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)
08/1988
08/30/1988US4768204 Method and apparatus for transmitting signals between a master station and a number of terminals
08/30/1988US4768190 Packet switching network
08/30/1988US4768189 High capacity communication utilizing static, OR-type channels
08/30/1988CA1241470A1 High speed automatic test apparatus especially electronic directory terminals
08/24/1988EP0279627A2 Communication apparatus
08/24/1988EP0279571A1 A wideband/multislot switching arrangement
08/24/1988EP0279443A2 Header driven packet switching system and method
08/24/1988EP0200721B1 Arrangement for communication between equipment belonging to different network architectures
08/24/1988EP0166734B1 Adaptive preferential flow control for packet switching system
08/24/1988EP0164406B1 Fast circuit switching system
08/23/1988US4766601 Constant carrier watchdog
08/23/1988US4766596 Method and circuit arrangement for the transmission of data signals between control devices connected to one another via a loop system
08/23/1988US4766594 Digital network system having arrangement for testing digital subscriber line
08/23/1988US4766591 Random multiple-access communication system
08/23/1988US4766590 Loop transmission system having plural stations connected in a variable order
08/23/1988US4766530 Token passing scheme for a predetermined configuration local area network
08/23/1988CA1241084A1 Bidirectional bus arrangement for a digital communication system
08/17/1988EP0277952A1 Procedure and device to determine data transmission rate and signal distortion of synchronous and asynchronous serial data transmission lines
08/17/1988CN88100083A Control system for interunit communication
08/16/1988US4764939 Cable system for digital information
08/16/1988US4764920 Packet transmission system
08/16/1988US4764919 Virtual PBX call processing method
08/16/1988US4764849 Data bus distribution apparatus
08/16/1988CA1240750A1 Communication network having gain adjustment function of a transmission amplifier of medium attachment unit
08/16/1988CA1240743A1 System for selectively coupling a plurality of stations into a single communications path
08/11/1988WO1988005982A2 Self-routing switching system
08/10/1988EP0277202A1 Data processing network.
08/09/1988US4763329 Modular data routing system
08/09/1988US4763325 Demand assigned reformatting with an overflow area for time division multiple access communication
08/09/1988US4763323 Communication system for the transfer of small digital message blocks and large digital message blocks
08/09/1988US4763321 Dynamic bandwidth allocation mechanism between circuit slots and packet bit stream in a communication network
08/09/1988US4763320 Method and arrangement for transmitting data, especially in an aircraft
08/09/1988US4763319 Multi-rate synchronous virtual circuit network for voice and data communications
08/09/1988US4763317 Digital communication network architecture for providing universal information services
08/09/1988US4763315 Ring communication network system and a method for controlling same
08/09/1988US4763254 Information processing system with data storage on plural loop transmission line
08/03/1988EP0276776A2 Digital switching network for circuit and packet switching, and switching matrix element therefor
08/03/1988EP0276468A1 Data transmission control method
08/03/1988EP0276349A1 Apparatus for switching information between channels for synchronous information traffic and asynchronous data packets
08/03/1988CN87106122A Lan controller proprietary bus
08/02/1988US4761832 Fiber optic switching network
08/02/1988US4761799 Time-locking method for stations which form part of a local star network, and local star network for performing the time-locking method
08/02/1988US4761781 Adaptative packet/circuit switched transportation method and system
08/02/1988US4761780 Enhanced efficiency Batcher-Banyan packet switch
08/02/1988US4761779 Subscriber's line switching control system
08/02/1988US4761778 Coder-packetizer for random accessing in digital communication with multiple accessing
08/02/1988US4761646 Method and system for addressing and controlling a network of modems
08/02/1988CA1240083A1 Computer access security device
08/02/1988CA1240082A1 Baseband local area network using ordinary telephone wiring
08/02/1988CA1240022A1 Self-routing packets with stage address identifying fields
07/1988
07/27/1988EP0276076A2 Digital signal switch
07/27/1988EP0275679A1 Packet switching system arranged for congestion control
07/27/1988EP0275678A1 Packet switching system arranged for congestion control through bandwidth management
07/27/1988EP0275464A1 Emitter-receiver device for a bus system
07/26/1988US4760573 Multiplex interface for a communication controller
07/26/1988US4760572 Limited multicast communication method and communication network system realizing the method
07/26/1988US4760571 Ring network for communication between one chip processors
07/26/1988US4760570 N-by-N "knockout" switch for a high-performance packet switching system
07/26/1988US4760488 Transmission control apparatus for duplex loop type transmission system
07/26/1988US4760395 Arrangement for communications between equipment belonging to different network architectures
07/26/1988CA1239686A1 Multiphase packet switching system
07/26/1988CA1239678A1 Method and apparatus for bridging local area networks
07/26/1988CA1239666A1 Optical fiber data link system
07/20/1988EP0275086A2 In-line coupling circuit for a closed-loop communication terminal
07/20/1988EP0275076A2 Control system for communication between units
07/20/1988EP0274793A1 Packet switching network
07/20/1988EP0274709A2 Packet switch network protocol
07/20/1988EP0274679A1 Emitter-receiver device for a bus system
07/20/1988CN87107876A Data switching arrangement
07/19/1988US4759017 Telecommunications exchange allocating variable channel bandwidth
07/19/1988US4759015 Ring network system for transmission of multicast information
07/19/1988US4759011 Intranetwork and internetwork optical communications system and method
07/19/1988US4759009 Remote digital carrier alarm and terminal by-pass system
07/19/1988US4758981 Signal sorting element with internal signal address value sorting criterion
07/13/1988CN87103871A 话音和数据通信系统 Voice and data communications systems
07/12/1988US4757497 Local area voice/data communications and switching system
07/12/1988US4757460 Communications network with individualized access delays
07/12/1988US4757371 Still picture transmission apparatus
07/07/1988DE3643767A1 Store and forward switching centre and method for its operation
07/06/1988EP0273080A1 Process and device for high speed polling
07/05/1988US4756006 Bus transceiver
07/05/1988US4755991 Ring shaped digital communication system and method for accessing a message channel in such system
07/05/1988US4755990 Collision avoidance in a multinode data communication network
07/05/1988US4755988 Data communications switching device having multiple switches operating at plural selectable data rates
07/05/1988US4755986 Packet switching system
07/05/1988CA1238969A1 Distributed packet switching system
07/05/1988CA1238961A1 Data communication network
06/1988
06/30/1988WO1988004870A1 Enhanced efficiency batcher-banyan packet switch
06/30/1988WO1988004869A1 Packet switching network
06/30/1988DE3643979A1 Deterministic access method based on the token principle for data transmission
06/30/1988DE3643834A1 Method for two-way transmission of digital signals
06/29/1988EP0272939A2 Dynamic buffer supervising system for a data link access protocol control
06/29/1988EP0272834A2 Inter-processor communication protocol
06/29/1988EP0272271A1 Process and related device for remote-controlled switching-on of terminal equipments used in data transmission and tele-processing.
06/28/1988US4754451 N-by-N "knockout" switch for a high-performance packet switching system with variable length packets
06/28/1988US4754273 System for controlling network activation sequence
06/28/1988CA1238704A1 Data transmission apparatus
06/23/1988DE3700293A1 Sending and receiving device for a bus line system
06/23/1988DE3700284A1 Sending and receiving device for a bus line system
06/21/1988US4752924 Data communication network
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