Patents
Patents for H04B 3 - Line transmission systems (31,523)
03/2007
03/29/2007WO2007035140A1 Method and test signal for measuring speech intelligibility
03/29/2007WO2007034854A1 Communication apparatus for allowing communication systems to be coexistent, and coexistence method
03/29/2007WO2007033579A1 An adaptive power adjustment method and means based on reducing crosstalk among dsl lines
03/29/2007US20070071251 Audio switch
03/29/2007US20070071230 Distributed echo cancelling
03/29/2007US20070070945 Method and apparatus for channel estimation
03/29/2007US20070070944 Pilot structure for multicarrier transmissions
03/29/2007US20070070928 Auxiliary FL MIMO pilot transmission in 1XEV-DO
03/29/2007US20070070925 Scalable system to adaptively transmit and receive including front-end and adaptive antenna signal processors
03/29/2007US20070070924 Method, system and device for reducing co-channel interference
03/29/2007DE20122683U1 Vorrichtung zum Ermöglichen einer Kommunikation eines Datensignals über ein Energieübertragungskabel An apparatus for enabling communication of a data signal via a power transmission cable
03/29/2007DE102005041052B3 Verfahren zur Stabilitätskontrolle einer selbstschwingenden Treiberschaltung und selbstschwingende Treiberschaltung Method for Stability control a self-oscillating driver circuit and self-oscillating driver circuit
03/28/2007EP1768270A1 Data transmission over power supply line
03/28/2007EP1438833B1 Device and method for multichannel acoustic echo cancellation with a variable number of channels
03/28/2007CN1938596A Radiation information management device and communication device
03/28/2007CN1937852A Audio playing system and audio playing control method
03/28/2007CN1937657A Linear echo control method
03/28/2007CN1937483A System and method for aligning data between local and remote sources thereof
03/28/2007CN1937436A Stacking mode for electric-power wire communication signal
03/28/2007CN1937435A Digital signal processing method for power line communication system
03/28/2007CN1937434A Power line network device concurrently with power supply function
03/28/2007CN1937433A Method for confirming crosstalk coupling and crosstalk confirming unit
03/28/2007CN1937432A Sound echo cancellation processing method based on optimized parameter predication
03/28/2007CN1307816C DMT system for reducing far end crosstalk
03/27/2007US7197146 Microphone array signal enhancement
03/27/2007US7197083 Creation of spectral windows through the use of high rate code words
03/27/2007US7197069 Multi-pair gigabit ethernet transceiver having adaptive disabling of circuit elements
03/27/2007US7196998 Method of determining ADIP information through counting identical bits and different bits
03/27/2007US7196432 Device and method for protecting a motor vehicle against theft
03/27/2007CA2373114C Acoustic echo cancellation
03/27/2007CA2162763C Automated trouble-shooting mechanism resident in craftsperson's portable test and communications device
03/22/2007WO2007032548A1 Power line communication apparatus
03/22/2007WO2007032419A1 Communication apparatus and communication method
03/22/2007WO2007032079A1 Hybrid circuit using resistor
03/22/2007WO2007031228A1 Method for calibrating an electronic system incorporating an integrated computing unit
03/22/2007WO2007008832A3 Path change detector for echo cancellation
03/22/2007US20070066219 Recovery system with De-queue logic
03/22/2007US20070066218 Recovery system with repeating communication capabilities
03/22/2007US20070064589 Method for transmitting data by means of a carrier current
03/22/2007US20070064132 Storage device system and signal transmission method for storage device system
03/22/2007DE102005048224B3 Transmitting signal pre-distortion method for extended digital subscriber line modem, involves pre-distorting intermediate signal according to predictor transfer function for generating feedback signal
03/22/2007DE102005044195A1 Stromversorgungs- und Kommunikationssystem für ein Passagierflugzeug Power and communication system for a passenger aircraft
03/22/2007CA2620718A1 Power supply and communication system for a passenger plane
03/21/2007EP1323288A4 Power line communication system
03/21/2007EP1258107B1 Communications module and system
03/21/2007CN2882063Y Power wire access equipment with protection device
03/21/2007CN1934794A Signal repeater system
03/21/2007CN1934763A Method and apparatus for monitoring energy storage devices
03/21/2007CN1933521A Special communicating method for elevator
03/21/2007CN1933432A Method for network analysis and network analyser module
03/21/2007CN1933348A Zero intermediate frequency receiver and receiving method in electric line carrier communication
03/21/2007CN1933347A Method and device for cable length measurement based on reflected phase shifts
03/21/2007CN1932245A Underground working communication and dangerous case positioning system
03/21/2007CN1306719C Self-adaptation balancing apparatus for SDH transmission system circuit attenuation compensation
03/20/2007US7194037 Active replica transformer hybrid
03/20/2007US7194029 Multi-pair gigabit ethernet transceiver having adaptive disabling or circuit elements
03/20/2007US7194028 Multi-Pair Gigabit Ethernet Transceiver having decision feedback equalizer
03/20/2007US7194026 Blind equalization method for a high definition television signal
03/20/2007US7193506 Method and system for maximizing data throughput rate in a power line communications system by modifying payload symbol length
03/15/2007WO2007029870A1 Method, apparatus and integrated circuit for controlling transmission rate
03/15/2007WO2007029319A1 Power line communication apparatus, and communication capability measuring method in power line communication system
03/15/2007WO2007029225A1 Method for detecting parameters of a remote device
03/15/2007WO2006113317A3 Temperature and frequency equalizer
03/15/2007WO2006075767B1 Various data transmission systems and data transmission methods for transporting vehicles
03/15/2007US20070060046 Apparatus for repeating signal using microstrip patch array antenna
03/15/2007US20070058798 Echo canceller
03/15/2007US20070058708 Method and apparatus for automatically correcting receiver oscillator frequency
03/15/2007US20070057578 Noise suppressing circuit
03/15/2007DE19953219B4 Vorrichtung mit einer Differentialstrom-Steuerschaltung Device having a differential current control circuit
03/14/2007EP1762013A1 Communication apparatus and communication method thereof
03/14/2007EP1588506A4 Light fixture wireless access points
03/14/2007CN1930819A Information leakage preventive device and information leakage preventive method
03/14/2007CN1930535A Actuator and method for operating an actuator
03/14/2007CN1305351C Supplemental audio contents system with wireless communication for cinema and related methods
03/14/2007CN1305238C High impedance isolation device in signalling monitoring system
03/13/2007US7191022 Public addressing system
03/13/2007US7190744 Error generation for adaptive equalizer
03/13/2007US7190718 Method and apparatus for determining a receiver sampling phase for use in diagnosing a channel
03/13/2007US7190716 Line powered loop extender with communications, control, and diagnostics
03/13/2007US7190710 Successive interference canceling for CMDA
03/13/2007US7190665 Blind crosstalk cancellation for multicarrier modulation
03/13/2007US7190594 Next high frequency improvement by using frequency dependent effective capacitance
03/13/2007US7190194 Active hybrid transformer circuit having a replica driver
03/13/2007US7190188 Signal transmission system, and signal transmission line
03/08/2007WO2007027956A2 Multi-band line interface circuit with line side cancellation
03/08/2007WO2007027339A1 System and method for electric motor control
03/08/2007WO2007026984A1 Channel equalizer, channel equalization method, and tap coefficient updating method
03/08/2007WO2007026818A1 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 program, power line communication connector, cradle apparatus using the same, and power line communication reproducing system
03/08/2007WO2007026413A1 Power line carrier communication modem
03/08/2007WO2006121545A3 Systems and methods for facsimile echo cancellation
03/08/2007US20070053523 Lanyard for handheld electronic device
03/08/2007US20070053505 Combined sidetone and hybrid balance
03/07/2007EP1760904A1 Method and apparatus for measuring crosstalk
03/07/2007EP1759493A1 Transceiver apparatus and method having ethernet-over-power and power-over-ethernet capability
03/07/2007EP1759467A1 Method and device for transmitting information through a power distribution network
03/07/2007EP0954910B1 Rf communication signal distribution system and method
03/07/2007CN1926744A Devices and methods for detecting the presence of a source of power
03/07/2007CN1925643A Transmission method for intermediate frequency pulled distant subsystem of TD-SCDMA base station
03/07/2007CN1925349A Method and device for rapid diagnosis of digital user wire transceiver interoperability problem
03/07/2007CN1925348A Standing-wave ratio detecting method and device