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)
12/1989
12/05/1989CA1263760A1 Apparatus for multiprocessor communication
12/05/1989CA1263721A1 Communication system for the transfer of small digital message blocks and large digital message blocks
11/1989
11/30/1989WO1989011769A1 Communication system having a packet structure field
11/30/1989WO1989011764A1 Communication system and switching element used therein
11/30/1989WO1989011763A1 Series controller
11/30/1989DE3816747A1 Circuit-switching packet switching device
11/29/1989EP0344036A1 Method and device for transmitting digital information between various CSMA/CD stations
11/29/1989EP0344035A1 Digital information transmission network between several stations
11/29/1989EP0343630A2 Terminal apparatus for resetting by remote control
11/29/1989EP0343611A2 Routing method for fast packet switching systems
11/29/1989EP0343439A2 Circuit arrangement of a communication network with at least one optical concentrator
11/29/1989EP0343319A2 Digital-information transmission method for communication-switching systems
11/28/1989US4884266 Variable speed local area network
11/28/1989US4884264 Hybrid time multiplex switching system with optimized buffer memory
11/28/1989US4884263 Packet-switched communications network with parallel virtual circuits for re-routing message packets
11/28/1989US4883989 Circuit for precharging a bus
11/23/1989EP0343083A1 Loss of synchronisation detection device, and its use in a digital transmission network
11/23/1989EP0342861A2 Smoothing apparatus for independently clocked networks
11/23/1989EP0342510A1 Method for the insertion of message packets with a fixed length in a pulse frame of a digital transmission system
11/23/1989EP0342469A1 Method of inserting an asynchronous 139 264 kbit/s signal in a 155 520 kbit/s signal
11/23/1989EP0342273A1 Bus terminal
11/23/1989DE3816159A1 Method for the production of time references in a communications network
11/22/1989CN1037437A 通信系统 Communications systems
11/21/1989US4882728 Networking circuitry
11/21/1989US4882727 Adaptive digital network interface
11/21/1989US4882705 Data transmission system including the downloading of a first program for the interruption of a second program
11/21/1989US4882580 Communication system
11/21/1989US4882554 Multi-drop type bus line system
11/21/1989US4882476 Bar code reader with enhanced sensitivity
11/21/1989CA1263168A1 Telecommunication system for alternatingly transmitting circuit-switched and packet-switched information
11/16/1989WO1989011192A1 Local area network with multiple access by distributed traffic control
11/16/1989WO1989011191A1 Device for detecting the position of broken line in a series controller
11/16/1989WO1989011187A1 Reconfigurable local area network
11/16/1989WO1989011126A1 A method and arrangement for channel monitor and control
11/14/1989US4881244 Transmission-reception equipment for a bus system
11/14/1989US4881220 Multiplex communication system for sequence controllers
11/14/1989US4881196 Data transmission line branching system
11/14/1989US4881167 Data memory system
11/14/1989US4881074 Method for forming an address table in a ring-shaped communications network
11/09/1989EP0205467A4 Serial link communications protocol.
11/09/1989DE3814015A1 Method for digital transmission of information for communication switching systems
11/09/1989DE3813789A1 Method for structuring a safe ringbus system and the arrangement for carrying out the method
11/08/1989EP0341175A1 Multiple access by distributed traffic control in a local area communication network
11/08/1989EP0341166A1 Method and apparatus for the asynchronous transmission of packaged data
11/08/1989EP0340841A1 Cross-point element between two data highways
11/07/1989US4879742 Charging system in data communication network
11/07/1989US4879714 Channel assignment system for loop network
11/07/1989US4879712 Communications switch
11/07/1989US4879550 Method and system for loop communication
11/07/1989US4879541 Supervisory control system
11/02/1989WO1989010669A1 Multiple-access communications system
11/02/1989WO1989010668A1 Multiple access communications system
11/02/1989WO1989010667A1 High capacity communication system utilizing or-type channels
11/02/1989WO1989010666A1 Security system network
11/02/1989EP0339839A1 Network having an apparatus for identifying a location of a lost token signal in the network, and method for so doing
11/02/1989EP0339809A2 An asynchronous time division network
11/02/1989EP0339740A2 Communication system
11/02/1989EP0339735A1 Junction switch for packet switching
11/02/1989EP0339476A2 Method and device for the institution of electronic communication service messages composed of speech and non-speech components
11/02/1989EP0339270A2 Apparatus and method for automatically detecting hot-spot references and diverting same from memory traffic in a multiprocessor computer system
11/02/1989EP0182780B1 Entrance telephone installation and method, for transmission of alarm signals
11/02/1989DE3812216A1 Bus system
10/1989
10/31/1989US4878218 Data transmission method and data transmission system free from local traffic jam
10/31/1989US4878215 Signal switching system
10/25/1989EP0338628A1 Switch system for circuit and/or packet-switched communications
10/25/1989EP0338558A2 Packet switch suitable for integrated circuit implementation
10/25/1989EP0338129A2 Transceiver coupler for one-pair cabling of a high-speed network
10/25/1989EP0324012A4 Shorted-coaxial-cable detector for local-area networks.
10/24/1989US4876742 Apparatus and method for providing a wireless link between two local area network systems
10/24/1989US4876681 Packet switching equipment and a packet switching method for controlling packet switched networks
10/18/1989EP0337876A1 Arrangement for reducing the energy drain of a cyclical working equipment such as a time-multiplexed switcher
10/18/1989EP0337635A1 Personal computer based non-interaction monitoring of communication links
10/18/1989EP0337622A1 Ring data network
10/18/1989EP0337545A1 Apparatus for measurement and cancellation of distortion of binary signals of the type not comprising DC spectral components
10/18/1989EP0336945A1 Data link monitoring system
10/18/1989EP0204770B1 Data transmission system including adaptive hybrid control
10/18/1989EP0200780B1 Packet switched multiple queue nxm switch node and processing method
10/17/1989US4875223 Twisted pair adapter
10/17/1989US4875208 Transmission method for control information in communication network
10/17/1989US4875206 High bandwidth interleaved buffer memory and control
10/17/1989US4875205 Crosstalk reduction in unshielded twisted-pair lines
10/17/1989US4875158 Method for requesting service by a device which generates a service request signal successively until it is serviced
10/17/1989US4875037 Automatic rerouting of calls through data buses
10/11/1989EP0336598A2 Arrangement for switching concentrated telecommunications packet traffic
10/11/1989EP0336401A2 Method and system for packet exchange
10/11/1989EP0336373A2 Cell switching system of asynchronous transfer mode
10/11/1989EP0335917A1 Process for tracing defective stations in local networks and corresponding interface controller.
10/11/1989EP0335877A1 Method for transmitting data in packet switching networks.
10/10/1989US4873681 Hybrid optical and electronic packet switch
10/10/1989US4873517 Method for selecting least weight end node to end node route in a data communications network
10/10/1989US4873393 Local area network cabling arrangement
10/10/1989CA1262285A1 Method of getting access to and utilizing a message channel in a communication system and arrangement for performing the method
10/10/1989CA1262274A1 Isdn d channel handler
10/05/1989WO1989009522A1 Multichannel bandwith allocation
10/05/1989WO1989009521A1 Communication switching element
10/05/1989WO1989009446A1 Communication processor for a packet-switched network
10/05/1989WO1989009443A1 Data communications system
10/05/1989WO1989009438A1 Automat for controlling distant means depending on the signalling of communication links
10/05/1989DE3908838A1 Method and device for data packet switching
10/05/1989DE3810400A1 Cell former in an asynchronous time division multiplex system
1 ... 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466 4467 ... 4490