Patents
Sitemap › H04 - Electric communication technique › H04L - Transmission of digital information, e.g. telegraphic communication › H04L 12 - Data switching networks
Patents for H04L 12 - Data switching networks (448,999)
09/1989
09/05/1989US4864560 System for changing priority of information
09/05/1989US4864559 Method of multicast message distribution
09/05/1989US4864558 Self-routing switch
09/05/1989US4864495 Apparatus for controlling vacant areas in buffer memory in a pocket transmission system
09/05/1989US4864291 SCSI converter
08/1989
08/30/1989EP0330044A1 Method and arrangement for exchanging data between a data terminal and at least one peripheral terminal
08/30/1989EP0329912A2 Communication system for transmission of broadband and baseband information
08/30/1989CN1035221A Interprocessor switching network
08/30/1989CN1035218A 数据分组交换 Packet switching
08/29/1989US4862461 Packet switch network protocol
08/29/1989US4862454 Switching method for multistage interconnection networks with hot spot traffic
08/29/1989US4862453 Communication system
08/29/1989US4862451 Method and apparatus for switching information between channels for synchronous information traffic and asynchronous data packets
08/29/1989US4862158 Extension arrangement and station connecting method for a ring communication system
08/29/1989CA1258894A1 Sequential data transmission system
08/24/1989WO1989007869A1 Uneven token distribution technique for token based local area network
08/24/1989WO1989007868A1 Marketing research system for obtaining retail data
08/24/1989WO1989007797A1 Switching system
08/24/1989DE3804283A1 Telecommunications switching network for voice, video and data
08/23/1989EP0329159A2 Congestion control method and apparatus for end-to-end packetcommunication
08/23/1989EP0329082A2 Self-routing switch and its routing method
08/23/1989EP0329005A1 Method for establishing virtual circuits via switches of a multistage switching arrangement
08/23/1989EP0328854A1 NxN interconnection networks formed of delta networks and method for the establishment of inlet-outlet permutations
08/23/1989EP0181880B1 Apparatus for interfacing with x21 equipment
08/22/1989US4860309 Trinary bus communication system
08/22/1989US4860284 Method and apparatus for identifying location of a lost token signal in a data communication network
08/22/1989US4860280 Apparatus and method for a secure and diagnosable antijabber communication circuit
08/22/1989US4860006 Heartbeat collision avoidance method and circuit
08/22/1989US4860003 Communication system having a packet structure field
08/22/1989US4860000 Data transmission system using sending right request signal transferred through loop transmission path
08/17/1989DE3803373A1 Circuit arrangement with a driver to maintain subscriber operation on asynchronous single-wire interfaces of an interconnected system
08/16/1989EP0328435A1 Information message transmission method and arrangement in an information transmission network comprising master stations and at least one slave station, particularly in a motor vehicle
08/16/1989EP0328237A2 Data packet switching
08/16/1989EP0328100A2 High throughput communication method and system for a digital mobile station when crossing a zone boundary during a session
08/16/1989EP0328004A1 Token ring transmission method
08/15/1989US4858232 Distributed switching system
08/15/1989US4858231 Bus interface loading assembly
08/15/1989US4858228 Communication system employing multi-conjunction architecture
08/15/1989US4858222 Circuit arrangement for serial data transmission
08/15/1989US4858112 Interface comprising message and protocol processors for interfacing digital data with a bus network
08/15/1989CA1258511A1 Alternate routing arrangement
08/15/1989CA1258507A1 Collision detection arrangement for daisy chain configurations
08/15/1989CA1258492A1 Constant carrier watchdog
08/10/1989WO1989007377A1 Communications network state and topology monitor
08/09/1989EP0203165A4 Queueing protocol.
08/09/1989CN1034648A Group exchange equipment
08/08/1989US4855999 DTDM multiplexer with cross-point switch
08/08/1989US4855998 Stand-alone transmission controller
08/08/1989US4855997 Priority queuing technique for content induced transaction overlap (CITO) communication system
08/08/1989US4855995 Method and system for data transmission
08/08/1989US4855993 Method and apparatus for detecting a fault in a ring network data transmission system
08/08/1989US4855729 Communication control system of fluid control valve
08/02/1989EP0326263A2 Data conferencing arrangement
08/01/1989CA1258113A1 Packet switching network with multiple packet destinations
07/1989
07/27/1989WO1989005076A3 Apparatus and method for a secure and diagnosable antijabber communication circuit
07/27/1989DE3829051A1 Terminal identification control circuit
07/27/1989DE3801607A1 Through-connecting device to through-connect the communications channels in the node points of a meshed network
07/26/1989EP0325455A2 Intercommunication method and system thereof
07/26/1989EP0325080A1 Protocol and apparatus for the selective scanning of a plurality of lines connected to a communication device
07/26/1989EP0324846A1 Apparatus and method for storing performance parameters of local area network system members
07/26/1989EP0205563B1 System for selectively coupling a plurality of data stations into a single communications path
07/25/1989US4852127 Universal protocol data receiver
07/25/1989US4852091 High capacity communication system utilizing OR-type channels
07/25/1989US4852088 Packet-at-a-time reporting in a data link controller
07/25/1989US4852083 Digital crossbar switch
07/25/1989US4852041 Interface converter
07/25/1989US4850514 Constant pressure intermittent fluid dispenser
07/24/1989EP0308449A4 Transfer of messages in a multiplexed system.
07/19/1989EP0324277A2 Distributed load sharing
07/19/1989EP0324012A1 Shorted-coaxial-cable detector for local-area networks.
07/18/1989US4850047 Optical bus communication system utilizing frame format signals
07/18/1989US4850042 Dual media local area network interfacing
07/18/1989US4849969 Implementation of smoothing apparatus for an independently clocked network
07/18/1989US4849968 Buffer management system
07/18/1989US4849965 Asynchronous digital time-division multiplexing system with distributed bus
07/18/1989US4849962 Communications control unit
07/18/1989CA1257718A1 Remote digital carrier alarm and terminal by-pass system
07/18/1989CA1257654A1 Wireless local area network for use in neighborhoods
07/13/1989DE3744508A1 Simulator for a data network system
07/12/1989EP0323928A1 Data packets switching device and method
07/12/1989EP0323835A2 Packet concentrator and switch including a controller for assigning priorities to space switch input terminals for control of buffers
07/12/1989EP0323488A1 Device for potential-free transmission of digital signals in serial networks with bitwise arbitration
07/12/1989EP0144351B1 System for switching multirate digitized voice and data
07/11/1989US4847837 Local area network with fault-checking, priorities and redundant backup
07/11/1989US4847835 Process and device for the transmission of messages between different stations through a location distribution network
07/11/1989US4847834 Local area network
07/11/1989US4847830 Method and apparatus for automatic loading of a data set in a node of a communication network
07/11/1989US4847613 Data transfer apparatus
07/11/1989US4847611 Ring configuration of line concentrators
07/11/1989US4847610 Method of restoring transmission line
07/11/1989CA1257399A1 Local area network for digital data processing system
07/11/1989CA1257355A1 Circuit arrangement for the transmission of binary signals
07/06/1989DE3743686A1 Circuit arrangement for reordering characters, in particular binary characters, of a block
07/05/1989EP0323310A1 Management circuit of buffer files write pointers, especially for a time-division switching system with self-routing packets
07/05/1989EP0322897A2 Simultaneous data and electric power transmitting/receiving system
07/04/1989US4845710 Dynamic buffer supervising system for a data link access protocol control
07/04/1989US4845709 Data transfer control system
07/04/1989US4845706 Switch configured network
07/04/1989US4845704 Switching system for integrated voice/data communications
07/04/1989US4845702 Optical telecommunication package switching system using asynchronous techniques
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