Patents
Sitemap › H04 - Electric communication technique › H04L - Transmission of digital information, e.g. telegraphic communication › H04L 29 - Arrangements, apparatus, circuits or systems, not covered by a single one of groups
Patents for H04L 29 - Arrangements, apparatus, circuits or systems, not covered by a single one of groups (330,333)
10/1990
10/03/1990EP0390085A2 Method and system for controlling transmission of image data
10/03/1990EP0390015A1 Device for processing signalling messages in a communication network using an asynchronous time technique
10/03/1990EP0389729A1 Data transmission system with a link problem determination aid (LPDA) support for all ports
10/03/1990EP0389696A1 Serial data receiver
10/03/1990EP0389689A1 Method for transmitting a transmission signal and a transmitting device and a receiving device for use in the method
09/1990
09/28/1990CA2010908A1 Testing optical fibre links
09/26/1990EP0389182A2 Transmitter and receiver for data link system
09/26/1990EP0389181A2 Apparatus for detecting the configuration of a communication port
09/26/1990EP0389165A2 Fiber optic data link system
09/25/1990US4959773 Adapter for attaching I/O devices to I/O communications with alternating read and write modes link
09/21/1990CA2012523A1 Apparatus for detecting the configuration of a communication port
09/20/1990WO1990010987A2 Energy saving protocol for a communication system
09/20/1990WO1990005422A3 Digital image processing and display system
09/18/1990US4958341 Integrated packetized voice and data switching system
09/18/1990US4958278 Method for loading data or program to a plurality of terminal stations
09/05/1990EP0385042A1 Method of adjusting the end of transmission in a modem
09/04/1990US4954950 Terminal communications circuit
09/04/1990US4954821 Method of establishing transmission group numbers for network links
09/04/1990US4954101 Improved cable for coupling between data terminals and data sets
09/04/1990CA1273689A1 Modem with improved handshaking capability
09/04/1990CA1273679A1 Telesignalling method and device for a bidirectional digital transmission link
09/02/1990WO1990010346A1 Isdn composite switching system
08/1990
08/29/1990EP0384339A2 Broker for computer network server selection
08/28/1990US4953210 Feature negotiation protocol for a synchronous modem
08/28/1990CA1273436A1 Network interface module with minimized data paths
08/24/1990CA2010762A1 Broker for computer network server selection
08/23/1990WO1990009631A1 Process for monitoring a computer network
08/22/1990EP0383437A2 Format converter
08/22/1990EP0382794A1 Network interface.
08/21/1990US4951281 Multiplex transmission system
08/21/1990US4951278 In a data communications system
08/21/1990CA1273122A1 Very high speed line adapter for a communication controller
08/21/1990CA1273121A1 Communication bit pattern detection circuit
08/21/1990CA1273076A1 Flexible duplex dual port serial link controller
08/16/1990EP0382669A2 Method of operating a full-duplex conversation in a communication network
08/14/1990US4949333 Enhanced universal asynchronous receiver-transmitter
08/14/1990US4949301 Improved pointer FIFO controller for converting a standard RAM into a simulated dual FIFO by controlling the RAM's address inputs
08/14/1990US4949248 System for shared remote access of multiple application programs executing in one or more computers
08/14/1990US4949175 Digital data transmission system
08/08/1990EP0381515A2 Integrated communications system for HDLC variable-length data packets and fixed-length voice/video packets
08/08/1990EP0381387A2 Message generating communication apparatus
08/08/1990EP0381365A2 A system and method for interconnecting applications across different networks of data processing systems
08/07/1990US4947317 Communication protocol for a three nodes system having dedicated connections and bit indicating function of exchanged message
08/07/1990US4947268 Data transmission system
08/07/1990US4947162 Terminal device for a monitoring and control system
08/01/1990EP0380378A1 Method and device for the hierarchical access to an information transmission network
08/01/1990EP0380141A2 Local area network for digital data processing system
08/01/1990EP0379829A2 Method of providing non-disruptive recovery in a communication system
07/1990
07/31/1990US4945473 Communications controller interface
07/31/1990CA1272261A1 Addressing for a multipoint communication system for patient monitoring
07/30/1990CA2005898A1 Message generating communication apparatus having a message preamble format allowing parts of certain messages to be ignored
07/25/1990CN1008962B Subscriber rf telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of rf channels
07/24/1990US4943978 Digital interface unit
07/24/1990US4943942 Full-duplex modem using a single processor
07/18/1990EP0378401A2 Data communications system
07/18/1990EP0378400A2 Two directional data communications system
07/17/1990US4942572 Process and device for high speed polling
07/17/1990US4942540 Method an apparatus for specification of communication parameters
07/12/1990WO1990007827A1 Distributed switching architecture for communication module redundancy
07/11/1990EP0377350A1 Multi-protocol ISDN communication controller
07/11/1990EP0377204A1 System for the transmission of HDLC frames on a PCM channel using a single HDLC circuit, and transposition buffer memory
07/11/1990EP0377203A1 Reception and processing system for HDLC frames transmitted on PCM-TDM multipaths, especially for a data switcher
07/11/1990EP0377136A2 Adaptive data link protocol
07/10/1990US4941144 Data transmission device capable of adaptively varying a packet size without an increase in hardware
07/10/1990US4941115 Hand-held tester for communications ports of a data processor
07/10/1990US4941089 Input/output network for computer system
07/10/1990US4941084 System for locating resources resided in a distributing processing system by sequentially transmitting resource inquiries through a looped transmission line
07/10/1990CA1271562A1 Interface between a computer bus and a serial packet link
07/10/1990CA1271536A1 Communication channel transceiver
07/04/1990EP0376316A2 Computer message & screen communication in a multilingual network
07/03/1990US4939741 Communication control system
07/03/1990US4939736 Protection against loss or corruption of data upon switchover of a replicated system
07/03/1990CA1271261A1 Apparatus, method and algorithm for encoding and decoding characters in a message to be transmitted between a first system and a second system
06/1990
06/29/1990CA2003418A1 Computer message & screen communications in a multi-lingual network
06/27/1990EP0375664A2 Local area network for digital data processing system
06/27/1990EP0375645A2 Serial link transparent mode disparity control
06/27/1990EP0375456A2 Method for managing an electronic mail basket service
06/27/1990EP0375361A2 Duplex communications method and system
06/27/1990EP0375243A1 Packet network timing analyzer
06/27/1990EP0375032A1 Method of establishing a data link between a pair of terminals as well as a terminal which is suitable for implementing this method
06/27/1990EP0374176A1 Method and system for transmitting information and controlling components
06/26/1990US4937825 Method and apparatus for diagnosing problems in data communication networks
06/26/1990US4937737 Process transparent multi storage mode data transfer and buffer control
06/26/1990US4937464 Modular jack with loop testing switch
06/26/1990CA1270960A1 Non coded information and companion data switching mechanism
06/26/1990CA1270959A1 Coupling discriminator
06/21/1990CA2004856A1 System for automatic generation of message parser
06/20/1990EP0374134A2 Local area network for digital data processing system
06/20/1990EP0374133A2 Local area network for digital data processing system
06/20/1990EP0374132A2 Local area network for digital data processing system
06/20/1990EP0374131A2 Local area network for digital data processing system
06/14/1990WO1990006548A1 Telephone-programmable computer
06/13/1990EP0373130A2 Method for maintaining the integrity of ties in a layered communications system
06/13/1990EP0372534A2 Data transmission system
06/13/1990CN1043030A Modem with improved digital signal processor
06/12/1990US4933672 Data transmission system with a digital alarm facility
06/12/1990CA1270305A1 Automatic synchronous/asynchronous modem
06/06/1990EP0371593A2 Method for initializing or synchronizing a communication link
06/06/1990EP0371229A2 Computer system having host computer
06/06/1990EP0258350B1 Method for data exchange between a first and a second processor
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