| Patents for H04L 12 - Data switching networks (448,999) |
|---|
| 07/14/1987 | US4680757 Method of and apparatus for storing priority levels in token-ring network system |
| 07/14/1987 | US4680756 For transmitting data |
| 07/14/1987 | US4680755 Real-time end of packet signal generator |
| 07/14/1987 | US4680752 Time switch in a time division switching network |
| 07/14/1987 | US4680583 Terminal address assignment in a broadcast transmission system |
| 07/14/1987 | US4680581 Local area network special function frames |
| 07/14/1987 | US4680431 Data network interface module with circuitry for disconnecting a module that has lost supply voltage |
| 07/08/1987 | EP0228250A2 Coupling Discriminator |
| 07/08/1987 | EP0228078A2 Limited multicast communication method and communication network system realizing the method |
| 07/08/1987 | EP0227852A1 Local area communication system for integrated services based on a token-ring transmission medium |
| 07/08/1987 | EP0227759A1 Transmission system |
| 07/07/1987 | US4679226 Computer security guard circuit |
| 07/07/1987 | US4679193 Runt packet filter |
| 07/07/1987 | US4679192 Arrangement for transmitting digital data |
| 07/07/1987 | US4679191 Variable bandwidth switching system |
| 07/07/1987 | US4679190 Distributed voice-data switching on multi-stage interconnection networks |
| 07/07/1987 | US4679189 Alternate routing arrangement |
| 07/07/1987 | US4679186 Alternate self-routing packet switching node having fault detection capabilities |
| 07/07/1987 | CA1223933A1 Transmission line control system |
| 07/07/1987 | CA1223924A1 Signal processing unit |
| 07/02/1987 | WO1987004030A1 Procedure and device to determine data transmission rate and signal distortion of synchronous and asynchronous serial data transmission lines |
| 07/01/1987 | EP0227362A2 Wavelength multiplexed optical communications system and method |
| 07/01/1987 | EP0227217A2 Constant carrier watchdog |
| 07/01/1987 | EP0227072A2 Data transmission security arrangement for a plurality of data stations sharing access to a communication network |
| 07/01/1987 | EP0226975A2 Network interface equipment for interfacing digital data with a bus network |
| 07/01/1987 | EP0226963A2 Data switching for combined bus and star data network |
| 07/01/1987 | EP0226634A1 A self-routing multipath packet switching network with sequential delivery of packets. |
| 06/30/1987 | US4677686 Passive transmission of data over cable TV systems |
| 06/30/1987 | US4677646 Dataset powered by control and data signals from data terminal |
| 06/30/1987 | US4677616 Flow control scheme for a switching network |
| 06/30/1987 | US4677615 Structure detecting method for circular type transmission system |
| 06/30/1987 | US4677614 Data communication system and method and communication controller and method therefor, having a data/clock synchronizer and method |
| 06/30/1987 | US4677613 Network system for connecting multiple I/O devices to computers |
| 06/30/1987 | US4677612 Communication system with subdivided transmission cycles |
| 06/30/1987 | US4677552 International commodity trade exchange |
| 06/30/1987 | US4677434 Access control system for transmitting data from a central station to a plurality of receiving stations and method therefor |
| 06/24/1987 | EP0225959A1 Method and apparatus for encrypting and decrypting communications between a user and a computer over the telephone network, in vocal form in the direction computer to user and in frequency-coded form in the direction user to computer |
| 06/23/1987 | US4675866 Broadband network systems |
| 06/23/1987 | US4675863 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels |
| 06/23/1987 | US4675671 Loop network system |
| 06/23/1987 | CA1223378A1 Multiple-access communications system |
| 06/23/1987 | CA1223377A1 Data transmission system |
| 06/23/1987 | CA1223376A1 Communication system bypass architecture |
| 06/23/1987 | CA1223370A1 Method and apparatus for detecting the collision of data packets |
| 06/23/1987 | CA1223326A1 Data network interface |
| 06/23/1987 | CA1223325A1 Packet and circuit switched communications network |
| 06/23/1987 | CA1223316A1 Management help tool for communication systems operating on local area network |
| 06/16/1987 | US4674086 Token ring access control protocol circuit |
| 06/16/1987 | US4674085 Local area network |
| 06/16/1987 | EP0225756A2 Method of secured communications in a telecommunications system |
| 06/16/1987 | EP0225714A1 Communications network |
| 06/16/1987 | EP0225652A2 Automatic retrain method for a full duplex modem having an echo canceller and an equalizer |
| 06/16/1987 | EP0225340A1 A control system. |
| 06/10/1987 | EP0225024A2 Data transmission system |
| 06/10/1987 | EP0225022A2 Multi-node data processing system |
| 06/10/1987 | EP0224818A1 Circuit arrangement for telecommunication exchanges, especially telephone exchanges, with jacket switching of messages from or to message processing units in message channels |
| 06/09/1987 | US4672662 Switching system and method for network having a plurality of terminal control equipment units |
| 06/09/1987 | US4672608 Multiple access communications system |
| 06/09/1987 | US4672607 Local area network communication system |
| 06/09/1987 | US4672606 Method, station and system for the transmission of messages in the form of data packets |
| 06/09/1987 | US4672543 Data transmission control apparatus in local network systems |
| 06/09/1987 | US4672373 Communication network system |
| 06/04/1987 | WO1987003447A1 Procedure and device for crosspoint-switching of synchronous or asynchronous data transmission lines, particularly for serial data transmission |
| 06/04/1987 | WO1987003445A1 Local area network system |
| 06/04/1987 | WO1987003443A1 Synchronous, decentralized data transmission method, and data transmission network using such method |
| 06/04/1987 | WO1987003439A1 Cable system for digital information |
| 06/03/1987 | EP0224244A2 Switching system having multiple parallel switching networks |
| 06/03/1987 | EP0224241A2 A self-routing switch node combining electronic and photonic switching |
| 06/03/1987 | EP0224229A2 Alternate routing arrangement |
| 06/03/1987 | EP0224132A2 Optical composite transceiver |
| 06/02/1987 | US4670906 Data communications system transmitter selection method and apparatus |
| 06/02/1987 | US4670873 System for setting up data transmission circuits between a plurality of stations |
| 06/02/1987 | US4670872 Communication link contention resolution system |
| 06/02/1987 | US4670871 Reliable synchronous inter-node communication in a self-routing network |
| 05/27/1987 | EP0223460A2 Real-time end of packet signal generator |
| 05/27/1987 | EP0223459A2 Runt packet filter |
| 05/27/1987 | EP0222828A1 Agent communication method for telecommunication systems. |
| 05/20/1987 | EP0222669A2 Thin-wire multiport repeater |
| 05/20/1987 | EP0222584A2 A bridge for and a method for routeing signals between local area networks |
| 05/20/1987 | EP0222308A2 Radio communication system having means for avoiding signal collision |
| 05/20/1987 | EP0222017A1 Circuit switching devices |
| 05/19/1987 | US4667323 Industrialized token passing network |
| 05/19/1987 | US4667322 Method and apparatus for local area networks |
| 05/19/1987 | US4667321 Input-output multiplexer-demultiplexer communications channel |
| 05/19/1987 | US4667193 Addressing system for simultaneously polling plural remote stations |
| 05/19/1987 | US4667191 Serial link communications protocol |
| 05/19/1987 | CA1222080A1 Method and device for selecting a station among a set of stations in communication with a main station |
| 05/19/1987 | CA1222056A1 Method of coding to minimize delay at a communication node |
| 05/19/1987 | CA1222035A1 Bus-configured local area network with data exchange capability |
| 05/13/1987 | EP0221708A2 Communication system for the transfer of small digital message blocks and large digital message blocks |
| 05/13/1987 | EP0221589A1 Device for establishing a connection between a telecommunication network and a controllable system, such as a computer system, provided with an access control unit controllable via a separate network terminal |
| 05/13/1987 | EP0221360A2 Digital data message transmission networks and the establishing of communication paths therein |
| 05/13/1987 | EP0221140A1 Operator communication arrangements for operator assistance systems |
| 05/12/1987 | US4665544 Home control system and interphone system |
| 05/12/1987 | US4665521 Portable testing device for monitoring communication line activity |
| 05/12/1987 | US4665519 Wireless computer modem |
| 05/12/1987 | US4665518 Synchronous/asynchronous communication system |
| 05/12/1987 | US4665517 Method of coding to minimize delay at a communication node |
| 05/12/1987 | US4665514 Integrated voice/data network |
| 05/12/1987 | CA1221757A1 Method for operating a packet bus for transmission of asynchronous and pseudo-synchronous signals |