Patents
Patents for H04B 3 - Line transmission systems (31,523)
05/2008
05/22/2008WO2008013857A3 Feedback impedance control for driving a signal
05/22/2008US20080119142 Spread spectrum isolator
05/22/2008US20080118079 Audio Device Integration System
05/22/2008US20080118075 Multi-Channel Frequency-Domain Adaptive Filter Method and Apparatus
05/22/2008US20080117994 Use of differential pair as single-ended data paths to transport low speed data
05/22/2008US20080117960 Determining frequency components of jitter
05/22/2008US20080117959 False alarm reduction in detection of a synchronization signal
05/22/2008US20080117956 High impedance state for digital subscriber line transceivers on copper pairs
05/22/2008US20080117840 Bridge Circuit to Suppress Echoes in Communication Devices
05/22/2008US20080116194 Controller for an Electric Auxiliary Heater for a Motor Vehicle Air-Conditioning System
05/21/2008EP1922635A2 Encrypting data in a communication network
05/21/2008CN201063659Y 固定电话数字通信收发器 Fixed telephone digital communication transceivers
05/21/2008CN201063648Y Multipath access device of passive EOC terminal equipment
05/21/2008CN201063619Y Power supply and information co-line transmission household appliances
05/21/2008CN201063618Y Power line modem
05/21/2008CN201063617Y Network and phone line distributor
05/21/2008CN101185252A Communication apparatus enabling coexistence of systems
05/21/2008CN100389573C Local area network of serial intelligent cells
05/20/2008US7376389 Wireless communication system and lift system having the same
05/20/2008US7376385 Repeaters sharing a common medium for communications
05/20/2008US7376212 RF isolator with differential input/output
05/20/2008US7376190 Asynchronous data transmitting apparatus
05/20/2008US7376178 Low bias estimation of small signal-to-noise ratio
05/20/2008US7375602 Methods for propagating a non sinusoidal signal without distortion in dispersive lossy media
05/20/2008US7375440 Vehicle electronic key system
05/15/2008WO2008057787A1 Broadcast method and system
05/15/2008WO2008056006A1 Method for reducing common-mode current for power grid communication devices
05/15/2008US20080113617 Stability recovery for an on-frequency rf repeater with adaptive echo cancellation
05/15/2008US20080112568 Echo Canceller and Communication Audio Processing Apparatus
05/15/2008US20080112477 Received signal level compensation apparatus and method for mobile station
05/15/2008US20080112471 High impedance state for digital suvscriver line transceivers on copper pairs
05/15/2008US20080112334 Wireless device discovery in a wireless peer-to-peer network
05/15/2008DE19934270B4 Fahrzeug-Blinkanlage mit einer Schaltungsanordnung zum Unterdrücken von Störsignalen Vehicle lights with a circuit arrangement for suppressing noise
05/15/2008CA2668427A1 Broadcast method and system
05/14/2008EP1921770A1 Pc adaptor apparatus, pc signal reproducing system, pc signal reproducing method, pc signal reproducing program, output apparatus control program, pc adaptor apparatus control program, pc control program, power line communication connector, cradle apparatus using the same, and power line communication reproducing system
05/14/2008EP1770651A4 Computerised system for ordering taxi services and for monitoring the operation of a taxicab
05/14/2008EP1226707B1 Subscriber line test system
05/14/2008CN101180807A Communications method and apparatus
05/14/2008CN101179635A Device, method and system for performing echo control to hand-free telephone
05/14/2008CN101179319A System and method for communicating with multi compartment vehicles
05/14/2008CN101179299A Scheme of improving carrier transmission performance of low-voltage power line
05/14/2008CN101179298A Modem device of supporting power line and digital subscriber line access and implementing method thereof
05/14/2008CN101179297A Data receiving device
05/14/2008CN101179296A Echo canceller and audio processing apparatus
05/14/2008CN101179295A Echo canceller and communication audio processing apparatus
05/14/2008CN101179294A Self-adaptive echo eliminator and echo eliminating method thereof
05/14/2008CN101179206A Low-voltage electric network remote monitoring and service network
05/13/2008US7373114 Signal transmission circuit, signal output circuit and termination method of signal transmission circuit
05/13/2008US7373104 Signal relay apparatus and method for a wireless network
05/13/2008US7373103 Relay terminal, base station, charging server, communication system, charging method, program computer data signal, and storage medium
05/13/2008US7372901 Method and apparatus for modem rate adaptation
05/13/2008US7372374 Measuring device used in process technology, comprising a central power supply unit
05/13/2008US7372292 Signal transmitting device suited to fast signal transmission
05/13/2008US7372280 Method and system for transmitting an information signal over a power cable
05/13/2008US7371966 High speed active flex cable link
05/13/2008CA2453867C Echo cancellation/suppression and double-talk detection in communication paths
05/08/2008WO2008052904A1 Method, arrangement and device for the precompensation of crosstalk in a dsl mimo system
05/08/2008WO2008052668A2 Method and device for bus arbitration, converter and manufacturing installation
05/08/2008WO2008052485A1 Frequency spectrum management method and device
05/08/2008US20080108312 Switchable transceiver for relay station
05/08/2008US20080108303 Radio base station, relay station and radio communication method
05/08/2008US20080107283 Audio/video portable electronic devices providing wireless audio communication and speech and/or voice recognition command operation
05/08/2008US20080107281 Acoustic echo canceller system
05/08/2008US20080107280 Noisy environment communication enhancement system
05/08/2008US20080107279 Sound-processing device with automatic howl cancellation and cancelling howl method thereof
05/08/2008US20080107162 Mapping radio-frequency spectrum in a communication system
05/08/2008US20080107135 Radio Data Transmission Method Employing Several Different Pilot Patterns, Corresponding Base Station, Mobile, System and Reception Method
05/08/2008DE10331710B4 Bandkabel Ribbon cable
05/08/2008DE102007049805A1 Markieren asymmetrischer Kabel zum Zweck einer verbesserten Netzwerktaktsynchronisation Mark unbalanced cables for the purpose of improved network clock synchronization
05/08/2008DE102006051866A1 Verfahren zum Senden eines Datenübertragungsblocks und Verfahren und System zum Übertragen eines Datenübtertragungsblocks A method for sending a data transmission block and a method and system for transmitting a Datenübtertragungsblocks
05/07/2008EP1919093A1 An adaptive power adjustment method and means based on reducing crosstalk among dsl lines
05/07/2008EP1590920B1 Multi-channel power line exchange protocol
05/07/2008CN201057372Y Shaking stick illuminating and displaying calligraphy and painting
05/07/2008CN101176270A System and method for power line communications
05/07/2008CN101176269A Bus modem for building and industrial electrical systems
05/07/2008CN101175226A Method and system for automatic cat cable configuration
05/07/2008CN101174855A Spectrum management method and apparatus
05/07/2008CN100386980C Method and system for processing orthogonal frequency-division multiplex singal
05/07/2008CN100386967C Transceiver with integrated hybrid circuit
05/06/2008US7369838 Intra-premises wireless broadband service using lumped and distributed wireless radiation from cable source input
05/06/2008US7369618 Signal transmission circuit
05/06/2008US7369608 Dynamic regulation of power consumption of a high-speed communication system
05/06/2008US7369606 Phase error detector using I/Q interference cancellation
05/06/2008US7369605 Method and device for injecting a differential current noise signal into a paired wire communication link
05/06/2008US7369604 Time correlation of data acquisition samples from independent systems in a logic analyzer
05/06/2008US7369579 Method and system for timing controlled signal transmission in a point to multipoint power line communications system
05/06/2008US7369516 Adaptive echo canceling
05/06/2008US7369042 Warning device for vehicles
05/06/2008US7368919 Wireless portable automated harness scanner system and method therefor
05/06/2008CA2429581C Device for sending and receiving data through power distribution transformers
05/02/2008WO2005022595A3 A parametric transducer
05/01/2008US20080102750 Broadcast method and system
05/01/2008US20080101623 Device for Receiving Audio Signals Transmitted in a Wireless Manner
05/01/2008US20080101622 Signal Processing Method, Signal Processing Device, and Signal Processing Program
05/01/2008US20080101479 Method and system for automatic cat cable configuration
05/01/2008US20080101448 Methods, systems, and computer program products for automatic detection of an incorrect digital subscriber line modem and filter configuration at a customer premises
05/01/2008US20080100476 Vehicle direction guide vibration system and method
04/2008
04/30/2008EP1915822A2 Managing spectra of modulated signals in a communication network
04/30/2008EP1915661A1 Device for optimising the energy consumption of an electric circuit component
04/30/2008DE202007010024U1 Mediengerät Media device