Patents
Patents for H04B 3 - Line transmission systems (31,523)
04/2007
04/25/2007EP1516434A4 Ultra-wideband communication through a wire network
04/25/2007CN1954586A High speed multiple loop DSL system
04/25/2007CN1954526A Mehtod and apparatus for synchronization over 802.3AF
04/25/2007CN1312861C Method of effective balancing in electric information system including mobile reveiving transmitting machine
04/25/2007CN1312850C Method and devices for controlling loads connected to power line
04/24/2007US7210162 DVB-ASI signal inverting adapter and system
04/24/2007US7209566 Method and apparatus for determining a nonlinear response function for a loudspeaker
04/24/2007US7209517 Method and apparatus for estimating a maximum rate of data and for estimating power required for transmission of data at a rate of data in a communication system
04/24/2007CA2307653C Echo canceller employing dual-h architecture having improved double-talk detection
04/24/2007CA2211347C An encoding method and apparatus using a control circuit switching between two backward adaptive encoders for transmission
04/19/2007WO2007043705A1 Method and apparatus for power line communication
04/19/2007WO2007043595A1 Power supply apparatus and power line communication apparatus thereof
04/19/2007WO2007043162A1 Power line communication system and its relay device
04/19/2007WO2007043124A1 Oversampling transversal equalizer
04/19/2007WO2007017073A3 Facility management system or danger warning system
04/19/2007WO2006107911A3 Method and apparatus for reference symbol aided channel estimation
04/19/2007WO2006086743A3 In-band parametric sound generation system
04/19/2007US20070086600 Dual ear voice communication device
04/19/2007US20070085667 Motor vehicle signalling system incorporating a haptic accelerator pedal
04/19/2007DE102005048225A1 Signal transmission line performance parameters determining method, involves detecting reflected signal impulse portions at closed end, and determining performance parameter of line based on reflected signal impulse portion
04/18/2007EP1775851A1 Crosstalk compensation circuit, unit and method
04/18/2007EP1774672A1 Power line transmission apparatus and communication system using the same
04/18/2007EP1774517A1 Audio signal dereverberation
04/18/2007EP1025653B1 Method for measurement and reduction of frequency offsets in distributwed satellite/wireless networks and corresponding communications system
04/18/2007CN2891485Y Power carrier communication device
04/18/2007CN2891484Y Mixed communication branch splitter
04/18/2007CN2891132Y Controller LAN bus data acquisition unit
04/18/2007CN1949675A Method for implementing coverage in mobile communication signal chamber by CATV coaxial cable
04/17/2007US7206417 Wireless digital transmission system for loudspeakers
04/17/2007US7206358 Error recovery apparatus of digital broadcasting receiver to compensate a phase-error generated by a broadcasting signal transmitted through a multi-path channel
04/17/2007US7206339 Wonder generator, digital line tester comprising the same, and phase noise transfer characteristic analyzer
04/17/2007US7206320 Method and apparatus for non-centralized network bandwidth management
04/17/2007US7206254 Underwater cable arrangements and devices
04/17/2007US7206213 Semiconductor memory device having repeaters located at the global input/output line
04/17/2007US7206152 Adaptive equalizing circuit and regenerative device using it, and adaptive equalizing method
04/17/2007US7205860 Electromagnetic interface module for balanced data communication
04/12/2007WO2007040772A1 Integrated motor monitoring system
04/12/2007WO2007040216A1 Signal receiving apparatus including equalizer, terminal apparatus, signal receiving method, and signal receiving program
04/12/2007WO2007040203A1 Communication device for enabling communication systems to coexist, and coexisting method
04/12/2007WO2007039723A1 Multi-wideband communications over power lines
04/12/2007WO2007038901A1 System, apparatus and method for testing line
04/12/2007WO2007024879A3 Headset with flashing light emitting diodes
04/12/2007WO2006125733A3 Extraction of can-bus-signals without feedback
04/12/2007US20070081599 Method and apparatus for measuring reflected voltage of transformer
04/12/2007US20070081551 Communication apparatus, communication system and communication method
04/12/2007US20070080791 Tactile device
04/12/2007US20070080755 Method and apparatus for implementing common mode cable noise suppression for medium range frequencies
04/12/2007US20070080587 Galvanic isolation of a signal using capacitive coupling embeded within a circuit board
04/12/2007DE10321936B4 Optisches Kommunikationssystem, Signalweiterleitungseinrichtung und optischer Kommunikationsverbinder An optical communication system, signal transmission device and optical communication connector
04/11/2007EP1772341A2 Communication system for data transmission at a railway installation
04/11/2007EP1771952A1 Circuit arrangement for suppressing interfering signals in transmitted signals emitted by a modem of a household appliance
04/11/2007EP1606946B1 Method and modem for data communication in cable television networks
04/11/2007CN2888753Y A wired closed circuit multi-channel telephone with loudspeaker for indoor crane
04/11/2007CN1947366A Method and circuit used to prevent or at least to reduce disturbance signals when switching off voltage supply, in particular in a household device
04/11/2007CN1947353A Communication method utilizing power line
04/11/2007CN1947352A Methods and systems for compensating for alien crosstalk between connectors
04/11/2007CN1945992A Electric line communication signal overlapping mode
04/10/2007US7203488 Flexible software radio transceiver
04/10/2007US7203308 Echo canceller ensuring further reduction in residual echo
04/10/2007US7203243 Line driver with reduced power consumption
04/10/2007US7203230 Method and system for training adaptive channel equalization
04/10/2007US7203225 Method of phase controlling of a data signal, counter clock circuit arrangement, and interface device
04/10/2007US7203224 Isolation system with digital communication across a capacitive barrier
04/10/2007US7203178 Multiuser interference cancellation apparatus
04/10/2007US7203157 Equalization method and device of the GMMSE type
04/05/2007WO2007036428A1 Aircraft local multimedia network
04/05/2007WO2007036165A1 Method and apparatus for crosstalk reduction on digital subscriber lines
04/05/2007WO2007036134A1 Transmitting device, receiving device and method based on multiple sub-bands filters set
04/05/2007WO2007010452A3 Emulation and debug interfaces for testing an integrated circuit with an asynchronous microcontroller
04/05/2007WO2007010452A2 Emulation and debug interfaces for testing an integrated circuit with an asynchronous microcontroller
04/05/2007WO2006060679A3 Method and apparatus for waking a person
04/05/2007US20070076676 Power line communication adaptor and power line communication system
04/05/2007US20070075818 Inductive coupler
04/05/2007DE102006041454A1 Cross-talk identifying method for use in modern Internet protocol based digital subscriber line system, involves evaluating transfer function of crosstalk based on time delay and iteratively repeating with computing power
04/05/2007DE102005047756A1 Rail system for e.g. electrical rail vehicle, has communication devices providing high frequency signal to conductors, where data are exchanged using signal, and high-frequency bridges electrically bridging switch based on signal
04/04/2007EP1770871A1 Device for the capacitive coupling of a data-transmission device to a phase of an electrical power line
04/04/2007EP1770870A1 Powerline communication device and method
04/04/2007EP1770651A1 Computerised system for ordering taxi services and for monitoring the operation of a taxicab
04/04/2007EP1769587A1 Method and apparatus for installing power line communication network
04/04/2007EP1769192A2 Two-wire power and communications for irrigation systems
04/04/2007EP1614243A4 System and method for preventing phantom data communication links
04/04/2007CN1943282A Mains wire antenna for wireless interface applications
04/04/2007CN1943163A Dual mode power over Ethernet controller
04/04/2007CN1943130A Communication channel capacity estimation
04/04/2007CN1941650A Signal separation and separating system and separator board
04/04/2007CN1941649A Method and system for setting communication equipment
04/04/2007CN1309254C Repetitive-PN1023-sequence echo-cancellation reference signal for single-carrier digital television broadcast systems
04/04/2007CN1309180C Method for multiple access and transmission in point-to-multipoint system on electrical network
04/03/2007US7200223 Electronic circuit to reduce noise in digital subscriber loop and communications over unshielded twisted pair metallic conductors
04/03/2007US7200222 Echo canceller employing dual-H architecture having variable adaptive gain settings
04/03/2007US7200221 Methods and systems for providing multi-path echo cancellation
04/03/2007US7200176 Transformerless ethernet controller
04/03/2007US7200171 System and method for estimating initial channel quality in a multirate system
04/03/2007US7200170 High speed I-O loopback testing with low speed DC test capability
04/03/2007US7200093 Method and related apparatus for decoding information carried by wobble signals
04/03/2007US7200078 Method and related optical disk accessing apparatus for calibrating optical disk tilt servo system according to non-constant relation between locations and tilt angles of optical disk
04/03/2007US7199701 Repeater unit
04/03/2007US7199700 Breathminder
04/03/2007US7198521 Power line phase coupler system
04/03/2007CA2304678C Coupling communications signals to a power line