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)
07/1989
07/04/1989US4845436 Frequency synthesizer suited for use in a time division multiplexing system
06/1989
06/29/1989DE3833025A1 Circuit arrangement for synchronising digital receivers, particularly satellite sound broadcast receivers
06/29/1989DE3805632C1 Circuit arrangement for maintaining an emergency operation in a broadband transmission link
06/28/1989EP0322029A1 Device for transforming data-packets into a regular multiplex in a TDMA transmission system
06/28/1989EP0322026A2 Conditional multiplexer
06/27/1989US4843352 Modulator for generating a burst-like modulated wave
06/27/1989CA1256553A1 Digital transmission system
06/21/1989EP0321454A2 A method of operating a multiple access communications system
06/21/1989EP0320968A2 Spare channel monitor circuit
06/21/1989EP0320882A2 Demultiplexer system
06/21/1989EP0320856A1 Method of transmission for time-multiplexed-signals
06/20/1989US4841550 Universal null DTE
06/20/1989US4841549 Simple, high performance digital data transmission system and method
06/20/1989US4841524 Digital data multiple conversion system for converting data having a frequency to data having another frequency by a digital stuffing method
06/20/1989US4840448 Optical fiber transmission apparatus, in particular for submarine use
06/13/1989US4839906 Processor based linked compressor-expander telecommunications system
06/13/1989US4839893 Telecommunications FIFO
06/13/1989US4839890 Data bit synchronizer
06/13/1989US4839650 Analog-to-digital conversion
06/13/1989CA1255824A1 Integrated electronic multiplex circuit and integrated electronic circuit including such a multiplex circuit
06/13/1989CA1255822A1 Pcm frame synchronizing unit
06/07/1989EP0318689A2 Method and circuit for trimming the frequency of a frequency source
06/07/1989EP0318686A2 TDMA Radio system employing BPSK synchronisation for QPSK signals subject to random phase variation and multipath fading
06/07/1989EP0318685A2 Phase coherent TDMA quadrature receiver for multipath fading channels
06/07/1989EP0318581A1 High speed scrambling at lower clock speeds
06/06/1989US4837850 Hierarchic synchronization method and circuit arrangement for exchanges of a mesh telecommunication network
06/06/1989US4837827 Method for transmitting two independent types of information and device for implementing the method
06/06/1989US4837783 Device for deriving a synchronizing signal
06/06/1989US4837763 Multiplexer for multiplexing insertion codes and a digital data signal train
06/06/1989US4837760 Communications system with protection switching using individual selectors
06/06/1989CA1255403A1 Frame synchronization detection system
06/06/1989CA1255402A1 Pseudo random framing detector circuit
06/06/1989CA1255401A1 Remote multiplexer for digital telephone system
06/01/1989WO1989005078A1 Optical communications network
06/01/1989WO1989005077A1 Optical communications network
06/01/1989WO1989005071A1 Apparatus and method for converting a frequency division multiplex to a time division multiplex
06/01/1989WO1989005070A1 Optical communications network
06/01/1989WO1989005069A1 Optical communications network
05/1989
05/31/1989EP0318335A1 Fault location in optical communications networks
05/31/1989EP0318334A1 Apparatus and method for converting a frequency division multiplex to a time division multiplex
05/31/1989EP0318333A1 Stations for a digital communications network
05/31/1989EP0318332A1 Synchronisation of digital communications network
05/31/1989EP0318331A1 Scrambling in a digital communications network
05/31/1989EP0317654A1 Demultiplexing circuit
05/30/1989US4835791 Single sideband signal generator
05/30/1989US4835776 Communication filter
05/30/1989US4835770 Multiplexer/demultiplexer circuitry for LSI implementation
05/30/1989US4835768 High speed digital signal framer-demultiplexer
05/30/1989US4835763 Survivable ring network
05/30/1989CA1255019A1 Device for predicting unique word detection positions in a tdma station by using latest valid detection positions
05/30/1989CA1255018A1 System for controlling a change of sequence order of channel data
05/30/1989CA1255004A1 Digital signal transmission system
05/30/1989CA1254983A1 Stochastic time division multiplexing
05/24/1989CN1004323B Telecommunication system, in particular telephone system
05/23/1989US4833675 PCM frame slip detection in a channel
05/23/1989US4833674 Arrangement for processing received data in TDMA communications system and method therefor a TDMA communications system and method for retrieving received data in a preset order
05/23/1989US4833673 Time division multiplexer for DTDM bit streams
05/23/1989US4833671 DTDM multiplexing circuitry
05/23/1989US4833668 Fault detection in a full duplex optical communications system
05/23/1989CA1254681A1 Time division multiple access radio communication system
05/17/1989EP0316228A1 Time base circuit
05/16/1989US4831621 Device for analog multiplexing by charge transfer devices
05/16/1989CA1254314A1 Telephone system and method for transmitting digital information
05/16/1989CA1254313A1 Station of a tdma communication network capable of quickly changing communication traffic without causing an overlap between transmission bursts
05/10/1989EP0315028A1 Method for synchronising transmitters, control means and transmitters using said method and the application of said method
05/10/1989EP0314724A1 Control of optical systems.
05/09/1989US4829543 Phase-coherent TDMA quadrature receiver for multipath fading channels
05/09/1989US4829518 Multiplexing apparatus having BSI-code processing and bit interleave functions
05/09/1989US4829512 Loop-back control apparatus for a loop network having duplicate optical fiber transmission lines
05/02/1989US4827475 Transmitting a digital signal and an additional signal
05/02/1989US4827474 System and method of adjusting the interstation delay in an information transmission system
05/02/1989US4827225 Fast locking phase-locked loop utilizing frequency estimation
05/02/1989CA1253640A1 Channel allocation on a time division multiplex bus
05/02/1989CA1253639A1 Frame alignment of tributaries of a t.d.m. bit stream
05/02/1989CA1253638A1 Satellite communication system
05/02/1989CA1253603A1 Method of and circuit arrangement for through- switching broadband digital signals without phase jump in a synchronous broadband communication network
04/1989
04/26/1989EP0312911A2 Apparatus and method for master/slave synchronization
04/26/1989EP0312828A1 Circuit arrangement for routinely testing the timing distribution of a plurality of units operated with the same timing
04/25/1989US4825451 Technique for transmission of voice communications and apparatus useful therein
04/25/1989US4825437 Clock recovery arrangement especially for an information transmission system using the TDMA principle in one transmission direction
04/25/1989US4825436 Time division multiplexing system for N channels in a frame unit base
04/25/1989US4825434 Controlling access to a communication link by traffic types
04/25/1989CA1253255A1 System for simultaneously coding and decoding a plurality of signals
04/19/1989EP0312260A2 A high-speed demultiplexer circuit
04/19/1989EP0312259A2 A high-speed multiplexer circuit
04/18/1989US4823365 Synchronization method and elastic buffer circuit
04/18/1989US4823342 Time division exchange system having functions of compressing and expanding information
04/18/1989CA1252821A1 Photonic switching
04/12/1989EP0311448A2 Digital multiplexer
04/12/1989EP0311251A2 Apparatus and method for secure digital communication
04/12/1989EP0311181A2 Circuit arrangement for guaranteeing in time the correct channel allocation in a digital message communication system
04/11/1989US4821264 Adaptive concentration communication network ISDN access
04/11/1989US4821262 System for transmitting and receiving data in a time-division multiplex mode applicable to a vehicle
04/11/1989US4821260 Transmission system
04/11/1989US4821227 Plesiochronous matching apparatus
04/05/1989EP0310207A2 Analog-to-digital conversion apparatus
04/05/1989EP0310066A2 Programmable multiplexing/demultiplexing system
04/05/1989EP0309763A2 Multiplexer and demultiplexer apparatus adaptable for two kinds of transmission rates
04/04/1989US4819226 Framer circuit for use in a DTDM network
04/04/1989US4819208 Biodirectional elastic store circuit
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