Patents
Patents for H04B 3 - Line transmission systems (31,523)
11/2001
11/07/2001CN1321358A Acoustic echo and noise cancellation
11/06/2001US6314133 Automatic equalizer capable of surely selecting a suitable sample timing a method for generating sampling clock used for the sample timing and a recording medium usable in control of the automatic equalizer
11/06/2001US6313933 Bidirectional wavelength division multiplex transmission apparatus
11/06/2001US6313594 Partition wall system having a drive mechanism, and drive system for a partition wall system
11/06/2001CA2234738C Method and apparatus for cancelling multi-channel echo
11/06/2001CA2231605C An enhanced echo canceller for digital cellular application
11/05/2001WO2001086900A1 Training of equalisers, for use with signals of differing data rates
11/01/2001WO2001082581A1 Method and system for power line communication with set top boxes
11/01/2001WO2001082523A1 Diversity reception employing periodic testing
11/01/2001WO2001082497A1 Method and apparatus for interfacing rf signals to medium voltage power lines
11/01/2001WO2001082496A2 Long subscriber loops using automatic gain control
11/01/2001WO2001082491A1 Method and system for power line null detection and automatic frequency and gain control
11/01/2001WO2001082488A1 Turbo decoder with decision feedback equalization
11/01/2001WO2001082161A1 Commodity selling system
11/01/2001WO2001081938A1 Method and system for power line impedance detection and automatic impedance matching
11/01/2001US20010036261 Configurable analog front end for communication systems
11/01/2001US20010036237 Approach for processing data received from a communications channel in finite precision arithmetic applications
11/01/2001US20010036228 Approach for processing data received from a communications channel
11/01/2001US20010036227 Communication control circuit
11/01/2001US20010036225 Coefficient update method and receive method of time domain equalizer of DMT system, DMT system and DMT modem
11/01/2001US20010036223 Rake receiver with embedded decision feedback equalizer
11/01/2001US20010036160 Echo and crosstalk cancellation
11/01/2001US20010035769 Semiconductor memory
10/2001
10/31/2001EP1149478A1 Analogue echo filter
10/31/2001EP1149470A1 System and methods for multimode operation of a digital filter with shared resources
10/31/2001EP1005721B1 Method of reducing skew in signal carrying cables, and signal carrying cable utilizing such method
10/31/2001EP0956217B1 Method for data transmission in a vehicle
10/31/2001EP0908018B1 System and method for adaptive interference cancelling
10/31/2001EP0811288B1 Apparatus and method for cancelling acoustic echoes including non-linear distortions in loudspeaker telephones
10/31/2001CN2457603Y Impedance matching box of carrier wave communication
10/30/2001US6310864 Voice echo cancellation for SVD modems
10/30/2001US6310516 Attenuation compensation in amplification for a distribution network
10/30/2001US6310408 System for transmitting data in a motor vehicle
10/30/2001US6310286 Quad cable construction for IEEE 1394 data transmission
10/30/2001CA2204059C Intelligent near-end speech detection
10/25/2001WO2001080441A2 Digital communications utilizing medium voltage power distribution lines
10/25/2001WO2001080440A1 Transmission system and method for power line communication
10/25/2001WO2001080439A1 Desired voice detection in echo suppression
10/25/2001WO2001080435A2 Power line communication network
10/25/2001WO2001080398A1 Method and device for monitoring enablement of an electrical apparatus connected to a power grid
10/25/2001WO2001031866A3 Baseband processor with look-ahead parameter estimation capabilities
10/25/2001WO2001030029A3 Method for the transmission of signals in a bus system, superposed on a direct supply voltage
10/25/2001WO2000046916A9 A closed loop calibration for an amplitude reconstruction amplifier
10/25/2001US20010034216 Determination of transmitter distortion
10/25/2001US20010033650 Device for use in communication systems
10/25/2001US20010033628 Device for use in controlling a sample rate
10/25/2001US20010033615 Automatic equalization circuit and receiver circuit using the same
10/25/2001US20010033583 Voice gateway with downstream voice synchronization
10/25/2001US20010033566 Methods and apparatus for providing telephonic communication services
10/25/2001US20010033174 Cable testing systems
10/25/2001CA2784177A1 Network combining wired and non-wired segments
10/25/2001CA2407288A1 Method and device for monitoring enablement of an electrical apparatus connected to a power grid
10/25/2001CA2406224A1 Digital communications utilizing medium voltage power distribution lines
10/24/2001EP1147621A1 Communication station with automatic cable loss compensation
10/24/2001CN2456377Y Three phase power carrier wave signal transferrer
10/24/2001CN1319281A Arrangement and method for forming overall signal, device and method for forming current signal and first communication signal, communication system and method for transmitting first
10/23/2001US6307905 Switching noise reduction in a multi-clock domain transceiver
10/23/2001US6307901 Turbo decoder with decision feedback equalization
10/23/2001US6307444 Frequency signal equalizing device, specially for a satellite communications facility
10/18/2001WO2001078394A1 Personal videoconferencing system having distributed processing architecture
10/18/2001WO2001078249A1 Method and apparatus employing wireless in-band signaling for downlink transmission of commands
10/18/2001WO2000046923A9 Apparatus and method for implementing digital communications on a power line
10/18/2001US20010031048 Method and system for data communication
10/18/2001US20010031012 Calibration system for a communications system
10/18/2001US20010031000 Method and apparatus for reducing convergence time
10/18/2001US20010030993 Method and apparatus for digital symbol detection using medium response estimates
10/18/2001DE10018241A1 Signal and/or data transmission device using electrical energy transmission line has signal and/or data generation device coupled via transformer to electrical switchgear device
10/18/2001DE10017747A1 Verfahren zur Regelung des Vielfachzugriffs in Netzwerken Method for controlling the multiple access networks
10/18/2001DE10014676A1 Datenübertragung über ein Stromversorgungsnetz Data transfer via a power supply network
10/18/2001CA2344295A1 Long subscriber loops using modified load coils
10/17/2001EP1146694A2 Method of controlling multiple access in networks
10/17/2001EP1146659A1 Communication method and communication device
10/17/2001EP1145515A1 Trellis decoder with correction of pair swaps, for use in gigabit ethernet transceivers
10/17/2001EP1145511A2 Equalizer for multi-pair gigabit ethernet
10/17/2001EP1145475A1 An adaptive digital beamforming receiver to improve signal reception
10/17/2001EP1145024A2 Dynamic register with iddq testing capability
10/17/2001EP0879504B1 Repeater for transmission system for controlling and determining the status of electrical devices from remote locations
10/17/2001CN2454993Y Multi-point double-direction communication device for hospital clinic
10/17/2001CN2454971Y Signal power-supply supplying device for cable TV system on passenger train or ship
10/17/2001CN1318233A Radio communication device and radio communication method
10/16/2001US6304654 Telephone handset interface with feedback control
10/16/2001US6304615 Serial digital data communications receiver with improved automatic cable equalizer, AGC system, and DC restorer
10/16/2001US6304599 Adaptive equalizer and adaptive equalization scheme
10/16/2001US6304598 Apparatus for, and method of, reducing power dissipation in a communications system
10/16/2001US6304594 Interference detection and avoidance technique
10/16/2001US6304043 Circuit arrangement for signal coupling between circuit parts having supply lines isolated from one another
10/16/2001CA2200729C Lan tester
10/16/2001CA2030623C A method and arrangement for avoiding erroneous echo-elimination and/or equalization in a telecommunication system
10/11/2001WO2001076217A1 Communications and control network
10/11/2001WO2001076216A1 Communications and control network
10/11/2001WO2001050695A8 Method for equalizing data received
10/11/2001US20010028678 Method and device for communication
10/11/2001US20010028320 Isolation system with analog communication across an isolation barrier
10/10/2001EP1142356A1 Communication system, communication method and corresponding devices
10/10/2001EP1142291A2 Network data filtering
10/10/2001EP1142277A1 Circuit arrangement for transmitting signals in telecommunications networks
10/10/2001EP1142155A2 Signalling method and telecommunication system
10/10/2001EP1142151A1 A remote feeder reactance coil
10/10/2001EP1142150A1 Echo and distortion cancellation arrangement
10/10/2001EP1142111A1 Low-power programmable digital filter