Patents
Patents for H04B 3 - Line transmission systems (31,523)
11/2005
11/17/2005WO2005109666A2 System and method for generating a jittered test signal
11/17/2005WO2005109659A2 Configurable dsl transceiver
11/17/2005WO2005109455A1 Pulse transformer for communication
11/17/2005US20050257043 System and method for content protection on a computing device
11/17/2005US20050256944 Method for separating multiple home networks
11/17/2005US20050256651 Algorithm for estimation of multiple faults on a transmission line or waveguide
11/17/2005US20050256385 Signal processing apparatus
11/17/2005US20050254641 Ring voltage generation circuit and method for generating a ring voltage
11/17/2005US20050254640 Sound pickup apparatus and echo cancellation processing method
11/17/2005US20050254629 Measurement noise reduction for signal quality evaluation
11/17/2005US20050254609 System and method for frequency burst detection for GSM/GPRS
11/17/2005US20050254598 Channel state determination method and channel state generator in receiver
11/17/2005US20050254568 Equalizer mode switch
11/17/2005US20050254567 Transmit amplitude independent adaptive equalizer
11/17/2005US20050254566 Transmit amplitude independent adaptive equalizer
11/17/2005US20050254565 Transmit amplitude independent adaptive equalizer
11/17/2005US20050254223 Next high frequency improvement by using frequency dependent effective capacitance
11/17/2005US20050253690 Method and apparatus for attaching power line communications to customer premises
11/17/2005US20050253593 Initialization of a bidirectional, self-timed parallel interface with automatic testing of ac differential wire pairs
11/17/2005DE19825258B4 Ausgangspufferschaltkreis zum Übertragen von digitalen Signalen über eine Übertragungsleitung mit Preemphasis An output buffer circuit for transmitting digital signals over a transmission line with preemphasis
11/17/2005CA2564351A1 System and method for generating a jittered test signal
11/16/2005EP1596634A2 Sound pickup apparatus and echo cancellation processing method
11/16/2005EP1596478A2 Cross-talk improvement for high frequency by frequency dependent effective capacity
11/16/2005EP1596467A1 Electromagnetic field in a communications system for wireless networks
11/16/2005EP1516436A4 Ultra-wideband communication through a wire medium
11/16/2005EP1297668B1 Viterbi equalizer using various hardware data paths for acs and transmission metric operations
11/16/2005EP1232617B1 Method and receiver for whitening a signal disturbance in a communication signal
11/16/2005CN2741278Y Visual intecom device in intelligent housing estate
11/16/2005CN1697500A Channel state determination method and channel state generator in receiver
11/16/2005CN1697340A Segregating unit for dynamic voice
11/16/2005CN1697339A Network equipment of possessing transmission unit in mixed mode
11/16/2005CN1697332A Linear filter equalizer
11/16/2005CN1227830C Noise electric level meter of echo eliminator
11/16/2005CN1227825C PCM modem adaptation system utilizing silence period
11/15/2005US6965657 Method and apparatus for interference cancellation in shared communication mediums
11/15/2005US6965649 Digital subscriber line communicating system
11/15/2005US6965610 System and method for providing compatibility between different transceivers in a multi-pair communication system
11/15/2005US6965578 Echo canceling method and apparatus for digital data communication system
11/15/2005US6965303 Power line communication system and method
11/15/2005US6965302 Power line communication system and method of using the same
11/15/2005US6965275 Method and apparatus for tuning a filter
11/14/2005CA2507318A1 Next high frequency improvement by using frequency dependent effective capacitance
11/10/2005WO2005107093A1 Transceiver and communication method for digital multi-carrier communication
11/10/2005WO2005107092A1 System and method for monitoring cross connections of telecommunication cables
11/10/2005WO2005107063A1 Bypass circuit
11/10/2005WO2005106679A1 System and method for content protection on a computing device
11/10/2005WO2005078950A3 Telephone line extender for high speed modem data transfer
11/10/2005US20050250541 Communication station with automatic cable loss compensation
11/10/2005US20050249347 Non stationary echo canceller
11/10/2005US20050249297 Configuration DSL transceiver
11/10/2005US20050249295 Circuit to observe internal clock and control signals in a receiver with integrated termination and common mode control
11/10/2005US20050249274 Linear filter equalizer
11/10/2005US20050249234 Transceiver and communication method for digital multi carrier communication
11/10/2005US20050248441 Method and apparatus for attaching power line communications to customer premises
11/10/2005DE19947682B4 Nullverzögerungs-Struktur zur Subband-Echokompensation, Echokompensation und Verfahren zur Echokompensation Zero Delay structure for subband echo cancellation, echo cancellation and method for echo cancellation
11/10/2005DE102004019311B3 Verfahren sowie Vorrichtung zur drahtlosen Datenübertragung Method and apparatus for wireless data transmission
11/10/2005DE102004017487A1 Signaling method for sending safety signals, checks occurrence of a safety signal for a direct transmission of a further low-priority safety signal and its interruption per transmission length
11/09/2005EP1594234A1 Coupling circuit for power line communications
11/08/2005US6963643 Method and apparatus for canceling echo in a telephone communication system
11/08/2005US6963642 Band-by-band full duplex communication
11/08/2005US6963616 Adaptively configurable class-A/class-B transmit DAC to transceiver emission and power consumption control
11/08/2005US6963603 Method and apparatus for pre-compensation of an XDSL modem
11/08/2005US6963528 Digital data reproduction apparatus
11/03/2005WO2005104507A1 Wideband frequency domain reflectometry to determine the nature and location of subscriber line faults
11/03/2005WO2005104394A1 A differential equalizer for broadband communications systems
11/03/2005US20050246562 Interchangeable power over Ethernet module
11/03/2005US20050244016 Parametric loudspeaker with electro-acoustical diaphragm transducer
11/03/2005US20050243995 Method and apparatus for canceling acoustic echo in a double-talk period
11/03/2005US20050243994 Echo canceller having a frequency domain active region location estimator
11/03/2005US20050243983 Modems
11/03/2005US20050243908 Decision feedback equalizer
11/03/2005US20050243903 PHY control module for a multi-pair gigabit transceiver
11/03/2005US20050243861 Dual mode power over ethernet controller
11/03/2005US20050243408 Configurable two-wire interface module
11/03/2005US20050242825 Method and apparatus for measuring employing main and remote units
11/03/2005DE102004058233A1 Kabellängen-Erfassungsvorrichrung und Verfahren für einen Tastatur-Video-Maus-Schalter Cable length Erfassungsvorrichrung and method for a keyboard-video-mouse switch
11/02/2005EP1592282A1 Sound collecting method and sound collecting device
11/02/2005EP1590920A2 Multi-channel power line exchange protocol
11/02/2005EP1590895A2 Improved unit for controlling the operation of devices arranged in series in a supply line
11/02/2005EP1590894A1 Echo cancellation device including a double talk detector
11/02/2005CN1692618A System and method for speakerphone operation in a communications device
11/02/2005CN1692035A Feed line structure
11/02/2005CN1691530A Radio access line extending device
11/02/2005CN1225847C Error calibrator for digital broadcast receiver with phase faults compensation
11/01/2005US6961432 Multidescriptive coding technique for multistream communication of signals
11/01/2005US6961423 Method and apparatus for performing adaptive filtering
11/01/2005US6961422 Gain control method for acoustic echo cancellation and suppression
11/01/2005US6961421 Echo analysis for identification of hybrid induced echo in a communication link
11/01/2005US6961390 Systems and methods for non-casual channel equalization in an asymmetrical noise environment
11/01/2005US6961373 Method and apparatus for channel equalization
11/01/2005US6961370 Sweep method using digital signals
11/01/2005US6961317 Identifying and synchronizing permuted channels in a parallel channel bit error rate tester
11/01/2005US6960989 Detectable warning system
10/2005
10/27/2005WO2005101919A1 Mains wire antenna for wireless interface applications
10/27/2005WO2005101779A1 Communication apparatus and communication method for a digital wavelet multicarrier transmission system
10/27/2005WO2005101775A2 Coaxial cable communications systems and apparatus employing single and multiple sinewave modulation and demodulation techniques
10/27/2005WO2005101771A2 Common mode detecting apparatus
10/27/2005WO2005101733A1 Dual mode power over ethernet controller
10/27/2005WO2005101732A1 Interchangeable power over ethernet module
10/27/2005WO2005101684A1 Balanced transmitting apparatus