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)
08/1990
08/16/1990EP0381878A1 Network diagnosis apparatus and method
08/16/1990EP0381868A1 Method and system for transmitting buffered data packets on a communications network
08/15/1990CN1044745A Asynchronous time division switching arrangement and method of operating same
08/14/1990US4949359 Method for the electronic transmission of data and installation for carrying out this method
08/14/1990US4949340 Redundant repeater
08/14/1990US4949337 Token passing communication network including a node which maintains and transmits a list specifying the order in which the token is passed
08/14/1990US4949336 Multi-slot access system
08/14/1990US4949334 Protected information transfer system
08/14/1990US4949333 Enhanced universal asynchronous receiver-transmitter
08/14/1990US4949272 Flexible billing rate for mail communication systems
08/14/1990US4949083 Communication system
08/14/1990CA1272807A1 Peripheral bus
08/11/1990WO1990009712A1 Network system for data transmission
08/11/1990CA2046297A1 Network system for data transmission
08/09/1990WO1990009068A1 Improved deterministic timed bus access method
08/09/1990WO1990009065A1 Multiplexed synchronous/asynchronous data bus
08/09/1990CA2009632A1 Data transmission system
08/08/1990EP0381386A2 Token passing communication network
08/08/1990EP0381385A2 Detector for colliding signals in asynchronous communication
08/08/1990EP0381275A1 Method for transmitting, via a plurality of asynchronously time-divided transmission channels, a flow of data cells, the state of a counter for each transmission channel being kept up to date in accordance with the number of data cells per unit of time
08/08/1990EP0380680A1 Series controller
08/07/1990US4947390 Method for data transfer through a bridge to a network requiring source route information
08/07/1990US4947389 Multi-channel ring architecture for distributed networks
08/07/1990US4947388 Cell switching system of asynchronous transfer mode
08/07/1990US4947387 Switching node for switching data signals transmitted in data packets
08/07/1990US4947385 Monitoring system for a local bus network in a star structure
08/07/1990US4947162 Terminal device for a monitoring and control system
08/01/1990EP0380378A1 Method and device for the hierarchical access to an information transmission network
08/01/1990EP0380368A2 Cell switching system
08/01/1990EP0380141A2 Local area network for digital data processing system
07/1990
07/31/1990US4945532 Local network testing using carrier sense multiple access and collision detection (CSMA/CD)
07/30/1990CA2005106A1 Detector for colliding signals in asynchronous communication
07/26/1990WO1990008437A2 Coupling of a bus subscriber
07/26/1990WO1990008418A1 Method and arrangement for controlling electrical devices
07/26/1990WO1990004297A3 Local area network modem
07/26/1990DE3901589A1 Ankopplung eines busteilnehmers Coupling a bus user
07/25/1990EP0378804A2 NETBIOS name authentication
07/25/1990CN1008962B Subscriber rf telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of rf channels
07/24/1990US4944038 Method and apparatus for utilization of dual latency stations for performance improvement of token ring networks
07/24/1990US4943979 Local access network signal regnerator
07/24/1990US4943959 Data packet switching
07/24/1990US4943926 Method for the analysis and synthesis of binary signals
07/18/1990EP0378195A2 Buffer device suitable for asynchronous transfer mode communication
07/18/1990EP0378018A1 Registration method for a station in a network partly constituted by an open channel
07/18/1990EP0241529B1 Communications network
07/18/1990EP0150540B1 Method for data communication as well as a station for carrying out the method
07/18/1990CN1008875B Control system for interunit communication
07/17/1990US4942574 Concurrent resource request resolution mechanism
07/17/1990US4942572 Process and device for high speed polling
07/17/1990US4942569 Congestion control method for packet switching apparatus
07/17/1990US4942515 Serial communications controller with FIFO register for storing supplemental data and counter for counting number of words within each transferred frame
07/12/1990WO1990007849A1 Communication adapter
07/12/1990WO1990007832A1 Communication switching system
07/12/1990WO1990007830A1 Dynamic network reconfiguration technique for directed-token expanded-address lan
07/11/1990EP0377361A1 Optimization method for the authorization release of access to a network constituted by open channels
07/11/1990EP0377360A1 Packet-routing method in a network with a plurality of different transmission channels
07/11/1990CN1043843A Communication switching system
07/10/1990US4941206 Loop-type optical fiber transmission system having master and slave apparatus
07/10/1990US4941170 Facsimile transmissions system
07/10/1990US4941142 Frame erasing method for token ring networks without last frame indication within the frame format
07/10/1990US4941089 Input/output network for computer system
07/10/1990US4940974 Multiterminal communication system and method
07/10/1990CA1271548A1 Distributed switching architecture
07/05/1990DE3844395A1 Token passing access without configuring the network
07/04/1990EP0376869A2 Method of allowing the transmission of electronic messages between ennrolled and unenrolled users of computer systems
07/04/1990EP0376597A2 Packet selection for packet distribution arrangements
07/04/1990EP0376545A2 Automated message retrieval system
07/04/1990EP0376513A2 Communication network and protocol for real-time control of mailing machine operations
07/04/1990EP0376101A2 Access device for an ISDN connection of a public terminal
07/04/1990EP0210213B1 Radio pager with error detection
07/04/1990CN1043596A Electronic system for packet switching
07/03/1990US4939753 Time synchronization of control networks
07/03/1990US4939745 Apparatus for generating orthogonal sequences
07/03/1990US4939730 Data communications system
07/03/1990US4939728 Network and intelligent cell for providing sensing bidirectional communications and control
07/03/1990US4939726 Method for routing packets in a packet communication network
07/03/1990US4939725 Multiplex transmission system
07/03/1990US4939724 Cluster link interface for a local area network
07/03/1990US4939721 Node for a fast packet-switching network in optical-electrical technology
07/03/1990US4939720 Unit for switching data transmitted by asynchronous time-division multiplexing
07/03/1990US4939719 Management unit for a unit for switching data transmitted by asynchronous time-division multiplexing
07/03/1990US4939718 Routing method and packet switching networks having a distance indicator for routing
07/03/1990US4939510 Broadband communications RF packet collision detection
07/03/1990US4939509 Data conferencing arrangement for stations having keyboards and displays, using a keyboard buffer and a screen buffer
06/1990
06/28/1990WO1990007241A1 Process for routing messages in a network having several different transmission channels
06/28/1990WO1990007240A1 Process for optimizing access to a network comprising shared channels
06/28/1990WO1990007239A1 Process for registering a device in a network of which a part at least consists of a shared channel
06/27/1990EP0375664A2 Local area network for digital data processing system
06/27/1990EP0375456A2 Method for managing an electronic mail basket service
06/27/1990EP0375249A2 Self routing packet switching network architecture
06/27/1990EP0375243A1 Packet network timing analyzer
06/27/1990EP0375143A2 Shared object status indicating
06/27/1990EP0375139A2 Classified document transmission control
06/27/1990EP0375138A2 Restricting electronic message traffic
06/27/1990EP0374928A2 Packet congestion control method and packet switching equipment
06/27/1990EP0374883A2 System for internetwork communication between local area networks
06/27/1990EP0374683A2 Contention method for communication networks
06/27/1990EP0374670A1 Self-repairing device for a ring connection
06/27/1990EP0374578A2 Modular expandable single stage digital ATM switching network for high speed packet-switched information transfer
06/27/1990EP0374574A2 Modular expandable single stage digital ATM switching network for high speed packet-switched information transfer
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