Patents
Patents for H04J 3 - Time-division multiplex systems (63,408)
03/1993
03/23/1993US5197062 Method and system for simultaneous analysis of multiplexed channels
03/23/1993CA1314935C Optical communications network
03/17/1993EP0532431A1 Method and device for multiplexing
03/17/1993EP0531661A2 A time slot assigner for use in a serial communication system
03/16/1993US5195091 Communications system
03/16/1993US5195090 Wireless access telephone-to-telephone network interface architecture
03/16/1993US5195088 Circuit arrangement for bit rate adaptation
03/10/1993EP0530749A1 Method and apparatus for synchronising a clock-circuit of a switching communication system
03/10/1993EP0530393A1 Method and apparatus for synchronising a clockcircuit of a switching communication system
03/10/1993EP0247189B1 Apparatus for encoding and transmitting signals
03/09/1993US5193091 Tdm communication system for a wide area site and a plurality of local sites
03/09/1993US5193089 Key telephone system
03/09/1993CA1314337C Isdn traffic generator adapter
03/04/1993WO1993004545A1 Method for synchronizing synchronous data communication network, and communication device used in the network
03/04/1993WO1993004544A1 Improvements in or relating to digital communication systems
03/04/1993WO1993004542A1 Cell-multiplexing process for several receivers connected by a transmission line
03/04/1993WO1993004541A1 Multiport multidrop digital system
03/04/1993CA2116228A1 Multiport multidrop digital system
03/03/1993EP0530030A2 Circuit for detecting synchronizing signal in frame synchronization data transmission
03/03/1993EP0529649A2 Virtual tributary path idle insertion using timeslot interchange
03/03/1993EP0529602A2 Differential receiver which is tolerant of line faults
03/03/1993EP0529358A1 Memory unit with address generator
03/03/1993EP0529104A2 Telecommunication system
03/02/1993US5191576 Method for broadcasting of digital data, notably for radio broadcasting at high throughput rate towards mobile receivers, with time frequency interlacing and analog synchronization
03/02/1993CA2003939C Active signalling transmitter control
02/1993
02/24/1993EP0528402A2 Method and apparatus for processing virtual tributaries in SONET
02/24/1993CN1069374A Sdh data transmission timing
02/23/1993US5189671 Apparatus and method for formatting variable length data packets for a transmission network
02/23/1993US5189670 Data packet transmission system accommodating different substation response times
02/23/1993US5189410 Digital cross connect system
02/18/1993WO1993003555A1 Bandwidth management and congestion control scheme for multicast atm networks
02/16/1993US5187706 Dual access rings for communications networks
02/16/1993US5187704 Monitoring method for stand-by circuits suitable for a multiplexing/demultiplexing apparatus
02/16/1993CA1313717C D channel monitor
02/10/1993CN1068925A System and method for combining multiple composite video signals
02/09/1993WO1993003569A1 Method and apparatus for dynamic bandwidth allocation in a digital communication session
02/09/1993US5185880 Stored instructions executing type timing signal generating system
02/09/1993US5185863 Byte-wide elasticity buffer
02/09/1993US5185738 Fiberoptic telephone systems
02/09/1993US5185736 Synchronous optical transmission system
02/09/1993CA1313576C Method and apparatus for connecting isdn devices over an analog telephone line
02/09/1993CA1313573C Complex multiplexer/demultiplexer apparatus
02/04/1993WO1993002514A2 Apparatus for high speed data transfer
02/04/1993WO1993002513A1 Basic rate interface
02/04/1993WO1993002511A1 Modular, user programmable telecommunications system with distributed processing
02/03/1993EP0526202A2 Local oscillating frequency synthesizer for use in a TDMA system
02/03/1993EP0525874A2 Asynchronous access FIFO memory buffer with padding flag
02/03/1993EP0525845A1 Multiplexing system for subchannels with different priority levels
02/03/1993EP0525771A2 Data processing device comprising a multiport RAM as a sequential circuit
02/03/1993EP0525770A2 Method and apparatus for renewing AU-4 and TU-3 pointers of synchronous digital hierarchy
02/03/1993EP0525121A1 Distributed protocol for improving the survivability of telecommunications trunk networks
02/03/1993EP0524988A1 Multiport-multipoint digital data service
02/03/1993EP0524940A1 Channel selection arbitration
02/02/1993US5184350 Telephone communication system having an enhanced timing circuit
02/02/1993US5184347 Adaptive synchronization arrangement
01/1993
01/28/1993DE4129543C1 Transmission of async. additional data over audio channels in time multiplex system - adding data to some of audio channels and inputting to multiplexer receiving signals from other channels handling only audio signals
01/27/1993EP0524676A1 Method and arrangement for data transmission
01/27/1993EP0524297A1 Digital/audio interactive communication network
01/26/1993US5182749 Receiver for recovering data in a forward and reverse direction in time
01/26/1993US5182467 High performance multiplexer for improving bit error rate
01/26/1993CA1313278C Multiplexed address control in a tdm communication system
01/26/1993CA1313246C Concentrator system with polling-response means for detecting failures to stop tariff charges on locally established intraoffice calls
01/22/1993EP0579595A4 Clock dejitter circuits for regenerating jittered clock signals.
01/20/1993EP0523779A1 Direct conversion receiver
01/20/1993EP0523648A2 Random access data communication system with slot assignment capability for contending users
01/20/1993EP0523362A2 Broadcast-initiated bipartite frame multi-access protocoll
01/20/1993EP0523299A1 System and method for combining multiple composite video signals
01/20/1993EP0523059A1 Flexible-multiplexing process and device
01/19/1993US5181229 Data transmission arrangement using a statistic coding, a transmitter and a receiver section suitable for such an arrangement
01/19/1993US5181202 Ring bus station having dual oscillators
01/19/1993CA1312919C Public service trunking simulcast system
01/14/1993DE4212811A1 Analoger decodierschaltkreis Analog decoding circuitry
01/14/1993DE4123137A1 Transmission system for HDTV complex digital signals - has transmitter and receiver for additional synchronising signal respectively associated with multiplexer and demultiplexer
01/14/1993DE4123007A1 Data rate matching method using packing data - storing input words in registers of buffer memory, controlling multiplexer w.r.t. number of bits in output word and varying bits in synchronising word
01/13/1993EP0522797A2 Synchronous digital signal to asynchronous digital signal desynchronizer
01/13/1993EP0522775A2 Adaptive synchronization arrangement
01/13/1993EP0522774A2 Adaptive synchronization arrangement
01/13/1993EP0522773A2 Mobile-telephone system call processing arrangement
01/13/1993EP0522772A2 Wireless access telephone-to-telephone network interface architecture
01/13/1993EP0522759A2 Circuit for reliable switching over of signal processing circuits
01/13/1993EP0522748A2 SDH data transmission timing
01/13/1993EP0522636A2 Communication protocol for main and mobile stations where time slots are used for data packet transmission
01/13/1993EP0522607A1 A method and an arrangement for synchronizing two or more communication networks of the time multiplex type
01/13/1993EP0522379A2 Optical time multiplexing
01/13/1993EP0522186A1 Multiplexer
01/13/1993EP0522047A1 Method for embedding information in modem handshake procedure and modems incorporating the same
01/13/1993EP0470126A4 Digital radio communication system and two way-radio
01/13/1993CN1068001A Spare multiplexing transmission
01/12/1993US5179664 Symbol-wide elasticity buffer with a read-only section and a read-write section
01/12/1993US5179556 Bandwidth management and congestion control scheme for multicast ATM networks
01/12/1993US5179552 Crosspoint matrix switching element for a packet switch
01/12/1993US5179549 Statistical measurement equipment and telecommunication system using same
01/12/1993US5179548 Self-healing bidirectional logical-ring network using crossconnects
01/12/1993CA1312682C Frame synchronization in a network of time multiplexed optical space switches
01/11/1993CA2073114A1 Sdh data transmission timing
01/09/1993CA2073319A1 Method and arrangment for data transmission
01/07/1993WO1993000756A1 Self-healing bidirectional logical-ring network using crossconnects
01/07/1993EP0521301A2 Flexible interface system for interfacing different complements of port circuits to a PCM telephony switching system
01/07/1993EP0521197A1 Method for determining equalization delays in a transmission system and related transmission system
01/07/1993DE4122276A1 Digital communication system allowing time division multiplexing - sends fault alarm via all other exchange-interconnecting cables if cable fails from first exchange drawing clock signal from this cable