| Patents for H04B 3 - Line transmission systems (31,523) |
|---|
| 04/23/1997 | CN1148305A Feeding unbalance detector in repeated line |
| 04/22/1997 | US5623543 Two port signalling voltages filter arrangement |
| 04/22/1997 | US5623531 Auxiliary power for telephone distribution system |
| 04/22/1997 | US5623513 Mitigating clipping and quantization effects in digital transmission systems |
| 04/22/1997 | US5623377 Filtering a read signal to attenuate secondary pulses caused by pole tips of a thin film magnetic read head |
| 04/22/1997 | US5623318 Ghost cancelling method and apparatus using canonical signed digit codes |
| 04/22/1997 | CA2102504C A method for eliminating acoustic echo in a communication device |
| 04/17/1997 | WO1997014230A1 An adaptive echo cancellation method |
| 04/17/1997 | WO1997014227A1 Co-channel interference reduction |
| 04/17/1997 | DE19537772A1 Hands-free communication system for telephone terminal |
| 04/16/1997 | EP0768789A2 Method and circuit arrangement for speech detection of a remote subscriber in a telephone terminal |
| 04/16/1997 | EP0687398A4 Receive side pulse width controlled adaptive equalizer |
| 04/16/1997 | EP0632947A4 Method and apparatus of adaptive maximum likelihood sequence estimation using filtered correlation synchronization. |
| 04/16/1997 | CN2252458Y Two-wire building space intercom |
| 04/16/1997 | CN1147884A Method and apparatus for interfacing between a twisted pair and an intelligent cell |
| 04/15/1997 | US5621800 Integrated circuit that performs multiple communication tasks |
| 04/15/1997 | US5621724 Echo cancelling device capable of coping with deterioration of acoustic echo condition in a short time |
| 04/15/1997 | US5621344 Circuit arrangement for coupling a first electric signal into a second electric signal |
| 04/15/1997 | CA2071241C Method and arrangement of echo elimination in digital telecommunications system |
| 04/14/1997 | CA2187812A1 Method and circuit arrangement for detecting speech in a telephone terminal from a remote speaker |
| 04/10/1997 | WO1997013389A1 Providing services in a telecommunications network |
| 04/10/1997 | WO1997013186A1 Device for the operation of appliances, utilities and services within a building |
| 04/09/1997 | EP0767570A2 Equalization of speech signal in mobile phone |
| 04/09/1997 | EP0767569A1 Method and device for adaptive identification and related adaptive echo canceller |
| 04/09/1997 | EP0767545A1 LAN equalizer |
| 04/09/1997 | EP0767462A2 Process for reducing the pre-echoes or post-echoes affecting audio recordings |
| 04/08/1997 | US5619539 Data detection methods and apparatus for a direct access storage device |
| 04/08/1997 | US5619515 On-vehicle electronic apparatus |
| 04/02/1997 | EP0766413A2 Fast response gain tracker for echo canceller |
| 04/02/1997 | EP0766412A2 Echo canceller using initial training |
| 04/02/1997 | EP0766411A2 Method and apparatus for reducing communications echo signal |
| 04/02/1997 | EP0766390A2 Time domain filter for a communication channel |
| 04/02/1997 | CN1146837A TX preemphasis filter and TX power control based high speed two-wire modem |
| 04/01/1997 | US5617450 Digital subscriber loop interface unit |
| 03/30/1997 | CA2186417A1 Echo canceler gain tracker for cellular modems |
| 03/30/1997 | CA2186405A1 Echo canceling method and apparatus for data over cellular |
| 03/30/1997 | CA2186404A1 Echo cancelling method and apparatus for data over cellular |
| 03/27/1997 | WO1997011538A1 An adaptive filter for signal processing and method therefor |
| 03/27/1997 | WO1997011534A1 Information transmission system for the simultaneous transmission of digital base band and wide-band signals via a two-wire line |
| 03/27/1997 | WO1997011533A1 A directional acoustic signal processor and method therefor |
| 03/27/1997 | WO1997011527A1 Transmission system using time dependent filter banks |
| 03/27/1997 | WO1997011395A2 Coil support device for an underwater cable |
| 03/27/1997 | WO1997011394A2 Electrical power distribution and communication system for an underwater cable |
| 03/27/1997 | DE19535728A1 Undistorted transmission of analogue audio signals |
| 03/26/1997 | EP0765067A2 Loop gain processing system for speakerphone applications |
| 03/26/1997 | EP0765066A2 Efficient speakerphone anti-howling system |
| 03/26/1997 | EP0765047A1 Method for measuring a signal transmission delay time station, terminal station and network system to perform this method |
| 03/26/1997 | EP0502176B1 Power line communication system |
| 03/26/1997 | CN1146104A Correcting system for long-distance video cable transmission |
| 03/25/1997 | US5615034 Optical micro cell transmission system |
| 03/25/1997 | US5614873 Electronic circuit |
| 03/23/1997 | CA2186148A1 Method for measuring a signal transmission delay time, central station, terminal station and network system to perform this method |
| 03/20/1997 | WO1997010664A1 Adaptive multimode equaliser |
| 03/19/1997 | EP0763877A2 Communication system |
| 03/19/1997 | EP0763298A1 Vehicle communications network transceiver, ground translation circuit therefor |
| 03/19/1997 | EP0763280A1 Signal processing device |
| 03/19/1997 | EP0763279A1 High speed transport system |
| 03/19/1997 | CN1145701A Process for the low-energy interrogation of binary states over long lines |
| 03/19/1997 | CN1145700A Reducing crosstalk connector |
| 03/18/1997 | US5612996 Loop gain processing system for speakerphone applications |
| 03/18/1997 | CA2045250C Echo canceler having adaptive digital filter unit associated with delta-sigma modulation circuit |
| 03/14/1997 | CA2185481A1 Directory assistance method and apparatus |
| 03/13/1997 | DE19533113A1 Vorrichtung zum Messen der Signallaufzeit einer digitalen Übertragungseinrichtung Apparatus for measuring the signal propagation delay of a digital transmission facility |
| 03/12/1997 | EP0762697A2 Driver and receiver circuit for data communication device |
| 03/12/1997 | EP0762667A2 Measuring device of the propagation time in a digital transmission system |
| 03/12/1997 | EP0761042A1 Method and apparatus for mitigating interference in a communication system |
| 03/11/1997 | US5610909 Multistage echo canceler including time variation compensation |
| 03/06/1997 | WO1997008841A1 Receiving method and receiver |
| 03/06/1997 | WO1997008629A1 Methods and systems for designing and making signal-processor circuits with internal companding, and the resulting circuits |
| 03/05/1997 | EP0760575A2 Echo canceller with adaptive and non-adaptive filters |
| 03/05/1997 | EP0760574A2 Echo canceller system with shared coefficient memory |
| 03/05/1997 | EP0760184A1 In-line predistorter for linearization of electronic and optical signals |
| 03/05/1997 | EP0583398A4 Drive amplifier for power line communications |
| 03/04/1997 | US5608804 Method of and apparatus for identifying a system with adaptive filter |
| 03/04/1997 | US5608757 High speed transport system |
| 02/27/1997 | WO1997007605A1 Compensation of dispersion |
| 02/27/1997 | WO1997007047A1 Communications system |
| 02/26/1997 | EP0759243A1 Method and system for compensating for coupling between circuits of quaded cable in a telecommunication transmission system |
| 02/26/1997 | EP0759236A1 Band power echo reducer for multifrequency signal detectors |
| 02/26/1997 | EP0759235A1 Method and apparatus for reducing residual far-end echo in voice communication networks |
| 02/25/1997 | US5606550 Echo canceller and method for a voice network using low rate coding and digital speech interpolation transmission |
| 02/25/1997 | US5606250 Measurement device with common mode current cancellation |
| 02/20/1997 | WO1997006623A1 Data receiving method for receiving data through predetermined clear zones of a powerline |
| 02/20/1997 | WO1997006610A1 Improvements in or relating to power switching of optical fibre cable branching units |
| 02/19/1997 | EP0758817A1 Equaliser for digital signals |
| 02/19/1997 | EP0758507A1 Tx preemphasis filter and tx power control based high speed two-wire modem |
| 02/19/1997 | CN2247899Y Communication cable theftproof positioning alarm device |
| 02/19/1997 | CN1143286A Communication device with improved echo and noise control in quantization channel |
| 02/18/1997 | US5604799 Switching type echo canceler |
| 02/18/1997 | US5604769 Hybrid equalizer arrangement for use in data communications equipment |
| 02/18/1997 | CA2117035C Method and apparatus for rapid identification of an unknown system based on an echo signal having a plurality of dispersive portions |
| 02/18/1997 | CA2099575C Adaptive acoustic echo canceller |
| 02/13/1997 | WO1997005730A1 Assessment of signal quality |
| 02/13/1997 | WO1997005494A1 Lan tester |
| 02/11/1997 | US5602927 Vehicle internal noise reduction system and the method thereof |
| 02/11/1997 | US5602926 Method and apparatus of determining the sound transfer characteristic of an active noise control system |
| 02/11/1997 | US5602913 Robust double-talk detection |
| 02/11/1997 | US5602871 Signal regenerator for binary signals |
| 02/11/1997 | US5602869 Adaptive transmit levels for modems operating over cellular |
| 02/11/1997 | US5602507 Adaptive demodulating method for generating replica and demodulator thereof |