| Patents for H04B 3 - Line transmission systems (31,523) |
|---|
| 05/02/1985 | EP0138819A1 Status monitor |
| 04/30/1985 | US4514719 Data transmission system utilizing power line of 3-phase alternating current |
| 04/30/1985 | US4514645 Power supply system for automotive parts having a rotary component |
| 04/30/1985 | US4514594 Power line carrier telephone extension system for full duplex conferencing between telephones and having telephone call hold capability |
| 04/25/1985 | EP0121557A4 Adaptive filter including controlled tap gain coefficient drift. |
| 04/24/1985 | EP0138108A2 Method of detecting a minimum speech level in a given speech direction at a bidirectional amplifier circuit connected in a telecommunication line, and device for performing the method |
| 04/24/1985 | EP0137806A1 Speakerphone control circuit. |
| 04/23/1985 | CA1186083A1 Subscriber line circuit comprising a controllable dc/dc converter as a battery feed circuit |
| 04/23/1985 | CA1186029A1 Automatic correction circuit for received digitally encoded signals |
| 04/23/1985 | CA1186026A1 Equalizer having a substantially constant gain at a preselected frequency |
| 04/23/1985 | CA1186019A1 Method and apparatus for remote indication of faults in coaxial cable r-f transmission systems |
| 04/23/1985 | CA1186016A1 Surge protection for signal transmission systems |
| 04/17/1985 | EP0137508A1 Method of and device for the digital cancellation of the echo generated in connections with time-varying characteristics |
| 04/17/1985 | EP0137344A2 Single cable optical fibre signaling system |
| 04/17/1985 | EP0137213A2 Adaptive equalizer for digital signals affected by distorsions with time varying characteristics |
| 04/16/1985 | CA1185650A1 Overhead electric transmission systems |
| 04/09/1985 | US4510611 Transceiver circuit for interfacing between a power line communication system and a data processor |
| 04/09/1985 | US4510536 Signal conditioning method and apparatus for FM code signal |
| 04/09/1985 | CA1185334A1 Equalizer arrangement for mixed-gauge cables |
| 04/03/1985 | EP0135843A2 Echo canceller systems |
| 04/03/1985 | EP0135512A1 Improved method and means of determining coefficients for linear predictive coding. |
| 04/03/1985 | EP0054024B1 Subscriber line audio processing circuit apparatus |
| 04/02/1985 | US4509198 Satellite broadcast signal receiving system |
| 04/02/1985 | US4509090 Coaxial lightning arresting structure |
| 04/02/1985 | US4508946 Microwave oven with rotary antenna |
| 03/27/1985 | EP0135241A2 A hybrid junction |
| 03/26/1985 | US4507747 Procedure for shared-time processing of digital signals and application to a multiplexed self-adapting echo canceler |
| 03/26/1985 | US4507646 Radio communication system |
| 03/26/1985 | US4507568 Device for initiating the remote feed of electrical users |
| 03/26/1985 | US4507524 Loudspeaker telephone system |
| 03/26/1985 | CA1184684A1 High speed dial-up telephone circuit full duplex data transmission techniques |
| 03/20/1985 | EP0134229A1 Borsht/slic auto balancing technique. |
| 03/19/1985 | US4506332 Facility for monitoring the level of a radio-frequency signal |
| 03/19/1985 | US4506237 Adjustable slope equalizer |
| 03/13/1985 | EP0133872A2 Time-discrete variable equalizer |
| 03/13/1985 | EP0040217B1 Apparatus for and method of processing data signals |
| 03/12/1985 | US4504705 Receiving arrangements for audio frequency signals |
| 03/12/1985 | US4504702 Additional line coupling circuit to an intercom telephone set |
| 03/06/1985 | EP0133760A2 Transmission line control system |
| 03/06/1985 | EP0133728A2 Data transmission system |
| 03/05/1985 | US4503547 Electrical data pulse processing |
| 02/28/1985 | WO1985000946A1 Maintenance response signalling arrangement for a digital transmission system |
| 02/28/1985 | WO1985000945A1 Control signalling arrangement for a digital transmission system |
| 02/28/1985 | EP0118522A4 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. |
| 02/26/1985 | US4502077 Ghost canceling apparatus |
| 02/26/1985 | US4502076 Selective efficiency videofrequency non-linearity correction device |
| 02/26/1985 | CA1183226A1 Apparatus for the contactless transmission of data or the like between two relatively rotating parts |
| 02/20/1985 | EP0133298A1 Method and circuit for compensating echo signals |
| 02/19/1985 | US4500999 Line equalizer |
| 02/19/1985 | CA1182935A1 Data transmission over long distance circuits |
| 02/13/1985 | EP0132933A2 Adaptive line hybrids |
| 02/13/1985 | EP0132453A1 Method and apparatus for minimizing errors during the digital processing of electric signals |
| 02/12/1985 | US4499600 Supervision of transmission systems |
| 02/12/1985 | US4499430 Automatic level control circuit |
| 02/12/1985 | CA1182526A1 Modem circuitry |
| 02/06/1985 | EP0037827B1 Receiver for complex data signals |
| 01/30/1985 | EP0132272A1 Telecommunication terminal. |
| 01/29/1985 | CA1181817A1 Intermediate frequency slope compensation control arrangements |
| 01/22/1985 | US4495386 Telephone extension system utilizing power line carrier signals |
| 01/22/1985 | CA1181493A1 Switched-capacitor variable equalizer |
| 01/15/1985 | US4494082 Switched-capacitor variable equalizer |
| 01/15/1985 | US4493951 Device for use in testing a modem coupled to a telephone line by modular connectors |
| 01/15/1985 | CA1181150A1 Arrangement for correcting pulse distortion in homochronous data transmission |
| 01/15/1985 | CA1181149A1 Echo canceller for telephone transmission over digital paths utilizing a pseudo-logarithmic encoding law |
| 01/15/1985 | CA1181148A1 Digital echo canceller |
| 01/15/1985 | CA1181147A1 Arrangement for cancelling a composite echo signal |
| 01/15/1985 | CA1181146A1 Echo canceller for a variable phase echo signal |
| 01/09/1985 | EP0130730A1 Interconnection apparatus |
| 01/09/1985 | EP0130664A1 Signal cuber |
| 01/09/1985 | EP0130263A1 Starting-up method for an echo canceller filter, and communication system using this method |
| 01/09/1985 | EP0130240A2 Circuit arrangement for transmitting analogous low-frequency signals |
| 01/08/1985 | US4493101 Anti-howl back device |
| 01/02/1985 | EP0130164A2 Apparatus for adapting the noise immunity of a tone selective receiver |
| 01/02/1985 | EP0129542A1 Cmos circuit using transmission line interconnections |
| 01/02/1985 | CA1180434A Hiline interference elimination apparatus |
| 01/02/1985 | CA1180409A Condition sensor interface means |
| 01/02/1985 | CA1180387A Test system for locating breaks and short circuits in a two-lead line |
| 01/01/1985 | US4491968 For use in a coaxial cable network |
| 01/01/1985 | US4491785 Tracing electrical conductors by high-frequency loading and improved signal detection |
| 01/01/1985 | US4491701 Adaptive filter including a far end energy discriminator |
| 01/01/1985 | US4491700 Hybrid circuit in a telephone subscriber interface circuit |
| 12/27/1984 | EP0129175A2 Equalizer modifying a phase of a gain control signal to carry out equalization |
| 12/27/1984 | CA1180141A Echo canceller system |
| 12/27/1984 | CA1180086A Maintenance termination unit |
| 12/27/1984 | CA1180070A Adaptive filter |
| 12/25/1984 | US4490843 Dynamic equalizing |
| 12/25/1984 | US4490693 I.F. Delay equalizer for a UHF tv transmitter |
| 12/25/1984 | US4490692 Reverse equalization network |
| 12/25/1984 | US4490582 Speakerphone control circuit |
| 12/25/1984 | US4490580 Subscriber line circuit comprising a controllable DC/DC converter as a battery feed circuit |
| 12/19/1984 | EP0128631A2 Circuit comprising an amplifier and an electronic switch |
| 12/19/1984 | EP0128416A2 Arrangement for the switchable transmission of audio signals |
| 12/19/1984 | EP0128287A2 Analog adaptive magnitude equalizer |
| 12/18/1984 | US4489360 Circuit for automatically closing a backup remote feed loop |
| 12/18/1984 | US4489222 Telephone line interface |
| 12/11/1984 | US4488126 Equalizer arrangement for mixed-gauge cables |
| 12/06/1984 | WO1984004858A1 Echo suppressor with adaptive digital filter for transmission system |
| 12/05/1984 | EP0127544A1 Echo canceller with an adaptive digital filter for a transmission system |
| 12/04/1984 | US4486627 For testing a transmission line |
| 12/04/1984 | CA1179078A1 Active impedance line feed circuit |