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)
06/1988
06/21/1988US4752777 Delta network of a cross-point switch
06/21/1988CA1238402A1 Digital switching network for switching signals of different bit rates
06/21/1988CA1238383A1 Local area network station connector
06/16/1988WO1988004512A1 Stabilized binary tree protocol
06/16/1988WO1988004511A1 Input/output network for computer system
06/16/1988WO1988004499A1 Data communications network
06/16/1988WO1988004497A1 Hf data communications system with network management
06/16/1988EP0142551A4 Variable bandwidth switching system.
06/16/1988EP0141852A4 Integrated voice/data/control switching system.
06/15/1988EP0271179A2 Daisy chain collision detection circuit
06/15/1988EP0270604A1 Message delivery system and method.
06/15/1988CN85107302B Apparatus for establishing communication paths
06/14/1988US4751701 TDM collision detector
06/14/1988US4751700 Method and apparatus for local area communication networks
06/14/1988US4751697 Distributed packet switching sytem
06/14/1988US4751574 Electronic apparatus control system
06/14/1988US4751510 Method and system for controlling a network of modems
06/14/1988CA1238131A1 Control circuit for an adaptive hybrid control in a local area network
06/08/1988EP0270471A1 Packet switching system
06/08/1988EP0270391A1 Control method for the retransmission of messages from transmitting stations belonging to a cellular system
06/08/1988EP0270216A2 Dynamic frame length communication system, and stations for such a system
06/08/1988EP0269978A2 Network adapter for connecting local area network to backbone network
06/08/1988EP0112338B1 Time stamping for a packet switching system
06/07/1988US4750175 Network diagnostic apparatus and method
06/07/1988US4750171 Data switching system and method
06/07/1988US4750150 I/O scanner for an industrial control
06/07/1988US4750135 Method for dynamically creating a receiver definable local trading instrument displayable record from a remotely transmitted trading instrument common data stream
06/07/1988US4750114 Local area network control block
06/07/1988US4750109 Method and system for expediting multi-packet messages in a computer network
06/07/1988CA1237816A1 Detector of predetermined patterns of manchester encoded data
06/07/1988CA1237803A1 Communication network system
06/07/1988CA1237802A1 Multiplexed interconnection of packet switching node packages
06/07/1988CA1237799A1 Lockup detection and recovery in a packet switching network
06/02/1988WO1988004120A1 Arrangement for testing packet switching networks
06/01/1988EP0269423A2 Local area network exchange
06/01/1988EP0269418A2 Optical signal recovery
06/01/1988EP0269376A2 A token passing scheme for a predetermined configuration local area network
06/01/1988EP0269202A2 A communication system
06/01/1988EP0268664A1 A method of coupling a data transmitter unit to a signal line and an apparatus for performing the invention.
06/01/1988EP0124590B1 Duplicated network arrays and control facilities for packet switching
06/01/1988EP0114882B1 Digital communication system and control method
06/01/1988EP0112336B1 An interface facility for a packet switching system
06/01/1988EP0086223B1 A local area communication network
05/1988
05/31/1988US4748660 Process for determination of the last intermediate node in a network of numerous interconnected nodes
05/31/1988US4748637 Digital subscriber loop termination device
05/31/1988US4748620 Time stamp and packet virtual sequence numbering for reconstructing information signals from packets
05/31/1988US4748618 Telecommunications interface
05/31/1988US4748617 Very high-speed digital data bus
05/31/1988EP0138949A4 A wideband digital switching network.
05/26/1988EP0138950A4 A distributed prioritized concentrator.
05/25/1988EP0268259A2 Switching element for self-routing multistage packet-switching interconnection networks
05/24/1988US4747115 Bus-redundancy type apparatus for a transmitting system
05/24/1988US4747101 Method of determining optimal transmission channel in multi-station communications system
05/24/1988US4747100 Token passing network utilizing active node table
05/24/1988US4747097 Multiplex transmission system
05/24/1988CA1237187A1 Wide band integrated services local communication system
05/24/1988CA1237186A1 Digital timeslot and signaling bus in a digital pbx switch
05/24/1988CA1237185A1 Integrated packet switching and circuit switching system
05/19/1988WO1988003732A1 Data switching arrangement
05/17/1988US4745600 Network collision detection and avoidance apparatus
05/17/1988US4745599 Random access communication system with contention scheduling of subpacketized data transmissions and scheduled retransmission of unsuccessful subpackets
05/17/1988US4745598 Method and apparatus for maintaining a dynamic logical ring in a token passing LAN
05/17/1988US4745597 Reconfigurable local area network
05/17/1988US4745596 Multiplex communication system
05/17/1988US4745595 Distributed electronic mailbox system
05/17/1988US4745593 Arrangement for testing packet switching networks
05/11/1988EP0266770A2 Loop transmission system and data transmission control method
05/11/1988EP0266530A2 A method of controlling a multi-stage interconnection network
05/11/1988EP0144403B1 Method and device for the transfer of data in a data loop
05/10/1988US4744079 Data packet multiplexer/demultiplexer
05/10/1988US4744078 Multiple path multiplexed host to network data communication system
05/10/1988US4744077 Link flow control in time slot protocol data transmission of a data processing network
05/10/1988US4744076 Bus structure having constant electrical characteristics
05/10/1988US4743968 Electronic apparatus control system
05/04/1988EP0266151A2 Method and apparatus for coupling computer work stations
05/04/1988EP0266126A2 High speed digital trunk interface and method of using same
05/04/1988EP0164411B1 Peak load access in a two-way, e.g. catv contention system
05/03/1988US4742572 Optical fiber data link system
05/03/1988US4742512 Multipoint communication system having polling and reservation schemes
05/03/1988US4742511 Method and apparatus for routing packets in a multinode computer interconnect network
05/03/1988US4742484 Data transmission apparatus having two unidirectional transmission connection lines transmitting data from slave stations located downstream to a master station at high speed
05/03/1988US4742456 Sound responsive tube control circuit
05/03/1988US4742349 In a communication system
04/1988
04/27/1988EP0265106A2 Method and apparatus for a packet-switched network communications measurement matrix display
04/26/1988US4740958 Data transmission system
04/26/1988US4740956 Linear-space signalling for a circuit-switched network
04/26/1988US4740954 Multicast routing algorithm
04/21/1988WO1988002961A1 Batcher-banyan packet switch with output conflict resolution scheme
04/21/1988WO1988002959A1 Method for transmitting data in packet switching networks
04/19/1988US4739324 Method for serial peripheral interface (SPI) in a serial data bus
04/19/1988US4739323 Serial data bus for serial communication interface (SCI), serial peripheral interface (SPI) and buffered SPI modes of operation
04/19/1988US4739321 Decentralized line reservation interface within a local data network
04/19/1988CA1235523A1 Method for transmitting digital data and network and module using said method
04/19/1988CA1235468A1 Process for the determination of the ultimate intermediate node in a system comprised of several interconnected modes
04/14/1988DE3733680A1 Message transmission system
04/14/1988DE3733650A1 System and process for message transmission
04/13/1988EP0263421A2 Multipoint data communication with a supervisory system for detecting a malfunctioning remote station
04/12/1988US4737957 Method of processing abnormal situation in digital transmission system
04/12/1988US4737953 Local area network bridge
04/12/1988US4737783 Emergency access method in centralized monitoring system
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