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)
01/1991
01/29/1991US4989135 Communication control microcomputer
01/29/1991CA1279710C Monitoring device for monitoring the operating states of telecommunications transmission devices
01/23/1991EP0409622A2 Communication terminal equipment
01/23/1991EP0409434A1 Method and device for controlling communication between computers
01/22/1991US4987588 Data transmission processing machine
01/16/1991EP0408391A2 Computer system having network interconnected workstations
01/16/1991EP0408086A2 Watch pager system
01/15/1991US4985895 Reassembling transmitted bytes of data
01/15/1991US4985894 Fault information collection processing system
01/15/1991US4985887 Systems for selecting a transmission control procedure in communications using integrated services digital networks
01/08/1991US4984290 Method of controlling communications in a cellular radiotelephone system
01/08/1991US4984240 Distributed switching architecture for communication module redundancy
01/08/1991CA1278840C Method and apparatus for sharing resources among multiple processingsystems
01/02/1991EP0405829A2 Object oriented software system architecture
01/02/1991EP0405736A2 Fault tolerant data processing system initialisation
01/02/1991EP0405545A2 Data communication adapter and data communication terminal apparatus employing the same
01/02/1991EP0405041A1 Terminal adapter having a multiple HDLC communication channels receiver for processing control network management frames
01/02/1991EP0404870A1 Serial data interface
01/01/1991US4982430 Bootstrap channel security arrangement for communication network
12/1990
12/27/1990CA1278389C Cpu channel to control unit extender
12/27/1990CA1278363C High speed trunk interface with concurrent protocol handlers
12/26/1990CN1011014B Communication channel transceiver
12/19/1990EP0403414A2 Method and system for automatic non-disruptive problem determination and recovery of communication link problems
12/19/1990EP0403147A2 Line interface circuit and a method of testing such a circuit
12/18/1990US4979169 Method and apparatus for performing format conversion between bit streams
12/18/1990US4979104 Dual microprocessor control system
12/18/1990CA1278116C Diagnostic method of equipment and system using the same
12/13/1990WO1990015394A1 Appliance interface for exchanging data
12/12/1990EP0366788A4 D channel monitor
12/12/1990CN1047774A Apparatus for processing signalling messages in asynchronous time division telecommunications network
12/11/1990US4977555 Asynchronous duplex data communication for requesting services
12/11/1990US4977499 Method and apparatus for commanding operations on a computer network
12/11/1990CA1277789C Method of controlling the electric power supplied to a modem
12/11/1990CA1277743C Broadband digital transmission systems
12/06/1990DE4017298A1 Automatic selector of facsimile transmission rate - adds error information from test to disturbance signal in receiver for analysis and optimum rate selection
12/06/1990DE3918551A1 Verfahren zur analogen uebertragung bzw. speicherung einer digitalen information A method for analog transmission and storage of digital information
12/05/1990EP0400764A2 Transaction system
12/04/1990WO1990015494A1 Process for analog transmission or storage of digital data
12/04/1990US4975914 In a computer communications system
12/04/1990US4975910 Method of operating a packet switching network
12/04/1990US4975905 Message transmission control arrangement for node in local area network
12/04/1990US4975904 Local area network for digital data processing system including timer-regulated message transfer arrangement
12/04/1990US4975900 Response delay system of an ISDN terminal in a point to multipoint configuration
12/04/1990US4975828 Multi-channel data communications controller
12/04/1990CA2060893A1 Process for analog transmission or storage of digital data
12/04/1990CA1277382C Inter-processor communication protocol
11/1990
11/29/1990WO1990014724A1 Bit stream machine
11/29/1990WO1990014723A1 Bit stream machine
11/28/1990EP0399491A2 Multiplex transmission system for use in a vehicle
11/27/1990US4974223 Parallel architecture for high speed flag detection and packet identification
11/27/1990US4974190 Pass-through and isolation switch
11/22/1990EP0398729A2 Processor modem
11/22/1990EP0398650A2 Data structure construction
11/22/1990EP0398649A2 Remote interrupt processing
11/22/1990EP0398204A2 Automatic routing of documents sent over fax network between data processing systems
11/22/1990EP0398178A2 Data communication control device
11/22/1990EP0397934A1 Bit stream machine
11/22/1990EP0397933A1 Bit stream machine
11/20/1990US4972437 Method of controlling limited resource sessions in a data communications network
11/20/1990US4972367 System for generating unsolicited messages on high-tier communication link in response to changed states at station-level computers
11/14/1990EP0397535A2 Modem
11/14/1990EP0397138A2 Embedded control technique for distributed control systems
11/14/1990EP0396589A1 Method and apparatus for automatic loading of a data set in a node of a communication network.
11/13/1990US4970718 Apparatus for supplying channel-control signals and maintenance signals in a serial data concentrator system
11/13/1990US4970714 Adaptive data link protocol
11/13/1990CA1276309C Enhanced distance data transmission system
11/07/1990EP0396309A2 Apparatus and method for efficiently coupling digital signals to a communications medium in information packets
11/07/1990EP0395739A1 Process for controlling and/or monitoring and circuit arrangement for implementing the process.
11/04/1990WO1990013970A1 Process and device for transmitting teletext data
11/04/1990CA2054770A1 Process and device for transmitting teletext data
11/01/1990WO1990013193A1 Double bus type network
10/1990
10/31/1990EP0395563A2 Method and apparatus for providing continuous availability of applications in a computer network
10/31/1990EP0395562A2 A method and an apparatus for delineating the beginning and the end of a data file sent to a print server in a computer network
10/31/1990EP0395495A1 Adaptive network routing for power line communications
10/31/1990EP0395428A2 Communication protocol for statistical data multiplexers arranged in a wide area network
10/31/1990EP0395208A2 Bit residue correction in DLC receivers
10/31/1990EP0394596A1 Interconnection system for the attachment of user equipments to a communication processing unit
10/31/1990DE4008984A1 Test data compression in function tester - applying digital signal train to tested sample and receiving reply signals for testing
10/28/1990CA2015602A1 Communication protocol for statistical data multiplexers arranged in a wide area network
10/24/1990EP0394174A2 System and method for reporting message format errors in a format independent manner
10/24/1990EP0394096A1 Videotex terminal capable of telecopy reception
10/24/1990EP0393314A2 High data rate asynchronous communication method and apparatus
10/23/1990US4965795 D channel monitor
10/23/1990US4965641 Processor modem
10/23/1990CA1275506C Data transmission security arrangement for a plurality of data stations sharing access to a communication network
10/18/1990WO1990012465A1 High speed data packet switching circuit and method
10/17/1990EP0392209A2 Communication system having two data processing units each having function of monitoring the other data processing unit
10/16/1990US4964141 Serial data processor capable of transferring data at a high speed
10/16/1990US4964120 Method of detecting a cable fault and switching to a redundant cable in a universal local area network
10/16/1990US4963763 Load control system and method for disconnecting sub-bus from main-bus
10/13/1990CA2014301A1 Videotext terminal usable as a fax copier
10/10/1990EP0391543A2 Microprocessor clock
10/10/1990EP0390931A1 Method of matching operation mode of a modem
10/10/1990EP0390920A1 Series controller
10/10/1990CN1046075A Testing optical fibre links
10/09/1990USRE33380 Voiceband data set
10/09/1990US4962498 Multi-length packet format including check sequence(s)
10/04/1990DE4010311A1 Data processor with interrupt control - allows interruption of central processing unit in response to direct memory access command
10/03/1990EP0390567A2 Eletronic device with exclusive control type communication function and its communication system
10/03/1990EP0390320A2 Testing optical fibre links
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