Patents
Patents for H04B 3 - Line transmission systems (31,523)
08/2008
08/21/2008US20080201125 System and Method For Automatic Selection Of Transmission Line Macromodels
08/21/2008US20080200128 Twisted Pair Communication System, Apparatus and Method Thereof
08/21/2008US20080199021 Method and Apparatus For Providing Ip Datacasting Service in Digital Audio Broadcasting System
08/21/2008US20080199020 Speaker apparatus, speaker driving apparatus and control method thereof
08/21/2008US20080198940 System and method for data transmission between a transmitter and a receiver across a transmission line
08/21/2008US20080198912 Equalizing Filter Circuit
08/21/2008US20080198909 Efficient multiple input multiple output signal processing method and apparatus
08/21/2008US20080198779 Multi-channel communication device and methods for reducing echoes by inserting a training sequence under a spectral mask
08/21/2008US20080198778 Audio communication device and methods for reducing echoes by inserting a training sequence under a spectral mask
08/21/2008DE102007006138A1 Device assembly plug connector for power supply board of electrically operated apparatus, particularly apparatus for handling vending operation, has two contact elements accommodated in housing
08/20/2008EP1958342A1 System
08/20/2008EP1958341A2 Echo detection
08/20/2008EP1958328A1 Signal output circuit, communication apparatus and signal output control method
08/20/2008CN101248589A Path change detector for echo cancellation
08/20/2008CN101248588A Channel equalizer and method thereof and method for updating filter coefficient used for the sames
08/20/2008CN101247143A Digital subscriber's loop test access device and method
08/20/2008CN100412559C Chip testing method and relevant apparatus
08/19/2008US7415541 Method and system for virtual powerline local area networks
08/19/2008US7415117 System and method for beamforming using a microphone array
08/19/2008US7415086 Multi-channel communication system for multiple input, multiple output processing of an encoded signal
08/19/2008US7415073 Communication channel calibration for drift conditions
08/19/2008US7415072 Drive control for an electric drive with a secure electrical separation of power element and control element
08/19/2008US7415064 Transmit amplitude independent adaptive equalizer
08/19/2008US7415063 Method to estimate noise in data
08/19/2008US7414518 Power line communication device and method
08/19/2008US7413471 Integrated connector for powerline network and power supply
08/19/2008CA2348004C Fault conditions affecting high speed data services
08/14/2008WO2008098202A2 Physical-layer testing of high-speed serial links in their mission environments
08/14/2008WO2008097983A1 Temporary high speed data communication using non-traditionall communication media
08/14/2008WO2008096422A1 Information transmitting means and method for preventing electromagnetic wave leakage
08/14/2008WO2006020084A3 Parametric audio system for operation in a saturated air medium
08/14/2008US20080194198 Data transfer circuit, data transfer apparatus, data transfer method, and control program
08/14/2008US20080192952 Multichannel Wireless System
08/14/2008US20080192950 Communication of audio control signals for wireless audio headphones
08/14/2008US20080192946 Method and Device for Removing Echo in an Audio Signal
08/14/2008US20080192945 Audio system and method
08/14/2008US20080192944 Oscillation-Echo Preventing Circuit and Microphone/Speaker Unit
08/14/2008US20080192942 Method and apparatus for conserving battery power
08/14/2008US20080192814 System and Method for Physical-Layer Testing of High-Speed Serial Links in their Mission Environments
08/14/2008US20080192671 Mobile Telecommunication
08/14/2008DE202007017887U1 Verzerrungs- und Rauschunterdrückungssystem für HFC (Hybrid Fiber Coax)-Netzwerke Distortion and noise reduction system for HFC (Hybrid Fiber Coax) networks
08/13/2008EP1956727A1 Plug-and-play network, digital image display apparatus, and image monitoring system
08/13/2008EP1956726A1 Data transmission device for an aircraft
08/13/2008EP1956725A1 Method for estimating crosstalk interferences in a communication network
08/13/2008EP1955454A1 Power line communication system using hybrid-fiber coaxial and communication device used in the system
08/13/2008EP1955445A1 Power line communication system and communication device used in the system
08/13/2008EP1955161A2 Systems and methods for electricity metering
08/13/2008EP1759467B1 Method and device for transmitting information through a power distribution network
08/13/2008EP1391056B1 Fiberoptic coupling
08/13/2008EP1366586B1 Jitter prevention in a digital communication network
08/13/2008EP1181567A4 Detection of bridge tap using frequency domain analysis
08/13/2008EP1180299B1 Apparatus and method for detecting far end speech
08/13/2008CN101243615A Testing procedure for evaluating diffusion and leakage currents in insulators
08/13/2008CN101242283A Local area network of serial intelligent cells
08/13/2008CN100411300C Distortion compensator
08/12/2008US7412208 Transmission system for transmitting RF signals, power and control signals via RF coaxial cables
08/12/2008US7411999 Method for selecting and extracting an eye diagram opening for subsequent processing
08/12/2008US7411480 Information processing apparatus, information processing control system, control method for information processing apparatus, control program for information processing apparatus recording medium on which control program for information processing apparatus is recorded
08/12/2008US7410367 Next high frequency improvement by using frequency dependent effective capacitance
08/12/2008CA2228831C Optical transmission system
08/09/2008CA2633685A1 Non-intrusive signal quality assessment
08/07/2008WO2008094082A1 Arrangement and method relating to digital subscribe lines
08/07/2008WO2008093490A1 Communication path equalization device and method
08/07/2008US20080187056 Hybrid circuit using resistor
08/07/2008US20080187033 Displaying eye-diagram and digital diagnostic data using network analyzers
08/07/2008US20080187032 Systems and methods for efficient channel classification
08/07/2008US20080187031 Mobile terminal and method for measuring channel quality
08/07/2008US20080186152 Haptic experience service method and system
08/07/2008US20080185917 Selective phase coupler
08/06/2008EP1952548A1 Method and apparatus for improving call quality
08/06/2008EP1952206A2 Power line coupling device and method of using the same
08/06/2008EP1303920B1 Method and apparatus for processing a modulated signal using an equalizer and a rake receiver
08/06/2008EP1192788B1 Predicting performance of telephone lines for data services
08/06/2008EP1103138B1 Device for digital processing with frequency filtering and reduced computation complexity
08/06/2008CN101238646A Method for transmitting data between a pump unit and a control device, and an appropriately designed pump system
08/06/2008CN101237255A Method for reducing the uplink intrusion noise of cable data system
08/06/2008CN101236679A Communicating acousto-optic signal
08/06/2008CN101236542A Method and apparatus to reduce EMI emissions over wide port SAS buses
08/06/2008CN100409650C Method and system for classifying network connections
08/06/2008CN100409602C Transmission method with frequency and time spread at transmitter level
08/06/2008CN100409592C Method and apparatus employing wireless in-band signaling for downlink transmission of commands
08/06/2008CN100409591C Method and apparatus for measuring far end interference in order to determine isoelectric level for end interference
08/06/2008CN100409126C Comber controlling system with industrial bus
08/05/2008US7408996 Method and apparatus for synchronization of data in a transformer circuit
08/05/2008US7408995 High speed communication system with a feedback synchronization loop
08/05/2008US7408994 AC coupling system for wide band digital data with dynamic AC load
08/05/2008US7408993 Digital communication extender system and method
08/05/2008US7408891 Echo canceller employing H-register and storage register
08/05/2008US7408753 Surge-protected networking power strip
08/05/2008US7408426 Method and device for transmission without crosstalk
08/05/2008US7408424 Compact RF circuit with high common mode attenuation
08/05/2008CA2362781C Network for telephony and data communication
08/05/2008CA2307651C Echo canceller employing dual-h architecture having improved non-linear echo path detection
08/05/2008CA2300837C Method and apparatus for echo estimation and suppression
08/02/2008CA2576841A1 Selective phase coupler
07/2008
07/31/2008WO2008091556A1 Adaptive echo cancellation for an on-frequency rf repeater using a weighted power spectrum
07/31/2008WO2008091403A1 System and method for calibrating phase and gain mismatches of an array microphone
07/31/2008WO2008070432A3 Method and device for selectively activating a function thereof
07/31/2008US20080181426 Wireless speaker system for use with ceiling fans
07/31/2008US20080181425 Wireless speaker adapter