Patents
Sitemap › H04 - Electric communication technique › H04L - Transmission of digital information, e.g. telegraphic communication › H04L 1 - Arrangements for detecting or preventing errors in the information received
Patents for H04L 1 - Arrangements for detecting or preventing errors in the information received (103,402)
12/1982
12/01/1982EP0065763A2 Arrangement for the fast detection of frequency-shift keying signals in a radio link
12/01/1982EP0065711A1 High reliability duplicated clock device
11/1982
11/30/1982CA1136726A1 Testing system for data transmission paths
11/23/1982US4360918 Arrangement for detecting defects during the asynchronous transfer of digital measured values
11/17/1982EP0064923A1 System for the phase synchronization of digital data streams, and its application to the commutation of said data streams
11/16/1982US4359718 Device for switching two digital trains
11/02/1982US4357700 Adaptive error encoding in multiple access systems
11/02/1982CA1134941A1 Recording digital signals
10/1982
10/28/1982WO1982003710A1 Data processing system having error checking capability
10/27/1982EP0063443A2 A digital waveform conditioning circuit
10/26/1982CA1134447A1 Data transmission system
10/20/1982EP0063076A1 Method for the protection against transmission errors of radio-telegraph messages, and apparatus for carrying out said method
10/20/1982EP0062945A1 Device for interrogating and correcting a serial data signal
10/19/1982US4355406 Carrier detector in a modem provided with an echo canceler
10/19/1982US4355402 Data modem false equilibrium circuit
10/19/1982US4355392 Burst-error correcting system
10/19/1982US4355284 Phase correction system
10/19/1982CA1134047A1 Device for measuring the quality of a digital radio link
10/12/1982US4354269 Apparatus for the processing of an information stream with the aid of an error-correcting convolutional code and apparatus for the detection of an error still irremediable in this processing
10/12/1982US4354252 Programmable digital data terminal for mobile radio transceivers
10/12/1982CA1133638A1 Modem diagnostic and control system
09/1982
09/29/1982EP0061288A2 Digital television signal processing
09/29/1982EP0061224A1 System for radio teleprinter traffic
09/28/1982US4352193 Intended value determination system
09/28/1982US4352103 Industrial control system
09/22/1982EP0060751A1 Apparatus for switching data transmission channels
09/21/1982US4351062 Method and apparatus for suppressing digital error noise in digital communication
09/21/1982US4351059 Method for testing a digital data transmission line between two modems and a device for the application of said method
09/21/1982US4350879 Time jitter determining apparatus
09/15/1982EP0060095A2 Shuffling digital data
09/14/1982US4349915 Minimization of multipath and doppler effects in radiant energy communication systems
09/14/1982US4349914 Bit synchronous switching system for space diversity operation
09/14/1982US4349904 Error correction circuit using character probability
09/14/1982US4349170 Safety coding process for track circuits
09/14/1982CA1131729A1 Data transmission system with test loop facilities
09/07/1982CA1131363A1 Pcm signal transmitting system
08/1982
08/31/1982US4347609 Method and system for transmission of serial data
08/31/1982US4347605 Multiplexed telecommunication systems
08/31/1982US4347603 System for exchanging encoded messages between stations
08/31/1982US4347563 Industrial control system
08/31/1982CA1130924A1 Supervisory control system
08/31/1982CA1130865A1 Data communication system
08/31/1982CA1130791A1 Thermal heat pump
08/25/1982EP0058417A2 Method for transmitting time-division multiplexed data
08/24/1982US4346474 Even-odd parity checking for synchronous data transmission
08/24/1982US4346473 Error correction coding method and apparatus for multilevel signaling
08/24/1982CA1130386A1 Digital signal combining circuit for a diversity receiver, comprising an apc loop for locking instants of read-out of buffer memories to an averaged phase of signals supplied thereto
08/17/1982CA1130008A1 Method and apparatus for error control in asynchronous communications
08/10/1982US4344171 Effective error control scheme for satellite communications
08/05/1982WO1982002633A1 High frequency communications
08/03/1982CA1129124A1 One-for-n modem control apparatus
08/03/1982CA1129030A1 Error correction on burst channels by sequential coding
08/03/1982CA1129029A1 Transmission-trouble reducing system
07/1982
07/21/1982EP0056304A2 Method and apparatus for measuring the frequency response of an element or elements in a digital transmission path
07/20/1982US4340965 Method of and apparatus for detecting and circumventing malfunctions in a current-loop communications system
07/20/1982US4340963 Methods and systems for the correction of errors in data transmission
07/13/1982CA1127781A1 Orthogonal spread spectrum time division multiple accessing mobile subscriber access system
07/07/1982EP0055404A1 Method and system for data communication
06/1982
06/30/1982EP0054583A1 Method of transmitting binary data sequences and arrangement for enabling the rapid determination of the end of a transmitted binary data sequence
06/29/1982US4337457 Method for the serial transmission of binary data and devices for its implementation
06/29/1982CA1126867A1 Device for controlling the quality of a synchronous digital transmission signal
06/23/1982EP0054118A1 Improved go-back-N automatic repeat request communication systems
06/15/1982US4335361 Variable gain amplifier
06/08/1982US4334310 Noise suppressing bilevel data signal driver circuit arrangement
06/08/1982US4334306 Transparent intelligent network for data and voice
06/08/1982CA1125404A1 Method for generating a pseudo-signal in an error rate supervisory unit and circuit for carrying out the same
06/08/1982CA1125393A1 Digital signal detector
06/01/1982US4333178 Optical fiber repeater
06/01/1982CA1124880A1 Programmable data terminal for mobile transducers
06/01/1982CA1124872A1 Loopback test for data-transmission channels
05/1982
05/26/1982EP0052463A1 Soft decision convolutional code transmission system
05/18/1982US4330862 Signal characteristic state detector using interval-count processing method
05/18/1982CA1123958A1 System for transmitting binary data via a number of channels
05/11/1982US4329708 Digital signal processing apparatus
05/04/1982US4328582 Binary decoding device
05/04/1982US4328580 Apparatus and an improved method for processing of digital information
05/04/1982US4328577 Muldem automatically adjusting to system expansion and contraction
04/1982
04/28/1982EP0050434A2 Communication device with under-run signalling
04/27/1982US4327356 Arrangement for monitoring the performance of a digital transmission system
04/27/1982US4327258 Method and apparatus for rapid evaluation of parameters affecting voiceband data transmission
04/20/1982US4326264 Display system for a supervisory control system
04/20/1982US4326168 Signal monitor system
04/14/1982EP0049607A2 Communication channel
04/13/1982CA1121871A1 Derangement detector in a receiver of a system for data transmission by means of phase modulation of a carrier
04/07/1982EP0048936A1 Method of receiving bit streams which are transmitted on a plurality of parallel lines of different lengths
04/07/1982EP0048866A1 Method of recognizing digital data when using a digital data transmission, particularly a data transmission in mobile radio communication systems
04/07/1982EP0048865A1 Method of recognizing digital data when using a digital data transmission, particularly a data transmission in mobile radio communication systems
04/07/1982EP0048859A1 Method of recognizing digital data when using a digital data transmission, particularly a data transmission in mobile radio communication systems
04/01/1982WO1982001111A1 Self-clocking data transmission system
04/01/1982WO1982001094A1 Error monitoring in digital transmission systems
03/1982
03/30/1982US4322848 Reliability-weighted analog threshold decoder
03/30/1982US4322576 Message format for secure communication over data links
03/24/1982EP0048152A1 A PCM signal processor
03/17/1982EP0047683A1 Error detecting device for a ternary coded signal
03/16/1982US4320516 Circuit for ascertaining of the phase jitter of digital signals
03/16/1982US4320511 Method and device for conversion between a cyclic and a general code sequence by the use of dummy zero bit series
03/16/1982CA1120119A1 System for identifying and correcting the polarity of a data signal
03/16/1982CA1120118A1 Apparatus for smoothing transmission errors
03/10/1982EP0047114A1 Data transmission system and an industrial robot using the system
03/10/1982EP0046938A1 Circuit for synchronising a transmitting-receiving set with the data network of a digital information system
1 ... 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035