| Patents for H04B 3 - Line transmission systems (31,523) |
|---|
| 09/02/1993 | WO1993017275A1 Pipe for conveying a medium |
| 09/02/1993 | DE4306081A1 Automatic warning appts. for breakage in cable - detects if abnormal condition exists in cable and then automatically switches over to spare cable and continues transmission if no further abnormal condition is detected |
| 09/01/1993 | EP0558312A1 Adaptive noise reduction circuit for a sound reproduction system |
| 09/01/1993 | EP0557829A2 Process and device for adaptive digital cancellation of the echo generated in non-stationary telephone connections |
| 08/27/1993 | CA2130895A1 Process for detecting non-linear behavior in a digital data transmission path to be examined |
| 08/24/1993 | US5239559 Signal line impedance matching terminator apparatus |
| 08/19/1993 | WO1993016537A1 High speed modem systems incorporating distribution preserving tomlinson encoding and decoding for secondary channels |
| 08/19/1993 | WO1993016527A1 Method and apparatus for ghost cancelling and/or equalizing |
| 08/19/1993 | CA2129030A1 High speed modem systems incorporating distribution preserving tomlinson encoding and decoding for secondary channels |
| 08/18/1993 | EP0555869A2 High rate/low rate bidirectional data transmission apparatus |
| 08/18/1993 | EP0555289A1 Channel equalisation in particular for fading channels. |
| 08/18/1993 | EP0408580B1 Device for in-process monitoring of transmission systems |
| 08/17/1993 | US5237562 Echo path transition detection |
| 08/17/1993 | CA1321416C Crosstalk reduction in unshielded twisted-pair lines |
| 08/17/1993 | CA1321414C Transmission system |
| 08/17/1993 | CA1321413C Non-interfering method for measuring propagation delay over telecommunications network and apparatus for accomplishing same |
| 08/11/1993 | EP0554494A1 Non-recursive digital adaptive filter |
| 08/11/1993 | EP0408581B1 Process and device for addressing processing units |
| 08/11/1993 | CN2140115Y Miniature combined current-equal broad-=band power choker |
| 08/10/1993 | US5235647 Digital transmission system, an apparatus for recording and/or reproducing, and a transmitter and a receiver for use in the transmission system |
| 08/10/1993 | CA1321273C Circuit arrangement for the regeneration of digital signals received in analog form |
| 08/05/1993 | WO1993015564A1 Near-end communications line characteristic measuring system |
| 08/05/1993 | WO1993015563A1 Test signal transmission between stations for group delay measurement |
| 08/05/1993 | WO1993015552A1 Modem including an equalizer for amplitude jitter |
| 08/05/1993 | WO1993015539A1 Device for providing electric power from a signal transmitter |
| 08/04/1993 | EP0554121A2 Line termination circuit |
| 08/04/1993 | EP0554120A2 Adaptive transversal equalizer |
| 08/04/1993 | EP0553873A1 Cross polarization interference compensating device comprising decision feedback cross polarization interference cancellers |
| 08/04/1993 | EP0395739B1 Process for controlling and/or monitoring and circuit arrangement for implementing the process |
| 08/03/1993 | US5233663 Simultaneous interpretation system |
| 08/03/1993 | US5233635 Receiving method and receiver for discrete signals |
| 08/03/1993 | US5233550 Adaptive balance filter |
| 07/29/1993 | DE4202275A1 Signal transmission between central and mobile units - uses neutral, and data rails for digital signal traffic |
| 07/29/1993 | DE4202206A1 A-D compensator with level control for fork circuit - has digital filter simulating circuit transfer function adjustable by digital control |
| 07/27/1993 | CA2024353C Volterra linearizer for digital transmission |
| 07/27/1993 | CA2007922C Parallel mode adaptive transversal equalizer for high-speed digital communications system |
| 07/22/1993 | WO1993014566A1 Apparatus for reducing the risk of undesirable parameterdrift of an adaptive filter used for echo cancellation |
| 07/22/1993 | CA2125658A1 Apparatus for reducing the risk of undesirable parameter drift of an adaptive filter used for echo cancellation |
| 07/21/1993 | EP0552046A2 Complementary logic circuit |
| 07/21/1993 | EP0388441B1 Apparatus and method for a secure and diagnosable antijabber communication |
| 07/20/1993 | US5230007 Method for optimizing an adaptive filter update coefficient |
| 07/20/1993 | US5230006 Adaptive equalizer capable of effectively removing a remaining fading in an equalized signal |
| 07/20/1993 | US5229725 Electrical fault detector in remote systems using a saturable core |
| 07/14/1993 | EP0551081A2 Adaptive equalizer and receiver |
| 07/13/1993 | US5228060 Control unit for controlling modem used in receiver |
| 07/13/1993 | US5228058 Adaptive equalizer |
| 07/13/1993 | US5227762 Power line carrier controlled lighting system |
| 07/13/1993 | US5227754 Magnetic flux transmission system |
| 07/13/1993 | US5227677 Zero power transmission line terminator |
| 07/13/1993 | US5226835 Patch plug for cross-connect equipment |
| 07/13/1993 | CA1320291C Remote testing of metallic loops with a trans hybrid signal |
| 07/07/1993 | EP0550316A1 Transmission line equaliser |
| 07/06/1993 | US5226060 Modem receiver with nonlinear equalization |
| 07/06/1993 | US5226059 DSP line equalizer |
| 07/06/1993 | CA2004379C Echo canceller with means for determining filter coefficients from autocorrelation and cross-correlation coefficients |
| 07/01/1993 | DE4142299A1 Communications system termination unit, e.g. for telephone - calculates voltage ratio of repeater on connecting two wire with four wire transmission line |
| 06/30/1993 | EP0549019A2 Decision feedback equalisation system with low error propagation |
| 06/29/1993 | US5224149 Testing system for digital transmission lines |
| 06/29/1993 | US5223806 Method and apparatus for reducing electromagnetic interference and emission associated with computer network interfaces |
| 06/29/1993 | CA2002585C Demodulator with composite transversal equalizer and eye detection clock synchronizer |
| 06/24/1993 | WO1993012584A1 Inbound communications using electricity distribution network |
| 06/22/1993 | US5222251 Method for eliminating acoustic echo in a communication device |
| 06/22/1993 | US5222119 Communication system and a method, to detect a power exposure of a communication line |
| 06/22/1993 | US5222084 Echo canceler having adaptive digital filter unit associated with delta-sigma modulation circuit |
| 06/16/1993 | EP0546596A1 Device to carry out the processing of signals comprising a least squares method |
| 06/15/1993 | US5220466 Method and apparatus for digital filter control in a partial-response maximum-likelihood disk drive system |
| 06/14/1993 | EP0573412A4 Interconnecting and processing system for facilitating frequency hopping. |
| 06/09/1993 | EP0544875A1 Apparatus for adjusting signal points, equalizer gains and the like |
| 06/09/1993 | EP0495001A4 Field-mounted control unit |
| 06/09/1993 | CN2135882Y Power line carrier broadcasting transmitter |
| 06/09/1993 | CN2135881Y Electric signal two-direction amplifier for fine turning transmission coefficient |
| 06/08/1993 | US5218714 CATV repeating amplifier circuitry |
| 06/08/1993 | US5218560 Circuit for controlling tap gains at rapid speed in an adaptive filter |
| 06/08/1993 | CA1318953C Twisted pair adapter |
| 06/08/1993 | CA1318952C Adaptive digital filter and an echo canceler incorporating the same |
| 06/02/1993 | EP0544436A1 Identification of the transmission characteristics of a communication path |
| 06/01/1993 | US5216611 Integrated enroute and approach guidance system for aircraft |
| 06/01/1993 | CA2006829C Self-adaptive equalizer circuit for a differentially coherent demodulation installation |
| 05/27/1993 | WO1993010607A1 Device and method for linear listener echo cancellation |
| 05/27/1993 | DE4138065A1 Data and energy transmission system for several subscribers - uses two=wire screened lead with data and power being differentially transmitted with symmetrical signals along wires and screen sheath used as return path for supply current |
| 05/27/1993 | CA2083532A1 Signal processing system involving a least squares method |
| 05/26/1993 | EP0543623A1 Communication link between the stationary and the rotating parts of a CT scanner |
| 05/26/1993 | EP0543568A2 High resolution filtering using low resolution processors |
| 05/26/1993 | EP0543274A2 Method and apparatus for controlling a residual echo limiter |
| 05/26/1993 | EP0542882A1 Residual echo elimination |
| 05/26/1993 | CN1020999C Digital carrier communicator for distribution network |
| 05/26/1993 | CN1020998C Comprehensive administration and metering apparatus and method for distribution network power consumption information |
| 05/26/1993 | CN1020997C Digital carrier communication system and method for distribution network |
| 05/25/1993 | US5214675 System and method for calculating channel gain and noise variance of a communication channel |
| 05/25/1993 | US5214671 Adaptive equalizer |
| 05/25/1993 | US5214505 Automatic rf equalization in passenger aircraft video distribution system |
| 05/25/1993 | US5214318 Semiconductor integrated circuit device having a signal transmission line pair interconnected by propagation delay time control resistance |
| 05/25/1993 | US5214312 Power feed line switching circuit for submarine branching device and method of feeding power to submarine cable communication system |
| 05/19/1993 | CA2083078A1 Reflected optical power fiber test system |
| 05/18/1993 | CA1318003C Digital echo canceller |
| 05/13/1993 | WO1993009612A1 Alarm and test system with improved coupling circuit for a digital added main line |
| 05/13/1993 | WO1993009611A1 A method of converging an echo canceller |
| 05/13/1993 | WO1993009610A1 An arrangement for the control of an echo canceller |
| 05/13/1993 | WO1993009609A1 A method for non-linear signal processing in an echo canceller |
| 05/13/1993 | WO1993009608A1 A method of preventing a divergence of an adaptive echo canceller in a noisy signal environment |