| Patents for H04B 3 - Line transmission systems (31,523) |
|---|
| 01/12/1999 | US5859914 Acoustic echo canceler |
| 01/12/1999 | US5859907 Echo canceler and echo path estimating method |
| 01/12/1999 | US5859872 High speed communications system for analog subscriber connections |
| 01/07/1999 | WO1999000907A1 Transmission of fm video signals over various lines |
| 01/07/1999 | WO1999000906A2 System and method for distributing rf signals |
| 01/07/1999 | WO1998037657A3 High speed communications system for analog subscriber connections |
| 01/07/1999 | EP0889602A2 Data transmission system for transmission of data on at least one power cable |
| 01/07/1999 | DE19728270A1 Data transmission system using supply network |
| 01/07/1999 | CA2242432A1 Apparatus and methods for power network coupling |
| 01/06/1999 | CN1204425A Method and device for echo cancellation using power estimation in residual signal |
| 01/05/1999 | US5857167 Combined speech coder and echo canceler |
| 01/05/1999 | US5857019 Apparatus and method for providing a telephone user with control of the threshold volume at which the user's voice will take control of a half-duplex speakerphone conversation |
| 01/05/1999 | US5856776 Method and apparatus for signal coupling at medium voltage in a power line carrier communications system |
| 01/05/1999 | CA2112549C Echo canceller with adaptive suppression of residual echo level |
| 01/05/1999 | CA2057657C Power feeding system for an optical transmission system |
| 12/30/1998 | WO1998059431A1 Methods and apparatus for echo suppression |
| 12/30/1998 | WO1998059426A1 PERFORMANCE CUSTOMIZATION SYSTEM AND PROCESS FOR OPTIMIZING xDSL PERFORMANCE |
| 12/30/1998 | WO1998059254A1 Improved universal lan power line carrier repeater system and method |
| 12/30/1998 | EP0887977A2 Generation of addresses for a coefficient memory in an equaliser for multicarrier signals |
| 12/30/1998 | EP0887957A2 Control system for telecommunications systems using feedback |
| 12/30/1998 | EP0887956A1 Optical telecommunications system with chromatic dispersion compensator |
| 12/30/1998 | EP0709010A4 Power coupler for coupling power from a transmission line to a node thereon |
| 12/30/1998 | CN2302617Y High building intercom distributer |
| 12/30/1998 | CN1203711A Echo cancelling system for digital telephony applications |
| 12/30/1998 | CA2241010A1 Adaptive pre-distortion apparatus for linearizing an amplifier output within a data transmission system |
| 12/29/1998 | CA2151779C Adaptive filter capable of removing a residual echo at a rapid speed |
| 12/29/1998 | CA2136887C High speed quantization-level-sampling modem with equalization arrangement |
| 12/23/1998 | WO1998039855A3 Method for measuring crosstalk in electric telecommunication systems |
| 12/23/1998 | EP0847559A4 Methods and systems for designing and making signal-processor circuits with internal companding, and the resulting circuits |
| 12/23/1998 | CN1203013A Variable length burst transmission over the physical layer of a multilayer transmission format |
| 12/23/1998 | CN1041374C Network echo canceller |
| 12/23/1998 | CN1041373C Near-end communications line characteristic measuring systems |
| 12/23/1998 | CA2241043A1 Optical telecommunications system |
| 12/22/1998 | US5852785 Secure access telephone extension system and method in a cordless telephone system |
| 12/22/1998 | US5852661 Adaptive echo cancellation used with echo suppression to reduce short and long duration echoes |
| 12/22/1998 | CA2122831C Inbound communications using electricity distribution network |
| 12/22/1998 | CA2119625C Equalization technique for compensating for degradation to the transmission of digitally modulated signals |
| 12/22/1998 | CA2087520C System and method for calculating channel gain and noise variance of a communication channel |
| 12/17/1998 | WO1998057468A2 Dc suppression for pcm modems |
| 12/17/1998 | WO1998057462A1 Automated home control using existing electrical lines as a communications medium |
| 12/17/1998 | WO1998057455A1 System and method for transmission of audio signals to remote locations using a power line carrier |
| 12/17/1998 | WO1998057440A2 Data transmission over a power line communications system |
| 12/17/1998 | WO1998057439A1 Data transmission over a power line communications system |
| 12/17/1998 | WO1998057438A1 Cable length estimation circuit using data signal edge rate detection and analog to digital conversion |
| 12/17/1998 | DE19725115A1 CBFS gate for interconnected low voltage distribution networks |
| 12/17/1998 | DE19639031A1 voltage stabilisation circuit for integrated power driver |
| 12/17/1998 | CA2425421A1 Dc suppression for pcm modems |
| 12/16/1998 | EP0884926A1 Method and device for optimized processing of an interfering signal when recording sound |
| 12/16/1998 | EP0884886A2 Echo canceler employing multiple step gains |
| 12/16/1998 | EP0884868A2 Measurement of the eye-opening of optical signals by optical sampling |
| 12/16/1998 | EP0884859A2 Extended feedback circuit for impedance matching and voltage isolation |
| 12/16/1998 | EP0883935A1 Method and apparatus for computing measures of echo |
| 12/16/1998 | EP0607393B1 Neural filter architecture for the non-linear, adaptative elimination of disturbing interferences |
| 12/16/1998 | CN1202253A Device for operation of apparatus, facilities and services within a building |
| 12/16/1998 | CN1202052A Apparatus for inspecting outer lines and method for detecting faults |
| 12/16/1998 | CN1202051A Echo canceler employing multiple step gains |
| 12/09/1998 | EP0882361A1 Wideband signal distribution system |
| 12/09/1998 | EP0882332A1 System for data transmission, remote sensing, remote controls, remote readings and the like, particularly suitable for the electric power distribution lines |
| 12/09/1998 | CN2300215Y Signal transmission line DC offset extra equipment |
| 12/09/1998 | CN1201212A Site apparatus and site bus-line system, and method for controlling site apparatus therefor |
| 12/08/1998 | US5848384 Analysis of audio quality using speech recognition and synthesis |
| 12/08/1998 | US5848061 In a digital telecommunications system |
| 12/08/1998 | US5848054 For use in a two way communication system |
| 12/08/1998 | CA2060667C Adaptive sparse echo canceller using a sub-rate filter for active tap selection |
| 12/03/1998 | WO1998054893A2 Video signal equalization system |
| 12/03/1998 | WO1998054879A1 Method and apparatus for detecting a secondary destination of a telephone call based on signal path changes |
| 12/03/1998 | WO1998054844A1 Centralized channel selection in a distributed rf antenna system |
| 12/03/1998 | WO1998054843A1 Power transfer apparatus for concurrently transmitting data and power over data wires |
| 12/03/1998 | WO1998042082A3 Method and arrangement for forming an address |
| 12/03/1998 | CA2291678A1 Method and apparatus for detecting a secondary destination of a telephone call based on signal path changes |
| 12/02/1998 | EP0880843A1 Data receiving method for receiving data through predetermined clear zones of a powerline |
| 12/02/1998 | EP0544875B1 Apparatus for adjusting signal points, equalizer gains and the like |
| 12/02/1998 | CN1200590A Arrangement for compensating central remote control signals and harmonic wave attenuations from power net-works |
| 12/01/1998 | US5845190 Cable access device and method |
| 12/01/1998 | US5844950 Cross polarization interference canceler and cross polarization interference eliminating apparatus using the same |
| 12/01/1998 | US5844949 Power line communication system |
| 12/01/1998 | US5844946 Soft-decision receiver and decoder for digital communication |
| 12/01/1998 | US5844789 Impedence regulator to block power line interference |
| 12/01/1998 | CA2120598C Outbound signal detector system and method |
| 11/26/1998 | WO1998053595A1 Method and device for reducing multi-channel acoustic echo and adapting sound to space conditions |
| 11/26/1998 | WO1998034351A3 Bidirectional communication system having symmetrical transmission rates |
| 11/25/1998 | EP0880261A2 Echo canceller and adapting method thereof |
| 11/25/1998 | EP0880260A2 Echo/noise canceler with delay compensation |
| 11/25/1998 | EP0880253A2 Blind training of a decision feedback equalizer |
| 11/25/1998 | EP0880202A2 Low-crosstalk electrical connector grouping like conductors together |
| 11/25/1998 | EP0879527A1 Training process |
| 11/25/1998 | EP0879504A1 Repeater for transmission system for controlling and determining the status of electrical devices from remote locations |
| 11/25/1998 | CN1200210A An adaptive dual filter echo cancellation method |
| 11/25/1998 | CN1199975A Handfree phone |
| 11/24/1998 | US5841856 Hands-free telephone set |
| 11/24/1998 | US5841810 Multiple stage adaptive equalizer |
| 11/24/1998 | US5841809 Access line termination unit |
| 11/24/1998 | US5841467 Ground isolation circuit for isolating a transmission line from ground interference |
| 11/24/1998 | US5841205 Branching unit for underwater telecommunications systems |
| 11/24/1998 | CA2136403C Cable crosstalk measurement system |
| 11/24/1998 | CA2120714C Method and apparatus of estimating channel quality in a receiver |
| 11/19/1998 | WO1998052329A1 Equalising and decoding device for a frequency-selective digital transmission channel |
| 11/19/1998 | WO1998052294A1 Wide band transmission through wire |
| 11/18/1998 | EP0878950A1 Data communication equipment |
| 11/18/1998 | EP0878949A2 Hands-free telephone |