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)
01/1990
01/17/1990EP0350637A2 Switching method for multistage interconnection networks with hot spot traffic
01/16/1990US4894846 Method for maintaining a correct time in a distributed processing system
01/16/1990US4894826 Message generating communication apparatus having a message preamble format allowing parts of certain messages to be ignored
01/16/1990US4894821 Time division switching system with time slot alignment circuitry
01/11/1990WO1990000332A1 An interface unit
01/10/1990EP0350149A2 Method of maintaining a correct time in a distributed processing system
01/10/1990EP0349715A2 Method and circuit for producing a phase-delayed clock signal
01/10/1990CN1038735A Pcm communication system
01/10/1990CN1038732A Processor based linked compressor-expander telecommunications system
01/10/1990CN1038730A Technique for improved subjective performance in communication system using attenuated noise-fill
01/09/1990US4893318 Method for referencing multiple data processors to a common time reference
01/09/1990US4893306 Method and apparatus for multiplexing circuit and packet traffic
01/09/1990US4893305 Inband dynamic port allocation
01/09/1990CA1264384A1 Circuit for detecting plural kinds of multi-frame synchronization on a digital transmission line
01/09/1990CA1264383A1 Variable time slot communication system
01/02/1990US4891808 Self-synchronizing multiplexer
01/02/1990US4891807 Multiplexer with leakage current compensation
01/02/1990US4891805 Multiplexer with dynamic bandwidth allocation
12/1989
12/28/1989WO1989012931A1 Fast locking phase-locked loop utilizing frequency estimation
12/27/1989EP0348188A2 Data transmission
12/27/1989EP0348161A2 Data synchronisation
12/27/1989EP0348095A2 Non-interfering method for measuring propagation delay of telecommunications network and apparatus for accomplishing same
12/27/1989EP0348078A2 Technique for improved subjective perfomance in a communication system using attenuated noise-fill
12/27/1989EP0348074A2 PCM communication system
12/27/1989EP0261127B1 Tdm communication system for efficient spectrum utilization
12/27/1989CA1264097A1 Voice and data communication system
12/26/1989US4890304 Reliable recovery of data in encoder/decoder
12/26/1989US4890303 Method and circuit for synchronizing a digital data transmission system with a network-external clock
12/26/1989US4890282 Mixed mode compression for data transmission
12/19/1989US4888770 Algorithm for selecting channels for multiplexer frame
12/19/1989US4888768 Frame format for video codec
12/19/1989US4888765 Digital loop carrier system having programmable timeslot and bandwidth allocation circuit
12/14/1989WO1989012365A1 Process for switching signals into or out of subdomains of the supplementary signals of transmission modules of a synchronous digital signal hierarchy
12/13/1989CN1038006A Packet switches, switching methods, protocols and network
12/12/1989US4887266 Communication system
12/12/1989US4887261 Method and arrangement for transmitting a digital signal with a low bit rate in a time section, provided for higher bit rates, of a time division multiplexed signal
12/12/1989US4886981 Synchronizing circuit for a plurality of power units
12/12/1989CA1263899A1 Synchronization circuitry for duplex digital span equipment
12/12/1989CA1263898A1 Synchronization arrangement for time multiplexed data scanning circuitry
12/07/1989DE3818322A1 Circuit arrangement for cell breakdown in asynchronous time division multiplexing
12/06/1989EP0344534A1 Method of monitoring the quality of digital signals in sections of a transmission line
12/05/1989US4885758 Speed correction and stop bit control circuit for data communications device
12/05/1989US4885746 Frequency converter
12/05/1989US4885745 Algorithm for minimizing excursion in placement of channel selects into multiplexer frame
12/05/1989US4885741 Data communication arrangement with embedded matrix switch
12/05/1989CA1263772A1 Method of and apparatus for transmitting digital signals
11/1989
11/30/1989DE3816735A1 Method for transmitting 2 or more channels with an alternating current and/or frequency reduction of an alternating coding current
11/29/1989EP0343189A1 Tdma communications system with adaptive equalization.
11/28/1989US4884286 Elastic buffer for local area networks
11/28/1989US4884268 Repeater arrangement capable of avoiding accumulation of stuff jitters
11/28/1989US4884267 TDM transmission system
11/23/1989EP0343062A1 Method of sending data with compression and of receiving data with expansion over a digitized telephone line
11/23/1989EP0342861A2 Smoothing apparatus for independently clocked networks
11/23/1989EP0342844A2 Smoothing apparatus for independently clocked networks
11/23/1989EP0342686A2 Processor based linked compressor-expander telecommucications system
11/23/1989EP0342593A2 Pulse mode modulaton terminal equipment
11/23/1989EP0342547A1 Method for generating an alarm suppression signal
11/23/1989EP0342530A1 Switching network for digital audio signals
11/23/1989EP0342510A1 Method for the insertion of message packets with a fixed length in a pulse frame of a digital transmission system
11/23/1989EP0342469A1 Method of inserting an asynchronous 139 264 kbit/s signal in a 155 520 kbit/s signal
11/23/1989DE3816159A1 Method for the production of time references in a communications network
11/21/1989US4882739 Method for adjusting clocks of multiple data processors to a common time base
11/21/1989US4882738 Clock control system
11/21/1989US4882730 TDMA communication system having common time slots for system maintenance
11/21/1989US4882704 Hand-shake type data transfer control circuit
11/21/1989CA1263168A1 Telecommunication system for alternatingly transmitting circuit-switched and packet-switched information
11/16/1989WO1989011190A1 Isdn traffic generator adaptor
11/16/1989WO1989011189A1 D channel monitor
11/16/1989WO1989011188A1 Coupling field for digital audio signals
11/15/1989EP0341891A2 TDM data transmission system
11/15/1989EP0116067B1 Demultiplexer circuit
11/15/1989CN1037247A Frequency clock synchronisation
11/14/1989US4881242 Circuit arrangement for the transmission of data signals
11/14/1989US4881225 Digital loop carrier system having multiplexed interrupt structure
11/14/1989US4881224 Framing algorithm for bit interleaved time division multiplexer
11/14/1989US4881223 Asynchronous time division communication system
11/14/1989US4881220 Multiplex communication system for sequence controllers
11/14/1989US4881196 Data transmission line branching system
11/14/1989CA1262937A1 Frequency converter
11/07/1989US4879727 Adaptive threshold sampling controller
11/07/1989EP0328569A4 Data transmission using switched resonance.
11/02/1989EP0339797A2 Method and apparatus for nodes in network to avoid shrinkage of an interframe gap
11/02/1989EP0339403A2 Process and circuit for multiplexing word-structured input signals
11/01/1989CN1036867A 多路复用器 Multiplexer
10/1989
10/31/1989US4878229 Fast frame and phase synchronization apparatus
10/31/1989US4878219 Method and apparatus for nodes in network to avoid shrinkage of an interframe gap
10/31/1989US4878217 Data outputting device
10/25/1989EP0338668A2 Frequency clock synchronisation
10/24/1989US4876740 Radiotelephone system employing digitized speech/data signalling
10/24/1989US4876698 System for transmitting sequences of digital samples encoded by variable-length binary words
10/24/1989US4876696 Transmission system for transmitting multifrequency signals or modem signals with speech signals
10/24/1989US4876686 Fault detection signal transmission system
10/24/1989US4876683 Repeater for regenerating frame-multiplexed signal
10/24/1989US4876682 Switching tdm digital signals
10/19/1989WO1989010033A1 A regenerative node for a communications network
10/19/1989WO1989010032A1 High speed digital signal framer-demultiplexer
10/19/1989DE3822857C1 Method and circuit arrangement for producing a phase-shifted clock signal
10/18/1989EP0337619A1 Communication system
10/17/1989EP0289526A4 Adaptive threshold sampling method.
10/17/1989CA1262384A1 Frame synchronization with slip compensation
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