Patents
Sitemap › H04 - Electric communication technique › H04J - Multiplex communication › H04J 3 - Time-division multiplex systems
Patents for H04J 3 - Time-division multiplex systems (63,408)
09/1990
09/25/1990US4959831 Single wire bus smart keypad controller system
09/25/1990US4959830 Method and apparatus for through-connecting a wideband connection in a digital time switch
09/25/1990US4959828 Multi-channel infrared cableless communication system
09/23/1990CA2012654A1 Method and apparatus for converting a gap-infested read-in clock into a gap-free-read-out clock
09/20/1990WO1990010983A1 Telecommunications interface with improved jitter reporting
09/20/1990WO1990010980A1 Time domain radio transmission system
09/19/1990EP0388051A2 Technique for converting either way between a plurality of N synchronized serial bit streams and a parallel TDM format
09/19/1990EP0387543A2 Synchronous transport module STM-o
09/18/1990US4958344 System for transmitting and receiving asynchronous nonhomogeneous variable width parallel data over a synchronous high speed serial transmission media
09/18/1990CA1274301A1 Telephone exchange
09/18/1990CA1274292A1 Protection channel monitoring system using a check signal comprising two different n-bit code patterns sequentially arranged at random
09/18/1990CA1274281A1 Device for controlling the transmitting power of a radio link
09/13/1990DE3907737A1 System for generating an STM-1 signal (Synchronous Transport Module) from a 140 Mbit/s signal
09/12/1990EP0386908A2 PCM communication system
09/12/1990EP0386877A1 Telecommunications system
09/12/1990EP0386828A2 Demultiplexer for a serial and isochronous multiplex signal
09/12/1990EP0386483A1 Format converting system for synchronous optical network
09/12/1990EP0386466A2 Optical information transmission system in the subscriber region
09/11/1990US4956835 Method and apparatus for self-restoring and self-provisioning communication networks
09/11/1990CA1274009A1 Tdma communication system having common local path medium and local time slot for intraoffice calls
09/10/1990CA2011284A1 Pcm communication system
09/05/1990EP0385644A1 Clock distribution arrangement for time-multiplexed switched optical network
09/05/1990EP0385288A2 Method for the time-division multiplex transmission of digital messages
09/05/1990EP0385127A2 Communication network with switchable network nodes
09/05/1990EP0385075A2 Method for digital communication
09/04/1990US4955020 Bus architecture for digital communications
09/04/1990US4955019 Multimedia information exchanging system and equipment therefor
09/04/1990CA2011283A1 Demultiplexer for a serial and isochronous multiplex signal
09/04/1990CA1273697A1 Multiplexed digital packet telephone system
08/1990
08/31/1990CA2007828A1 Clock distribution arrangement for time-multiplexed switched optical network
08/29/1990EP0384207A2 Method of allocating digital signals to parallel receiving channels
08/29/1990EP0384177A2 Automatic vernier synchronization of skewed data streams
08/29/1990EP0383945A1 Drop/insert channel selecting system
08/29/1990EP0215957B1 Multiplex system
08/29/1990CN1009410B Facility for fast frame and phase synchronization
08/28/1990US4953163 TDM transmission system
08/28/1990US4952070 Digital data coding technique
08/28/1990CA1273438A1 Address comparator
08/24/1990CA2010810A1 Time synchronization of control networks
08/23/1990DE4013317A1 Stopfverfahren zur reduktion des wartezeitjitters und anordnung zur durchfuehrung des verfahrens Stuffing for the reduction of the waiting time jitter and arrangement for implementing the method
08/23/1990DE3940531A1 Information encoding into PWM half-period sequence
08/23/1990DE3904900A1 Method for the digital and/or analog coding of information of one, two or more channels and/or frequency or bandwidth reduction and/or increase in transmission reliability
08/22/1990WO1990010343A1 Time division multiplexer/demultiplexer with deterministic time slot assignment
08/22/1990EP0383447A1 Telecommunications system
08/22/1990EP0383437A2 Format converter
08/22/1990EP0383291A1 Transmission failure diagnosis apparatus
08/22/1990EP0182915B1 Apparatus for transmitting digital signals
08/21/1990CA1273134A1 Telephone signal transmission device
08/21/1990CA1273133A1 Multiplexing arrangement for a digital transmission system
08/16/1990EP0382363A2 Method and apparatus for multiplexing sub-rate channels in a digital data communication system
08/16/1990EP0382362A2 Methods and apparatus for performing time interleaved multiplexed rate adaptation for sub-rate channels in a digital data communication system
08/16/1990EP0382361A2 Methods and apparatus for flexibly allocating bandwidth for a point-to-point, serial, bidirectional communicationn path
08/16/1990EP0382211A2 Communication terminal connection system
08/14/1990US4949395 Method and arrangement for dynamically allocating time slots to connections in a digital mobile radio system
08/14/1990US4949339 Multiplexer apparatus adaptable for two kinds of transmission rates
08/14/1990US4949335 A TDM quasi-duplex system
08/14/1990CA1272784A1 Distributed timing control for a distributed digital communication system
08/09/1990WO1990009062A1 Transceiver with serial control port
08/08/1990EP0381515A2 Integrated communications system for HDLC variable-length data packets and fixed-length voice/video packets
08/08/1990EP0381387A2 Message generating communication apparatus
08/08/1990EP0381215A2 Method and apparatus for reducing noise in a linked compressor-expander telecommunications system
08/08/1990EP0380865A2 Multiplexer frame sychronization technique
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
08/07/1990US4947451 Multiple accessing satellite communication system having standby central station
08/07/1990US4947394 Spare channel monitor circuit
08/07/1990US4947391 Arrangements for producing and recognizing information identifying non-occupied transmission paths in a digital transmission system
08/07/1990US4947385 Monitoring system for a local bus network in a star structure
08/02/1990CA2008922A1 Method and apparatus for reducing noise in a linked compressor- expander telecommunications system
08/01/1990EP0380372A1 Telecommunications system
08/01/1990CN1044370A Active signalling transmitter control
07/1990
07/31/1990US4945548 Method and apparatus for detecting impending overflow and/or underrun of elasticity buffer
07/30/1990CA2005898A1 Message generating communication apparatus having a message preamble format allowing parts of certain messages to be ignored
07/28/1990WO1990009073A1 Telecommunications system
07/28/1990WO1990009072A1 Telecommunications system
07/28/1990WO1990009071A1 Telecommunications system
07/26/1990WO1990008438A1 Active signalling transmitter control
07/26/1990WO1990008436A1 Spectrally efficient tdm duplex communication system
07/26/1990WO1990008435A1 A tdm quasi-duplex system
07/26/1990WO1990008434A1 Multiple control slot tdm/fdm communication system
07/25/1990EP0379384A2 A phase adjustment circuit
07/25/1990EP0379095A1 Synchronous transport-module STM-O
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
07/24/1990US4944024 Method and apparatus for reducing noise in a linked compressor-expander telecommunications system
07/17/1990US4942593 Telecommunications interface with improved jitter reporting
07/17/1990US4942573 Loosely coupled parallel network simulator
07/17/1990US4942570 Multiple control slot TDM/FDM communication system
07/12/1990WO1990007832A1 Communication switching system
07/12/1990WO1990007831A1 Fault location operating system with loopback
07/12/1990WO1990004895A3 Information coding process
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
07/11/1990CN1043843A Communication switching system
07/11/1990CN1043840A Demultiplexer with circuit for reducing waiting-time jitter
07/11/1990CA2007259A1 Interactive multimedia presentation and communications system
07/10/1990WO1990007829A1 Digital signal multiplexer and separator
07/10/1990US4941161 Detection of digital signal error rates
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