| Patents for H04B 3 - Line transmission systems (31,523) |
|---|
| 08/09/2001 | WO2001058032A1 Pcm modem adaptation system utilizing a silence period |
| 08/09/2001 | WO2001057544A1 Capacitance monitoring systems |
| 08/09/2001 | WO2000076081A3 Methods and apparatus for improved sub-band adaptive filtering in echo cancellation systems |
| 08/09/2001 | US20010012333 Method and apparatus for qualifying loops for data services |
| 08/09/2001 | US20010012321 Reducing crosstalk between communications systems |
| 08/09/2001 | US20010012287 Information terminal and information terminal system |
| 08/08/2001 | EP1122921A1 Circuit and method for providing a digital data signal with pre-distortion |
| 08/08/2001 | EP1121789A1 Method and apparatus of providing adaptive equalization using sign permutation filtering |
| 08/08/2001 | EP0760184A4 In-line predistorter for linearization of electronic and optical signals |
| 08/08/2001 | CN2442457Y Powerline carrier communication device |
| 08/08/2001 | CN1307682A Method and device for monitoring an electrode line of a bipolar high voltage direct current (HVDC) transmission system |
| 08/08/2001 | CN1307407A Pulse signal transmitting method in power line |
| 08/08/2001 | CN1069476C Method and device for removing double picture with standered symbol represented digital code |
| 08/07/2001 | US6272241 Pattern recognition |
| 08/07/2001 | US6272173 Efficient fir filter for high-speed communication |
| 08/07/2001 | US6272106 Method and device for detecting double-talk, and echo canceler |
| 08/07/2001 | US6272001 Emergency stop switch and emergency stop switch circuit |
| 08/07/2001 | CA2246757C Echo canceler |
| 08/07/2001 | CA2174159C Acoustic echo canceler |
| 08/07/2001 | CA2162538C Echo cancelling system suitable for voice conference |
| 08/07/2001 | CA2162413C Optimization of adaptive filter tap settings for subband acoustic echo cancelers in teleconferencing |
| 08/02/2001 | WO2001056263A1 Improved system and method for implementation of an echo canceller |
| 08/02/2001 | WO2001056209A1 Radio base station device and radio communication method |
| 08/02/2001 | WO2001056185A2 Battery injection and loop supervision for dsl environment |
| 08/02/2001 | WO2001056184A1 System and method for the application of an lms method to updating an echo canceller in an adsl modem |
| 08/02/2001 | US20010010712 Circuit and method for providing a digital data signal with pre-distortion |
| 08/02/2001 | CA2396162A1 System and method for the application of an lms method to updating an echo canceller in an adsl modem |
| 08/01/2001 | EP1119928A1 Method for equalization of complementary carriers in an am compatible digital audio broadcast system |
| 08/01/2001 | EP1119924A1 Method and circuit arrangement for transmitting data to power lines |
| 08/01/2001 | CN2441265Y Multi-digit repeatable random number decoder |
| 08/01/2001 | CN1306352A Test method of echo cancel function |
| 07/31/2001 | US6269204 Method and system for monitoring of optical transmission lines |
| 07/31/2001 | US6269161 System and method for near-end talker detection by spectrum analysis |
| 07/31/2001 | US6269114 Monitor particularly suited for Naval Tactical Data System (NTDS) interfaces types A and B |
| 07/31/2001 | CA2241967C Data communication apparatus |
| 07/31/2001 | CA2238451C Co-channel interference canceler and method therefor |
| 07/31/2001 | CA2189489C Method and apparatus for reducing residual far-end echo in voice communication networks |
| 07/26/2001 | WO2001054382A1 Method and system for controlling echo cancellation using zero echo path, ringing, and off-hook detection |
| 07/26/2001 | WO2001054298A1 Full duplex communication system with power transfer on one pair of conductors |
| 07/26/2001 | WO2001054297A1 Method of isolating data in a power line communication network |
| 07/26/2001 | WO2001053656A1 Downhole electrical transmission system |
| 07/26/2001 | DE19963800A1 Verfahren und Vorrichtung zur Umsetzung eines bidirektionalen SO-Datenstroms für eine Übermittlung über ein Niederspannungsstromnetz Method and apparatus for implementing a bidirectional SO-data stream for transmission via a low-voltage power network |
| 07/26/2001 | DE19937505C2 Empfangsverfahren und Empfängeranordnung für ein Duplex-Übertragungssystem Receiving method and receiver arrangement for a duplex transmission system |
| 07/26/2001 | DE10002227A1 Network connection for use in vehicles, uses twisted wires suitable for data transmission and energy transmission to connect users of network |
| 07/26/2001 | CA2397954A1 Method of isolating data in a power line communication network |
| 07/25/2001 | EP1119172A2 Network echo canceller |
| 07/25/2001 | EP1118840A1 Echo-cancelling optical microphone |
| 07/25/2001 | EP1118247A2 Band-limited adaptive feedback canceller for hearing aids |
| 07/25/2001 | EP1118245A2 Line terminator unit for a subscriber line |
| 07/25/2001 | EP1118195A1 Method and apparatus for demodulating and equalizing an am compatible digital audio broadcast signal |
| 07/25/2001 | EP1118167A1 Method and device for transmitting data over low-voltage networks |
| 07/25/2001 | CN1305335A LAN controlled sound system |
| 07/25/2001 | CN1305271A Transmission method of grading multidimensional frequency in power line network |
| 07/24/2001 | US6266422 Noise canceling method and apparatus for the same |
| 07/24/2001 | US6266409 Echo canceller employing dual-H architecture having improved double-talk detection |
| 07/24/2001 | US6266408 Echo controlling apparatus of video conferencing system and control method using the same |
| 07/24/2001 | US6266395 Single-ended subscriber loop qualification for xDSL service |
| 07/24/2001 | US6266347 System and method for modifying symbol duration for the efficient transmission of information in a time duplex noise environment |
| 07/24/2001 | US6265907 Signal transmission circuit having intermediate amplifier circuit |
| 07/24/2001 | US6265655 Signal-transmitting connection with protection against magnetic field interference |
| 07/19/2001 | WO2001052516A2 Diagnostic methods and systems for multicarrier modems |
| 07/19/2001 | WO2001052515A1 Appliance communication and control system and appliances for use in same |
| 07/19/2001 | WO2001052507A1 Method and system for detecting and controlling severe echo |
| 07/19/2001 | WO2001052439A1 Systems and methods for loop length and bridged tap length determination of a transmission line |
| 07/19/2001 | WO2001052438A1 Method and processor in a telecommunication system |
| 07/19/2001 | WO2001002929A3 Coded domain noise control |
| 07/19/2001 | US20010008548 Interface circuit and method for digital signals |
| 07/19/2001 | US20010008391 Transmitting device, receiving device, and receiving method |
| 07/19/2001 | DE19963817A1 Verfahren und Vorrichtung zum Umsetzung eines bidirektionalen S2m-Datenstroms für eine Übermittlung über ein Niederspannungsstromnetz Method and apparatus for implementing a bidirectional S2m data stream for transmission via a low-voltage power network |
| 07/19/2001 | DE19963816A1 Verfahren und Vorrichtung zur Umsetzung eines bidirektionalen SO-Datenstroms für eine Übermittlung über ein Niederspannungsstromnetz Method and apparatus for implementing a bidirectional SO-data stream for transmission via a low-voltage power network |
| 07/19/2001 | DE19963815A1 Anordnung zur Übermittlung eines bidirektionalen ISDN-Datenstroms über ein Niederspannungsstromnetz Arrangement for the transmission of a bidirectional ISDN data stream via a low voltage power network |
| 07/19/2001 | DE10101196A1 Interfaceschaltung und Verfahren für Digitalsignale Interface Circuit and method for digital signals |
| 07/19/2001 | DE10000009A1 Echo signal reduction-correction procedure for telecommunication network, involves detecting quality values of each terminal based on which countermeasures for echo reduction is estimated |
| 07/19/2001 | CA2788662A1 Diagnostic methods and systems for multicarrier modems |
| 07/19/2001 | CA2687472A1 Systems and methods for loop length and bridged tap length determination of a transmission line |
| 07/18/2001 | EP1117219A1 Frequency offset correction in the presence of intersymbol interference |
| 07/18/2001 | EP1117191A1 Echo cancelling method |
| 07/18/2001 | EP1117179A2 Digital Graphic/Parametric Equalizer |
| 07/18/2001 | EP1116365A1 Methods and circuits for generating a preemphasis waveform |
| 07/18/2001 | EP0932943B1 Interface device of bi-directional connection of currents carrying low voltage/radiofrequency |
| 07/18/2001 | EP0839428A4 Reconfigurable on-demand telephone and data line system |
| 07/18/2001 | EP0736235B1 Method for determining the location of echo in an echo canceller |
| 07/18/2001 | CN1304585A Differential line driver |
| 07/18/2001 | CN1068742C Method for determining location of echo in echo cancellar |
| 07/17/2001 | CA2117648C Circuitry for superimposing small, low energy signals and large, essentially higher energy signals |
| 07/12/2001 | WO2001050714A1 Band-by-band full duplex communication |
| 07/12/2001 | WO2001050697A1 Approach for processing data received from a communications channel in finite precision arithmetic applications |
| 07/12/2001 | WO2001050695A1 Method for equalizing data received |
| 07/12/2001 | WO2001050629A1 TRANSPOSING A BI-DIRECTIONAL S2m DATA STREAM FOR TRANSMISSION VIA A LOW-VOLTAGE NETWORK |
| 07/12/2001 | WO2001050628A1 Transposing a bi-directional s0 data stream for transmission via a low-voltage network |
| 07/12/2001 | WO2001050627A1 System for transmitting a bi-directional isdn data stream over a low-voltage electric network |
| 07/12/2001 | WO2001050626A2 Conversion of a bi-directional s0 data stream for transmission over a low-voltage electric network |
| 07/12/2001 | WO2001050625A2 Conversion of a two-directional so data stream for transmission via a low voltage power network |
| 07/12/2001 | WO2001050623A1 Method and apparatus for rf common-mode noise rejection in a dsl receiver |
| 07/12/2001 | WO2001050600A1 Amplifier ctb reduction by phase filtering |
| 07/12/2001 | WO2001022710A8 Voice and data exchange over a packet based network |
| 07/12/2001 | US20010007582 Data transmitting apparatus, automatic level adjustment method and activation control method |
| 07/12/2001 | US20010007580 Method and device for processing signals of a digital transmission system |
| 07/12/2001 | DE19963620A1 Determining transmission path transfer characteristic involves using test signal composed of mutually orthogonal carrier frequencies, data sequence enabling noisy carrier signal reconstruction |
| 07/12/2001 | DE10000662A1 Signal transmission device has local and return lines defined between terminal stations via conductor, local mass connection, zero conductor of power supply or high passport coupled to power supply line |