| Patents for H04L 1 - Arrangements for detecting or preventing errors in the information received (103,402) |
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| 04/28/1981 | US4264972 Method and circuit for detecting errors in digital signals |
| 04/28/1981 | US4264893 Data communication system |
| 04/28/1981 | US4264880 Signal generator for producing pulse signals for a remote control |
| 04/21/1981 | US4263591 Electric transmission system |
| 04/14/1981 | CA1099364A1 Partial byte transmit apparatus for digital communication systems |
| 04/08/1981 | EP0026516A1 Apparatus for the processing of an information stream with the aid of an error-correcting convolutional code and for the detection of an error still irremediable in this processing |
| 04/07/1981 | US4261054 Real-time adaptive power control in satellite communications systems |
| 04/07/1981 | US4261035 Broadband high level data link communication line adapter |
| 04/07/1981 | CA1099023A1 Method and system for transmitting and receiving interleaved blocks of encoded data words to minimize error distortion in the recovery of said data words |
| 04/07/1981 | CA1099021A1 Error detector for modified duobinary signals |
| 04/01/1981 | EP0026135A1 Method of testing a digital data transmission line between two modems and device for carrying out this method |
| 04/01/1981 | EP0026050A1 Improvements in or relating to interleavers and de-interleavers |
| 03/31/1981 | CA1098324A1 No translation available |
| 03/25/1981 | EP0025767A1 Method and apparatus for automatically testing a digital data transmission system |
| 03/25/1981 | EP0025477A2 Method and arrangement for measuring the jitter of pulse signals in digital transmission systems |
| 03/24/1981 | CA1098215A1 Clockless serial data transfer |
| 03/17/1981 | CA1097819A1 Digital signal transmission method |
| 03/11/1981 | EP0024940A2 Method and apparatus for transmission of serial data |
| 03/10/1981 | US4255813 Dicode transmission system |
| 03/10/1981 | US4255748 Bus fault detector |
| 03/03/1981 | US4254499 Signal transmission system in a digital controller system |
| 02/24/1981 | US4253193 Tropospheric scatter radio communication systems |
| 02/24/1981 | US4253185 Method of transmitting binary information using 3 signals per time slot |
| 02/24/1981 | US4253089 Signal transmission device for electric rotary machine |
| 02/18/1981 | EP0024020A1 Sequential decoder and system for error correction on burst noise channels by sequential decoding |
| 02/03/1981 | CA1095193A1 Multiplexing |
| 01/27/1981 | US4247938 Method for generating a pseudo-signal in an error rate supervisory unit and circuit for carrying out the same |
| 01/27/1981 | US4247934 Testing system for data transmission paths |
| 01/22/1981 | WO1981000160A1 Apparatus and an improved method for processing of digital information |
| 01/21/1981 | EP0022718A1 Switching circuit for two digital streams |
| 01/13/1981 | US4245342 One-for-n modem control apparatus |
| 01/13/1981 | US4245212 Serial digital data decoder |
| 01/08/1981 | WO1981000034A1 A technique for increasing the rain margin of a communication system |
| 01/07/1981 | EP0021544A1 System for the remote testing of a modem for a speed of transmission different from the speed of reception |
| 01/07/1981 | EP0021283A1 Digital data apparatus |
| 01/07/1981 | EP0020827A1 An arrangement for monitoring the performance of a digital transmission system |
| 01/06/1981 | CA1093178A1 Arrangement for distribution of clock signals |
| 12/30/1980 | US4242752 Circuit arrangement for coding or decoding of binary data |
| 12/30/1980 | US4242750 Process for testing a data transmission system employing a test loop |
| 12/30/1980 | CA1092711A1 Computer to computer communication system |
| 12/16/1980 | US4240156 Concatenated error correcting system |
| 12/16/1980 | CA1091778A1 Digital signal performance monitor |
| 12/10/1980 | EP0020220A1 Binary decoding device and transmission system comprising such a device |
| 12/09/1980 | US4238852 Error correcting system |
| 12/09/1980 | US4238779 Data transmission and reception system |
| 12/09/1980 | CA1091353A1 Vital digital communication system |
| 12/02/1980 | US4237338 Coordinated communication system for transmitting data and method of operating the same |
| 11/27/1980 | WO1980002630A1 Videotex system provided with means for protection against transmission errors |
| 11/27/1980 | WO1980002611A1 A method and an arrangement for supervising faults when transmitting data between computers |
| 11/26/1980 | EP0019545A1 Videography-system provided with protection means against transmission errors |
| 11/25/1980 | CA1090476A1 Apparatus for word synchronization in an optical communication system |
| 11/25/1980 | CA1090425A1 Digital radio relay systems |
| 11/18/1980 | US4234956 Digital relay systems |
| 11/18/1980 | US4234954 On-line bit error rate estimator |
| 11/18/1980 | CA1089996A1 Safety output control for a data processing system emitting binary signals |
| 11/12/1980 | EP0018617A1 System for exchanging coded messages between stations |
| 11/12/1980 | EP0018517A1 Diagnostic and alarm apparatus for a data communication network |
| 11/04/1980 | US4232392 Radio transmission systems |
| 11/04/1980 | US4232387 Data-transmission system using binary split-phase code |
| 11/04/1980 | US4232206 Signal transmission control system |
| 10/28/1980 | US4231094 Method and device for determining the phase intercept in a system employing phase-shift keying modulation |
| 10/28/1980 | CA1088630A1 Diverstity system |
| 10/21/1980 | US4229822 Data detector for a data communication system |
| 10/21/1980 | US4229819 Data transmission system |
| 09/30/1980 | US4225961 System for monitoring the validity of electrical data fed to a number of n functionally parallel-connected data channels |
| 09/30/1980 | US4225960 Automatic synchronizing system for digital asynchronous communications |
| 09/23/1980 | US4224689 Apparatus for smoothing transmission errors |
| 09/23/1980 | US4224642 PCM Recording and reproducing method providing for dropout compensation |
| 09/17/1980 | EP0015730A1 A data transmission system, and a method of passing data through a data transmission system |
| 09/16/1980 | US4223356 Method and arrangement for facsimile picture transmission |
| 09/16/1980 | US4223326 Method and device for reducing the probability of loss of a character in a digital transmission employing biphase coding |
| 09/16/1980 | US4223312 Directive radio communication transmission system for maintaining the alignment of transmission and receiver antenna |
| 09/09/1980 | US4221939 Method and apparatus for determining the tuned frequency of a digital repeater |
| 08/26/1980 | US4219745 Backlash filter apparatus |
| 08/26/1980 | CA1084625A1 Encoding and decoding device for error-detecting transmission systems, in particular for remote- control and remote-actuation equipments |
| 08/20/1980 | EP0014592A2 Bus fault detector |
| 08/20/1980 | EP0014505A1 Device testing system provided with an echo suppressor |
| 08/19/1980 | US4218771 Automatic clock positioning circuit for a digital data transmission system |
| 08/19/1980 | US4218770 Delay modulation data transmission system |
| 08/06/1980 | EP0013990A1 Serial binary information transmission method and devices for implementing the method |
| 08/05/1980 | US4216460 Transmission and/or recording of digital signals |
| 08/05/1980 | US4216428 Pulse signal receiving system employing space diversity |
| 07/23/1980 | EP0013521A1 Transmitting device for coded track circuits |
| 07/15/1980 | US4213007 Method and apparatus for monitoring a pulse-code modulated data transmission |
| 07/08/1980 | US4212013 Duplex-transmitter receiver arrangement |
| 06/11/1980 | EP0011749A1 Data correction circuit |
| 06/11/1980 | EP0011699A1 Circuit for measuring the phase jitter of digital signals, and its use |
| 06/10/1980 | US4207524 Radio coupled device for detecting and analyzing weak transmissions |
| 06/10/1980 | US4207523 Digital channel on-line pseudo error dispersion monitor |
| 06/03/1980 | US4206368 Signal isolating technique |
| 06/03/1980 | CA1078966A1 Time diversity data transmission apparatus |
| 05/20/1980 | US4204228 Digital testing apparatus |
| 05/20/1980 | US4204195 Meter terminal unit for use in automatic remote meter reading and control system |
| 05/20/1980 | US4204194 Meter terminal unit for use in automatic remote meter reading and control system |
| 05/20/1980 | CA1078067A1 Error-control system for data transmission |
| 05/14/1980 | EP0011014A1 Device for measuring the quality of a digital connection and transmission equipments including such a device |
| 04/30/1980 | EP0010344A1 Digital signal detector |
| 04/29/1980 | US4200838 Apparatus for evaluating the error rate of binary digital signals |
| 04/29/1980 | US4200225 Diagnostic check system for digital signal circuit |
| 04/29/1980 | CA1076661A1 Signal processing means and method |