| Patents for H04B 3 - Line transmission systems (31,523) |
|---|
| 10/20/1987 | US4701936 Apparatus and method for adjusting the receivers of data transmission channels |
| 10/14/1987 | EP0241069A1 Adaptive transversal filter |
| 10/14/1987 | EP0240833A1 Monitoring apparatus for monitoring the operation mode of transmission devices of the information transmission technique |
| 10/13/1987 | US4700342 Remote repeater in transmission bus system |
| 10/08/1987 | DE3711602A1 Datenuebertragungsanordnung Datenuebertragungsanordnung |
| 10/08/1987 | DE3706430A1 Transmission of information via the earth wires of high-voltage overhead lines |
| 10/07/1987 | EP0240056A1 Adaptive filter for producing and echo cancellation signal in a transceiver system for duplex digital communication through one single pair of conductors |
| 10/07/1987 | EP0240055A1 Arrangement for compensating for non-linear distortion in an input signal to be digitized and an echo cancelling system comprising such an arrangement |
| 10/07/1987 | EP0239959A2 Analogous and/or digital information transmission method, particularly with the insertion of one, two or several exchanges in telecommunication installations |
| 10/07/1987 | CN87102279A Adaptive blind equalization method and device |
| 10/01/1987 | DE3610906A1 Method and circuit arrangement for adaptive equalisation and adaptive echo cancellation in terminals for duplex transmission |
| 10/01/1987 | DE3610905A1 Method and circuit arrangement for adaptive equalisation and adaptive echo cancellation in terminals for duplex transmission |
| 10/01/1987 | DE3610382A1 Circuit arrangement for adaptive echo cancellation in terminals for duplex transmission |
| 09/30/1987 | EP0239153A2 Adaptive blind equalization method and device |
| 09/30/1987 | EP0238813A2 Method for transmitting data over mains lines |
| 09/29/1987 | US4697261 In a two-way communications network |
| 09/29/1987 | US4697166 Method and apparatus for coupling transceiver to power line carrier system |
| 09/29/1987 | US4697051 Data transmission system |
| 09/29/1987 | CA1227541A1 Method of and apparatus for determining time origin of timer for modem |
| 09/22/1987 | US4696015 Echo correction especially for television broadcast systems |
| 09/22/1987 | US4695998 Method and circuit arrangement for the compensation of echo signals |
| 09/22/1987 | US4695969 Equalizer with improved performance |
| 09/22/1987 | US4695919 Circuit arrangement for protection against surge voltages for a repeater |
| 09/16/1987 | EP0236627A2 Duplex microphone communication system |
| 09/15/1987 | US4694468 Apparatus useful in channel equalization adjustment |
| 09/15/1987 | US4694451 Adaptive digital filter |
| 09/15/1987 | US4694450 Method and apparatus for adaptive receiver squelch echo control |
| 09/15/1987 | US4694415 Adaptive digital filter for analog input signals |
| 09/15/1987 | US4694298 Adaptive, fault-tolerant narrowband filterbank |
| 09/15/1987 | CA1226949A1 Data transmission system |
| 09/15/1987 | CA1226919A1 Receiving circuit for a data transmission system |
| 09/15/1987 | CA1226914A1 Modem for pseudo noise communication on a.c. lines |
| 09/15/1987 | CA1226897A1 Current supply for series-fed electronic circuits |
| 09/11/1987 | WO1987005456A1 Device for improving the side-tone attenuation or loop amplification in interphone systems |
| 09/10/1987 | DE3706540A1 Device for improving the return loss or loop gain in intercom devices |
| 09/09/1987 | EP0235765A1 Device for improving the side-tone attenuation or the loop amplification in duplex telephone intercommunication devices |
| 09/08/1987 | US4692761 Adaptive communication network and method |
| 09/02/1987 | CN86108615A Long-distance elecommunication cable pressure signal generator |
| 09/01/1987 | US4691349 Duplex microphone communication system |
| 09/01/1987 | US4691328 On-line serial communication interface from a computer to a current loop |
| 09/01/1987 | CA1226346A1 Methods of and circuit arrangements for compensating cross-talk and/or echo signals |
| 08/26/1987 | EP0233735A1 Communication system |
| 08/26/1987 | EP0125723B1 Carrier frequency equalizing apparatus controlled by base-band signals |
| 08/25/1987 | US4689826 Optical communication of video and audio with cross-talk suppression |
| 08/25/1987 | US4689805 Method of and a device for correcting signal distortion caused by a cable |
| 08/25/1987 | US4689620 Method and apparatus for data transmission between a transmission and a receiver disposed in a drill hole and a transmitter and a receiver disposed above ground |
| 08/25/1987 | US4689605 Powering device for transmitters and receivers of a signal transmission system |
| 08/25/1987 | CA1226050A2 Electrical appliance control |
| 08/20/1987 | DE3605325A1 Method and arrangement for avoiding or limiting the increase of the coefficients of a transverse filter in an echo compensator when a periodic signal is received |
| 08/18/1987 | US4688245 Method and circuit arrangement for compensating cross-talk and/or echo signals |
| 08/18/1987 | CA1225711A1 Method and apparatus for the compensation of echo signals |
| 08/18/1987 | CA1225704A1 Dynamic digital equalizer |
| 08/12/1987 | EP0231959A1 Arrangement for full-duplex data transmission over two-wire circuits |
| 08/12/1987 | EP0231854A1 Echo compensator |
| 08/12/1987 | EP0231487A2 Car radio with nonrecursive digital filter-shaped equalizer |
| 08/12/1987 | EP0231457A1 Method for data transmission through an electrical system for implementation of the method |
| 08/12/1987 | EP0231413A1 Circuit for the junction of lines in local networks |
| 08/11/1987 | US4686703 System for bidirectional digital transmission with echo cancellation |
| 08/11/1987 | US4686686 Line equalizer operable in response to an input signal of a variable data rate |
| 08/11/1987 | US4686668 Loopback of a PCM signal with loopback command signal bits placed in each frame of the signal as predetermined ones of overhead bits |
| 08/11/1987 | US4686641 Static programmable powerline carrier channel test structure and method |
| 08/11/1987 | US4686382 Switch bypass circuit for power line communication systems |
| 08/05/1987 | EP0230458A1 Patient identification and verification system and method |
| 08/04/1987 | CA1225130A1 Method and apparatus for cancelling echo |
| 08/04/1987 | CA1225124A1 Adaptive line hybrids |
| 07/30/1987 | EP0152423A4 Maintenance response signalling arrangement for a digital transmission system. |
| 07/30/1987 | DE3542655C1 Amplitude response equaliser |
| 07/29/1987 | EP0118522B1 Process for maintaining in service coaxial multichannel installations by a transmission network which is remotely supplied and comprised of symmetric cables, and transmission chain for implementing such process |
| 07/28/1987 | CA1224849A1 Communication receiving unit for the suppression of noise and interference signals |
| 07/23/1987 | EP0151616A4 Control signalling arrangement for a digital transmission system. |
| 07/22/1987 | EP0229524A1 Duplex frequency division multiplex modem system with echo cancellation |
| 07/22/1987 | EP0229505A1 A method of measuring a cable delay time |
| 07/22/1987 | EP0229133A1 Cable car with data transmission by cable |
| 07/21/1987 | US4682358 Echo canceller |
| 07/21/1987 | US4682325 System for selectively coupling a plurality of stations into a single communications path |
| 07/15/1987 | EP0228771A2 Data transmission system |
| 07/15/1987 | EP0228534A2 Electrical apparatus for increasing digital data density by signal processing |
| 07/14/1987 | CA1224254A1 Adaptive digital filter echo eliminator for transmission systems |
| 07/07/1987 | US4679250 Optical repeaters |
| 07/07/1987 | US4679230 Echo canceller and center clipper control arrangement |
| 07/07/1987 | US4679227 Ensemble modem structure for imperfect transmission media |
| 07/07/1987 | US4679208 Equalization system tuning device which updates equalizer coefficients based on selected decision regions |
| 07/07/1987 | US4679115 Electrical disturbance protective device between a terminal and a telephone line |
| 07/07/1987 | CA1223933A1 Transmission line control system |
| 07/02/1987 | DE3545404A1 Circuit arrangement for a frequency blocking device (polyphase block) |
| 06/30/1987 | US4677668 Echo canceller using parametric methods |
| 06/30/1987 | US4677666 Adaptive line hybrids |
| 06/30/1987 | US4677646 Dataset powered by control and data signals from data terminal |
| 06/24/1987 | EP0226322A2 Proximity detector |
| 06/23/1987 | US4675668 Data transmission system over building wiring |
| 06/23/1987 | US4675648 Passive signal coupler between power distribution systems for the transmission of data signals over the power lines |
| 06/23/1987 | US4675616 Second order all pass network |
| 06/16/1987 | US4674103 Method and arrangement for detecting the presence of a training signal in a modem receiver |
| 06/16/1987 | US4674002 Directional comparison blocking system |
| 06/16/1987 | US4673127 Remote control means for heating/cooling devices |
| 06/16/1987 | EP0225652A2 Automatic retrain method for a full duplex modem having an echo canceller and an equalizer |
| 06/16/1987 | CA1223064A1 Doublet detector for data recording or transmission |
| 06/16/1987 | CA1223050A1 Equalizer networks and methods of developing scaling coefficients therefor |
| 06/16/1987 | CA1223048A1 Broadband control amplifier |
| 06/09/1987 | US4672665 Echo canceller |