| Patents for H04L 1 - Arrangements for detecting or preventing errors in the information received (103,402) |
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| 09/28/1983 | EP0089831A2 Data communications system ensuring redundant message suppression |
| 09/27/1983 | US4406924 Radio-controlled devices for use in power distribution circuits |
| 09/20/1983 | CA1154170A1 Method and apparatus for detecting a data signal including repeated data words |
| 09/20/1983 | CA1154120A1 Keyboard verification system |
| 09/13/1983 | US4404677 Detecting redundant digital codewords using a variable criterion |
| 09/07/1983 | EP0087738A2 Data eye monitor |
| 09/06/1983 | US4403333 Method for recognizing digital information in transmission in mobile radio communications systems |
| 09/06/1983 | US4403263 System for processing audio PCM digital signals |
| 08/31/1983 | EP0086865A2 Method of wireless transmission of digital information by means of one transmission frequency |
| 08/30/1983 | US4402084 Regenerator having a code rule violation checking device |
| 08/30/1983 | US4402082 Automatic line termination in distributed industrial process control system |
| 08/24/1983 | EP0086541A1 System for communication by way of repeatedly transmitted messages, and stations for use in such a system |
| 08/24/1983 | EP0086482A2 Digital signal communication system |
| 08/23/1983 | US4400811 Detecting accurrences of redundant digital codewords |
| 08/23/1983 | CA1152631A1 Error correction circuit for digital information |
| 08/23/1983 | CA1152598A1 Method for monitoring the bit error rate of a digital transmission system |
| 08/17/1983 | EP0086128A1 Asynchronous transmission system, particularly for a videotext interactive system |
| 08/17/1983 | EP0086091A2 Apparatus and method for signal processing |
| 08/09/1983 | US4398299 Data set network diagnostic system |
| 08/09/1983 | US4398297 Data set diagnostic system |
| 08/09/1983 | US4398292 Method and apparatus for encoding digital with two error correcting codes |
| 08/09/1983 | US4398290 Process and apparatus for digital data communication using packet switching |
| 08/09/1983 | US4398218 Signal monitor system |
| 08/09/1983 | CA1151737A1 Processing binary data |
| 08/04/1983 | WO1983002674A1 Digital system including line activity detection |
| 08/02/1983 | US4397020 Error monitoring in digital transmission systems |
| 07/27/1983 | EP0084461A1 Method of and apparatus for detecting the presence of a frequency shift keyed signal |
| 07/27/1983 | EP0084389A2 Data transmission arrangement and communication network with preventive provision for error elimination |
| 07/26/1983 | US4395772 Line protection switch controller |
| 07/26/1983 | US4395768 Error correction device for data transfer system |
| 07/26/1983 | CA1150847A1 Broadband high level data link communication line adapter |
| 07/26/1983 | CA1150843A1 Method and arrangement for supervising faults when transmitting data between computers |
| 07/26/1983 | CA1150791A1 Circuit for determining the phase jitter of digital signals |
| 07/19/1983 | US4394695 Method and apparatus for evaluating recording systems |
| 07/12/1983 | US4393508 System for locally testing a modem employing frequency shift keying |
| 07/12/1983 | US4393499 Adaptive signal quality measurement circuit for PSK and FSK demodulators |
| 07/12/1983 | US4393279 Digital data transmission system having frequency or phase modulated data carrying signals to provide supervisory channel |
| 07/06/1983 | EP0082905A1 Circuit for the processing, transmission and acoustic reproduction of digitalized tone frequency signals |
| 07/05/1983 | US4392226 Multiple source clock encoded communications error detection circuit |
| 06/29/1983 | EP0082575A1 An energy-synchronised demodulator circuit |
| 06/28/1983 | US4390989 Method and an arrangement for supervising faults when transmitting data between computers |
| 06/28/1983 | US4390984 Status check method for a data transmission system |
| 06/28/1983 | CA1149022A1 Carrier detector in a modem provided with an echo canceler |
| 06/22/1983 | EP0081499A1 Data operated squelch. |
| 06/21/1983 | CA1148660A1 Method and device for carrying out conversion between a cyclic and a general code sequence by the use of a hypothetical zero bit series |
| 06/15/1983 | EP0081387A1 Apparatus for selectively compensating burst errors of variable length in successive data words |
| 06/14/1983 | US4388727 Receivers suitable for use in remotely-operable switching devices and data transmission systems |
| 06/08/1983 | EP0080785A2 Parallel/series error correction circuit |
| 06/07/1983 | US4387461 Experientially determined signal quality measurement device for antipodal data |
| 05/31/1983 | CA1147402A1 Time jitter determining apparatus |
| 05/25/1983 | EP0079706A1 Digital data transmissions with bit arbitration |
| 05/24/1983 | US4385392 Modem fault detector and corrector system |
| 05/24/1983 | US4385384 Modem diagnostic and control system |
| 05/24/1983 | US4385383 Error rate detector |
| 05/24/1983 | US4385230 Digital temperature effect generator |
| 05/17/1983 | US4384358 Space-diversity broad-band digital radio receiver |
| 05/17/1983 | US4384354 Noise margin measurement and error probability prediction |
| 04/26/1983 | US4381546 System for the quantitative measurement of impairments in the communication channel of a quadrature amplitude modulation data communication system |
| 04/20/1983 | EP0076846A1 Data processing system having error checking capability. |
| 04/19/1983 | US4380814 Baseband data switching apparatus for digital communications system |
| 04/19/1983 | CA1144999A1 Arrangement for testing a device provided with an echo canceller |
| 04/12/1983 | US4380067 Error control in a hierarchical system |
| 04/12/1983 | CA1144627A1 System for exchanging coded messages between stations |
| 04/12/1983 | CA1144617A1 Error performance monitoring for digital transmission systems |
| 04/06/1983 | EP0075859A2 Signal diagnostic method and apparatus for multiple transmission system |
| 03/31/1983 | WO1983001134A1 Multiple source clock encoded communications error detection circuit |
| 03/30/1983 | EP0075480A2 Serial data communication system |
| 03/30/1983 | EP0075310A1 Circuit arrangement for telecommunication exchanges, especially telephone exchanges, with devices for securing the transmission of coded signals |
| 03/23/1983 | EP0074657A1 Method of securing the transmission of digital signals |
| 03/22/1983 | US4377862 Method of error control in asynchronous communications |
| 03/16/1983 | EP0073979A1 System for the transmission of digital information signals |
| 03/15/1983 | USRE31182 Packet-switched data communication system |
| 03/09/1983 | EP0073644A2 An electronic identification method and means |
| 03/08/1983 | US4376310 Mobile data terminal channel busy arrangement |
| 03/08/1983 | US4376309 Method and apparatus for signal-eye tracking in digital transmission systems |
| 03/08/1983 | CA1142606A1 Apparatus and method for replacement of a parallel, computer-to-peripheral wire link with a serial optical link |
| 03/01/1983 | US4375681 Protected muldem with interchangeable circuits of different data rates |
| 03/01/1983 | US4375581 Digital transmission error reduction |
| 02/22/1983 | US4375102 Digital code word detection |
| 02/22/1983 | US4375099 Link performance indicator with alternate data sampling and error indication generation |
| 02/22/1983 | US4375097 Transparent intelligent network for data and voice |
| 02/15/1983 | CA1141493A1 Adaptive error encoding in multiple access systems |
| 01/26/1983 | EP0070287A1 High frequency communications. |
| 01/25/1983 | US4370745 Fail-safe transmission system |
| 01/25/1983 | CA1140230A1 Method for carrying out loopback test |
| 01/25/1983 | CA1140216A1 Data modem false equilibrium circuit |
| 01/18/1983 | US4369523 Remote control system of an optical repeater |
| 01/18/1983 | US4369516 Self-clocking data transmission system |
| 01/18/1983 | US4369512 Digital transmission circuit using means for introducing a redundancy on the most significant bit |
| 01/11/1983 | US4368533 Error data correcting system |
| 01/05/1983 | EP0068099A2 Fault tolerant machine/human interface unit |
| 01/04/1983 | US4367550 Method for monitoring the bit error rate of a digital transmission system |
| 01/04/1983 | CA1138998A2 Modem diagnostic and control system utilizing a microprocessor |
| 01/04/1983 | CA1138997A2 Modem diagnostic and control system |
| 12/28/1982 | US4366478 Signal transmitting and receiving apparatus |
| 12/23/1982 | WO1982004513A1 Data operated squelch |
| 12/22/1982 | EP0067310A2 Bisynchronous protocol communication circuit |
| 12/14/1982 | CA1137582A2 Multiprocessor system |
| 12/07/1982 | US4363123 Method of and apparatus for monitoring digital transmission systems in which line transmission errors are detected |
| 12/01/1982 | EP0065764A2 Digital radio system |