| Patents for H04L 1 - Arrangements for detecting or preventing errors in the information received (103,402) |
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| 08/01/1990 | CA2008947A1 Method for the transmission of data or commands and device for carrying out said method |
| 07/31/1990 | CA1272260A1 Data monitor apparatus |
| 07/25/1990 | EP0379114A1 Method and apparatus for the control of the parameters of a modulator with 2n phase/amplitude states |
| 07/25/1990 | CN1008962B Subscriber rf telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of rf channels |
| 07/24/1990 | US4943965 Digital signal decoding method and circuit therefor |
| 07/24/1990 | US4943926 Method for the analysis and synthesis of binary signals |
| 07/19/1990 | DE3900808A1 Method for monitoring the function of bit error detection circuits |
| 07/18/1990 | EP0378424A1 Link transmission priority start |
| 07/18/1990 | EP0148198B1 Data detector using probabilistic information in received signals |
| 07/11/1990 | EP0377136A2 Adaptive data link protocol |
| 07/10/1990 | US4941199 Uplink power control mechanism for maintaining constant output power from satellite transponder |
| 07/10/1990 | US4941144 Data transmission device capable of adaptively varying a packet size without an increase in hardware |
| 07/10/1990 | US4941115 Hand-held tester for communications ports of a data processor |
| 07/10/1990 | CA1271535A1 Pulse frequency stabilizer device |
| 07/04/1990 | EP0376250A1 Self-adaptive equalization device for a differentially coherent demodulation arrangement |
| 07/04/1990 | EP0210213B1 Radio pager with error detection |
| 07/03/1990 | US4939746 Trunked radio repeater system |
| 07/03/1990 | US4939741 Communication control system |
| 07/03/1990 | US4939736 Protection against loss or corruption of data upon switchover of a replicated system |
| 07/03/1990 | US4939735 Information handling system having serial channel to control unit link |
| 07/03/1990 | US4939734 Method and a system for coding and decoding data for transmission |
| 07/03/1990 | US4939732 Method and system for checking errors of signal being transferred through transmission line |
| 07/03/1990 | US4939731 Data transmission system with automatic repeat request |
| 06/27/1990 | EP0375645A2 Serial link transparent mode disparity control |
| 06/27/1990 | EP0374303A1 Process for the individual monitoring of transmission sections of a communications transmission link, and apparatus for carrying out the process |
| 06/23/1990 | CA2006394A1 Method of and apparatus of individually monitoring transmission sections of a communications transmission link |
| 06/20/1990 | EP0374028A1 Method and communication system with information enciphering |
| 06/19/1990 | CA1270539A1 Fault location system for a digital transmission line |
| 06/14/1990 | WO1990006647A1 Method and system for data transmission, using forward error correction and frame interleaving |
| 06/14/1990 | WO1990006637A1 Adaptive rate control for echo cancelling modem |
| 06/12/1990 | US4933672 Data transmission system with a digital alarm facility |
| 06/12/1990 | CA1270301A1 Device for detecting bit phase difference |
| 06/06/1990 | EP0371035A1 Method for error correction in digitally encoded speech |
| 06/06/1990 | EP0371032A1 Protection of energy information in sub-band coding |
| 06/05/1990 | CA2004536A1 Method and system for data transmission |
| 06/02/1990 | CA2004476A1 Adaptive rate control for echo cancelling modem |
| 05/30/1990 | EP0370862A1 Method and system for signal transmission |
| 05/30/1990 | EP0370845A1 Ring network with a spare loop |
| 05/30/1990 | EP0370533A2 Digital communication system with a reduced bit error rate |
| 05/30/1990 | EP0370291A2 System and devices for transmitting signals consisting of data blocks |
| 05/29/1990 | US4930127 Method and device for transmitting a digital engineering service channel by means of the parity channel of a digital bit stream transmitted in a code with parity checking |
| 05/29/1990 | CA1269715A1 Method and device for building up a connection in shortwave radio networks |
| 05/23/1990 | EP0369917A2 Method for broadcasting digital data, especially towards mobile stations, with a high bit rate, with time-frequency interleaving and analogous synchronisation |
| 05/22/1990 | US4928288 Decoding method and device with erasure detection for multilevel transmission systems |
| 05/22/1990 | US4928096 Paging terminal apparatus with message storage and retransmission capability and method therefor |
| 05/22/1990 | CA1269463A1 Jitter measurement method and apparatus |
| 05/17/1990 | WO1990005336A1 Guaranteed reliable broadcast network |
| 05/16/1990 | EP0368469A1 Digital communications systems |
| 05/16/1990 | CN1008041B Alternating communication channel switchover system |
| 05/15/1990 | US4926169 Coder-decoder for purged extended golay (22,7) codes |
| 05/09/1990 | EP0367435A2 Data communication system using repetition of transmission |
| 05/08/1990 | US4924456 High speed modem |
| 05/08/1990 | CA1268821A1 Communication system with variably repeated transmission of data blocks |
| 05/03/1990 | DE3836500A1 Circuit arrangement for detecting errors in the transmission of data between a transmitting device and a receiving device |
| 05/02/1990 | EP0366589A2 Method of maintaining integrity of data during message transmission in a data communication system |
| 05/02/1990 | EP0366160A1 Non intrusive channel impairment analyser |
| 05/02/1990 | EP0366159A1 Non intrusive channel impairment analyser |
| 05/02/1990 | CN1007861B Antenna diversity reception system for eliminating interference |
| 05/02/1990 | CA2001939A1 Guaranteed reliable broadcast network |
| 05/01/1990 | US4922494 Method of and circuit for decoding block-coded messages affected by symbol substitutions, insertions and deletions |
| 04/26/1990 | DE3836206A1 Method for coding and checking information for safety- and security-related transmissions and device for carrying out the method |
| 04/25/1990 | CN1007773B Signal selection by majority comparison |
| 04/24/1990 | US4920537 Method and apparatus for non-intrusive bit error rate testing |
| 04/24/1990 | CA1268272A1 Access circuit diagnostics for integrated services digital network |
| 04/24/1990 | CA1268269A1 Transmision system using forward error correction |
| 04/24/1990 | CA1268258A1 Method and apparatus for synchronizing encrypting and decrypting systems |
| 04/24/1990 | CA1268225A1 Data modem with adaptive synchronized speed change |
| 04/19/1990 | WO1990004295A1 Symbol detection and error correction coding in a local area network |
| 04/17/1990 | US4918708 Analysis of digital radio transmissions |
| 04/17/1990 | US4918685 Transceiver arrangement for full-duplex data transmission comprising an echo canceller and provisions for testing the arrangement |
| 04/17/1990 | US4918623 Testing the performance of a communication line between two modems using modem processor |
| 04/17/1990 | US4918446 Decoder with reduced synchronization capture time |
| 04/03/1990 | US4914654 Multiplex transmission system |
| 03/28/1990 | EP0360489A2 Protection against loss or corruption of data upon switchover of a replicated system |
| 03/28/1990 | EP0360241A2 Error correction system in a multicarrier radio transmission system |
| 03/27/1990 | US4912705 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels |
| 03/27/1990 | CA1267233A1 Method and circuit arrangement for the transmission of data signals between control devices connected to one another via a loop system |
| 03/27/1990 | CA1267231A1 Method and circuit arrangement for the transmission of data signals between two control devices belonging to a loop system |
| 03/21/1990 | EP0359352A2 Telecommunications transmission security arrangement |
| 03/21/1990 | EP0359265A2 Zero string error detection circuit |
| 03/21/1990 | EP0359261A2 Subsignal transmitting system |
| 03/20/1990 | CA1266920A1 Method and circuit arrangement for the transmission of data signals between two control devices belonging to a loop system |
| 03/14/1990 | CN1040468A Telecommunications transmission security arrangement |
| 03/13/1990 | US4908828 Method for error free message reception |
| 03/13/1990 | US4908827 Forward error correction system |
| 03/13/1990 | US4908530 Non-linear squelch circuit for IEEE-802. 3 protocol |
| 03/13/1990 | CA1266706A1 Radio receiver |
| 03/13/1990 | CA1266705A2 Digital communication device |
| 03/08/1990 | WO1990002458A1 A method for remote configuration of a modem |
| 03/07/1990 | CN1040180A Signal transmission apparatus in elevators |
| 03/06/1990 | US4907277 Method of reconstructing lost data in a digital voice transmission system and transmission system using said method |
| 03/06/1990 | US4907248 Error correction for digital signal transmission |
| 03/06/1990 | US4907175 Monitoring device |
| 02/28/1990 | EP0203151B1 Loop around data channel unit |
| 02/28/1990 | CN1007032B Method of duplex data transmission using send-and-wait protocol |
| 02/27/1990 | US4905302 Trunked radio repeater system |
| 02/27/1990 | US4905234 Apparatus and method for transmitting digital data over a radio communications channel |
| 02/27/1990 | US4905172 Method of generating and transmitting digitally distorted test signals |
| 02/27/1990 | CA1266309A1 Request repeat method for data communication |
| 02/21/1990 | EP0355078A2 Hand-held tester for the input/output ports of a data processor |