Patents
Patents for H04B 3 - Line transmission systems (31,523)
06/2008
06/18/2008CA2610940A1 Low complexity echo compensation
06/17/2008US7388962 Directional hearing enhancement systems
06/17/2008US7388954 Method and apparatus for tone indication
06/17/2008US7388904 Near-end, far-end and echo cancellers in a multi-channel transceiver system
06/17/2008US7388449 Radiation noise suppression circuit for differential transmission line
06/17/2008US7387529 Integrated connector for powerline network and power supply
06/17/2008CA2350566C Method and apparatus for qualifying loops for data services
06/12/2008WO2008067776A1 Method, device and signal processing system for remote crosstalk cancellation
06/12/2008WO2008067657A1 Method and system for communicating over neutral power lines
06/12/2008WO2007126553A3 Communication system using endpoint devices as routers
06/12/2008US20080139113 Methods and apparatus for rlc re-transmission schemes
06/12/2008US20080137879 Wireless audio system
06/12/2008US20080137719 Serial transmission system, a method for automatically correcting signal quality of serial transmission system, and port
06/12/2008US20080136547 Filtering apparatus for correcting variation of CR-product
06/12/2008US20080136256 Network devices with solid state transformer and electronic load circuit to provide termination of open-drain transmit drivers of a physical layer module
06/11/2008EP1714412B1 Mehtod and apparatus for synchronization over 802.3af
06/11/2008EP1639799A4 Statistical adaptive-filter controller
06/11/2008CN101199135A 电力线通信系统 Power Line Communication Systems
06/11/2008CN101199134A Power line communication system and power line communication method
06/11/2008CN101197797A Cross talk counteracting device, signal processing system and cross talk counteracting method
06/11/2008CN101197594A Method and apparatus for determining micro-reflections in a network
06/11/2008CN101197593A Signal processing device, system and crosstalk counteracting method
06/11/2008CN101197592A Far-end cross talk counteracting method and device, signal transmission device and signal processing system
06/11/2008CN100394697C Receiver including linearity compensation in the receive band
06/10/2008US7386134 Entertainment device
06/10/2008US7386120 Echo canceller having a frequency domain active region location estimator
06/10/2008US7386119 Filtered transmit cancellation in a full-duplex modem data access arrangement (DAA)
06/10/2008US7386042 Jitter measurement
06/10/2008US7386041 Method for normalization of an eye diagram and selection of sampling parameters for a receiver
06/10/2008US7386038 Startup protocol for high throughput communications systems
06/10/2008US7386037 Digital subscriber line communicating system
06/10/2008US7386036 Wireless multi-hop system with macroscopic multiplexing
06/10/2008US7386028 Reduced EMI device and method thereof
06/10/2008US7385932 Wideband frequency domain reflectometry to determine the nature and location of subscriber line faults
06/10/2008US7385466 Differential transmission circuit and common mode choke coil
06/10/2008US7385455 Monolithic integrated circuit with integrated interference suppression device
06/05/2008WO2008067299A2 Method and system for isolating disturbances to the power distribution system
06/05/2008WO2008064607A1 Frequency spectrum management method, frequency spectrum optimizing system, device and client device
06/05/2008WO2008064515A1 A filter suitable for dsl loop line customer service end
06/05/2008US20080130919 Two way device free communications system
06/05/2008US20080130907 Information processing apparatus and program
06/05/2008US20080130763 Asynchronous data transmitting apparatus
06/05/2008US20080130762 Method for Transmitting Data
06/05/2008US20080130731 Noise and channel estimation using low spreading factors
06/05/2008US20080130723 Method for ranging with access point and repeater in wireless communication system
06/05/2008US20080130640 Multi-Wideband Communications over Multiple Mediums
06/05/2008US20080130528 System and method for barging in a half-duplex communication system
06/05/2008US20080129331 System for transmission line termination by signal cancellation
06/05/2008DE60035679T2 Gigabit-ethernt mit zeitverschiebungen zwischen verdrillten leitungspaaren Gigabit ethernt with time shifts between twisted pair cable
06/05/2008DE10232479B4 Vorrichtung für das Hochspannungstesten isolierter Leiter und Schwingkreis zur Verwendung mit dieser Vorrichtung A device for the high-voltage testing of insulated conductors and the resonant circuit for use with this device
06/05/2008CA2613604A1 Multi-carrier transmission process and system in a difficult environment with optimisation of emission power
06/05/2008CA2613489A1 Water leak detection system
06/04/2008EP1928104A1 Communication apparatus for allowing communication systems to be coexistent, and coexistence method
06/04/2008EP1927192A1 Method and test signal for measuring speech intelligibility
06/04/2008EP1201076B1 Network for telephony and data communication
06/04/2008CN201069873Y Test unit for built-in asymmetric digital user line
06/04/2008CN101194435A Vectored DSL nesting
06/04/2008CN101194434A Echo canceler
06/04/2008CN101193309A Video and audio converter and its applied network system
06/04/2008CN101193173A Intelligent charger device
06/04/2008CN101192853A Remote monitoring system and monitoring method for underground communication cable
06/04/2008CN101192852A Ringtone transmission method, system and device
06/04/2008CN101192851A Method, system and application server for preventing from CRBT crosstalk
06/04/2008CN101192850A A dynamic power spectrum management method and spectrum optimization system, and client device
06/04/2008CN101192849A A channel matrix management method and device
06/04/2008CN100393085C Audio signal quality enhancement in a digital network
06/04/2008CN100393019C Diversity reception method and device employing periodic testing
06/03/2008US7383070 Signal processing apparatus
06/03/2008US7382826 Method and apparatus for the control of a decision feedback equalizer
06/03/2008US7382825 Method and apparatus for integrated channel characterization
06/03/2008CA2385125C Method and apparatus for reducing peak to average power ratio in digital broadcasting systems
05/2008
05/29/2008WO2008062622A1 Waveform equalizing device
05/29/2008WO2008062606A1 Intercom device
05/29/2008US20080123868 Wired, wireless, infrared, and powerline audio entertainment systems
05/29/2008US20080123867 Sound Producing Method, Sound Source Circuit, Electronic Circuit Using Same, and Electronic Device
05/29/2008US20080123727 Apparatus and Method of Equalisation
05/29/2008US20080123725 Method and device for determining transmit power spectral density
05/29/2008US20080123302 Circuit module and power line communication apparatus
05/29/2008CA2643159A1 System and method for data transmission over a power line of a switch mode power supply by frequency modulating the switch frequency thereof
05/28/2008EP1926272A1 Dynamic power spectrum management method, spectrum optimization system and client device
05/28/2008EP1926220A1 Method of spatial-frequential selection of coupling coefficients based on a performance constraint in view of a partial pre-compensation/cancellation
05/28/2008EP1925110A2 Method and system for signal emulation
05/28/2008EP1925097A1 Power line communication apparatus
05/28/2008EP1817850A4 Method and apparatus for waking a person
05/28/2008EP1695446A4 Method and apparatus for dynamically inserting gain in an adaptive filter system
05/28/2008CN201066843Y A data transfer system based on metal pipe
05/28/2008CN101189530A Module for testing electromagnetic compatibility of a high-speed Ethernet interface onboard an aircraft
05/28/2008CN101188890A An energy-saving control system for roam lamp
05/28/2008CN100390550C Interpretation system for interpreting reflectometry information
05/27/2008US7380189 Circuit for PLL-based at-speed scan testing
05/27/2008US7379495 Adaptive signal latency control for communications systems signals
05/27/2008US7379493 Signal analyzer for detecting distortions in signals
05/27/2008US7379491 Flop repeater circuit
05/27/2008US7379431 Error correction method and apparatus for TTY on VoIP transmissions
05/27/2008US7378944 Controlling power output of a modem for power line communications
05/27/2008US7378853 System and method for detecting cable faults for high-speed transmission link
05/27/2008CA2611781A1 Leakage location methods
05/22/2008WO2008060527A2 Stability recovery for an on-frequency rf repeater with adaptive echo cancellation
05/22/2008WO2008058493A1 Method and arrangement for controlling adaptive filters
05/22/2008WO2008058492A1 Method and arrangement for the adaptive filtering of signals