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)
10/1989
10/17/1989CA1262383A1 Method and apparatus for detecting frame synchronization
10/11/1989EP0336766A1 A regenerative node for a communications network
10/11/1989EP0335877A1 Method for transmitting data in packet switching networks.
10/11/1989EP0222792B1 Jitter measurement method and apparatus
10/10/1989US4873684 Method and apparatus for multiplexing of input signals having differing frequencies and demultiplexing same
10/10/1989US4873683 TDMA radio system employing BPSK synchronization for QPSK signals subject to random phase variation and multipath fading
10/10/1989CA1262280A1 Method for combining a digital video signal and three digital narrow band signals to form a 139,264 kbit/s signal
10/05/1989WO1989009519A1 Mixed mode compression for data transmission
10/05/1989WO1989009518A1 Communication system
10/05/1989WO1989009446A1 Communication processor for a packet-switched network
10/05/1989DE3810400A1 Cell former in an asynchronous time division multiplex system
10/03/1989US4872006 Data transmission system
10/03/1989CA1262173A1 Synchronization of asynchronous data signals
09/1989
09/28/1989DE3809089A1 Exchange for a meshed telecommunications network
09/27/1989EP0334569A2 Method of and system for transmitting information
09/27/1989EP0334357A2 Pulse insertion circuit
09/27/1989EP0333942A1 Monitoring of digital transmission systems
09/26/1989CA1261980A1 Signal processing system
09/26/1989CA1261489A1 Frame find circuit and method
09/26/1989CA1261083A1 Data transmission system
09/26/1989CA1261081A1 Higher order digital transmission system including a multiplexer and a demultiplexer
09/26/1989CA1261070A1 Multiframe matrix data transmission and apparatus
09/26/1989CA1260635A1 Synchronization burst transmit phase control system
09/26/1989CA1260167A1 Frame synchronizing circuit
09/26/1989CA1260166A1 Digital signal channel distributor
09/26/1989CA1260124A1 Subscriber's line switching control system
09/21/1989DE3808035A1 Multiplexer for Gigabit rates
09/20/1989EP0333340A1 Multiplexer
09/20/1989EP0333196A2 Repeater for regenerating frame-multiplexed signal
09/20/1989EP0333122A2 Method and apparatus for frame synchronization
09/19/1989US4868864 Autocorrelating 2400 bps handshake sequence detector
09/19/1989US4868831 Zero byte time slot interchange (ZBTSI) encoder
09/19/1989CA1259659A1 Radiotelephone system employing digitized speech data signalling
09/13/1989EP0332465A2 Concentrator system with polling-response means for detecting failures to stop tariff charges on locally established intraoffice calls
09/13/1989EP0332197A2 A ring transmission system
09/13/1989CN2044395U Long distance multiple line transmission device modulated by pulse code
09/12/1989US4866737 High speed voiceband data transmission and reception
09/12/1989US4866711 Method of multiplex/demultiplex processing of information and equipment for performing the method
09/12/1989US4866704 Fiber optic voice/data network
09/06/1989EP0331118A2 Switching arrangement capable of switching burst time plan tables/channel assignment pattern tables of a specific terrestrial station
09/06/1989EP0331115A2 Scrambling/descrambling method using a memory for storing initial pseudo-random bit patterns respectively for submultiframes
09/06/1989EP0284604B1 Synchronizing circuit for a plurality of power units
09/06/1989CN1035404A Condition multiway transducer
09/05/1989US4864566 Precise multiplexed transmission and reception of analog and digital data through a narrow-band channel
09/05/1989US4864565 Method for frame synchronization of an exchange of a PCM time multiplex telecommunication system
09/05/1989US4864562 Sub-rate multi-media data transmission control system
09/05/1989US4864561 Technique for improved subjective performance in a communication system using attenuated noise-fill
09/05/1989US4864556 Synchronization arrangements for a digital telecommunications exchange system
08/1989
08/30/1989EP0330178A2 Multiple accessing satellite communication system having standby central station
08/29/1989US4862458 Multiplexed built in test equipment
08/29/1989US4862455 Demultiplexing circuit for a multiplex signal
08/29/1989US4862454 Switching method for multistage interconnection networks with hot spot traffic
08/24/1989WO1989007867A1 Wireless communication equipment and method of controlling the same
08/23/1989EP0329158A2 Method for the digital and/or analog coding of the information of one, two or several channels, and/or frequency or bandwidth reduction, and/or increase of the transmission security
08/23/1989EP0328569A1 Data transmission using switched resonance
08/22/1989US4860293 Supervision circuit for a non-encoded binary bit stream
08/22/1989US4860287 Network having a synchronizer for synchronization between a primary and a remote station
08/22/1989US4860286 Encoding method in transmission of plurality of oversampled data channels, and apparatus for carrying out the method
08/22/1989US4860285 Master/slave synchronizer
08/22/1989US4860283 Data multiplex transmission system
08/22/1989US4860282 System for transmitting auxiliary signal in a multiplex communication system
08/22/1989US4860009 Bidirectional multiframe converter for data communications systems
08/22/1989US4860001 Remote monitoring and controlling system
08/16/1989EP0328448A1 Process and device for the synchronisation of terminals communicating via a chain without temporary transparency
08/16/1989EP0327747A1 Digital transmission testing method and apparatus
08/15/1989US4858232 Distributed switching system
08/15/1989US4858224 Diagnostic method of equipment and system using the same
08/15/1989CA1258532A1 Coding device selectively connected to a transmission line
08/15/1989CA1258521A2 Digital signal transmitting system
08/15/1989CA1258520A2 Digital signal transmitting system
08/10/1989DE3901557A1 Switching device for digital multiplex signals
08/09/1989EP0327101A2 Satellite communication system with variable coding rate
08/08/1989US4855999 DTDM multiplexer with cross-point switch
08/08/1989US4855996 Time division multiplex arrangement
07/1989
07/27/1989WO1989006884A1 Multiplexed address control in a tdm communication system
07/27/1989DE3829051A1 Terminal identification control circuit
07/25/1989US4852157 Multi-task state machine signalling translator
07/25/1989US4852129 Data compression system using frequency band translation and intermediate sample extrapolation
07/25/1989US4852089 Methods and apparatus for allocating time slots and fragments on communications lines between adjacent nodes in a high granularity switching system
07/24/1989EP0308450A4 Jitter control in digital communications links.
07/24/1989EP0308449A4 Transfer of messages in a multiplexed system.
07/20/1989DE3744537A1 Wireless sound transmission by means of light
07/19/1989EP0324420A2 Transponder frequency offset compensation with recurrently assigned unique words
07/18/1989US4849995 Digital signal transmission system having frame synchronization operation
07/18/1989US4849977 D-5 Channel bank control structure and controller
07/18/1989US4849972 Digital data communications terminal and modules therefor
07/18/1989US4849970 Smoothing apparatus for an independently clocked network
07/18/1989US4849969 Implementation of smoothing apparatus for an independently clocked network
07/18/1989US4849965 Asynchronous digital time-division multiplexing system with distributed bus
07/18/1989US4849703 Method and apparatus for generating a data sampling clock locked to a baud clock contained in a data signal
07/18/1989CA1257718A1 Remote digital carrier alarm and terminal by-pass system
07/18/1989CA1257675A1 Switching tdm digital signals
07/12/1989CN1004784B 数据格式转换器 Data format converter
07/11/1989US4847877 Method and apparatus for detecting a predetermined bit pattern within a serial bit stream
07/11/1989US4847875 Timing circuit including jitter compensation
07/11/1989US4847836 Circuit arrangement for synchronizing the units in the switching exchanges and repeaters of a time-division multiplex transmission system
07/05/1989EP0323248A2 Time division switching for multi-channel calls using two time switch memories acting as a frame aligner
07/04/1989US4845752 Multi-signal processor synchronized system
07/04/1989US4845735 Non-interfering method for measuring propagation delay of telecommunications network and apparatus for accomplishing same
07/04/1989US4845711 Multiplexing and demultiplexing method and equipments measuring transmission quality and locating operation faults on multiplexed digital channels
1 ... 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 ... 635