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)
11/1987
11/17/1987US4707831 Packet switching system
11/17/1987US4707830 Token passing LAN using a plurality of tokens
11/17/1987US4707829 CSMA-CD with channel capture
11/17/1987US4707828 Multiaccess communication system
11/17/1987US4707827 Bridging techniques for local area networks
11/17/1987US4707826 Circuit and packet data transmission system
11/17/1987US4707825 Methods of installing and assigning control processors in a distributed-control communications system
11/17/1987US4707693 Through-traffic priority protocol in a communications system
11/11/1987EP0244775A2 Ring network system and configuration control method
11/11/1987EP0244443A1 Communication network for multiprocessor packet communication
11/10/1987US4706247 Data transmission apparatus
11/10/1987US4706246 Digital signal transmission system
11/10/1987US4706245 Network system
11/10/1987US4706240 Switching system having multiple parallel switching networks
11/10/1987US4706150 Switching protocal for multiple autonomous switching planes
11/10/1987US4706082 Serial data bus for intermodule data communications
11/10/1987US4706081 Method and apparatus for bridging local area networks
11/10/1987US4706080 Interconnection of broadcast networks
11/10/1987CA1229183A1 Input/output multiplexer-demultiplexer communications channel
11/10/1987CA1229137A1 Speed independent selector switch employing m-out-of- n codes
11/04/1987EP0244386A2 A device for transmitting digital information via a long distance transmission medium
11/04/1987EP0244251A2 Packet switching network
11/04/1987EP0243692A2 Distributed voice-data switching on multi-stage interconnection networks
11/04/1987EP0243590A2 Method and apparatus for establishing a limited broadcast path within an interconnection network
11/04/1987EP0243563A1 Non coded information and companion data switching mechanism
11/03/1987US4704716 Method and apparatus for establishing a wideband communication facility through a communication network having narrow bandwidth channels
11/03/1987US4704714 Method of detecting recovery from fault in a data transmission system which effects loopback control
11/03/1987US4704606 Variable length packet switching system
10/1987
10/29/1987DE3613898A1 Communication system having a number of subscriber stations accessing a common transmission network
10/28/1987EP0243297A2 Method for data flow control in a meshed data network
10/28/1987EP0243291A2 Improvements in a new simultaneous voice and data communication system, with possibility of connection to public or private networks
10/28/1987EP0242765A2 Method and arrangement for information transmission in multicomputer systems using a hierarchical transmission network
10/28/1987EP0242764A2 Method and arrangement for the decentralized transfer of the master function in multicomputer systems with a looped transmission channel
10/27/1987US4703486 Communication data encoder/decoder component system architecture
10/27/1987US4703478 Burst-switching method for an integrated communications system
10/27/1987US4703477 Packet information field data format
10/27/1987US4703474 Spread spectrum code-division-multiple-access (SS-CDMA) lightwave communication system
10/27/1987US4703473 Serial network architecture for user oriented devices
10/27/1987US4703451 Data relay system
10/27/1987US4702600 Method and apparatus for measuring angular rate with a passive optical resonator
10/27/1987EP0209527A4 Method of communications between register-modelled radio devices.
10/22/1987WO1987006379A1 Process and device for data transmission
10/22/1987DE3613183A1 Device for monitoring data traffic on a bus system
10/21/1987EP0242142A2 System for adjusting signal transmission timing to prevent signal collisions
10/21/1987EP0241529A1 Communications network.
10/20/1987US4701946 Device for controlling the application of power to a computer
10/20/1987US4701911 Media accessing apparatus and method for communication system
10/20/1987US4701910 Reliable local area network including active stations
10/20/1987US4701909 Collision detection technique for an optical passive star local area network using CSMA/CD
10/20/1987US4701908 Network system utilizing plural station addresses
10/20/1987US4701906 Packet switching network with multiple packet destinations
10/20/1987US4701905 Local area network system utiliziing a code division multiple access method
10/20/1987US4701904 Optical local area network employing microwave modulation techniques
10/20/1987US4701756 Fault-tolerant hierarchical network
10/20/1987US4701755 Data switching system
10/20/1987US4701630 Local area network station connector
10/20/1987CA1228435A1 Method and system of transmitting digital information in a transmission ring
10/20/1987CA1228414A1 Variable band distributed switching node with dynamic hybrid frame management
10/15/1987DE3611949A1 Datenuebertragungsverfahren und datenuebertragungsvorrichtung Datenuebertragungsverfahren and datenuebertragungsvorrichtung
10/14/1987EP0241324A2 Data transmission method and device
10/14/1987EP0241229A2 A fast assignment technique for use in a switching arrangement
10/14/1987EP0241152A2 Automatic telecommunication switching system
10/14/1987EP0241113A2 Traffic scheduler for multiple access communication channels
10/14/1987EP0241018A2 Method of multi-address communication
10/14/1987EP0240577A1 Interface unit between a redundant dual bus and a data-processing unit
10/13/1987US4700344 Processor overrun circuit
10/13/1987US4700343 Method and device for module contention to non-dedicated common line
10/13/1987US4700340 Method and apparatus for providing variable reliability in a telecommunication switching system
10/13/1987US4700185 Request with response mechanism and method for a local area network controller
10/13/1987US4700021 Circuit arrangement for the transmission of data signals between control devices connected to one another via a loop system
10/13/1987US4700020 Method and circuit arrangement for the transmission of data signals between control devices connected to one another via a loop system
10/13/1987US4700019 Method and circuit arrangement for the transmission of data signals to a group of control devices belonging to a loop system
10/13/1987US4700018 Method and circuit arrangement for the transmission of data signals between two control devices belonging to a loop system
10/13/1987CA1228168A1 I/o scanner for an industrial control
10/13/1987CA1228145A1 Arrangement for routing data packets through a circuit switch
10/12/1987EP0137804A4 Data network interface.
10/07/1987EP0240245A2 Detection of direct current in the presence of data dignals
10/07/1987EP0240124A2 Lightwave communication system
10/07/1987EP0240119A2 Optical communications system and method
10/07/1987EP0239937A2 Serial communications controller
10/07/1987EP0239908A2 Wideband switching system
10/07/1987EP0239828A2 Method of access to a local area network with a unidirectional transmission line, and network using such method
10/07/1987EP0239618A1 Mesh-based switching network
10/07/1987EP0239567A1 Bandwidth efficient multipoint date communication system
10/06/1987US4698841 Methods of establishing and terminating connections in a distributed-control burst switching communications system
10/06/1987US4698804 Shared data transmission system
10/06/1987US4698803 Burst-switching communications system
10/06/1987US4698802 Combined circuit and packet switching system
10/06/1987US4698799 Link switch for a burst-switching communications system
10/06/1987CA1227859A1 Alternate paths in a self-routing packet switching network
10/06/1987CA1227857A1 Fast circuit switching system
09/1987
09/30/1987EP0238984A2 An interface circuit for interconnecting circuit switched and packet switched systems
09/30/1987EP0153328B1 Data conference arrangement
09/30/1987EP0116047B1 Multiplexed first-in, first-out queues
09/29/1987US4697268 Data processing apparatus with message acceptance monitoring
09/29/1987US4697263 Time slot arrangements for local area network systems
09/29/1987US4697047 Trunk coupling unit
09/29/1987CA1227556A1 Data signal switching systems
09/29/1987CA1227555A1 Adaptive preferential flow control for packet switching system
09/24/1987WO1987005768A1 Workstation for use with a digital image communications network
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