Patents
Patents for H04L 29 - Arrangements, apparatus, circuits or systems, not covered by a single one of groups (330,333)
06/1990
06/06/1990CN1042814A Method for sending plurality of data channels over single communications line
06/06/1990CN1042786A Parallel microcomputer of user digital terminal with digital network of centralization service
06/05/1990US4931924 Data transfer speed control apparatus capable of varying speed of data transfer between devices having different transfer speeds
06/05/1990US4931790 Digital remote control method
06/05/1990US4931250 Multimode modem
06/05/1990CA1270066A1 Method of propagating resource information in a computer network
05/1990
05/31/1990WO1990006027A1 Lan with dynamically selectable multiple operational capabilities
05/30/1990EP0370064A1 A method for transmitting high-definition television over low-bandwidth channels
05/29/1990CA1269757A1 Distributed control of alias name usage in networks
05/29/1990CA1269734A1 Fault tolerant dual port serial link controller
05/23/1990EP0368979A1 Process for transmitting data between entities capable of emitting and/or receiving data.
05/22/1990US4928305 Intelligent modem with manual escape switch
05/17/1990WO1990005422A2 Digital image processing and display system
05/16/1990EP0368537A2 Reliable recovery of data in encoder/decoder
05/16/1990EP0368055A2 Method for sending a plurality of data channels over a single communications line
05/15/1990US4926414 Control point session synchronization in a network
05/15/1990US4926375 Multiple nodes broadcast communication method with receiver identification by bit position in transferred massage
05/15/1990US4925294 Method to convert two dimensional motion pictures for three-dimensional systems
05/09/1990EP0367460A1 Optical fiber bus controller
05/09/1990EP0366866A2 A packet switch protocol and apparatus as for a parallel processing machine
05/09/1990EP0366788A1 D channel monitor
05/09/1990CN1042035A Feature negotiation protocol and dynamically adjustable retraming sequence for high speed half duplex method
05/08/1990US4924520 Method for initializing security data communication
05/08/1990US4924493 Method for monitoring call setup communications
05/08/1990US4924479 Communication control system
05/08/1990CA1268845A1 Interface circuit for interconnecting circuit switched and packet switched systems
05/03/1990WO1990004894A1 Method and apparatus for preventing transmission of data packets with a greater intensity than a predetermined value on any one of a number of channels on a common transmission link
05/02/1990EP0366635A1 Method and apparatus for preventing transmission of data packets with a greater intensity than a predetermined value on anyone of a number of channels on a common transmission link
05/02/1990EP0366036A2 Memory management in packet data mode systems
05/02/1990EP0365649A1 Apparatus and method for mapping the connectivity of communications systems with multiple communications paths
05/02/1990EP0135499B1 A method for achieving multiple processor agreement optimized for no faults
05/01/1990US4922486 User to network interface protocol for packet communications networks
05/01/1990CA1268532A1 Method and apparatus for providing variable reliability in a telecommunication switching system
04/1990
04/28/1990CA2001677A1 Method and apparatus for preventing transmission of data packets with a greater intensity than a predetermined value on anyone of a number of channels on common transmission link
04/25/1990EP0364866A2 Feature negotiation protocol and dynamically adjustable retraining sequence for a high speed half duplex modem
04/25/1990CN1007760B Multi-cpu interlock
04/24/1990CA1268274A1 Portable communication terminal for remote database query
04/24/1990CA1268272A1 Access circuit diagnostics for integrated services digital network
04/18/1990EP0364170A2 High speed serial data link
04/11/1990EP0363173A2 Communication processors for layered protocols
04/10/1990US4916694 Packet network timing analyzer
04/10/1990US4916607 Computer for executing a process control program and a communication control program in parallel
04/10/1990CA1267703A1 System for controlling operation mode of modulator/demodulator
04/05/1990WO1990003701A1 Method of matching operation mode of a modem
04/04/1990EP0360917A1 Method and circuit arrangement for controlling a serial interface circuit
04/03/1990US4914688 Modem system
04/03/1990US4914653 Inter-processor communication protocol
04/03/1990US4914619 Apparatus and method for interconnecting an application of a transparent services access facility to remote source
04/03/1990US4914583 Method of indicating processes resident within a cell of a data processing system
04/03/1990US4914571 Locating resources in computer networks
03/1990
03/28/1990EP0360723A2 Method of enhancing communication setup between a commmunication station and a telecommunications network
03/28/1990EP0360722A2 Method for monitoring call setup commmunications
03/28/1990EP0360489A2 Protection against loss or corruption of data upon switchover of a replicated system
03/28/1990EP0360478A2 A packet switching architecture providing encryption across packets
03/28/1990CN1040883A Modem with improved digital signal processor
03/27/1990US4912705 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels
03/22/1990WO1990003005A1 Entity management system
03/22/1990EP0441798A1 Entity management system for a distributed computer system
03/20/1990US4910777 Packet switching architecture providing encryption across packets
03/20/1990US4910754 Initialization and synchronization method for a two-way communication link
03/20/1990US4910733 Rendezvous network protocol with reduced bandwidth and processor time
03/20/1990US4910610 Facsimile communication system
03/20/1990US4910507 Interface module for connecting collision detection LAN user terminals to different access mode switching network
03/20/1990US4910474 Method and apparatus for generating phase and amplitude modulated signals
03/14/1990EP0358441A2 Communication apparatus
03/14/1990EP0358293A2 Local area system transport
03/14/1990EP0358292A2 Remote boot
03/13/1990US4908823 Hybrid communications link adapter incorporating input/output and data communications technology
03/08/1990WO1990002377A1 Serial data interface
03/07/1990EP0357471A1 Interface circuit for a serial link or current loop
03/07/1990EP0356873A1 Serial data interface
03/06/1990US4907254 Power source system for data terminal equipment
02/1990
02/28/1990EP0355797A2 Signalling apparatus for use in an ATM switching system
02/28/1990EP0203151B1 Loop around data channel unit
02/28/1990EP0203150B1 Method and apparatus for looping around a digital transmission line at a channel unit
02/28/1990CN1007032B Method of duplex data transmission using send-and-wait protocol
02/27/1990US4905282 Feature negotiation protocol and dynamically adjustable retraining sequence for a high speed half duplex modem
02/27/1990US4905229 Local area communication network
02/27/1990US4905138 Meta-interpreter
02/22/1990WO1990001739A1 Network interface
02/21/1990EP0355078A2 Hand-held tester for the input/output ports of a data processor
02/20/1990US4903016 Communication control unit
02/13/1990US4901348 Data transmission security arrangement for a plurality of data stations sharing access to a communication network
02/08/1990DE3826774A1 Netzwerkschnittstelle Network interface
02/07/1990EP0353859A2 Network transit prevention
02/06/1990US4899036 Transaction system
01/1990
01/30/1990US4897874 Metropolitan area network arrangement for serving virtual data networks
01/30/1990CA1265255A1 Application specific integrated circuit
01/23/1990US4896319 Identification and authentication of end user systems for packet communications network services
01/23/1990CA1264875A1 Method and device for transmitting digital data in the form of frame organized messages
01/17/1990EP0350838A2 Communication system
01/16/1990US4894847 High speed half duplex modem with fast turnaround protocol
01/16/1990US4894826 Message generating communication apparatus having a message preamble format allowing parts of certain messages to be ignored
01/16/1990US4894822 Fast packetized data delivery for digital networks
01/16/1990US4894781 Communication control system
01/11/1990WO1990000332A1 An interface unit
01/10/1990EP0350421A2 Generalized data stream transform service
01/10/1990EP0350402A1 Personal computer integrating a digital ISDN subscriber terminal
01/09/1990US4893307 Method and apparatus for linking SNA terminals to an SNA host over a packet switched communications network
01/09/1990US4893199 Digital signal recording apparatus with a digital subdata converting capability