Patents
Patents for H04B 3 - Line transmission systems (31,523)
04/2014
04/16/2014EP2720381A2 Network isolation system
04/16/2014EP2720380A2 Power line communication (PLC) coupling through an external power supply
04/16/2014CN203554477U Mounting and regulating mechanism for relays
04/16/2014CN203554466U power line information monitoring device
04/16/2014CN203554439U Carrier wave emission circuit for power line carrier communication
04/16/2014CN203554438U A power line carrier communication real-time clock circuit
04/16/2014CN203554437U An electric power transmission micropower distribution system
04/16/2014CN203554436U Conducted interference isolation circuit for low-voltage circuit line carrier communication
04/16/2014CN203553525U Socket assembly with power modem function
04/16/2014CN203552453U Dual-mode communication chip
04/16/2014CN103733569A A control method in a network
04/16/2014CN103733530A 分支器 Splitter
04/16/2014CN103733529A Power line communication modem, power line communication system and power line communication method
04/16/2014CN103731249A Digital communication method and device for improving intelligent power grid communication reliability
04/16/2014CN103731183A Underwater unit circuit of shipborne remote communication system based on alternating-current 500v power line carrier
04/16/2014CN103731182A Method and system for real-time monitoring of power line carrier communication
04/16/2014CN102474307B Impedance stabilization device
04/16/2014CN102201969B Broadband power control method, network management equipment and digital subscriber line network system
04/16/2014CN102006101B Power line carrier communication module
04/15/2014US8700920 System and method for content protection on a computing device
04/15/2014US8699942 Methods and arrangements for determining radio characteristics of a radio link
04/15/2014US8699625 Generalized OFDM (GOFDM) for ultra-high-speed serial optical transport networks
04/15/2014US8699586 Powerline control interface in CENELEC (EU) A-D bands frequency and amplitude modulation transmitter
04/15/2014US8699585 Transmitters for loop-back adaptive pre-emphasis data transmission
04/15/2014US8699555 Adaptive equalizer
04/15/2014US8699552 Mechanism for measuring transmitter impairments using offset local oscillators
04/15/2014US8699547 Multiple-input Multiple-output (MIMO) with relay nodes
04/15/2014US8698579 Multi-phase EMI noise separator
04/15/2014US8698573 Impedance stabilization device
04/15/2014US8698572 Delay line calibration
04/15/2014US8698571 Circuit for improving the immunity performance of a vehicle network
04/15/2014US8698357 Multiple power supply device
04/15/2014CA2673634C Method of determining a channel quality and modem
04/15/2014CA2632522C Acoustic wave generating apparatus and method
04/15/2014CA2599895C Dsl state and line profile control
04/10/2014WO2014055792A1 Real identity authentication
04/10/2014WO2014054043A1 Hybrid precoder
04/10/2014US20140098971 System and Method for Directional Sound Transmission with a Linear Array of Exponentially Spaced Loudspeakers
04/10/2014DE112012003060T5 Stromleitungskommunikationssystem und Transmitter A powerline communication system and transmitter
04/10/2014DE112011105345T5 Ausgleichsvorrichtung und Ausgleichsverfahren Equalizer and equalization method
04/09/2014EP2717517A1 Network for detecting the presence of persons with a plurality of house installation/building system devices
04/09/2014EP2717487A1 Method and apparatus for providing electrical power to a broadband digital subscriber line access
04/09/2014EP2717486A1 A device and method for detecting presence of a surge protection on a digital subscriber line
04/09/2014EP2717485A1 Signal processing method, device and system
04/09/2014EP2717484A1 Method and system for implementing optical label
04/09/2014EP2715949A1 Mobile phone as a one-way recorded transmitter over a cellular network
04/09/2014CN203537384U A direct current power supply outgoing line data transmission apparatus employing a direct modulation mode
04/09/2014CN203535793U Power communication device based on spread spectrum mode
04/09/2014CN203535791U Carrier wave communication unit under intelligent power grid environment
04/09/2014CN103718534A Dynamic medium switch in co-located plc and RF networks
04/09/2014CN103718471A Data transmission device, railway vehicle junction unit and rail vehicle combination
04/09/2014CN103716294A Low voltage power line spread spectrum communication protocol based on random address time scale
04/09/2014CN103716275A Method for eliminating pulse interference in power line orthogonal frequency division multiplexing communication system
04/09/2014CN102308488B Illumination assembly
04/09/2014CN102257770B Communication method and communication device
04/09/2014CN102158256B Exception handling method during coaxial cable communication in spraying room
04/08/2014US8693997 Visual ARS service system and method enabled by mobile terminal's call control function
04/08/2014US8693972 Down-conversion of multiple RF channels
04/08/2014US8693945 System and method for detecting and measuring uplink traffic in signal repeating systems
04/08/2014US8693898 Adaptive equalizer, optical receiver, and tap coefficient correcting method
04/08/2014US8693698 Method and apparatus to reduce non-linear distortion in mobile computing devices
04/08/2014US8693677 Techniques for updating filter coefficients of an adaptive filter
04/08/2014US8693676 Power efficiency of a line driver
04/08/2014US8693646 Packet based network exchange with rate synchronization
04/08/2014US8693555 Communication system
04/08/2014US8693554 Capacitive communication circuit and method therefor
04/08/2014US8693529 Method for enabling a device under test (DUT) to retry a portion of a pre-defined test sequence
04/08/2014US8693527 Relay apparatus and relay method
04/08/2014US8693492 Quality of service half-duplex media access controller
04/08/2014US8693395 Apparatus and method for controlling operation state of physical layer
04/08/2014US8692407 Power line transmission apparatus without public power system noise interference and method thereof
04/03/2014WO2014052660A1 Channel reuse among communication networks sharing a communication channel
04/03/2014WO2014052190A1 System and method for ground fault detection in a transformer isolated communication channel of a network device
04/03/2014WO2014052122A1 Pulse-based binary communication
04/03/2014WO2014052121A1 Transient power communication
04/03/2014WO2014049932A1 Communication system
04/03/2014WO2014048269A1 Communication circuit for automatically performing transceiving control on rs485
04/03/2014US20140093067 Method, apparatus, and system for reducing line-to-line crosstalk during transmission of digital subscriber line service
04/03/2014US20140093057 Outlet add-on module
04/03/2014US20140093001 Communication system, communication device, and method for operating communication system
04/03/2014US20140093000 Method for transmitting a signal from a transmitter to a receiver in a power line communication network, transmitter, receiver, power line communication modem and power line communication system
04/03/2014US20140092949 Method and System for Diagnosing Radio Performance During Functional Over-the-Air Operation
04/03/2014US20140092943 Method for using power lines for wireless communication
04/03/2014US20140091874 Composite Electromagnetic Isolation Filters
04/02/2014CN203522789U Power network switch
04/02/2014CN203522779U Low-voltage DC power line bus communication system
04/02/2014CN203522767U Regulating mechanism of repeater with two-stage regulation
04/02/2014CN203522735U Power line communication network filtering system and power line communication network
04/02/2014CN203522734U Multi-network-port power modem
04/02/2014CN203522325U Generating set remote control system using power line to transmit information
04/02/2014CN103703749A Dynamic improvement of link symmetry in co-located plc and rf networks
04/02/2014CN103703693A Mobile phone as a one-way recorded transmitter over a cellular network
04/02/2014CN103703647A Power line communication device, solar power generation system, power line communication method, and power line communication program
04/02/2014CN103701499A Route displaying method, device and equipment of low-voltage power-line carrier communication system
04/02/2014CN103701498A Power line carrier communication signal processing method and device
04/02/2014CN103701497A Deck unit circuit of AC (Alternating Current) 500v power line carrier shipborne remote communication system
04/02/2014CN103701496A Power line carrier equipment and online upgrading method thereof
04/02/2014CN103701495A Household appliance equipment and household appliance system
04/02/2014CN103701494A Elevator PLC (Programmable Logic Controller) transmission system and method supporting continuous power failure transmission
04/02/2014CN103701493A Realizing method for single-ended power supply of submarine cable transmission system with repeater through monopolar cable
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