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)
01/1991
01/22/1991US4987572 Apparatus and associated methods for converting asynchronous nonhomogeneous variable width parallel data to a format suitable for transmission over synchronous high speed serial transmission media
01/16/1991EP0407903A2 TDM information transmission system with a synchronising circuit at the receiver responding the coding of words inserted in the transmitted information
01/10/1991WO1991000662A1 Communication system
01/09/1991EP0407031A2 Apparatus for transmitting digital data in analog form
01/02/1991EP0406077A1 Complementary connectionless communication system for asynchronous time network
01/02/1991EP0405743A2 Bidirectional transceiver for high speed data system
01/02/1991EP0405074A2 Hand-held bar code scanner
01/02/1991EP0404994A1 Circuit arrangement for local traffic between ISDN-terminals
01/02/1991CN2068736U Passive numeric coding transmitter connected by double lead wire
12/1990
12/27/1990CA1278351C Bidirectional analogue channel data transmission terminal with an echo canceller coupled to the receiving circuit
12/26/1990CN1011017B Method for transmitting optical signal in both directions through light guide
12/26/1990CN1011014B Communication channel transceiver
12/25/1990US4980897 Multi-channel trellis encoder/decoder
12/18/1990US4979170 Alternating sequential half duplex communication system
12/12/1990CN1047774A Apparatus for processing signalling messages in asynchronous time division telecommunications network
12/11/1990CA1277715C Radio broadcast communications systems
12/05/1990EP0400824A2 Bidirectional communication line buffer apparatus
12/04/1990US4975908 Basic pulse frame and method for a digital signal multiplex hierarchy
11/1990
11/28/1990EP0399612A2 Data transmission over a time division duplex channel
11/28/1990EP0247189A4 Method and apparatus for encoding and transmitting signals
11/20/1990US4972432 Multiplexed synchronous/asynchronous data bus
11/20/1990US4972106 Binary-to-ternary converter for combining two binary signals
11/15/1990WO1990013956A1 Distributed intelligence network using time and frequency multiplexing
11/13/1990US4970506 Method and apparatus for controlling the start of data transmission
11/13/1990CA1276236C Fault direction in an optical communications system
11/07/1990CN1046823A Digital radio communication system and two-way radio
11/06/1990US4969162 Polled data network auto-equalizer system and method
11/06/1990US4969145 Modem
10/1990
10/28/1990WO1990013212A1 Digital radio communication system and two way-radio
10/24/1990EP0221975B1 Television set with receiver devices for the processing of videotext and/or screen text signals
10/18/1990WO1990011675A2 Mixed modulation level communication system
10/18/1990DE3912497A1 Gleichzeitige energie- und datenrueckuebertragung ueber lose transformatorische kupplung Simultaneous energy and datenrueckuebertragung about loose coupling transformer
10/17/1990EP0391947A1 An interface for use between two communication units
10/17/1990CN2064137U Group combined device
10/16/1990US4964141 Serial data processor capable of transferring data at a high speed
10/09/1990USRE33380 Voiceband data set
10/03/1990EP0390015A1 Device for processing signalling messages in a communication network using an asynchronous time technique
10/03/1990CN1009893B Method and device for determination of data transmission speed
10/02/1990US4961189 Multiplexing system setting through mask registers
10/02/1990CA1274928A1 Method and system for bidirectionally transmitting data
09/1990
09/26/1990EP0389349A1 Method and terminal for establishing communications via channels selected in a multiplex link
09/26/1990EP0389165A2 Fiber optic data link system
09/25/1990US4959844 Clock recovery circuit for digital demodulator
09/25/1990CA1274630A2 Subscriber unit for wireless digital telephone system
09/25/1990CA1274594A1 Arrangement for full-duplex data transmission over two-wire circuits
09/19/1990EP0388051A2 Technique for converting either way between a plurality of N synchronized serial bit streams and a parallel TDM format
09/18/1990US4958344 System for transmitting and receiving asynchronous nonhomogeneous variable width parallel data over a synchronous high speed serial transmission media
09/12/1990EP0386877A1 Telecommunications system
09/11/1990US4956851 Modem with remote speed-change capability
09/11/1990US4956645 Radio system for data transmission with one passive end and station included in such a system
09/04/1990CA1273692A1 Terminator for a cmos transceiver device
08/1990
08/28/1990US4953210 Feature negotiation protocol for a synchronous modem
08/23/1990WO1990009632A1 Process for operating a multicomputer system characterized by reliable signal quality
08/22/1990EP0383447A1 Telecommunications system
08/21/1990CA1273065A1 Dual polarization transmission system
08/16/1990EP0382669A2 Method of operating a full-duplex conversation in a communication network
08/16/1990EP0382211A2 Communication terminal connection system
08/14/1990US4949335 A TDM quasi-duplex system
08/14/1990CA1272817A2 Subscriber unit for wireless digital telephone system
08/11/1990WO1990009712A1 Network system for data transmission
08/11/1990CA2046297A1 Network system for data transmission
08/09/1990WO1990009065A1 Multiplexed synchronous/asynchronous data bus
08/09/1990WO1990009062A1 Transceiver with serial control port
08/08/1990EP0381565A1 Method of transmitting commands or information, and device for carrying out the method
08/08/1990EP0380530A1 A method of demultiplex processing of information and equipment for performing the method
08/08/1990CN1044559A Telecommunications system
08/08/1990CN1044558A Telecommunication system
08/08/1990CN1044557A Telecommunications system
08/01/1990EP0380372A1 Telecommunications system
08/01/1990EP0380188A2 Multiplex system
08/01/1990CA2008947A1 Method for the transmission of data or commands and device for carrying out said method
07/1990
07/31/1990CA1272316B Subscriber unit for wireless digital telephone system
07/28/1990WO1990009073A1 Telecommunications system
07/28/1990WO1990009072A1 Telecommunications system
07/28/1990WO1990009071A1 Telecommunications system
07/26/1990WO1990008436A1 Spectrally efficient tdm duplex communication system
07/26/1990WO1990008435A1 A tdm quasi-duplex system
07/25/1990CN1044196A Method for unblocking multibus multiprocessor system
07/25/1990CN1008962B Subscriber rf telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of rf channels
07/24/1990US4943942 Full-duplex modem using a single processor
07/11/1990EP0377380A1 Apparatus for the transmission of asynchronous data over an infra-red channel
07/11/1990EP0377204A1 System for the transmission of HDLC frames on a PCM channel using a single HDLC circuit, and transposition buffer memory
07/11/1990EP0377203A1 Reception and processing system for HDLC frames transmitted on PCM-TDM multipaths, especially for a data switcher
07/10/1990CA1271536A1 Communication channel transceiver
07/04/1990EP0376842A2 Control system for duplex communications channels
07/04/1990EP0376249A1 Deblocking method for a multiprocessor multibus system
07/03/1990US4939748 Unobtrusive signature for modulated signals
06/1990
06/28/1990DE3842371A1 Device for clock synchronisation of cell-structured digital signals
06/27/1990EP0375361A2 Duplex communications method and system
06/27/1990CN1008585B Pcm coder monitoring method and equipment
06/26/1990US4937839 Frequency multiplexed full duplex 4800 bps modem
06/26/1990US4937586 Radio broadcast communication systems with multiple loop antennas
06/19/1990US4935919 Full duplex modem having two echo cancellers for a near end echo and a far end echo
06/14/1990WO1990006637A1 Adaptive rate control for echo cancelling modem
06/13/1990EP0235157B1 Optical communication apparatus for a vehicle
06/05/1990US4932025 Method of information transfer as well as an arrangement for implementing the method
06/02/1990CA2004476A1 Adaptive rate control for echo cancelling modem
05/1990
05/30/1990EP0370862A1 Method and system for signal transmission
05/30/1990CN1042634A Frequency independent information transmission system
05/29/1990US4929941 Device for transmitting items of information for an automobile vehicle and a method of using said device
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