Patents
Patents for H04B 3 - Line transmission systems (31,523)
05/2005
05/04/2005EP1295404B1 Wireless transceiver with subtractive filter compensating both transmit and receive artifacts
05/04/2005CN2697956Y 2 Mb as based on low-voltage power line high speed data communication system and network adapter thereof
05/04/2005CN1613250A Verificution for proper coupling of power line communication units to power-supply circuit
05/04/2005CN1612477A Adaptive equalizer, decoding device and error detecting device
05/03/2005US6888939 Circuit for joint transmitting voice and data over a telephone line
05/03/2005US6888903 Digital communication receiver and a method for the operation thereof
05/03/2005US6888896 Method and apparatus for reducing flux imbalance signal distortion in a data communications system
05/03/2005US6888789 Transmitting apparatus, receiving apparatus, communication system, transmission method, reception method, and communication method
04/2005
04/30/2005CA2481623A1 Telephone exchange apparatus and network telephone system
04/28/2005WO2005039070A2 Compensating for dynamic nulls in a power line communication system
04/28/2005WO2005039069A1 Facilities equipment communication circuit
04/28/2005WO2005002183A3 Statistical adaptive-filter controller
04/28/2005WO2005002065A3 Ultra-wideband communication through local power lines
04/28/2005US20050089197 Authentication system and program
04/28/2005US20050089148 Systems and methods for echo cancellation with arbitrary playback sampling rates
04/28/2005US20050089114 Dynamic allocation of frequency spectrum
04/28/2005US20050089106 Data transmission system and method
04/28/2005US20050089101 Sub-block domain transformation multiple signal processing
04/28/2005US20050089061 Joint powerline/ultra-wide band system
04/28/2005US20050089029 Method for operating a transmission system and transmission system in an energy supply network
04/28/2005US20050088962 Digital filter circuit and method for blocking a transmission line reflection signal
04/28/2005US20050088961 Method and apparatus for domain transformation multiple signal processing
04/28/2005US20050088960 Apparatus and method for transmitting/receiving pilot pattern set to distinguish base station in orthogonal frequency division multiplexing (OFDM) communication system
04/28/2005US20050088958 Crosstalk reduction in a backplane employing low-skew clock distribution
04/28/2005US20050088200 Signal transmitting device suited to fast signal transmission
04/27/2005EP1526741A1 Method and Apparatus for temporally recursive chrominance signal noise reduction
04/27/2005EP1526740A1 Method and apparatus for temporally recursive chrominance signal noise reduction
04/27/2005EP1526510A1 Systems and methods for echo cancellation with arbitrary playback sampling rates
04/27/2005EP1428323A4 Power line communication circuit
04/27/2005EP1350334A4 Network quality of service localizer
04/27/2005EP1234353B1 Electromagnetic field in a communications system for wireless networks
04/27/2005EP1232634A4 Non-contact signal analyzer
04/27/2005EP1232568A4 Highly reliable power line communications system
04/27/2005EP1157457A4 A closed loop calibration for an amplitude reconstruction amplifier
04/27/2005CN2696214Y Power line network card
04/27/2005CN1610416A Method and apparatus for temporally recursive chrominance signal noise reduction
04/27/2005CN1199494C Method for establishment of mobile radio network base station and connection of the base station to the network
04/27/2005CN1199412C Method for channel equalisation
04/26/2005US6885954 Sequence time domain reflectometry using complementary golay codes
04/26/2005US6885949 System and method for measuring system parameters and process variables using multiple sensors which are isolated by an intrinsically safe barrier
04/26/2005US6885750 Asymmetric multichannel filter
04/26/2005US6885746 Crosstalk identification for spectrum management in broadband telecommunications systems
04/26/2005US6885674 Communications system for providing broadband communications using a medium voltage cable of a power system
04/26/2005US6885499 Optical amplifying apparatus for amplifying wide-wavelength-band light, optical sending apparatus, optical transmission system, and optical amplifying method
04/21/2005WO2005036919A2 Optimizing performance of a digital subscriber line
04/21/2005WO2005036761A2 System, method and apparatus for crosstalk cancellation
04/21/2005WO2005036374A1 Lan (local area network) with integrated energy and information transmission over the same line
04/21/2005US20050086546 Powered device interface circuit
04/21/2005US20050085259 Technique to coordinate wireless network over a power line or other wired back channel
04/21/2005US20050085211 Compensating for dynamic nulls in a power line communication system
04/21/2005US20050085135 External seizure mechanism for RF node connector
04/21/2005US20050084122 Method for constructing a parametric transducer having an emitter film
04/21/2005US20050084026 Pair-swap independent trellis decoder for a multi-pair gigabit transceiver
04/21/2005US20050084020 Data receiving device
04/21/2005US20050084002 Startup protocol for high throughput communications systems
04/21/2005US20050083860 Determining distance to echo points on a wire-line medium
04/21/2005US20050083439 Method and apparatus for temporally recursive chrominance signal noise reduction
04/21/2005US20050083067 Coded multi-frequency transmitter and receiver for testing multi-conductor cables
04/20/2005EP1524794A1 Transceiver training in a Digital Subscriber Line communicating system
04/20/2005EP1524586A1 Transmitting information to a user's body
04/20/2005EP1523846A1 Echo canceller with model mismatch compensation
04/20/2005EP1523828A1 Method for separating multiple home networks
04/20/2005EP1070393A4 Distribution system for external communication signals and data
04/20/2005CN1608351A Device and method for carrying out multichannel acoustic echo cancellation with a variable number of channels
04/20/2005CN1607741A Mobile phone signal covering system for use in elevator cabins
04/20/2005CN1198441C Network for telephony and data communication
04/20/2005CN1198420C Optical amplification device, optical emitting device, optical transferring system and optical amplification method
04/19/2005US6882711 Packet based network exchange with rate synchronization
04/19/2005US6882618 Transmitting apparatus, receiving apparatus, communication system, transmission method, reception method, and communication method
04/14/2005WO2005008559A3 Rf id tag
04/14/2005US20050078803 Multicarrier communication method and system, and communication apparatus incorporated therein
04/14/2005US20050078758 Method for training a transceiver for high speed communications
04/14/2005US20050078745 System and method for auto baud rate detection in asynchronous serial communication
04/14/2005CA2540572A1 Code tree fragmentation in call admission control
04/13/2005EP1523098A1 Receiver including linearity compensation in the receive band
04/13/2005EP1522152A1 System for carrying out the line transmission of data over an electric network
04/13/2005EP0857400B1 Variable length burst transmission over the physical layer of a multilayer transmission format
04/13/2005CN2692917Y Multiple circuit safety digital mixer system
04/13/2005CN1606833A Coupling circuit arrangement for data communication over power lines
04/13/2005CN1606285A Intelligent network controller for household electrical appliance
04/13/2005CN1606255A Charger and modem for mobile communication terminal
04/13/2005CN1197263C Methods and apparatus for providing echo suppression using frequency domain nonlinear processing
04/13/2005CN1197238C Automatic gain controller and method and communication equipment with said control function
04/12/2005US6877557 In-well monitoring and flow control system
04/07/2005WO2005032160A2 Interference cancellation receiver for high-speed communication systems
04/07/2005US20050076148 Method and system for virtual powerline local area networks
04/07/2005US20050074055 System, method and apparatus for crosstalk cancellation
04/07/2005US20050073965 Auto-negotiation monitor system, repeating-transmission apparatus, and auto-negotiation monitor method used therefor
04/07/2005CA2538969A1 Method and apparatus for electrically adjusting delay in radio-frequency systems
04/06/2005EP1521381A1 Medium-voltage isolated capacitive coupling system
04/06/2005EP1521380A1 Apparatus and method for reducing cross-talk between transmitted signals
04/06/2005EP1476951A4 Crosstalk mitigation in a modem pool environment
04/06/2005EP1219097B1 Improved method for determining subscriber loop make-up
04/06/2005EP1194678B1 Data transmission in pipeline systems
04/06/2005CN2691170Y Two-way multimedia signal transmission device
04/06/2005CN1605186A Echo canceller having spectral echo tail estimator
04/06/2005CN1604542A Auto-negotiation monitor system, repeating-transmission apparatus, and auto-negotiation monitor method used therefor
04/06/2005CN1604518A A method for transmitting wireless data wideband signal via cable television network
04/06/2005CN1604493A Electronic device with serial ata interface and signal amplitude automatic adjustment method
04/06/2005CN1196253C Self-adaption gain and/or phase regulation control system and method thereof