Patents
Sitemap › H04 - Electric communication technique › H04L - Transmission of digital information, e.g. telegraphic communication › H04L 5 - Arrangements affording multiple use of the transmission path
Patents for H04L 5 - Arrangements affording multiple use of the transmission path (28,368)
06/1989
06/27/1989CA1256526A1 Adaptive hybrid circuits for crosstalk cancellation
06/21/1989EP0320856A1 Method of transmission for time-multiplexed-signals
06/20/1989US4841521 Method and system for bidirectionally transmitting data
06/06/1989US4837778 Circuit arrangement for time-regeneration of broadband digital signals
06/06/1989CA1255369A1 Two wire bidirectional digital transmission system
06/01/1989WO1989005074A1 Method and system for data communication
05/1989
05/31/1989EP0318354A1 Vehicle data transmission device and method for using said device
05/31/1989EP0187778B1 Adaptive hybrid circuit
05/30/1989US4835765 Arrangement for full-duplex data transmission over two-wire circuits
05/30/1989US4835764 Two-wire time-division multiplex method of full duplex transmission between a central station and a substation
05/24/1989EP0316941A2 PSK modulation with an error correction memory
05/24/1989EP0316773A2 Method for synchronizing a digital communication system
05/23/1989US4833706 Ensemble modem structure for imperfect transmission media
05/23/1989US4833696 System for controlling operation mode of modulator/demodulator
05/23/1989US4833672 Multiplex system
05/23/1989US4833668 Fault detection in a full duplex optical communications system
05/23/1989CA1254681A1 Time division multiple access radio communication system
05/16/1989US4831662 Fiber optic data transmitting system
05/16/1989CA1254314A1 Telephone system and method for transmitting digital information
05/10/1989EP0072857B1 Data communication system
05/10/1989CN1032891A Method of transmitting optical signal in both directions through light guide
05/03/1989EP0314236A2 Method and circuit for information transmission
05/03/1989EP0313738A2 Method for bidirectionnally transmitting optical signals over optical fibres
05/02/1989US4827256 Sound transmission method for data way system
04/1989
04/26/1989EP0312911A2 Apparatus and method for master/slave synchronization
04/25/1989US4825113 Single transmission line bidirectional optical communication system
04/12/1989EP0311251A2 Apparatus and method for secure digital communication
04/11/1989US4821291 Improvements in or relating to signal communication systems
04/11/1989US4821289 Multiple parallel channel equalization architecture
04/05/1989EP0195045B1 Bidirectional repeater apparatus
03/1989
03/29/1989EP0308449A1 Transfer of messages in a multiplexed system.
03/28/1989US4817089 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels
03/23/1989WO1989002683A1 A method of demultiplex processing of information and equipment for performing the method
03/21/1989US4815099 Data circuit-terminating equipment
03/21/1989CA1251586A1 Ensemble modem structure for imperfect transmission media
03/21/1989CA1251534A1 Hand-held communication device and system employing such devices
03/07/1989US4811195 Electronic control system with improved communications
03/07/1989US4811021 Dual polarization transmission system
03/07/1989CA1250898A1 Radio frequency modem and method
02/1989
02/28/1989CA1250673A1 Subscriber rf telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of rf channels
02/22/1989EP0304023A2 Bit oriented communications network
02/21/1989US4807258 Method for synchronizing a digital communication system
02/15/1989CN2032778U Single chip microcomputer distribution control type time-division multiplex device
02/14/1989US4805196 Line delay compensation for digital transmission systems utilizing low power line drivers
02/07/1989CA1249886A1 Method of duplex data transmission using a send-and- wait protocol
02/01/1989EP0301636A1 Transceiver arrangement for full-duplex data transmission comprising an echo canceller and povision for testing the arrangement
01/1989
01/17/1989US4799214 Two-wire full duplex frequency division multiplex modem system having echo cancellation means
01/10/1989US4797904 Transmitter for ISDN S-bus interface circuit
01/10/1989US4797582 Bidirectional interface circuit having a unipolar port and a bipolar port for logic signals
01/10/1989CA1248647A1 Fiber optic multiplexer
01/10/1989CA1248602A1 Distributed time division multiplexing bus
01/03/1989US4796256 (MPRT) Mini packet receiver transmitter
01/03/1989US4796255 Method of synchronization between data communication devices permitting peer-peer and master-slave communications
01/03/1989US4796028 Apparatus for bidirectional data transmission
12/1988
12/28/1988EP0296175A1 Method and installation for digital communication, particularly between and toward moving vehicles.
12/27/1988US4794620 Radio frequency modem and method
12/21/1988EP0295857A1 Optical multiplexing
12/21/1988EP0295620A2 Dual polarization transmission system
12/20/1988US4792940 Automatic retrain method for a full duplex modem having an echo canceller and an equalizer
12/15/1988WO1988010037A1 Optical multiplexing
12/14/1988CN88103100A High speed half duplex modem with fast turnaround protocol
12/13/1988US4791652 Synchronization of asynchronous data signals
12/06/1988CA1246251A1 Hierarchical data transmission system
12/06/1988CA1246178A1 Inductive coupling system for the bi-directional transmission of digital data
12/06/1988CA1246174A1 Digital transmission system
11/1988
11/30/1988EP0293096A2 Asynchronous-to-synchronous digital data multiplexer/demultiplexer with asynchronous clock regeneration
11/30/1988EP0292691A2 Fast turnaround protocol for use with a high speed half duplex modem
11/30/1988EP0292686A2 Line delay compensation arrangement for digital transmission systems utilizing low-power line drivers
11/29/1988US4788541 Signal communication system
11/15/1988US4785445 An echo canceler associated with a data transmission modem
11/15/1988CA1244947A1 Control system
11/09/1988EP0289526A1 Adaptive threshold sampling method.
11/08/1988CA1244540A1 Digital switching system
11/01/1988CA1244155A1 Distributed bus control communication protocol
10/1988
10/26/1988EP0287743A1 Echo cancelling device with phase-roll correction
10/26/1988EP0287742A1 Echo cancelling device for data transmission over two-wire line
10/25/1988CA1243787A1 Variable bandwidth switching system
10/25/1988CA1243739A1 Local area networks
10/19/1988EP0287119A2 Serial data processor capable of transferring data at a high speed
10/18/1988US4779264 Multiplex system including shielded cable
10/05/1988EP0285413A2 Sample rate converter
10/05/1988EP0167539B1 Converter/line driver circuit for a line repeater
10/04/1988CA1242819A1 Integrated voice/data/control switching system
09/1988
09/28/1988CN88101112A Determination method and device for data transmission speed
09/22/1988WO1988007293A1 Transfer of messages in a multiplexed system
09/20/1988US4773040 Data transmission method and apparatus therefor
09/14/1988EP0281738A2 Multicarrier demodulation method
09/14/1988EP0281566A1 Method of data communication by radio and arrangement therefor
09/13/1988US4771438 Method and apparatus for phase reference recovery in high speed fast turnaround modem
09/13/1988US4771417 High speed modem
09/07/1988EP0281416A2 Electronic control of communication system
09/07/1988EP0281307A2 Asynchronous interface and method for coupling data between a data module and a serial asynchronous peripheral
09/07/1988EP0281010A2 Apparatus for the transmission of data signals via a TDM transmission line
08/1988
08/30/1988US4768191 Digital data and orderwire combiner apparatus
08/30/1988US4768187 In a radio communication system
08/30/1988US4768030 Switch interface method and apparatus
08/30/1988CA1241378A1 Multi-speed, full duplex modem
08/23/1988US4766606 Signal repeater for multi subscriber communication over single pair telephone line
08/23/1988CA1241084A1 Bidirectional bus arrangement for a digital communication system
08/17/1988EP0278192A1 Method for digitally broadcasting in television channels
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