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)
10/1990
10/03/1990CN1009891B Wireless network for wideband communications
10/03/1990CA2013644A1 Method and device for accessing a communication medium shared by users whom can communicate in circuit or packet mode with different priority levels
10/02/1990US4961188 Synchronous frequency encoding technique for clock timing recovery in a broadband network
09/1990
09/30/1990CA2012368A1 Communications systems
09/29/1990WO1990011571A1 Simulated live market trading system
09/29/1990CA2029871A1 Method and apparatus for market trading
09/26/1990EP0389097A2 Photonic local/metropolitan area network
09/26/1990EP0388951A2 Call control with transmission priority in a packet communication network of an ATM type
09/26/1990EP0388687A1 Method of exchanging data
09/26/1990EP0388672A1 Method of data packet transfer
09/26/1990EP0388648A2 Cell switching system for the time division multiplex communication
09/26/1990EP0388574A1 Method and apparatus for distributed queue multiple access in a communication system
09/26/1990EP0388511A2 Method for data transfer
09/26/1990EP0388441A1 Apparatus and Method for a secure and diagnosable Antijabber Communication.
09/26/1990EP0388436A1 Network and intelligent cell for providing sensing, bidirectional communications and control.
09/26/1990EP0219549B1 Loop transmission system with frame synchronization control
09/26/1990EP0172884B1 Multipriority communication system
09/26/1990CN1045676A Communication switching system
09/25/1990US4959843 Content induced transaction overlap (CITO) block transmitter
09/25/1990US4959829 Dual cable communication system
09/21/1990CA2012629A1 Process for transferring data packets
09/21/1990CA2012209A1 Method of exchanging data
09/20/1990WO1990010984A1 Communication switching system
09/20/1990WO1990005422A3 Digital image processing and display system
09/19/1990EP0388162A2 Apparatus for market trading
09/19/1990EP0387958A1 Method of ATD (asynchronous time division) switching of data packets and an arrangement for implementing this method
09/19/1990EP0387244A1 Arrangement for testing packet switching networks.
09/19/1990CN1045499A Remote loop adapter
09/18/1990US4958342 Adaptive digital network interface
09/18/1990US4958341 Integrated packetized voice and data switching system
09/18/1990CA1274304A1 Crosspoint circuitry for data packet space division switches
09/18/1990CA1274303A1 N-by-n "knockout" switch for a high-performance packet switching system with variable length packets
09/18/1990CA1274302A1 Mesh-based switching network
09/15/1990WO1990010910A1 Simulated pit trading system
09/15/1990CA2029893A1 Method and apparatus for auction market trading
09/13/1990DE4000932A1 Altering bit error rate - inputs errors or changing connections to prevent system abuse
09/12/1990EP0386802A1 Apparatus for interfacing a computer station with a communication network
09/12/1990EP0386011A1 System for the automatic notification of message reception in an electronic messaging system
09/12/1990CN1045318A Local area network communication system
09/12/1990CN1009605B Information transmitting device
09/11/1990US4956852 Method for remote configuration of a modem
09/11/1990US4956850 Digital electronic system
09/11/1990US4956841 Method and device for switching a packet of data
09/11/1990US4956839 ATM switching system
09/11/1990US4956836 Automatic bypass system for ring type local area network
09/11/1990US4956771 Method for inter-processor data transfer
09/07/1990WO1990010345A1 Star data network with logical ring function preferably using token access
09/07/1990WO1990008437A3 Coupling of a bus subscriber
09/06/1990DE3906467A1 Method of controlling equidistant messages in serial bus systems with token passing access
09/05/1990EP0385695A2 Communication system
09/05/1990EP0385431A2 Polling communication system
09/05/1990EP0385429A2 Self-routing switching system having dual self-routing switch module network structure
09/05/1990EP0385127A2 Communication network with switchable network nodes
09/05/1990EP0384936A1 Method and circuit arrangement for forwarding information packets from incoming links via a packet-switching device
09/05/1990CN1045206A Method and apparatus for visiting distributed communication network
09/04/1990US4955021 Efficient connection arrangements for multihop networks
09/04/1990US4955020 Bus architecture for digital communications
09/04/1990US4955017 Growable packet switch architecture
09/04/1990US4955016 Interconnect fabric providing connectivity between an input and arbitrary output(s) of a group of outlets
09/04/1990US4955015 Self-controlled concentrator operating packet-synchronized for fast data packet switching networks
09/04/1990US4954965 Enhanced frame utilization for CSMA/CD communication protocol
09/04/1990US4954821 Method of establishing transmission group numbers for network links
09/04/1990CA1273697A1 Multiplexed digital packet telephone system
09/04/1990CA1273691A1 Circuit arrangement for serial data transmission between a plurality of subscriber stations
09/04/1990CA1273690A1 Circuit arrangement for serial data transmission between a plurality of subscriber stations
08/1990
08/31/1990CA2009713A1 Local area network communication system
08/31/1990CA2005271A1 Broadcast station locator for a local area network
08/29/1990EP0384847A1 Method and device to gain access to an extended area network
08/29/1990EP0384758A2 Call admission control method and cell flow monitoring method in the same method
08/29/1990EP0384259A2 Loop communication network
08/29/1990EP0384078A2 Network and protocol for real-time control of machine operations
08/29/1990EP0383986A1 Method and arrangement for the transmission of data between a central data station and a plurality of data terminal devices in the local area
08/29/1990EP0383946A1 Series control apparatus
08/29/1990EP0383925A1 Device for detecting the position of a broken line in a serial control system
08/29/1990EP0203990B1 Self-routing packets with stage address identifying fields
08/29/1990CN1009411B Group exchange equipment
08/28/1990US4953194 Automated documentation system for a communications network
08/28/1990US4953162 Multipath local area network
08/28/1990US4953159 Arrangements for processing different categories of messages
08/28/1990US4953158 Switch system for circuit and/or packet-switched communications
08/28/1990US4953157 Programmable data packet buffer prioritization arrangement
08/28/1990US4952930 Multipath hierarchical network
08/28/1990CA1273433A1 Diagnostic system
08/24/1990CA2010810A1 Time synchronization of control networks
08/24/1990CA2002782A1 Communication network
08/23/1990WO1990009724A1 A data transmission system
08/23/1990WO1990009714A1 Supervised, interactive alarm reporting system
08/23/1990WO1990009711A1 A device for shortening a distributed queue
08/23/1990WO1990009710A1 Star-shaped network for data communication between stations
08/23/1990WO1990009631A1 Process for monitoring a computer network
08/23/1990CA2010716A1 Method and apparatus for accessing a distributed communications network
08/22/1990EP0383660A1 Rate reservation in an asynchronous packet network
08/22/1990EP0383557A1 Network clock synchronisation
08/22/1990EP0383291A1 Transmission failure diagnosis apparatus
08/22/1990EP0383264A1 Method and apparatus for testing station address in network
08/22/1990EP0382794A1 Network interface.
08/21/1990US4951281 Multiplex transmission system
08/21/1990US4951280 Method and apparatus for configuring data paths within a supernet station
08/21/1990CA1273118A1 Method of access to a local area network with a unidirectional ring transmission line, and local area network using said access method
08/16/1990EP0382668A2 Method for enhancing frame utilization in a CSMA/CD communication
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