| Patents for H04L 12 - Data switching networks (448,999) |
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| 02/03/1988 | EP0254878A2 Packet data communication system with ring type transmission line |
| 02/02/1988 | US4723311 Method and apparatus for recognizing data collisions in an optical data bus |
| 02/02/1988 | US4723309 Optical network system of bus architecture capable of rapidly detecting collision at each communication station |
| 02/02/1988 | US4723269 Method and apparatus for power-up of unattended computer |
| 02/02/1988 | US4723241 Data transmission arrangement including a reconfiguration facility |
| 02/02/1988 | US4723239 Serial bus system and method for selection of bus subscribers |
| 02/02/1988 | US4723238 Interface circuit for interconnecting circuit switched and packet switched systems |
| 02/02/1988 | US4723208 System and method for communication between nodes of a closed loop local communication path |
| 02/02/1988 | US4723120 Method and apparatus for constructing and operating multipoint communication networks utilizing point-to point hardware and interfaces |
| 02/02/1988 | CA1232379A1 Digital link for telephone station sets |
| 02/02/1988 | CA1232346A1 Time division multiplexed computerized branch exchange |
| 01/28/1988 | EP0138951A4 A self routing steering network. |
| 01/27/1988 | EP0254473A2 Local area network with biasing arrangement for facilitating access contention between work stations connected to a common bus |
| 01/27/1988 | EP0254472A2 Data flow control arrangement for local area network |
| 01/27/1988 | EP0254471A2 A collision detection technique for an optical passive star local area network using csma/cd |
| 01/27/1988 | EP0254267A2 Agricultural machine with processor supported acquisition, processing and according of information |
| 01/27/1988 | EP0254047A2 Packet length traffic control in a local area network |
| 01/27/1988 | EP0253940A1 Method and system of routing data blocks in data communication networks |
| 01/27/1988 | EP0197930B1 Arrangement for path selection in a communications network |
| 01/21/1988 | EP0235257A4 Multiplexed digital packet telephone communication method. |
| 01/21/1988 | DE3622824A1 Method for data communication between two or more interconnected microprocessor systems and the circuit arrangement for carrying out the method |
| 01/20/1988 | EP0253381A2 Data transfer apparatus |
| 01/19/1988 | CA1231764A1 Industrial communications system |
| 01/13/1988 | CN87104377A Isdu d channel handler |
| 01/12/1988 | US4719625 Method of recovering from transmission errors in a local area network by transmitting and receiving silence on all network ports |
| 01/12/1988 | US4719620 Signal transmission system in a bus-type network |
| 01/12/1988 | US4719458 Method of data arbitration and collision detection in a data bus |
| 01/12/1988 | CA1231381A1 Communication network |
| 01/07/1988 | EP0251965A1 Data packet switching system |
| 01/07/1988 | EP0251593A2 Power source control system for data terminal equipment |
| 01/07/1988 | EP0251382A2 Packet radio |
| 01/07/1988 | EP0250951A2 Data communication system |
| 01/07/1988 | EP0250698A2 Method for information transmission between independent subscribers of a system via a serial interface, and arrangement for carrying out this method |
| 01/07/1988 | EP0102384B1 Bidirectional dual network |
| 01/05/1988 | US4718062 Telecommunication system for alternatingly transmitting circuit-switched and packet-switched information |
| 01/05/1988 | US4718061 Communications network having bit-mapped refresh cycle |
| 01/05/1988 | US4718060 Station arrangement in data transmission network |
| 01/05/1988 | US4718058 Digital switching network for switching signals of different bit rates |
| 01/05/1988 | CA1231185A1 Multipriority communication system |
| 12/30/1987 | CN87104256A Telecommunication system comprising bus conductor and telecommunication stations connected to this bus conductor through transformers |
| 12/29/1987 | US4716575 Adaptively synchronized ring network for data communication |
| 12/29/1987 | US4716408 Data transmission system of the star type with enablement passing |
| 12/29/1987 | CA1230949A1 Signal multiplexing circuit |
| 12/29/1987 | CA1230943A1 Alternating communication channel switchover system |
| 12/23/1987 | EP0250334A2 Interface for connecting a device to a coaxial cable |
| 12/23/1987 | EP0250276A1 Interface between a data circuit terminating equipment and several data terminal equipments |
| 12/23/1987 | EP0250160A2 Combined circuit switch and packet switching system |
| 12/23/1987 | EP0250075A2 ISDN D channel handler |
| 12/23/1987 | EP0250035A1 Telecommunication system comprising a bus conductor and telecommunication stations connected to this bus conductor through transformers |
| 12/23/1987 | EP0249836A1 Switching device for broad-band signals |
| 12/22/1987 | US4715032 Method and apparatus for the connection of a closed ring through a telephone exchange |
| 12/22/1987 | US4715031 Vehicular data transfer communication system |
| 12/22/1987 | US4715030 Local area network bridge |
| 12/22/1987 | US4715026 Circuit arrangement for a communications system for the transmission of message information from narrowband and broadband terminal equipment within a local network constructed as a loop |
| 12/22/1987 | US4714989 Funtionally structured distributed data processing system |
| 12/22/1987 | US4714802 Apparatus and method for determining the source direction of local area network transmissions |
| 12/22/1987 | CA1230692A1 Remote subscriber interaction system |
| 12/22/1987 | CA1230662A1 Integrated digital network (idn) |
| 12/17/1987 | WO1987007801A1 Communication system having unified messaging |
| 12/17/1987 | WO1987007797A1 A method of coupling a data transmitter unit to a signal line and an apparatus for performing the invention |
| 12/16/1987 | EP0249035A2 Adaptive session-level pacing |
| 12/15/1987 | US4713811 Automatic mode switching unit for a serial communications data system |
| 12/15/1987 | US4713808 Watch pager system and communication protocol |
| 12/15/1987 | US4713807 Intelligence transmission system of the local area network type |
| 12/15/1987 | US4713805 Method and device for selecting one station from a set of stations dialoging with a main station |
| 12/15/1987 | US4713780 Electronic mail |
| 12/15/1987 | CA1230411A1 Multiple access communication on a catv reverse channel |
| 12/15/1987 | CA1230383A2 Communication network |
| 12/15/1987 | CA1230382A2 Communication network |
| 12/10/1987 | DE3619324A1 Local area network |
| 12/08/1987 | US4711976 Data transmission facility |
| 12/03/1987 | WO1987007463A1 Method and apparatus for providing variable reliability in a telecommunication switching system |
| 12/03/1987 | WO1987007462A1 Telecommunications interface |
| 12/03/1987 | WO1987007459A1 Communication protocol for a network |
| 12/02/1987 | EP0247188A1 Cable system for digital information |
| 12/02/1987 | EP0247131A1 Procedure and device for crosspoint-switching of synchronous or asynchronous data transmission lines, particularly for serial data transmission |
| 12/02/1987 | EP0247030A1 Connector interface |
| 12/01/1987 | US4710943 Starlan coded data transceiver collision detection circuit |
| 12/01/1987 | US4710929 Modem use monitor |
| 12/01/1987 | US4710918 Composite data transmission system |
| 12/01/1987 | US4710916 Switching apparatus for burst-switching communications system |
| 12/01/1987 | US4710915 Loop transmission system having automatic loop configuration control means |
| 12/01/1987 | US4710871 Data transmitting and receiving apparatus |
| 12/01/1987 | US4710769 Transmit-secure non-blocking circuit-switched local area network |
| 12/01/1987 | CA1229880A1 Local modulated carrier data network with a collision avoidance protocol |
| 12/01/1987 | CA1229879A1 Data link extension for data communication networks |
| 11/30/1987 | EP0094431A4 Telemetry system with signal booster for digital data transmission through a transmission line. |
| 11/25/1987 | EP0246666A2 Serial data bus for different modes of operation (SCI, SPI and buffered SPI) and methods for a serial peripheral interface in a serial data bus |
| 11/25/1987 | EP0246428A2 Method and system for addressing and controlling a network of modems |
| 11/25/1987 | EP0152407B1 Communication network |
| 11/25/1987 | CN87100702A Communications switching system |
| 11/24/1987 | US4709365 Data transmission system and method |
| 11/24/1987 | US4709364 Network priority determining method |
| 11/24/1987 | CA1229677A1 Time-slot interchanger for fast circuit switching |
| 11/19/1987 | EP0245996A2 Method of and switch for switching information |
| 11/19/1987 | EP0245899A1 Device for testing the line equipment of a switching exchange |
| 11/19/1987 | EP0245765A2 Data transfer control system |
| 11/19/1987 | EP0245249A1 Synchronous, decentralized data transmission method, and data transmission network using such method. |
| 11/17/1987 | US4707849 High speed automatic test apparatus especially for electronic directory terminals |
| 11/17/1987 | US4707832 Switched point-to-point local area network control mechanism |