Patents
Sitemap › H04 - Electric communication technique › H04L - Transmission of digital information, e.g. telegraphic communication › H04L 25 - Baseband systems
Patents for H04L 25 - Baseband systems (55,083)
09/1982
09/28/1982CA1132712A1 Code converting method and system
09/21/1982US4351061 Method of phase synchronization in a synchronous data transmission system, and apparatus for carrying out the method
09/21/1982US4351060 Automatic, digitally synthesized matching line terminating impedance
09/21/1982US4350973 Receiver apparatus for converting optically encoded binary data to electrical signals
09/21/1982CA1132256A1 Video player-recorder with non-linear mark length modulation
09/21/1982CA1132220A1 Electronic relay arrangement
09/21/1982CA1132218A1 Automatic equaliser for sychronous digital data transmission
09/14/1982US4349889 Non-recursive filter having adjustable step-size for each iteration
09/08/1982EP0059493A1 Arrangement for decoding a biphase coded signal, as well as utilisation of the arrangement
09/07/1982US4348762 Circuit for correcting data reading clock pulses
09/07/1982US4348659 Method and apparatus for encoding a digital signal to have minimal DC component
09/07/1982CA1131366A1 Data processing transceiver circuit
09/02/1982WO1982002985A1 Biphase detector
09/02/1982WO1982002966A1 Data communication system
09/01/1982EP0058752A1 Method and arrangement for a fault-free synchronization of asynchronous pulses
08/1982
08/31/1982US4347617 Asynchronous transmission system for binary-coded information
08/31/1982US4347615 Transversal equalizers
08/31/1982CA1130871A1 Non-linear digital filter
08/31/1982CA1130866A1 Digital signal reception system
08/25/1982EP0058573A1 Data transmission system with transmission links joined in a ring
08/24/1982US4346475 Data transmission system operating on the spread spectrum principle
08/24/1982US4346452 NRZ/Biphase microcomputer serial communication logic
08/24/1982US4346367 Circuit for converting binary digital signals into pseudoternary A.C. pulses
08/24/1982US4346353 Modulator and demodulator circuits for modified delay modulation method
08/24/1982CA1130409A1 Half-duplex/simplex digital signal converter
08/18/1982EP0058081A2 Methods and apparatus for encoding binary data
08/18/1982EP0057953A2 Arrangement for correcting pulse distortion in homochronous data transmission
08/17/1982US4345325 Message-interchange circuitry for microprocessors linked by synchronous communication network
08/11/1982EP0057534A2 Telegraphic communication system
08/10/1982US4344089 Ghost cancelling system
08/10/1982US4344041 Biphase detector
08/10/1982CA1129556A1 Asynchronous-to-synchronous data concentration system
08/04/1982EP0057003A1 Pulse detecting circuit of receiver for use in digital radio communication system
08/03/1982US4343041 Modem circuitry
08/03/1982US4343023 Magnetic recording and reproduction of digital information
08/03/1982CA1129105A1 Method and circuit for decoding a pcm binary signal
07/1982
07/27/1982US4342054 Information read device
07/27/1982US4341927 Data transmission apparatus
07/27/1982CA1128630A1 Data synchronization circuit
07/13/1982US4339727 Waveform converting circuit
07/13/1982US4339724 Filter
07/07/1982EP0055670A2 Duty cycle control circuit for a periodic pulse signal, and 2n frequency multiplier including this circuit
06/1982
06/30/1982EP0055123A1 Data transmission system
06/30/1982EP0054829A1 Method and apparatus for detecting the training sequence of an autoadaptive equalizer
06/30/1982EP0054642A2 Noise clamping circuit
06/29/1982US4337465 Line driver circuit for a local area contention network
06/29/1982US4337458 Data encoding method and system employing two-thirds code rate with full word look-ahead
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
06/29/1982CA1126826A1 Coefficient tap leakage for fractionally-spaced equalizers
06/24/1982WO1982002130A1 Method and circuit for clock recovery
06/22/1982CA1126361A1 Digital transmission system
06/22/1982CA1126350A1 Three state bus driver with protection circuitry
06/16/1982EP0053958A1 Process for the parallel/series conversion of a digital parallel sequence
06/16/1982EP0053638A1 Current mode data or power bus
06/16/1982EP0053630A1 Wideband transceiver with emi suppression
06/16/1982EP0053629A1 Voiceband data set.
06/15/1982US4335455 Method and apparatus for four-wire type transmission of digital message signals
06/10/1982WO1982001948A1 Signal filter method and apparatus
06/09/1982EP0053214A1 System for the distribution of digital signals
06/08/1982US4334310 Noise suppressing bilevel data signal driver circuit arrangement
06/08/1982CA1125406A1 Ripple register for transmission of data
06/08/1982CA1125393A1 Digital signal detector
06/01/1982US4333158 Automatic gain control circuit for an adaptive filter
06/01/1982CA1124879A1 Digital data communication network having differing data transmission rate capabilities
06/01/1982CA1124872A1 Loopback test for data-transmission channels
06/01/1982CA1124821A1 Time-division-multiplexed exchanger
05/1982
05/26/1982EP0052463A1 Soft decision convolutional code transmission system
05/26/1982EP0052362A1 Fast start-up system for transversal equalizers
05/25/1982CA1124356A1 Regenerator having automatic gain control referenced to a data-pattern-dependent pulse stream
05/19/1982EP0051725A1 Transmission method for digital signals
05/18/1982US4330862 Signal characteristic state detector using interval-count processing method
05/18/1982US4330861 Digital equalizer for signal receiver in QPSK data-transmission system
05/18/1982US4330856 Digital signal transmission system including means for converting asynchronous signals to the operating speed of a transmission line
05/18/1982CA1123963A1 Digital signal transmission system
05/18/1982CA1123957A1 Apparatus and method for generating a high-accuracy 7-level correlative signal
05/12/1982EP0051426A1 Request queueing in memory controller
05/12/1982EP0051332A1 Two-wire bus-system comprising a clock wire and a data wire for interconnecting a number of stations
05/12/1982EP0051141A1 Method and arrangement for equalizing received binary signals
05/11/1982US4329542 Circuit arrangement for an electronic d.c. telegraph transmitter
05/05/1982EP0050930A1 Improvements in or relating to data transmission systems
05/04/1982CA1123101A1 Data transmission system
04/1982
04/27/1982US4327442 Clock recovery device
04/27/1982US4327441 Method and apparatus for synchronizing and calibrating a receiver to a pulse width modulation transmitter
04/27/1982US4327440 Signal detector for use in digital communication
04/27/1982US4327249 Direct current telegraphy systems
04/27/1982CA1122733A1 Method and device for converting an input time junction into an output time junction of a different type
04/27/1982CA1122711A1 Method and apparatus for encoding and recovering binary digital data
04/21/1982EP0050082A1 Full duplex communication system for voice grade channels
04/21/1982EP0050033A2 A line driver circuit including a protective circuit against excess current
04/20/1982US4326287 Two wire bi-directional digital telephone link
04/20/1982US4326169 Adaptive decision level circuit
04/14/1982EP0049652A1 Device for time compression and device for time decompression of data
04/14/1982EP0049640A2 A line driver circuit
04/13/1982US4325053 Method and a circuit for decoding a C.M.I. encoded binary signal
04/07/1982EP0048936A1 Method of receiving bit streams which are transmitted on a plurality of parallel lines of different lengths
04/07/1982EP0048925A1 Circuit for small private telephone exchanges with bidirectional transmission of binary digital signals between a central device and telephone sets connected thereto
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
1 ... 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551