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)
01/1992
01/07/1992US5079768 Method for frequency sharing in frequency hopping communications network
01/07/1992US5079763 Customer premises network node access protocol
01/07/1992CA1294073C Tdma radio system employing bpsk synchronization for qpsk signals subject to random phase variation and multipath fading
01/05/1992WO1992001343A1 Circuit for extracting asynchronous signal
01/02/1992EP0463808A2 Switching of a digital signal to an alternate channel transmitted via a different route
01/02/1992EP0463625A2 Device operable with an excellent spectrum suppression
12/1991
12/31/1991US5077761 Elastic buffer circuit
12/31/1991US5077735 Method and an apparatus for mutually converting different signaling systems
12/31/1991US5077734 Electronic exchange apparatus synchronized with digital network
12/31/1991US5077529 Wide bandwidth digital phase locked loop with reduced low frequency intrinsic jitter
12/31/1991CA1293820C Input/output network for computer system
12/27/1991EP0462689A2 Digital circuit multiplexing equipment
12/27/1991EP0462650A2 Time-division multiplex transmission system
12/27/1991EP0462429A2 Circuit arrangement for digital data transmission
12/27/1991EP0215049B1 Tdma/tdm interfacing
12/26/1991WO1991020141A1 Communications-transmission system
12/19/1991DE4018536A1 Signal stream clock cycle matching - writing bytes of each partial system in respective memory section
12/18/1991EP0461703A2 Circuit for bit-rate adaption
12/18/1991EP0461445A2 Method for transmitting at a high data rate over a plurality of lower speed channels
12/17/1991CA1293338C Variable bandwidth control system
12/12/1991WO1991019370A2 Multiplex modulated system
12/12/1991WO1991019369A1 Data multiplexer with simultaneous multiple channel capability
12/12/1991WO1991019243A1 Clock distribution apparatus and processes
12/12/1991DE4018691A1 Buffer store overflow alarm device - has buffer store with input-output address comparator feeding logic triggering warning
12/11/1991EP0460835A2 SDH Rejustification
12/11/1991EP0460604A2 Pattern sychronizing circuit
12/11/1991EP0460398A1 Passive optical telecommunication system
12/10/1991US5072446 Pcm communication system
12/07/1991CA2043803A1 Pattern synchronizing circuit
12/05/1991CA2043375A1 Sdh rejustification
12/04/1991EP0459911A1 Procedure of reducing the low frequency component of the jitter in a digital transmission system
12/04/1991EP0459757A2 Network adapter
12/04/1991EP0459686A2 Digital signal synchronization employing single elastic store
12/04/1991EP0459005A1 Method and arrangement for the transmission of operational status information between centralised and decentralised devices of a communication system
12/03/1991US5070517 Method and circuit for retuning the frequency of a frequency source
12/03/1991US5070497 Transmission network with switchable network nodes
11/1991
11/28/1991DE4016359A1 Passive optical communications system for telecommunications network
11/27/1991EP0458623A2 A method for adjusting current clock counts in a distributed computer system
11/27/1991EP0458186A2 Arrangement for reduction of phase jitter
11/26/1991US5068899 Transmission of wideband speech signals
11/26/1991US5068879 Monitoring of digital transmission systems
11/26/1991US5068878 Method and apparatus for data interleave with pseudo-randomized resynchronization
11/26/1991US5068877 Method for synchronizing interconnected digital equipment
11/21/1991EP0456974A2 Method and apparatus for generating and detecting distributed block synchronization
11/21/1991EP0456973A2 Synchronisation apparatus
11/21/1991EP0456946A1 Method and apparatus for recognition of a framing pattern distributed in a serial bit stream
11/21/1991EP0456930A1 Non-reflecting transmission line termination
11/21/1991EP0456903A1 Method and arrangement for reduction of waiting time jitter
11/21/1991DE4016173A1 Bit error rate measurement system - has PLL synthesiser coupled in loop to provide signals for data rate
11/19/1991WO1991018457A1 Method of and circuit for synchronizing data
11/19/1991US5067126 Method and apparatus for mapping a digital signal carrier to another
11/19/1991CA1292333C Digital time division multiplex systems and method of controlling same
11/19/1991CA1292332C Digital signal multiplexing apparatus
11/17/1991CA2037146A1 Configurable data link connecting sequencer
11/14/1991DE4015283A1 Synchronising frame structure in sync. digital hierarchy
11/14/1991DE4014800A1 Determining mean filling state of flexible memory - applying digital signal to memory from which second digital signal is generated for comparison
11/14/1991CA2019196A1 Non-reflecting transmission line termination
11/13/1991EP0456625A1 A method of transmitting different commands relating to the choice of transmitter antenna in a time multiplex radio communication system
11/13/1991EP0456258A2 Network synchronization unit for a telephone exchange
11/13/1991EP0456206A2 Fault recovery system of a ring network
11/13/1991EP0455963A1 Arrangement and method for transforming a first useful signal from the frame of a first digital signal by pulse stuffing techniques to the frame of a second digital signal
11/13/1991EP0455865A2 Circuit for inserting a useful signal from a frame of a first digital signal using stuffing in a frame of a second digital signal and the use of this circuit
11/12/1991US5065399 Telecommunication network trouble recovery system
11/12/1991US5065398 TDMA satellite communication method and system
11/12/1991US5065396 Inverse multiplexer and demultiplexer techniques
11/12/1991US5065395 Rudimentary digital speech interpolation apparatus and method
11/12/1991CA1292052C Multimedia information exchanging system
11/09/1991CA2033850A1 Violation control circuit in isdn
11/07/1991DE4014396A1 Passive optical communications system for telecommunications network
11/06/1991EP0454727A1 Active signalling transmitter control.
11/05/1991US5063595 Optical communications network
11/05/1991US5063564 Yellow alarm control in DS1 SF and DS1 ESF transcoding
11/05/1991US5063446 Apparatus for transmitting auxiliary signal in a TV channel
11/05/1991CA2041747A1 Passive optical telecommunication system
11/05/1991CA1291832C Higher order digital transmission system including a multiplexer and a demultiplexer
11/05/1991CA1291831C Drop/insert processing circuit
10/1991
10/31/1991WO1991016776A1 Multiport-multipoint digital data service
10/31/1991WO1991016775A1 Communication system with adaptive media access control
10/31/1991WO1991016774A1 Stuffing process and device for reducing waiting time jitter
10/31/1991DE4013204A1 Digital data stream transmission system - combines second part of each data signal before transmission
10/30/1991EP0454585A1 An antenna selection diversity reception system
10/30/1991EP0454246A1 Phase-adjusting circuit for signals in a system with double digital links
10/30/1991EP0453876A2 Synchronisation method for SDH-systems and method and circuit for the recognition of various data structures
10/30/1991CN1055848A Interconnecting and processing system for facilitating frequency hopping
10/29/1991US5062124 Network synchronization system
10/29/1991US5062107 Synchronizing circuit for reducing waiting-time jitter in a demultiplexer
10/29/1991US5062105 Programmable multiplexing techniques for mapping a capacity domain into a time domain within a frame
10/29/1991CA1291549C Method and apparatus for self-healing and self-provisioning networks
10/28/1991WO1999055036A2 Methods and apparatuses for allocating time slots to circuit-switched channels
10/24/1991DE4012762A1 Synchronisation system for digital hierarchy network - detects frame sync. words and decoded header codewords to switch to sync. state
10/23/1991EP0453355A2 Congestion avoidance in high-speed network carrying bursty traffic
10/23/1991EP0453229A2 Method for transmission of variable length code
10/23/1991EP0452878A1 Multiplexing circuit for clock signals
10/22/1991US5060241 Synchronizing system for a private digital exchange connected to an isdn
10/22/1991US5060239 Transfer strobe time delay selector and method for performing same
10/22/1991US5060229 Serial transport frame format method
10/22/1991US5060227 Digital telephone switch with simultaneous dual PCM format compatibility
10/22/1991US5059926 Frequency synchronization apparatus
10/22/1991US5059924 Clock adapter using a phase locked loop configured as a frequency multiplier with a non-integer feedback divider
10/22/1991CA1291280C Phase-coherent tdma quadrature receiver for multipath fading channels
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