| Patents for H04B 3 - Line transmission systems (31,523) |
|---|
| 09/16/1986 | CA1211526A1 Method of reducing the convergence time of an echo canceller and apparatus for carrying out said method |
| 09/16/1986 | CA1211525A1 Method of initializing filter coefficients in an arrangement comprising a near echo and a distant echo canceller and an apparatus for carrying out said method |
| 09/16/1986 | CA1211524A1 Receiver for a data transmission modem, comprising an echo canceller and an equalizer |
| 09/16/1986 | CA1211523A1 Echo canceller for a baseband data signal |
| 09/16/1986 | CA1211516A1 Self-adaptive equalizer for baseband data signals |
| 09/16/1986 | CA1211515A1 Combined adaptive equalization and demodulation circuit |
| 09/16/1986 | CA1211514A1 Automatic adaptive equalizer having improved reset function |
| 09/10/1986 | EP0193835A1 Apparatus for collecting monitoring information in transmission systems |
| 09/10/1986 | EP0193733A2 Method for matching a hybrid amplifier circuit to a telecommunication line, and device for carrying it out |
| 09/10/1986 | CN86100444A Multi-stage echo canceller |
| 09/10/1986 | CN85107938A 9600 multidrop modem communication system |
| 09/09/1986 | US4611274 Data transmission system via power supply line |
| 09/09/1986 | US4611101 Method and apparatus for testing communication systems |
| 09/09/1986 | US4611099 Cable analyzer with D. C. functions |
| 09/03/1986 | EP0193049A2 Level control method for signal information |
| 09/03/1986 | CN85203407U Answer-back impulse track circuit |
| 09/02/1986 | US4609839 Noise inverter circuit for a power line communication system |
| 09/02/1986 | US4609788 Digital voice transmission having improved echo suppression |
| 09/02/1986 | US4609787 Echo canceller with extended frequency range |
| 09/02/1986 | US4609781 BORSHT/SLIC auto balancing technique |
| 08/27/1986 | EP0192411A2 Adaptive equalizer |
| 08/27/1986 | EP0192359A1 Noise cancellation |
| 08/27/1986 | EP0192061A1 Device for automatic gain control in a TDMA receiver |
| 08/27/1986 | EP0191784A1 Optical receiver circuit. |
| 08/27/1986 | CN85107246A Multiplex communication system |
| 08/26/1986 | US4608701 Communication receiving unit for the suppression of noise and interference signals |
| 08/26/1986 | US4608552 Process and device for the remote transmission of signals and application to the detection and/or measurement of the quanity of combustible gas in an atmosphere |
| 08/26/1986 | US4608464 Interface circuit interconnecting a bidirectional two-wire line with unidirectional four-wire lines |
| 08/26/1986 | CA1210471A1 Echo canceller |
| 08/20/1986 | EP0191459A2 Waveform shaping circuit |
| 08/20/1986 | EP0191078A1 Method and apparatus for configurable line testing |
| 08/20/1986 | EP0191077A1 Method and apparatus for testing communication systems |
| 08/19/1986 | US4607247 On-line serial communication interface from a transmitter to a current loop |
| 08/19/1986 | US4607231 Variable switched-capacitor filter capable of changing the filter characteristic thereof |
| 08/19/1986 | US4607146 Circuit arrangement for controlling the transmission capacity of the receiving branch of a transmission system |
| 08/19/1986 | CA1210096A1 Equalizer modifying a phase of a gain control signal to carry out equalization |
| 08/19/1986 | CA1210083A1 Adaptive equalizer for digital signals affected by distortions with time varying characteristics |
| 08/14/1986 | WO1986004742A1 Wall coating enabling the supply of an electric receiver with variable positions on the wall |
| 08/13/1986 | CN86101560A Adaptive equalizer |
| 08/13/1986 | CN86100810A 波形成型电路 Waveform shaping circuit |
| 08/12/1986 | US4606043 Programmable automatic cable equalizer |
| 08/12/1986 | US4605826 Echo canceler with cascaded filter structure |
| 08/12/1986 | US4605822 Active equalization circuit |
| 08/06/1986 | EP0096048B1 Echo canceller |
| 08/05/1986 | US4604741 Voice and data interface circuit |
| 07/30/1986 | EP0189347A2 Second order all pass network |
| 07/30/1986 | CN85109644A Receiver apparatus for three-phase power line carrier communications |
| 07/30/1986 | CN85109560A 数字传输系统 Digital transmission system |
| 07/29/1986 | CA1208734A1 Method and an apparatus for measuring distant echo delay in an echo cancelling arrangement |
| 07/29/1986 | CA1208733A1 Initialization device for echo cancelling device and application thereof to remote echos |
| 07/29/1986 | CA1208716A1 Auto-adaptive amplitude-equalizing arrangement for digital radio links |
| 07/29/1986 | CA1208714A1 Rf hybrid |
| 07/29/1986 | CA1208703A1 Mse variable step adaptive filter |
| 07/23/1986 | EP0188223A1 Delay equalizer |
| 07/22/1986 | US4602240 Apparatus for and method of attenuating power line carrier communication signals passing between substation distribution lines and transmission lines through substation transformers |
| 07/22/1986 | US4602133 Adaptive echo cancelling system and method utilizing linear code spacing |
| 07/17/1986 | WO1986004195A1 System for selectively coupling a plurality of data stations into a single communications path |
| 07/16/1986 | EP0187339A2 Low power line driving digital transmission system |
| 07/16/1986 | CN85109009A Power line communications terminal and interface circuit associated therewith |
| 07/15/1986 | US4600815 Automatic gain control for echo cancellers and similar adaptive systems |
| 07/15/1986 | CA1207928A1 Speakerphone control circuit |
| 07/15/1986 | CA1207839A1 Status monitor |
| 07/09/1986 | EP0186806A1 Lossy and adjustable delay equalizer having at least one fixed delay point |
| 07/08/1986 | US4599598 Data transmission system utilizing power line |
| 07/03/1986 | WO1986003912A1 Full duplex speakerphone for radio and landline telephones |
| 07/02/1986 | EP0186073A2 Driver circuit |
| 07/02/1986 | CA1207029A Radio communication systems for underground mines |
| 07/01/1986 | US4598396 Duplex transmission mechanism for digital telephones |
| 07/01/1986 | US4598325 Apparatus for transmitting digital signals across a rotary gap |
| 07/01/1986 | US4598212 Driver circuit |
| 07/01/1986 | US4598172 Telecommunication terminal |
| 06/24/1986 | US4597082 Transceiver for multi-drop local area networks |
| 06/24/1986 | CA1206647A1 Telecommunication terminal |
| 06/24/1986 | CA1206595A1 Apparatus for color channel signal-to-noise improvement in digital television |
| 06/24/1986 | CA1206526A1 Current probe signal processing circuit |
| 06/18/1986 | EP0184805A2 Demodulator |
| 06/17/1986 | US4596011 Data transmission system for a local network |
| 06/17/1986 | US4595802 Hybrid circuit |
| 06/11/1986 | EP0137806A4 Speakerphone control circuit. |
| 06/11/1986 | EP0129542A4 Cmos circuit using transmission line interconnections. |
| 06/10/1986 | US4594725 Combined adaptive equalization and demodulation circuit |
| 06/10/1986 | US4594570 Elevator control |
| 06/10/1986 | US4594479 Fast start-up of adaptive echo canceler or echo measurement device |
| 06/10/1986 | CN85109557A 解调器 Demodulator |
| 06/10/1986 | CA1205876A1 Fir-type balance filter incorporated in the transmitter-receiver unit in a telecommunication system |
| 06/04/1986 | EP0183389A1 Adaptive recognising device |
| 06/03/1986 | US4593161 Method of initializing a filter in an echo canceller and communication system using said method |
| 05/28/1986 | EP0182096A2 Method and apparatus for improved control and time sharing of an echo canceller |
| 05/27/1986 | US4592068 Repeater for a digital transmission system |
| 05/27/1986 | US4591939 Waveform equivalent circuit |
| 05/27/1986 | US4591855 Apparatus for controlling a plurality of current sources |
| 05/27/1986 | US4591813 Hybrid junction having three conductive lines coaxially disposed |
| 05/27/1986 | US4591670 Echo canceller and echo suppressor for frequency divisional attenuation of acoustic echoes |
| 05/27/1986 | US4591669 Adaptive filter update gain normalization |
| 05/27/1986 | CA1205136A1 Cable load status detector |
| 05/20/1986 | US4590600 Dynamic digital equalizer |
| 05/20/1986 | US4590336 Special circuit transfer via cable analyzer |
| 05/20/1986 | US4590334 Supply circuit included in a DC-magnetized hybrid transformer |
| 05/20/1986 | CA1204829A1 Delay equalizers |
| 05/14/1986 | EP0181169A1 Monitoring system for use with elongate heater units |