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)
11/1981
11/17/1981US4301532 Arrangement for transmitting digital data signals
11/10/1981CA1112383A1 Echo cancellation in two-wire two-way data transmission systems
11/10/1981CA1112382A1 Communication circuit
11/03/1981US4298982 Fault-tolerant interface circuit for parallel digital bus
11/03/1981US4298979 Decoding TIM bus structure
10/1981
10/29/1981WO1981003095A1 Digital subscriber communication system
10/28/1981EP0038509A1 Logic circuit to avoid a latch-up condition between distant data buses
10/27/1981CA1111588A1 Frequency recognizing device for pcm telephone systems
10/07/1981EP0037107A2 Subscriber terminal for use in a time shared bidirectional digital communication network
09/1981
09/23/1981EP0036172A1 Multi-station processor intercommunication system comprising means for remote processor initialization
09/23/1981EP0036146A1 Mobile radio network
09/23/1981EP0035992A1 Data transmission arrangement.
09/16/1981EP0035790A2 Processor intercommunication system and method
09/16/1981EP0035789A2 Method and arrangement for loop initialization in a peer-to-peer serial loop communication system
09/15/1981US4290140 Combined coherent frequency and phase shift keying modulation system
09/15/1981CA1109133A1 Joint adaptive echo canceller and equalizer for two- wire full-duplex data transmission
09/09/1981EP0035061A1 Process and device for multiplexing a data signal and several secondary signals, associated demultiplexing process and device, and interface transmitter-receiver therefor
09/08/1981US4288869 Half-duplex/simplex digital signal converter
09/01/1981US4287589 Transmission-reception apparatus
09/01/1981US4287588 Multiple access, time-division multiplex, satellite communications system
09/01/1981US4287577 Interleaved TDMA terrestrial interface buffer
09/01/1981CA1108262A1 Dual speed full duplex data transmission
08/1981
08/19/1981EP0033844A1 Method for data transmission in great depths of water
08/18/1981US4284979 Coding system for simultaneously signaling selected ones of a plurality of devices
08/12/1981EP0033568A1 Echo canceller with simplified computing circuits
08/11/1981US4283789 Data transmission method and devices for practicing said method
08/05/1981EP0033122A1 Process and circuit arrangement for the transmission of data in a synchronous data network
08/05/1981EP0032992A1 Circuit for interfacing a half-duplex digital data line with a simplex transmitting and a simplex receiving line, and vice-versa
07/1981
07/14/1981US4279033 Bidirectional transmission circuit for interlocked signals
06/1981
06/30/1981US4276640 Noise tolerant multiplex system
06/23/1981CA1103805A1 System for the addition of supplementary information channels to multilevel digital transmission
06/16/1981US4273955 System for in-service quantitative performance analysis of data communications system
06/09/1981US4272758 Arrangement for providing a power supply and transmitting electrical signs between two devices using a small number of contacts
06/02/1981US4271514 Loopback test for data transmission paths
06/02/1981US4271513 Method and apparatus for carrying out loopback test
05/1981
05/26/1981US4270202 Modem with automatic port reconfiguration apparatus
05/19/1981CA1101491A1 Digital echo canceler for a modem for data transmission by means of modulation of a carrier
05/13/1981EP0028307A1 Circuitry for an analog comparator
04/1981
04/21/1981US4263673 Receive buffer for converting synchronous-to-asynchronous data
04/21/1981US4263668 Method and circuit arrangement for full duplex two-wire transmission of a ternary data signal
04/15/1981EP0027006A2 Decoding terrestrial interface modules bus structure
04/15/1981EP0026931A1 Transceiver for full duplex transmission of digital signals on a single line
04/08/1981EP0026602A1 A method of writing into and reading from the memory of a buffer memory system and a buffer memory system using such a method
04/01/1981EP0025899A2 Circuit arrangement for data transmission
03/1981
03/31/1981US4259744 Signal generator
03/25/1981EP0025483A2 Self-switching bidirectional digital line drivers
03/03/1981US4254501 High impedance, Manchester (3 state) to TTL (2 wire, 2 state) transceiver for tapped bus transmission systems
02/1981
02/11/1981EP0023558A1 Method for the transmission of digital message signals on a two-wire transmission line in full duplex operation
02/10/1981US4250456 Device for demodulating PSK-FM double modulated carrier signals
02/03/1981US4249254 Arrangement for restituting selection signals
02/03/1981CA1095193A1 Multiplexing
01/1981
01/27/1981US4247935 Arrangement for converting start-stop signals into an isochronous signal
01/27/1981CA1094643A1 Duplex data tansmission modem utilizing an injected tone for shifting power within the transmit spectrum
01/13/1981US4245341 Device for transmitting stochastically coded information
01/13/1981CA1093698A1 Arrangement for simultaneous two-way data transmission over two-wire circuits
01/07/1981EP0021145A1 Message multiplexing arrangement in a digital data communication system
01/07/1981EP0020669A1 A process and an apparatus for transferring binary information representing at least two parameters.
12/1980
12/23/1980US4241444 Arrangement for time-division multiplex PWM data transmission
12/23/1980US4241398 Computer network, line protocol system
12/16/1980US4239934 Means and an apparatus for synchronizing an orthogonal diphase code receiver
12/09/1980US4238851 Packet transmission system
12/09/1980US4238779 Data transmission and reception system
11/1980
11/27/1980WO1980002631A1 Data transmission arrangement
11/25/1980US4236244 Digital communications transmission system
11/18/1980US4234949 Multiplexer and time duration measuring circuit
10/1980
10/29/1980EP0018012A1 Digital telecommunication system for two-wire separated-site operation
10/29/1980EP0017835A1 Circuitry for controlling the transmission of digital signals, especially PCM signals, between connection points of a time division multiplexing telecommunication network, especially a PCM network
10/28/1980US4230903 Data transmission system
10/21/1980US4229763 Optical high density FM recording device with corrective signal
10/07/1980CA1087258A1 Circuit for wire transmission of high frequency data communication pulse signals
10/01/1980EP0016281A1 A data carrier system, especially a subscriber/digital data carrier system, and a frequency synthesizer suitable therefor
09/1980
09/30/1980US4225939 Bidirectional data communication system
09/23/1980US4224474 Method and apparatus for demultiplexing multiplexed seismic data
09/23/1980CA1086398A1 Communication system using a multidirectional repeater
09/17/1980EP0015730A1 A data transmission system, and a method of passing data through a data transmission system
09/02/1980US4220816 Digital duplex transmission system
08/1980
08/12/1980US4217572 Arrangements for transmitting electrical signals between two devices which are connected by contacts
07/1980
07/29/1980US4215369 Digital transmission system for television video signals
07/29/1980CA1082827A1 Recursive-like adaptive echo canceller
07/29/1980CA1082787A1 Method and apparatus for signaling in a communication system
07/22/1980US4214128 Method and apparatus for demultiplexing multiplexed seismic data
07/22/1980US4214123 Bidirectional telewriting system operating in an alternating mode over a single carrier
07/15/1980CA1081816A1 Bidirectional digital information transmission system using a single two-wire line
07/09/1980EP0013103A1 Motor vehicle electrical system
07/08/1980US4212013 Duplex-transmitter receiver arrangement
07/01/1980US4210782 Distributed control type telephone switching system
07/01/1980US4210777 Pseudo-transparent stop bit generator
06/1980
06/25/1980EP0012509A1 Function coding system via digital addresses in a communication system
06/17/1980CA1079857A1 Multi-line, multi-mode modulator using bandwidth reduction for digital fsk and dpsk modulation
06/17/1980CA1079817A1 Data bus arrangement for josephson tunneling device logic interconnections
06/12/1980WO1980001228A1 A process and an apparatus for transferring information representing at least two parameters
04/1980
04/22/1980US4199761 Multichannel radio communication system for automated power line distribution networks
04/16/1980EP0009557A1 Method and circuit for the simultaneous coding of two binary signal sequences into one pulse sequence, method and circuit for decoding the latter sequence, and their application to an interface transmitter-receiver
04/08/1980CA1075385A1 Character-frame-governed t.d.m. transmission of data
03/1980
03/25/1980US4195351 Loop configured data transmission system
03/19/1980EP0008738A1 Method and circuit for transmitting a ternary data signal in full duplex over a two-wire line
03/19/1980EP0008608A1 Circuit arrangement for carrying out a loop test for data transmission lines
03/18/1980US4194092 Device for detecting a frequency in a PCM coded signal
03/05/1980WO1981000655A1 Wire data transmission system
03/05/1980EP0008416A1 Arrangement for transmitting digital data signals
1 ... 272 273 274 275 276 277 278 279 280 281 282 283 284