und elektrische Energieverteilnetze und Verfahren hierzu Data acquisition and control system with data transmission via radio links and electrical power distribution systems and method therefor
11/08/2007DE102006020029A1 Adaptive, kapazitive Koppelschaltung und Verfahren zur Nachrichtenübertragung über geschirmte Energiekabel eines elektrischen Energieverteilnetzes Adaptive, capacitive coupling circuit and method for transmitting messages via shielded power cable an electrical power distribution
11/07/2007EP1851872A1 Method and device for connecting an additional subscriber to a telephone exchange
11/07/2007EP1743246A4 System and method for content protection on a computing device
11/07/2007EP1389835B1 Downlink synchronisation method for a point-to-multipoint system with ofdm modulation
11/07/2007CN200973088Y Self-excitation power carrier transmit-receive circuit
11/07/2007CN200973087Y Wire clip testing and port redundancy protection device
11/07/2007CN200973086Y Quick connection self-locking radio frequency coaxial connector
11/07/2007CN200973085Y Underground safety wide-frequency cocable network transmission system
11/07/2007CN101069363A Method and apparatus for waking a person
11/07/2007CN101068119A Trunk state detecting method, device and testing information terminal equipment thereof
11/07/2007CN101068118A Method and system for measuring cable interference, length and line attenuation
11/07/2007CN101068117A Wire communication method and system
11/06/2007US7293057 Method and apparatus for cancelling inter-symbol interference (ISI) within a communication channel
11/06/2007US7292637 Noise-tolerant signaling schemes supporting simplified timing and data recovery
11/06/2007US7292631 Feed forward equalizer and a method for analog equalization of a data signal
11/06/2007US7292625 Downstream power calibration method on cable modem
11/06/2007US7292623 Parallel interference cancellation receiver for multiuser detection CDMA signals
11/06/2007US7292606 Two-stage symbol alignment method for ADSL transmission in the presence of TCM-ISDN interferers
11/06/2007US7292600 Local area network of serial intellegent cells
11/06/2007US7292564 Method and apparatus for use in real-time, interactive radio communications
11/06/2007US7292502 Systems and methods for producing a sound pressure field
11/01/2007WO2007124103A2 System and method for estimation and compensation of radiated feedback coupling in a high gain repeater
11/01/2007WO2007123730A1 Echo detection and delay estimation
11/01/2007WO2007123727A2 Echo detection and delay estimation
11/01/2007WO2007122695A1 Power-line carrier communication system and communication apparatus
11/01/2007WO2007002827A3 Method and apparatus for synchronization of data in a transformer circuit
11/01/2007WO2006103557A9 Dsl state and line profile control
11/01/2007US20070255436 Audio processing apparatus for automatic gain control
11/01/2007US20070253577 Equalizer bank with interference reduction
11/01/2007US20070253565 Methods and systems for reducing acoustic echoes in communication systems
11/01/2007US20070253494 Digital subscriber line induction neutralizing transformer network
11/01/2007US20070253321 Method of transmitting ofdm signal and transmitter and receiver thereof
11/01/2007US20070252679 Damage-resistant vibrator assemblies and wireless communications devices incorporating same
11/01/2007US20070252658 Inductive Coupling Circuit and Telecommunication Method by Sheated Cables of an Electrical Current Distribution Network
11/01/2007CA2647386A1 Echo detection and delay estimation
11/01/2007CA2647253A1 Echo detection and delay estimation using a pattern recognition approach and cepstral correlation
10/2007
10/31/2007EP1850573A1 Echo reduction method in a broadband audio signal