| Patents for H04L 1 - Arrangements for detecting or preventing errors in the information received (103,402) |
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| 02/23/1988 | US4727534 Timing and carrier recovery in dual polarization communications systems |
| 02/23/1988 | CA1233233A1 Error correction scheme |
| 02/16/1988 | US4726029 Error-correcting modem |
| 02/16/1988 | US4726027 Data retransmitting method in communication network |
| 02/16/1988 | CA1232968A1 Apparatus for interfacing with x21 equipment |
| 02/09/1988 | CA1232689A1 Method and device for detecting errors in a stream of cmi-coded binary data |
| 02/04/1988 | DE3625589A1 CMI decoder |
| 02/03/1988 | EP0255065A2 Burst signal detection apparatus |
| 02/02/1988 | US4723244 Method and apparatus for preserving the integrity of the error detection/correction word in a code word |
| 01/27/1988 | EP0254140A1 Method for producing information in data blocks with protection for serial data bit streams using cyclic binary codes |
| 01/27/1988 | EP0076846B1 Data processing system having error checking capability |
| 01/26/1988 | CA1232023A1 Method and apparatus for supervising digital radio transmission line |
| 01/26/1988 | CA1232021A1 Digital signal processor modem |
| 01/26/1988 | CA1232020A1 Channel monitoring circuit for use in a repeater station over radio digital transmission |
| 01/19/1988 | US4720829 Error control encoding system |
| 01/13/1988 | EP0252630A2 Transmission system using forward error correction |
| 01/13/1988 | CN87204030U Inquiting back correcting and monitor system for intelligent telegraph |
| 01/13/1988 | CN85105321B Error detecting code circuit used in digital communication system |
| 01/12/1988 | CA1231388A1 Bit error detection circuit for psk-modulated carrier wave |
| 01/05/1988 | US4718066 Self-adaptive hybrid data transmission |
| 12/29/1987 | US4716385 Multilevel modulator comprising a compact error correcting code producing unit |
| 12/29/1987 | CA1230943A1 Alternating communication channel switchover system |
| 12/23/1987 | EP0249930A1 Method for synchronizing two binary streams |
| 12/23/1987 | EP0249929A1 Device for the stabilization of the appearance rhythm of pulses |
| 12/23/1987 | DE3620835A1 Method for monitoring a digital hierarchically structured information transmission network |
| 12/22/1987 | US4715048 Frequency offset diversity receiving system |
| 12/22/1987 | CA1230647A1 Radio communication system |
| 12/17/1987 | DE3719347A1 Data error detection circuit |
| 12/16/1987 | EP0248825A1 Signal selection by majority comparison |
| 12/15/1987 | US4713829 Coded modulation system with a simplified decoder capable of reducing the effects of channel distortion |
| 12/15/1987 | US4713817 Multidimensional, convolutionally coded communication systems |
| 12/15/1987 | US4713808 Watch pager system and communication protocol |
| 12/15/1987 | CA1230396A1 Method of synchronization in a data transmission system using a linear block code |
| 12/09/1987 | EP0248028A1 Method and apparatus for synchronizing encrypting and decrypting systems |
| 12/08/1987 | US4712214 Protocol for handling transmission errors over asynchronous communication lines |
| 12/08/1987 | EP0167531A4 Packetized ensemble modem. |
| 12/01/1987 | US4710976 Optical repeater monitoring system |
| 12/01/1987 | US4710944 Dual transmit-receive space diversity communication system |
| 12/01/1987 | US4710925 Data communication system |
| 12/01/1987 | US4710924 Local and remote bit error rate monitoring for early warning of fault location of digital transmission system |
| 12/01/1987 | US4710871 Data transmitting and receiving apparatus |
| 12/01/1987 | CA1229889A1 Maintenance response signalling arrangement for a digital transmission system |
| 12/01/1987 | CA1229881A1 Apparatus for detecting and recovering binary data from an input signal |
| 11/25/1987 | EP0246663A2 Channel switching system without instantaneous signal loss |
| 11/25/1987 | EP0246556A1 Circuit for monitoring a control unit |
| 11/25/1987 | EP0138981B1 Improved error protection of linearly coded digital signals |
| 11/24/1987 | US4709376 Received signal processing apparatus |
| 11/17/1987 | CA1229437A1 Space diversity communications system for multi- direction time division multiplex communications |
| 11/11/1987 | EP0244629A2 Radio transmission system having simplified error coding circuitry and fast channel switching |
| 11/11/1987 | CN87103334A Method of duplex data transmission using send-and-wait protocol |
| 11/11/1987 | CN87103288A Method and device for building up connection in shortwave radio networks |
| 11/11/1987 | CN86204288U Synchronous code element anti-interference device |
| 11/05/1987 | WO1987006788A1 Multi-speed, full duplex modem |
| 11/05/1987 | WO1987006785A1 Apparatus useful in channel equalization adjustment |
| 11/04/1987 | EP0244117A2 A method of duplex data transmission using a send-and-wait protocol |
| 11/04/1987 | EP0243938A2 Protection channel monitoring system using a check signal comprising two different n-bit code patterns sequentially arranged at random |
| 11/04/1987 | EP0243885A2 Method and apparatus for setting up a short wave radio network communication |
| 11/04/1987 | EP0243589A2 Radio receiver with a carrier recovery control system |
| 11/03/1987 | CA1228930A1 Method and apparatus for detecting synchronous or asynchronous data transmission |
| 10/28/1987 | EP0242367A1 Asynchronous communication system. |
| 10/22/1987 | WO1987006368A1 Apparatus and method for encoding and decoding attribute data into error checking symbols of main data |
| 10/22/1987 | DE3613183A1 Device for monitoring data traffic on a bus system |
| 10/20/1987 | US4701923 Adaptively coded data communication system with half duplex and/or full duplex function |
| 10/19/1987 | EP0210181A4 Dispatch trunked radio system. |
| 10/14/1987 | EP0240833A1 Monitoring apparatus for monitoring the operation mode of transmission devices of the information transmission technique |
| 10/14/1987 | EP0139803B1 Method of recovering lost information in a digital speech transmission system, and transmission system using said method |
| 10/14/1987 | CN87200528U Damage-free switching device |
| 10/13/1987 | US4700366 Method for the reception and detection of digital signals |
| 10/13/1987 | US4700363 Data communication method and apparatus |
| 10/13/1987 | US4700358 Synchronous/asynchronous modem |
| 10/13/1987 | US4700019 Method and circuit arrangement for the transmission of data signals to a group of control devices belonging to a loop system |
| 10/13/1987 | US4700018 Method and circuit arrangement for the transmission of data signals between two control devices belonging to a loop system |
| 10/08/1987 | EP0218605A4 Signal quality steered diversity. |
| 10/07/1987 | EP0240363A2 Error correction methods |
| 10/07/1987 | EP0240157A2 A single transmission line bidirectional optical communication system |
| 09/30/1987 | EP0239453A1 Method and device for transmitting digital data by way of frame-organized messages |
| 09/30/1987 | EP0238813A2 Method for transmitting data over mains lines |
| 09/29/1987 | US4697281 Cellular telephone data communication system and method |
| 09/29/1987 | US4697265 Error monitor circuit |
| 09/29/1987 | CA1227575A1 Universal realtime transparent asynchronous serial/echoplex converter |
| 09/23/1987 | EP0238288A1 Analysis of digital radio transmissions |
| 09/23/1987 | EP0238284A1 Analysis of digital radio transmissions |
| 09/22/1987 | US4695997 Device for performing wrap tests on a multiplex link in a data communication system |
| 09/22/1987 | CA1227246A1 Method and device for measuring phase jitter on a transmission channel |
| 09/16/1987 | EP0236969A2 Synchronization of pseudo random sequence generators of a high clock frequency |
| 09/15/1987 | US4694468 Apparatus useful in channel equalization adjustment |
| 09/15/1987 | US4694467 Modem for use in multipath communication systems |
| 09/15/1987 | CA1226915A1 Plant management system |
| 09/10/1987 | DE3606885A1 System for transmitting information signals and control signals |
| 09/09/1987 | EP0236009A2 Coding digital data |
| 09/08/1987 | US4692945 Dispatch trunked radio system |
| 09/08/1987 | US4692816 Digital data transmitting system for transmitting digital data a number of times depending on an information content of the digital data |
| 09/01/1987 | US4691342 Multi-speed, full duplex modem |
| 09/01/1987 | US4691314 Method and apparatus for transmitting data in adjustable-sized packets |
| 09/01/1987 | CA1226371A1 Communications method |
| 08/26/1987 | EP0233679A1 Non intrusive channel impairment analyser |
| 08/25/1987 | CA1226069A1 Safe data processing device |
| 08/20/1987 | DE3604835A1 Method for transmitting useful information via a transmission path |
| 08/19/1987 | EP0232315A1 Asynchronous addressable electronic key telephone system |
| 08/19/1987 | CN86107797A Improved synchro lasynchronous modem |